/* roulang page: index */
:root {
            --brand: #6d5dfc;
            --brand-dark: #5a4bd6;
            --brand-light: #8e82f8;
            --cyan: #00b8d9;
            --orange: #ffb454;
            --ink: #1d2a40;
            --ink-soft: #667385;
            --line: #e6eaf2;
            --bg-soft: #f5f7fd;
            --bg-dark: #0d1b2a;
            --radius-lg: 22px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 14px rgba(13, 27, 42, .06);
            --shadow-md: 0 10px 32px rgba(13, 27, 42, .09);
            --shadow-lg: 0 18px 50px rgba(13, 27, 42, .14);
            --transition: all .3s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            color: var(--ink);
            background: #fff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: var(--brand);
            transition: var(--transition);
        }
        a:hover {
            color: var(--brand-dark);
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-padding {
            padding: 90px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -.01em;
            margin-bottom: 12px;
            color: var(--ink);
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--ink-soft);
            max-width: 640px;
            margin-bottom: 40px;
        }
        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }
        .section-head .section-title {
            margin-bottom: 0;
        }
        .text-brand {
            color: var(--brand) !important;
        }
        .bg-soft {
            background: var(--bg-soft);
        }
        .btn {
            border-radius: 50px;
            font-weight: 600;
            padding: 10px 24px;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-brand {
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
        }
        .btn-brand:hover {
            background: var(--brand-dark);
            border-color: var(--brand-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(109, 93, 252, .25);
        }
        .btn-outline-light {
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: #fff;
            color: var(--brand);
            border-color: #fff;
        }
        .btn-outline-brand {
            border-color: var(--brand);
            color: var(--brand);
        }
        .btn-outline-brand:hover {
            background: var(--brand);
            color: #fff;
        }
        .btn-lg {
            padding: 12px 32px;
            font-size: 1.05rem;
        }
        .badge-custom {
            display: inline-block;
            padding: 5px 16px;
            border-radius: 50px;
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: .02em;
        }
        .badge-brand {
            background: rgba(109, 93, 252, .12);
            color: var(--brand);
        }
        .badge-orange {
            background: rgba(255, 180, 84, .18);
            color: #b37400;
        }
        .badge-cyan {
            background: rgba(0, 184, 217, .14);
            color: #0082a0;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(230, 234, 242, .8);
        }
        .site-header .navbar {
            padding-top: 12px;
            padding-bottom: 12px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.45rem;
            color: var(--ink);
        }
        .navbar-brand:hover {
            color: var(--brand);
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--brand), var(--cyan));
            color: #fff;
            border-radius: 12px;
            font-size: 1.2rem;
            font-weight: 800;
            box-shadow: 0 4px 14px rgba(109, 93, 252, .3);
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--ink-soft);
            padding: 8px 20px;
            border-radius: 50px;
            margin: 0 2px;
            position: relative;
            font-size: .98rem;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--brand);
            background: rgba(109, 93, 252, .08);
        }
        .navbar-toggler {
            border: none;
            padding: 6px 10px;
            box-shadow: none !important;
            outline: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231d2a40' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        /* Hero */
        .hero-section {
            position: relative;
            padding: 110px 0 90px;
            background: linear-gradient(135deg, rgba(13, 27, 42, .82), rgba(30, 20, 60, .72)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(109, 93, 252, .25), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            backdrop-filter: blur(8px);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: .88rem;
            margin-bottom: 22px;
        }
        .hero-section h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -.01em;
        }
        .hero-section .lead {
            font-size: 1.12rem;
            color: rgba(255, 255, 255, .85);
            max-width: 620px;
            margin-bottom: 32px;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .hero-stats {
            margin-top: 60px;
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, .18);
        }
        .hero-stat {
            flex: 1;
            min-width: 120px;
        }
        .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: .88rem;
            color: rgba(255, 255, 255, .7);
        }
        /* Features */
        .feature-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .feature-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--brand), var(--cyan));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .feature-card:hover::after {
            opacity: 1;
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(109, 93, 252, .12), rgba(0, 184, 217, .12));
            color: var(--brand);
            font-size: 1.5rem;
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .feature-card p {
            color: var(--ink-soft);
            font-size: .95rem;
            margin-bottom: 0;
        }
        /* Category entry */
        .category-entry-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            height: 320px;
            display: flex;
            align-items: flex-end;
            color: #fff;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            border: none;
        }
        .category-entry-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }
        .category-entry-card .ce-bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .category-entry-card:hover .ce-bg {
            transform: scale(1.05);
        }
        .category-entry-card .ce-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 27, 42, .18), rgba(13, 27, 42, .82));
        }
        .category-entry-card .ce-content {
            position: relative;
            padding: 30px;
            z-index: 2;
            width: 100%;
        }
        .category-entry-card .ce-content h3 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 6px;
        }
        .category-entry-card .ce-content p {
            font-size: .93rem;
            color: rgba(255, 255, 255, .8);
            margin-bottom: 14px;
        }
        .category-entry-card .ce-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-weight: 600;
            font-size: .95rem;
            border-bottom: 2px solid rgba(255, 255, 255, .4);
            padding-bottom: 2px;
        }
        .category-entry-card .ce-link:hover {
            border-color: #fff;
            color: #fff;
        }
        /* News list */
        .news-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            margin-bottom: 16px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .news-card:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: .83rem;
            color: var(--ink-soft);
        }
        .news-card .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.45;
        }
        .news-card .news-title a {
            color: inherit;
        }
        .news-card .news-title a:hover {
            color: var(--brand);
        }
        .news-card .news-summary {
            color: var(--ink-soft);
            font-size: .92rem;
            line-height: 1.65;
        }
        .news-side {
            background: var(--bg-soft);
            border-radius: var(--radius-lg);
            padding: 30px;
            height: 100%;
        }
        .news-side h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .news-side h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 36px;
            height: 3px;
            border-radius: 4px;
            background: var(--brand);
        }
        .side-tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .side-tag-list a {
            display: inline-block;
            padding: 5px 14px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 50px;
            font-size: .84rem;
            color: var(--ink-soft);
            transition: var(--transition);
        }
        .side-tag-list a:hover {
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
        }
        /* Stats section */
        .stats-section {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, .88), rgba(30, 20, 60, .8)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            color: #fff;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        .stat-item {
            text-align: center;
            padding: 30px 16px;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-4px);
        }
        .stat-item .icon {
            font-size: 1.8rem;
            color: var(--cyan);
            margin-bottom: 10px;
        }
        .stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: .9rem;
            color: rgba(255, 255, 255, .7);
            margin-top: 4px;
        }
        /* Steps */
        .step-item {
            position: relative;
            padding: 30px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .step-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .step-num {
            width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--brand), var(--cyan));
            color: #fff;
            border-radius: 12px;
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 18px;
            box-shadow: 0 6px 18px rgba(109, 93, 252, .25);
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-item p {
            color: var(--ink-soft);
            font-size: .93rem;
            margin-bottom: 0;
        }
        /* Resource cards */
