/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary: #0b1f3a;
            --primary-light: #16355e;
            --accent: #d4a537;
            --accent-light: #e8bc4a;
            --accent-dark: #b98a2d;
            --bg-body: #f4f6fb;
            --bg-white: #ffffff;
            --bg-dark: #0b1f3a;
            --bg-soft: #eef1f7;
            --text-main: #16233a;
            --text-muted: #5a6a7a;
            --border: #e3e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(11, 31, 58, 0.06);
            --shadow-md: 0 6px 24px rgba(11, 31, 58, 0.08);
            --shadow-lg: 0 16px 48px rgba(11, 31, 58, 0.14);
            --transition: all 0.3s ease;
        }

        /* ========== 基础 Reset & Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary);
        }
        p {
            margin-bottom: 0;
        }

        :focus-visible {
            outline: 3px solid rgba(212, 165, 55, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* ========== 导航栏 ========== */
        .custom-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1080;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(227, 232, 240, 0.9);
            padding: 0;
            transition: var(--transition);
        }
        .custom-navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 70px;
        }
        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 4px 0;
            font-size: 1.15rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--primary);
        }
        .custom-navbar .brand-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border-radius: 12px;
            font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(11, 31, 58, 0.2);
        }
        .custom-navbar .brand-text {
            white-space: nowrap;
        }
        .custom-navbar .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 6px 10px;
            color: var(--primary);
            background: var(--bg-white);
        }
        .custom-navbar .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(212, 165, 55, 0.3);
        }
        .custom-navbar .navbar-collapse {
            flex-grow: 0;
            gap: 24px;
        }
        .custom-navbar .navbar-nav {
            gap: 4px;
        }
        .custom-navbar .nav-link {
            padding: 10px 18px;
            font-weight: 500;
            color: var(--text-main);
            border-radius: var(--radius-sm);
            position: relative;
            font-size: 0.95rem;
        }
        .custom-navbar .nav-link:hover {
            color: var(--accent-dark);
            background: rgba(212, 165, 55, 0.08);
        }
        .custom-navbar .nav-link.active {
            color: var(--accent-dark);
            background: rgba(212, 165, 55, 0.1);
            font-weight: 600;
        }
        .custom-navbar .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: 20px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 4px 4px 4px 14px;
            transition: var(--transition);
            width: 200px;
        }
        .search-box:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(212, 165, 55, 0.15);
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 0.85rem;
            color: var(--text-main);
            padding: 6px 0;
            min-width: 0;
        }
        .search-box input::placeholder {
            color: #9aa7b8;
        }
        .search-box button {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.75rem;
        }
        .search-box button:hover {
            background: var(--accent);
        }
        .btn-outline-nav {
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-outline-nav:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary-nav {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            padding: 8px 22px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 700;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(212, 165, 55, 0.35);
        }
        .btn-primary-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 165, 55, 0.45);
            color: #fff;
        }

        /* ========== Hero 首屏 ========== */
        .hero {
            position: relative;
            min-height: 680px;
            display: flex;
            align-items: center;
            padding: 140px 0 100px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 31, 58, 0.94) 0%, rgba(18, 55, 99, 0.82) 55%, rgba(11, 31, 58, 0.75) 100%);
        }
        .hero::after {
            content: '';
            position: absolute;
            right: -10%;
            bottom: -20%;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 165, 55, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 680px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 22px;
        }
        .hero h1 {
            color: #fff;
            font-size: clamp(2.2rem, 5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }
        .hero h1 .text-accent {
            color: var(--accent-light);
        }
        .hero-desc {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 540px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 44px;
        }
        .hero-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            padding: 13px 32px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: 0 6px 24px rgba(212, 165, 55, 0.4);
            transition: var(--transition);
        }
        .hero-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(212, 165, 55, 0.5);
            color: #fff;
        }
        .hero-btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            padding: 13px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.08);
        }
        .hero-btn-secondary:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.8);
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 28px;
        }
        .stats-item {
            padding-right: 28px;
            border-right: 1px solid rgba(255, 255, 255, 0.12);
        }
        .stats-item:last-child {
            border-right: none;
            padding-right: 0;
        }
        .stats-item .num {
            color: var(--accent-light);
            font-size: 1.7rem;
            font-weight: 800;
            line-height: 1.2;
        }
        .stats-item .label {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.82rem;
            margin-top: 4px;
        }

