/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #eff6ff;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-page: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 50px rgba(0, 0, 0, 0.12);
            --spacing-section: 5rem;
            --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-base);
            background: var(--bg-page);
            color: var(--text-dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
        }
        .container {
            max-width: 1240px;
        }

        /* 导航 */
        .site-header {
            position: relative;
            z-index: 100;
            padding-top: 1rem;
        }
        .nav-panel {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(226, 232, 240, 0.7);
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.07);
            padding: 0.5rem 1.25rem;
            display: flex;
            align-items: center;
            min-height: 68px;
            transition: box-shadow 0.3s;
        }
        .nav-panel:hover {
            box-shadow: 0 14px 46px rgba(0, 0, 0, 0.1);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: 0.5px;
        }
        .navbar-brand i {
            font-size: 1.5rem;
            color: var(--accent);
        }
        .navbar-brand:hover {
            color: var(--primary-dark);
        }
        .navbar-nav .nav-item {
            margin: 0 0.15rem;
        }
        .nav-link {
            padding: 0.5rem 1.1rem !important;
            border-radius: 12px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-dark) !important;
            transition: all 0.3s ease;
        }
        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary) !important;
            transform: translateY(-1px);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff !important;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
        }
        .header-cta .btn {
            white-space: nowrap;
        }
        .navbar-toggler {
            border: none;
            padding: 0.4rem 0.6rem;
            background: var(--primary-light);
            border-radius: 10px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }

        /* 按钮 */
        .btn-accent {
            background: var(--accent);
            border: 2px solid var(--accent);
            color: #fff;
            font-weight: 700;
            border-radius: 50px;
            padding: 0.65rem 1.8rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
        }
        .btn-primary-custom {
            background: var(--primary);
            border: 2px solid var(--primary);
            color: #fff;
            font-weight: 700;
            border-radius: 50px;
            padding: 0.65rem 1.8rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
        }
        .btn-ghost {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.8);
            color: #fff;
            font-weight: 600;
            border-radius: 50px;
            padding: 0.65rem 1.8rem;
            transition: all 0.3s ease;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* Hero */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 130px 0 110px;
            color: #fff;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(15, 23, 42, 0.88) 0%, rgba(30, 64, 175, 0.68) 50%, rgba(37, 99, 235, 0.25) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 0.4rem 1rem;
            border-radius: 50px;
            backdrop-filter: blur(8px);
            margin-bottom: 1.2rem;
        }
        .hero-badge i {
            color: var(--accent);
        }
        .hero h1 {
            font-size: 3.4rem;
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 1rem;
            letter-spacing: 1px;
        }
        .hero .lead {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.5rem;
        }
        .hero-stats {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .hero-stats .stat {
            text-align: center;
            padding: 1rem 1.5rem;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            min-width: 120px;
            transition: background 0.3s;
        }
        .hero-stats .stat:hover {
            background: rgba(255, 255, 255, 0.18);
        }
        .hero-stats .stat strong {
            display: block;
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--accent);
        }
        .hero-stats .stat span {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            letter-spacing: 1px;
        }
        .hero-visual {
            position: relative;
        }
        .benefit-card {
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: 24px;
            backdrop-filter: blur(20px);
            padding: 2rem;
            color: #fff;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
        }
        .benefit-card .bc-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .benefit-card .bc-title i {
            color: var(--accent);
            font-size: 1.4rem;
        }
        .benefit-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .benefit-card ul li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.55rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.85);
        }
        .benefit-card ul li:last-child {
            border-bottom: none;
        }
        .benefit-card ul li i {
            color: #4ade80;
            font-size: 0.9rem;
        }

        /* 板块 */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 0.35rem 1.2rem;
            border-radius: 50px;
            margin-bottom: 0.8rem;
            letter-spacing: 1px;
        }
        .section-head h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .section-head p {
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
        }

        /* 优势卡片 */
        .advantage-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 2rem 1.5rem;
            text-align: center;
            height: 100%;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .advantage-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 20%;
            right: 20%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            opacity: 0;
            transition: opacity 0.35s;
        }
        .advantage-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(37, 99, 235, 0.2);
        }
        .advantage-card:hover::after {
            opacity: 1;
        }
        .advantage-card .icon-wrap {
            width: 72px;
            height: 72px;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin: 0 auto 1.2rem;
            transition: all 0.3s;
        }
        .advantage-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
            transform: scale(1.05);
        }
        .advantage-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .advantage-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* 分类卡片 */
        .cat-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            display: block;
            height: 100%;
            background: var(--bg-white);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 0.35s ease;
        }
        .cat-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .cat-card .cat-img {
            height: 210px;
            position: relative;
            overflow: hidden;
        }
        .cat-card .cat-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .cat-card:hover .cat-img img {
            transform: scale(1.08);
        }
        .cat-card .cat-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(15, 23, 42, 0.65));
        }
        .cat-card .cat-body {
            padding: 1.5rem 1.5rem 1.8rem;
            position: relative;
            z-index: 2;
        }
        .cat-card .cat-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 0.25rem 0.8rem;
            border-radius: 50px;
            margin-bottom: 0.8rem;
        }
        .cat-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .cat-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
            line-height: 1.6;
        }
        .cat-card .cat-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: gap 0.3s;
        }
        .cat-card .cat-link i {
            font-size: 0.8rem;
            transition: transform 0.3s;
        }
        .cat-card:hover .cat-link i {
            transform: translateX(4px);
        }

        /* 资讯卡片 */
        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 1.8rem 1.6rem;
            display: block;
            height: 100%;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: rgba(37, 99, 235, 0.2);
        }
        .news-card-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1rem;
        }
        .badge-cat {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 0.25rem 0.8rem;
            border-radius: 50px;
        }
        .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .news-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 0.6rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 3.2rem;
        }
        .news-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-read {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: gap 0.3s;
        }
        .news-read i {
            font-size: 0.75rem;
            transition: transform 0.3s;
        }
        .news-card:hover .news-read i {
            transform: translateX(4px);
        }

        /* 步骤 */
        .steps-section {
            background: var(--bg-dark);
            color: #fff;
        }
        .step-item {
            text-align: center;
            padding: 2rem 1.2rem;
            position: relative;
            height: 100%;
        }
        .step-item .step-num {
            width: 80px;
            height: 80px;
            border-radius: 26px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            font-weight: 800;
            margin: 0 auto 1.4rem;
            box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
            color: #fff;
        }
        .step-item h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .step-item p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 0;
        }
        .step-item:not(:last-child)::after {
            content: '\f054';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.25);
            font-size: 1rem;
            z-index: 5;
        }

        /* 为什么选择我们 */
        .why-section {
            background: var(--bg-white);
        }
        .why-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            height: 100%;
            min-height: 380px;
        }
        .why-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .why-content {
            padding-left: 1.5rem;
        }
        .why-content h2 {
            font-size: 2.1rem;
            font-weight: 800;
            margin-bottom: 0.6rem;
        }
        .why-content>p {
            color: var(--text-muted);
            margin-bottom: 1.8rem;
        }
        .why-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .why-list li {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1rem 0;
            border-bottom: 1px dashed var(--border);
            transition: background 0.3s;
        }
        .why-list li:last-child {
            border-bottom: none;
        }
        .why-list li:hover {
            background: rgba(37, 99, 235, 0.03);
        }
        .why-list .why-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        .why-list h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
        }
        .why-list p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: box-shadow 0.3s, border-color 0.3s;
        }
        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.4rem 1.8rem;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            gap: 1rem;
            transition: background 0.3s;
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            transition: transform 0.3s, background 0.3s, color 0.3s;
        }
        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            padding: 0 1.8rem 1.4rem;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .faq-answer p {
            margin-bottom: 0;
        }

