/* roulang page: index */
:root {
            --primary: #0f1724;
            --primary-deep: #0a101c;
            --secondary: #22c55e;
            --secondary-deep: #16a34a;
            --accent: #f59e0b;
            --accent-warm: #fbbf24;
            --text-primary: #1a2433;
            --text-body: #3d4a5c;
            --text-muted: #7c8a9d;
            --text-inverse: #f4f7fb;
            --bg-body: #f5f7fb;
            --bg-card: #ffffff;
            --bg-dark: #0b1220;
            --bg-section-alt: #eef2f8;
            --border: #dce3ed;
            --border-light: #e8edf5;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 36, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 23, 36, 0.1);
            --shadow-lg: 0 16px 48px rgba(15, 23, 36, 0.16);
            --shadow-glow: 0 6px 28px rgba(34, 197, 94, 0.28);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --spacing-2xs: 6px;
            --spacing-xs: 12px;
            --spacing-sm: 18px;
            --spacing-md: 28px;
            --spacing-lg: 44px;
            --spacing-xl: 64px;
            --spacing-2xl: 84px;
            --max-width: 1180px;
            --nav-height: 72px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.25, 0.8, 0.35, 1);
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-body);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--secondary-deep);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--secondary);
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-primary);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
        }

        ul, ol {
            list-style: none;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ============ 导航 ============ */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }
        header.site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.98);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            width: 100%;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .logo-link .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--secondary), #16a34a);
            border-radius: 10px;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 900;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-body);
            border-radius: 8px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--text-primary);
            background: var(--bg-section-alt);
        }
        .nav-links a.active {
            color: var(--secondary-deep);
            background: rgba(34, 197, 94, 0.1);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: 30px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--secondary-deep);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-glow);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 8px;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        /* ============ Hero ============ */
        .hero-section {
            background: linear-gradient(168deg, var(--bg-dark) 0%, #101b2d 46%, #0e1a29 100%);
            color: var(--text-inverse);
            padding: var(--spacing-lg) 0 var(--spacing-xl);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(220, 227, 237, 0.08);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(34, 197, 94, 0.14) 0%, transparent 68%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -8%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-wrapper {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: var(--spacing-lg);
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-left .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(34, 197, 94, 0.15);
            border: 1px solid rgba(34, 197, 94, 0.3);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #86efac;
            margin-bottom: var(--spacing-sm);
        }
        .hero-left h1 {
            font-size: 2.65rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.035em;
            line-height: 1.2;
            margin-bottom: var(--spacing-xs);
        }
        .hero-left h1 .highlight {
            background: linear-gradient(135deg, #86efac, #22c55e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.08rem;
            color: rgba(220, 228, 240, 0.82);
            max-width: 620px;
            margin-bottom: var(--spacing-md);
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            margin-bottom: var(--spacing-sm);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 26px;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 30px;
            transition: all var(--transition-base);
            text-decoration: none;
            line-height: 1.3;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
        }
        .btn-primary {
            background: var(--secondary);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover {
            background: var(--secondary-deep);
            transform: translateY(-2px);
            box-shadow: 0 10px 34px rgba(34, 197, 94, 0.4);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.45);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary);
        }
        .btn-accent:hover {
            background: var(--accent-warm);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(245, 158, 11, 0.35);
            color: var(--primary);
        }
        .hero-points {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            margin-top: var(--spacing-xs);
        }
        .hero-point {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            color: rgba(220, 228, 240, 0.75);
            padding: 5px 12px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-point .dot {
            width: 7px;
            height: 7px;
            background: var(--secondary);
            border-radius: 50%;
            flex-shrink: 0;
        }

        /* 拼团面板 */
        .hero-group-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            position: relative;
        }
        .group-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .group-card-sub {
            font-size: 0.88rem;
            color: rgba(220, 228, 240, 0.7);
            margin-bottom: var(--spacing-sm);
        }
        .group-progress {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: var(--spacing-xs);
        }
        .progress-bar {
            flex: 1;
            height: 8px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            overflow: hidden;
        }
        .progress-bar-inner {
            height: 100%;
            background: linear-gradient(90deg, var(--secondary), var(--accent-warm));
            border-radius: 10px;
            transition: width 1s ease;
        }
        .group-count {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
        }
        .group-note {
            font-size: 0.82rem;
            color: rgba(220, 228, 240, 0.65);
            margin-bottom: var(--spacing-sm);
        }
        .group-actions {
            display: flex;
            gap: 10px;
        }
        .group-actions .btn {
            flex: 1;
            padding: 11px 14px;
            font-size: 0.92rem;
        }

        /* ============ 通用板块 ============ */
        section {
            padding: var(--spacing-xl) 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }
        .section-dark h2, .section-dark h3 {
            color: #fff;
        }
        .section-head {
            margin-bottom: var(--spacing-lg);
            max-width: 760px;
        }
        .section-head .section-tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--secondary-deep);
            background: rgba(34, 197, 94, 0.1);
            border-radius: 20px;
            margin-bottom: var(--spacing-xs);
        }
        .section-head h2 {
            font-size: 1.9rem;
            margin-bottom: var(--spacing-xs);
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 680px;
        }
        .section-dark .section-head p {
            color: rgba(220, 228, 240, 0.75);
        }

        /* ============ 指标看板 ============ */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
            margin-top: var(--spacing-sm);
        }
        .metric-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            text-align: center;
        }
        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(34, 197, 94, 0.3);
        }
        .metric-value {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.03em;
            margin-bottom: 4px;
            line-height: 1.2;
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ============ 服务矩阵 ============ */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-sm);
        }
        .service-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(34, 197, 94, 0.3);
        }
        .service-icon {
            width: 48px;
            height: 48px;
            background: rgba(34, 197, 94, 0.12);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            flex-shrink: 0;
        }
        .service-card h3 {
            font-size: 1.15rem;
        }
        .service-card p {
            color: var(--text-muted);
            font-size: 0.93rem;
            flex: 1;
        }
        .service-link {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--secondary-deep);
        }

        /* ============ 新闻资讯 ============ */
        .news-layout {
            display: grid;
            grid-template-columns: 1.6fr 0.8fr;
            gap: var(--spacing-lg);
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }
        .news-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: var(--spacing-sm) var(--spacing-md);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            transition: all var(--transition-fast);
        }
        .news-item:hover {
            border-color: rgba(34, 197, 94, 0.35);
            box-shadow: var(--shadow-sm);
        }
        .news-date {
            flex-shrink: 0;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--secondary-deep);
            padding: 4px 10px;
            background: rgba(34, 197, 94, 0.08);
            border-radius: 6px;
            white-space: nowrap;
        }
        .news-content {
            flex: 1;
        }
        .news-content h3 {
            font-size: 1.0rem;
            margin-bottom: 4px;
        }
        .news-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .news-read {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--secondary-deep);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-side {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
        }
        .news-side h3 {
            font-size: 1.05rem;
            margin-bottom: var(--spacing-xs);
        }
        .news-side-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .news-side-item {
            display: flex;
            gap: 10px;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .news-side-item:last-child {
            border-bottom: none;
        }
        .news-side-item img {
            width: 60px;
            height: 42px;
            object-fit: cover;
            border-radius: 6px;
            flex-shrink: 0;
        }
        .news-side-item .side-num {
            font-size: 0.8rem;
            font-weight: 800;
            color: var(--accent);
            flex-shrink: 0;
        }
        .news-side-item a {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
        }
        .news-side-item a:hover {
            color: var(--secondary-deep);
        }

        /* ============ 品牌介绍 ============ */
        .brand-section {
            background: linear-gradient(145deg, #0a1320 0%, #132030 60%, #0c1826 100%);
            color: var(--text-inverse);
            padding: var(--spacing-2xl) 0;
            position: relative;
            overflow: hidden;
        }
        .brand-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            pointer-events: none;
        }
        .brand-wrapper {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }
        .brand-text h2 {
            font-size: 1.9rem;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }
        .brand-text p {
            color: rgba(220, 228, 240, 0.78);
            font-size: 1.0rem;
            line-height: 1.8;
        }
        .brand-highlight {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            margin-top: var(--spacing-sm);
        }
        .brand-highlight span {
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 20px;
            font-size: 0.86rem;
            color: rgba(220, 228, 240, 0.8);
        }
        .brand-image-wrapper {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 300px;
            background-size: cover;
            background-position: center;
            box-shadow: var(--shadow-lg);
        }
        .brand-image-wrapper::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 18, 32, 0.5) 0%, transparent 50%);
        }

        /* ============ 保障图标条 ============ */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
        }
        .guarantee-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .guarantee-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(34, 197, 94, 0.25);
        }
        .guarantee-icon {
            font-size: 2rem;
            margin-bottom: 8px;
        }
        .guarantee-item h3 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .guarantee-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* ============ 任务进度 ============ */
        .progress-section {
            background: var(--bg-section-alt);
        }
        .progress-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
            position: relative;
        }
        .progress-steps::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 12%;
            right: 12%;
            height: 3px;
            background: var(--border);
            border-radius: 3px;
            z-index: 0;
        }
        .progress-step {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .step-circle {
            width: 56px;
            height: 56px;
            margin: 0 auto var(--spacing-xs);
            background: var(--bg-card);
            border: 3px solid var(--border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-muted);
            transition: all var(--transition-base);
        }
        .progress-step.active .step-circle {
            background: var(--secondary);
            border-color: var(--secondary);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .progress-step.completed .step-circle {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .progress-step h4 {
            font-size: 1.0rem;
            margin-bottom: 4px;
        }
        .progress-step p {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* ============ 时间线 ============ */
        .timeline-wrap {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            position: relative;
            padding-left: 28px;
            border-left: 3px solid var(--border);
        }
        .timeline-item {
            position: relative;
            padding-left: var(--spacing-sm);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -35px;
            top: 8px;
            width: 13px;
            height: 13px;
            background: var(--secondary);
            border-radius: 50%;
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.3);
        }
        .timeline-item .tl-date {
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--secondary-deep);
            margin-bottom: 2px;
        }
        .timeline-item h3 {
            font-size: 1.05rem;
            margin-bottom: 3px;
        }
        .timeline-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* ============ 片库轨道 ============ */
        .track-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: var(--spacing-xs);
        }
        .track-card {
            position: relative;
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 3/4;
            cursor: pointer;
            transition: all var(--transition-base);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
        }
        .track-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .track-card:hover img {
            transform: scale(1.08);
        }
        .track-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 18, 32, 0.85) 0%, transparent 55%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: var(--spacing-xs);
            opacity: 0;
            transition: all var(--transition-base);
        }
        .track-card:hover .track-overlay {
            opacity: 1;
        }
        .track-overlay h3 {
            font-size: 0.9rem;
            color: #fff;
            margin-bottom: 2px;
        }
        .track-overlay span {
            font-size: 0.75rem;
            color: rgba(220, 228, 240, 0.75);
        }
        .track-cta {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-warm);
        }

        /* ============ 对比模块 ============ */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
        }
        .compare-panel {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
        }
        .compare-panel.highlight {
            border-color: rgba(34, 197, 94, 0.45);
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .compare-panel.highlight::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            right: var(--spacing-sm);
            background: var(--secondary);
            color: #fff;
            padding: 3px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 700;
        }
        .compare-panel h3 {
            font-size: 1.2rem;
            margin-bottom: var(--spacing-xs);
        }
        .compare-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .compare-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-body);
        }
        .compare-list li .check {
            color: var(--secondary);
            font-weight: 800;
        }
        .compare-list li .cross {
            color: #ef4444;
            font-weight: 800;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(34, 197, 94, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: var(--spacing-sm) var(--spacing-md);
            text-align: left;
            font-weight: 700;
            font-size: 1.0rem;
            color: var(--text-primary);
            transition: all var(--transition-fast);
            gap: var(--spacing-xs);
        }
        .faq-question .faq-icon {
            font-size: 1.3rem;
            color: var(--secondary);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 var(--spacing-md) var(--spacing-sm);
            font-size: 0.92rem;
            color: var(--text-muted);
            display: none;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ============ 预约购买 / 转化表单 ============ */
        .form-section {
            background: linear-gradient(160deg, #0c1622 0%, #132232 55%, #0a1521 100%);
            color: var(--text-inverse);
        }
        .form-section h2 {
            color: #fff;
        }
        .form-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }
        .form-left h3 {
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: var(--spacing-xs);
        }
        .form-left p {
            color: rgba(220, 228, 240, 0.75);
            font-size: 1.0rem;
            line-height: 1.7;
        }
        .form-panel {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .form-panel h4 {
            font-size: 1.15rem;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }
        .form-group {
            margin-bottom: var(--spacing-xs);
        }
        .form-group label {
            display: block;
            font-size: 0.88rem;
            font-weight: 600;
            color: rgba(220, 228, 240, 0.8);
            margin-bottom: 5px;
        }
        .form-group input, .form-group select {
            width: 100%;
            padding: 11px 16px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }
        .form-group input:focus, .form-group select:focus {
            outline: none;
            border-color: var(--secondary);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
        }
        .form-group input::placeholder {
            color: rgba(220, 228, 240, 0.4);
        }
        .form-group select option {
            background: var(--bg-dark);
            color: #fff;
        }
        .form-submit {
            width: 100%;
            padding: 13px;
            background: var(--secondary);
            color: #fff;
            font-weight: 700;
            font-size: 1.0rem;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .form-submit:hover {
            background: var(--secondary-deep);
            box-shadow: var(--shadow-glow);
        }

