/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1b3d;
            --primary-light: #1a2d6d;
            --primary-dark: #0a1228;
            --accent: #f5a623;
            --accent-light: #ffc64a;
            --accent-dark: #d48c0e;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f1b3d;
            --bg-section-alt: #f0f2f8;
            --text-primary: #0f1b3d;
            --text-body: #3d4a5c;
            --text-muted: #8492a6;
            --text-light: #ffffff;
            --border-color: #e4e8ee;
            --border-radius: 12px;
            --border-radius-lg: 20px;
            --border-radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(15, 27, 61, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 27, 61, 0.1);
            --shadow-lg: 0 20px 60px rgba(15, 27, 61, 0.15);
            --shadow-accent: 0 8px 30px rgba(245, 166, 35, 0.3);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-section: 5rem;
            --spacing-block: 3rem;
            --container-max: 1200px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            padding-left: 0;
            list-style: none;
            margin-bottom: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-primary);
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
            margin-bottom: 0.75rem;
        }
        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            padding-left: 1.25rem;
            padding-right: 1.25rem;
            margin-left: auto;
            margin-right: auto;
            width: 100%;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 6px rgba(15, 27, 61, 0.04);
            transition: var(--transition);
        }
        .site-header .navbar {
            padding-top: 0.6rem;
            padding-bottom: 0.6rem;
        }
        .site-header .navbar-brand {
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0;
        }
        .site-header .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
        }
        .site-header .navbar-brand:hover {
            color: var(--primary);
        }
        .site-header .nav-link {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-body) !important;
            padding: 0.5rem 1rem !important;
            border-radius: var(--border-radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .site-header .nav-link:hover,
        .site-header .nav-link.active {
            color: var(--primary) !important;
            background: rgba(15, 27, 61, 0.04);
        }
        .site-header .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1rem;
            right: 1rem;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-cta-btn {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: var(--primary-dark) !important;
            font-weight: 700;
            padding: 0.5rem 1.5rem !important;
            border-radius: 50px !important;
            border: none;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(245, 166, 35, 0.25);
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 166, 35, 0.35);
            color: var(--primary-dark) !important;
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
        }
        .search-form {
            position: relative;
            max-width: 220px;
        }
        .search-form .form-control {
            border-radius: 50px;
            border: 1px solid var(--border-color);
            background: var(--bg-body);
            padding: 0.45rem 1rem 0.45rem 2.5rem;
            font-size: 0.9rem;
            transition: var(--transition);
            color: var(--text-primary);
        }
        .search-form .form-control:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
            background: #fff;
        }
        .search-form .search-icon {
            position: absolute;
            left: 0.9rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.85rem;
            pointer-events: none;
        }
        .navbar-toggler {
            border: none;
            padding: 0.5rem;
            border-radius: 8px;
            color: var(--primary);
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--accent);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(15, 27, 61, 0.92), rgba(26, 45, 109, 0.88)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: var(--text-light);
            padding: 6rem 1.25rem;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(245, 166, 35, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .hero-section .hero-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.2);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(245, 166, 35, 0.3);
            color: var(--accent-light);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.4rem 1.4rem;
            border-radius: 50px;
            margin-bottom: 1.5rem;
            letter-spacing: 0.5px;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1.2rem;
            line-height: 1.15;
            letter-spacing: -1px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
        }
        .hero-section h1 .highlight {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-section .hero-desc {
            font-size: 1.25rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 2.2rem;
            line-height: 1.7;
        }
        .hero-section .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
        }
        .hero-section .btn-primary-custom {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: var(--primary-dark);
            font-weight: 700;
            padding: 0.85rem 2.8rem;
            border-radius: 50px;
            border: none;
            font-size: 1.1rem;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(245, 166, 35, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        .hero-section .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 166, 35, 0.4);
            color: var(--primary-dark);
        }
        .hero-section .btn-outline-custom {
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 0.85rem 2.8rem;
            border-radius: 50px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            font-size: 1.1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        .hero-section .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            transform: translateY(-3px);
        }
        .hero-section .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2.5rem 3.5rem;
            margin-top: 3.5rem;
            padding-top: 2.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-section .hero-stats .stat-item {
            text-align: center;
        }
        .hero-section .hero-stats .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-light);
            display: block;
            line-height: 1.2;
        }
        .hero-section .hero-stats .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
        }

        /* ===== Section通用 ===== */
        .section-padding {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-subtitle {
            color: #fff;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
            letter-spacing: -0.5px;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-subtitle {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 620px;
            margin: 0 auto 2.5rem;
            font-weight: 400;
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }
        .section-header {
            text-align: center;
            margin-bottom: 3.5rem;
        }

        /* ===== Feature Cards ===== */
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 2.2rem 1.8rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(245, 166, 35, 0.2);
        }
        .feature-card .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(15, 27, 61, 0.06), rgba(26, 45, 109, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 1.2rem;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 0;
            flex-grow: 1;
        }
        .feature-card .feature-img-wrap {
            width: 100%;
            height: 160px;
            border-radius: var(--border-radius-sm);
            overflow: hidden;
            margin-bottom: 1.2rem;
            background: var(--bg-section-alt);
        }
        .feature-card .feature-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .feature-card:hover .feature-img-wrap img {
            transform: scale(1.05);
        }

        /* ===== Steps / 流程 ===== */
        .steps-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            counter-reset: step-counter;
        }
        .step-item {
            flex: 1 1 200px;
            max-width: 260px;
            text-align: center;
            position: relative;
            padding: 2rem 1.2rem;
            background: var(--bg-card);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            counter-increment: step-counter;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item::before {
            content: counter(step-counter);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 0.9rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(245, 166, 35, 0.3);
        }
        .step-item .step-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 0.8rem;
            margin-top: 0.4rem;
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .step-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .step-item {
                flex: 1 1 180px;
            }
        }