        /* CTA */
        .cta-section {
            padding: 0 0 var(--spacing-section);
        }
        .cta-inner {
            position: relative;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-radius: 28px;
            padding: 4rem 3rem;
            text-align: center;
            color: #fff;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-inner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, 0.82), rgba(37, 99, 235, 0.6));
        }
        .cta-inner .container {
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            font-size: 2.3rem;
            font-weight: 800;
            margin-bottom: 0.8rem;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin: 0 auto 1.5rem;
        }
        .countdown {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }
        .countdown-item {
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 16px;
            padding: 0.8rem 1.2rem;
            min-width: 80px;
            backdrop-filter: blur(8px);
        }
        .countdown-item .cd-num {
            display: block;
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--accent);
        }
        .countdown-item .cd-label {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.75);
            letter-spacing: 2px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 1.5rem;
        }
        .footer-brand .navbar-brand {
            color: #fff;
            font-size: 1.5rem;
        }
        .footer-brand .navbar-brand i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.9rem;
            margin-top: 0.8rem;
            line-height: 1.6;
            max-width: 260px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
            letter-spacing: 1px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.6rem;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            transition: color 0.3s, padding-left 0.3s;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

        /* 响应式 */
        @media (max-width: 991.98px) {
            .nav-panel {
                padding: 0.5rem 1rem;
            }
            .navbar-collapse {
                padding: 1rem 0;
            }
            .navbar-nav .nav-item {
                margin: 0.2rem 0;
            }
            .nav-link {
                padding: 0.65rem 1rem !important;
            }
            .header-cta {
                margin-top: 0.8rem;
            }
            .hero {
                padding: 100px 0 80px;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero-stats {
                gap: 1rem;
            }
            .hero-stats .stat {
                min-width: 90px;
                padding: 0.8rem 1rem;
            }
            .step-item:not(:last-child)::after {
                display: none;
            }
            .why-content {
                padding-left: 0;
                margin-top: 2rem;
            }
            .section {
                --spacing-section: 3.5rem;
            }
        }
        @media (max-width: 767.98px) {
            .hero h1 {
                font-size: 2rem;
            }
            .hero .lead {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                text-align: center;
            }
            .section-head h2 {
                font-size: 1.7rem;
            }
            .cta-inner {
                padding: 2.5rem 1.2rem;
                border-radius: 20px;
            }
            .cta-inner h2 {
                font-size: 1.6rem;
            }
            .countdown-item {
                min-width: 65px;
                padding: 0.6rem 0.9rem;
            }
            .countdown-item .cd-num {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 575.98px) {
            .hero {
                padding: 80px 0 60px;
            }
            .hero-stats .stat {
                flex: 1;
                min-width: 0;
            }
            .step-item .step-num {
                width: 64px;
                height: 64px;
                font-size: 1.5rem;
                border-radius: 18px;
            }
            .faq-question {
                padding: 1.1rem 1.2rem;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 1.2rem 1.1rem;
            }
            .advantage-card {
                padding: 1.5rem 1rem;
            }
            .cta-actions .btn {
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2456e6;
            --primary-dark: #1a3fa8;
            --primary-light: #eaf0fe;
            --accent: #ff8a00;
            --accent-light: #fff3e6;
            --dark-bg: #0e1a2f;
            --body-bg: #f6f8fc;
            --white: #ffffff;
            --text-main: #1e2a3e;
            --text-muted: #6b7a90;
            --border-color: #e5eaf2;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 4px 14px rgba(15, 30, 60, .06);
            --shadow-md: 0 10px 30px rgba(15, 30, 60, .08);
            --shadow-accent: 0 10px 24px rgba(255, 138, 0, .28);
            --transition: all .25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--body-bg);
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: var(--primary-dark);
        }

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

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

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, .86);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 10px 0;
        }

        .nav-panel {
            background: transparent;
            border: none;
            padding: 0;
            min-height: 56px;
        }

        .navbar-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: .5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .navbar-brand i {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            border-radius: 10px;
            font-size: 1rem;
        }

        .navbar-brand:hover {
            color: var(--primary);
        }

        .navbar-nav .nav-link {
            font-weight: 600;
            color: var(--text-muted);
            padding: 8px 18px;
            border-radius: 10px;
            margin: 0 3px;
            transition: var(--transition);
            font-size: .93rem;
        }

        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 700;
        }

        .header-cta .btn-accent {
            background: linear-gradient(135deg, var(--accent), #ff6a00);
            color: #fff;
            border: none;
            padding: 10px 22px;
            font-weight: 700;
            border-radius: 30px;
            box-shadow: var(--shadow-accent);
            transition: var(--transition);
            font-size: .9rem;
        }

        .header-cta .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 28px rgba(255, 138, 0, .38);
            color: #fff;
        }

        .navbar-toggler {
            border: none;
            background: var(--primary-light);
            border-radius: 10px;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(36, 86, 230, .2);
            outline: none;
        }

        /* ===== 页面 Banner ===== */
        .page-hero {
            position: relative;
            background: linear-gradient(180deg, rgba(14, 26, 47, .82), rgba(14, 26, 47, .62)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            padding: 110px 0 90px;
            text-align: center;
        }

        .page-hero .breadcrumb-nav {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            padding: 7px 18px;
            border-radius: 30px;
            font-size: .82rem;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 30px;
            backdrop-filter: blur(8px);
        }

        .page-hero .breadcrumb-nav a {
            color: #fff;
        }

        .page-hero .breadcrumb-nav a:hover {
            color: var(--accent);
        }

        .hero-badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent), #ff6a00);
            color: #fff;
            font-weight: 700;
            font-size: .8rem;
            padding: 6px 20px;
            border-radius: 30px;
            letter-spacing: 2px;
            margin-bottom: 18px;
            text-transform: uppercase;
            box-shadow: var(--shadow-accent);
        }

        .page-hero h1 {
            font-size: clamp(2rem, 4.5vw, 3.2rem);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 2px;
        }

        .page-hero .lead-text {
            font-size: 1.08rem;
            max-width: 680px;
            margin: 0 auto 34px;
            color: rgba(255, 255, 255, .85);
            line-height: 1.8;
        }

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

        .btn-light-accent {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            border: none;
            padding: 12px 30px;
            border-radius: 30px;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(255, 255, 255, .18);
        }

        .btn-light-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 26px rgba(255, 255, 255, .28);
            color: var(--primary-dark);
        }

        .btn-outline-white {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, .65);
            font-weight: 600;
            padding: 11px 28px;
            border-radius: 30px;
            transition: var(--transition);
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, .14);
            color: #fff;
            border-color: #fff;
            transform: translateY(-3px);
        }

        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 50px;
            max-width: 720px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-metric {
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: var(--radius-md);
            padding: 18px 14px;
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }

        .hero-metric:hover {
            background: rgba(255, 255, 255, .18);
            transform: translateY(-4px);
        }

        .hero-metric .num {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .hero-metric .label {
            font-size: .82rem;
            color: rgba(255, 255, 255, .8);
            margin-top: 4px;
        }

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

        .section-block.alt-bg {
            background: var(--white);
        }

        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }

        .section-head .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: .78rem;
            font-weight: 700;
            padding: 5px 18px;
            border-radius: 30px;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2.3rem);
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 12px;
            letter-spacing: 1px;
            position: relative;
            padding-bottom: 16px;
        }

        .section-head h2::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 56px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .section-head p {
            color: var(--text-muted);
            font-size: .95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 特点卡片 ===== */
        .feature-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            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(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 18px;
            background: linear-gradient(135deg, var(--primary-light), #dfe9fe);
            color: var(--primary);
        }

        .feature-card h3 {
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .feature-card p {
            color: var(--text-muted);
            font-size: .88rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 访问方式卡片 ===== */
        .method-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .method-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
        }

        .method-card .card-img-wrap {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

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

        .method-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .method-card .card-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(14, 26, 47, .15));
        }

        .method-card .card-body {
            padding: 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .method-card .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: .75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 12px;
            align-self: flex-start;
            letter-spacing: .5px;
        }

        .method-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .method-card p {
            color: var(--text-muted);
            font-size: .88rem;
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .method-card .card-link {
            font-weight: 700;
            font-size: .88rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .method-card .card-link i {
            transition: transform .25s ease;
        }

        .method-card .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 步骤 ===== */
        .steps-section {
            background: var(--dark-bg);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .steps-section::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -120px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(36, 86, 230, .4), transparent 70%);
            border-radius: 50%;
        }

        .steps-section .section-head h2 {
            color: #fff;
        }

        .steps-section .section-head p {
            color: rgba(255, 255, 255, .75);
        }

        .steps-section .tag {
            background: rgba(255, 255, 255, .1) !important;
            color: #fff !important;
        }

        .step-card {
            position: relative;
            padding: 30px 24px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-lg);
            height: 100%;
            transition: var(--transition);
            text-align: center;
        }

        .step-card:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, .2);
        }

        .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, var(--accent), #ff6a00);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: var(--shadow-accent);
        }

        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .step-card p {
            font-size: .88rem;
            color: rgba(255, 255, 255, .75);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .step-arrow {
            position: absolute;
            top: 50%;
            right: -32px;
            transform: translateY(-50%);
            color: var(--accent);
            font-size: 1.4rem;
            z-index: 2;
        }

        @media (max-width: 991px) {
            .step-arrow {
                display: none;
            }
        }

        /* ===== 注意事项 ===== */
        .tips-wrap {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .tips-img {
            height: 100%;
            min-height: 300px;
            background: url('/assets/images/coverpic/cover-4.png') center/cover no-repeat;
        }

        .tips-content {
            padding: 40px;
        }

        .tips-content h3 {
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-main);
        }

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

        .tips-list li {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 14px 0;
            border-bottom: 1px dashed var(--border-color);
        }

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

        .tips-list .tip-icon {
            flex-shrink: 0;
            width: 34px;
            height: 34px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .85rem;
        }

        .tips-list .tip-text {
            font-size: .9rem;
            color: var(--text-main);
            line-height: 1.7;
        }

        .tips-list .tip-text strong {
            display: block;
            margin-bottom: 2px;
            color: var(--text-main);
        }

        .tips-list .tip-text span {
            color: var(--text-muted);
            font-size: .85rem;
        }

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

        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-item {
            border: 1px solid var(--border-color) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .accordion-button {
            font-size: .95rem;
            font-weight: 600;
            color: var(--text-main);
            padding: 18px 22px;
            background: var(--white);
        }

        .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(36, 86, 230, .15);
        }

        .accordion-button::after {
            background-size: 1rem;
        }

        .accordion-body {
            padding: 20px 22px;
            color: var(--text-muted);
            font-size: .9rem;
            line-height: 1.75;
            background: var(--white);
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            background-blend-mode: overlay;
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
        }

        .cta-block::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -50px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 138, 0, .18);
        }

        .cta-block h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-block p {
            max-width: 560px;
            margin: 0 auto 30px;
            color: rgba(255, 255, 255, .82);
            font-size: .95rem;
            position: relative;
            z-index: 1;
        }

        .cta-block .btn-accent {
            background: var(--accent);
            color: #fff;
            border: none;
            font-weight: 700;
            padding: 14px 38px;
            border-radius: 30px;
            box-shadow: var(--shadow-accent);
            transition: var(--transition);
            position: relative;
            z-index: 1;
            font-size: .95rem;
        }

        .cta-block .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 30px rgba(255, 138, 0, .45);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, .75);
            padding: 60px 0 0;
            margin-top: 80px;
        }

        .site-footer .navbar-brand {
            color: #fff;
            margin-bottom: 14px;
        }

        .site-footer .navbar-brand:hover {
            color: var(--accent);
        }

        .footer-brand {
            padding-right: 15px;
        }

        .footer-brand p {
            font-size: .85rem;
            color: rgba(255, 255, 255, .6);
            line-height: 1.7;
            margin-top: 14px;
        }

        .footer-col h5 {
            color: #fff;
            font-size: .98rem;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h5::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

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

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, .6);
            font-size: .85rem;
            transition: var(--transition);
            display: inline-block;
        }

        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            margin-top: 40px;
            padding: 20px 0;
            text-align: center;
            font-size: .82rem;
            color: rgba(255, 255, 255, .4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, .5);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .navbar-collapse {
                background: var(--white);
                border-radius: var(--radius-md);
                padding: 18px;
                margin-top: 14px;
                box-shadow: var(--shadow-md);
                border: 1px solid var(--border-color);
            }

            .navbar-nav .nav-link {
                padding: 10px 14px;
            }

            .header-cta {
                margin-top: 12px;
            }

            .page-hero {
                padding: 80px 0 60px;
            }

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

            .steps-section .row {
                row-gap: 20px;
            }

            .tips-content {
                padding: 28px;
            }
        }

        @media (max-width: 767px) {
            .hero-metrics {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
            }

            .hero-metric {
                padding: 14px 8px;
            }

            .hero-metric .num {
                font-size: 1.3rem;
            }

            .hero-metric .label {
                font-size: .72rem;
            }

            .section-head {
                margin-bottom: 34px;
            }

            .cta-block {
                padding: 40px 22px;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.7rem;
                letter-spacing: 1px;
            }

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

            .hero-metrics {
                grid-template-columns: 1fr 1fr;
            }

            .section-block {
                padding: 46px 0;
            }

            .tips-content {
                padding: 22px;
            }

            .site-footer {
                padding-top: 44px;
            }
        }

/* roulang page: article */
:root {
    --primary: #2b3a67;
    --primary-dark: #1e2a4a;
    --primary-light: #4c5c8c;
    --accent: #f0a500;
    --accent-dark: #d18e00;
    --accent-light: #ffe9b8;
    --bg: #f5f7fc;
    --bg-soft: #eef2f9;
    --card-bg: #ffffff;
    --text: #1e2a3a;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --border: #e4e9f2;
    --radius: 18px;
    --radius-sm: 12px;
    --radius-xs: 8px;
    --shadow: 0 10px 30px rgba(43, 58, 103, 0.08);
    --shadow-lg: 0 24px 48px rgba(43, 58, 103, 0.14);
    --transition: all 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 16px;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; }
.container { max-width: 1240px; padding: 0 20px; }

/* ===== Buttons ===== */
.btn {
    border-radius: 50px;
    padding: 10px 24px;
    font-weight: 600;
    font-size: 14px;
    border: 2px solid transparent;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-accent {
    background: linear-gradient(135deg, var(--accent), #ffb83d);
    color: #1e1e1e;
    border-color: transparent;
}
.btn-accent:hover { background: linear-gradient(135deg, #ffb83d, var(--accent)); color: #1e1e1e; }
.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: transparent;
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-outline-light {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.6);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.15); border-color: #fff; color: #fff; }
.btn-outline-primary {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline-primary:hover { background: var(--primary); color: #fff; }
.btn-sm { padding: 7px 18px; font-size: 13px; }

/* ===== Header / Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1050;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(228, 233, 242, 0.7);
    padding: 10px 0;
}
.nav-panel {
    background: linear-gradient(120deg, #f0f4ff 0%, #ffffff 60%, #fffaf0 100%);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 8px 18px;
    box-shadow: 0 8px 24px rgba(43,58,103,0.07);
    min-height: 68px;
}
.navbar-brand {
    font-size: 22px;
    font-weight: 800;
    color: var(--primary) !important;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.navbar-brand i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--accent), #ffc75f);
    color: #1e1e1e;
    border-radius: 12px;
    font-size: 17px;
}
.site-header .navbar-nav { gap: 4px; }
.site-header .nav-link {
    color: var(--text);
    font-weight: 500;
    font-size: 15px;
    padding: 10px 18px !important;
    border-radius: 12px;
    position: relative;
}
.site-header .nav-link i { margin-right: 6px; color: var(--accent); font-size: 14px; }
.site-header .nav-link:hover {
    background: var(--bg-soft);
    color: var(--primary);
}
.site-header .nav-link.active {
    background: var(--primary);
    color: #fff !important;
}
.site-header .nav-link.active i { color: var(--accent); }
.header-cta { margin-left: 8px; }
.navbar-toggler {
    border: 1px solid var(--border) !important;
    border-radius: 10px !important;
    padding: 6px 10px !important;
    background: #fff !important;
}
.navbar-toggler:focus { box-shadow: none !important; }

/* ===== Page Banner ===== */
.page-banner {
    background: linear-gradient(135deg, rgba(30,42,74,0.88), rgba(43,58,103,0.72)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding: 70px 0 56px;
    position: relative;
    color: #fff;
}
.page-banner::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(240,165,0,0.18), transparent 60%);
    pointer-events: none;
}
.page-banner .container { position: relative; z-index: 2; }
.breadcrumb-wrap { margin-bottom: 20px; }
.breadcrumb {
    background: rgba(255,255,255,0.12);
    border-radius: 50px;
    padding: 8px 18px;
    display: inline-flex;
    backdrop-filter: blur(6px);
    margin-bottom: 0;
}
.breadcrumb-item { font-size: 13px; }
.breadcrumb-item a { color: rgba(255,255,255,0.75); }
.breadcrumb-item a:hover { color: #fff; text-decoration: underline; }
.breadcrumb-item.active { color: var(--accent); }
.breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.4); content: "›"; }
.page-banner-title .banner-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.14);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 14px;
}
.page-banner-title h2 { font-size: 38px; font-weight: 800; letter-spacing: -1px; margin-bottom: 8px; }
.page-banner-title p { font-size: 16px; color: rgba(255,255,255,0.8); max-width: 560px; margin-bottom: 0; }

/* ===== Article Section ===== */
.article-section { padding: 60px 0; }
.article-wrapper {
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 42px;
    position: relative;
}
.article-title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.36;
    letter-spacing: -0.5px;
    color: var(--text);
    margin-bottom: 16px;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 26px;
    color: var(--text-light);
    font-size: 14px;
}
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-meta i { color: var(--accent); }
.article-body { font-size: 16px; line-height: 1.9; color: #3d4a5c; }
.article-body p { margin-bottom: 1.4em; }
.article-body h2 { font-size: 26px; font-weight: 700; margin: 1.8em 0 0.8em; color: var(--primary); }
.article-body h3 { font-size: 21px; font-weight: 700; margin: 1.6em 0 0.6em; color: var(--text); }
.article-body h4 { font-size: 18px; font-weight: 700; margin: 1.4em 0 0.5em; }
.article-body img { border-radius: var(--radius); box-shadow: var(--shadow); max-width: 100%; }
.article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 1.4em; }
.article-body ul li { margin-bottom: 10px; position: relative; }
.article-body ul li::marker { color: var(--accent); }
.article-body blockquote {
    border-left: 4px solid var(--accent);
    background: var(--bg-soft);
    padding: 18px 22px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 1.6em 0;
    color: var(--text-light);
    font-style: normal;
}
.article-body a { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--primary); background: var(--accent-light); }
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 30px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.tag-badge {
    background: var(--bg-soft);
    color: var(--primary);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 5px 14px;
    font-size: 13px;
    font-weight: 600;
    transition: var(--transition);
}
.tag-badge:hover { background: var(--accent); border-color: var(--accent); color: #1e1e1e; }

/* ===== Article Empty ===== */
.article-empty {
    text-align: center;
    padding: 70px 30px;
}
.article-empty i { font-size: 56px; color: var(--border); margin-bottom: 20px; }
.article-empty h1 { font-size: 30px; font-weight: 800; color: var(--text); margin-bottom: 10px; }
.article-empty p { color: var(--text-light); margin-bottom: 20px; }

/* ===== Sidebar ===== */
.sidebar-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 26px;
    margin-bottom: 24px;
    transition: var(--transition);
}
.sidebar-card:hover { box-shadow: var(--shadow-lg); }
.sidebar-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--bg-soft);
}
.sidebar-title i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent), #ffc75f);
    color: #1e1e1e;
    border-radius: 9px;
    font-size: 14px;
}
.info-list { list-style: none; padding: 0; margin: 0; }
.info-list li {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border);
    font-size: 14px;
}
.info-list li:last-child { border-bottom: none; }
.info-list .label { color: var(--text-light); }
.info-list .value { font-weight: 600; color: var(--text); text-align: right; }

.category-side-list { list-style: none; padding: 0; margin: 0; }
.category-side-list li { margin-bottom: 8px; }
.category-side-list a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-soft);
    color: var(--text);
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
}
.category-side-list a i { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; border-radius: 8px; background: var(--card-bg); color: var(--accent); font-size: 13px; }
.category-side-list a:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateX(4px);
}
.category-side-list a:hover i { background: var(--accent); color: #1e1e1e; }

.latest-list { list-style: none; padding: 0; margin: 0; }
.latest-list li { margin-bottom: 6px; }
.latest-list a {
    display: block;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
}
.latest-list a:hover { background: var(--bg-soft); }
.latest-list .latest-title {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    line-height: 1.5;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.latest-list a:hover .latest-title { color: var(--accent-dark); }
.latest-list .latest-date { font-size: 12px; color: var(--text-muted); }

.support-card { background: linear-gradient(145deg, var(--primary), var(--primary-dark)); color: #fff; border: none; position: relative; overflow: hidden; }
.support-card::after { content: ""; position: absolute; top: -40%; right: -30%; width: 200px; height: 200px; background: rgba(240,165,0,0.15); border-radius: 50%; }
.support-card .sidebar-title { color: #fff; border-bottom-color: rgba(255,255,255,0.15); }
.support-card .sidebar-title i { background: var(--accent); color: #1e1e1e; }
.support-card p { color: rgba(255,255,255,0.75); font-size: 14px; }
.support-card .support-links { list-style: none; padding: 0; margin: 0 0 20px; }
.support-card .support-links li { margin-bottom: 8px; }
.support-card .support-links a { color: rgba(255,255,255,0.85); font-size: 14px; display: inline-flex; align-items: center; gap: 8px; }
.support-card .support-links a:hover { color: var(--accent); }

/* ===== CTA ===== */
.cta-block { padding: 0 0 70px; }
.cta-card {
    background: linear-gradient(125deg, var(--primary) 0%, var(--primary-light) 60%, #64748b 100%);
    border-radius: 24px;
    padding: 48px 56px;
    position: relative;
    overflow: hidden;
    text-align: center;
    color: #fff;
}
.cta-card::before {
    content: "";
    position: absolute;
    top: -60%;
    right: -20%;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(240,165,0,0.28), transparent 65%);
}
.cta-card::after {
    content: "";
    position: absolute;
    bottom: -70%;
    left: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.08), transparent 60%);
}
.cta-card .cta-content { position: relative; z-index: 2; }
.cta-card h3 { font-size: 28px; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.5px; }
.cta-card p { font-size: 16px; color: rgba(255,255,255,0.85); margin-bottom: 26px; max-width: 620px; margin-left: auto; margin-right: auto; }
.cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer {
    background: #111827;
    color: #9ca3af;
    padding: 70px 0 0;
    border-top: 4px solid var(--accent);
}
.site-footer .navbar-brand { color: #fff !important; font-size: 20px; }
.site-footer .navbar-brand i { background: var(--accent); color: #1e1e1e; }
.footer-brand p { color: #9ca3af; font-size: 14px; margin-top: 16px; line-height: 1.8; max-width: 320px; }
.footer-col h5 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
    padding-bottom: 12px;
    position: relative;
}
.footer-col h5::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 36px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
    color: #9ca3af;
    font-size: 14px;
    transition: var(--transition);
}
.footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    margin-top: 50px;
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: #6b7280;
}
.footer-bottom a { color: #9ca3af; }
.footer-bottom a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .page-banner { padding: 55px 0 44px; }
    .page-banner-title h2 { font-size: 32px; }
    .article-wrapper { padding: 32px; }
    .cta-card { padding: 40px 32px; }
}
@media (max-width: 768px) {
    body { font-size: 15px; }
    .nav-panel { border-radius: 16px; padding: 8px 12px; }
    .site-header .navbar-nav { padding: 10px 0; }
    .site-header .nav-link { padding: 10px 14px !important; font-size: 15px; }
    .navbar-brand { font-size: 19px; }
    .navbar-brand i { width: 34px; height: 34px; font-size: 15px; }
    .header-cta { margin-left: 0; }
    .page-banner { padding: 46px 0 38px; }
    .page-banner-title h2 { font-size: 27px; }
    .page-banner-title p { font-size: 14px; }
    .article-section { padding: 40px 0; }
    .article-wrapper { padding: 24px 18px; border-radius: var(--radius-sm); }
    .article-title { font-size: 25px; }
    .article-meta { gap: 12px; font-size: 13px; }
    .article-body { font-size: 15px; }
    .sidebar-card { padding: 20px; }
    .cta-block { padding-bottom: 50px; }
    .cta-card { padding: 34px 20px; border-radius: var(--radius); }
    .cta-card h3 { font-size: 23px; }
    .site-footer { padding-top: 50px; }
}
@media (max-width: 520px) {
    .navbar-brand { font-size: 17px; }
    .navbar-brand i { width: 30px; height: 30px; font-size: 13px; }
    .page-banner { padding: 38px 0 32px; }
    .page-banner-title h2 { font-size: 23px; }
    .breadcrumb { padding: 6px 14px; }
    .article-title { font-size: 22px; }
    .article-meta { flex-direction: column; gap: 6px; }
    .tag-badge { font-size: 12px; padding: 4px 10px; }
    .btn { padding: 9px 18px; font-size: 13px; }
    .cta-buttons { flex-direction: column; align-items: stretch; }
    .cta-buttons .btn { justify-content: center; }
    .latest-list a { padding: 10px 8px; }
    .footer-bottom p { font-size: 12px; padding: 0 10px; }
}

/* roulang page: category2 */
:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #dbeafe;
  --accent: #f97316;
  --accent-light: #ffedd5;
  --accent-hover: #ea580c;
  --dark-bg: #0b1120;
  --dark-card: #111a2e;
  --light-bg: #f1f5f9;
  --white: #ffffff;
  --text: #1e293b;
  --text-light: #5b6b7f;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-sm: 10px;
  --shadow: 0 20px 45px rgba(15, 23, 42, .08);
  --shadow-lg: 0 30px 60px rgba(15, 23, 42, .12);
  --shadow-sm: 0 8px 20px rgba(15, 23, 42, .06);
  --font-main: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease;
}

a:hover {
  color: var(--primary-dark);
}

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

button,
input,
select {
  font-family: inherit;
}

.container {
  max-width: 1220px;
  padding-left: 22px;
  padding-right: 22px;
}

.section-padding {
  padding: 88px 0;
}

.section-light {
  background: var(--light-bg);
}

.section-dark {
  background: var(--dark-bg);
  color: var(--white);
}

.section-head {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-head .badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 600;
  padding: 7px 18px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
  margin-bottom: 14px;
}

.section-head p {
  color: var(--text-light);
  font-size: 1.05rem;
  margin-bottom: 0;
}

.section-dark .section-head h2 {
  color: var(--white);
}

.section-dark .section-head p {
  color: rgba(255,255,255,.72);
}

/* Header / Nav */
.site-header {
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(226, 232, 240, .7);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-panel {
  background: var(--white);
  border-radius: 999px;
  padding: 10px 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar-brand {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.3px;
}

.navbar-brand i {
  color: var(--accent);
  font-size: 1.3rem;
}

.navbar-brand:hover {
  color: var(--primary);
}

.navbar-nav {
  gap: 4px;
}

.nav-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-light);
  padding: 9px 18px !important;
  border-radius: 999px;
  transition: all .2s ease;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-link.active {
  color: var(--white);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 6px 16px rgba(37, 99, 235, .28);
}

.header-cta .btn-accent {
  border-radius: 999px;
  font-weight: 700;
}

.navbar-toggler {
  border: none;
  padding: 6px 10px;
  border-radius: 10px;
}

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

/* Buttons */
.btn {
  border-radius: 999px;
  font-weight: 600;
  padding: 12px 28px;
  transition: all .25s ease;
}

.btn-accent {
  background: linear-gradient(135deg, #f97316, #ea580c);
  color: var(--white);
  border: none;
  box-shadow: 0 10px 24px rgba(249, 115, 22, .32);
}

.btn-accent:hover,
.btn-accent:focus {
  color: var(--white);
  background: linear-gradient(135deg, #fb923c, #ea580c);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(249, 115, 22, .4);
}

.btn-outline-light {
  border: 2px solid rgba(255,255,255,.75);
  color: var(--white);
  background: transparent;
  border-radius: 999px;
  padding: 11px 26px;
  font-weight: 600;
  transition: all .25s ease;
}

.btn-outline-light:hover {
  background: var(--white);
  color: var(--dark-bg);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0,0,0,.15);
}

.btn-primary {
  background: var(--primary);
  border: none;
  box-shadow: 0 10px 24px rgba(37, 99, 235, .28);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 22px;
  font-size: .9rem;
}

/* Banner */
.page-banner {
  position: relative;
  min-height: 430px;
  display: flex;
  align-items: center;
  background: linear-gradient(120deg, rgba(11,17,32,.92) 0%, rgba(17,30,54,.82) 55%, rgba(30,64,175,.75) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 90px 0;
  color: var(--white);
  overflow: hidden;
}

.page-banner::after {
  content: '';
  position: absolute;
  right: -12%;
  top: -20%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(249,115,22,.35) 0%, transparent 68%);
  pointer-events: none;
}

.page-banner .breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.16);
  padding: 7px 18px;
  border-radius: 999px;
  margin-bottom: 26px;
  color: rgba(255,255,255,.85);
}

.page-banner .breadcrumb a {
  color: rgba(255,255,255,.7);
}

.page-banner .breadcrumb a:hover {
  color: var(--white);
}

.page-banner .breadcrumb i {
  font-size: 12px;
  color: rgba(255,255,255,.5);
}

.page-banner h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 18px;
}

.page-banner .lead {
  font-size: 1.15rem;
  max-width: 620px;
  color: rgba(255,255,255,.8);
  margin-bottom: 32px;
}

.banner-badge-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.banner-badge-group .banner-pill {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.85);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  backdrop-filter: blur(4px);
}

.banner-badge-group .banner-pill i {
  color: #fdba74;
  margin-right: 6px;
}

/* Steps */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}

.step-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity .3s ease;
}

.step-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
  border-color: rgba(37,99,235,.24);
}

.step-card:hover::before {
  opacity: 1;
}

.step-num {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary-light), #eff6ff);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 20px;
}

.step-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.step-card p {
  font-size: .93rem;
  color: var(--text-light);
  margin-bottom: 0;
  line-height: 1.65;
}

/* Course cards */
.course-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

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

.course-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.course-card .card-img {
  position: relative;
  height: 200px;
  overflow: hidden;
}

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

.course-card:hover .card-img img {
  transform: scale(1.06);
}

.course-card .card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255,255,255,.92);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
  box-shadow: 0 4px 12px rgba(0,0,0,.1);
}

.course-card .card-body {
  padding: 26px;
}

.course-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.course-card p {
  font-size: .94rem;
  color: var(--text-light);
  margin-bottom: 18px;
}

.course-card .card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: .85rem;
  color: var(--text-light);
  padding-top: 15px;
  border-top: 1px solid #f1f5f9;
}

.course-card .card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.course-card .card-meta i {
  color: var(--primary);
}

/* Directory / List section */
.catalog-grid {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 48px;
  align-items: start;
}

.catalog-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow);
  min-height: 420px;
}

.catalog-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 420px;
}

.catalog-visual .visual-caption {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 20px;
  background: rgba(11,17,32,.78);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  padding: 18px 20px;
  color: var(--white);
}

.catalog-visual .visual-caption h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.catalog-visual .visual-caption p {
  font-size: .85rem;
  color: rgba(255,255,255,.7);
  margin: 0;
}

.catalog-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.catalog-item {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
  transition: all .25s ease;
  cursor: default;
}

.catalog-item:hover {
  transform: translateX(6px);
  border-color: rgba(37,99,235,.35);
  box-shadow: var(--shadow-sm);
}

.catalog-item .item-idx {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
  background: var(--primary-light);
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.catalog-item .item-content {
  flex: 1;
}

.catalog-item .item-content h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 3px;
}

.catalog-item .item-content p {
  font-size: .86rem;
  color: var(--text-light);
  margin: 0;
}

.catalog-item .item-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  font-size: .82rem;
  color: var(--text-light);
  white-space: nowrap;
}

.catalog-item .item-info .duration {
  background: var(--light-bg);
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 600;
}

.catalog-item .item-info .tag {
  background: var(--accent-light);
  color: var(--accent-hover);
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .78rem;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.stat-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 38px 24px;
  text-align: center;
  transition: all .3s ease;
  backdrop-filter: blur(6px);
}

.stat-card:hover {
  background: rgba(255,255,255,.09);
  transform: translateY(-5px);
  border-color: rgba(249,115,22,.4);
}

.stat-card .stat-num {
  font-size: 2.6rem;
  font-weight: 900;
  background: linear-gradient(135deg, #fdba74, #f97316);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-card .stat-label {
  font-size: .95rem;
  color: rgba(255,255,255,.72);
  margin-top: 8px;
}

/* Tips */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.tip-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
  text-align: center;
}

.tip-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.tip-card .tip-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), #e0f2fe);
  color: var(--primary);
  font-size: 1.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.tip-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.tip-card p {
  font-size: .9rem;
  color: var(--text-light);
  margin-bottom: 0;
}

/* FAQ */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
  padding: 26px 32px;
  transition: border-color .2s ease;
}

.faq-item:hover {
  border-color: rgba(37,99,235,.3);
}

.faq-item h4 {
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-item h4 i {
  color: var(--primary);
  font-size: 1rem;
}

.faq-item p {
  color: var(--text-light);
  font-size: .95rem;
  margin: 0;
  padding-left: 28px;
}

/* CTA */
.cta-section {
  background: linear-gradient(125deg, #0b1120 0%, #172554 60%, #1e40af 100%);
  position: relative;
  overflow: hidden;
  padding: 80px 0;
  color: var(--white);
}

.cta-section::before {
  content: '';
  position: absolute;
  left: -10%;
  bottom: -30%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(249,115,22,.24) 0%, transparent 65%);
  pointer-events: none;
}

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

.cta-box h2 {
  font-size: clamp(1.9rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-box p {
  color: rgba(255,255,255,.78);
  font-size: 1.05rem;
  margin-bottom: 30px;
}

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

/* Footer */
.site-footer {
  background: var(--dark-bg);
  color: rgba(255,255,255,.7);
  padding: 64px 0 0;
}

.site-footer .footer-brand p {
  color: rgba(255,255,255,.55);
  font-size: .95rem;
  margin: 18px 0 0;
  max-width: 320px;
}

.site-footer .footer-brand .navbar-brand {
  color: var(--white);
  font-size: 1.2rem;
}

.footer-col h5 {
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}

.footer-col h5::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 34px;
  height: 3px;
  background: var(--accent);
  border-radius: 99px;
}

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

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

.footer-col ul a {
  color: rgba(255,255,255,.6);
  font-size: .94rem;
  transition: all .2s ease;
}

.footer-col ul a:hover {
  color: var(--white);
  padding-left: 5px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 22px 0;
  margin-top: 48px;
  text-align: center;
  font-size: .9rem;
  color: rgba(255,255,255,.45);
}

.footer-bottom a {
  color: rgba(255,255,255,.6);
}

.footer-bottom a:hover {
  color: var(--white);
}

/* Responsive */
@media (max-width: 991.98px) {
  .nav-panel {
    border-radius: 20px;
    padding: 14px 18px;
  }
  .navbar-collapse {
    padding-top: 14px;
  }
  .nav-link {
    white-space: normal;
    text-align: center;
  }
  .header-cta {
    text-align: center;
    padding: 10px 0 4px;
  }
  .steps-grid,
  .course-cards,
  .stats-grid,
  .tips-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .catalog-grid {
    grid-template-columns: 1fr;
  }
  .catalog-visual img {
    min-height: 320px;
  }
}

@media (max-width: 767.98px) {
  .section-padding {
    padding: 64px 0;
  }
  .page-banner {
    min-height: 360px;
    padding: 70px 0;
  }
  .catalog-item {
    flex-wrap: wrap;
    gap: 12px;
  }
  .catalog-item .item-info {
    flex-direction: row;
    align-items: center;
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 575.98px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .steps-grid,
  .course-cards,
  .stats-grid,
  .tips-grid {
    grid-template-columns: 1fr;
  }
  .page-banner h1 {
    font-size: 2rem;
  }
  .page-banner .lead {
    font-size: 1rem;
  }
  .banner-badge-group .banner-pill {
    font-size: 12px;
    padding: 6px 14px;
  }
  .catalog-item .item-idx {
    width: 40px;
    height: 40px;
    min-width: 40px;
    font-size: 1.1rem;
  }
  .faq-item {
    padding: 20px 18px;
  }
  .cta-box .cta-btns .btn {
    width: 100%;
  }
}

/* roulang page: category3 */
:root {
            --primary: #0a1628;
            --primary-light: #13233d;
            --accent: #e8a33d;
            --accent-dark: #d18a24;
            --accent-soft: #fdf1dc;
            --bg-light: #f5f8fc;
            --bg-white: #ffffff;
            --bg-dark: #0b1a2e;
            --text-main: #16283f;
            --text-muted: #5b6f85;
            --border-color: #e8edf3;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-sm: 0 4px 14px rgba(10, 22, 40, 0.06);
            --shadow-md: 0 10px 30px rgba(10, 22, 40, 0.08);
            --shadow-lg: 0 20px 50px rgba(10, 22, 40, 0.12);
            --transition: all 0.3s ease;
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            color: var(--text-main);
            background: var(--bg-light);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

        ul {
            list-style: none;
        }

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            background: transparent;
            padding: 18px 0;
            position: relative;
            z-index: 100;
        }

        .nav-panel {
            background: var(--bg-white);
            backdrop-filter: blur(12px);
            border-radius: 60px;
            padding: 12px 28px;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(232, 237, 243, 0.8);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .navbar-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary) !important;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-right: 20px;
        }

        .navbar-brand i {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent), #f7c568);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 6px 16px rgba(232, 163, 61, 0.35);
        }

        .nav-panel .navbar-nav {
            gap: 6px;
        }

        .nav-panel .nav-link {
            font-weight: 500;
            font-size: 0.98rem;
            color: var(--text-muted) !important;
            padding: 8px 18px !important;
            border-radius: 40px;
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-panel .nav-link:hover {
            color: var(--primary) !important;
            background: var(--accent-soft);
        }

        .nav-panel .nav-link.active {
            color: var(--primary) !important;
            background: linear-gradient(135deg, #fdf1dc, #fbe3bc);
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(232, 163, 61, 0.15);
        }

        .header-cta .btn-accent {
            background: linear-gradient(135deg, var(--accent), #f0b455);
            border: none;
            color: #fff;
            border-radius: 40px;
            padding: 9px 26px;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: 0 8px 20px rgba(232, 163, 61, 0.3);
            transition: var(--transition);
        }

        .header-cta .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(232, 163, 61, 0.45);
            background: linear-gradient(135deg, var(--accent-dark), var(--accent));
        }

        .navbar-toggler {
            border: none;
            background: var(--accent-soft);
            border-radius: 10px;
            padding: 6px 12px;
            box-shadow: none;
            outline: none;
        }

        /* ===== 页面横幅 ===== */
        .category-banner {
            background: linear-gradient(120deg, #081223 0%, #0f223d 60%, #1a3052 100%);
            border-radius: 28px;
            padding: 52px 50px;
            margin: 10px 0 20px;
            position: relative;
            overflow: hidden;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }

        .category-banner::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -30px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(232, 163, 61, 0.25) 0%, transparent 70%);
            border-radius: 50%;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 30%;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 1;
        }

        .category-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 70%;
        }

        .category-banner .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            color: #f0c886;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .category-banner h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -1px;
            margin-bottom: 16px;
        }

        .category-banner h1 span {
            color: var(--accent);
        }

        .category-banner p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 26px;
            line-height: 1.8;
        }

        .banner-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .banner-btns .btn-primary-cus {
            background: linear-gradient(135deg, var(--accent), #f2bd66);
            color: #0b1a2e;
            font-weight: 700;
            border: none;
            border-radius: 40px;
            padding: 12px 32px;
            font-size: 1rem;
            box-shadow: 0 10px 25px rgba(232, 163, 61, 0.35);
            transition: var(--transition);
        }

        .banner-btns .btn-outline-cus {
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            background: transparent;
            border-radius: 40px;
            padding: 10px 30px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }

        .banner-btns .btn-primary-cus:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 32px rgba(232, 163, 61, 0.5);
        }

        .banner-btns .btn-outline-cus:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-3px);
        }

        /* ===== 核心板块 ===== */
        .section-block {
            padding: 60px 0;
        }

        .section-header {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 50px;
            position: relative;
        }

        .section-subtitle {
            color: var(--accent-dark);
            font-size: 0.9rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 12px;
            display: block;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 16px;
            letter-spacing: -0.8px;
            line-height: 1.3;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1.05rem;
            line-height: 1.8;
        }

        /* ===== 统计卡片 ===== */
        .stat-row {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            margin-bottom: 20px;
        }

        .stat-item {
            text-align: center;
            padding: 20px 10px;
            border-right: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .stat-item:last-child {
            border-right: none;
        }

        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            font-family: 'Arial Black', sans-serif;
            line-height: 1.2;
        }

        .stat-item .num i {
            color: var(--accent);
            font-size: 1.8rem;
            font-style: normal;
        }

        .stat-item .label {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 8px;
            font-weight: 500;
        }

        .stat-item:hover {
            transform: translateY(-4px);
        }

        /* ===== 卡片网格 ===== */
        .promo-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .promo-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .promo-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-8px);
            border-color: rgba(232, 163, 61, 0.4);
        }

        .promo-card .card-img-wrap {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .promo-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .promo-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }

        .promo-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: linear-gradient(135deg, #ff6b5e, #ff3d3d);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 30px;
            box-shadow: 0 6px 14px rgba(255, 61, 61, 0.3);
            z-index: 2;
        }

        .promo-card .card-body {
            padding: 26px 24px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .promo-card .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .promo-card .card-meta i {
            color: var(--accent);
        }

        .promo-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            line-height: 1.5;
            transition: var(--transition);
        }

        .promo-card:hover h3 {
            color: var(--accent-dark);
        }

        .promo-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .card-link-group {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px dashed var(--border-color);
            padding-top: 14px;
        }

        .card-link-group a {
            color: var(--accent-dark);
            font-weight: 600;
            font-size: 0.9rem;
        }

        .card-link-group a:hover {
            color: var(--primary);
            gap: 4px;
        }

        /* ===== 活动列表 ===== */
        .activity-timeline {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .activity-item {
            display: flex;
            gap: 20px;
            padding: 26px 0;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .activity-item:last-child {
            border-bottom: none;
        }

        .activity-item:hover {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            padding-left: 14px;
            padding-right: 14px;
        }

        .activity-date {
            background: linear-gradient(135deg, var(--primary), #1c3556);
            color: #fff;
            border-radius: var(--radius-md);
            width: 80px;
            height: 80px;
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 20px rgba(10, 22, 40, 0.2);
        }

        .activity-date .date-num {
            font-size: 1.8rem;
            font-weight: 800;
            line-height: 1;
        }

        .activity-date .date-month {
            font-size: 0.75rem;
            font-weight: 500;
            opacity: 0.85;
            margin-top: 4px;
        }

        .activity-info {
            flex: 1;
        }

        .activity-info h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 9px;
        }

        .activity-info p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 10px;
            line-height: 1.7;
        }

        .activity-info .activity-meta {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .activity-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .activity-meta i {
            color: var(--accent);
        }

        /* ===== 热门排行 ===== */
        .rank-list {
            display: grid;
            gap: 16px;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .rank-item:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 163, 61, 0.3);
        }

        .rank-num {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #24416e);
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 6px 14px rgba(10, 22, 40, 0.2);
        }

        .rank-item:nth-child(1) .rank-num {
            background: linear-gradient(135deg, #e8a33d, #f7cf82);
            box-shadow: 0 6px 14px rgba(232, 163, 61, 0.4);
        }

        .rank-item:nth-child(2) .rank-num {
            background: linear-gradient(135deg, #aab8c8, #cfdce8);
        }

        .rank-item:nth-child(3) .rank-num {
            background: linear-gradient(135deg, #c98352, #e0a37d);
        }

        .rank-body {
            flex: 1;
        }

        .rank-body h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .rank-body p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
        }

        .rank-value {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent-dark);
            font-family: 'Arial Black', sans-serif;
            white-space: nowrap;
        }

        /* ===== 权益卡 ===== */
        .benefit-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 34px 28px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .benefit-card::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -40px;
            width: 120px;
            height: 120px;
            background: var(--accent-soft);
            border-radius: 50%;
            opacity: 0.5;
            transition: var(--transition);
        }

        .benefit-card:hover {
            transform: translateY(-6px) scale(1.02);
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 163, 61, 0.3);
        }

        .benefit-card:hover::after {
            transform: scale(1.4);
        }

        .benefit-icon {
            width: 62px;
            height: 62px;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--accent-soft), #fbe7c8);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-dark);
            margin-bottom: 18px;
            transition: var(--transition);
        }

        .benefit-card:hover .benefit-icon {
            background: linear-gradient(135deg, var(--accent), #f3c06d);
            color: #fff;
            transform: rotate(-6deg) scale(1.05);
        }

        .benefit-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .benefit-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ===== 活动流程 ===== */
        .steps-row {
            display: flex;
            justify-content: space-between;
            gap: 14px;
            margin: 40px 0;
            flex-wrap: wrap;
        }

        .step-item {
            flex: 1;
            text-align: center;
            position: relative;
            padding: 0 16px;
        }

        .step-item:not(:last-child)::after {
            content: '→';
            position: absolute;
            right: -15px;
            top: 35px;
            color: var(--accent);
            font-size: 1.6rem;
            font-weight: 800;
        }

        .step-num {
            width: 60px;
            height: 60px;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, var(--primary), #26446e);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            box-shadow: 0 10px 24px rgba(10, 22, 40, 0.2);
            position: relative;
            z-index: 2;
            transition: var(--transition);
        }

        .step-item:hover .step-num {
            transform: scale(1.1);
            background: linear-gradient(135deg, var(--accent), #f3c06d);
            box-shadow: 0 12px 30px rgba(232, 163, 61, 0.35);
        }

        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 850px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 163, 61, 0.3);
        }

        .faq-item summary {
            padding: 22px 26px;
            cursor: pointer;
            font-weight: 700;
            font-size: 1.02rem;
            color: var(--primary);
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 600;
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item details[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item details[open] summary {
            color: var(--accent-dark);
        }

        .faq-item summary:hover {
            background: var(--bg-light);
        }

        .faq-body {
            padding: 0 26px 22px;
            color: var(--text-muted);
            font-size: 0.93rem;
            line-height: 1.7;
            border-top: 1px dashed var(--border-color);
            padding-top: 18px;
        }

        /* ===== CTA区域 ===== */
        .cta-panel {
            background: linear-gradient(120deg, #0a1628 0%, #122444 60%, #1b3a5c 100%);
            border-radius: 28px;
            padding: 60px 60px;
            text-align: center;
            position: relative;
            overflow: hidden;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -40px;
            left: -20px;
            width: 220px;
            height: 220px;
            background: rgba(232, 163, 61, 0.2);
            border-radius: 50%;
            filter: blur(10px);
        }

        .cta-panel::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -20px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }

        .cta-panel h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
        }

        .cta-panel p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto 30px;
            position: relative;
            z-index: 2;
            line-height: 1.7;
        }

        .cta-panel .cta-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .cta-panel .btn-cta-primary {
            background: linear-gradient(135deg, var(--accent), #f3c06d);
            color: #0b1a2e;
            border: none;
            border-radius: 40px;
            padding: 14px 38px;
            font-weight: 800;
            font-size: 1.02rem;
            box-shadow: 0 12px 30px rgba(232, 163, 61, 0.4);
            transition: var(--transition);
        }

        .cta-panel .btn-cta-outline {
            border: 2px solid rgba(255, 255, 255, 0.4);
            background: transparent;
            color: #fff;
            border-radius: 40px;
            padding: 12px 34px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }

        .cta-panel .btn-cta-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 18px 36px rgba(232, 163, 61, 0.5);
        }

        .cta-panel .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-3px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 70px 0 30px;
            margin-top: 80px;
            color: rgba(255, 255, 255, 0.7);
        }

        .site-footer .navbar-brand {
            color: #fff !important;
            font-size: 1.25rem;
        }

        .footer-brand p {
            margin-top: 16px;
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-col {
            margin-top: 10px;
        }

        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            padding: 0;
            margin: 0;
        }

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

        .footer-col ul a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 26px;
            margin-top: 46px;
            text-align: center;
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.88rem;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-panel {
                padding: 12px 20px;
            }

            .nav-panel .nav-link {
                font-size: 0.9rem;
                padding: 8px 12px !important;
            }

            .category-banner .banner-content {
                max-width: 80%;
            }

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

            .stat-row {
                padding: 30px 20px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 10px 0;
            }

            .nav-panel {
                border-radius: 20px;
            }

            .nav-panel .navbar-collapse {
                background: var(--bg-white);
                border-radius: 18px;
                margin-top: 16px;
                padding: 18px;
                box-shadow: var(--shadow-md);
            }

            .nav-panel .navbar-nav {
                gap: 4px;
            }

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

            .header-cta {
                margin-top: 14px;
                text-align: center;
            }

            .category-banner {
                padding: 36px 30px;
                border-radius: 20px;
            }

            .category-banner .banner-content {
                max-width: 100%;
            }

            .category-banner h1 {
                font-size: 1.9rem;
            }

            .category-banner p {
                font-size: 0.95rem;
            }

            .section-block {
                padding: 46px 0;
            }

            .section-header h2 {
                font-size: 1.7rem;
            }

            .stat-item {
                border-right: none;
                border-bottom: 1px solid var(--border-color);
                padding: 16px 10px;
            }

            .stat-item:last-child {
                border-bottom: none;
            }

            .promo-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .activity-timeline {
                padding: 24px 20px;
            }

            .activity-item {
                flex-direction: column;
                gap: 14px;
            }

            .steps-row {
                flex-direction: column;
                align-items: center;
            }

            .step-item {
                width: 100%;
                max-width: 280px;
                margin-bottom: 28px;
            }

            .step-item:not(:last-child)::after {
                content: '';
                position: absolute;
                bottom: -28px;
                right: 50%;
                transform: translateX(50%) rotate(90deg);
                top: auto;
            }

            .cta-panel {
                padding: 44px 24px;
                border-radius: 20px;
            }

            .cta-panel h2 {
                font-size: 1.5rem;
            }
        }

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

            .category-banner {
                padding: 30px 20px;
            }

            .category-banner h1 {
                font-size: 1.4rem;
            }

            .category-banner p {
                font-size: 0.88rem;
            }

            .banner-btns .btn,
            .banner-btns .btn-primary-cus,
            .banner-btns .btn-outline-cus {
                width: 100%;
                text-align: center;
            }

            .section-header h2 {
                font-size: 1.4rem;
            }

            .stat-item .num {
                font-size: 1.9rem;
            }

            .activity-date {
                width: 60px;
                height: 60px;
            }

            .activity-date .date-num {
                font-size: 1.4rem;
            }

            .rank-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .rank-value {
                position: absolute;
                bottom: 14px;
                right: 16px;
            }

            .faq-item summary {
                font-size: 0.9rem;
                padding: 16px 18px;
            }

            .faq-body {
                padding: 0 18px 18px;
            }

            .site-footer {
                padding: 48px 0 24px;
            }
        }