/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f4c81;
            --primary-dark: #0a355c;
            --primary-light: #e8f0fe;
            --accent: #f5a623;
            --accent-dark: #d4891f;
            --bg-light: #f8fafc;
            --bg-dark: #0f172a;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --text-light: #f1f5f9;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(15, 76, 129, 0.08);
            --shadow-hover: 0 12px 40px rgba(15, 76, 129, 0.16);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --nav-height: 72px;
            --max-width: 1200px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-dark);
            background: #ffffff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Navigation (Desktop) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 32px rgba(15, 76, 129, 0.08);
            background: rgba(255, 255, 255, 0.98);
        }
        .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .logo-link:hover {
            color: var(--primary-dark);
        }
        .logo-link .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--accent) !important;
            color: #fff !important;
            padding: 8px 24px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 14px rgba(245, 166, 35, 0.3);
        }
        .nav-cta-btn:hover {
            background: var(--accent-dark) !important;
            box-shadow: 0 6px 20px rgba(245, 166, 35, 0.4) !important;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px 8px;
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1060;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border);
            padding: 6px 0 env(safe-area-inset-bottom, 6px);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
        }
        .mobile-tab-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            max-width: 480px;
            margin: 0 auto;
        }
        .mobile-tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: 12px;
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition);
            min-width: 64px;
        }
        .mobile-tab-item i {
            font-size: 1.3rem;
            transition: transform var(--transition);
        }
        .mobile-tab-item.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .mobile-tab-item.active i {
            transform: scale(1.05);
        }
        .mobile-tab-item:hover {
            color: var(--primary);
        }
        .mobile-tab-item .tab-label {
            font-size: 0.65rem;
            line-height: 1.2;
        }

        /* ===== Hero ===== */
        .hero-section {
            padding-top: calc(var(--nav-height) + 40px);
            padding-bottom: 80px;
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, #0f4c81 0%, #1a6bb0 50%, #0f4c81 100%);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, #ffffff, transparent);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            padding: 6px 18px 6px 12px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: #fff;
            margin-bottom: 24px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero-badge i {
            color: var(--accent);
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-title span {
            color: var(--accent);
        }
        .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            background: var(--accent);
            color: #fff;
            border: none;
            box-shadow: 0 8px 32px rgba(245, 166, 35, 0.35);
            transition: all var(--transition);
        }
        .btn-primary-custom:hover {
            background: var(--accent-dark);
            box-shadow: 0 12px 40px rgba(245, 166, 35, 0.45);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: all var(--transition);
        }
        .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-stat-item {
            color: #fff;
        }
        .hero-stat-item .num {
            font-size: 1.8rem;
            font-weight: 800;
            display: block;
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            opacity: 0.75;
        }

        /* ===== Section Shared ===== */
        .section-pad {
            padding: 80px 0;
        }
        .section-pad-sm {
            padding: 56px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            text-align: center;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .section-title-left {
            text-align: left;
        }
        .section-desc-left {
            text-align: left;
            margin-left: 0;
        }

        /* ===== Features / Cards ===== */
        .feature-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
            height: 100%;
            text-align: center;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }
        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin: 0 auto 20px;
            transition: background var(--transition), transform var(--transition);
        }
        .feature-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== Cover Card (图文区块) ===== */
        .cover-card {
            display: flex;
            align-items: center;
            gap: 48px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            overflow: hidden;
            padding: 0;
        }
        .cover-card .cover-text {
            flex: 1;
            padding: 48px 40px;
        }
        .cover-card .cover-text h2 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .cover-card .cover-text p {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .cover-card .cover-text .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }
        .cover-card .cover-text .tag-list span {
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
        }
        .cover-card .cover-img {
            flex: 0 0 380px;
            min-height: 320px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .cover-card .cover-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        @media (max-width: 992px) {
            .cover-card {
                flex-direction: column;
            }
            .cover-card .cover-img {
                flex: 0 0 240px;
                width: 100%;
                min-height: 240px;
            }
            .cover-card .cover-text {
                padding: 32px 24px;
            }
        }