        /* ========== 核心优势 ========== */
        .section {
            padding: 88px 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 52px;
        }
        .section-tag {
            display: inline-block;
            background: rgba(212, 165, 55, 0.12);
            color: var(--accent-dark);
            padding: 5px 18px;
            border-radius: 30px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 14px;
        }
        .section-header h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.7;
        }
        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(212, 165, 55, 0.3);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 22px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 6px 20px rgba(11, 31, 58, 0.2);
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ========== 分类入口 ========== */
        .category-section {
            background: var(--bg-soft);
            padding: 88px 0;
        }
        .category-card {
            display: flex;
            flex-direction: row;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            height: 100%;
            border: 1px solid var(--border);
        }
        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(212, 165, 55, 0.25);
        }
        .category-img {
            flex: 0 0 45%;
            position: relative;
            min-height: 220px;
            overflow: hidden;
        }
        .category-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            transition: transform 0.5s ease;
        }
        .category-card:hover .category-img img {
            transform: scale(1.06);
        }
        .category-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(11, 31, 58, 0.45));
        }
        .category-body {
            flex: 1;
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .category-badge {
            display: inline-block;
            background: rgba(212, 165, 55, 0.15);
            color: var(--accent-dark);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 700;
            width: fit-content;
            margin-bottom: 12px;
        }
        .category-body h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .category-body p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-dark);
            font-weight: 700;
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .category-link i {
            transition: transform 0.3s ease;
        }
        .category-card:hover .category-link i {
            transform: translateX(4px);
        }

        /* ========== 最新资讯 ========== */
        .latest-section {
            padding: 88px 0;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px 30px;
            transition: var(--transition);
            display: flex;
            gap: 20px;
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(212, 165, 55, 0.25);
            transform: translateY(-2px);
        }
        .news-card-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(212, 165, 55, 0.12);
            color: var(--accent-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .news-card-body {
            flex: 1;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .news-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 600;
        }
        .news-date {
            color: var(--text-muted);
            font-size: 0.8rem;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-card h3 a {
            color: var(--primary);
        }
        .news-card h3 a:hover {
            color: var(--accent-dark);
        }
        .news-card-body > p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .empty-tip {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .empty-tip i {
            font-size: 2.2rem;
            color: #c0cbd9;
            margin-bottom: 14px;
            display: block;
        }

        /* 侧边栏 */
        .sidebar-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px;
            margin-bottom: 20px;
        }
        .sidebar-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--accent);
        }
        .sidebar-list li {
            margin-bottom: 12px;
        }
        .sidebar-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.88rem;
            color: var(--text-main);
            transition: var(--transition);
        }
        .sidebar-list a:hover {
            color: var(--accent-dark);
            padding-left: 4px;
        }
        .sidebar-list a i {
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* ========== 使用流程 ========== */
        .steps-section {
            padding: 88px 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .steps-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 165, 55, 0.12) 0%, transparent 70%);
        }
        .steps-section .section-tag {
            background: rgba(212, 165, 55, 0.2);
            color: var(--accent-light);
        }
        .steps-section .section-header h2 {
            color: #fff;
        }
        .steps-section .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }
        .step-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            height: 100%;
            position: relative;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .step-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            border-color: rgba(212, 165, 55, 0.3);
        }
        .step-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: rgba(212, 165, 55, 0.8);
            margin-bottom: 16px;
            line-height: 1;
        }
        .step-card h3 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.88rem;
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 88px 0;
        }
        .faq-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 30px;
            margin-bottom: 14px;
            transition: var(--transition);
        }
        .faq-card:hover {
            border-color: rgba(212, 165, 55, 0.3);
            box-shadow: var(--shadow-sm);
        }
        .faq-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
        }
        .faq-card h3 i {
            color: var(--accent);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
            padding-left: 26px;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 70px 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 31, 58, 0.95), rgba(18, 55, 99, 0.85));
        }
        .cta-wrapper {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-wrapper h2 {
            color: #fff;
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-wrapper p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 30px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            padding: 15px 38px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 8px 30px rgba(212, 165, 55, 0.45);
            transition: var(--transition);
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(212, 165, 55, 0.55);
            color: #fff;
        }
        .cta-btn i {
            font-size: 0.9rem;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 30px;
        }
        .footer-top {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 40px;
            padding-bottom: 46px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 28px;
        }
        .footer-brand {
            max-width: 320px;
        }
        .footer-brand .footer-logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .footer-logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.98rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent-light);
            padding-left: 3px;
        }
        .footer-bottom {
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
            padding-top: 20px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991px) {
            .custom-navbar .container {
                min-height: 62px;
            }
            .custom-navbar .navbar-collapse {
                background: var(--bg-white);
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                padding: 18px 20px;
                margin-top: 10px;
            }
            .custom-navbar .navbar-nav {
                gap: 0;
                margin-bottom: 16px;
            }
            .custom-navbar .nav-link {
                padding: 12px 16px;
            }
            .custom-navbar .nav-link.active::after {
                display: none;
            }
            .nav-actions {
                margin-left: 0;
                flex-wrap: wrap;
                gap: 8px;
            }
            .search-box {
                width: 100%;
                margin-bottom: 8px;
            }
            .hero {
                min-height: 580px;
                padding: 120px 0 70px;
            }
            .hero-stats {
                gap: 16px;
            }
            .stats-item {
                padding-right: 12px;
            }
            .features-grid .col-md-6,
            .features-grid .col-lg-3 {
                margin-bottom: 20px;
            }
            .category-card {
                flex-direction: column;
            }
            .category-img {
                flex: none;
                height: 200px;
                min-height: auto;
                position: relative;
            }
            .category-img img {
                position: absolute;
            }
            .category-body {
                padding: 24px;
            }
            .news-card {
                padding: 22px;
            }
        }

