/* roulang page: index */
:root {
            --primary: #1E6BFF;
            --primary-dark: #1653CC;
            --primary-light: #EFF4FF;
            --accent: #F5B945;
            --accent-dark: #dda32e;
            --text: #1F2937;
            --text-secondary: #64748B;
            --bg-light: #F6F8FC;
            --bg-white: #FFFFFF;
            --bg-dark: #0F172A;
            --border: #E2E8F0;
            --success: #0FA37F;
            --error: #E11D48;
            --radius-card: 16px;
            --radius-input: 10px;
            --radius-full: 999px;
            --shadow-card: 0 8px 24px rgba(30, 107, 255, 0.08);
            --shadow-card-hover: 0 14px 32px rgba(30, 107, 255, 0.14);
            --shadow-nav: 0 4px 24px rgba(15, 23, 42, 0.06);
            --space-section: 96px;
            --space-section-mobile: 48px;
            --container: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }

        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        .section {
            padding: 96px 0;
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
            letter-spacing: -0.02em;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-top: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 16px;
            line-height: 1;
            transition: all .25s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(30, 107, 255, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(30, 107, 255, 0.32);
        }

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

        .btn-secondary:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }

        .btn-accent {
            background: var(--accent);
            color: #111;
        }

        .btn-accent:hover {
            filter: brightness(1.05);
            transform: translateY(-1px);
        }

        .btn:focus-visible {
            outline: 2px solid rgba(30, 107, 255, 0.3);
            outline-offset: 2px;
        }

        /* ===== Header Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.65);
            transition: all .3s ease;
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.92);
            box-shadow: var(--shadow-nav);
            border-bottom-color: rgba(226, 232, 240, 0.7);
        }

        .site-header .nav-inner {
            max-width: 1200px;
            margin: 0 auto;
            height: 72px;
            padding: 0 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: height .3s ease;
        }

        .site-header.scrolled .nav-inner {
            height: 64px;
        }

        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            font-size: 20px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-links a {
            font-size: 16px;
            color: #1E293B;
            font-weight: 500;
            position: relative;
            padding: 4px 0;
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 700;
        }

        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #334155;
            font-size: 16px;
            transition: all .2s ease;
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.6);
        }

        .search-btn:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: var(--primary-light);
        }

        .hamburger-btn {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #1E293B;
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.6);
        }

        .mobile-menu {
            display: none;
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 16px 40px rgba(15, 23, 42, 0.1);
            padding: 12px;
            margin: 0 16px 16px;
            border: 1px solid var(--border);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 0 16px;
            height: 48px;
            line-height: 48px;
            font-size: 16px;
            color: #1E293B;
            border-radius: 10px;
            font-weight: 500;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 680px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 16px 80px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.92) 0%, rgba(240, 246, 255, 0.85) 50%, rgba(255, 255, 255, 0.9) 100%);
        }

        .hero-grid-overlay {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(30, 107, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(30, 107, 255, 0.03) 1px, transparent 1px);
            background-size: 60px 60px;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(30, 107, 255, 0.08);
            border: 1px solid rgba(30, 107, 255, 0.2);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: 999px;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--text);
            margin-bottom: 20px;
        }

        .hero .subtitle {
            font-size: 18px;
            line-height: 1.75;
            color: #4B5563;
            max-width: 620px;
            margin: 0 auto 36px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 56px;
            flex-wrap: wrap;
        }

        .hero-stats .stat-item {
            text-align: center;
        }

        .hero-stats .stat-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }

        .hero-stats .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* ===== Features ===== */
        .features-section {
            background: var(--bg-white);
            padding: 96px 0;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 32px;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
        }

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

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            background: var(--primary-light);
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .feature-link {
            font-size: 14px;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .2s;
        }

        .feature-link:hover {
            gap: 10px;
        }

        /* ===== Scenarios ===== */
        .scenarios-section {
            background: var(--bg-light);
            padding: 96px 0;
        }

        .scenario-block {
            display: flex;
            align-items: center;
            gap: 64px;
            padding: 48px 0;
        }

        .scenario-block.flip {
            flex-direction: row-reverse;
        }

        .scenario-img {
            flex: 1;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .scenario-img img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: 16px;
            transition: transform .5s ease;
        }

        .scenario-img:hover img {
            transform: scale(1.03);
        }

        .scenario-text {
            flex: 1;
        }

        .scenario-text .step-tag {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 14px;
            border-radius: 999px;
            display: inline-block;
            margin-bottom: 16px;
        }

        .scenario-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .scenario-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .text-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .text-link:hover {
            gap: 10px;
        }

        /* ===== News ===== */
        .news-section {
            background: var(--bg-white);
            padding: 96px 0;
        }

        .news-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 40px;
        }

        .news-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(30, 107, 255, 0.25);
        }

        .news-card .card-cover {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: #f1f5f9;
        }

        .news-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .news-card:hover .card-cover img {
            transform: scale(1.04);
        }

        .news-card .card-body {
            padding: 20px 20px 16px;
        }

        .news-card .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 10px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .news-card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 54px;
        }