        .resource-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--line);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .resource-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-8px);
        }
        .resource-card .rc-img {
            width: 100%;
            height: 190px;
            object-fit: cover;
        }
        .resource-card .rc-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .resource-card .rc-tag {
            align-self: flex-start;
            margin-bottom: 12px;
        }
        .resource-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .resource-card p {
            color: var(--ink-soft);
            font-size: .92rem;
            flex: 1;
        }
        .resource-card .rc-link {
            font-weight: 600;
            font-size: .9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
        }
        /* FAQ */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-wrap .accordion-item {
            border: 1px solid var(--line);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            background: #fff;
        }
        .faq-wrap .accordion-button {
            font-weight: 600;
            color: var(--ink);
            padding: 20px 24px;
            background: #fff;
            box-shadow: none;
            border: none;
            font-size: 1rem;
        }
        .faq-wrap .accordion-button:not(.collapsed) {
            background: rgba(109, 93, 252, .04);
            color: var(--brand);
        }
        .faq-wrap .accordion-button:focus {
            box-shadow: none;
            border-color: var(--line);
        }
        .faq-wrap .accordion-body {
            padding: 4px 24px 20px;
            color: var(--ink-soft);
            line-height: 1.75;
        }
        /* CTA */
        .cta-section {
            position: relative;
            padding: 90px 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, .85), rgba(40, 20, 80, .75)), url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            color: #fff;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, .8);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .7);
            padding: 70px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 50px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul a {
            color: rgba(255, 255, 255, .65);
            font-size: .93rem;
            transition: var(--transition);
        }
        .site-footer ul a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-logo .brand-logo {
            background: linear-gradient(135deg, var(--brand), var(--cyan));
        }
        .footer-about p {
            font-size: .92rem;
            line-height: 1.75;
            margin-bottom: 20px;
            color: rgba(255, 255, 255, .6);
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .08);
            border-radius: 10px;
            color: rgba(255, 255, 255, .7);
            transition: var(--transition);
            font-size: .95rem;
        }
        .footer-social a:hover {
            background: var(--brand);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-contact p {
            font-size: .92rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .6);
        }
        .footer-contact i {
            color: var(--cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 20px 0;
            text-align: center;
            font-size: .88rem;
            color: rgba(255, 255, 255, .45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .6);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        /* Empty state */
        .empty-tip {
            padding: 30px;
            text-align: center;
            background: var(--bg-soft);
            border: 2px dashed var(--line);
            border-radius: var(--radius-lg);
            color: var(--ink-soft);
            font-size: .95rem;
        }
        /* Page banner */
        .page-banner {
            position: relative;
            padding: 70px 0 60px;
            background: linear-gradient(135deg, rgba(13, 27, 42, .8), rgba(30, 20, 60, .7)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            color: #fff;
        }
        .page-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .page-banner p {
            color: rgba(255, 255, 255, .8);
            max-width: 560px;
            margin-bottom: 0;
        }
        .page-banner .crumb {
            display: flex;
            gap: 8px;
            align-items: center;
            font-size: .88rem;
            color: rgba(255, 255, 255, .6);
            margin-bottom: 16px;
        }
        .page-banner .crumb a {
            color: rgba(255, 255, 255, .8);
        }
        .page-banner .crumb a:hover {
            color: #fff;
        }
        /* Article page */
        .article-main {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow-sm);
        }
        .article-main h1 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 18px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--line);
            margin-bottom: 28px;
            color: var(--ink-soft);
            font-size: .9rem;
        }
        .article-meta i {
            color: var(--brand);
            margin-right: 5px;
        }
        .article-body {
            font-size: 1.02rem;
            line-height: 1.9;
            color: var(--ink);
        }
        .article-body p {
            margin-bottom: 18px;
        }
        .article-body h2,
        .article-body h3 {
            margin-top: 30px;
            margin-bottom: 14px;
            font-weight: 700;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 20px 0;
        }
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-box h2 {
            font-size: 1.8rem;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--ink-soft);
            margin-bottom: 24px;
        }
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--line);
        }
        .article-nav a {
            max-width: 45%;
            font-size: .95rem;
            color: var(--ink-soft);
        }
        .article-nav a:hover {
            color: var(--brand);
        }
        /* Pagination */
        .pagination {
            justify-content: center;
            gap: 4px;
            margin-top: 40px;
        }
        .pagination .page-link {
            border: 1px solid var(--line);
            color: var(--ink);
            border-radius: 8px !important;
            min-width: 42px;
            text-align: center;
            font-weight: 500;
            transition: var(--transition);
            margin: 0 3px;
        }
        .pagination .page-link:hover {
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
        }
        .pagination .page-item.active .page-link {
            background: var(--brand);
            border-color: var(--brand);
            color: #fff;
        }
        /* Category tabs */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .category-tabs .tab-btn {
            padding: 8px 22px;
            border: 1px solid var(--line);
            border-radius: 50px;
            font-size: .92rem;
            color: var(--ink-soft);
            background: #fff;
            font-weight: 500;
            transition: var(--transition);
        }
        .category-tabs .tab-btn:hover,
        .category-tabs .tab-btn.active {
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
        }
        /* Guide cards */
        .guide-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            box-shadow: var(--shadow-sm);
        }
        .guide-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .guide-card .gc-img {
            height: 180px;
            object-fit: cover;
            width: 100%;
        }
        .guide-card .gc-body {
            padding: 26px;
        }
        .guide-card .gc-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .guide-card .gc-body p {
            color: var(--ink-soft);
            font-size: .92rem;
            margin-bottom: 14px;
        }
        /* Tips box */
        .tips-box {
            background: linear-gradient(135deg, rgba(109, 93, 252, .06), rgba(0, 184, 217, .06));
            border: 1px dashed var(--brand-light);
            border-radius: var(--radius-lg);
            padding: 30px;
        }
        .tips-box h4 {
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .tips-box ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .tips-box ul li {
            padding: 8px 0;
            color: var(--ink-soft);
            position: relative;
            padding-left: 28px;
        }
        .tips-box ul li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--brand);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .hero-section {
                padding: 70px 0 60px;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-stats {
                gap: 20px;
                padding-top: 24px;
            }
            .hero-stat .num {
                font-size: 1.5rem;
            }
            .article-main {
                padding: 24px 20px;
            }
            .article-main h1 {
                font-size: 1.5rem;
            }
            .category-entry-card {
                height: 260px;
            }
            .navbar-collapse {
                background: #fff;
                border-radius: var(--radius-md);
                padding: 16px;
                margin-top: 8px;
                box-shadow: var(--shadow-md);
            }
            .navbar-nav .nav-link {
                padding: 10px 16px;
                border-radius: 8px;
            }
        }
        @media (max-width: 520px) {
            .section-padding {
                padding: 46px 0;
            }
            .hero-section h1 {
                font-size: 1.7rem;
            }
            .hero-buttons .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .num {
                font-size: 1.4rem;
            }
            .article-nav {
                flex-direction: column;
            }
            .article-nav a {
                max-width: 100%;
            }
            .page-banner h1 {
                font-size: 1.7rem;
            }
            .hero-stats {
                gap: 14px;
            }
            .hero-stat {
                min-width: 90px;
            }
        }