        @media (max-width: 767px) {
            body {
                font-size: 14px;
            }
            .section {
                padding: 60px 0;
            }
            .category-section,
            .latest-section,
            .steps-section,
            .faq-section {
                padding: 60px 0;
            }
            .hero {
                min-height: 520px;
                padding: 100px 0 50px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.93rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-btn-primary,
            .hero-btn-secondary {
                justify-content: center;
            }
            .hero-stats {
                gap: 10px;
            }
            .stats-item .num {
                font-size: 1.3rem;
            }
            .stats-item .label {
                font-size: 0.75rem;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .feature-card {
                margin-bottom: 16px;
            }
            .category-card {
                margin-bottom: 20px;
            }
            .news-card {
                flex-direction: column;
                gap: 12px;
                padding: 18px;
            }
            .news-card-icon {
                width: 40px;
                height: 40px;
                font-size: 0.9rem;
            }
            .faq-card {
                padding: 18px 20px;
            }
            .footer-top {
                flex-direction: column;
                gap: 28px;
            }
            .cta-section {
                padding: 55px 0;
            }
            .cta-btn {
                padding: 13px 28px;
                font-size: 0.92rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .custom-navbar .brand-text {
                font-size: 0.98rem;
            }
            .custom-navbar .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }
            .hero h1 {
                font-size: 1.55rem;
            }
            .hero-description {
                font-size: 0.88rem;
            }
            .hero-stats {
                flex-direction: column;
                gap: 0;
            }
            .stats-item {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                padding: 12px 0;
                display: flex;
                align-items: baseline;
                gap: 10px;
            }
            .stats-item:last-child {
                border-bottom: none;
            }
            .stats-item .num {
                font-size: 1.1rem;
            }
            .stats-item .label {
                font-size: 0.78rem;
                margin-top: 0;
            }
            .category-body {
                padding: 20px;
            }
            .category-img {
                height: 170px;
            }
            .btn-outline-nav,
            .btn-primary-nav {
                padding: 7px 16px;
                font-size: 0.8rem;
            }
            .search-box {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
            --primary-900: #0f2137;
            --primary-800: #142b47;
            --primary-700: #1a3a5c;
            --primary-600: #24507c;
            --primary-100: #e8edf3;
            --accent-500: #e8a33d;
            --accent-600: #d4922a;
            --accent-50: #fdf4e6;
            --neutral-white: #ffffff;
            --neutral-50: #f7f8fa;
            --neutral-100: #eef0f3;
            --neutral-200: #e2e5ea;
            --neutral-300: #cdd3db;
            --neutral-500: #7a8699;
            --neutral-700: #3f4a5a;
            --neutral-900: #1e293b;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-xs: 0 1px 3px rgba(15, 33, 55, 0.05);
            --shadow-sm: 0 2px 8px rgba(15, 33, 55, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 33, 55, 0.09);
            --shadow-lg: 0 16px 40px rgba(15, 33, 55, 0.13);
            --transition: 0.3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--neutral-700);
            background: var(--neutral-50);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary-600);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-700);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
        }
        /* ===== Header / Nav ===== */
        .custom-navbar {
            background: var(--neutral-white);
            border-bottom: 1px solid var(--neutral-100);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-xs);
        }
        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: var(--primary-800);
            letter-spacing: -0.3px;
        }
        .custom-navbar .navbar-brand:hover {
            color: var(--primary-700);
        }
        .custom-navbar .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary-700), var(--primary-600));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            box-shadow: var(--shadow-sm);
        }
        .custom-navbar .navbar-toggler {
            border: none;
            color: var(--primary-700);
            font-size: 22px;
            padding: 4px 8px;
            background: var(--neutral-50);
            border-radius: 8px;
        }
        .custom-navbar .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.15);
        }
        .custom-navbar .navbar-nav .nav-link {
            font-weight: 600;
            color: var(--neutral-700);
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 15px;
            transition: var(--transition);
            position: relative;
        }
        .custom-navbar .navbar-nav .nav-link:hover {
            color: var(--primary-600);
            background: var(--neutral-50);
        }
        .custom-navbar .navbar-nav .nav-link.active {
            color: var(--primary-700);
            background: var(--primary-100);