        .news-card .card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }

        .news-card .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid #f1f5f9;
            padding-top: 12px;
            font-size: 13px;
            color: #94A3B8;
        }

        .news-card .card-meta .read-more {
            color: var(--primary);
            font-weight: 600;
        }

        .empty-state {
            grid-column: 1 / -1;
            border: 2px dashed var(--border);
            border-radius: 16px;
            padding: 56px 24px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 14px;
            background: var(--bg-light);
        }

        .empty-state i {
            font-size: 32px;
            display: block;
            margin-bottom: 12px;
            color: #CBD5E1;
        }

        /* ===== Cases ===== */
        .cases-section {
            background: var(--bg-light);
            padding: 96px 0;
        }

        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .case-card {
            background: #fff;
            border-radius: 16px;
            padding: 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            position: relative;
        }

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

        .case-card.wide {
            grid-column: 1 / -1;
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .case-card .case-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 16px;
        }

        .case-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .case-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .case-card .case-metrics {
            display: flex;
            gap: 24px;
            margin-top: 20px;
        }

        .case-card .metric {
            text-align: center;
        }

        .case-card .metric .num {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }

        .case-card .metric .label {
            font-size: 12px;
            color: #94A3B8;
        }

        .case-card.wide .case-icon {
            width: 64px;
            height: 64px;
            font-size: 24px;
            flex-shrink: 0;
            margin-bottom: 0;
        }

        /* ===== Pricing ===== */
        .pricing-section {
            background: var(--bg-white);
            padding: 96px 0;
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }

        .pricing-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 40px 32px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
            position: relative;
        }

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

        .pricing-card.featured {
            border: 1px solid var(--accent);
            box-shadow: 0 12px 36px rgba(245, 185, 69, 0.16);
            transform: scale(1.03);
        }

        .pricing-card.featured:hover {
            transform: scale(1.03) translateY(-4px);
        }

        .pricing-card .badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #111;
            font-size: 13px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .pricing-card .plan-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .pricing-card .price {
            font-size: 48px;
            font-weight: 800;
            color: var(--text);
            line-height: 1;
            margin-bottom: 4px;
        }

        .pricing-card .price span {
            font-size: 16px;
            font-weight: 400;
            color: var(--text-secondary);
        }

        .pricing-card .price-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .pricing-card .features-list {
            list-style: none;
            text-align: left;
            margin-bottom: 28px;
            flex-grow: 1;
        }

        .pricing-card .features-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 15px;
            color: #475569;
            padding: 6px 0;
        }

        .pricing-card .features-list li i {
            color: var(--success);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .pricing-card .btn {
            width: 100%;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-light);
            padding: 96px 0;
        }

        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: all .3s ease;
        }

        .faq-item.active {
            border-left: 4px solid var(--primary);
            background: #F8FAFF;
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            user-select: none;
        }

        .faq-question .icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-secondary);
            transition: all .3s ease;
            flex-shrink: 0;
        }

        .faq-item.active .faq-question .icon {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: #62748C;
            line-height: 1.8;
            padding-top: 12px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(245, 185, 69, 0.08) 0%, transparent 60%);
        }

        .cta-content {
            position: relative;
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 32px;
            font-weight: 700;
            color: #F1F5F9;
            margin-bottom: 16px;
        }

        .cta-content p {
            font-size: 16px;
            color: #94A3B8;
            margin-bottom: 32px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 80px 0 0;
            color: #94A3B8;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(148, 163, 184, 0.1);
        }

        .footer-brand .logo {
            color: var(--primary);
            margin-bottom: 16px;
            display: block;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 16px;
        }

        .footer-col a,
        .footer-col p {
            display: block;
            font-size: 14px;
            color: #94A3B8;
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .footer-col a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: #64748B;
            flex-wrap: wrap;
            gap: 12px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 20px;
            }

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

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

            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }

            .pricing-card.featured {
                transform: scale(1);
            }

            .pricing-card.featured:hover {
                transform: translateY(-4px);
            }

            .scenario-block {
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }

            .nav-links {
                display: none;
            }

            .nav-actions .search-btn {
                display: none;
            }

            .nav-actions .btn {
                display: none;
            }

            .hamburger-btn {
                display: flex;
            }

            .hero {
                min-height: 600px;
                padding: 100px 16px 60px;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero .subtitle {
                font-size: 16px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }

            .hero-stats {
                gap: 20px;
                margin-top: 40px;
            }

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

            .scenario-block {
                flex-direction: column !important;
                padding: 24px 0;
            }

            .scenario-img img {
                height: 220px;
            }

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

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

            .case-card.wide {
                flex-direction: column;
                gap: 16px;
                grid-column: auto;
                text-align: center;
            }

            .case-card.wide .case-icon {
                margin: 0 auto 0;
            }

            .case-card.wide .case-metrics {
                justify-content: center;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }

            .news-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
        }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .pricing-card {
                padding: 32px 20px;
            }