        /* ===== Stats / 数据 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 2rem;
            text-align: center;
        }
        .stats-grid .stat-card {
            padding: 1.8rem 1rem;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--border-radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .stats-grid .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(245, 166, 35, 0.2);
        }
        .stats-grid .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent-light);
            display: block;
            line-height: 1.2;
        }
        .stats-grid .stat-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
            margin-top: 0.3rem;
        }

        /* ===== Category Cards ===== */
        .category-card {
            position: relative;
            border-radius: var(--border-radius);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .category-card .cat-img {
            height: 200px;
            overflow: hidden;
            background: var(--bg-section-alt);
        }
        .category-card .cat-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .cat-img img {
            transform: scale(1.06);
        }
        .category-card .cat-body {
            padding: 1.5rem 1.5rem 2rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .cat-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .category-card .cat-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            flex-grow: 1;
            margin-bottom: 1rem;
        }
        .category-card .cat-body .cat-link {
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: var(--transition);
            align-self: flex-start;
        }
        .category-card .cat-body .cat-link:hover {
            color: var(--accent);
            gap: 0.7rem;
        }

        /* ===== CMS Post List ===== */
        .post-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.2rem;
        }
        .post-item {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1.2rem;
            background: var(--bg-card);
            padding: 1.2rem 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .post-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(245, 166, 35, 0.15);
        }
        .post-item .post-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            align-items: center;
            flex: 0 0 auto;
        }
        .post-item .post-meta .post-cat {
            background: rgba(15, 27, 61, 0.06);
            padding: 0.15rem 0.8rem;
            border-radius: 50px;
            font-weight: 600;
            color: var(--primary);
        }
        .post-item .post-meta .post-date {
            font-weight: 400;
        }
        .post-item .post-title {
            flex: 1 1 240px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            transition: var(--transition);
            margin: 0;
        }
        .post-item .post-title a {
            color: inherit;
        }
        .post-item .post-title a:hover {
            color: var(--accent);
        }
        .post-empty {
            text-align: center;
            padding: 2.5rem 1rem;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--border-radius);
            border: 1px dashed var(--border-color);
            font-size: 1.05rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            margin-bottom: 0.8rem;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(245, 166, 35, 0.2);
        }
        .faq-item .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-item .faq-question:hover {
            background: rgba(15, 27, 61, 0.02);
        }
        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            color: var(--accent);
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .faq-item .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-light)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            background-blend-mode: overlay;
            padding: 4.5rem 1.25rem;
            text-align: center;
            color: #fff;
            border-radius: var(--border-radius-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(245, 166, 35, 0.1) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 2rem;
        }
        .cta-section .btn-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: var(--primary-dark);
            font-weight: 700;
            padding: 0.9rem 3rem;
            border-radius: 50px;
            border: none;
            font-size: 1.15rem;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(245, 166, 35, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 166, 35, 0.4);
            color: var(--primary-dark);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.8rem;
        }
        .site-footer .footer-brand .brand-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1rem;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
            margin-bottom: 1.5rem;
        }
        .site-footer .footer-heading {
            font-weight: 700;
            color: #fff;
            font-size: 1rem;
            margin-bottom: 1rem;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 0.5rem;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            margin-top: 2.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent-light);
        }

        /* ===== Back to Top ===== */
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            border: none;
            z-index: 1040;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: var(--transition);
            cursor: pointer;
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 3.5rem;
            }
            .hero-section h1 {
                font-size: 2.8rem;
            }
            .section-title {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 2.8rem;
            }
            .hero-section {
                min-height: 70vh;
                padding: 4rem 1.25rem;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
            .hero-section .hero-desc {
                font-size: 1.05rem;
            }
            .hero-section .hero-stats {
                gap: 1.5rem 2rem;
                margin-top: 2rem;
                padding-top: 1.5rem;
            }
            .hero-section .hero-stats .stat-number {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-subtitle {
                font-size: 1rem;
            }
            .feature-card {
                padding: 1.5rem 1.2rem;
            }
            .step-item {
                flex: 1 1 140px;
                padding: 1.5rem 1rem;
            }
            .post-item {
                padding: 1rem 1.2rem;
                flex-direction: column;
                align-items: flex-start;
            }
            .post-item .post-title {
                flex: 1 1 auto;
                width: 100%;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .cta-section {
                padding: 3rem 1.25rem;
                border-radius: var(--border-radius);
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-header .navbar-brand {
                font-size: 1.2rem;
            }
            .site-header .navbar-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .search-form {
                max-width: 100%;
                margin-top: 0.5rem;
            }
        }
        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .hero-section .hero-desc {
                font-size: 0.95rem;
            }
            .hero-section .btn-primary-custom,
            .hero-section .btn-outline-custom {
                padding: 0.7rem 1.8rem;
                font-size: 1rem;
                width: 100%;
                justify-content: center;
            }
            .hero-section .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .feature-card .feature-img-wrap {
                height: 120px;
            }
            .category-card .cat-img {
                height: 150px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.8rem;
            }
            .stats-grid .stat-number {
                font-size: 1.8rem;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta {
                padding: 0.7rem 2rem;
                font-size: 1rem;
                width: 100%;
                justify-content: center;
            }
            .site-footer {
                padding: 2.5rem 0 1rem;
            }
            .step-item {
                flex: 1 1 100%;
                max-width: 100%;
            }
            .back-to-top {
                bottom: 1.2rem;
                right: 1.2rem;
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --accent: #e94560;
            --accent-hover: #d63850;
            --gold: #f5a623;
            --bg-light: #f8f9fc;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #4a4a6a;
            --text-muted: #8e8ea0;
            --border-color: #e8e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0,0,0,0.06);
            --shadow-hover: 0 16px 48px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-light);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a { text-decoration: none; transition: var(--transition); }
        a:hover { opacity: 0.9; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; }