            font-weight: 700;
        }
        .custom-navbar .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--neutral-50);
            border: 1px solid var(--neutral-200);
            border-radius: 24px;
            padding: 4px 6px 4px 14px;
            width: 190px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary-600);
            box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.1);
            background: #fff;
        }
        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 13px;
            width: 100%;
            color: var(--neutral-900);
        }
        .search-box input::placeholder {
            color: var(--neutral-500);
        }
        .search-box button {
            border: none;
            background: var(--primary-700);
            color: #fff;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--primary-600);
        }
        .btn-outline-nav {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-700);
            border: 1.5px solid var(--primary-700);
            border-radius: 24px;
            padding: 6px 16px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-outline-nav:hover {
            background: var(--primary-700);
            color: #fff;
        }
        .btn-primary-nav {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
            border-radius: 24px;
            padding: 6px 18px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-primary-nav:hover {
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            color: #fff;
            filter: brightness(1.04);
        }
        /* ===== Article Banner ===== */
        .article-banner {
            background-image: linear-gradient(135deg, rgba(15, 33, 55, 0.92), rgba(26, 58, 92, 0.82)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 64px 0;
            position: relative;
            color: #fff;
        }
        .article-banner .breadcrumb {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 18px;
            display: flex;
            gap: 6px;
            align-items: center;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .article-banner .breadcrumb a:hover {
            color: var(--accent-500);
        }
        .article-banner .breadcrumb .sep {
            opacity: 0.5;
        }
        .article-banner h1 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
            max-width: 800px;
            letter-spacing: -0.5px;
        }
        .article-banner .banner-meta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
            font-size: 14px;
        }
        .article-banner .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.14);
            padding: 5px 14px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
            font-weight: 500;
        }
        .article-banner .banner-meta i {
            color: var(--accent-500);
        }
        /* ===== Article Main ===== */
        .article-section {
            padding: 56px 0 72px;
        }
        .article-card {
            background: var(--neutral-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            border: 1px solid var(--neutral-100);
            transition: var(--transition);
        }
        .article-card .article-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--neutral-700);
        }
        .article-card .article-body h2,
        .article-card .article-body h3 {
            margin-top: 32px;
            margin-bottom: 14px;
            color: var(--neutral-900);
            font-weight: 700;
        }
        .article-card .article-body p {
            margin-bottom: 18px;
        }
        .article-card .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
        }
        .article-card .article-body ul,
        .article-card .article-body ol {
            padding-left: 22px;
            margin-bottom: 18px;
        }
        .article-card .article-body blockquote {
            border-left: 4px solid var(--accent-500);
            background: var(--accent-50);
            padding: 14px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 22px 0;
            color: var(--neutral-700);
        }
        .article-card .article-body a {
            color: var(--primary-600);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .not-found-box {
            text-align: center;
            padding: 60px 30px;
        }
        .not-found-box .nf-icon {
            font-size: 56px;
            color: var(--neutral-300);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--neutral-900);
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--neutral-500);
            margin-bottom: 24px;
        }
        .not-found-box .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-700);
            color: #fff;
            border-radius: 24px;
            padding: 10px 28px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
        }
        .not-found-box .btn-home:hover {
            background: var(--primary-600);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            color: #fff;
        }
        /* ===== Sidebar ===== */
        .sidebar-widget {
            background: var(--neutral-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--neutral-100);
            padding: 26px;
            margin-bottom: 24px;
            transition: var(--transition);
        }
        .sidebar-widget:hover {
            box-shadow: var(--shadow-md);
        }
        .sidebar-widget .widget-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--neutral-900);
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }
        .sidebar-widget .widget-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 36px;
            height: 3px;
            background: var(--accent-500);
            border-radius: 2px;