/* roulang page: article */
:root {
            --brand-primary: #2b4bdf;
            --brand-primary-dark: #1c34a8;
            --brand-secondary: #ff8a3d;
            --brand-accent: #0fc2b4;
            --text-main: #18233f;
            --text-secondary: #5b6880;
            --text-light: #8b98ad;
            --bg-body: #f4f6fb;
            --bg-white: #ffffff;
            --bg-dark: #0f1d3a;
            --bg-dark-2: #16294d;
            --border-light: #e5eaf2;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-xs: 0 2px 6px rgba(24, 35, 63, 0.04);
            --shadow-sm: 0 4px 14px rgba(24, 35, 63, 0.06);
            --shadow-md: 0 10px 30px rgba(24, 35, 63, 0.08);
            --shadow-lg: 0 18px 48px rgba(24, 35, 63, 0.12);
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 28px;
            --space-lg: 48px;
            --space-xl: 72px;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        body {
            margin: 0;
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

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

        .container {
            max-width: 1200px;
        }

        .section {
            padding: var(--space-xl) 0;
        }

        .section-head {
            margin-bottom: var(--space-lg);
        }

        .section-head .section-sub {
            color: var(--brand-primary);
            font-weight: 600;
            letter-spacing: 0.08em;
            font-size: 15px;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-main);
            margin: 8px 0 12px;
        }

        .section-head p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 720px;
        }

        .section-head.center {
            text-align: center;
        }

        .section-head.center p {
            margin-left: auto;
            margin-right: auto;
        }

        .text-muted {
            color: var(--text-secondary) !important;
        }

        .text-brand {
            color: var(--brand-primary) !important;
        }

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

        .bg-soft {
            background: var(--bg-body);
        }

        .bg-dark-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }

        .bg-dark-section::before {
            content: "";
            position: absolute;
            right: -10%;
            top: -30%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(43, 75, 223, 0.35) 0%, transparent 70%);
            pointer-events: none;
        }

        .btn {
            border-radius: var(--radius-sm);
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 10px 22px;
            transition: all 0.25s ease;
            border: 2px solid transparent;
        }

        .btn-brand {
            background: var(--brand-primary);
            color: #fff;
            border-color: var(--brand-primary);
            box-shadow: 0 6px 18px rgba(43, 75, 223, 0.28);
        }

        .btn-brand:hover,
        .btn-brand:focus {
            background: var(--brand-primary-dark);
            border-color: var(--brand-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(43, 75, 223, 0.36);
        }

        .btn-outline-brand {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background: transparent;
        }

        .btn-outline-brand:hover {
            background: var(--brand-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(43, 75, 223, 0.22);
        }

        .btn-secondary-custom {
            background: var(--brand-secondary);
            color: #fff;
            border-color: var(--brand-secondary);
            box-shadow: 0 6px 18px rgba(255, 138, 61, 0.28);
        }

        .btn-secondary-custom:hover {
            background: #f0701c;
            border-color: #f0701c;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-light {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.35);
            color: #fff;
            backdrop-filter: blur(6px);
        }

        .btn-light:hover {
            background: rgba(255, 255, 255, 0.26);
            color: #fff;
            transform: translateY(-2px);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }

        .badge-brand {
            background: rgba(43, 75, 223, 0.12);
            color: var(--brand-primary);
        }

        .badge-secondary {
            background: rgba(255, 138, 61, 0.14);
            color: #d96e1f;
        }

        .badge-accent {
            background: rgba(15, 194, 180, 0.14);
            color: #0a9d91;
        }

        .badge-soft-dark {
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1080;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.02em;
        }

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

        .brand-logo {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--brand-primary) 0%, #4f6bee 100%);
            color: #fff;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 900;
            box-shadow: 0 6px 16px rgba(43, 75, 223, 0.35);
        }

        .navbar-nav .nav-item {
            margin: 0 4px;
        }

        .navbar-nav .nav-link {
            font-weight: 600;
            color: var(--text-secondary);
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            position: relative;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: var(--brand-primary);
            background: rgba(43, 75, 223, 0.06);
        }

        .navbar-nav .nav-link.active {
            color: var(--brand-primary);
            background: rgba(43, 75, 223, 0.1);
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 2px;
            width: 22px;
            height: 3px;
            border-radius: 2px;
            background: var(--brand-primary);
        }

        .navbar-toggler {
            border: none;
            padding: 6px 10px;
            border-radius: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(43, 75, 223, 0.15);
        }

        .navbar-toggler-icon {
            width: 22px;
            height: 2px;
            background: var(--text-main);
            position: relative;
            border-radius: 2px;
            display: inline-block;
        }

        .navbar-toggler-icon::before,
        .navbar-toggler-icon::after {
            content: "";
            position: absolute;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
        }

        .navbar-toggler-icon::before {
            top: -7px;
        }

        .navbar-toggler-icon::after {
            top: 7px;
        }

        @media (max-width: 991px) {
            .navbar-collapse {
                background: #fff;
                border-radius: var(--radius-md);
                padding: 16px;
                margin-top: 12px;
                box-shadow: var(--shadow-md);
                border: 1px solid var(--border-light);
            }

            .navbar-nav .nav-link {
                padding: 12px 16px;
                border-radius: 10px;
            }

            .navbar-nav .nav-link.active::after {
                display: none;
            }

            .btn-brand.btn-sm {
                margin-top: 12px;
                width: 100%;
            }
        }

        .page-hero {
            background-size: cover;
            background-position: center;
            background-color: var(--bg-dark-2);
            position: relative;
            padding: 64px 0;
            color: #fff;
            border-bottom: 4px solid rgba(255, 255, 255, 0.04);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 29, 58, 0.88) 0%, rgba(15, 29, 58, 0.62) 60%, rgba(15, 29, 58, 0.35) 100%);
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.72);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.78);
            text-decoration: none;
            transition: color 0.2s;
        }

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

        .breadcrumb-nav .sep {
            color: rgba(255, 255, 255, 0.42);
        }

        .breadcrumb-nav .current {
            color: #fff;
            max-width: 300px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.28);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 999px;
            backdrop-filter: blur(6px);
            margin-bottom: 18px;
        }

        .page-hero h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 14px;
            max-width: 800px;
        }

        .page-hero .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin-bottom: 18px;
        }

        .hero-meta {
            display: flex;
            gap: 22px;
            align-items: center;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            flex-wrap: wrap;
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .hero-meta i {
            color: var(--brand-secondary);
        }

        /* 文章主体 */
        .article-main {
            padding: var(--space-xl) 0 var(--space-lg);
        }

        .article-wrapper {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 36px;
        }

        .article-body {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            padding: 40px;
        }

        .article-body.loading {
            min-height: 320px;
        }

        .article-empty {
            text-align: center;
            padding: 60px 20px;
        }

        .article-empty i {
            font-size: 52px;
            color: var(--text-light);
            margin-bottom: 18px;
        }

        .article-empty h2 {
            font-size: 26px;
            margin-bottom: 12px;
        }