            .pricing-card .price {
                font-size: 36px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1E6BFF;
            --primary-hover: #1653CC;
            --accent: #F5B945;
            --accent-hover: #f7c65e;
            --text-main: #1F2937;
            --text-secondary: #64748B;
            --text-light: #94A3B8;
            --bg-light: #F6F8FC;
            --bg-card: #FFFFFF;
            --bg-dark: #0F172A;
            --border-light: #E2E8F0;
            --border-input: #CBD5E1;
            --radius-card: 16px;
            --radius-input: 10px;
            --shadow-card: 0 8px 24px rgba(30, 107, 255, 0.08);
            --shadow-card-hover: 0 14px 32px rgba(30, 107, 255, 0.14);
            --header-height: 72px;
            --container-width: 1200px;
            --section-padding: 96px;
            --section-padding-mobile: 48px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background: #fff;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-padding) 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-padding-mobile) 0;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.65);
            transition: all 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.92);
            box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            height: 64px;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .logo i {
            font-size: 26px;
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            gap: 32px;
            align-items: center;
        }
        .nav-links a {
            color: #1E293B;
            font-size: 16px;
            font-weight: 500;
            transition: color 0.2s;
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 700;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: none;
            color: var(--text-main);
            cursor: pointer;
            font-size: 16px;
            transition: all 0.2s;
        }
        .search-btn:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.2s ease;
            cursor: pointer;
            text-decoration: none;
            border: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(30, 107, 255, 0.3);
        }
        .btn-secondary {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-secondary:hover {
            background: #F0F6FF;
        }
        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid var(--border-light);
            cursor: pointer;
            font-size: 18px;
            color: var(--text-main);
        }
        .menu-toggle:hover {
            background: var(--bg-light);
        }
        .mobile-menu {
            position: fixed;
            top: calc(var(--header-height) + 8px);
            left: 16px;
            right: 16px;
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 14px 32px rgba(15, 23, 42, 0.12);
            padding: 12px;
            display: none;
            z-index: 999;
            border: 1px solid var(--border-light);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: flex;
            align-items: center;
            height: 48px;
            padding: 0 16px;
            border-radius: 10px;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 500;
        }
        .mobile-menu a:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 700;
            background: #F0F6FF;
        }
        @media (max-width: 768px) {
            .nav-links,
            .header-actions .btn {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            height: 360px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            background-color: var(--bg-light);
        }
        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            z-index: 1;
        }
        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(246, 248, 252, 0.78) 100%);
            z-index: 2;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 3;
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 2px;
        }
        .category-hero p {
            font-size: 18px;
            color: #4B5563;
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }
        @media (max-width: 768px) {
            .category-hero {
                height: 300px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero p {
                font-size: 16px;
                padding: 0 16px;
            }
        }

        /* ===== Section Headers ===== */
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
        }
        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 24px;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== Feature Cards ===== */
        .feature-cards {
            background: #fff;
        }
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary);
        }
        .feature-card img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }
        .feature-card .card-body {
            padding: 24px;
        }
        .feature-card .card-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .feature-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .feature-card .card-body a {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.2s;
        }
        .feature-card .card-body a:hover {
            gap: 8px;
        }
        @media (max-width: 768px) {
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== Point List ===== */
        .point-list-section {
            background: var(--bg-light);
        }
        .point-list {
            max-width: 880px;
            margin: 0 auto;
        }
        .point-list-item {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            padding: 32px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .point-list-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .point-list-item:first-child {
            padding-top: 0;
        }
        .point-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            letter-spacing: 0.5px;
        }
        .point-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .point-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        @media (max-width: 768px) {
            .point-list-item {
                gap: 16px;
                padding: 24px 0;
            }
            .point-num {
                width: 40px;
                height: 40px;
                font-size: 13px;
            }
            .point-content h3 {
                font-size: 18px;
            }
        }