        .container { max-width: 1200px; padding: 0 20px; }

        /* ===== Header ===== */
        .site-header {
            background: #ffffff;
            box-shadow: 0 2px 20px rgba(0,0,0,0.04);
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.92);
            border-bottom: 1px solid rgba(232,232,240,0.5);
        }
        .site-header .navbar { padding: 12px 0; }
        .site-header .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--primary) !important;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .site-header .navbar-brand .brand-icon {
            width: 38px; height: 38px;
            background: linear-gradient(135deg, var(--accent), var(--gold));
            border-radius: 10px;
            display: flex; align-items: center; justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(233,69,96,0.25);
        }
        .site-header .nav-link {
            font-weight: 500;
            color: var(--text-body) !important;
            padding: 8px 18px !important;
            border-radius: 8px;
            transition: var(--transition);
            font-size: 0.95rem;
            position: relative;
        }
        .site-header .nav-link:hover { color: var(--accent) !important; background: rgba(233,69,96,0.06); }
        .site-header .nav-link.active {
            color: var(--accent) !important;
            background: rgba(233,69,96,0.08);
        }
        .site-header .nav-link.active::after {
            content: '';
            position: absolute; bottom: 2px; left: 18px; right: 18px;
            height: 3px; background: var(--accent); border-radius: 3px;
        }
        .navbar-toggler {
            border: none !important;
            color: var(--primary) !important;
            font-size: 1.4rem;
            padding: 4px 8px;
            box-shadow: none !important;
        }
        .search-form { position: relative; }
        .search-form .search-icon {
            position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
            color: var(--text-muted); font-size: 0.9rem; pointer-events: none;
        }
        .search-form .form-control {
            border-radius: 30px;
            padding-left: 40px;
            padding-right: 18px;
            border: 1px solid var(--border-color);
            background: var(--bg-light);
            font-size: 0.9rem;
            width: 180px;
            transition: var(--transition);
            height: 40px;
        }
        .search-form .form-control:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(233,69,96,0.12);
            width: 220px;
        }
        .nav-cta-btn {
            background: linear-gradient(135deg, var(--accent), #d63850);
            color: #fff !important;
            border-radius: 30px;
            padding: 8px 24px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            box-shadow: 0 4px 16px rgba(233,69,96,0.25);
            transition: var(--transition);
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(233,69,96,0.35);
        }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative;
            padding: 60px 0 50px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            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/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-banner .banner-overlay {
            position: absolute; inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(233,69,96,0.15), transparent 60%);
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-banner .breadcrumb-custom {
            display: flex; gap: 10px; align-items: center;
            color: rgba(255,255,255,0.6);
            font-size: 0.85rem;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb-custom a { color: rgba(255,255,255,0.7); }
        .article-banner .breadcrumb-custom a:hover { color: #fff; }
        .article-banner .breadcrumb-custom .sep { color: rgba(255,255,255,0.35); }
        .article-banner .breadcrumb-custom .current { color: var(--gold); }
        .article-banner h1 {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            max-width: 800px;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-banner .meta-line {
            display: flex; gap: 24px; align-items: center;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-banner .meta-line .badge-cat {
            background: var(--accent);
            color: #fff;
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .article-banner .meta-line i { margin-right: 6px; color: var(--gold); }

        /* ===== Article Content ===== */
        .article-section {
            padding: 50px 0 70px;
        }
        .article-main {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 48px;
            border: 1px solid var(--border-color);
        }
        .article-main .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-main .article-body h2, 
        .article-main .article-body h3 {
            color: var(--primary);
            margin-top: 32px;
            margin-bottom: 16px;
            font-weight: 700;
        }
        .article-main .article-body h2 { font-size: 1.5rem; }
        .article-main .article-body h3 { font-size: 1.25rem; }
        .article-main .article-body p { margin-bottom: 18px; }
        .article-main .article-body ul, 
        .article-main .article-body ol { margin-bottom: 18px; padding-left: 24px; }
        .article-main .article-body li { margin-bottom: 8px; }
        .article-main .article-body a { color: var(--accent); text-decoration: underline; }
        .article-main .article-body a:hover { color: var(--accent-hover); }
        .article-main .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg-light);
            padding: 18px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-body);
            font-style: italic;
        }
        .article-main .article-body img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-main .article-body pre {
            background: var(--primary);
            color: #e8e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            font-size: 0.9rem;
            margin: 24px 0;
        }

        .article-main .article-footer {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-main .article-footer .tags {
            display: flex; gap: 10px; flex-wrap: wrap;
        }
        .article-main .article-footer .tags .tag {
            background: var(--bg-light);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-main .article-footer .tags .tag:hover { border-color: var(--accent); color: var(--accent); }
        .article-main .article-footer .share-links { display: flex; gap: 12px; }
        .article-main .article-footer .share-links a {
            width: 38px; height: 38px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex; align-items: center; justify-content: center;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-main .article-footer .share-links a:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            transform: translateY(-2px);
        }