        /* ===== CMS / News List ===== */
        .cms-list-section {
            background: var(--bg-light);
        }
        .cms-card {
            background: #fff;
            border-radius: var(--radius-sm);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .cms-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .cms-card .cms-cat {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .cms-card h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            flex: 1;
        }
        .cms-card h4 a {
            color: var(--text-dark);
        }
        .cms-card h4 a:hover {
            color: var(--primary);
        }
        .cms-card .cms-excerpt {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .cms-card .cms-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 12px;
            margin-top: auto;
        }
        .cms-card .cms-meta .cms-date {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .cms-card .cms-meta .cms-readmore {
            color: var(--primary);
            font-weight: 500;
            font-size: 0.85rem;
        }
        .cms-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            font-size: 1rem;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 16px;
            border-radius: var(--radius);
            background: #fff;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .stat-card .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card .stat-num {
                font-size: 1.8rem;
            }
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(to right, var(--primary), var(--accent));
            opacity: 0.2;
        }
        .step-item {
            text-align: center;
            position: relative;
            padding: 24px 16px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 auto 16px;
        }
        .step-item h4 {
            font-size: 1rem;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        @media (max-width: 992px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid::before {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .step-item {
                padding: 16px 12px;
            }
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            padding: 18px 24px;
            background: #fff;
            border: none;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-light);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
        }
        .faq-accordion .accordion-body {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            background: #fff;
        }
        .faq-accordion .accordion-button::after {
            background-size: 16px;
            opacity: 0.6;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #1a6bb0 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 2.2rem;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
        }
        .cta-content .btn-primary-custom {
            font-size: 1.1rem;
            padding: 16px 44px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 24px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-link {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .footer-brand .logo-link .logo-icon {
            background: var(--accent);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 340px;
            margin-top: 12px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: center;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-stat-item .num {
                font-size: 1.4rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section-pad {
                padding: 56px 0;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .mobile-bottom-tab {
                display: block;
            }
            .site-header {
                height: 60px;
            }
            .hero-section {
                padding-top: calc(60px + 24px);
                padding-bottom: 48px;
                min-height: auto;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-sub {
                font-size: 0.95rem;
                margin-bottom: 24px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                justify-content: center;
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .hero-stats {
                margin-top: 32px;
                padding-top: 20px;
                gap: 16px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-desc {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
            .feature-card {
                padding: 24px 18px;
            }
            .feature-card .icon-wrap {
                width: 52px;
                height: 52px;
                font-size: 1.4rem;
            }
            .cover-card .cover-text h2 {
                font-size: 1.4rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .cta-content h2 {
                font-size: 1.6rem;
            }
            .cta-content p {
                font-size: 0.95rem;
            }
            .cms-card {
                padding: 18px;
            }
            body {
                padding-bottom: 72px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-sub {
                font-size: 0.88rem;
            }
            .hero-stats {
                gap: 12px;
            }
            .hero-stat-item .num {
                font-size: 1.2rem;
            }
            .hero-stat-item .label {
                font-size: 0.75rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .cms-card h4 {
                font-size: 0.95rem;
            }
            .stat-card .stat-num {
                font-size: 1.5rem;
            }
            .mobile-tab-item {
                min-width: 52px;
                padding: 4px 8px;
            }
            .mobile-tab-item i {
                font-size: 1.1rem;
            }
            .mobile-tab-item .tab-label {
                font-size: 0.6rem;
            }
        }