        /* ===== CTA ===== */
        .cta-area {
            background: var(--bg-dark);
            text-align: center;
            padding: 80px 0;
        }
        .cta-area h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-area p {
            color: var(--text-light);
            font-size: 16px;
            margin-bottom: 32px;
        }
        .btn-gold {
            background: var(--accent);
            color: var(--bg-dark);
            font-size: 16px;
            padding: 14px 36px;
        }
        .btn-gold:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(245, 185, 69, 0.4);
        }
        @media (max-width: 768px) {
            .cta-area {
                padding: 56px 24px;
            }
            .cta-area h2 {
                font-size: 24px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: #CBD5E1;
            padding: 64px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-light);
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-col p {
            font-size: 14px;
            color: var(--text-light);
            padding: 4px 0;
            line-height: 1.8;
        }
        .footer-col p i {
            margin-right: 4px;
            color: var(--text-secondary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .footer-bottom a {
            color: var(--text-secondary);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1E6BFF;
            --primary-hover: #1653CC;
            --accent: #F5B945;
            --text: #1F2937;
            --text-secondary: #64748B;
            --bg-light: #F6F8FC;
            --card-bg: #FFFFFF;
            --dark-bg: #0F172A;
            --border: #E2E8F0;
            --success: #0FA37F;
            --error: #E11D48;
            --radius-card: 16px;
            --radius-input: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(30, 107, 255, 0.08);
            --shadow-card-hover: 0 14px 32px rgba(30, 107, 255, 0.14);
            --shadow-nav: 0 4px 24px rgba(15, 23, 42, 0.06);
            --container: 1200px;
            --space-section: 96px;
            --space-section-mobile: 48px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: #fff;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            border: none;
            background: none;
            font: inherit;
            cursor: pointer;
        }
        input,
        select {
            font: inherit;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.65);
            transition: background 0.3s ease, box-shadow 0.3s ease, height 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.92);
            height: 64px;
            box-shadow: var(--shadow-nav);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo i {
            font-size: 24px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            font-size: 16px;
            font-weight: 500;
            color: #1E293B;
            line-height: 1.4;
            position: relative;
            padding: 4px 0;
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #334155;
            background: rgba(255, 255, 255, 0.6);
            border: 1px solid rgba(224, 231, 238, 0.8);
            transition: background 0.25s, color 0.25s, border-color 0.25s;
        }
        .search-btn:hover {
            background: #fff;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            border-radius: var(--radius-pill);
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 600;
            transition: background 0.25s, color 0.25s, box-shadow 0.25s, transform 0.2s, border-color 0.25s;
            line-height: 1.5;
            text-align: center;
            outline: none;
        }
        .btn:focus-visible {
            ring: 2px solid rgba(30, 107, 255, 0.3);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(30, 107, 255, 0.28);
        }
        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            background: #F0F6FF;
            color: var(--primary);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }
        .btn-gold {
            background: var(--accent);
            color: #1F2937;
        }
        .btn-gold:hover {
            filter: brightness(1.05);
            transform: translateY(-1px);
        }
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            background: #fff;
            border: 1px solid var(--border);
            color: #1E293B;
            font-size: 18px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 16px;
            right: 16px;
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 20px 50px rgba(15, 23, 42, 0.18);
            padding: 16px;
            z-index: 99;
            flex-direction: column;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            height: 48px;
            display: flex;
            align-items: center;
            padding: 0 14px;
            border-radius: 10px;
            font-size: 16px;
            color: #1E293B;
            font-weight: 500;
        }
        .mobile-menu a:hover {
            background: #F0F6FF;
            color: var(--primary);
        }
        .mobile-menu a.active {
            background: #F0F6FF;
            color: var(--primary);
            font-weight: 700;
        }
        .category-hero {
            padding: 140px 0 72px;
            background: linear-gradient(180deg, #EDF2FF 0%, #F6F8FC 60%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            top: 40px;
            right: -80px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(30, 107, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .category-hero::after {
            content: "";
            position: absolute;
            bottom: 20px;
            left: -60px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(245, 185, 69, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }
        .hero-content {
            text-align: center;
            max-width: 780px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }
        .hero-content .badge {
            display: inline-block;
            background: rgba(30, 107, 255, 0.1);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .hero-content h1 {
            font-size: 44px;
            font-weight: 700;
            color: #0F172A;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .hero-content .hero-sub {
            font-size: 18px;
            color: #4B5563;
            line-height: 1.8;
            margin-bottom: 40px;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(226, 232, 240, 0.9);
            border-radius: 20px;
            padding: 28px 20px;
            box-shadow: 0 8px 30px rgba(30, 107, 255, 0.07);
            backdrop-filter: blur(4px);
        }
        .stat-item {
            text-align: center;
            padding: 8px 4px;
        }
        .stat-number {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .content-section {
            padding: 96px 0;
        }
        .content-section.alt-bg {
            background: var(--bg-light);
        }
        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: #0F172A;
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .table-wrapper {
            max-width: 1000px;
            margin: 0 auto;
            border-radius: 16px;
            overflow-x: auto;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            background: #fff;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
            min-width: 640px;
        }
        .compare-table thead th {
            background: #F0F6FF;
            color: #0F172A;
            font-weight: 700;
            font-size: 15px;
            padding: 18px 24px;
            text-align: left;
            border-bottom: 2px solid #DFE9F7;
            white-space: nowrap;
        }
        .compare-table thead th:first-child {
            border-top-left-radius: 16px;
        }
        .compare-table thead th:last-child {
            border-top-right-radius: 16px;
        }
        .compare-table tbody td {
            padding: 18px 24px;
            border-bottom: 1px solid #eef2f7;
            color: var(--text);
            line-height: 1.7;
            vertical-align: top;
        }
        .compare-table tbody tr:nth-child(even) {
            background: #F8FAFC;
        }
        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }
        .compare-table tbody tr:hover {
            background: #F0F6FF;
        }
        .compare-table td:first-child {
            font-weight: 600;
            color: #0F172A;
            white-space: nowrap;
        }
        .table-tag {
            display: inline-block;
            background: rgba(15, 163, 127, 0.1);
            color: var(--success);
            font-size: 13px;
            padding: 2px 10px;
            border-radius: 999px;
            margin-left: 8px;
            font-weight: 500;
        }
        .read-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            max-width: 1000px;
            margin: 0 auto;
        }
        .read-card {
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .read-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(30, 107, 255, 0.4);
        }
        .read-cover {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #e3e9f2;
        }
        .read-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .read-card:hover .read-cover img {
            transform: scale(1.03);
        }
        .read-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .read-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: #0F172A;
            margin-bottom: 8px;
        }
        .read-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .read-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.25s ease;
        }
        .read-link:hover {
            gap: 10px;
        }
        .cta-section {
            padding: 48px 0 96px;
        }
        .cta-card {
            background: var(--dark-bg);
            border-radius: 24px;
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-card::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -40px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(245, 185, 69, 0.28) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-card h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }
        .cta-card p {
            font-size: 16px;
            color: #cbd5e1;
            margin-bottom: 28px;
            position: relative;
            z-index: 2;
        }
        .cta-card .btn {
            position: relative;
            z-index: 2;
        }
        .site-footer {
            background: var(--dark-bg);
            padding: 72px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
            font-size: 24px;
        }
        .footer-brand p {
            color: #94A3B8;
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: #94A3B8;
            font-size: 14px;
            padding: 6px 0;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-col p {
            color: #94A3B8;
            font-size: 14px;
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col p i {
            flex-shrink: 0;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.2);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 32px;
            align-items: center;
            justify-content: center;
        }
        .footer-bottom p {
            color: #64748B;
            font-size: 13px;
        }
        .footer-bottom a {
            color: #64748B;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .read-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .site-header {
                height: 60px;
            }
            .nav-links {
                display: none;
            }
            .header-actions .search-btn {
                display: none;
            }
            .header-actions .btn {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .category-hero {
                padding: 110px 0 48px;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .hero-content .hero-sub {
                font-size: 16px;
            }
            .hero-stats {
                gap: 12px;
                padding: 20px 12px;
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-number {
                font-size: 26px;
            }
            .content-section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .content-section .section-header {
                margin-bottom: 32px;
            }
            .read-body {
                padding: 20px;
            }
            .cta-section {
                padding: 32px 0 48px;
            }
            .cta-card {
                padding: 40px 24px;
                border-radius: 16px;
            }
            .cta-card h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
                padding: 16px 8px;
            }
            .stat-number {
                font-size: 22px;
            }
            .stat-label {
                font-size: 12px;
            }
            .compare-table {
                font-size: 14px;
                min-width: 520px;
            }
            .compare-table thead th {
                padding: 14px 16px;
                font-size: 14px;
            }
            .compare-table tbody td {
                padding: 14px 16px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .logo {
                font-size: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