        /* ===== Sidebar ===== */
        .article-sidebar .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
            padding: 28px;
            margin-bottom: 28px;
        }
        .article-sidebar .sidebar-card .sidebar-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--bg-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-sidebar .sidebar-card .sidebar-title i { color: var(--accent); }
        .sidebar-related-list { list-style: none; padding: 0; margin: 0; }
        .sidebar-related-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--bg-light);
        }
        .sidebar-related-list li:last-child { border-bottom: none; }
        .sidebar-related-list li a {
            color: var(--text-body);
            font-size: 0.92rem;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            transition: var(--transition);
        }
        .sidebar-related-list li a:hover { color: var(--accent); }
        .sidebar-related-list li a .num {
            width: 24px; height: 24px;
            border-radius: 6px;
            background: var(--bg-light);
            display: flex; align-items: center; justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--text-muted);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .sidebar-related-list li a:hover .num { background: var(--accent); color: #fff; }
        .sidebar-cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius);
            padding: 32px 28px;
            text-align: center;
            color: #fff;
        }
        .sidebar-cta-box h5 { font-size: 1.1rem; font-weight: 700; margin-bottom: 12px; }
        .sidebar-cta-box p { font-size: 0.9rem; opacity: 0.8; margin-bottom: 20px; }
        .sidebar-cta-box .btn-cta-side {
            background: var(--accent);
            color: #fff;
            border-radius: 30px;
            padding: 10px 28px;
            font-weight: 600;
            border: none;
            transition: var(--transition);
        }
        .sidebar-cta-box .btn-cta-side:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(233,69,96,0.3); }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 0 0 60px;
        }
        .related-section .section-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-section .section-title i { color: var(--accent); }
        .related-card {
            background: #fff;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
        }
        .related-card .card-body {
            padding: 20px 22px;
        }
        .related-card .card-body .cat-tag {
            display: inline-block;
            background: rgba(233,69,96,0.1);
            color: var(--accent);
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .related-card .card-body h5 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card .card-body h5 a { color: inherit; }
        .related-card .card-body h5 a:hover { color: var(--accent); }
        .related-card .card-body .meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex; gap: 16px;
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
        }
        .not-found-box .nf-icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .not-found-box h3 { color: var(--primary); font-weight: 700; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
        .not-found-box .btn-home {
            background: var(--accent);
            color: #fff;
            border-radius: 30px;
            padding: 10px 32px;
            font-weight: 600;
            border: none;
            transition: var(--transition);
        }
        .not-found-box .btn-home:hover { background: var(--accent-hover); transform: translateY(-2px); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 30px;
            border-top: 4px solid var(--accent);
        }
        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .brand-icon {
            width: 36px; height: 36px;
            background: linear-gradient(135deg, var(--accent), var(--gold));
            border-radius: 10px;
            display: flex; align-items: center; justify-content: center;
            color: #fff; font-size: 1rem;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            opacity: 0.7;
            max-width: 360px;
            line-height: 1.7;
        }
        .site-footer .footer-heading {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer .footer-heading::after {
            content: '';
            position: absolute; bottom: 0; left: 0;
            width: 30px; height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li { margin-bottom: 10px; }
        .site-footer .footer-links a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover { color: var(--gold); padding-left: 4px; }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            opacity: 0.6;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .site-header .navbar-collapse {
                background: #fff;
                padding: 16px 20px;
                border-radius: var(--radius-sm);
                box-shadow: 0 8px 32px rgba(0,0,0,0.08);
                margin-top: 12px;
            }
            .site-header .nav-link { padding: 10px 0 !important; }
            .site-header .nav-link.active::after { display: none; }
            .search-form.d-lg-none { display: block; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-main { padding: 24px 20px; }
            .article-sidebar { margin-top: 32px; }
        }

        @media (max-width: 767px) {
            .article-banner { padding: 40px 0 36px; min-height: 200px; }
            .article-banner h1 { font-size: 1.3rem; }
            .article-banner .meta-line { gap: 12px; font-size: 0.8rem; }
            .article-section { padding: 30px 0 50px; }
            .article-main { padding: 20px 16px; border-radius: var(--radius-sm); }
            .article-main .article-body { font-size: 0.98rem; }
            .related-card .card-img { height: 140px; }
            .site-footer { padding: 40px 0 24px; }
            .site-footer .footer-brand { font-size: 1.2rem; }
        }