        /* ===== Mobile Nav Drawer ===== */
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 1090;
            background: rgba(0, 0, 0, 0.4);
            backdrop-filter: blur(6px);
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition);
        }
        .mobile-drawer.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-drawer-content {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: 280px;
            background: #fff;
            padding: 24px;
            transform: translateX(100%);
            transition: transform var(--transition);
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.1);
        }
        .mobile-drawer.open .mobile-drawer-content {
            transform: translateX(0);
        }
        .mobile-drawer .drawer-close {
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-dark);
            cursor: pointer;
            margin-bottom: 24px;
            display: block;
        }
        .mobile-drawer .drawer-nav a {
            display: block;
            padding: 12px 16px;
            border-radius: 12px;
            font-weight: 500;
            color: var(--text-dark);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .mobile-drawer .drawer-nav a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-drawer .drawer-nav a.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-drawer .drawer-nav a.cta {
            background: var(--accent);
            color: #fff;
            text-align: center;
            margin-top: 12px;
        }
        .mobile-drawer .drawer-nav a.cta:hover {
            background: var(--accent-dark);
        }

        /* ===== Accessability ===== */
        a:focus-visible,
        button:focus-visible,
        .btn-primary-custom:focus-visible,
        .btn-outline-custom:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .mobile-tab-item:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-light);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 10px;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #0b1a2e;
            --text-dark: #1a1a2e;
            --text-muted: #6c757d;
            --text-light: #f0f0f0;
            --border-color: #e0e0e0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.18);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.3s ease;
            --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-dark);
            background: #ffffff;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

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

        ul,
        ol {
            padding-left: 1.25rem;
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: #ffffff;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1040;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--secondary);
            text-decoration: none;
            letter-spacing: -0.5px;
            transition: var(--transition);
        }
        .logo-link:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 10px;
            font-size: 1.1rem;
            box-shadow: 0 3px 10px rgba(230, 57, 70, 0.3);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links a {
            padding: 8px 16px;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.1);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.4);
            color: #fff !important;
            background: linear-gradient(135deg, var(--primary-dark), #a00d1a) !important;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--secondary);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #122b44 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .article-banner .container-custom {
            position: relative;
            z-index: 2;
        }
        .article-banner h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.3;
            margin-bottom: 12px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }
        .article-banner .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
        }
        .article-banner .meta-info span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-banner .meta-info i {
            color: var(--accent);
        }
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
        }
        .breadcrumb-custom a:hover {
            color: #ffffff;
            text-decoration: underline;
        }
        .breadcrumb-custom .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 文章正文区 ===== */
        .article-main {
            padding: 50px 0 60px;
            background: #ffffff;
        }
        .article-content-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-dark);
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            margin-top: 32px;
            margin-bottom: 16px;
            font-weight: 700;
            color: var(--secondary);
        }
        .article-body h2 {
            font-size: 1.6rem;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 8px;
        }
        .article-body h3 {
            font-size: 1.3rem;
        }
        .article-body p {
            margin-bottom: 18px;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 18px;
            padding-left: 1.5rem;
        }
        .article-body li {
            margin-bottom: 6px;
        }
        .article-body img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin: 24px auto;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            font-weight: 500;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-light);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-muted);
        }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-light);
            border-radius: var(--radius-lg);
        }
        .article-not-found i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .article-not-found h3 {
            font-size: 1.4rem;
            color: var(--secondary);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .article-not-found .btn-back {
            display: inline-block;
            padding: 10px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
            text-decoration: none;
        }
        .article-not-found .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            text-decoration: none;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            background: var(--bg-light);
            padding: 50px 0;
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 30px;
            text-align: center;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            text-decoration: none;
            display: block;
            color: var(--text-dark);
            border: 1px solid var(--border-color);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            text-decoration: none;
            color: var(--text-dark);
        }
        .related-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 18px 20px;
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 50px 0 30px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-brand .logo-link {
            color: #ffffff;
            margin-bottom: 14px;
            display: inline-flex;
        }
        .footer-brand .logo-link:hover {
            color: var(--primary-light);
        }
        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 10px;
            max-width: 360px;
        }
        .footer-col h5 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--primary);
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            padding: 5px 0;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px 20px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
                border-bottom: 1px solid var(--border-color);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 10px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .article-banner h1 {
                font-size: 1.7rem;
            }
            .article-banner {
                padding: 40px 0 35px;
                min-height: 200px;
            }
        }

        @media (max-width: 768px) {
            .navbar-inner {
                height: 56px;
            }
            .logo-link {
                font-size: 1.15rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
            .article-banner h1 {
                font-size: 1.4rem;
            }
            .article-banner .meta-info {
                font-size: 0.85rem;
                gap: 12px;
            }
            .article-main {
                padding: 30px 0 40px;
            }
            .article-body {
                font-size: 1rem;
            }
            .article-body h2 {
                font-size: 1.35rem;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .related-card img {
                height: 130px;
            }
            .site-footer {
                padding: 35px 0 20px;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 14px;
            }
            .article-banner h1 {
                font-size: 1.2rem;
            }
            .article-banner .meta-info {
                flex-direction: column;
                gap: 6px;
                font-size: 0.8rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .related-card img {
                height: 180px;
            }
            .article-body {
                font-size: 0.95rem;
            }
            .footer-inner {
                gap: 24px;
            }
            .nav-cta-btn {
                padding: 8px 14px !important;
                font-size: 0.85rem !important;
            }
        }

        /* ===== 辅助 ===== */
        .text-primary-custom {
            color: var(--primary);
        }
        .bg-primary-custom {
            background: var(--primary);
        }
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border: none;
            color: #fff;
            padding: 10px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
        }
        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.4);
            color: #fff;
        }
        .section-padding {
            padding: 60px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 40px 0;
            }
        }

        /* ===== 移动端底部 Tab 导航 ===== */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: #ffffff;
            border-top: 1px solid var(--border-color);
            box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.06);
            z-index: 1050;
            justify-content: space-around;
            align-items: center;
            padding: 6px 0;
            padding-bottom: env(safe-area-inset-bottom, 6px);
        }
        .mobile-bottom-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 0.7rem;
            color: var(--text-muted);
            text-decoration: none;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            font-weight: 500;
        }
        .mobile-bottom-tab a i {
            font-size: 1.2rem;
        }
        .mobile-bottom-tab a.active {
            color: var(--primary);
        }
        .mobile-bottom-tab a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        @media (max-width: 992px) {
            .mobile-bottom-tab {
                display: flex;
            }
            body {
                padding-bottom: 62px;
            }
        }

        @media (max-width: 520px) {
            .mobile-bottom-tab a {
                font-size: 0.65rem;
            }
            .mobile-bottom-tab a i {
                font-size: 1.1rem;
            }
        }

/* roulang page: category1 */
/* ========== :root 设计变量 ========== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-light: #ffd166;
            --bg-dark: #0b1a2e;
            --bg-mid: #f0f4f8;
            --bg-light: #ffffff;
            --text-dark: #0b1a2e;
            --text-mid: #2c3e50;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border-light: #e2e8f0;
            --border-mid: #cbd5e1;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 48px rgba(0,0,0,0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            --container-w: 1200px;
        }

        /* ========== Reset / Base ========== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-dark);
            background: var(--bg-light);
        }
        a { text-decoration: none; color: var(--primary); transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-dark); }
        .container-custom {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            background: var(--bg-dark);
            padding: 0 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 16px rgba(0,0,0,0.3);
            border-bottom: 2px solid var(--primary);
        }
        .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
        }
        .logo-link .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: 0 0 12px rgba(230, 57, 70, 0.5);
        }
        .logo-link:hover { color: var(--primary-light); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            color: rgba(255,255,255,0.8);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-white);
            background: rgba(255,255,255,0.12);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-links a.nav-cta-btn {
            background: var(--primary);
            color: #fff;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.4);
        }
        .nav-links a.nav-cta-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.5);
        }
        .nav-toggle {
            display: none;
            background: none;
            color: var(--text-white);
            font-size: 26px;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover { background: rgba(255,255,255,0.1); }

        /* ========== 移动端底部 Tab 导航 ========== */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: var(--bg-dark);
            border-top: 1px solid rgba(255,255,255,0.1);
            z-index: 1060;
            padding: 6px 0 env(safe-area-inset-bottom, 6px);
            justify-content: space-around;
            box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
        }
        .mobile-bottom-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            color: rgba(255,255,255,0.6);
            font-size: 11px;
            font-weight: 500;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            gap: 2px;
        }
        .mobile-bottom-tab a i { font-size: 20px; }
        .mobile-bottom-tab a.active,
        .mobile-bottom-tab a:hover { color: var(--primary-light); background: rgba(255,255,255,0.05); }
        .mobile-bottom-tab a.nav-cta-tab {
            color: var(--primary-light);
        }
        .mobile-bottom-tab a.nav-cta-tab i {
            background: var(--primary);
            color: #fff;
            padding: 8px;
            border-radius: 50%;
            font-size: 18px;
            margin-bottom: 2px;
        }

        /* ========== Hero ========== */
        .hero-section {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center center;
            background-blend-mode: overlay;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,26,46,0.85) 0%, rgba(230,57,70,0.5) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            padding: 60px 0;
        }
        .hero-content .badge-hero {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 20px;
            box-shadow: 0 4px 12px rgba(230,57,70,0.4);
        }
        .hero-content h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 18px;
            text-shadow: 0 2px 16px rgba(0,0,0,0.3);
        }
        .hero-content h1 span { color: var(--primary-light); }
        .hero-content p {
            font-size: 18px;
            color: rgba(255,255,255,0.85);
            max-width: 620px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-actions .btn-main {
            background: var(--primary);
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 6px 24px rgba(230,57,70,0.4);
            transition: var(--transition);
        }
        .hero-actions .btn-main:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(230,57,70,0.5);
            color: #fff;
        }
        .hero-actions .btn-outline-light {
            background: transparent;
            color: #fff;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            border: 2px solid rgba(255,255,255,0.5);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .hero-actions .btn-outline-light:hover {
            background: rgba(255,255,255,0.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-3px);
        }

        /* ========== 通用板块 ========== */
        .section-pad { padding: 80px 0; }
        .section-pad-sm { padding: 56px 0; }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .title-tag {
            display: inline-block;
            background: rgba(230,57,70,0.12);
            color: var(--primary);
            padding: 4px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .bg-mid { background: var(--bg-mid); }
        .bg-dark-section {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .bg-dark-section .section-title h2 { color: var(--text-white); }
        .bg-dark-section .section-title p { color: rgba(255,255,255,0.7); }

        /* ========== 卡片 ========== */
        .card-custom {
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .card-custom:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .card-custom .card-icon {
            width: 56px;
            height: 56px;
            background: rgba(230,57,70,0.1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .card-custom h5 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .card-custom p {
            font-size: 15px;
            color: var(--text-mid);
            margin-bottom: 0;
        }
        .card-custom .badge-card {
            display: inline-block;
            background: var(--accent);
            color: var(--text-dark);
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        /* ========== 流程步骤 ========== */
        .step-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: center;
        }
        .step-item {
            flex: 1 1 200px;
            max-width: 240px;
            text-align: center;
            position: relative;
        }
        .step-item .step-num {
            width: 56px;
            height: 56px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            margin: 0 auto 16px;
            box-shadow: 0 6px 20px rgba(230,57,70,0.3);
        }
        .step-item h5 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
        .step-item p { font-size: 14px; color: var(--text-light); margin-bottom: 0; }
        .step-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .step-item:not(:last-child)::after {
                content: '\f054';
                font-family: 'Font Awesome 6 Free';
                font-weight: 900;
                position: absolute;
                right: -22px;
                top: 20px;
                color: var(--primary-light);
                font-size: 18px;
                opacity: 0.5;
            }
        }

        /* ========== 适用场景 / 图文区块 ========== */
        .scene-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .scene-grid .scene-img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }
        .scene-grid .scene-img img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            display: block;
        }
        .scene-grid .scene-text h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .scene-grid .scene-text p {
            font-size: 16px;
            color: var(--text-mid);
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .scene-grid .scene-text .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .scene-grid .scene-text .tag-list span {
            background: rgba(230,57,70,0.08);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .scene-grid { grid-template-columns: 1fr; }
            .scene-grid .scene-img img { height: 240px; }
        }

        /* ========== 数据/统计块 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stats-item {
            padding: 28px 16px;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.1);
        }
        .stats-item .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary-light);
        }
        .stats-item .label {
            font-size: 15px;
            color: rgba(255,255,255,0.7);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }

        /* ========== FAQ ========== */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 18px 0;
        }
        .faq-item:first-child { border-top: 1px solid var(--border-light); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            padding: 4px 0;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { color: var(--primary); font-size: 18px; transition: var(--transition); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 0 0 0;
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 12px 0 4px 0;
        }
        .faq-item.active .faq-question i { transform: rotate(180deg); }

        /* ========== CTA ========== */
        .cta-block {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,26,46,0.88) 0%, rgba(230,57,70,0.6) 100%);
            z-index: 1;
        }
        .cta-block > * { position: relative; z-index: 2; }
        .cta-block h3 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 17px;
            color: rgba(255,255,255,0.8);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-block .btn-cta {
            background: var(--primary);
            color: #fff;
            padding: 16px 44px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 17px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 6px 24px rgba(230,57,70,0.5);
            transition: var(--transition);
        }
        .cta-block .btn-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 36px rgba(230,57,70,0.6);
            color: #fff;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-link {
            font-size: 20px;
            margin-bottom: 14px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            margin-top: 8px;
        }
        .footer-col h5 {
            color: var(--text-white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            font-size: 13px;
            text-align: center;
            color: rgba(255,255,255,0.4);
        }
        @media (max-width: 768px) {
            .footer-inner { grid-template-columns: 1fr; gap: 28px; }
        }

        /* ========== 响应式 ========== */
        @media (max-width: 992px) {
            .nav-links { display: none; }
            .nav-toggle { display: block; }
            .mobile-bottom-tab { display: flex; }
            .site-header { margin-bottom: 0; }
            body { padding-bottom: 68px; }
            .hero-content h1 { font-size: 34px; }
            .hero-section { min-height: 420px; }
            .section-title h2 { font-size: 26px; }
            .cta-block { padding: 40px 24px; }
            .cta-block h3 { font-size: 24px; }
        }
        @media (max-width: 576px) {
            .container-custom { padding: 0 16px; }
            .hero-content h1 { font-size: 26px; }
            .hero-content p { font-size: 15px; }
            .hero-actions .btn-main,
            .hero-actions .btn-outline-light { padding: 12px 24px; font-size: 14px; }
            .section-pad { padding: 48px 0; }
            .section-title { margin-bottom: 32px; }
            .card-custom { padding: 20px 16px; }
            .stats-item .num { font-size: 28px; }
            .step-item { flex: 1 1 160px; max-width: 100%; }
        }

        /* ========== 移动端侧滑菜单 (桌面导航的移动替代) ========== */
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: -280px;
            width: 260px;
            height: 100vh;
            background: var(--bg-dark);
            z-index: 1070;
            padding: 32px 24px;
            box-shadow: 4px 0 24px rgba(0,0,0,0.5);
            transition: left 0.35s ease;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .mobile-drawer.open { left: 0; }
        .mobile-drawer a {
            color: rgba(255,255,255,0.8);
            font-size: 17px;
            font-weight: 500;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .mobile-drawer a.active { color: var(--primary-light); }
        .mobile-drawer .drawer-close {
            align-self: flex-end;
            background: none;
            color: #fff;
            font-size: 26px;
            cursor: pointer;
            padding: 4px 8px;
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 1065;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .drawer-overlay.show { opacity: 1; pointer-events: all; }

        /* ========== 额外微交互 ========== */
        .btn:focus, .form-control:focus { box-shadow: 0 0 0 4px rgba(230,57,70,0.25); }
        .card-custom .card-icon i { transition: var(--transition); }
        .card-custom:hover .card-icon i { transform: scale(1.1); color: var(--primary-dark); }