/* roulang page: article */
:root {
    --primary: #1E6BFF;
    --primary-hover: #1653CC;
    --primary-soft: #F0F6FF;
    --accent: #F5B945;
    --text: #1F2937;
    --text-light: #64748B;
    --text-faint: #94A3B8;
    --bg-light: #F6F8FC;
    --card-bg: #FFFFFF;
    --dark-bg: #0F172A;
    --border: #E2E8F0;
    --radius-card: 16px;
    --radius-input: 10px;
    --radius-pill: 999px;
    --shadow-card: 0 8px 24px rgba(30, 107, 255, 0.08);
    --shadow-hover: 0 14px 32px rgba(30, 107, 255, 0.14);
    --shadow-nav: 0 4px 24px rgba(15, 23, 42, 0.06);
    --transition: all .3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; line-height: 1.8; -webkit-font-smoothing: antialiased; }
body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: #fff;
    font-size: 16px;
    line-height: 1.8;
    padding-top: 72px;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-hover); }
ul, ol { list-style-position: inside; }
button { font-family: inherit; cursor: pointer; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    height: 72px;
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.65);
    transition: var(--transition);
}
.site-header.scrolled {
    height: 64px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow-nav);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--primary) !important; }
.logo i { font-size: 22px; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { color: #1E293B; font-size: 16px; font-weight: 500; position: relative; transition: var(--transition); }
.nav-links a:hover, .nav-links a.active { color: var(--primary); font-weight: 700; }
.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -6px; left: 0;
    width: 100%; height: 2px;
    border-radius: 2px;
    background: var(--primary);
}
.nav-actions { display: flex; align-items: center; gap: 16px; }
.search-btn {
    width: 40px; height: 40px;
    border-radius: var(--radius-pill);
    border: none;
    background: rgba(255, 255, 255, 0.6);
    color: var(--text-light);
    font-size: 16px;
    transition: var(--transition);
}
.search-btn:hover { background: var(--primary-soft); color: var(--primary); }
.btn-primary {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-pill);
    background: var(--primary);
    color: #fff !important;
    font-size: 16px; font-weight: 600;
    border: none;
    transition: var(--transition);
}
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(30, 107, 255, 0.3); }
.btn-primary:focus { outline: none; box-shadow: 0 0 0 3px rgba(30, 107, 255, 0.3); }
.btn-outline {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-pill);
    background: #fff;
    color: var(--primary);
    border: 1px solid var(--primary);
    font-size: 16px; font-weight: 600;
    transition: var(--transition);
}
.btn-outline:hover { background: var(--primary-soft); }
.btn-accent {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-pill);
    background: var(--accent);
    color: #1F2937 !important;
    font-size: 16px; font-weight: 700;
    border: none;
    transition: var(--transition);
}
.btn-accent:hover { filter: brightness(1.05); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(245, 185, 69, 0.3); color: #1F2937; }
.btn-outline-light {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-pill);
    background: transparent;
    color: #fff !important;
    border: 1px solid rgba(255, 255, 255, 0.4);
    font-size: 16px; font-weight: 600;
    transition: var(--transition);
}
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.1); color: #fff !important; border-color: rgba(255, 255, 255, 0.6); }
.menu-toggle {
    display: none;
    width: 40px; height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    font-size: 18px;
    align-items: center;
    justify-content: center;
}
.mobile-menu {
    display: none;
    position: fixed;
    top: 60px; left: 16px; right: 16px;
    z-index: 999;
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow-hover);
    padding: 16px;
    flex-direction: column;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
    display: flex; align-items: center;
    height: 48px;
    padding: 0 12px;
    color: var(--text);
    font-size: 16px; font-weight: 500;
    border-radius: 10px;
}
.mobile-menu a:hover, .mobile-menu a.active { background: var(--primary-soft); color: var(--primary); }

main { background: var(--bg-light); }

.page-banner {
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 48px 0 64px;
    background-color: var(--dark-bg);
}
.banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(15, 23, 42, 0.72) 0%, rgba(30, 107, 255, 0.45) 55%, rgba(246, 248, 252, 0.25) 100%);
}
.page-banner .container { position: relative; z-index: 1; }
.breadcrumb {
    display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
}
.breadcrumb a { color: rgba(255, 255, 255, 0.85); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .current {
    color: rgba(255, 255, 255, 0.65);
    max-width: 300px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.breadcrumb i { font-size: 10px; color: rgba(255, 255, 255, 0.5); }

.article-body-wrap { padding-bottom: 48px; }
.article-wrapper {
    max-width: 900px;
    margin: -36px auto 0;
    position: relative;
    z-index: 2;
    padding: 0 16px;
}
.article-card {
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    padding: 48px;
}
.article-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text);
    margin-bottom: 16px;
}
.article-meta {
    display: flex; align-items: center; flex-wrap: wrap; gap: 20px;
    padding-bottom: 24px;
    border-bottom: 1px solid #F1F5F9;
    margin-bottom: 32px;
    font-size: 14px;
    color: var(--text-light);
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-item i { color: var(--primary); font-size: 14px; width: 16px; text-align: center; }

.article-content { font-size: 16px; line-height: 1.9; color: #374151; }
.article-content > * { margin-bottom: 16px; }
.article-content p { margin-bottom: 16px; }
.article-content h2 { font-size: 24px; font-weight: 700; color: var(--text); margin-top: 48px; margin-bottom: 16px; }
.article-content h3 { font-size: 20px; font-weight: 600; color: var(--text); margin-top: 28px; margin-bottom: 12px; }
.article-content blockquote {
    border-left: 4px solid var(--primary);
    background: var(--primary-soft);
    padding: 16px 20px;
    border-radius: 0 12px 12px 0;
    margin: 20px 0;
    color: var(--text-light);
}
.article-content img {
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    margin: 24px auto;
}
.article-content ul { list-style: disc; margin: 16px 0; padding-left: 24px; }
.article-content ol { list-style: decimal; margin: 16px 0; padding-left: 24px; }
.article-content li { margin-bottom: 8px; }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 4px; }

.article-tags {
    display: flex; align-items: center; flex-wrap: wrap; gap: 10px;
    padding: 24px 0;
    border-top: 1px solid #F1F5F9;
    margin-top: 32px;
}
.tags-label { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-faint); }
.tag {
    display: inline-block;
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    background: var(--bg-light);
    color: var(--text-light);
    font-size: 13px;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.tag:hover { background: var(--primary-soft); color: var(--primary); border-color: var(--primary); }

.article-pager {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding-top: 24px;
    border-top: 1px solid #F1F5F9;
}
.pager-side { flex: 1; min-width: 0; }
.pager-side:last-child { text-align: right; }
.pager-link {
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--text);
    font-size: 14px; font-weight: 500;
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--bg-light);
    transition: var(--transition);
}
.pager-link:hover { background: var(--primary-soft); color: var(--primary); }
.btn-return {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-pill);
    background: var(--primary);
    color: #fff !important;
    font-size: 14px; font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
}
.btn-return:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(30, 107, 255, 0.25); color: #fff !important; }

.not-found { text-align: center; padding: 60px 0; }
.not-found i { font-size: 48px; color: var(--text-faint); margin-bottom: 16px; }
.not-found p { font-size: 18px; color: var(--text-light); margin-bottom: 20px; }