        }
        .sidebar-widget .widget-intro {
            font-size: 14px;
            color: var(--neutral-500);
            line-height: 1.7;
        }
        .sidebar-widget .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-widget .tag-item {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary-700);
            background: var(--primary-100);
            padding: 5px 12px;
            border-radius: 16px;
            transition: var(--transition);
        }
        .sidebar-widget .tag-item:hover {
            background: var(--primary-700);
            color: #fff;
            transform: translateY(-1px);
        }
        .sidebar-widget .help-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-widget .help-list li {
            padding: 8px 0;
            border-bottom: 1px dashed var(--neutral-200);
            font-size: 14px;
            color: var(--neutral-700);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-widget .help-list li:last-child {
            border-bottom: none;
        }
        .sidebar-widget .help-list li i {
            color: var(--accent-500);
            font-size: 13px;
            width: 16px;
            text-align: center;
        }
        .sidebar-widget .help-list a {
            color: var(--neutral-700);
            font-weight: 500;
        }
        .sidebar-widget .help-list a:hover {
            color: var(--primary-600);
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary-800), var(--primary-600));
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-md);
            border: none;
        }
        .sidebar-cta h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .sidebar-cta p {
            font-size: 14px;
            opacity: 0.85;
            margin-bottom: 18px;
        }
        .sidebar-cta .btn-light-accent {
            background: var(--accent-500);
            color: var(--primary-900);
            border-radius: 24px;
            padding: 8px 22px;
            font-weight: 700;
            font-size: 14px;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .sidebar-cta .btn-light-accent:hover {
            background: var(--accent-600);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            color: var(--primary-900);
        }
        /* ===== Related Cards ===== */
        .related-section {
            background: var(--neutral-white);
            padding: 64px 0;
            border-top: 1px solid var(--neutral-100);
        }
        .related-section .section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--neutral-900);
            margin-bottom: 8px;
        }
        .related-section .section-sub {
            color: var(--neutral-500);
            margin-bottom: 36px;
        }
        .related-card {
            background: var(--neutral-50);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--neutral-100);
            transition: var(--transition);
            height: 100%;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--neutral-200);
        }
        .related-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--neutral-200);
        }
        .related-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 22px;
        }
        .related-card .card-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--neutral-900);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--neutral-500);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .related-card .card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-600);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .related-card .card-link:hover {
            color: var(--primary-700);
            gap: 8px;
        }
        /* ===== Guide Steps ===== */
        .guide-section {
            padding: 64px 0;
            background: var(--neutral-50);
        }
        .guide-section .section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--neutral-900);
            margin-bottom: 8px;
        }
        .guide-section .section-sub {
            color: var(--neutral-500);
            margin-bottom: 40px;
        }
        .step-card {
            text-align: center;
            padding: 32px 24px;
            background: var(--neutral-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--neutral-100);
            box-shadow: var(--shadow-xs);
            transition: var(--transition);
            height: 100%;
        }
        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary-700), var(--primary-600));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            margin: 0 auto 18px;
            box-shadow: var(--shadow-sm);
        }
        .step-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--neutral-900);
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--neutral-500);
            line-height: 1.6;
            margin-bottom: 0;
        }
        /* ===== FAQ ===== */
        .faq-section {
            padding: 64px 0;
            background: var(--neutral-white);
        }
        .faq-section .section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--neutral-900);
            margin-bottom: 8px;
        }
        .faq-section .section-sub {
            color: var(--neutral-500);
            margin-bottom: 40px;
        }
        .faq-accordion .accordion-item {
            border: 1px solid var(--neutral-100);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-xs);
        }
        .faq-accordion .accordion-button {
            padding: 16px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--neutral-900);
            background: var(--neutral-white);
            border: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--primary-100);
            color: var(--primary-800);
            box-shadow: inset 0 -1px 0 var(--neutral-100);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.1);
        }
        .faq-accordion .accordion-body {
            padding: 18px 20px;
            font-size: 15px;
            color: var(--neutral-700);
            line-height: 1.7;
        }
        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0;
            background-image: linear-gradient(135deg, rgba(15, 33, 55, 0.94), rgba(26, 58, 92, 0.86)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 16px;
            opacity: 0.85;
            max-width: 560px;
            margin: 0 auto 30px;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-cta-primary {
            background: var(--accent-500);
            color: var(--primary-900);
            border-radius: 28px;
            padding: 12px 32px;
            font-weight: 700;
            font-size: 15px;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            box-shadow: var(--shadow-md);
        }
        .btn-cta-primary:hover {
            background: var(--accent-600);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: var(--primary-900);
        }
        .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.65);
            border-radius: 28px;
            padding: 10px 30px;
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: translateY(-2px);
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-900);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
        }
        .site-footer .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 40px;
        }
        .site-footer .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer .footer-logo i {
            color: var(--accent-500);
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--accent-500);
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 9px;
        }
        .site-footer .footer-col ul a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .site-footer .footer-col ul a:hover {
            color: var(--accent-500);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 18px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .site-footer .footer-bottom p {
            margin: 0;
        }
        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .article-section {
                padding: 40px 0 56px;
            }
            .article-card {
                padding: 28px 24px;
                margin-bottom: 32px;
            }
            .article-banner h1 {
                font-size: 28px;
            }
            .sidebar-widget {
                padding: 20px;
            }
            .related-card .card-body {
                padding: 18px;
            }
            .step-card {
                margin-bottom: 20px;
            }
            .faq-accordion .accordion-button {
                font-size: 15px;
                padding: 14px 16px;
            }
            .site-footer .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .custom-navbar .nav-actions {
                margin-top: 10px;
                flex-wrap: wrap;
            }
            .custom-navbar .search-box {
                width: 100%;
                margin-bottom: 8px;
            }
        }
        @media (max-width: 768px) {
            .article-banner {
                padding: 44px 0;
            }
            .article-banner h1 {
                font-size: 24px;
            }
            .article-card {
                padding: 22px 18px;
                border-radius: var(--radius-md);
            }
            .article-section {
                padding: 28px 0 44px;
            }
            .related-section,
            .guide-section,
            .faq-section {
                padding: 48px 0;
            }
            .related-section .section-title,
            .guide-section .section-title,
            .faq-section .section-title {
                font-size: 23px;
            }
            .cta-section {
                padding: 52px 0;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-cta-primary,
            .btn-cta-outline {
                width: 100%;
                justify-content: center;
            }
            .site-footer .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 44px 0 0;
            }
            .site-footer .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .article-banner h1 {
                font-size: 20px;
            }
            .article-banner .banner-meta {
                gap: 8px;
            }
            .article-banner .banner-meta span {
                padding: 4px 10px;
                font-size: 12px;
            }
            .article-card .article-body {
                font-size: 15px;
            }
            .sidebar-widget {
                padding: 18px;
                margin-bottom: 18px;
            }
            .step-card {
                padding: 24px 16px;
            }
            .step-card h4 {
                font-size: 15px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0f2a43;
            --primary-light: #1a4166;
            --primary-dark: #091c30;
            --secondary: #0ea5a4;
            --secondary-light: #14b8b7;
            --accent: #e0a83c;
            --accent-light: #f2c562;
            --bg: #f4f7fb;
            --bg-white: #ffffff;
            --bg-deep: #0d1f33;
            --text: #1c2b3a;
            --text-light: #5e7186;
            --text-lighter: #93a6ba;
            --border: #e3e9f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(15, 42, 67, .06);
            --shadow: 0 10px 30px rgba(15, 42, 67, .08);
            --shadow-lg: 0 20px 50px rgba(15, 42, 67, .14);
            --transition: all .3s ease;
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        button,
        input {
            font-family: var(--font);
        }

