/* roulang page: index */
:root {
            --primary: #1a56db;
            --primary-dark: #0f3a8f;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --nav-bg: #0d1b2a;
            --nav-line: #2dd4bf;
            --nav-text: #e2e8f0;
            --nav-active: #2dd4bf;
            --body-bg: #f8fafc;
            --card-bg: #ffffff;
            --text-primary: #1e293b;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.06);
            --shadow-glow: 0 0 20px rgba(45, 212, 191, 0.35), 0 0 40px rgba(45, 212, 191, 0.15);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-2xl: 88px;
            --max-width: 1180px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--body-bg);
            overflow-x: hidden;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button, input, textarea, select {
            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: 2px;
            border-radius: 4px;
        }

        ul, ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }

        /* Container */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            background: var(--nav-bg);
            border-bottom: 2px solid rgba(45, 212, 191, 0.3);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.35);
        }
        .site-header::after {
            content: '';
            display: block;
            height: 3px;
            background: linear-gradient(90deg, var(--nav-line), #0ea5e9, #818cf8, var(--nav-line));
            background-size: 300% 100%;
            animation: neonScroll 6s linear infinite;
        }
        @keyframes neonScroll {
            0% { background-position: 0% 0; }
            100% { background-position: 300% 0; }
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            padding-bottom: 14px;
            gap: 24px;
        }
        .nav-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.03em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: opacity var(--transition-fast);
        }
        .nav-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--nav-line), #0ea5e9);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            color: var(--nav-text);
            font-size: 0.93rem;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 6px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(45, 212, 191, 0.15);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--nav-active);
            background: rgba(45, 212, 191, 0.12);
            box-shadow: 0 0 12px rgba(45, 212, 191, 0.25);
            font-weight: 600;
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--nav-line), #0ea5e9);
            color: #0d1b2a !important;
            font-weight: 600;
            padding: 9px 20px !important;
            border-radius: 8px;
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-base) !important;
        }
        .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 28px rgba(45, 212, 191, 0.5);
            color: #0d1b2a !important;
            background: linear-gradient(135deg, #3ee0c8, #38bdf8) !important;
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            border-radius: 6px;
        }
        .nav-toggle span {
            width: 24px;
            height: 2.5px;
            background: var(--nav-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Hero Section */
        .hero {
            background-image: linear-gradient(rgba(13, 27, 42, 0.82), rgba(13, 27, 42, 0.88)), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            padding: var(--space-2xl) 0 var(--space-xl);
            position: relative;
            border-bottom: 3px solid rgba(45, 212, 191, 0.3);
        }
        .hero-content {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: var(--space-lg);
            align-items: center;
        }
        .hero-text h1 {
            color: #ffffff;
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            margin-bottom: var(--space-sm);
            line-height: 1.35;
        }
        .hero-text .hero-sub {
            color: rgba(226, 232, 240, 0.92);
            font-size: 1.02rem;
            line-height: 1.8;
            margin-bottom: var(--space-md);
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 26px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            text-decoration: none;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: linear-gradient(135deg, #2dd4bf, #0ea5e9);
            color: #0d1b2a;
            box-shadow: 0 4px 16px rgba(45, 212, 191, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(45, 212, 191, 0.5);
            text-decoration: none;
            color: #0d1b2a;
        }
        .btn-outline-light {
            background: transparent;
            color: #e2e8f0;
            border-color: rgba(226, 232, 240, 0.4);
        }
        .btn-outline-light:hover {
            background: rgba(226, 232, 240, 0.1);
            border-color: #e2e8f0;
            text-decoration: none;
            color: #fff;
        }
        .btn-primary-dark {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.3);
        }
        .btn-primary-dark:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 86, 219, 0.4);
            text-decoration: none;
        }
        .hero-demo {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-lg);
            padding: var(--space-md);
            box-shadow: var(--shadow-lg);
        }
        .hero-demo img {
            border-radius: var(--radius-md);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .hero-demo .demo-caption {
            color: #e2e8f0;
            font-size: 0.85rem;
            margin-top: var(--space-xs);
            text-align: center;
            letter-spacing: 0.02em;
        }
        .hero-stats {
            display: flex;
            gap: var(--space-md);
            flex-wrap: wrap;
            margin-top: var(--space-sm);
        }
        .hero-stat {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            padding: 10px 18px;
            color: #fff;
            font-size: 0.85rem;
        }
        .hero-stat strong {
            font-size: 1.2rem;
            display: block;
            color: #2dd4bf;
        }

        /* Common section styles */
        .section {
            padding: var(--space-xl) 0;
        }
        .section-alt {
            background: #f1f5f9;
        }
        .section-header {
            margin-bottom: var(--space-lg);
        }
        .section-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: var(--space-xs);
        }
        .section-header h2 {
            font-size: 1.7rem;
            font-weight: 700;
            letter-spacing: 0.01em;
            margin-bottom: var(--space-xs);
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 0.98rem;
            max-width: 640px;
            line-height: 1.8;
        }

        /* Vertical cards (竖屏种草) */
        .v-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: var(--space-md);
        }
        .v-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .v-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .v-card img {
            aspect-ratio: 3/4;
            object-fit: cover;
            width: 100%;
        }
        .v-card-body {
            padding: var(--space-sm);
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .v-card-body h3 {
            font-size: 0.98rem;
            font-weight: 600;
            line-height: 1.4;
        }
        .v-card-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.55;
            flex-grow: 1;
        }
        .v-card-tag {
            display: inline-flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .v-card-tag span {
            font-size: 0.72rem;
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 8px;
            border-radius: 12px;
            font-weight: 500;
        }

        /* Hot list (爆款清单) */
        .hot-list-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: start;
        }
        .hot-list {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }
        .hot-item {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition-fast);
        }
        .hot-item:last-child {
            border-bottom: none;
        }
        .hot-item:hover {
            background: #f8fafc;
        }
        .hot-rank {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .hot-rank.top1 {
            background: var(--accent);
            color: #fff;
        }
        .hot-rank.top2 {
            background: #94a3b8;
            color: #fff;
        }
        .hot-rank.top3 {
            background: #b45309;
            color: #fff;
        }
        .hot-info h3 {
            font-size: 0.93rem;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .hot-info p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .hot-meta {
            margin-left: auto;
            text-align: right;
            flex-shrink: 0;
        }
        .hot-meta .rating {
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--accent);
        }
        .hot-meta .count {
            font-size: 0.74rem;
            color: var(--text-muted);
        }
        .hot-side {
            background: linear-gradient(135deg, #0d1b2a, #1a365d);
            border-radius: var(--radius-lg);
            padding: var(--space-md);
            color: #e2e8f0;
            box-shadow: var(--shadow-lg);
        }
        .hot-side h3 {
            color: #fff;
            font-size: 1.05rem;
            margin-bottom: var(--space-xs);
        }
        .hot-side p {
            font-size: 0.88rem;
            color: rgba(226, 232, 240, 0.85);
            line-height: 1.7;
            margin-bottom: var(--space-sm);
        }
        .hot-side .btn {
            margin-top: var(--space-xs);
        }

        /* Review wall (评价墙) */
        .review-summary {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: var(--space-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            margin-bottom: var(--space-md);
            flex-wrap: wrap;
        }
        .review-score {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
        }
        .review-score-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .review-stars {
            color: #f59e0b;
            font-size: 1.1rem;
            letter-spacing: 2px;
        }
        .review-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: var(--space-md);
        }
        .review-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }
        .review-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .review-card .reviewer {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: var(--space-xs);
        }
        .review-card .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
            flex-shrink: 0;
        }
        .review-card .name {
            font-weight: 600;
            font-size: 0.9rem;
        }
        .review-card .date {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .review-card .review-stars {
            font-size: 0.88rem;
            margin-bottom: 6px;
        }
        .review-card .review-text {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* News section (资讯) */
        .news-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: var(--space-lg);
            align-items: start;
        }
        .news-list {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .news-list-item {
            display: flex;
            align-items: baseline;
            gap: var(--space-sm);
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition-fast);
        }
        .news-list-item:last-child {
            border-bottom: none;
        }
        .news-list-item:hover {
            background: #f8fafc;
        }
        .news-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            white-space: nowrap;
            flex-shrink: 0;
            font-weight: 500;
        }
        .news-list-item a {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-primary);
            line-height: 1.5;
        }
        .news-list-item a:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .news-side {
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
        }
        .news-side-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: var(--space-sm);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            display: flex;
            gap: var(--space-sm);
            align-items: center;
        }
        .news-side-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .news-side-card img {
            width: 80px;
            height: 60px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .news-side-card h4 {
            font-size: 0.88rem;
            font-weight: 600;
            line-height: 1.4;
        }
        .news-side-card p {
            font-size: 0.76rem;
            color: var(--text-muted);
        }

        /* Lead form (线索表单) */
        .lead-form-section {
            background: linear-gradient(135deg, #eff6ff, #f0fdf4);
            border-radius: var(--radius-xl);
            padding: var(--space-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(26, 86, 219, 0.12);
        }
        .lead-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
        }
        .lead-form-info h2 {
            font-size: 1.5rem;
            margin-bottom: var(--space-xs);
        }
        .lead-form-info p {
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.8;
        }
        .lead-form {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .form-group {
            margin-bottom: var(--space-sm);
        }
        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-primary);
        }
        .form-group input {
            width: 100%;
            padding: 11px 14px;
            border: 2px solid var(--border-light);
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            color: var(--text-primary);
            background: #fafbfc;
            transition: border var(--transition-fast), box-shadow var(--transition-fast);
        }
        .form-group input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.12);
        }
        .form-privacy {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin: var(--space-xs) 0 var(--space-sm);
            line-height: 1.6;
        }
        .form-privacy a {
            color: var(--primary);
        }
        .form-submit {
            width: 100%;
            padding: 13px 26px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
        }
        .form-submit:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(26, 86, 219, 0.3);
        }

        /* FAQ */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            margin-bottom: var(--space-xs);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            padding: 16px 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: color var(--transition-fast);
            width: 100%;
            text-align: left;
            background: none;
            border: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 1.1rem;
            transition: transform var(--transition-fast);
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 20px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 16px;
        }

        /* CTA Section (加购引导) */
        .cta-section {
            background: linear-gradient(135deg, #0d1b2a, #1a365d);
            border-radius: var(--radius-xl);
            padding: var(--space-lg);
            color: #e2e8f0;
            text-align: center;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(45, 212, 191, 0.2);
        }
        .cta-section h2 {
            color: #fff;
            font-size: 1.6rem;
            margin-bottom: var(--space-xs);
        }
        .cta-section p {
            color: rgba(226, 232, 240, 0.85);
            max-width: 560px;
            margin: 0 auto var(--space-md);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .btn-accent {
            background: var(--accent);
            color: #1e293b;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
        }
        .btn-accent:hover {
            background: #d97706;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.45);
            text-decoration: none;
        }

        /* Footer */
        .site-footer {
            background: var(--nav-bg);
            color: var(--nav-text);
            padding: var(--space-lg) 0 var(--space-md);
            border-top: 3px solid rgba(45, 212, 191, 0.3);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }
        .footer-brand h2 {
            color: #fff;
            font-size: 1.15rem;
            margin-bottom: var(--space-xs);
            letter-spacing: 0.02em;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: rgba(226, 232, 240, 0.7);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h3 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: var(--space-xs);
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col a {
            color: rgba(226, 232, 240, 0.72);
            font-size: 0.84rem;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #2dd4bf;
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(226, 232, 240, 0.15);
            padding-top: var(--space-md);
            text-align: center;
            font-size: 0.78rem;
            color: rgba(226, 232, 240, 0.55);
            letter-spacing: 0.02em;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .hero-demo {
                max-width: 480px;
            }
            .hot-list-wrap {
                grid-template-columns: 1fr;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .lead-form-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero {
                padding: var(--space-lg) 0;
            }
            .hero-text h1 {
                font-size: 1.6rem;
            }
            .hero-text .hero-sub {
                font-size: 0.92rem;
            }
            .section {
                padding: var(--space-lg) 0;
            }
            .section-header h2 {
                font-size: 1.35rem;
            }
            .v-card-grid {
                grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
                gap: var(--space-sm);
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .nav-wrapper {
                flex-wrap: wrap;
            }
            .nav-links {
                order: 3;
                width: 100%;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 4px;
            }
            .nav-links a {
                font-size: 0.85rem;
                padding: 6px 12px;
            }
        }

        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 1.35rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn {
                width: 100%;
                padding: 11px 20px;
                font-size: 0.9rem;
            }
            .hero-stats {
                gap: 8px;
            }
            .hero-stat {
                padding: 8px 14px;
                font-size: 0.78rem;
            }
            .hero-stat strong {
                font-size: 1rem;
            }
            .v-card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .v-card-body h3 {
                font-size: 0.88rem;
            }
            .v-card-body p {
                font-size: 0.78rem;
            }
            .hot-item {
                padding: 10px 14px;
                flex-wrap: wrap;
            }
            .hot-meta {
                margin-left: 0;
                text-align: left;
                width: 100%;
                padding-left: 48px;
            }
            .news-list-item {
                flex-direction: column;
                gap: 2px;
                padding: 12px 16px;
            }
            .news-side-card {
                flex-direction: column;
                text-align: center;
            }
            .news-side-card img {
                width: 100%;
                height: auto;
                aspect-ratio: 16/9;
            }
            .cta-section {
                padding: var(--space-md);
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .faq-question {
                font-size: 0.88rem;
                padding: 13px 16px;
            }
            .lead-form-section {
                padding: var(--space-md);
                border-radius: var(--radius-lg);
            }
            .lead-form {
                padding: var(--space-sm);
            }
        }