.related-section { padding: 48px 0 64px; background: var(--bg-light); }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; }
.section-head h2 { font-size: 28px; font-weight: 700; color: var(--text); }
.more-link { font-size: 14px; font-weight: 500; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.more-link:hover { color: var(--primary-hover); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
    background: #fff;
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
    border: 1px solid transparent;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.related-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.related-card .card-body { padding: 20px 24px 24px; }
.card-tag {
    display: inline-block;
    font-size: 12px; font-weight: 600;
    color: var(--primary);
    background: var(--primary-soft);
    padding: 2px 10px;
    border-radius: var(--radius-pill);
    margin-bottom: 10px;
}
.related-card h3 {
    font-size: 18px; font-weight: 600; line-height: 1.5;
    color: var(--text);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-card p {
    font-size: 14px; color: var(--text-light); line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 12px;
}
.read-link { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }

.empty-state {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    min-height: 180px;
    border: 2px dashed var(--border);
    border-radius: 16px;
    color: var(--text-faint);
    font-size: 14px;
    background: rgba(255, 255, 255, 0.6);
    gap: 8px;
    grid-column: 1 / -1;
}
.empty-state i { font-size: 36px; color: var(--text-faint); opacity: 0.5; }

.cta-section {
    padding: 64px 0;
    background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.94), rgba(15, 23, 42, 0.82)), url('/assets/images/coverpic/cover-1.png');
    background-size: cover;
    background-position: center;
    position: relative;
}
.cta-card { text-align: center; max-width: 720px; margin: 0 auto; padding: 32px 24px; }
.cta-icon {
    width: 72px; height: 72px;
    margin: 0 auto 20px;
    border-radius: 20px;
    background: rgba(245, 185, 69, 0.15);
    display: flex; align-items: center; justify-content: center;
    font-size: 28px;
    color: var(--accent);
    border: 1px solid rgba(245, 185, 69, 0.3);
}
.cta-card h2 { font-size: 32px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.cta-card p { font-size: 16px; color: rgba(255, 255, 255, 0.7); margin-bottom: 28px; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

.site-footer { background: var(--dark-bg); color: rgba(255, 255, 255, 0.65); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .logo { color: #fff !important; font-size: 22px; margin-bottom: 16px; display: inline-flex; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, 0.5); }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
.footer-col a { display: block; color: rgba(255, 255, 255, 0.55); font-size: 14px; margin-bottom: 10px; }
.footer-col a:hover { color: var(--accent); }
.footer-col p { font-size: 14px; color: rgba(255, 255, 255, 0.45); margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 24px 0; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 13px; color: rgba(255, 255, 255, 0.35); }
.footer-bottom a { color: rgba(255, 255, 255, 0.35); }

@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .nav-links { display: none; }
    .menu-toggle { display: inline-flex; }
    .search-btn { display: none; }
}
@media (max-width: 768px) {
    body { padding-top: 60px; }
    .site-header { height: 60px; }
    .article-card { padding: 32px 24px; border-radius: 16px; }
    .article-title { font-size: 24px; }
    .article-content { font-size: 15px; }
    .article-meta { gap: 12px; }
    .cta-card h2 { font-size: 26px; }
    .page-banner { padding: 36px 0 48px; }
    .article-wrapper { margin-top: -24px; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .related-grid { grid-template-columns: 1fr; }
    .article-pager { flex-direction: column; }
    .pager-side:last-child { text-align: center; }
    .pager-side { text-align: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .article-card { padding: 24px 16px; }
    .article-tags { gap: 6px; }
    .cta-card { padding: 24px 16px; }
    .breadcrumb .current { max-width: 200px; }
}

/* roulang page: category3 */
:root {
            --primary: #1E6BFF;
            --primary-hover: #1653CC;
            --accent: #F5B945;
            --text: #1F2937;
            --text-light: #64748B;
            --bg-light: #F6F8FC;
            --card-bg: #FFFFFF;
            --dark-bg: #0F172A;
            --success: #0FA37F;
            --error: #E11D48;
            --radius-card: 16px;
            --radius-input: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(30, 107, 255, 0.08);
            --shadow-hover: 0 14px 32px rgba(30, 107, 255, 0.14);
            --shadow-nav: 0 4px 24px rgba(15, 23, 42, 0.06);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: #FFFFFF;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
            background: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 14px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        /* ===== 玻璃导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.65);
            transition: background 0.3s, box-shadow 0.3s, height 0.3s;
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.92);
            height: 64px;
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 20px;
        }

        .logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-links a {
            font-size: 16px;
            color: #1E293B;
            font-weight: 500;
            line-height: 72px;
            position: relative;
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 700;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 14px;
            width: 100%;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text);
            background: transparent;
            transition: background 0.2s, color 0.2s;
        }

        .search-btn:hover {
            background: #F0F6FF;
            color: var(--primary);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 12px 28px;
            transition: all 0.25s ease;
            outline: none;
        }

        .btn:focus-visible {
            box-shadow: 0 0 0 2px rgba(30, 107, 255, 0.3);
        }

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

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 10px 24px rgba(30, 107, 255, 0.22);
        }

        .btn-outline {
            background: #FFFFFF;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-outline:hover {
            background: #F0F6FF;
            transform: translateY(-1px);
        }