        /* ============ CTA强条 ============ */
        .cta-bar {
            background: linear-gradient(135deg, var(--secondary-deep), var(--secondary));
            padding: var(--spacing-lg) 0;
            border-radius: var(--radius-lg);
            margin: var(--spacing-xl) 0;
            position: relative;
            overflow: hidden;
        }
        .cta-bar::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }
        .cta-bar-inner h2 {
            color: #fff;
            font-size: 1.5rem;
        }
        .cta-bar-inner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.95rem;
        }
        .cta-bar .btn {
            background: #fff;
            color: var(--secondary-deep);
            font-weight: 800;
        }
        .cta-bar .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            color: var(--secondary-deep);
        }

        /* ============ Footer ============ */
        footer.site-footer {
            background: var(--primary-deep);
            color: rgba(220, 228, 240, 0.7);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            border-top: 1px solid rgba(220, 227, 237, 0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        .footer-brand .logo-link {
            color: #fff;
            margin-bottom: var(--spacing-xs);
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(220, 228, 240, 0.6);
            max-width: 280px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1.0rem;
            margin-bottom: var(--spacing-xs);
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .footer-col ul a {
            font-size: 0.88rem;
            color: rgba(220, 228, 240, 0.65);
            transition: color var(--transition-fast);
        }
        .footer-col ul a:hover {
            color: var(--secondary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(220, 227, 237, 0.1);
            padding-top: var(--spacing-sm);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-xs);
            font-size: 0.82rem;
            color: rgba(220, 228, 240, 0.55);
        }
        .footer-bottom a {
            color: rgba(220, 228, 240, 0.65);
            font-size: 0.82rem;
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }
        .footer-legal {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .hero-wrapper {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .hero-left h1 {
                font-size: 2.2rem;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .brand-wrapper {
                grid-template-columns: 1fr;
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .progress-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .progress-steps::before {
                display: none;
            }
            .track-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .form-wrapper {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-xl: 44px;
                --spacing-2xl: 56px;
                --nav-height: 62px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: var(--spacing-sm);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 10px 14px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .hero-left h1 {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.98rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .guarantee-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .progress-steps {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .track-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .cta-bar-inner {
                flex-direction: column;
                text-align: center;
            }
            .group-actions {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .progress-steps {
                grid-template-columns: 1fr;
            }
            .track-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            section {
                padding: var(--spacing-lg) 0;
            }
            .hero-left h1 {
                font-size: 1.55rem;
            }
            .btn {
                padding: 11px 18px;
                font-size: 0.92rem;
            }
            .section-head h2 {
                font-size: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0f1724;
            --primary-deep: #0a101c;
            --secondary: #22c55e;
            --secondary-deep: #16a34a;
            --accent: #f59e0b;
            --accent-warm: #fbbf24;
            --text-primary: #1a2433;
            --text-body: #3d4a5c;
            --text-muted: #7c8a9d;
            --text-inverse: #f4f7fb;
            --bg-body: #f5f7fb;
            --bg-card: #ffffff;
            --bg-dark: #0b1220;
            --bg-section-alt: #eef2f8;
            --border: #dce3ed;
            --border-light: #e8edf5;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 36, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 23, 36, 0.1);
            --shadow-lg: 0 16px 48px rgba(15, 23, 36, 0.16);
            --shadow-glow: 0 6px 28px rgba(34, 197, 94, 0.28);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --spacing-2xs: 6px;
            --spacing-xs: 12px;
            --spacing-sm: 18px;
            --spacing-md: 28px;
            --spacing-lg: 44px;
            --spacing-xl: 64px;
            --spacing-2xl: 84px;
            --max-width: 1180px;
            --nav-height: 72px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.25, 0.8, 0.35, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-body);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--secondary-deep);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--secondary);
        }

        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        /* ============ 导航 ============ */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }

        header.site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.98);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            width: 100%;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary);
            letter-spacing: -0.02em;
        }

        .logo-link .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--secondary), #16a34a);
            border-radius: 10px;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 900;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-body);
            border-radius: 8px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--text-primary);
            background: var(--bg-section-alt);
        }

        .nav-links a.active {
            color: var(--secondary-deep);
            background: rgba(34, 197, 94, 0.1);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            border-radius: 10px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--primary-deep);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            background: var(--bg-section-alt);
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* ============ Section 通用 ============ */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section--alt {
            background: var(--bg-section-alt);
        }

        .section--dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }

        .section--dark .section-title,
        .section--dark .section-subtitle {
            color: var(--text-inverse);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin: 0 0 var(--spacing-xs) 0;
            line-height: 1.25;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin: 0 0 var(--spacing-lg) 0;
            max-width: 720px;
            line-height: 1.7;
        }

        .section-header {
            margin-bottom: var(--spacing-lg);
        }

        .section-header--center {
            text-align: center;
        }

        .section-header--center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ============ Hero Bento ============ */
        .hero-bento {
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            background: linear-gradient(180deg, #fff 0%, var(--bg-body) 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-bento::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(34, 197, 94, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .bento-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            grid-template-rows: auto auto;
            gap: var(--spacing-md);
            position: relative;
            z-index: 1;
        }

        .bento-main {
            grid-row: span 2;
            background: var(--primary);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg);
            color: var(--text-inverse);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 420px;
            position: relative;
            overflow: hidden;
        }

        .bento-main::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -40px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(34, 197, 94, 0.28) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .bento-main .bento-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(34, 197, 94, 0.15);
            color: #6ee7a0;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: 20px;
            width: fit-content;
            margin-bottom: var(--spacing-md);
        }

        .bento-main h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            margin: 0 0 var(--spacing-sm) 0;
            line-height: 1.18;
            color: #fff;
        }

        .bento-main p {
            font-size: 1.1rem;
            color: rgba(244, 247, 251, 0.82);
            max-width: 540px;
            line-height: 1.75;
            margin: 0 0 var(--spacing-md) 0;
        }

        .bento-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            margin-top: auto;
            position: relative;
            z-index: 1;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--secondary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--secondary-deep);
            transform: translateY(-1px);
            box-shadow: var(--shadow-glow);
            color: #fff;
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.35);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
        }

        .bento-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
            transition: all var(--transition-base);
            position: relative;
            z-index: 1;
        }

        .bento-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .bento-card .bento-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            font-size: 1.2rem;
            margin-bottom: var(--spacing-sm);
        }

        .bento-card .bento-icon--green {
            background: rgba(34, 197, 94, 0.12);
            color: var(--secondary-deep);
        }

        .bento-card .bento-icon--amber {
            background: rgba(245, 158, 11, 0.14);
            color: #d97706;
        }

        .bento-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 var(--spacing-2xs) 0;
        }

        .bento-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        .bento-overline {
            font-size: 0.78rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--text-muted);
            margin-bottom: var(--spacing-2xs);
        }

        /* ============ 指标看板 ============ */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
        }

        .metric-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .metric-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .metric-number .metric-unit {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--secondary-deep);
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: var(--spacing-2xs);
            font-weight: 500;
        }

        /* ============ 服务矩阵 ============ */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .service-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .service-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .service-card .service-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 16px;
            font-size: 1.4rem;
            background: rgba(34, 197, 94, 0.1);
            color: var(--secondary-deep);
            margin-bottom: var(--spacing-2xs);
        }

        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
        }

        .service-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        .service-card .service-tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--bg-section-alt);
            color: var(--text-body);
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 20px;
            width: fit-content;
        }

        /* ============ 数据更新流程 ============ */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .process-step {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition-base);
        }

        .process-step:hover {
            box-shadow: var(--shadow-md);
        }

        .process-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary), #16a34a);
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: var(--spacing-sm);
        }

        .process-step h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 var(--spacing-2xs) 0;
        }

        .process-step p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* ============ 结果对比 ============ */
        .comparison-table-wrap {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-light);
        }

        .comparison-table th {
            background: var(--bg-section-alt);
            font-weight: 700;
            color: var(--text-primary);
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .comparison-table td:first-child {
            font-weight: 600;
            color: var(--text-primary);
            width: 30%;
        }

        .comparison-table tr:last-child td {
            border-bottom: 0;
        }

        .comparison-table .highlight-col {
            background: rgba(34, 197, 94, 0.06);
        }

        .comparison-table .check-icon {
            color: var(--secondary-deep);
            font-weight: 700;
        }

        .comparison-table .x-icon {
            color: #dc2626;
            font-weight: 700;
        }

        /* ============ 用户评价 ============ */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .testimonial-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
        }

        .testimonial-card .quote-mark {
            font-size: 2rem;
            color: var(--secondary);
            line-height: 1;
            margin-bottom: var(--spacing-xs);
            font-weight: 800;
        }

        .testimonial-card blockquote {
            margin: 0 0 var(--spacing-sm) 0;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.75;
            font-style: normal;
        }

        .testimonial-card .author {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .testimonial-card .author-role {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(34, 197, 94, 0.3);
        }

        .faq-item summary {
            padding: 18px 22px;
            font-weight: 700;
            color: var(--text-primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-xs);
            font-size: 1rem;
            transition: color var(--transition-fast);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 300;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item .faq-content {
            padding: 0 22px 18px;
            color: var(--text-body);
            font-size: 0.93rem;
            line-height: 1.75;
        }

        /* ============ CTA 表单 ============ */
        .cta-form-section {
            background: var(--primary);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg);
            color: var(--text-inverse);
            position: relative;
            overflow: hidden;
        }

        .cta-form-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: -40px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(34, 197, 94, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            position: relative;
            z-index: 1;
            align-items: center;
        }

        .cta-form-section h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 var(--spacing-xs) 0;
            letter-spacing: -0.02em;
        }

        .cta-form-section .cta-desc {
            color: rgba(244, 247, 251, 0.8);
            font-size: 1rem;
            line-height: 1.7;
            margin: 0;
        }

        .form-group {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }

        .form-group input {
            flex: 1;
            min-width: 200px;
            padding: 13px 18px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }

        .form-group input::placeholder {
            color: rgba(244, 247, 251, 0.55);
        }

        .form-group input:focus {
            outline: none;
            border-color: var(--secondary);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
        }

        .form-group .btn-primary {
            padding: 13px 28px;
        }

        .form-note {
            font-size: 0.8rem;
            color: rgba(244, 247, 251, 0.55);
            margin-top: var(--spacing-2xs);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(244, 247, 251, 0.78);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand .logo-link {
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(244, 247, 251, 0.62);
            line-height: 1.7;
            max-width: 320px;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 var(--spacing-sm) 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: rgba(244, 247, 251, 0.62);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs) var(--spacing-sm);
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: rgba(244, 247, 251, 0.5);
        }

        .footer-legal {
            display: flex;
            gap: var(--spacing-sm);
        }

        .footer-legal a {
            color: rgba(244, 247, 251, 0.5);
            font-size: 0.8rem;
        }

        .footer-legal a:hover {
            color: #fff;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .bento-grid {
                grid-template-columns: 1fr;
            }

            .bento-main {
                grid-row: auto;
                min-height: 320px;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 62px;
                --spacing-xl: 44px;
                --spacing-2xl: 56px;
            }

            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: var(--spacing-sm);
                gap: 6px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border-light);
                display: none;
                z-index: 999;
                max-height: calc(100vh - var(--nav-height));
                overflow-y: auto;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                padding: 12px 16px;
                font-size: 1rem;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-cta {
                display: none;
            }

            .bento-main h1 {
                font-size: 1.9rem;
            }

            .bento-main p {
                font-size: 1rem;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xs);
            }

            .service-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }

            .process-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }

            .testimonials-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }

            .comparison-table th,
            .comparison-table td {
                padding: 12px 14px;
                font-size: 0.85rem;
            }

            .comparison-table td:first-child {
                width: 40%;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }

            .form-group input {
                min-width: 100%;
            }

            .form-group .btn-primary {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .bento-main {
                padding: var(--spacing-md);
                min-height: auto;
            }

            .bento-main h1 {
                font-size: 1.6rem;
            }

            .bento-actions {
                flex-direction: column;
            }

            .bento-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: var(--spacing-2xs);
            }

            .footer-legal {
                flex-wrap: wrap;
                justify-content: center;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0f1724;
            --primary-deep: #0a101c;
            --secondary: #22c55e;
            --secondary-deep: #16a34a;
            --accent: #f59e0b;
            --accent-warm: #fbbf24;
            --text-primary: #1a2433;
            --text-body: #3d4a5c;
            --text-muted: #7c8a9d;
            --text-inverse: #f4f7fb;
            --bg-body: #f5f7fb;
            --bg-card: #ffffff;
            --bg-dark: #0b1220;
            --bg-section-alt: #eef2f8;
            --border: #dce3ed;
            --border-light: #e8edf5;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 36, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 23, 36, 0.1);
            --shadow-lg: 0 16px 48px rgba(15, 23, 36, 0.16);
            --shadow-glow: 0 6px 28px rgba(34, 197, 94, 0.28);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --spacing-2xs: 6px;
            --spacing-xs: 12px;
            --spacing-sm: 18px;
            --spacing-md: 28px;
            --spacing-lg: 44px;
            --spacing-xl: 64px;
            --spacing-2xl: 84px;
            --max-width: 1180px;
            --nav-height: 72px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.25, 0.8, 0.35, 1);
        }
        @media (max-width: 992px) {
            :root { --spacing-xl: 44px; --spacing-2xl: 56px; --nav-height: 62px; }
        }
        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; border: 0; }
        a { color: var(--secondary-deep); text-decoration: none; transition: color var(--transition-fast); }
        a:hover { color: var(--secondary); }
        a:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; line-height: inherit; }
        button { cursor: pointer; border: none; background: none; }
        button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-sm); }