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

        /* ===== 导航 ===== */
        .custom-navbar {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(15, 42, 67, .04);
            padding: 10px 0;
            transition: var(--transition);
        }

        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--primary) !important;
            letter-spacing: -0.3px;
        }

        .custom-navbar .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 6px 16px rgba(14, 165, 164, .25);
        }

        .custom-navbar .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--text);
            padding: 8px 16px !important;
            border-radius: 10px;
            margin: 0 3px;
            transition: var(--transition);
            font-size: 15px;
        }

        .custom-navbar .navbar-nav .nav-link:hover {
            color: var(--primary);
            background: rgba(15, 42, 67, .06);
        }

        .custom-navbar .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(15, 42, 67, .08);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 10px;
            overflow: hidden;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(14, 165, 164, .12);
        }

        .search-box input {
            border: none;
            background: transparent;
            padding: 8px 12px;
            width: 170px;
            font-size: 14px;
            outline: none;
            color: var(--text);
        }

        .search-box input::placeholder {
            color: var(--text-lighter);
        }

        .search-box button {
            border: none;
            background: transparent;
            padding: 8px 12px;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
        }

        .search-box button:hover {
            color: var(--primary);
        }

        .btn-outline-nav {
            padding: 8px 20px;
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--text);
            font-weight: 500;
            font-size: 14px;
            text-decoration: none;
            background: transparent;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .btn-outline-nav:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(15, 42, 67, .04);
        }

        .btn-primary-nav {
            padding: 8px 22px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-weight: 500;
            font-size: 14px;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(15, 42, 67, .25);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .btn-primary-nav:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(15, 42, 67, .35);
            color: #fff;
        }

        .custom-navbar .navbar-toggler {
            border: none;
            color: var(--primary);
            font-size: 20px;
            padding: 6px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .custom-navbar .navbar-toggler:hover {
            background: rgba(15, 42, 67, .06);
        }

        .custom-navbar .navbar-toggler:focus {
            box-shadow: none;
        }

        /* ===== Hero ===== */
        .category-hero {
            padding: 90px 0 80px;
            background: linear-gradient(135deg, rgba(9, 28, 48, .92), rgba(15, 42, 67, .78)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            position: relative;
        }

        .category-hero .breadcrumb {
            background: transparent;
            margin-bottom: 18px;
            padding: 0;
        }

        .category-hero .breadcrumb-item {
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
        }

        .category-hero .breadcrumb-item a {
            color: rgba(255, 255, 255, .7);
            transition: var(--transition);
        }

        .category-hero .breadcrumb-item a:hover {
            color: var(--accent-light);
        }

        .category-hero .breadcrumb-item.active {
            color: rgba(255, 255, 255, .9);
        }

        .category-hero .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, .5);
        }

        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .category-hero p {
            font-size: 17px;
            color: rgba(255, 255, 255, .85);
            max-width: 660px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

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

        .hero-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--accent);
            color: #0f2a43;
            font-weight: 700;
            font-size: 15px;
            border-radius: 12px;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(224, 168, 60, .35);
        }

        .hero-btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(224, 168, 60, .4);
            color: #0f2a43;
        }

        .hero-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .3);
            color: #fff;
            font-weight: 500;
            font-size: 15px;
            border-radius: 12px;
            text-decoration: none;
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }

        .hero-btn-outline:hover {
            background: rgba(255, 255, 255, .2);
            border-color: rgba(255, 255, 255, .5);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 80px 0;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(14, 165, 164, .1);
            color: var(--secondary);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: .5px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            color: var(--text-light);
            font-size: 16px;
            margin-bottom: 40px;
            max-width: 640px;
        }

        /* ===== 步骤卡片 ===== */
        .step-card {
            position: relative;
            text-align: center;
            padding: 40px 28px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: var(--transition);
        }

        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: var(--secondary);
        }

        .step-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 8px 20px rgba(14, 165, 164, .25);
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .step-card p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== 地址表格 ===== */
        .entry-table-wrap {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            overflow: hidden;
        }

        .entry-table-wrap .table {
            margin-bottom: 0;
        }

        .entry-table-wrap thead th {
            background: var(--bg);
            font-weight: 600;
            color: var(--text);
            border-bottom: 1px solid var(--border);
            padding: 15px 20px;
            font-size: 14px;
            white-space: nowrap;
        }

        .entry-table-wrap tbody td {
            padding: 18px 20px;
            border-bottom: 1px solid var(--border);
            color: var(--text);
            vertical-align: middle;
            font-size: 15px;
        }

        .entry-table-wrap tbody tr:last-child td {
            border-bottom: none;
        }

        .entry-table-wrap tbody tr {
            transition: var(--transition);
        }

        .entry-table-wrap tbody tr:hover {
            background: rgba(15, 42, 67, .02);
        }

        .status-badge {
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .status-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            display: inline-block;
        }

        .status-badge.running {
            background: rgba(14, 165, 164, .1);
            color: #0d9488;
        }

        .status-badge.running::before {
            background: #0d9488;
        }

        .status-badge.updating {
            background: rgba(224, 168, 60, .1);
            color: #b45309;
        }