        .btn-accent {
            background: var(--accent);
            color: #0F172A;
        }

        .btn-accent:hover {
            filter: brightness(1.05);
            transform: translateY(-1px);
        }

        .header-cta {
            padding: 10px 24px;
            font-size: 14px;
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
        }

        .mobile-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: transform 0.3s, opacity 0.3s;
        }

        .mobile-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

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

        .mobile-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 移动端导航面板 ===== */
        .mobile-panel {
            display: none;
            position: fixed;
            top: 68px;
            left: 16px;
            right: 16px;
            z-index: 999;
            background: #FFFFFF;
            border-radius: 16px;
            box-shadow: 0 20px 50px rgba(15, 23, 42, 0.18);
            padding: 12px;
        }

        .mobile-panel a {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            color: var(--text);
            border-radius: 10px;
        }

        .mobile-panel a.active {
            color: var(--primary);
            font-weight: 700;
            background: #F0F6FF;
        }

        .mobile-panel a:hover {
            background: #F6F8FC;
        }

        .mobile-panel.open {
            display: block;
        }

        /* ===== Hero ===== */
        .page-hero {
            padding-top: 160px;
            padding-bottom: 80px;
            background: var(--bg-light);
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 20% 20%, rgba(30, 107, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 85% 70%, rgba(245, 185, 69, 0.08) 0%, transparent 55%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(30, 107, 255, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.01em;
            margin-bottom: 18px;
        }

        .hero-subtitle {
            font-size: 18px;
            color: #4B5563;
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-image {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(30, 107, 255, 0.16);
        }

        .hero-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: 20px;
        }

        .hero-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: 20px;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0) 55%, rgba(15, 23, 42, 0.35) 100%);
        }

        /* ===== 通用标题 ===== */
        .section {
            padding-top: 96px;
            padding-bottom: 96px;
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 12px;
            color: var(--text);
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
        }

        .section-header .badge-line {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .section-header .badge-line::before,
        .section-header .badge-line::after {
            content: '';
            width: 28px;
            height: 2px;
            border-radius: 2px;
            background: rgba(30, 107, 255, 0.3);
        }

        /* ===== 内容区块 ===== */
        .content-wrap {
            background: #FFFFFF;
        }

        .content-wrap-alt {
            background: var(--bg-light);
        }

        /* 左侧窄卡 */
        .info-layout {
            display: grid;
            grid-template-columns: 300px 1fr;
            gap: 32px;
            align-items: start;
        }

        .info-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid #EEF2F7;
            padding: 24px;
        }

        .info-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .info-card h3 i {
            color: var(--primary);
            font-size: 16px;
            width: 22px;
            text-align: center;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-light);
            background: var(--bg-light);
            border: 1px solid transparent;
            border-radius: var(--radius-pill);
            padding: 8px 16px;
            cursor: default;
            transition: all 0.2s;
        }

        .tag-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #F0F6FF;
        }

        .tag-item.active {
            background: var(--primary);
            color: #FFFFFF;
            font-weight: 600;
        }

        /* 右侧内容列表 */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid #EEF2F7;
            box-shadow: var(--shadow-card);
            padding: 20px;
            transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
        }

        .news-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .news-thumb {
            width: 120px;
            height: 90px;
            border-radius: 12px;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-light);
        }

        .news-body {
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-light);
            margin-bottom: 6px;
        }

        .news-meta .tag {
            background: #F0F6FF;
            color: var(--primary);
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 2px 12px;
            font-size: 12px;
        }

        .news-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 4px;
            transition: color 0.2s;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-item:hover .news-title {
            color: var(--primary);
        }

        .news-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid #E2E8F0;
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color 0.25s, box-shadow 0.25s;
        }

        .faq-item.open {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--primary);
            background: #F8FAFF;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            gap: 12px;
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 14px;
            flex-shrink: 0;
            transition: transform 0.25s, background 0.25s, color 0.25s;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #FFFFFF;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--dark-bg);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(30, 107, 255, 0.15);
            filter: blur(60px);
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 16px;
            color: #94A3B8;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark-bg);
            color: #94A3B8;
            padding: 64px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand .logo {
            font-size: 20px;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: #94A3B8;
            margin-top: 12px;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            padding: 5px 0;
            color: #94A3B8;
            font-size: 14px;
        }

        .footer-col a:hover {
            color: var(--primary);
        }

        .footer-col p {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 5px 0;
            color: #94A3B8;
            font-size: 14px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: #64748B;
        }

        .footer-bottom a {
            color: #64748B;
        }

        .footer-bottom a:hover {
            color: #FFFFFF;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 16px;
            }
            .hero-grid {
                gap: 40px;
            }
            .hero-title {
                font-size: 36px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 60px;
            }
            .nav-links {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-image img {
                height: 260px;
            }
            .section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .info-layout {
                grid-template-columns: 1fr;
            }
            .news-item {
                flex-direction: column;
                gap: 12px;
            }
            .news-thumb {
                width: 100%;
                height: 140px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
            .cta-inner h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-title {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .news-title {
                font-size: 16px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
        }