        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.1rem; }
            .article-main { padding: 16px 12px; }
            .article-main .article-footer { flex-direction: column; align-items: flex-start; }
            .sidebar-cta-box { padding: 24px 18px; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #2d2d4a;
            --primary-dark: #0f0f1a;
            --accent: #f0a500;
            --accent-light: #fbc85a;
            --accent-dark: #c98800;
            --bg-light: #f8f7f4;
            --bg-dark: #1a1a2e;
            --text-dark: #1a1a2e;
            --text-light: #ffffff;
            --text-muted: #6b7280;
            --text-body: #2d3748;
            --border-color: #e5e7eb;
            --border-light: rgba(255, 255, 255, 0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --section-gap: 80px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: #ffffff;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1040;
            backdrop-filter: blur(8px);
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border-color);
        }
        .site-header .navbar {
            padding-top: 0.6rem;
            padding-bottom: 0.6rem;
        }
        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary) !important;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand .brand-icon {
            color: var(--accent);
            font-size: 1.6rem;
            display: inline-flex;
            align-items: center;
        }
        .navbar-brand:hover {
            color: var(--primary) !important;
            transform: scale(1.02);
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--text-body) !important;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            font-size: 1rem;
        }
        .navbar-nav .nav-link:hover {
            color: var(--accent) !important;
            background: rgba(240, 165, 0, 0.06);
        }
        .navbar-nav .nav-link.active {
            color: var(--accent) !important;
            background: rgba(240, 165, 0, 0.10);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1.2rem;
            right: 1.2rem;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .navbar-toggler {
            border: none;
            background: transparent;
            color: var(--primary);
            font-size: 1.4rem;
            padding: 0.25rem 0.5rem;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .search-form {
            position: relative;
            display: flex;
            align-items: center;
        }
        .search-form .search-icon {
            position: absolute;
            left: 14px;
            color: var(--text-muted);
            font-size: 0.9rem;
            pointer-events: none;
        }
        .search-form .form-control {
            border-radius: 50px;
            padding-left: 38px;
            padding-right: 16px;
            border: 1px solid var(--border-color);
            background: var(--bg-light);
            font-size: 0.95rem;
            width: 200px;
            transition: var(--transition);
            height: 40px;
        }
        .search-form .form-control:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(240, 165, 0, 0.12);
            width: 240px;
            background: #fff;
        }
        .nav-cta-btn {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff !important;
            border: none;
            border-radius: 50px;
            padding: 0.5rem 1.6rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(240, 165, 0, 0.30);
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(240, 165, 0, 0.40);
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
        }
        .nav-cta-btn:active {
            transform: scale(0.96);
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 60%, #3d3d6b 100%);
            padding: 80px 0 70px;
            position: relative;
            overflow: hidden;
            min-height: 300px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 80%, rgba(240, 165, 0, 0.10), transparent 60%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            color: #fff;
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 0.75rem;
        }
        .page-banner h1 .highlight {
            color: var(--accent);
        }
        .page-banner .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 0.5rem;
        }
        .page-banner .breadcrumb-item,
        .page-banner .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
        }
        .page-banner .breadcrumb-item a:hover {
            color: var(--accent);
        }
        .page-banner .breadcrumb-item.active {
            color: var(--accent-light);
        }
        .page-banner .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.4);
        }
        .page-banner .banner-desc {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.15rem;
            max-width: 640px;
            line-height: 1.8;
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: var(--section-gap) 0;
        }
        .section-block.bg-white {
            background: #ffffff;
        }
        .section-block.bg-light {
            background: var(--bg-light);
        }
        .section-block.bg-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-title-wrap {
            margin-bottom: 3rem;
        }
        .section-title-wrap .section-label {
            display: inline-block;
            background: rgba(240, 165, 0, 0.15);
            color: var(--accent-dark);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 0.25rem 1rem;
            border-radius: 50px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 0.75rem;
        }
        .section-title-wrap .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.3px;
            margin-bottom: 0.75rem;
        }
        .section-title-wrap .section-sub {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.8;
        }
        .bg-dark .section-title-wrap .section-title {
            color: #fff;
        }
        .bg-dark .section-title-wrap .section-sub {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ===== 卡片通用 ===== */
        .card-custom {
            border: none;
            border-radius: var(--radius-md);
            background: #fff;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card-custom:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .card-custom .card-body {
            padding: 1.8rem;
        }
        .card-custom .card-icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 1rem;
        }
        .card-custom .card-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
        }
        .card-custom .card-text {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .card-custom .card-link {
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 0.5rem;
        }
        .card-custom .card-link i {
            transition: var(--transition);
            font-size: 0.8rem;
        }
        .card-custom .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 步骤卡片 ===== */
        .step-card {
            text-align: center;
            padding: 2rem 1.5rem;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            border: 1px solid var(--border-color);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent-light);
        }
        .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 1.2rem;
            box-shadow: 0 4px 14px rgba(240, 165, 0, 0.30);
        }
        .step-card h5 {
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .step-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 0;
        }

        /* ===== 内容列表 ===== */
        .content-list-item {
            display: flex;
            gap: 1.5rem;
            padding: 1.5rem 0;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .content-list-item:last-child {
            border-bottom: none;
        }
        .content-list-item:hover {
            padding-left: 0.5rem;
        }
        .content-list-item .item-thumb {
            width: 160px;
            min-width: 160px;
            height: 110px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            object-fit: cover;
            background: #e5e7eb;
        }
        .content-list-item .item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .content-list-item:hover .item-thumb img {
            transform: scale(1.05);
        }
        .content-list-item .item-body h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.4rem;
        }
        .content-list-item .item-body h5 a {
            color: var(--text-dark);
        }
        .content-list-item .item-body h5 a:hover {
            color: var(--accent);
        }
        .content-list-item .item-body .item-meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 0.3rem;
        }
        .content-list-item .item-body .item-excerpt {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-list-item .item-body .item-tag {
            display: inline-block;
            background: rgba(240, 165, 0, 0.12);
            color: var(--accent-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.15rem 0.7rem;
            border-radius: 50px;
            margin-right: 0.5rem;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 0.75rem;
            background: #fff;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fff;
            transition: var(--transition);
            font-size: 1.05rem;
        }
        .faq-item .faq-question i {
            color: var(--accent);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 2rem;
            line-height: 1.8;
        }
        .cta-section .cta-btn {
            background: var(--accent);
            color: var(--primary-dark);
            border: none;
            border-radius: 50px;
            padding: 0.85rem 2.8rem;
            font-weight: 700;
            font-size: 1.1rem;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(240, 165, 0, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .cta-btn:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(240, 165, 0, 0.45);
            color: var(--primary-dark);
        }
        .cta-section .cta-btn:active {
            transform: scale(0.97);
        }