        .status-badge.updating::before {
            background: #b45309;
        }

        /* ===== 访问指南 ===== */
        .access-guide-section {
            background: var(--bg-white);
        }

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

        .guide-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 380px;
        }

        .guide-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 42, 67, .06), transparent 60%);
        }

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

        .feature-list li {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .feature-list li:last-child {
            border-bottom: none;
        }

        .feature-list li:hover {
            padding-left: 6px;
        }

        .feature-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(14, 165, 164, .1);
            color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .feature-list h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .feature-list p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 知识卡片 ===== */
        .knowledge-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px;
            height: 100%;
            transition: var(--transition);
            position: relative;
        }

        .knowledge-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--secondary);
        }

        .knowledge-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 20px;
            box-shadow: 0 8px 20px rgba(15, 42, 67, .18);
        }

        .knowledge-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .knowledge-card p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .knowledge-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-lighter);
            padding-top: 16px;
            border-top: 1px solid var(--border);
        }

        .knowledge-card .card-meta a {
            color: var(--secondary);
            font-weight: 600;
        }

        .knowledge-card .card-meta a:hover {
            color: var(--primary);
        }

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

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px 30px;
            margin-bottom: 16px;
            transition: var(--transition);
        }

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

        .faq-question {
            font-weight: 600;
            font-size: 17px;
            color: var(--text);
            margin-bottom: 10px;
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }

        .faq-question i {
            color: var(--secondary);
            margin-top: 5px;
            font-size: 16px;
        }

        .faq-answer {
            color: var(--text-light);
            padding-left: 28px;
            font-size: 15px;
            line-height: 1.8;
        }

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

        .cta-box {
            background: linear-gradient(135deg, rgba(9, 28, 48, .94), rgba(14, 165, 164, .82)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 70px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-box h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-box p {
            font-size: 17px;
            color: rgba(255, 255, 255, .85);
            max-width: 600px;
            margin: 0 auto 36px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: var(--accent);
            color: #0f2a43;
            font-weight: 700;
            font-size: 15px;
            border-radius: 12px;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(224, 168, 60, .35);
        }

        .btn-cta-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            color: #0f2a43;
        }

        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .3);
            border-radius: 12px;
            color: #fff;
            font-weight: 500;
            text-decoration: none;
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }

        .btn-cta-outline:hover {
            background: rgba(255, 255, 255, .2);
            border-color: rgba(255, 255, 255, .5);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            color: #a3b3c4;
            padding-top: 60px;
            padding-bottom: 24px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand .footer-logo i {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
            margin-bottom: 0;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: #a3b3c4;
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .footer-bottom {
            padding-top: 24px;
            text-align: center;
            font-size: 14px;
            color: #7a8fa3;
        }

        .footer-bottom p {
            margin-bottom: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .custom-navbar .navbar-collapse {
                background: var(--bg-white);
                padding: 20px;
                border-radius: var(--radius);
                box-shadow: var(--shadow-lg);
                margin-top: 12px;
                border: 1px solid var(--border);
            }

            .custom-navbar .navbar-nav .nav-link {
                padding: 10px 14px !important;
                border-radius: 8px;
            }

            .nav-actions {
                flex-direction: column;
                align-items: stretch;
                margin-top: 14px;
                padding-top: 16px;
                border-top: 1px solid var(--border);
            }

            .search-box {
                width: 100%;
            }

            .search-box input {
                width: 100%;
            }

            .search-box button {
                padding-right: 16px;
            }

            .btn-outline-nav,
            .btn-primary-nav {
                justify-content: center;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 60px 0;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .category-hero p {
                font-size: 15px;
            }

            .section-padding {
                padding: 60px 0;
            }

            .section-title {
                font-size: 26px;
            }

            .section-subtitle {
                font-size: 15px;
            }

            .step-card {
                padding: 30px 22px;
            }

            .guide-media img {
                min-height: 280px;
            }

            .cta-box {
                padding: 48px 24px;
            }

            .cta-box h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .hero-btn-group {
                flex-direction: column;
                width: 100%;
            }

            .hero-btn-primary,
            .hero-btn-outline {
                justify-content: center;
                width: 100%;
            }

            .entry-table-wrap {
                overflow-x: auto;
            }

            .entry-table-wrap .table {
                min-width: 560px;
            }

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

            .faq-item {
                padding: 20px;
            }

            .faq-answer {
                padding-left: 0;
            }
        }