        /* ============ 导航 ============ */
        header.site-header {
            position: sticky; top: 0; z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height); display: flex; align-items: center;
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }
        header.site-header.scrolled { box-shadow: var(--shadow-md); background: rgba(255, 255, 255, 0.98); }
        .nav-wrapper { display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-sm); width: 100%; }
        .logo-link { display: flex; align-items: center; gap: 10px; flex-shrink: 0; font-weight: 800; font-size: 1.35rem; color: var(--primary); letter-spacing: -0.02em; }
        .logo-link .logo-mark {
            display: inline-flex; align-items: center; justify-content: center;
            width: 38px; height: 38px;
            background: linear-gradient(135deg, var(--secondary), #16a34a);
            border-radius: 10px; color: #fff; font-size: 0.9rem; font-weight: 900; flex-shrink: 0;
        }
        .nav-links { display: flex; align-items: center; gap: 2px; flex-wrap: nowrap; }
        .nav-links a {
            display: inline-block; padding: 8px 12px; font-size: 0.93rem; font-weight: 600;
            color: var(--text-body); border-radius: 8px; transition: all var(--transition-fast); position: relative; white-space: nowrap;
        }
        .nav-links a:hover { color: var(--text-primary); background: var(--bg-section-alt); }
        .nav-links a.active { color: var(--secondary-deep); background: rgba(34, 197, 94, 0.12); }
        .nav-cta {
            display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-deep)); color: #fff;
            font-weight: 700; font-size: 0.95rem; border-radius: 50px; white-space: nowrap;
            box-shadow: var(--shadow-glow); transition: all var(--transition-base); flex-shrink: 0;
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 36px rgba(34, 197, 94, 0.38); color: #fff; }
        .nav-toggle { display: none; width: 40px; height: 40px; border-radius: 8px; background: var(--bg-section-alt); position: relative; flex-shrink: 0; }
        .nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text-primary); margin: 4px auto; border-radius: 2px; transition: all var(--transition-base); }

        @media (max-width: 1024px) {
            .nav-links a { padding: 8px 8px; font-size: 0.85rem; }
            .nav-cta { padding: 8px 14px; font-size: 0.85rem; }
        }
        @media (max-width: 900px) {
            .nav-toggle { display: block; }
            .nav-links {
                position: absolute; top: var(--nav-height); left: 0; right: 0;
                flex-direction: column; align-items: stretch; gap: 0;
                background: #fff; border-bottom: 1px solid var(--border-light);
                padding: 12px 16px; display: none; box-shadow: var(--shadow-md);
                max-height: calc(100vh - var(--nav-height)); overflow-y: auto;
            }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 12px 16px; font-size: 1rem; border-radius: 8px; }
            .nav-cta { display: none; }
        }

        /* ============ 通用板块 ============ */
        .section { padding: var(--spacing-xl) 0; position: relative; }
        .section-alt { background: var(--bg-section-alt); }
        .section-dark { background: var(--bg-dark); color: var(--text-inverse); }
        .section-dark .section-title { color: #fff; }
        .section-dark .section-desc { color: rgba(244, 247, 251, 0.75); }
        .section-title { font-size: 2rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.02em; line-height: 1.3; margin-bottom: 12px; }
        .section-desc { font-size: 1.05rem; color: var(--text-muted); max-width: 720px; line-height: 1.8; }
        .section-label {
            display: inline-flex; align-items: center; gap: 6px; font-size: 0.85rem; font-weight: 700;
            color: var(--secondary-deep); background: rgba(34, 197, 94, 0.1); padding: 6px 16px; border-radius: 50px;
            letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 12px;
        }
        .section-label.dark { color: var(--accent-warm); background: rgba(245, 158, 11, 0.15); }

        /* ============ Hero 白皮书获客 ============ */
        .hero-whitepaper {
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            background: linear-gradient(160deg, #ffffff 0%, #f5f9f7 35%, #eaf3ee 100%);
            position: relative; overflow: hidden;
        }
        .hero-whitepaper::before {
            content: ''; position: absolute; top: -120px; right: -120px; width: 420px; height: 420px;
            background: radial-gradient(circle, rgba(34, 197, 94, 0.12) 0%, transparent 70%); border-radius: 50%;
        }
        .hero-whitepaper::after {
            content: ''; position: absolute; bottom: -80px; left: -60px; width: 280px; height: 280px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, transparent 70%); border-radius: 50%;
        }
        .whitepaper-cover {
            background: linear-gradient(145deg, #0f1724, #1e2b3f);
            border-radius: var(--radius-lg); padding: 26px;
            box-shadow: var(--shadow-lg); position: relative; overflow: hidden;
        }
        .whitepaper-cover .cover-badge {
            position: absolute; top: 20px; left: 20px; z-index: 2;
            background: var(--accent); color: #1a2433; font-weight: 800; font-size: 0.75rem;
            padding: 6px 14px; border-radius: 50px; letter-spacing: 0.04em;
        }
        .whitepaper-cover img {
            border-radius: var(--radius-md); width: 100%; height: 320px; object-fit: cover;
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        }
        .whitepaper-cover .cover-meta {
            display: flex; align-items: center; justify-content: space-between; margin-top: 16px;
            color: rgba(244, 247, 251, 0.8); font-size: 0.85rem;
        }
        .hero-whitepaper h1 { font-size: 2.6rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.02em; line-height: 1.25; margin-bottom: 16px; }
        .hero-whitepaper .hero-sub { font-size: 1.1rem; color: var(--text-body); line-height: 1.8; max-width: 560px; margin-bottom: 20px; }
        .toc-list { list-style: none; padding: 0; margin: 0 0 20px; }
        .toc-list li { display: flex; align-items: center; gap: 12px; padding: 8px 0; font-size: 0.95rem; color: var(--text-body); }
        .toc-list li .toc-num {
            width: 26px; height: 26px; flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center;
            background: var(--bg-section-alt); color: var(--secondary-deep); font-weight: 700; font-size: 0.8rem; border-radius: 6px;
        }
        .hero-form-card {
            background: #fff; border-radius: var(--radius-lg); padding: 28px;
            box-shadow: var(--shadow-lg); border: 1px solid var(--border-light);
        }
        .hero-form-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
        .hero-form-card p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 16px; }
        .hero-form-card .form-control { border-radius: var(--radius-sm); border: 1px solid var(--border); padding: 10px 14px; font-size: 0.95rem; }
        .hero-form-card .form-control:focus { border-color: var(--secondary); box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.15); }
        .btn-primary-custom {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-deep)); color: #fff;
            font-weight: 700; padding: 12px 24px; border-radius: 50px; font-size: 0.95rem;
            transition: all var(--transition-base); border: none; width: 100%;
        }
        .btn-primary-custom:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(34, 197, 94, 0.35); color: #fff; }
        .btn-outline-custom {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            border: 2px solid var(--border); color: var(--text-primary); font-weight: 600;
            padding: 10px 22px; border-radius: 50px; font-size: 0.9rem; transition: all var(--transition-base);
        }
        .btn-outline-custom:hover { border-color: var(--secondary); color: var(--secondary-deep); background: rgba(34, 197, 94, 0.05); }

        /* ============ 指标看板 ============ */
        .metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
        .metric-card {
            background: var(--bg-card); border-radius: var(--radius-lg); padding: 24px;
            border: 1px solid var(--border-light); transition: all var(--transition-base); text-align: center;
        }
        .metric-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(34, 197, 94, 0.3); }
        .metric-icon { font-size: 1.8rem; color: var(--secondary); margin-bottom: 10px; }
        .metric-value { font-size: 2.4rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.03em; line-height: 1.1; }
        .metric-card p { margin: 8px 0 0; font-size: 0.85rem; color: var(--text-muted); }

        /* ============ 服务矩阵 ============ */
        .service-matrix { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
        .service-card {
            background: var(--bg-card); border-radius: var(--radius-lg); padding: 28px;
            border: 1px solid var(--border-light); transition: all var(--transition-base);
            display: flex; flex-direction: column; gap: 12px;
        }
        .service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(34, 197, 94, 0.35); }
        .service-card .service-icon {
            width: 48px; height: 48px; display: inline-flex; align-items: center; justify-content: center;
            background: rgba(34, 197, 94, 0.1); border-radius: 12px; font-size: 1.4rem; color: var(--secondary-deep);
        }
        .service-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-primary); margin: 0; }
        .service-card p { font-size: 0.9rem; color: var(--text-muted); margin: 0; flex-grow: 1; }
        .tag-list { display: flex; flex-wrap: wrap; gap: 6px; }
        .tag {
            font-size: 0.75rem; font-weight: 600; padding: 4px 10px; border-radius: 50px;
            background: var(--bg-section-alt); color: var(--text-body);
        }
        .tag.highlight { background: rgba(34, 197, 94, 0.12); color: var(--secondary-deep); }

        /* ============ 结果对比 ============ */
        .comparison-panel {
            background: var(--bg-card); border-radius: var(--radius-xl); overflow: hidden;
            box-shadow: var(--shadow-md); border: 1px solid var(--border-light);
        }
        .comparison-header { background: var(--bg-dark); padding: 18px 28px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
        .comparison-header h3 { color: #fff; font-size: 1.1rem; font-weight: 700; margin: 0; }
        .comparison-header .versus-badge { background: var(--accent); color: #1a2433; font-weight: 800; padding: 5px 14px; border-radius: 50px; font-size: 0.8rem; }
        .comparison-body { padding: 28px; }
        .compare-row { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border-light); }
        .compare-row:last-child { border-bottom: none; }
        .compare-value { font-weight: 700; font-size: 1rem; color: var(--text-primary); }
        .compare-value.high { color: var(--secondary-deep); }
        .compare-label { font-size: 0.8rem; color: var(--text-muted); text-align: center; }

        /* ============ 深度内容 ============ */
        .insight-card {
            background: var(--bg-card); border-radius: var(--radius-lg); padding: 30px;
            border: 1px solid var(--border-light); transition: all var(--transition-base);
        }
        .insight-card:hover { box-shadow: var(--shadow-md); }
        .insight-card h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-primary); margin-bottom: 10px; }
        .insight-card p { font-size: 0.95rem; color: var(--text-body); line-height: 1.85; }
        .insight-card img { border-radius: var(--radius-md); height: 200px; object-fit: cover; margin-bottom: 16px; }

        /* ============ 流程 ============ */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .step-card { text-align: center; padding: 24px 16px; border-radius: var(--radius-lg); transition: all var(--transition-base); }
        .step-card:hover { background: rgba(255, 255, 255, 0.08); }
        .step-num {
            width: 52px; height: 52px; display: flex; align-items: center; justify-content: center;
            font-size: 1.3rem; font-weight: 800; border-radius: 50%; margin: 0 auto 12px;
            background: rgba(245, 158, 11, 0.2); color: var(--accent-warm); border: 2px solid rgba(245, 158, 11, 0.4);
        }
        .step-card h3 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
        .step-card p { font-size: 0.85rem; color: rgba(244, 247, 251, 0.7); margin: 0; }

        /* ============ 见证 ============ */
        .testimonial-card {
            background: var(--bg-card); border-radius: var(--radius-lg); padding: 24px;
            border: 1px solid var(--border-light); transition: all var(--transition-base); height: 100%;
        }
        .testimonial-card:hover { box-shadow: var(--shadow-md); }
        .testimonial-card blockquote { font-size: 0.95rem; color: var(--text-body); line-height: 1.8; margin: 0 0 12px; }
        .testimonial-card .t-user { display: flex; align-items: center; gap: 10px; }
        .t-avatar {
            width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-deep)); color: #fff; font-weight: 700; font-size: 0.85rem;
        }
        .t-user span { font-size: 0.85rem; font-weight: 600; color: var(--text-primary); }

        /* ============ FAQ ============ */
        .faq-list { max-width: 860px; margin: 0 auto; }
        .accordion-item {
            border: 1px solid var(--border-light); border-radius: var(--radius-md); margin-bottom: 12px;
            background: var(--bg-card); overflow: hidden; transition: all var(--transition-base);
        }
        .accordion-item:hover { border-color: rgba(34, 197, 94, 0.4); }
        .accordion-header button {
            display: flex; align-items: center; justify-content: space-between; gap: 12px;
            padding: 18px 22px; font-weight: 700; font-size: 1rem; color: var(--text-primary);
            width: 100%; text-align: left; transition: all var(--transition-fast);
        }
        .accordion-header button:hover { color: var(--secondary-deep); }
        .accordion-header button .fa { transition: transform var(--transition-base); color: var(--text-muted); }
        .accordion-button:not(.collapsed) .fa { transform: rotate(180deg); color: var(--secondary-deep); }
        .accordion-body { padding: 4px 22px 20px; font-size: 0.95rem; color: var(--text-body); line-height: 1.8; }

        /* ============ CTA 表单 ============ */
        .cta-section {
            background: linear-gradient(140deg, #0f1724 0%, #16202f 50%, #0f1724 100%);
            border-radius: var(--radius-xl); padding: var(--spacing-lg);
            color: var(--text-inverse); position: relative; overflow: hidden;
        }
        .cta-section::after {
            content: ''; position: absolute; top: -100px; right: -100px; width: 300px; height: 300px;
            background: radial-gradient(circle, rgba(34, 197, 94, 0.2) 0%, transparent 70%); border-radius: 50%;
        }
        .cta-section h2 { font-size: 1.8rem; font-weight: 800; color: #fff; letter-spacing: -0.02em; margin-bottom: 8px; }
        .cta-section p { color: rgba(244, 247, 251, 0.75); font-size: 1rem; max-width: 520px; line-height: 1.8; }
        .cta-form .form-control {
            background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff; border-radius: var(--radius-sm); padding: 12px 16px; font-size: 0.95rem;
        }
        .cta-form .form-control::placeholder { color: rgba(244, 247, 251, 0.5); }
        .cta-form .form-control:focus { background: rgba(255, 255, 255, 0.12); border-color: var(--secondary); box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.25); color: #fff; }
        .cta-form label { font-size: 0.85rem; font-weight: 600; color: rgba(244, 247, 251, 0.8); margin-bottom: 4px; }
        .cta-form .btn-submit {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-deep)); color: #fff;
            font-weight: 700; padding: 14px 28px; border-radius: 50px; font-size: 1rem;
            transition: all var(--transition-base); border: none; width: 100%;
        }
        .cta-form .btn-submit:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(34, 197, 94, 0.4); }

        /* ============ 页脚 ============ */
        .site-footer { background: #0a101c; color: rgba(244, 247, 251, 0.7); padding: var(--spacing-lg) 0 24px; }
        .footer-grid { display: grid; grid-template-columns: 2.2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; margin-top: 12px; max-width: 300px; color: rgba(244, 247, 251, 0.6); }
        .footer-col h4 { color: #fff; font-size: 0.95rem; font-weight: 700; margin-bottom: 14px; }
        .footer-col ul { list-style: none; padding: 0; margin: 0; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul a { color: rgba(244, 247, 251, 0.6); font-size: 0.88rem; transition: all var(--transition-fast); }
        .footer-col ul a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(244, 247, 251, 0.1); padding-top: 18px;
            display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
            font-size: 0.8rem; color: rgba(244, 247, 251, 0.5);
        }
        .footer-legal { display: flex; gap: 16px; }
        .footer-legal a { color: rgba(244, 247, 251, 0.5); font-size: 0.8rem; }
        .footer-legal a:hover { color: var(--secondary); }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .metrics-grid { grid-template-columns: repeat(2, 1fr); }
            .service-matrix { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .hero-whitepaper h1 { font-size: 1.9rem; }
            .section-title { font-size: 1.6rem; }
            .whitepaper-cover img { height: 220px; }
            .service-matrix { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .comparison-body { padding: 18px; }
            .compare-row { grid-template-columns: 1fr auto 1fr; gap: 6px; font-size: 0.85rem; }
            .footer-bottom { flex-direction: column; text-align: center; gap: 8px; }
            .cta-section { padding: 32px 20px; }
        }
        @media (max-width: 520px) {
            :root { --spacing-xl: 32px; --spacing-lg: 28px; }
            .hero-whitepaper { padding-top: 40px; }
            .hero-whitepaper h1 { font-size: 1.6rem; }
            .metrics-grid { grid-template-columns: 1fr; }
            .section-title { font-size: 1.4rem; }
            .nav-cta { display: none; }
        }

        /* 细节动效 */
        .fade-in-up { animation: fadeInUp 0.7s ease forwards; opacity: 0; }
        @keyframes fadeInUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
        .delay-1 { animation-delay: 0.1s; } .delay-2 { animation-delay: 0.2s; } .delay-3 { animation-delay: 0.3s; } .delay-4 { animation-delay: 0.4s; }

/* roulang page: category1 */
:root {
            --primary: #0f1724;
            --primary-deep: #0a101c;
            --secondary: #22c55e;
            --secondary-deep: #16a34a;
            --accent: #f59e0b;
            --accent-warm: #fbbf24;
            --text-primary: #1a2433;
            --text-body: #3d4a5c;
            --text-muted: #7c8a9d;
            --text-inverse: #f4f7fb;
            --bg-body: #f5f7fb;
            --bg-card: #ffffff;
            --bg-dark: #0b1220;
            --bg-section-alt: #eef2f8;
            --border: #dce3ed;
            --border-light: #e8edf5;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 36, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 23, 36, 0.1);
            --shadow-lg: 0 16px 48px rgba(15, 23, 36, 0.16);
            --shadow-glow: 0 6px 28px rgba(34, 197, 94, 0.28);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --spacing-2xs: 6px;
            --spacing-xs: 12px;
            --spacing-sm: 18px;
            --spacing-md: 28px;
            --spacing-lg: 44px;
            --spacing-xl: 56px;
            --spacing-2xl: 72px;
            --max-width: 1180px;
            --nav-height: 62px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.25, 0.8, 0.35, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-body);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--secondary-deep);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--secondary);
        }

        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        /* ============ 导航 ============ */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }

        header.site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.98);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            width: 100%;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary);
            letter-spacing: -0.02em;
        }

        .logo-link .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--secondary), #16a34a);
            border-radius: 10px;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 900;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-body);
            border-radius: 8px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--text-primary);
            background: var(--bg-section-alt);
        }

        .nav-links a.active {
            color: var(--secondary-deep);
            background: rgba(34, 197, 94, 0.1);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.92rem;
            border-radius: 10px;
            transition: all var(--transition-fast);
            flex-shrink: 0;
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--secondary-deep);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: var(--bg-section-alt);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ============ 按钮系统 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: 10px;
            transition: all var(--transition-base);
            cursor: pointer;
            border: 1px solid transparent;
            line-height: 1.4;
            text-align: center;
            justify-content: center;
        }

        .btn-primary {
            background: var(--secondary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: var(--secondary-deep);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        .btn-dark {
            background: var(--primary);
            color: #fff;
        }

        .btn-dark:hover {
            background: var(--primary-deep);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--border);
        }

        .btn-outline:hover {
            border-color: var(--secondary);
            color: var(--secondary-deep);
            background: rgba(34, 197, 94, 0.06);
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }

        .btn-light:hover {
            background: var(--bg-section-alt);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ============ 徽章/标签 ============ */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(34, 197, 94, 0.1);
            color: var(--secondary-deep);
            letter-spacing: 0.02em;
        }

        .badge-accent {
            background: rgba(245, 158, 11, 0.12);
            color: #b45309;
        }

        .badge-dark {
            background: rgba(15, 23, 36, 0.08);
            color: var(--text-primary);
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 6px;
            background: var(--bg-section-alt);
            color: var(--text-body);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }

        .tag:hover {
            background: rgba(34, 197, 94, 0.08);
            color: var(--secondary-deep);
            border-color: rgba(34, 197, 94, 0.3);
        }

        /* ============ 卡片系统 ============ */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--border);
        }

        /* ============ FAQ ============ */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: var(--spacing-sm) var(--spacing-md);
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            font-weight: 700;
            color: var(--text-primary);
            font-size: 1.02rem;
            padding: 4px 0;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--secondary-deep);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
            color: var(--text-body);
            font-size: 0.95rem;
        }

        .faq-item.open .faq-answer {
            max-height: 600px;
        }

        .faq-answer p {
            padding-top: 8px;
            padding-bottom: 4px;
            line-height: 1.7;
        }

        /* ============ 表单系统 ============ */
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: var(--spacing-sm);
        }

        .form-group label {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .form-control {
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 10px;
            font-size: 0.95rem;
            color: var(--text-primary);
            background: #fff;
            transition: all var(--transition-fast);
            width: 100%;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.12);
        }

        .form-control::placeholder {
            color: var(--text-muted);
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%237c8a9d' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            padding-right: 44px;
        }

        textarea.form-control {
            min-height: 100px;
            resize: vertical;
        }

        /* ============ Hero ============ */
        .page-hero {
            background: linear-gradient(135deg, rgba(15, 23, 36, 0.92) 0%, rgba(10, 16, 28, 0.88) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            color: #fff;
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            position: relative;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary), var(--accent-warm), var(--secondary));
            background-size: 200% 100%;
            animation: heroShine 6s ease-in-out infinite;
        }

        @keyframes heroShine {
            0%, 100% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
        }

        .hero-content {
            max-width: 760px;
        }

        .hero-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin: var(--spacing-xs) 0 var(--spacing-sm);
            color: #fff;
        }

        .hero-content .hero-subtitle {
            font-size: 1.12rem;
            color: rgba(244, 247, 251, 0.85);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            margin-bottom: var(--spacing-md);
        }

        .hero-meta .hero-stat {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.88rem;
            font-weight: 600;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .hero-meta .hero-stat strong {
            color: var(--accent-warm);
            font-size: 1.05rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            margin-top: var(--spacing-sm);
        }

        /* ============ 普通 Section ============ */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-alt {
            background: var(--bg-section-alt);
        }

        .section-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }

        .section-header {
            margin-bottom: var(--spacing-md);
        }

        .section-header h2 {
            font-size: 1.85rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 8px;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 620px;
        }

        .section-dark .section-header h2 {
            color: #fff;
        }

        .section-dark .section-header p {
            color: rgba(244, 247, 251, 0.7);
        }

        /* ============ 指标看板 ============ */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
            margin-top: var(--spacing-md);
        }

        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--secondary), #4ade80);
            border-radius: 0 0 4px 4px;
            transform: scaleX(0.3);
            transform-origin: left;
            transition: transform var(--transition-slow);
        }

        .metric-card:hover::before {
            transform: scaleX(1);
        }

        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .metric-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .metric-number .unit {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-left: 2px;
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-top: 4px;
        }

        /* ============ 服务矩阵 ============ */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-sm);
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(34, 197, 94, 0.25);
        }

        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(34, 197, 94, 0.04));
            color: var(--secondary-deep);
            border: 1px solid rgba(34, 197, 94, 0.2);
        }

        .service-card h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 2px;
        }

        .service-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.65;
            flex: 1;
        }

        .service-card .service-link {
            font-weight: 700;
            font-size: 0.88rem;
            color: var(--secondary-deep);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-fast);
        }

        .service-card .service-link:hover {
            color: var(--secondary);
            gap: 10px;
        }

        /* ============ 对比表格 ============ */
        .comparison-wrapper {
            overflow-x: auto;
            margin-top: var(--spacing-md);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-light);
        }

        .comparison-table th {
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.92rem;
            letter-spacing: 0.01em;
        }

        .comparison-table th:first-child {
            border-radius: 0;
        }

        .comparison-table td {
            font-size: 0.92rem;
            color: var(--text-body);
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .comparison-table .highlight-col {
            background: rgba(34, 197, 94, 0.07);
            font-weight: 600;
            color: var(--primary);
        }

        .comparison-table .check-mark {
            color: var(--secondary-deep);
            font-weight: 800;
            font-size: 1.1rem;
        }

        .comparison-table .cross-mark {
            color: #ef4444;
            font-weight: 600;
        }

        /* ============ 深度内容 ============ */
        .knowledge-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }

        .knowledge-text h3 {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
            letter-spacing: -0.01em;
        }

        .knowledge-text p {
            font-size: 0.98rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: var(--spacing-sm);
        }

        .knowledge-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .knowledge-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .knowledge-image:hover img {
            transform: scale(1.04);
        }

        .knowledge-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(15, 23, 36, 0.3));
            pointer-events: none;
        }

        /* ============ 品牌介绍 ============ */
        .brand-intro-block {
            background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-section-alt) 100%);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }

        .brand-intro-block .brand-text h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
        }

        .brand-intro-block .brand-text p {
            font-size: 0.98rem;
            color: var(--text-body);
            line-height: 1.8;
        }

        .brand-intro-block .brand-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-sm);
        }

        .brand-stat {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: var(--spacing-sm);
            text-align: center;
            transition: all var(--transition-fast);
        }

        .brand-stat:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .brand-stat .stat-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--secondary-deep);
        }

        .brand-stat .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ============ 适用场景 ============ */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-sm);
        }

        .scenario-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: all var(--transition-base);
            cursor: default;
        }

        .scenario-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(34, 197, 94, 0.2);
        }

        .scenario-item .scenario-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: rgba(34, 197, 94, 0.15);
            line-height: 1;
            margin-bottom: 8px;
        }

        .scenario-item h4 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .scenario-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ============ FAQ ============ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            max-width: 800px;
            margin: 0 auto;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
            color: #fff;
            padding: var(--spacing-xl) 0;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: start;
        }

        .cta-info h2 {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: var(--spacing-xs);
        }

        .cta-info p {
            font-size: 0.98rem;
            color: rgba(244, 247, 251, 0.8);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
        }

        .cta-info .cta-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-2xs);
        }

        .cta-info .cta-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.92rem;
            color: rgba(244, 247, 251, 0.85);
            line-height: 1.5;
        }

        .cta-info .cta-points li::before {
            content: '✓';
            color: var(--secondary);
            font-weight: 800;
            flex-shrink: 0;
        }

        .cta-form-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-lg);
            color: var(--text-body);
        }

        .cta-form-card h3 {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
        }

        .cta-form-card .form-hint {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: var(--spacing-2xs);
        }

        /* ============ Footer ============ */
        footer.site-footer {
            background: var(--bg-dark);
            color: rgba(244, 247, 251, 0.75);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            margin-top: var(--spacing-xs);
            max-width: 320px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            color: rgba(244, 247, 251, 0.6);
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: rgba(244, 247, 251, 0.5);
        }

        .footer-legal {
            display: flex;
            gap: var(--spacing-sm);
        }

        .footer-legal a {
            color: rgba(244, 247, 251, 0.5);
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }

        .footer-legal a:hover {
            color: var(--secondary);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .knowledge-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .brand-intro-block {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
                --spacing-xl: 36px;
                --spacing-2xl: 44px;
                --spacing-lg: 30px;
                --spacing-md: 22px;
                --spacing-sm: 16px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: var(--spacing-sm);
                gap: 6px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                width: 100%;
                padding: 10px 16px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-cta {
                padding: 8px 16px;
                font-size: 0.85rem;
            }

            .hero-content h1 {
                font-size: 1.9rem;
            }

            .hero-content .hero-subtitle {
                font-size: 1rem;
            }

            .section-header h2 {
                font-size: 1.5rem;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }

            .metric-number {
                font-size: 1.7rem;
            }

            .services-grid {
                grid-template-columns: 1fr;
            }

            .scenarios-grid {
                grid-template-columns: 1fr;
            }

            .brand-intro-block .brand-stats {
                grid-template-columns: 1fr 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .hero-meta {
                flex-direction: column;
                gap: 6px;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .metrics-grid {
                grid-template-columns: 1fr;
            }

            .comparison-table th,
            .comparison-table td {
                padding: 10px 12px;
                font-size: 0.82rem;
            }

            .brand-intro-block .brand-stats {
                grid-template-columns: 1fr;
            }

            .cta-form-card {
                padding: var(--spacing-sm);
            }
        }

/* roulang page: category4 */
:root {
            --primary: #0f1724;
            --primary-deep: #0a101c;
            --secondary: #22c55e;
            --secondary-deep: #16a34a;
            --accent: #f59e0b;
            --accent-warm: #fbbf24;
            --text-primary: #1a2433;
            --text-body: #3d4a5c;
            --text-muted: #7c8a9d;
            --text-inverse: #f4f7fb;
            --bg-body: #f5f7fb;
            --bg-card: #ffffff;
            --bg-dark: #0b1220;
            --bg-section-alt: #eef2f8;
            --border: #dce3ed;
            --border-light: #e8edf5;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 36, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 23, 36, 0.1);
            --shadow-lg: 0 16px 48px rgba(15, 23, 36, 0.16);
            --shadow-glow: 0 6px 28px rgba(34, 197, 94, 0.28);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --spacing-2xs: 6px;
            --spacing-xs: 12px;
            --spacing-sm: 18px;
            --spacing-md: 28px;
            --spacing-lg: 44px;
            --spacing-xl: 64px;
            --spacing-2xl: 84px;
            --max-width: 1180px;
            --nav-height: 72px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.25, 0.8, 0.35, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-body);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--secondary-deep);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--secondary);
        }

        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
            width: 100%;
        }

        /* ============ 导航 ============ */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }

        header.site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.98);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            width: 100%;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary);
            letter-spacing: -0.02em;
        }

        .logo-link .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--secondary), #16a34a);
            border-radius: 10px;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 900;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-body);
            border-radius: 8px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--text-primary);
            background: var(--bg-section-alt);
        }

        .nav-links a.active {
            color: var(--secondary-deep);
            background: rgba(34, 197, 94, 0.1);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.92rem;
            border-radius: 10px;
            white-space: nowrap;
            transition: all var(--transition-base);
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--text-primary);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            background: transparent;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        /* ============ Hero ============ */
        .hero {
            position: relative;
            overflow: hidden;
            background: var(--bg-dark);
            min-height: 540px;
            display: flex;
            align-items: center;
            padding: 60px 0;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 1;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 16, 28, 0.55) 0%, rgba(10, 16, 28, 0.85) 100%);
            z-index: 2;
        }

        .hero .container {
            position: relative;
            z-index: 3;
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .hero-content {
            flex: 1 1 50%;
            min-width: 300px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(34, 197, 94, 0.15);
            color: #86efac;
            border: 1px solid rgba(34, 197, 94, 0.3);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .hero-badge::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--secondary);
            animation: pulse-dot 1.5s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                transform: scale(1);
                opacity: 1;
            }
            50% {
                transform: scale(1.7);
                opacity: 0.5;
            }
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            font-weight: 900;
            color: var(--text-inverse);
            margin: 0 0 18px;
            letter-spacing: -0.03em;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(244, 247, 251, 0.82);
            line-height: 1.75;
            margin: 0 0 28px;
            max-width: 540px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--secondary);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .btn-primary:hover {
            background: var(--secondary-deep);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 34px rgba(22, 163, 74, 0.4);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.7);
            transform: translateY(-2px);
        }

        .hero-visual {
            flex: 1 1 38%;
            min-width: 280px;
            position: relative;
        }

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
            object-fit: cover;
            width: 100%;
        }

        .hero-stat-chip {
            position: absolute;
            bottom: -16px;
            left: -12px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 14px 20px;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hero-stat-chip .chip-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(34, 197, 94, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--secondary-deep);
        }

        .hero-stat-chip strong {
            display: block;
            font-size: 1.3rem;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .hero-stat-chip span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ============ 板块通用 ============ */
        section {
            padding: 56px 0;
        }

        .section-intro {
            margin-bottom: 36px;
        }

        .section-intro .section-tag {
            display: inline-block;
            background: rgba(34, 197, 94, 0.12);
            color: var(--secondary-deep);
            font-weight: 700;
            font-size: 0.82rem;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .section-intro h2 {
            font-size: 1.85rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 10px;
            letter-spacing: -0.02em;
        }

        .section-intro p {
            font-size: 1rem;
            color: var(--text-muted);
            margin: 0;
            max-width: 680px;
        }

        /* ============ 品牌介绍 ============ */
        .brand-intro {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
        }

        .brand-intro-grid {
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }

        .brand-intro-text {
            flex: 1 1 60%;
        }

        .brand-intro-text h2 {
            font-size: 1.85rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 14px;
        }

        .brand-intro-text p {
            font-size: 1.02rem;
            line-height: 1.8;
            color: var(--text-body);
        }

        .brand-intro-image {
            flex: 1 1 30%;
            min-width: 260px;
        }

        .brand-intro-image img {
            border-radius: var(--radius-lg);
            aspect-ratio: 4/3;
            object-fit: cover;
            box-shadow: var(--shadow-md);
        }

        /* ============ 指标看板 ============ */
        .metrics-board {
            background: var(--bg-section-alt);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 18px;
        }

        .metric-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .metric-card .metric-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(34, 197, 94, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--secondary-deep);
            margin-bottom: 14px;
        }

        .metric-card .metric-value {
            font-size: 2.1rem;
            font-weight: 900;
            color: var(--text-primary);
            line-height: 1.1;
            margin-bottom: 4px;
        }

        .metric-card .metric-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-body);
        }

        .metric-card .metric-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ============ 服务矩阵 ============ */
        .services-matrix {
            background: var(--bg-card);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
        }

        .service-card {
            background: var(--bg-body);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            border: 1px solid var(--border);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .service-card:hover {
            border-color: var(--secondary);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .service-card .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--secondary), #16a34a);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 6px;
        }

        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
        }

        .service-card p {
            font-size: 0.92rem;
            color: var(--text-body);
            margin: 0;
            line-height: 1.7;
        }

        .service-card .service-tag {
            display: inline-block;
            align-self: flex-start;
            background: rgba(245, 158, 11, 0.12);
            color: #b45309;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
        }

        /* ============ 结果对比 ============ */
        .comparison {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }

        .comparison .section-intro h2 {
            color: #fff;
        }

        .comparison .section-intro p {
            color: rgba(244, 247, 251, 0.7);
        }

        .comparison-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .comparison-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            transition: all var(--transition-base);
        }

        .comparison-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(34, 197, 94, 0.4);
            transform: translateY(-4px);
        }

        .comparison-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }

        .comparison-card .compare-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.9rem;
        }

        .comparison-card .compare-row:last-child {
            border-bottom: 0;
        }

        .compare-row .compare-label {
            color: rgba(244, 247, 251, 0.7);
        }

        .compare-row .compare-value {
            font-weight: 700;
            color: #fff;
        }

        .compare-value.highlight {
            color: #86efac;
        }

        /* ============ 深度内容区 ============ */
        .deep-content {
            background: var(--bg-card);
        }

        .deep-content-grid {
            display: flex;
            gap: 40px;
            align-items: flex-start;
            flex-wrap: wrap;
        }

        .deep-content-main {
            flex: 1 1 58%;
        }

        .deep-content-main h2 {
            font-size: 1.65rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 16px;
        }

        .deep-content-main p {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 14px;
        }

        .deep-content-side {
            flex: 1 1 34%;
            min-width: 260px;
        }

        .deep-content-side img {
            border-radius: var(--radius-lg);
            aspect-ratio: 3/2;
            object-fit: cover;
            box-shadow: var(--shadow-md);
            margin-bottom: 20px;
        }

        .insight-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .insight-list li {
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }

        .insight-list li:last-child {
            border-bottom: 0;
        }

        .insight-list .insight-num {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            border-radius: 8px;
            background: rgba(34, 197, 94, 0.12);
            color: var(--secondary-deep);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.85rem;
        }

        .insight-list p {
            margin: 0;
            font-size: 0.93rem;
            color: var(--text-body);
            line-height: 1.65;
        }

        /* ============ FAQ ============ */
        .faq {
            background: var(--bg-section-alt);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 22px;
            font-weight: 700;
            color: var(--text-primary);
            font-size: 0.98rem;
            text-align: left;
            background: transparent;
            gap: 12px;
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            border-radius: 50%;
            background: rgba(34, 197, 94, 0.12);
            color: var(--secondary-deep);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }

        .faq-answer p {
            margin: 0;
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.75;
        }

        /* ============ CTA / 表单 ============ */
        .cta-section {
            background: var(--bg-dark);
            padding: 64px 0;
        }

        .cta-grid {
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }

        .cta-text {
            flex: 1 1 45%;
        }

        .cta-text h2 {
            font-size: 2rem;
            font-weight: 900;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: -0.02em;
        }

        .cta-text p {
            color: rgba(244, 247, 251, 0.78);
            font-size: 1.02rem;
            line-height: 1.75;
            margin: 0 0 20px;
        }

        .cta-points {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .cta-points span {
            background: rgba(34, 197, 94, 0.15);
            color: #86efac;
            border: 1px solid rgba(34, 197, 94, 0.28);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        .cta-form-wrap {
            flex: 1 1 45%;
            min-width: 280px;
        }

        .cta-form {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            box-shadow: var(--shadow-lg);
        }

        .cta-form h3 {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 8px;
        }

        .cta-form .form-hint {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0 0 18px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 10px;
            font-size: 0.92rem;
            color: var(--text-primary);
            background: var(--bg-body);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.15);
        }

        .form-submit {
            width: 100%;
            padding: 12px 20px;
            background: var(--secondary);
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: 10px;
            transition: all var(--transition-base);
        }

        .form-submit:hover {
            background: var(--secondary-deep);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(244, 247, 251, 0.75);
            padding: 48px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            margin: 12px 0 0;
            color: rgba(244, 247, 251, 0.6);
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(244, 247, 251, 0.65);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: rgba(244, 247, 251, 0.5);
        }

        .footer-legal {
            display: flex;
            gap: 16px;
        }

        .footer-legal a {
            color: rgba(244, 247, 251, 0.6);
            font-size: 0.8rem;
            transition: color var(--transition-fast);
        }

        .footer-legal a:hover {
            color: var(--secondary);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .cta-text h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
            }
            header.site-header {
                height: var(--nav-height);
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                border-bottom: 1px solid var(--border);
                padding: 16px var(--spacing-sm);
                box-shadow: var(--shadow-md);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 14px;
                font-size: 1rem;
                border-radius: 10px;
            }
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .hero {
                min-height: auto;
                padding: 40px 0;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-visual {
                flex: 1 1 100%;
            }
            .hero-stat-chip {
                bottom: -10px;
                left: 6px;
                padding: 10px 14px;
            }
            section {
                padding: 40px 0;
            }
            .section-intro h2 {
                font-size: 1.5rem;
            }
            .brand-intro-grid {
                gap: 20px;
            }
            .deep-content-grid {
                gap: 24px;
            }
            .cta-grid {
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero-subtitle {
                font-size: 0.92rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn {
                justify-content: center;
                text-align: center;
            }
            .section-intro h2 {
                font-size: 1.3rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

/* roulang page: category6 */
:root {
 --primary: #0f1724;
 --primary-deep: #0a101c;
 --secondary: #22c55e;
 --secondary-deep: #16a34a;
 --accent: #f59e0b;
 --accent-warm: #fbbf24;
 --text-primary: #1a2433;
 --text-body: #3d4a5c;
 --text-muted: #7c8a9d;
 --text-inverse: #f4f7fb;
 --bg-body: #f5f7fb;
 --bg-card: #ffffff;
 --bg-dark: #0b1220;
 --bg-section-alt: #eef2f8;
 --border: #dce3ed;
 --border-light: #e8edf5;
 --radius-sm: 8px;
 --radius-md: 14px;
 --radius-lg: 22px;
 --radius-xl: 30px;
 --shadow-sm: 0 2px 10px rgba(15, 23, 36, 0.06);
 --shadow-md: 0 8px 30px rgba(15, 23, 36, 0.1);
 --shadow-lg: 0 16px 48px rgba(15, 23, 36, 0.16);
 --shadow-glow: 0 6px 28px rgba(34, 197, 94, 0.28);
 --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
 --spacing-2xs: 6px;
 --spacing-xs: 12px;
 --spacing-sm: 18px;
 --spacing-md: 28px;
 --spacing-lg: 44px;
 --spacing-xl: 64px;
 --spacing-2xl: 84px;
 --max-width: 1180px;
 --nav-height: 72px;
 --transition-fast: 0.2s ease;
 --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
 --transition-slow: 0.55s cubic-bezier(0.25, 0.8, 0.35, 1);
 }

 html {
 scroll-behavior: smooth;
 -webkit-text-size-adjust: 100%;
 }

 body {
 font-family: var(--font-sans);
 font-size: 16px;
 line-height: 1.65;
 color: var(--text-body);
 background-color: var(--bg-body);
 -webkit-font-smoothing: antialiased;
 -moz-osx-font-smoothing: grayscale;
 }

 img {
 max-width: 100%;
 height: auto;
 display: block;
 border: 0;
 }

 a {
 color: var(--secondary-deep);
 text-decoration: none;
 transition: color var(--transition-fast);
 }

 a:hover { color: var(--secondary); }

 a:focus-visible {
 outline: 3px solid var(--accent);
 outline-offset: 3px;
 border-radius: 4px;
 }

 button, input, select, textarea {
 font-family: inherit;
 font-size: inherit;
 line-height: inherit;
 }

 button {
 cursor: pointer;
 border: none;
 background: none;
 }

 button:focus-visible {
 outline: 3px solid var(--accent);
 outline-offset: 3px;
 border-radius: 4px;
 }

 .container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-sm); }

 /* ============ 导航 ============ */
 header.site-header {
 position: sticky;
 top: 0;
 z-index: 1000;
 background: rgba(255, 255, 255, 0.92);
 backdrop-filter: blur(16px);
 -webkit-backdrop-filter: blur(16px);
 border-bottom: 1px solid var(--border-light);
 height: var(--nav-height);
 display: flex;
 align-items: center;
 transition: box-shadow var(--transition-base), background var(--transition-base);
 }

 header.site-header.scrolled {
 box-shadow: var(--shadow-md);
 background: rgba(255, 255, 255, 0.98);
 }

 .nav-wrapper {
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: var(--spacing-sm);
 width: 100%;
 }

 .logo-link {
 display: flex;
 align-items: center;
 gap: 10px;
 flex-shrink: 0;
 font-weight: 800;
 font-size: 1.35rem;
 color: var(--primary);
 letter-spacing: -0.02em;
 }

 .logo-link .logo-mark {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 width: 38px;
 height: 38px;
 background: linear-gradient(135deg, var(--secondary), #16a34a);
 border-radius: 10px;
 color: #fff;
 font-size: 0.9rem;
 font-weight: 900;
 flex-shrink: 0;
 }

 .nav-links { display: flex; align-items: center; gap: 4px; }

 .nav-links a {
 display: inline-block;
 padding: 8px 14px;
 font-size: 0.95rem;
 font-weight: 600;
 color: var(--text-body);
 border-radius: 8px;
 transition: all var(--transition-fast);
 position: relative;
 white-space: nowrap;
 }

 .nav-links a:hover {
 color: var(--text-primary);
 background: var(--bg-section-alt);
 }

 .nav-links a.active {
 color: var(--secondary-deep);
 background: rgba(34, 197, 94, 0.1);
 }

 .nav-cta {
 display: inline-flex;
 align-items: center;
 gap: 8px;
 padding: 10px 20px;
 background: var(--secondary);
 color: #fff;
 border-radius: 10px;
 font-weight: 700;
 font-size: 0.92rem;
 transition: all var(--transition-base);
 box-shadow: var(--shadow-glow);
 white-space: nowrap;
 }

 .nav-cta:hover {
 background: var(--secondary-deep);
 color: #fff;
 transform: translateY(-2px);
 box-shadow: 0 10px 30px rgba(34, 197, 94, 0.35);
 }

 .nav-toggle {
 display: none;
 flex-direction: column;
 gap: 5px;
 width: 40px;
 height: 40px;
 background: var(--bg-section-alt);
 border-radius: 8px;
 align-items: center;
 justify-content: center;
 }

 .nav-toggle span {
 display: block;
 width: 20px;
 height: 2px;
 background: var(--text-primary);
 border-radius: 2px;
 transition: all var(--transition-fast);
 }

 .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
 .nav-toggle.active span:nth-child(2) { opacity: 0; }
 .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

 /* ============ Hero ============ */
 .page-hero {
 background: linear-gradient(180deg, #eef4fb 0%, var(--bg-body) 100%);
 padding: var(--spacing-lg) 0 var(--spacing-lg);
 position: relative;
 overflow: hidden;
 border-bottom: 1px solid var(--border-light);
 }

 .page-hero::after {
 content: '';
 position: absolute;
 top: -60%;
 right: -10%;
 width: 500px;
 height: 500px;
 background: radial-gradient(circle, rgba(34, 197, 94, 0.08) 0%, transparent 70%);
 border-radius: 50%;
 pointer-events: none;
 }

 .hero-badge {
 display: inline-flex;
 align-items: center;
 gap: 8px;
 background: rgba(34, 197, 94, 0.08);
 color: var(--secondary-deep);
 padding: 6px 16px;
 border-radius: 50px;
 font-size: 0.85rem;
 font-weight: 700;
 margin-bottom: var(--spacing-sm);
 }

 .page-hero h1 {
 font-size: clamp(1.8rem, 3.5vw, 2.6rem);
 font-weight: 800;
 color: var(--text-primary);
 letter-spacing: -0.03em;
 line-height: 1.25;
 margin-bottom: var(--spacing-sm);
 }

 .page-hero .lead {
 font-size: 1.05rem;
 color: var(--text-body);
 max-width: 680px;
 line-height: 1.7;
 margin-bottom: var(--spacing-sm);
 }

 .hero-meta {
 display: flex;
 flex-wrap: wrap;
 gap: var(--spacing-xs);
 align-items: center;
 }

 .hero-meta .meta-item {
 display: flex;
 align-items: center;
 gap: 6px;
 font-size: 0.9rem;
 color: var(--text-muted);
 background: var(--bg-card);
 padding: 6px 14px;
 border-radius: 50px;
 border: 1px solid var(--border-light);
 }

 .hero-meta .meta-item i { color: var(--secondary); }

 /* ============ Section 通用 ============ */
 section { padding: var(--spacing-xl) 0; }

 .section-title {
 font-size: clamp(1.4rem, 2.5vw, 1.9rem);
 font-weight: 800;
 color: var(--text-primary);
 letter-spacing: -0.02em;
 margin-bottom: var(--spacing-sm);
 }

 .section-desc {
 color: var(--text-body);
 font-size: 1rem;
 line-height: 1.7;
 max-width: 760px;
 }

 .text-gradient {
 background: linear-gradient(135deg, var(--secondary), var(--secondary-deep));
 -webkit-background-clip: text;
 -webkit-text-fill-color: transparent;
 background-clip: text;
 }

 /* ============ 指标看板 ============ */
 .metrics-grid {
 display: grid;
 grid-template-columns: repeat(4, 1fr);
 gap: var(--spacing-sm);
 margin-top: var(--spacing-md);
 }

 .metric-card {
 background: var(--bg-card);
 border: 1px solid var(--border-light);
 border-radius: var(--radius-md);
 padding: var(--spacing-md);
 text-align: center;
 transition: all var(--transition-base);
 }

 .metric-card:hover {
 transform: translateY(-5px);
 box-shadow: var(--shadow-md);
 border-color: rgba(34, 197, 94, 0.3);
 }

 .metric-card .metric-value {
 font-size: 2.2rem;
 font-weight: 800;
 color: var(--text-primary);
 letter-spacing: -0.02em;
 line-height: 1.2;
 }

 .metric-card .metric-label {
 font-size: 0.9rem;
 color: var(--text-muted);
 margin-top: 6px;
 font-weight: 500;
 }

 .metric-card .metric-icon {
 width: 48px;
 height: 48px;
 margin: 0 auto var(--spacing-xs);
 background: rgba(34, 197, 94, 0.1);
 border-radius: 12px;
 display: flex;
 align-items: center;
 justify-content: center;
 color: var(--secondary-deep);
 font-size: 1.2rem;
 }

 /* ============ 服务矩阵 ============ */
 .service-grid {
 display: grid;
 grid-template-columns: repeat(3, 1fr);
 gap: var(--spacing-sm);
 margin-top: var(--spacing-md);
 }

 .service-card {
 background: var(--bg-card);
 border: 1px solid var(--border-light);
 border-radius: var(--radius-lg);
 padding: var(--spacing-md);
 transition: all var(--transition-base);
 position: relative;
 overflow: hidden;
 }

 .service-card::before {
 content: '';
 position: absolute;
 top: 0;
 left: 0;
 right: 0;
 height: 4px;
 background: linear-gradient(90deg, var(--secondary), var(--accent));
 opacity: 0;
 transition: opacity var(--transition-base);
 }

 .service-card:hover::before { opacity: 1; }
 .service-card:hover {
 transform: translateY(-6px);
 box-shadow: var(--shadow-lg);
 }

 .service-card .service-icon {
 width: 52px;
 height: 52px;
 background: var(--bg-section-alt);
 border-radius: 12px;
 display: flex;
 align-items: center;
 justify-content: center;
 margin-bottom: var(--spacing-xs);
 color: var(--secondary-deep);
 font-size: 1.3rem;
 }

 .service-card h3 {
 font-size: 1.1rem;
 font-weight: 700;
 color: var(--text-primary);
 margin-bottom: 8px;
 }

 .service-card p {
 font-size: 0.92rem;
 color: var(--text-muted);
 line-height: 1.6;
 margin-bottom: 0;
 }

 .service-card .service-link {
 display: inline-flex;
 align-items: center;
 gap: 6px;
 margin-top: var(--spacing-xs);
 font-weight: 600;
 font-size: 0.88rem;
 }

 /* ============ 结果对比 ============ */
 .compare-section {
 background: var(--bg-dark);
 border-radius: var(--radius-xl);
 padding: var(--spacing-xl) var(--spacing-lg);
 color: var(--text-inverse);
 position: relative;
 overflow: hidden;
 }

 .compare-section::before {
 content: '';
 position: absolute;
 bottom: -30%;
 left: -10%;
 width: 400px;
 height: 400px;
 background: radial-gradient(circle, rgba(34, 197, 94, 0.15) 0%, transparent 70%);
 border-radius: 50%;
 pointer-events: none;
 }

 .compare-section .section-title { color: #fff; }
 .compare-section .section-desc { color: #a8b3c5; }

 .compare-table-wrap {
 margin-top: var(--spacing-md);
 overflow-x: auto;
 background: rgba(255, 255, 255, 0.04);
 border-radius: var(--radius-md);
 border: 1px solid rgba(255, 255, 255, 0.08);
 }

 .compare-table {
 width: 100%;
 min-width: 640px;
 border-collapse: collapse;
 font-size: 0.92rem;
 }

 .compare-table th {
 background: rgba(255, 255, 255, 0.06);
 color: #a8b3c5;
 font-weight: 600;
 padding: 14px 18px;
 text-align: left;
 }

 .compare-table td {
 padding: 14px 18px;
 border-top: 1px solid rgba(255, 255, 255, 0.06);
 color: #dce3ed;
 font-weight: 400;
 }

 .compare-table td.highlight {
 color: var(--accent-warm);
 font-weight: 700;
 }

 .compare-table tr:hover td { background: rgba(255, 255, 255, 0.03); }

 /* ============ 深度内容 ============ */
 .deep-content {
 background: var(--bg-card);
 border: 1px solid var(--border-light);
 border-radius: var(--radius-lg);
 padding: var(--spacing-lg);
 }

 .deep-content h2 {
 font-size: 1.5rem;
 font-weight: 800;
 color: var(--text-primary);
 margin-bottom: var(--spacing-sm);
 }

 .deep-content p {
 color: var(--text-body);
 line-height: 1.8;
 font-size: 1rem;
 }

 .deep-content blockquote {
 border-left: 4px solid var(--secondary);
 background: rgba(34, 197, 94, 0.05);
 padding: var(--spacing-sm);
 border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
 margin: var(--spacing-sm) 0;
 font-style: italic;
 color: var(--text-primary);
 }

 /* ============ 新闻资讯 ============ */
 .news-grid {
 display: grid;
 grid-template-columns: repeat(3, 1fr);
 gap: var(--spacing-sm);
 margin-top: var(--spacing-md);
 }

 .news-card {
 background: var(--bg-card);
 border: 1px solid var(--border-light);
 border-radius: var(--radius-md);
 overflow: hidden;
 transition: all var(--transition-base);
 cursor: pointer;
 }

 .news-card:hover {
 transform: translateY(-5px);
 box-shadow: var(--shadow-md);
 }

 .news-card .news-img {
 height: 180px;
 overflow: hidden;
 }

 .news-card .news-img img {
 width: 100%;
 height: 100%;
 object-fit: cover;
 transition: transform var(--transition-slow);
 }

 .news-card:hover .news-img img { transform: scale(1.05); }

 .news-card .news-body {
 padding: var(--spacing-sm);
 }

 .news-card .news-date {
 font-size: 0.8rem;
 color: var(--text-muted);
 margin-bottom: 6px;
 display: flex;
 align-items: center;
 gap: 6px;
 }

 .news-card h3 {
 font-size: 1rem;
 font-weight: 700;
 color: var(--text-primary);
 margin-bottom: 6px;
 line-height: 1.4;
 }

 .news-card p {
 font-size: 0.88rem;
 color: var(--text-muted);
 line-height: 1.55;
 margin-bottom: var(--spacing-xs);
 }

 .read-more-btn {
 display: inline-flex;
 align-items: center;
 gap: 6px;
 font-size: 0.88rem;
 font-weight: 600;
 color: var(--secondary-deep);
 }

 .read-more-btn:hover { color: var(--secondary); }

 /* ============ FAQ ============ */
 .faq-list { margin-top: var(--spacing-md); }

 .faq-item {
 background: var(--bg-card);
 border: 1px solid var(--border-light);
 border-radius: var(--radius-md);
 margin-bottom: var(--spacing-xs);
 overflow: hidden;
 transition: all var(--transition-fast);
 }

 .faq-item:hover { border-color: rgba(34, 197, 94, 0.3); }

 .faq-question {
 width: 100%;
 display: flex;
 justify-content: space-between;
 align-items: center;
 padding: var(--spacing-sm) var(--spacing-md);
 font-weight: 700;
 color: var(--text-primary);
 font-size: 0.98rem;
 text-align: left;
 background: transparent;
 }

 .faq-question i { transition: transform var(--transition-base); color: var(--secondary); }

 .faq-item.open .faq-question i { transform: rotate(45deg); }

 .faq-answer {
 max-height: 0;
 overflow: hidden;
 transition: max-height var(--transition-base), padding var(--transition-base);
 padding: 0 var(--spacing-md);
 }

 .faq-item.open .faq-answer {
 max-height: 280px;
 padding: 0 var(--spacing-md) var(--spacing-sm);
 }

 .faq-answer p {
 color: var(--text-body);
 font-size: 0.92rem;
 line-height: 1.7;
 margin-bottom: 0;
 }

 /* ============ CTA 表单 ============ */
 .cta-section {
 background: linear-gradient(135deg, var(--primary-deep), var(--primary));
 border-radius: var(--radius-xl);
 padding: var(--spacing-xl);
 color: var(--text-inverse);
 position: relative;
 overflow: hidden;
 }

 .cta-section::after {
 content: '';
 position: absolute;
 top: -20%;
 right: -5%;
 width: 350px;
 height: 350px;
 background: radial-gradient(circle, rgba(34, 197, 94, 0.2) 0%, transparent 70%);
 border-radius: 50%;
 pointer-events: none;
 }

 .cta-section h2 {
 color: #fff;
 font-size: clamp(1.4rem, 2.5vw, 1.9rem);
 font-weight: 800;
 margin-bottom: var(--spacing-sm);
 }

 .cta-section .cta-desc {
 color: #a8b3c5;
 font-size: 1rem;
 margin-bottom: var(--spacing-md);
 max-width: 560px;
 }

 .cta-form {
 background: rgba(255, 255, 255, 0.06);
 border: 1px solid rgba(255, 255, 255, 0.1);
 border-radius: var(--radius-md);
 padding: var(--spacing-md);
 display: grid;
 grid-template-columns: 1fr 1fr auto;
 gap: var(--spacing-xs);
 align-items: end;
 }

 .cta-form .form-group {
 display: flex;
 flex-direction: column;
 gap: 6px;
 }

 .cta-form label {
 font-size: 0.85rem;
 font-weight: 600;
 color: #a8b3c5;
 }

 .cta-form input, .cta-form select {
 background: rgba(255, 255, 255, 0.95);
 border: 1px solid transparent;
 border-radius: var(--radius-sm);
 padding: 12px 16px;
 color: var(--text-primary);
 font-size: 0.95rem;
 transition: all var(--transition-fast);
 }

 .cta-form input:focus, .cta-form select:focus {
 outline: none;
 border-color: var(--secondary);
 box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.25);
 }

 .cta-submit {
 background: var(--secondary);
 color: #fff;
 padding: 12px 28px;
 border-radius: var(--radius-sm);
 font-weight: 700;
 font-size: 0.95rem;
 transition: all var(--transition-base);
 box-shadow: var(--shadow-glow);
 white-space: nowrap;
 }

 .cta-submit:hover {
 background: var(--secondary-deep);
 transform: translateY(-2px);
 box-shadow: 0 12px 32px rgba(34, 197, 94, 0.4);
 }

 /* ============ 品牌介绍 ============ */
 .brand-section {
 background: var(--bg-section-alt);
 border-radius: var(--radius-lg);
 padding: var(--spacing-lg);
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: var(--spacing-lg);
 align-items: center;
 }

 .brand-section .brand-text h2 {
 font-size: 1.5rem;
 font-weight: 800;
 color: var(--text-primary);
 margin-bottom: var(--spacing-sm);
 }

 .brand-section .brand-text p {
 color: var(--text-body);
 line-height: 1.8;
 font-size: 0.98rem;
 }

 /* ============ Footer ============ */
 footer.site-footer {
 background: var(--bg-dark);
 color: #a8b3c5;
 padding: var(--spacing-xl) 0 var(--spacing-sm);
 }

 .footer-grid {
 display: grid;
 grid-template-columns: 1.8fr 1fr 1fr 1fr;
 gap: var(--spacing-lg);
 margin-bottom: var(--spacing-lg);
 }

 .footer-brand .logo-link { margin-bottom: var(--spacing-xs); }
 .footer-brand p, .footer-col p {
 font-size: 0.9rem;
 line-height: 1.7;
 color: #a8b3c5;
 margin-bottom: 0;
 }

 .footer-col h4 {
 color: #fff;
 font-size: 1rem;
 font-weight: 700;
 margin-bottom: var(--spacing-xs);
 }

 .footer-col ul {
 list-style: none;
 padding: 0;
 margin: 0;
 }

 .footer-col ul li { margin-bottom: 8px; }
 .footer-col ul li a {
 color: #a8b3c5;
 font-size: 0.9rem;
 transition: color var(--transition-fast);
 }

 .footer-col ul li a:hover { color: var(--secondary); }

 .footer-bottom {
 border-top: 1px solid rgba(255, 255, 255, 0.08);
 padding-top: var(--spacing-sm);
 display: flex;
 flex-wrap: wrap;
 gap: var(--spacing-xs) var(--spacing-sm);
 align-items: center;
 justify-content: space-between;
 font-size: 0.82rem;
 color: #7c8a9d;
 }

 .footer-legal { display: flex; gap: var(--spacing-sm); }
 .footer-legal a { color: #7c8a9d; font-size: 0.82rem; }
 .footer-legal a:hover { color: var(--secondary); }

 /* ============ 响应式 ============ */
 @media (max-width: 1024px) {
 .metrics-grid { grid-template-columns: repeat(2, 1fr); }
 .service-grid { grid-template-columns: repeat(2, 1fr); }
 .news-grid { grid-template-columns: repeat(2, 1fr); }
 .footer-grid { grid-template-columns: 1fr 1fr; }
 .brand-section { grid-template-columns: 1fr; gap: var(--spacing-sm); }
 .cta-form { grid-template-columns: 1fr 1fr; }
 .cta-submit { grid-column: span 2; }
 }

 @media (max-width: 768px) {
 :root { --nav-height: 62px; --spacing-xl: 44px; }
 .nav-links {
 position: fixed;
 top: var(--nav-height);
 left: 0;
 right: 0;
 background: #fff;
 flex-direction: column;
 align-items: flex-start;
 padding: var(--spacing-sm);
 gap: 4px;
 border-bottom: 1px solid var(--border-light);
 box-shadow: var(--shadow-md);
 transform: translateY(-10px);
 opacity: 0;
 pointer-events: none;
 transition: all var(--transition-base);
 z-index: 999;
 }
 .nav-links.open {
 transform: translateY(0);
 opacity: 1;
 pointer-events: all;
 }
 .nav-links a { width: 100%; padding: 10px 14px; font-size: 1rem; }
 .nav-cta { display: none; }
 .nav-toggle { display: flex; }
 .metrics-grid { grid-template-columns: 1fr 1fr; }
 .service-grid { grid-template-columns: 1fr; }
 .news-grid { grid-template-columns: 1fr; }
 .compare-section { padding: var(--spacing-md); }
 .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-sm); }
 .footer-bottom { flex-direction: column; text-align: center; }
 .cta-form { grid-template-columns: 1fr; }
 .cta-submit { grid-column: auto; }
 .metric-card .metric-value { font-size: 1.6rem; }
 }

 @media (max-width: 520px) {
 .metrics-grid { grid-template-columns: 1fr; }
 .page-hero h1 { font-size: 1.5rem; }
 .hero-meta { flex-direction: column; align-items: flex-start; }
 .section-title { font-size: 1.3rem; }
 .cta-section, .compare-section { padding: var(--spacing-md); border-radius: var(--radius-lg); }
 .cta-form { padding: var(--spacing-sm); }
 .deep-content { padding: var(--spacing-sm); }
 .brand-section { padding: var(--spacing-sm); }
 }

/* roulang page: category5 */
:root {
            --primary: #0f1724;
            --primary-deep: #0a101c;
            --secondary: #22c55e;
            --secondary-deep: #16a34a;
            --accent: #f59e0b;
            --accent-warm: #fbbf24;
            --text-primary: #1a2433;
            --text-body: #3d4a5c;
            --text-muted: #7c8a9d;
            --text-inverse: #f4f7fb;
            --bg-body: #f5f7fb;
            --bg-card: #ffffff;
            --bg-dark: #0b1220;
            --bg-section-alt: #eef2f8;
            --border: #dce3ed;
            --border-light: #e8edf5;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 36, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 23, 36, 0.1);
            --shadow-lg: 0 16px 48px rgba(15, 23, 36, 0.16);
            --shadow-glow: 0 6px 28px rgba(34, 197, 94, 0.28);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --spacing-2xs: 6px;
            --spacing-xs: 12px;
            --spacing-sm: 18px;
            --spacing-md: 28px;
            --spacing-lg: 44px;
            --spacing-xl: 64px;
            --spacing-2xl: 84px;
            --max-width: 1180px;
            --nav-height: 72px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.25, 0.8, 0.35, 1);
        }
        @media (max-width: 1024px) {
            :root {
                --spacing-xl: 44px;
                --spacing-2xl: 56px;
                --nav-height: 62px;
            }
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-body);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--secondary-deep);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--secondary);
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        /* ============ 导航 ============ */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }
        header.site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.98);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            width: 100%;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .logo-link .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--secondary), #16a34a);
            border-radius: 10px;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 900;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-body);
            border-radius: 8px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--text-primary);
            background: var(--bg-section-alt);
        }
        .nav-links a.active {
            color: var(--secondary-deep);
            background: rgba(34, 197, 94, 0.1);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-deep));
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            border-radius: 10px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow);
        }
        .nav-cta:hover {
            background: linear-gradient(135deg, var(--secondary-deep), #15803d);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(34, 197, 94, 0.38);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 6px;
            background: var(--bg-section-alt);
            transition: background var(--transition-fast);
        }
        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .nav-toggle:hover {
            background: var(--border);
        }

        /* ============ Hero ============ */
        .hero-section {
            background: linear-gradient(145deg, var(--primary-deep) 0%, #111c2f 45%, #16243a 100%);
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            position: relative;
            overflow: hidden;
            min-height: 620px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(34, 197, 94, 0.18) 0%, transparent 68%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: "";
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.12) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-content {
            color: var(--text-inverse);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(34, 197, 94, 0.15);
            border: 1px solid rgba(34, 197, 94, 0.35);
            border-radius: 100px;
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.82rem;
            letter-spacing: 0.04em;
            margin-bottom: var(--spacing-sm);
        }
        .hero-content h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.03em;
            margin-bottom: var(--spacing-sm);
            text-wrap: balance;
        }
        .hero-content h1 .highlight {
            color: var(--secondary);
            position: relative;
        }
        .hero-subtitle {
            font-size: 1.08rem;
            line-height: 1.7;
            color: rgba(244, 247, 251, 0.78);
            margin-bottom: var(--spacing-md);
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 28px;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: 12px;
            transition: all var(--transition-fast);
            text-align: center;
            line-height: 1.4;
            letter-spacing: 0.01em;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-deep));
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--secondary-deep), #15803d);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(34, 197, 94, 0.42);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.45);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-3px);
        }
        .btn-outline-dark {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline-dark:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-warm));
            color: var(--primary-deep);
            font-weight: 800;
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
        }
        .btn-accent:hover {
            background: linear-gradient(135deg, var(--accent-warm), #f59e0b);
            color: var(--primary-deep);
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(245, 158, 11, 0.4);
        }
        .btn-sm {
            padding: 10px 18px;
            font-size: 0.85rem;
            border-radius: 8px;
        }
        .hero-panel {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
        }
        .hero-panel-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: var(--spacing-sm);
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.85rem;
            font-weight: 600;
        }
        .hero-panel-header .live-dot {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--secondary);
            font-size: 0.8rem;
        }
        .hero-panel-header .live-dot::before {
            content: "";
            width: 8px;
            height: 8px;
            background: var(--secondary);
            border-radius: 50%;
            animation: pulse-dot 1.6s infinite ease-in-out;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.5);
            }
        }
        .hero-rank-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .hero-rank-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-fast);
            cursor: default;
        }
        .hero-rank-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(34, 197, 94, 0.35);
            transform: translateX(4px);
        }
        .hero-rank-position {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            font-weight: 800;
            font-size: 0.8rem;
            flex-shrink: 0;
        }
        .hero-rank-position.pos-1 {
            background: rgba(245, 158, 11, 0.3);
            color: var(--accent-warm);
        }
        .hero-rank-position.pos-2 {
            background: rgba(148, 163, 184, 0.25);
            color: #cbd5e1;
        }
        .hero-rank-position.pos-3 {
            background: rgba(180, 83, 9, 0.25);
            color: #ea9453;
        }
        .hero-rank-position.pos-other {
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.6);
        }
        .hero-rank-info {
            flex: 1;
            min-width: 0;
        }
        .hero-rank-name {
            font-weight: 700;
            font-size: 0.9rem;
            color: #fff;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .hero-rank-stat {
            font-size: 0.75rem;
            color: rgba(244, 247, 251, 0.55);
            margin-top: 2px;
        }
        .hero-rank-value {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--secondary);
            flex-shrink: 0;
        }