        .article-empty p {
            color: var(--text-secondary);
            margin-bottom: 28px;
        }

        .article-cover {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 28px;
            box-shadow: var(--shadow-md);
        }

        .article-cover img {
            width: 100%;
            display: block;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: #2c3650;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 800;
            margin: 40px 0 16px;
            color: var(--text-main);
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border-light);
            position: relative;
        }

        .article-content h2::before {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 48px;
            height: 2px;
            background: var(--brand-primary);
            border-radius: 2px;
        }

        .article-content h3 {
            font-size: 22px;
            font-weight: 700;
            margin: 30px 0 12px;
            color: var(--text-main);
        }

        .article-content p {
            margin: 0 0 18px;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 18px 22px;
            padding: 0;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            margin: 24px 0;
            padding: 20px 24px;
            background: #f8faff;
            border-left: 4px solid var(--brand-primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 16px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-content strong {
            color: var(--text-main);
            font-weight: 700;
        }

        .article-content a {
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-tags {
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .article-tags .tag {
            background: var(--bg-body);
            color: var(--text-secondary);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s;
        }

        .article-tags .tag:hover {
            background: var(--brand-primary);
            color: #fff;
        }

        .article-share {
            display: flex;
            gap: 10px;
            align-items: center;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--bg-body);
            color: var(--text-secondary);
            transition: all 0.22s;
        }

        .share-btn:hover {
            background: var(--brand-primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* 侧边栏 */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            padding: 24px;
        }

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

        .sidebar-card .card-title i {
            color: var(--brand-primary);
            font-size: 18px;
        }

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

        .info-list li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border-light);
            font-size: 15px;
        }

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

        .info-list li .label {
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .info-list li .value {
            font-weight: 600;
            color: var(--text-main);
            text-align: right;
        }

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

        .category-list li {
            margin-bottom: 10px;
        }

        .category-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 14px;
            background: var(--bg-body);
            border-radius: 10px;
            color: var(--text-main);
            font-weight: 600;
            transition: all 0.22s;
            font-size: 15px;
        }

        .category-list a:hover {
            background: var(--brand-primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(43, 75, 223, 0.22);
        }

        .category-list a i {
            color: var(--text-light);
            font-size: 13px;
            transition: color 0.22s;
        }

        .category-list a:hover i {
            color: #fff;
        }

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

        .hot-list li {
            margin-bottom: 10px;
        }

        .hot-list a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 10px;
            border-radius: 10px;
            transition: all 0.22s;
            border: 1px solid transparent;
        }

        .hot-list a:hover {
            background: var(--bg-body);
            border-color: var(--border-light);
        }

        .hot-list .badge {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 700;
            background: var(--bg-body);
            color: var(--text-light);
        }

        .hot-list a:nth-child(1) .badge {
            background: var(--brand-primary);
            color: #fff;
        }

        .hot-list a:nth-child(2) .badge {
            background: var(--brand-secondary);
            color: #fff;
        }

        .hot-list .hot-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--brand-primary) 0%, #3f5aee 100%);
            border: none;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .sidebar-cta::before {
            content: "";
            position: absolute;
            right: -30px;
            top: -30px;
            width: 130px;
            height: 130px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .sidebar-cta .card-title {
            color: #fff;
        }

        .sidebar-cta p {
            color: rgba(255, 255, 255, 0.88);
            font-size: 14px;
            margin-bottom: 18px;
        }

        .sidebar-cta .btn-light {
            background: #fff;
            color: var(--brand-primary);
            border: none;
            font-weight: 700;
        }

        .sidebar-cta .btn-light:hover {
            background: #eef1ff;
            color: var(--brand-primary-dark);
        }

        /* 相关推荐 */
        .related-section {
            background: var(--bg-white);
            padding: var(--space-xl) 0;
        }

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

        .related-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-xs);
            display: block;
            color: var(--text-main);
        }

        .related-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            color: var(--text-main);
        }

        .related-card .cover {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

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

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

        .related-card .badge {
            position: absolute;
            top: 12px;
            left: 12px;
        }

        .related-card .related-body {
            padding: 20px;
        }

        .related-card h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin: 0 0 10px;
            color: var(--text-main);
        }

        .related-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 14px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .related-meta {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .related-card .related-meta i {
            margin-right: 4px;
        }

        /* 数据板块 */
        .stats-section {
            background: var(--bg-dark);
            color: #fff;
            padding: var(--space-xl) 0;
            position: relative;
            overflow: hidden;
        }

        .stats-section::after {
            content: "";
            position: absolute;
            left: -8%;
            bottom: -40%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 138, 61, 0.18) 0%, transparent 70%);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
            z-index: 2;
        }

        .stat-item {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            transition: all 0.3s;
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.24);
        }

        .stat-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--brand-secondary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
        }

        /* FAQ */
        .faq-section {
            padding: var(--space-xl) 0;
        }

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

        .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-xs);
            transition: box-shadow 0.25s;
        }

        .accordion-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .accordion-button {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            padding: 18px 22px;
            background: #fff;
            box-shadow: none !important;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(43, 75, 223, 0.04);
            color: var(--brand-primary);
        }

        .accordion-button::after {
            background-size: 16px;
        }

        .accordion-body {
            padding: 16px 22px 22px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            background: #fff;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--brand-primary) 0%, #4f6bee 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .cta-section::after {
            content: "";
            position: absolute;
            left: 12%;
            bottom: -80px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.88);
            font-size: 17px;
            margin-bottom: 30px;
        }

        .cta-inner .btn-light {
            background: #fff;
            color: var(--brand-primary);
            border: none;
            font-size: 16px;
            padding: 14px 38px;
            border-radius: 999px;
            font-weight: 700;
            box-shadow: 0 8px 26px rgba(0, 0, 0, 0.15);
            transition: all 0.25s;
        }

        .cta-inner .btn-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 34px rgba(0, 0, 0, 0.2);
            background: #f4f6ff;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding-top: 72px;
            position: relative;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-about p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            border-radius: 10px;
            transition: all 0.22s;
            font-size: 16px;
        }

        .footer-social a:hover {
            background: var(--brand-primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            border-radius: 2px;
            background: var(--brand-secondary);
        }

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

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

        .footer-col ul a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: all 0.2s;
        }

        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-contact p {
            font-size: 14px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-contact i {
            color: var(--brand-secondary);
            width: 18px;
        }

        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-bottom p {
            margin: 0;
        }

        /* 响应式 */
        @media (max-width: 991px) {
            .page-hero {
                padding: 48px 0;
            }

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

            .article-wrapper {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

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

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

        @media (max-width: 767px) {
            .section {
                padding: 48px 0;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .article-body {
                padding: 24px;
            }

            .article-content {
                font-size: 15px;
            }

            .article-content h2 {
                font-size: 22px;
            }

            .hero-meta {
                gap: 14px;
            }

            .stats-section {
                padding: 48px 0;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-item {
                padding: 22px 14px;
            }

            .stat-num {
                font-size: 32px;
            }

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

            .cta-inner h2 {
                font-size: 28px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 520px) {
            .page-hero {
                padding: 36px 0;
            }

            .page-hero h1 {
                font-size: 24px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .breadcrumb-nav {
                font-size: 13px;
            }

            .breadcrumb-nav .current {
                max-width: 160px;
            }

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

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .stat-item {
                padding: 18px 10px;
            }

            .stat-num {
                font-size: 26px;
            }

            .stat-label {
                font-size: 13px;
            }

            .article-body {
                padding: 18px;
                border-radius: var(--radius-md);
            }

            .sidebar-card {
                padding: 18px;
            }

            .footer-social a {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }

            .footer-bottom {
                font-size: 12px;
            }

            .footer-bottom p {
                line-height: 1.7;
            }
        }

/* roulang page: category1 */
:root {
    --brand: #5b5bd6;
    --brand-dark: #4a45c8;
    --brand-light: #eef0ff;
    --secondary: #00c9a7;
    --warm: #ff9f43;
    --dark: #141430;
    --dark-soft: #1e1e3f;
    --bg: #f5f7fb;
    --white: #ffffff;
    --text: #2d2d4a;
    --text-light: #6b6b8d;
    --border: #e4e8f2;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 8px 32px rgba(60, 80, 200, 0.08);
    --shadow-lg: 0 16px 48px rgba(60, 80, 200, 0.14);
    --transition: 0.3s ease;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.25s ease;
}

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

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

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

/* ===== Button ===== */
.btn {
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-brand {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
    color: #fff;
    border: none;
    box-shadow: 0 6px 20px rgba(91, 91, 214, 0.3);
}

.btn-brand:hover,
.btn-brand:focus {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(91, 91, 214, 0.4);
}

.btn-ghost {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.6);
    color: #fff;
}

.btn-ghost:hover,
.btn-ghost:focus {
    background: rgba(255, 255, 255, 0.12);
    border-color: #fff;
    color: #fff;
    transform: translateY(-2px);
}

.btn-outline-brand {
    background: transparent;
    border: 2px solid var(--brand);
    color: var(--brand);
}

.btn-outline-brand:hover,
.btn-outline-brand:focus {
    background: var(--brand);
    color: #fff;
    transform: translateY(-2px);
}

/* ===== Header / Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1050;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}

.navbar {
    padding: 14px 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: var(--dark);
}

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

.brand-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--brand) 0%, var(--secondary) 100%);
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    border-radius: 12px;
    box-shadow: 0 6px 16px rgba(91, 91, 214, 0.35);
}

.navbar .nav-link {
    color: var(--text);
    font-weight: 500;
    font-size: 15px;
    padding: 8px 18px !important;
    border-radius: 30px;
    transition: all 0.25s ease;
}

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

.navbar .nav-link.active {
    color: var(--brand) !important;
    background: var(--brand-light);
    font-weight: 600;
}

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

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

@media (max-width: 991px) {
    .navbar-collapse {
        background: #fff;
        border-radius: 16px;
        padding: 16px;
        box-shadow: var(--shadow-lg);
        margin-top: 12px;
    }
    .navbar .nav-link {
        padding: 10px 14px !important;
    }
    .navbar-collapse .btn {
        margin-top: 12px;
    }
}

/* ===== Hero Banner ===== */
.page-hero {
    position: relative;
    background: linear-gradient(120deg, rgba(18, 18, 46, 0.88) 0%, rgba(30, 30, 63, 0.78) 50%, rgba(70, 65, 200, 0.65) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
    color: #fff;
    padding: 90px 0;
    overflow: hidden;
}

.page-hero::after {
    content: '';
    position: absolute;
    bottom: -60px;
    right: -40px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 201, 167, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 50px;
    padding: 6px 18px;
    font-size: 14px;
    margin-bottom: 20px;
    backdrop-filter: blur(4px);
}

.hero-badge i {
    color: var(--warm);
}

.hero-title {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 18px;
    letter-spacing: 1px;
}

.hero-title span {
    background: linear-gradient(90deg, #fff 30%, #a5d8ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 17px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
    max-width: 640px;
    margin-bottom: 30px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
}

.hero-info-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.hero-info-card {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    backdrop-filter: blur(8px);
    transition: background 0.3s ease;
}

.hero-info-card:hover {
    background: rgba(255, 255, 255, 0.18);
}

.hero-info-card .num {
    font-size: 30px;
    font-weight: 800;
    color: #fff;
}

.hero-info-card .label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 4px;
}

@media (max-width: 767px) {
    .page-hero {
        padding: 60px 0;
        text-align: center;
    }
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-actions {
        justify-content: center;
    }
    .hero-info-cards {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
        margin-top: 30px;
    }
    .hero-info-card .num {
        font-size: 22px;
    }
}

/* ===== Section ===== */
.section {
    padding: 80px 0;
}

.section.bg-white {
    background: #fff;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

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

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--brand-light);
    color: var(--brand);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 16px;
    border-radius: 50px;
    margin-bottom: 14px;
}

.section-title {
    font-size: clamp(26px, 3.5vw, 36px);
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.section-sub {
    font-size: 15.5px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ===== Stats Section ===== */
.stats-section {
    margin-top: -50px;
    position: relative;
    z-index: 2;
}

.stat-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 30px 24px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(228, 232, 242, 0.6);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 48px rgba(60, 80, 200, 0.16);
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 14px;
}

.stat-icon.purple {
    background: var(--brand-light);
    color: var(--brand);
}

.stat-icon.green {
    background: rgba(0, 201, 167, 0.12);
    color: var(--secondary);
}

.stat-icon.orange {
    background: rgba(255, 159, 67, 0.14);
    color: var(--warm);
}

.stat-icon.blue {
    background: rgba(70, 130, 255, 0.12);
    color: #4a82f7;
}

.stat-num {
    font-size: 34px;
    font-weight: 800;
    color: var(--dark);
    line-height: 1.2;
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 4px;
}

/* ===== Feature Cards ===== */
.feature-card {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
    height: 100%;
}

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

.feature-card .card-img {
    position: relative;
    height: 220px;
    overflow: hidden;
}

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

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

.feature-card .card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(20, 20, 48, 0.35) 100%);
}

.feature-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    background: rgba(255, 255, 255, 0.92);
    color: var(--brand);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 50px;
    backdrop-filter: blur(4px);
}

.feature-body {
    padding: 24px;
}

.feature-body h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
    line-height: 1.5;
}

.feature-body h3 a:hover {
    color: var(--brand);
}

.feature-body p {
    font-size: 14.5px;
    color: var(--text-light);
    line-height: 1.75;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.feature-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-light);
}

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

/* ===== News List + Sidebar ===== */
.news-article {
    display: flex;
    gap: 20px;
    background: #fff;
    border-radius: var(--radius);
    padding: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.news-article:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.news-thumb {
    position: relative;
    flex: 0 0 240px;
    height: 150px;
    border-radius: 12px;
    overflow: hidden;
}

.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-tag {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background: rgba(91, 91, 214, 0.92);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 12px;
    border-radius: 50px;
}

.news-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-info h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.5;
    margin-bottom: 8px;
}

.news-info h3 a:hover {
    color: var(--brand);
}

.news-info p {
    font-size: 14.5px;
    color: var(--text-light);
    line-height: 1.75;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 0;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 13px;
    color: var(--text-light);
    margin-top: 12px;
}

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

.news-meta .read-more {
    margin-left: auto;
    color: var(--brand);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.news-meta .read-more:hover {
    color: var(--brand-dark);
    gap: 8px;
}

@media (max-width: 767px) {
    .news-article {
        flex-direction: column;
    }
    .news-thumb {
        flex: none;
        width: 100%;
        height: 190px;
    }
}

/* ===== Sidebar ===== */
.sidebar-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.sidebar-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-title i {
    color: var(--brand);
}

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

.hot-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid #f0f2f8;
}

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

.hot-rank {
    width: 26px;
    height: 26px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    background: #f0f1f8;
    color: var(--text-light);
    flex-shrink: 0;
}

.hot-item:nth-child(1) .hot-rank {
    background: linear-gradient(135deg, #ff9f43, #ff7543);
    color: #fff;
}

.hot-item:nth-child(2) .hot-rank {
    background: linear-gradient(135deg, #6c8cff, #5b5bd6);
    color: #fff;
}

.hot-item:nth-child(3) .hot-rank {
    background: linear-gradient(135deg, #00c9a7, #00a884);
    color: #fff;
}

.hot-link {
    flex: 1;
    font-size: 14px;
    color: var(--text);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.hot-link:hover {
    color: var(--brand);
}

.hot-views {
    font-size: 12px;
    color: var(--text-light);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Tag cloud */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-cloud .tag {
    display: inline-block;
    background: #f3f4fb;
    color: var(--text);
    font-size: 13px;
    padding: 6px 16px;
    border-radius: 50px;
    transition: all 0.25s ease;
    border: 1px solid transparent;
}

.tag-cloud .tag:hover {
    background: var(--brand-light);
    color: var(--brand);
    border-color: rgba(91, 91, 214, 0.2);
}

.tag-cloud .tag i {
    font-size: 12px;
    margin-right: 4px;
}

/* ===== Topics ===== */
.topic-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 30px 24px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    height: 100%;
    text-align: center;
    transition: all 0.35s ease;
}

.topic-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(91, 91, 214, 0.25);
}

.topic-icon {
    width: 60px;
    height: 60px;
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin-bottom: 18px;
    background: var(--brand-light);
    color: var(--brand);
}

.topic-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.topic-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 12px;
}

.topic-count {
    font-size: 13px;
    font-weight: 600;
    color: var(--secondary);
}

.topic-card.t-green .topic-icon {
    background: rgba(0, 201, 167, 0.12);
    color: var(--secondary);
}

.topic-card.t-orange .topic-icon {
    background: rgba(255, 159, 67, 0.14);
    color: var(--warm);
}

.topic-card.t-blue .topic-icon {
    background: rgba(70, 130, 255, 0.12);
    color: #4a82f7;
}

/* ===== Flow ===== */
.flow-section {
    background: var(--dark);
    color: #fff;
}

.flow-section .section-title {
    color: #fff;
}

.flow-section .section-sub {
    color: rgba(255, 255, 255, 0.7);
}

.flow-step {
    position: relative;
    text-align: center;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    height: 100%;
    transition: background 0.3s ease;
}

.flow-step:hover {
    background: rgba(255, 255, 255, 0.1);
}

.flow-step .step-num {
    position: absolute;
    top: 14px;
    right: 18px;
    font-size: 42px;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.1);
    line-height: 1;
}

.flow-step .step-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--brand), var(--secondary));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 16px;
    box-shadow: 0 8px 24px rgba(91, 91, 214, 0.4);
}

.flow-step h4 {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.flow-step p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ===== FAQ ===== */
.accordion-item {
    border: 1px solid var(--border);
    border-radius: var(--radius) !important;
    margin-bottom: 14px;
    background: #fff;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.accordion-button {
    font-size: 15.5px;
    font-weight: 600;
    color: var(--dark);
    background: #fff;
    padding: 18px 24px;
    transition: color 0.3s ease;
}

.accordion-button:hover {
    color: var(--brand);
}

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

.accordion-button:focus {
    box-shadow: none;
    border-color: rgba(91, 91, 214, 0.2);
}

.accordion-button::after {
    background-size: 14px;
}

.accordion-body {
    padding: 18px 24px 22px;
    font-size: 14.5px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
    background: linear-gradient(120deg, var(--brand) 0%, var(--brand-dark) 50%, #3d3a9e 100%);
    color: #fff;
    padding: 70px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -80px;
    left: -60px;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -100px;
    right: -40px;
    width: 360px;
    height: 360px;
    background: rgba(0, 201, 167, 0.2);
    border-radius: 50%;
}

.cta-content {
    position: relative;
    z-index: 2;
}

.cta-content h2 {
    font-size: clamp(26px, 3.5vw, 38px);
    font-weight: 800;
    margin-bottom: 14px;
}

.cta-content p {
    font-size: 16px;
    opacity: 0.85;
    max-width: 520px;
    margin-bottom: 26px;
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
}

.btn-light-brand {
    background: #fff;
    color: var(--brand);
    border: none;
    font-weight: 600;
    border-radius: 50px;
    padding: 10px 30px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.btn-light-brand:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.2);
    color: var(--brand-dark);
}

.btn-outline-white {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.75);
    color: #fff;
}

.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    transform: translateY(-2px);
}

/* ===== Footer ===== */
.site-footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.75);
    padding: 70px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 50px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}

.footer-logo .brand-logo {
    width: 34px;
    height: 34px;
    font-size: 17px;
}

.footer-about p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 18px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.08);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: var(--brand);
    color: #fff;
    transform: translateY(-3px);
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

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

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

.footer-col ul li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: all 0.25s ease;
}

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

.footer-contact p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact i {
    color: var(--secondary);
    width: 18px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
}

@media (max-width: 991px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 575px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .section {
        padding: 60px 0;
    }
    .news-thumb {
        flex-basis: 200px;
        height: 130px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 50px 0;
    }
    .news-thumb {
        flex: none;
        width: 100%;
        height: 180px;
    }
    .news-meta {
        flex-wrap: wrap;
        gap: 10px;
    }
    .news-meta .read-more {
        margin-left: 0;
    }
    .stats-section {
        margin-top: -30px;
    }
    .hero-info-cards {
        margin-top: 30px;
    }
}

@media (max-width: 520px) {
    body {
        font-size: 15px;
    }
    .section {
        padding: 40px 0;
    }
    .hero-title {
        font-size: 28px;
    }
    .hero-desc {
        font-size: 15px;
    }
    .hero-info-cards {
        grid-template-columns: 1fr;
    }
    .hero-info-card {
        padding: 14px;
    }
    .stat-num {
        font-size: 26px;
    }
    .feature-card .card-img {
        height: 170px;
    }
    .news-article {
        padding: 12px;
        gap: 12px;
    }
    .news-thumb {
        height: 160px;
    }
    .accordion-button {
        font-size: 14.5px;
        padding: 15px 18px;
    }
    .cta-section {
        padding: 50px 0;
    }
}

/* roulang page: category2 */
:root {
            --brand: #e8541e;
            --brand-dark: #d14417;
            --brand-light: #fff3ed;
            --accent: #1e3a5f;
            --accent-dark: #14213d;
            --bg: #f5f6fa;
            --card-bg: #ffffff;
            --text: #141824;
            --text-weak: #667085;
            --border: #e8eaf0;
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 12px 40px rgba(20, 24, 50, .08);
            --shadow-hover: 0 20px 52px rgba(20, 24, 50, .15);
            --spacer: 96px;
            --font-base: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-base);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s;
        }
        img {
            max-width: 100%;
            display: block;
        }
        ::selection {
            background: rgba(232, 84, 30, .18);
            color: var(--brand-dark);
        }
        .container {
            max-width: 1240px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(232, 234, 240, .85);
            box-shadow: 0 1px 0 rgba(255, 255, 255, .6);
        }
        .site-header .navbar {
            padding: 14px 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.45rem;
            color: var(--text);
            letter-spacing: -.01em;
        }
        .navbar-brand:hover {
            color: var(--text);
        }
        .brand-logo {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--brand), #ff8a3d);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            box-shadow: 0 6px 18px rgba(232, 84, 30, .3);
            flex-shrink: 0;
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            font-size: .98rem;
            color: var(--text);
            padding: 8px 18px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all .25s;
        }
        .navbar-nav .nav-link:hover {
            color: var(--brand);
            background: var(--brand-light);
        }
        .navbar-nav .nav-link.active {
            color: var(--brand);
            background: var(--brand-light);
            font-weight: 700;
        }
        .btn-brand {
            background: linear-gradient(135deg, var(--brand), #ff8a3d);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 10px 26px;
            font-weight: 700;
            font-size: .95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 8px 22px rgba(232, 84, 30, .32);
            transition: all .3s ease;
        }
        .btn-brand:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(232, 84, 30, .4);
            color: #fff;
        }
        .btn-brand:active {
            transform: translateY(0);
            box-shadow: 0 6px 14px rgba(232, 84, 30, .3);
        }
        .btn-brand:focus-visible,
        .nav-link:focus-visible,
        .btn-ghost:focus-visible {
            outline: 3px solid rgba(232, 84, 30, .35);
            outline-offset: 2px;
        }
        .navbar-toggler {
            border: none;
            padding: 8px 12px;
            border-radius: 10px;
            background: var(--brand-light);
            box-shadow: none;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(232, 84, 30, .2);
        }
        .navbar-toggler-icon {
            background-image: none;
            display: inline-block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 4px;
            position: relative;
        }
        .navbar-toggler-icon::before,
        .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--text);
            border-radius: 4px;
        }
        .navbar-toggler-icon::before {
            top: -7px;
        }
        .navbar-toggler-icon::after {
            top: 7px;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 110px 0 96px;
            background: linear-gradient(135deg, #14213d 0%, #1e3a5f 55%, #243b55 100%);
            color: #fff;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: .38;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: -100px;
            right: -80px;
            width: 460px;
            height: 460px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 84, 30, .32), transparent 68%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .22);
            padding: 8px 18px;
            border-radius: 999px;
            font-size: .88rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 22px;
            backdrop-filter: blur(6px);
        }
        .hero-badge i {
            color: #ffb78c;
        }
        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 800;
            letter-spacing: -.02em;
            line-height: 1.18;
            margin-bottom: 18px;
        }
        .hero-title .text-grad {
            background: linear-gradient(90deg, #ff8a3d, #ffc069);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-sub {
            font-size: 1.12rem;
            line-height: 1.85;
            color: rgba(255, 255, 255, .86);
            max-width: 740px;
            margin: 0 auto 34px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 42px;
        }
        .btn-ghost {
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .28);
            color: #fff;
            border-radius: 999px;
            padding: 11px 28px;
            font-weight: 700;
            font-size: .95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all .3s;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, .18);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-search {
            display: flex;
            max-width: 540px;
            margin: 0 auto;
            background: #fff;
            border-radius: 999px;
            padding: 6px 6px 6px 6px;
            box-shadow: 0 18px 50px rgba(0, 0, 0, .22);
            gap: 6px;
        }
        .hero-search input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 11px 22px;
            font-size: .95rem;
            color: var(--text);
            border-radius: 999px;
            outline: none;
            min-width: 0;
        }
        .hero-search input::placeholder {
            color: #9aa3b2;
        }
        .hero-search .btn {
            border-radius: 999px;
            padding: 10px 24px;
            flex-shrink: 0;
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: var(--spacer) 0;
        }
        .bg-soft {
            background: #eef0f6;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            background: var(--brand-light);
            color: var(--brand);
            border-radius: 999px;
            font-weight: 700;
            font-size: .85rem;
            letter-spacing: .04em;
            margin-bottom: 16px;
        }
        .section-title {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -.02em;
            margin-bottom: 14px;
            color: var(--text);
            line-height: 1.25;
        }
        .section-desc {
            color: var(--text-weak);
            font-size: 1.05rem;
            max-width: 720px;
            margin: 0 auto 44px;
            line-height: 1.8;
        }

        /* ===== Feature Cards ===== */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 34px 30px;
            height: 100%;
            box-shadow: var(--shadow);
            transition: all .35s ease;
            position: relative;
            overflow: hidden;
        }
        .feature-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--brand), #ff8a3d);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .4s ease;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(232, 84, 30, .2);
        }
        .feature-card:hover::after {
            transform: scaleX(1);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--brand-light);
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 22px;
        }
        .feature-card h3 {
            font-size: 1.18rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--text-weak);
            font-size: .95rem;
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ===== Play Cards ===== */
        .play-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            height: 100%;
            box-shadow: var(--shadow);
            transition: all .35s ease;
            display: flex;
            flex-direction: column;
        }
        .play-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }
        .play-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .play-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .7s ease;
        }
        .play-card:hover .card-img img {
            transform: scale(1.07);
        }
        .play-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(15, 23, 42, .25));
        }
        .play-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            color: var(--brand);
            font-size: .78rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, .1);
        }
        .play-card .card-body {
            padding: 26px 26px 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .play-card .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .play-card .card-text {
            color: var(--text-weak);
            font-size: .93rem;
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--brand);
            font-weight: 700;
            font-size: .92rem;
            transition: gap .3s;
        }
        .card-link:hover {
            gap: 14px;
            color: var(--brand-dark);
        }

        /* ===== Steps ===== */
        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 38px 28px;
            text-align: center;
            height: 100%;
            box-shadow: var(--shadow);
            position: relative;
            transition: all .35s;
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand), #ff8a3d);
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            box-shadow: 0 10px 24px rgba(232, 84, 30, .28);
        }
        .step-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            color: var(--text-weak);
            font-size: .93rem;
            line-height: 1.75;
            margin-bottom: 0;
        }
        .step-connect {
            position: absolute;
            top: 50%;
            right: -22px;
            transform: translateY(-50%);
            color: #cbd0dc;
            font-size: 1.2rem;
            z-index: 2;
        }