        /* ===== 标签 ===== */
        .tag-badge {
            display: inline-block;
            background: rgba(240, 165, 0, 0.12);
            color: var(--accent-dark);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.25rem 0.9rem;
            border-radius: 50px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .tag-badge:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .tag-badge-outline {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-muted);
        }
        .tag-badge-outline:hover {
            border-color: var(--accent);
            color: var(--accent-dark);
            background: rgba(240, 165, 0, 0.06);
        }

        /* ===== 统计数字 ===== */
        .stat-card {
            text-align: center;
            padding: 1.8rem 1rem;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-card .stat-label {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-top: 0.3rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 30px;
        }
        .site-footer .footer-brand {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 1rem;
        }
        .site-footer .footer-brand .brand-icon {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .site-footer .footer-desc {
            font-size: 0.95rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }
        .site-footer .footer-heading {
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 1.2rem;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 0.6rem;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.93rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-links li i {
            width: 20px;
            text-align: center;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            padding-top: 1.8rem;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 60px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .section-title-wrap .section-title {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 60px 0 50px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner .banner-desc {
                font-size: 1rem;
            }
            .section-title-wrap .section-title {
                font-size: 1.6rem;
            }
            .section-block {
                padding: 50px 0;
            }
            .content-list-item {
                flex-direction: column;
                gap: 0.8rem;
            }
            .content-list-item .item-thumb {
                width: 100%;
                min-width: unset;
                height: 180px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .cta-btn {
                padding: 0.7rem 2rem;
                font-size: 1rem;
            }
            .search-form .form-control {
                width: 140px;
            }
            .navbar-brand {
                font-size: 1.25rem;
            }
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .site-footer .footer-brand {
                font-size: 1.3rem;
            }
            .step-card {
                padding: 1.5rem 1rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-gap: 40px;
            }
            .page-banner {
                padding: 40px 0 36px;
                min-height: 200px;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner .banner-desc {
                font-size: 0.92rem;
            }
            .section-title-wrap .section-title {
                font-size: 1.35rem;
            }
            .section-title-wrap .section-sub {
                font-size: 0.95rem;
            }
            .card-custom .card-body {
                padding: 1.2rem;
            }
            .content-list-item .item-thumb {
                height: 140px;
            }
            .content-list-item .item-body h5 {
                font-size: 1rem;
            }
            .stat-card {
                padding: 1.2rem 0.8rem;
            }
            .stat-card .stat-number {
                font-size: 1.6rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .cta-btn {
                padding: 0.6rem 1.6rem;
                font-size: 0.9rem;
            }
            .navbar-brand {
                font-size: 1.1rem;
            }
            .navbar-nav .nav-link {
                font-size: 0.9rem;
                padding: 0.4rem 0.8rem !important;
            }
            .search-form .form-control {
                width: 100%;
            }
            .faq-item .faq-question {
                font-size: 0.95rem;
                padding: 1rem 1.2rem;
            }
            .faq-item .faq-answer {
                padding: 0 1.2rem 1rem;
                font-size: 0.9rem;
            }
        }

        /* ===== 通用辅助 ===== */
        .gap-1 { gap: 0.25rem; }
        .gap-2 { gap: 0.5rem; }
        .gap-3 { gap: 1rem; }
        .gap-4 { gap: 1.5rem; }
        .gap-5 { gap: 2rem; }
        .fw-600 { font-weight: 600; }
        .fw-700 { font-weight: 700; }
        .text-accent { color: var(--accent); }
        .text-muted-light { color: rgba(255, 255, 255, 0.65); }
        .mt-2 { margin-top: 0.5rem; }
        .mt-3 { margin-top: 1rem; }
        .mt-4 { margin-top: 1.5rem; }
        .mb-0 { margin-bottom: 0; }
        .mb-2 { margin-bottom: 0.5rem; }
        .mb-3 { margin-bottom: 1rem; }
        .mb-4 { margin-bottom: 1.5rem; }
        .mb-5 { margin-bottom: 2rem; }
        .pb-2 { padding-bottom: 0.5rem; }
        .pt-2 { padding-top: 0.5rem; }
        .rounded-sm { border-radius: var(--radius-sm); }
        .rounded-md { border-radius: var(--radius-md); }
        .shadow-hover { transition: var(--transition); }
        .shadow-hover:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .border-accent-light {
            border: 1px solid rgba(240, 165, 0, 0.20);
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --accent: #f6a623;
            --accent-hover: #e09515;
            --accent-light: #fef3e0;
            --bg-light: #f8f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a4a;
            --text-dark: #1a1a2e;
            --text-body: #3d3d5c;
            --text-muted: #7a7a9a;
            --text-light: #ffffff;
            --border-color: #e8e8f0;
            --border-light: #f0f0f5;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 8px 30px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 42, 108, 0.14);
            --shadow-accent: 0 8px 30px rgba(246, 166, 35, 0.25);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1280px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
            margin: 0;
            padding: 0;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            padding-left: 0;
            list-style: none;
            margin-bottom: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 0;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 20px rgba(26, 42, 108, 0.05);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .site-header .navbar {
            padding-top: 0;
            padding-bottom: 0;
            width: 100%;
        }
        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            padding: 0;
        }
        .site-header .navbar-brand:hover {
            color: var(--primary);
        }
        .site-header .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 10px;
            color: var(--accent);
            font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(26, 42, 108, 0.20);
        }
        .navbar-nav .nav-item {
            margin: 0 2px;
        }
        .navbar-nav .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background: var(--bg-light);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: var(--accent-light);
            font-weight: 600;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .search-form {
            position: relative;
            max-width: 200px;
        }
        .search-form .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.85rem;
            pointer-events: none;
        }
        .search-form .form-control {
            border-radius: 30px;
            border: 1.5px solid var(--border-color);
            background: var(--bg-light);
            padding: 8px 16px 8px 38px;
            font-size: 0.9rem;
            transition: var(--transition);
            min-height: 40px;
        }
        .search-form .form-control:focus {
            border-color: var(--accent);
            background: var(--bg-white);
            box-shadow: 0 0 0 4px rgba(246, 166, 35, 0.12);
            outline: none;
        }
        .nav-cta-btn {
            background: linear-gradient(135deg, var(--accent), var(--accent-hover));
            border: none;
            border-radius: 30px;
            padding: 9px 24px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(246, 166, 35, 0.30);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(246, 166, 35, 0.40);
            color: var(--primary-dark);
        }
        .navbar-toggler {
            border: none;
            background: transparent;
            color: var(--primary);
            padding: 4px 8px;
            font-size: 1.4rem;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }

        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
            overflow: hidden;
            padding: 60px 0 50px;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
            animation: bannerPan 18s ease-in-out infinite alternate;
        }
        @keyframes bannerPan {
            0% {
                transform: scale(1) translate(0, 0);
            }
            100% {
                transform: scale(1.06) translate(-8px, -4px);
            }
        }
        .page-banner .banner-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 42, 108, 0.30), transparent 70%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(246, 166, 35, 0.18);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(246, 166, 35, 0.25);
            border-radius: 40px;
            padding: 6px 20px;
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
        }
        .page-banner h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -1px;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }
        .page-banner .lead {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .page-banner .banner-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 10px;
        }
        .page-banner .banner-stats .stat-item {
            text-align: center;
            color: rgba(255, 255, 255, 0.90);
        }
        .page-banner .banner-stats .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
        }
        .page-banner .banner-stats .stat-label {
            font-size: 0.85rem;
            opacity: 0.75;
        }
        .breadcrumb-area {
            position: relative;
            z-index: 2;
            margin-bottom: 8px;
        }
        .breadcrumb-area .breadcrumb {
            background: transparent;
            padding: 0;
            margin: 0;
            justify-content: center;
        }
        .breadcrumb-area .breadcrumb-item {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .breadcrumb-area .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.7);
        }
        .breadcrumb-area .breadcrumb-item a:hover {
            color: var(--accent);
        }
        .breadcrumb-area .breadcrumb-item.active {
            color: var(--accent);
        }
        .breadcrumb-area .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.3);
            content: '/';
        }

        /* ===== Section通用 ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 40px;
            text-align: center;
            line-height: 1.7;
        }
        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-light);
            color: var(--accent-hover);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 30px;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .section-badge i {
            font-size: 0.75rem;
        }
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 平台介绍板块 ===== */
        .intro-section {
            background: var(--bg-white);
        }
        .intro-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 300px;
            transition: var(--transition);
        }
        .intro-image-wrap:hover img {
            transform: scale(1.02);
        }
        .intro-content .feature-list {
            margin-top: 20px;
        }
        .intro-content .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 10px 0;
            font-size: 1rem;
            color: var(--text-body);
            border-bottom: 1px solid var(--border-light);
        }
        .intro-content .feature-list li:last-child {
            border-bottom: none;
        }
        .intro-content .feature-list li i {
            color: var(--accent);
            font-size: 1.1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ===== 核心服务卡片 ===== */
        .services-section {
            background: var(--bg-light);
        }
        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .service-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .service-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .service-card:hover .card-img img {
            transform: scale(1.05);
        }
        .service-card .card-img .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 26, 74, 0.5), transparent);
        }
        .service-card .card-body {
            padding: 24px 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card .card-body .card-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-hover);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .service-card .card-body h5 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .service-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
        }
        .service-card .card-body .card-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.88rem;
            margin-top: 12px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .service-card .card-body .card-link i {
            transition: var(--transition);
            font-size: 0.8rem;
        }
        .service-card .card-body .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 服务优势 ===== */
        .advantages-section {
            background: var(--bg-white);
        }
        .advantage-item {
            text-align: center;
            padding: 30px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-light);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            height: 100%;
        }
        .advantage-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            background: var(--bg-white);
            border-color: var(--accent-light);
        }
        .advantage-item .adv-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent);
            box-shadow: 0 6px 20px rgba(26, 42, 108, 0.15);
        }
        .advantage-item h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .advantage-item p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .stats-section .container {
            position: relative;
            z-index: 2;
        }
        .stats-section .section-title {
            color: var(--text-light);
        }
        .stats-section .section-subtitle {
            color: rgba(255, 255, 255, 0.6);
        }
        .stat-block {
            text-align: center;
            padding: 20px 10px;
        }
        .stat-block .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .stat-block .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -1px;
            line-height: 1.2;
        }
        .stat-block .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 6px;
        }