        /* ============ 指标看板 ============ */
        .metrics-section {
            padding: var(--spacing-xl) 0;
            background: var(--bg-body);
        }
        .section-header {
            margin-bottom: var(--spacing-lg);
        }
        .section-header .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--secondary-deep);
            background: rgba(34, 197, 94, 0.1);
            padding: 4px 12px;
            border-radius: 100px;
            letter-spacing: 0.03em;
            margin-bottom: var(--spacing-xs);
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: var(--spacing-xs);
        }
        .section-header p {
            font-size: 1.02rem;
            color: var(--text-muted);
            max-width: 650px;
            line-height: 1.7;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
        }
        .metric-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .metric-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--secondary), var(--accent));
            opacity: 0;
            transition: opacity var(--transition-fast);
        }
        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--border);
        }
        .metric-card:hover::before {
            opacity: 1;
        }
        .metric-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            font-size: 1.2rem;
            margin-bottom: var(--spacing-xs);
        }
        .metric-icon.icon-green {
            background: rgba(34, 197, 94, 0.12);
            color: var(--secondary-deep);
        }
        .metric-icon.icon-blue {
            background: rgba(59, 130, 246, 0.12);
            color: #3b82f6;
        }
        .metric-icon.icon-orange {
            background: rgba(245, 158, 11, 0.15);
            color: #d97706;
        }
        .metric-icon.icon-purple {
            background: rgba(168, 85, 247, 0.12);
            color: #8b5cf6;
        }
        .metric-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 4px;
        }
        .metric-value {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--text-primary);
            letter-spacing: -0.03em;
            line-height: 1.1;
        }
        .metric-value .unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-muted);
            letter-spacing: 0;
        }
        .metric-change {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.8rem;
            font-weight: 700;
            margin-top: var(--spacing-2xs);
            padding: 2px 8px;
            border-radius: 100px;
        }
        .metric-change.up {
            color: var(--secondary-deep);
            background: rgba(34, 197, 94, 0.1);
        }
        .metric-change.down {
            color: #dc2626;
            background: rgba(220, 38, 38, 0.1);
        }

        /* ============ 服务矩阵 ============ */
        .services-section {
            padding: var(--spacing-xl) 0;
            background: var(--bg-section-alt);
        }
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .service-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            position: relative;
            overflow: hidden;
        }
        .service-card::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: var(--spacing-md);
            right: var(--spacing-md);
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--secondary), transparent);
            opacity: 0;
            transition: opacity var(--transition-fast);
        }
        .service-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: var(--border);
        }
        .service-card:hover::after {
            opacity: 1;
        }
        .service-card .service-icon-large {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        .service-card .service-icon-large.ig-green {
            background: rgba(34, 197, 94, 0.12);
            color: var(--secondary-deep);
        }
        .service-card .service-icon-large.ig-blue {
            background: rgba(59, 130, 246, 0.12);
            color: #3b82f6;
        }
        .service-card .service-icon-large.ig-orange {
            background: rgba(245, 158, 11, 0.15);
            color: #d97706;
        }
        .service-card .service-icon-large.ig-purple {
            background: rgba(168, 85, 247, 0.12);
            color: #8b5cf6;
        }
        .service-card .service-icon-large.ig-red {
            background: rgba(220, 38, 38, 0.12);
            color: #dc2626;
        }
        .service-card .service-icon-large.ig-cyan {
            background: rgba(6, 182, 212, 0.12);
            color: #06b6d4;
        }
        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
            flex: 1;
        }
        .service-card .service-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 0.88rem;
            color: var(--secondary-deep);
        }
        .service-card .service-link i {
            transition: transform var(--transition-fast);
        }
        .service-card .service-link:hover i {
            transform: translateX(5px);
        }
        .service-card .service-tag-list {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-top: 2px;
        }
        .service-card .service-tag {
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 100px;
            background: var(--bg-section-alt);
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }

        /* ============ 结果对比 ============ */
        .comparison-section {
            padding: var(--spacing-xl) 0;
            background: var(--bg-body);
        }
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: start;
        }
        .comparison-content .section-header {
            margin-bottom: var(--spacing-md);
        }
        .comparison-content .comparison-desc {
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text-body);
            margin-bottom: var(--spacing-md);
        }
        .comparison-points {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .comparison-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.6;
        }
        .comparison-points li .check-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(34, 197, 94, 0.12);
            color: var(--secondary-deep);
            font-size: 0.7rem;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .comparison-visual {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-md);
        }
        .comparison-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
        }
        .comparison-visual .visual-caption {
            font-size: 0.85rem;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.5;
        }
        .comparison-visual .visual-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-top: var(--spacing-sm);
        }
        .comparison-visual .visual-stat {
            text-align: center;
            padding: 12px;
            background: var(--bg-section-alt);
            border-radius: 10px;
        }
        .comparison-visual .visual-stat .vs-value {
            font-size: 1.3rem;
            font-weight: 900;
            color: var(--text-primary);
        }
        .comparison-visual .visual-stat .vs-label {
            font-size: 0.72rem;
            color: var(--text-muted);
            font-weight: 600;
            margin-top: 2px;
        }

        /* ============ 品牌介绍 ============ */
        .brand-section {
            padding: var(--spacing-xl) 0;
            background: var(--primary-deep);
            color: var(--text-inverse);
            position: relative;
            overflow: hidden;
        }
        .brand-section::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(34, 197, 94, 0.15) 0%, transparent 65%);
            border-radius: 50%;
        }
        .brand-section::after {
            content: "";
            position: absolute;
            bottom: -30%;
            right: -5%;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.12) 0%, transparent 60%);
            border-radius: 50%;
        }
        .brand-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .brand-content h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-sm);
        }
        .brand-content .brand-text {
            font-size: 1rem;
            line-height: 1.8;
            color: rgba(244, 247, 251, 0.75);
            margin-bottom: var(--spacing-md);
        }
        .brand-badges {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .brand-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            color: rgba(244, 247, 251, 0.85);
        }
        .brand-badge i {
            color: var(--secondary);
            font-size: 0.85rem;
        }

        /* ============ 使用场景 ============ */
        .scenarios-section {
            padding: var(--spacing-xl) 0;
            background: var(--bg-body);
        }
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
        }
        .scenario-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            text-align: left;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--border);
        }
        .scenario-card .scenario-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #1e293b);
            color: #fff;
            font-weight: 800;
            font-size: 0.9rem;
            margin-bottom: var(--spacing-xs);
        }
        .scenario-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .scenario-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ============ 流程 ============ */
        .flow-section {
            padding: var(--spacing-xl) 0;
            background: var(--bg-section-alt);
        }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            position: relative;
        }
        .flow-grid::before {
            content: "";
            position: absolute;
            top: 28px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }
        .flow-step {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .flow-step .flow-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--border);
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-xs);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .flow-step.active .flow-icon {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-deep));
            border-color: var(--secondary-deep);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .flow-step h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .flow-step p {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
            max-width: 200px;
            margin: 0 auto;
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: var(--spacing-xl) 0;
            background: var(--bg-body);
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
            align-items: start;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-md);
        }
        .faq-item details summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-primary);
            list-style: none;
            transition: color var(--transition-fast);
            user-select: none;
        }
        .faq-item details summary::-webkit-details-marker {
            display: none;
        }
        .faq-item details summary .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bg-section-alt);
            color: var(--text-muted);
            font-size: 0.7rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item details[open] summary {
            color: var(--secondary-deep);
        }
        .faq-item details[open] summary .faq-icon {
            background: rgba(34, 197, 94, 0.12);
            color: var(--secondary-deep);
            transform: rotate(180deg);
        }
        .faq-item details .faq-answer {
            padding: 0 20px 18px;
            font-size: 0.88rem;
            color: var(--text-body);
            line-height: 1.7;
        }
        .faq-side {
            background: var(--primary-deep);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            color: var(--text-inverse);
            position: relative;
            overflow: hidden;
        }
        .faq-side::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(34, 197, 94, 0.2) 0%, transparent 60%);
            border-radius: 50%;
        }
        .faq-side h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: var(--spacing-xs);
            position: relative;
            z-index: 1;
        }
        .faq-side p {
            color: rgba(244, 247, 251, 0.7);
            font-size: 0.9rem;
            line-height: 1.65;
            margin-bottom: var(--spacing-md);
            position: relative;
            z-index: 1;
        }
        .faq-side .btn {
            position: relative;
            z-index: 1;
        }

        /* ============ CTA 表单 ============ */
        .cta-section {
            padding: var(--spacing-xl) 0;
            background: linear-gradient(145deg, var(--primary-deep) 0%, #111c2f 50%, #16243a 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -30%;
            left: 50%;
            transform: translateX(-50%);
            width: 700px;
            height: 500px;
            background: radial-gradient(circle, rgba(34, 197, 94, 0.15) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-sm);
        }
        .cta-content p {
            color: rgba(244, 247, 251, 0.75);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
        }
        .cta-benefits {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: var(--spacing-md);
        }
        .cta-benefits span {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(244, 247, 251, 0.85);
            font-size: 0.9rem;
            font-weight: 600;
        }
        .cta-benefits span i {
            color: var(--secondary);
            font-size: 0.8rem;
        }
        .cta-form {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-lg);
        }
        .cta-form h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .cta-form .form-subtitle {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-md);
        }
        .form-group {
            margin-bottom: var(--spacing-sm);
        }
        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            font-size: 0.9rem;
            color: var(--text-primary);
            background: var(--bg-body);
            border: 1.5px solid var(--border);
            border-radius: 10px;
            transition: all var(--transition-fast);
            outline: none;
            appearance: none;
            -webkit-appearance: none;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--secondary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.1);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 80px;
        }
        .cta-form .btn {
            width: 100%;
            margin-top: 4px;
        }
        .form-note {
            font-size: 0.75rem;
            color: var(--text-muted);
            text-align: center;
            margin-top: 10px;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--primary-deep);
            color: var(--text-inverse);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        .footer-brand .logo-link {
            color: #fff;
            margin-bottom: var(--spacing-sm);
            display: inline-flex;
        }
        .footer-brand p {
            color: rgba(244, 247, 251, 0.6);
            font-size: 0.88rem;
            line-height: 1.65;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-xs);
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            color: rgba(244, 247, 251, 0.6);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul a:hover {
            color: var(--secondary);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: var(--spacing-sm);
            padding-top: var(--spacing-sm);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.8rem;
            color: rgba(244, 247, 251, 0.5);
        }
        .footer-bottom span {
            white-space: nowrap;
        }
        .footer-legal {
            display: flex;
            gap: var(--spacing-sm);
            margin-left: auto;
        }
        .footer-legal a {
            color: rgba(244, 247, 251, 0.5);
            font-size: 0.8rem;
            transition: color var(--transition-fast);
        }
        .footer-legal a:hover {
            color: var(--secondary);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-section {
                min-height: auto;
                padding: var(--spacing-xl) 0;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenarios-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }
            .flow-grid::before {
                display: none;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .brand-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
                gap: var(--spacing-md);
            }
            .footer-col:nth-child(4) {
                display: none;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-xl: 32px;
                --spacing-lg: 28px;
                --spacing-md: 20px;
                --nav-height: 60px;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: var(--spacing-sm);
                gap: 4px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                transition: transform var(--transition-base);
                z-index: 999;
                max-height: calc(100vh - var(--nav-height));
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links a {
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: 8px;
                text-align: left;
                width: 100%;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-panel {
                padding: var(--spacing-sm);
            }
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .scenarios-grid {
                grid-template-columns: 1fr;
            }
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .cta-form {
                padding: var(--spacing-md);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .footer-legal {
                margin-left: 0;
            }
            .comparison-visual .visual-stats {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .cta-form {
                padding: var(--spacing-sm);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .btn {
                padding: 12px 20px;
                font-size: 0.85rem;
            }
        }