        /* ===== Guide List ===== */
        .guide-panel {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 12px;
        }
        .guide-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 18px;
            border-radius: var(--radius-sm);
            border-bottom: 1px solid var(--border);
            transition: all .3s ease;
        }
        .guide-item:last-child {
            border-bottom: none;
        }
        .guide-item:hover {
            background: var(--brand-light);
            transform: translateX(5px);
        }
        .guide-index {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--brand-light);
            color: var(--brand);
            font-weight: 800;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all .3s;
        }
        .guide-item:hover .guide-index {
            background: var(--brand);
            color: #fff;
        }
        .guide-info {
            flex: 1;
            min-width: 0;
        }
        .guide-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 5px;
            line-height: 1.5;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .guide-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: .85rem;
            color: var(--text-weak);
            flex-wrap: wrap;
        }
        .badge-guide {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: #f1f2f6;
            color: var(--accent);
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: .8rem;
        }
        .btn-guide-more {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: #f1f2f6;
            color: var(--text);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: .9rem;
            flex-shrink: 0;
            transition: all .3s;
        }
        .btn-guide-more:hover {
            background: var(--brand);
            color: #fff;
        }
        .guide-all-btn {
            margin-top: 22px;
            text-align: center;
        }

        /* ===== Stats ===== */
        .stat-block {
            position: relative;
            background: linear-gradient(135deg, #14213d, #1e3a5f);
            color: #fff;
            padding: 90px 0;
            overflow: hidden;
        }
        .stat-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: .22;
        }
        .stat-block .container {
            position: relative;
            z-index: 2;
        }
        .stat-item {
            text-align: center;
            padding: 24px 16px;
        }
        .stat-icon {
            font-size: 1.9rem;
            color: #ff9a5c;
            margin-bottom: 16px;
            display: block;
        }
        .stat-num {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -.01em;
            display: block;
            margin-bottom: 8px;
        }
        .stat-label {
            font-size: .95rem;
            color: rgba(255, 255, 255, .72);
        }

        /* ===== FAQ Accordion ===== */
        .accordion {
            --bs-accordion-border-color: var(--border);
            --bs-accordion-border-radius: var(--radius-sm);
            --bs-accordion-bg: var(--card-bg);
            --bs-accordion-active-bg: var(--brand-light);
            --bs-accordion-active-color: var(--brand);
            --bs-accordion-btn-focus-border-color: rgba(232, 84, 30, .3);
            --bs-accordion-btn-focus-box-shadow: 0 0 0 4px rgba(232, 84, 30, .12);
            --bs-accordion-btn-padding-y: 20px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm) !important;
            box-shadow: 0 2px 10px rgba(20, 24, 50, .03);
            overflow: hidden;
            background: var(--card-bg);
        }
        .accordion-button {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text);
            background: var(--card-bg);
            padding: 20px 24px;
        }
        .accordion-button:not(.collapsed) {
            color: var(--brand);
            background: var(--brand-light);
            box-shadow: none;
        }
        .accordion-button::after {
            background-size: 1rem;
            opacity: .7;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 4px rgba(232, 84, 30, .12);
            border-color: rgba(232, 84, 30, .3);
        }
        .accordion-body {
            color: var(--text-weak);
            font-size: .96rem;
            line-height: 1.8;
            padding: 6px 24px 22px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--spacer) 0;
        }
        .cta-card {
            position: relative;
            background: linear-gradient(135deg, var(--brand), #ff7e33 65%, #ff9a5c);
            border-radius: 28px;
            padding: 70px 48px;
            text-align: center;
            color: #fff;
            overflow: hidden;
            box-shadow: 0 26px 70px rgba(232, 84, 30, .32);
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -70px;
            left: -70px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .1);
        }
        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -110px;
            right: -80px;
            width: 320px;
            height: 320px;
            border: 2px solid rgba(255, 255, 255, .16);
            border-radius: 50%;
        }
        .cta-card .container {
            position: relative;
            z-index: 2;
        }
        .cta-title {
            font-size: clamp(1.8rem, 3.4vw, 2.6rem);
            font-weight: 800;
            letter-spacing: -.02em;
            margin-bottom: 16px;
        }
        .cta-text {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, .9);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-white {
            background: #fff;
            color: var(--brand);
            border: none;
            border-radius: 999px;
            padding: 13px 34px;
            font-weight: 700;
            font-size: 1rem;
            transition: all .3s;
            box-shadow: 0 10px 26px rgba(0, 0, 0, .12);
        }
        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(0, 0, 0, .18);
            color: var(--brand-dark);
        }
        .btn-outline-white {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, .7);
            color: #fff;
            border-radius: 999px;
            padding: 12px 34px;
            font-weight: 700;
            font-size: 1rem;
            transition: all .3s;
        }
        .btn-outline-white:hover {
            background: rgba(255, 255, 255, .15);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 72px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 44px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            color: #fff;
            font-size: 1.35rem;
            margin-bottom: 16px;
        }
        .footer-about p {
            line-height: 1.8;
            color: #94a3b8;
            font-size: .94rem;
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: rgba(255, 255, 255, .08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #cbd5e1;
            font-size: .95rem;
            transition: all .3s;
        }
        .footer-social a:hover {
            background: var(--brand);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 22px;
            height: 3px;
            background: var(--brand);
            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: #94a3b8;
            font-size: .94rem;
            transition: all .25s;
        }
        .footer-col ul a:hover {
            color: #fff;
            padding-left: 6px;
        }
        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #94a3b8;
            font-size: .93rem;
            margin-bottom: 12px;
        }
        .footer-contact i {
            color: #ff9a5c;
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            color: #64748b;
            font-size: .88rem;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --spacer: 76px;
            }
            .footer-grid {
                grid-template-columns: 1.2fr 1fr 1fr;
                gap: 32px;
            }
            .footer-about {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacer: 60px;
            }
            .page-hero {
                padding: 80px 0 70px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .hero-search {
                flex-direction: row;
                border-radius: 999px;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-desc {
                font-size: .98rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-about {
                grid-column: 1 / -1;
            }
            .cta-card {
                padding: 54px 28px;
            }
            .step-connect {
                display: none;
            }
            .guide-item {
                flex-wrap: wrap;
                gap: 12px;
            }
            .guide-info {
                flex: 1 1 100%;
                order: 2;
            }
            .guide-index {
                order: 1;
            }
            .btn-guide-more {
                order: 3;
                margin-left: auto;
            }
            .guide-title {
                white-space: normal;
            }
        }
        @media (max-width: 520px) {
            .page-hero {
                padding: 64px 0 56px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-search {
                flex-direction: column;
                border-radius: 24px;
                padding: 8px;
            }
            .hero-search input {
                text-align: center;
                padding: 12px 16px;
            }
            .hero-search .btn {
                width: 100%;
            }
            .feature-card,
            .step-card {
                padding: 26px 20px;
            }
            .stat-num {
                font-size: 2.2rem;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .section-block {
                padding: 48px 0;
            }
            .play-card .card-img {
                height: 170px;
            }
        }