        /* ===== 服务流程 ===== */
        .process-section {
            background: var(--bg-light);
        }
        .process-step {
            text-align: center;
            position: relative;
            padding: 20px 16px;
        }
        .process-step .step-number {
            width: 56px;
            height: 56px;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent);
            box-shadow: 0 6px 24px rgba(26, 42, 108, 0.18);
            position: relative;
            z-index: 2;
        }
        .process-step .step-line {
            position: absolute;
            top: 38px;
            left: 60%;
            right: -20%;
            height: 3px;
            background: linear-gradient(to right, var(--accent), var(--border-color));
            z-index: 1;
            opacity: 0.4;
        }
        .process-step:last-child .step-line {
            display: none;
        }
        .process-step h5 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--text-muted);
            max-width: 200px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--bg-light);
        }
        .faq-accordion .accordion-button {
            background: var(--bg-white);
            color: var(--text-dark);
            font-weight: 600;
            font-size: 1rem;
            padding: 18px 24px;
            border: none;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--accent-light);
            color: var(--primary-dark);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--accent);
        }
        .faq-accordion .accordion-button::after {
            background-size: 1rem;
            transition: var(--transition);
        }
        .faq-accordion .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
            background: var(--bg-white);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
            position: relative;
            overflow: hidden;
            padding: 70px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 14px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-btn-primary {
            background: var(--accent);
            border: none;
            border-radius: 40px;
            padding: 14px 40px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--primary-dark);
            box-shadow: 0 8px 30px rgba(246, 166, 35, 0.30);
            transition: var(--transition);
        }
        .cta-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(246, 166, 35, 0.45);
            color: var(--primary-dark);
        }
        .cta-btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.30);
            border-radius: 40px;
            padding: 12px 36px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .cta-btn-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.50);
            color: var(--text-light);
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
            position: relative;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 14px;
        }
        .site-footer .footer-brand .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            border-radius: 10px;
            color: var(--accent);
            font-size: 1rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.20);
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer .footer-heading {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer .footer-heading::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 10px;
            font-size: 0.9rem;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-links i {
            width: 20px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.40);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.50);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199px) {
            .page-banner h1 {
                font-size: 2.6rem;
            }
            .section-title {
                font-size: 1.9rem;
            }
            .stat-block .stat-number {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 991px) {
            :root {
                --header-height: 64px;
            }
            .site-header .navbar-brand {
                font-size: 1.3rem;
            }
            .navbar-nav .nav-link {
                padding: 10px 16px;
                font-size: 0.95rem;
            }
            .navbar-nav .nav-link.active::after {
                bottom: 4px;
            }
            .page-banner {
                min-height: 320px;
                padding: 50px 0 40px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .page-banner .lead {
                font-size: 1rem;
            }
            .page-banner .banner-stats {
                gap: 24px;
            }
            .page-banner .banner-stats .stat-number {
                font-size: 1.6rem;
            }
            .section-padding {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .intro-image-wrap {
                margin-bottom: 30px;
            }
            .stat-block .stat-number {
                font-size: 2rem;
            }
            .process-step .step-line {
                display: none;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .navbar-collapse {
                background: var(--bg-white);
                padding: 16px 12px;
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                margin-top: 8px;
                border: 1px solid var(--border-light);
            }
            .search-form.d-none.d-lg-block {
                display: none !important;
            }
            .nav-cta-btn {
                padding: 8px 20px;
                font-size: 0.85rem;
            }
            .site-footer .footer-brand {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 767px) {
            :root {
                --header-height: 60px;
            }
            .site-header .navbar-brand {
                font-size: 1.15rem;
            }
            .site-header .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .page-banner {
                min-height: 270px;
                padding: 40px 0 32px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner .lead {
                font-size: 0.92rem;
                max-width: 100%;
            }
            .page-banner .banner-stats {
                gap: 16px;
                flex-direction: row;
                flex-wrap: wrap;
                justify-content: center;
            }
            .page-banner .banner-stats .stat-number {
                font-size: 1.4rem;
            }
            .page-banner .banner-stats .stat-label {
                font-size: 0.75rem;
            }
            .section-padding {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.92rem;
                margin-bottom: 28px;
            }
            .intro-content .feature-list li {
                font-size: 0.9rem;
                padding: 8px 0;
            }
            .service-card .card-img {
                height: 160px;
            }
            .service-card .card-body {
                padding: 18px 16px 16px;
            }
            .service-card .card-body h5 {
                font-size: 1.05rem;
            }
            .advantage-item {
                padding: 24px 14px;
            }
            .advantage-item .adv-icon {
                width: 52px;
                height: 52px;
                font-size: 1.3rem;
            }
            .stat-block .stat-number {
                font-size: 1.8rem;
            }
            .stat-block .stat-icon {
                font-size: 1.6rem;
            }
            .faq-accordion .accordion-button {
                font-size: 0.92rem;
                padding: 14px 18px;
            }
            .faq-accordion .accordion-body {
                font-size: 0.88rem;
                padding: 0 18px 16px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.92rem;
            }
            .cta-btn-primary,
            .cta-btn-outline {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
            .site-footer {
                padding: 40px 0 0;
            }
            .site-footer .footer-brand {
                font-size: 1.1rem;
            }
            .site-footer .footer-heading {
                font-size: 0.95rem;
                margin-bottom: 14px;
            }
            .site-footer .footer-links li {
                font-size: 0.85rem;
            }
            .site-footer .footer-bottom {
                font-size: 0.78rem;
                margin-top: 24px;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner .banner-badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .page-banner .banner-stats {
                gap: 12px;
            }
            .page-banner .banner-stats .stat-number {
                font-size: 1.2rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .stat-block .stat-number {
                font-size: 1.5rem;
            }
            .cta-btn-group {
                flex-direction: column;
                align-items: center;
            }
            .cta-btn-primary,
            .cta-btn-outline {
                width: 100%;
                max-width: 280px;
                text-align: center;
            }
            .service-card .card-img {
                height: 140px;
            }
            .intro-image-wrap img {
                min-height: 200px;
            }
        }

        /* ===== A11y ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .form-control:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-light);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== 动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp 0.6s ease-out forwards;
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }