/* roulang page: index */
:root {
    --primary: #e03c24;
    --primary-dark: #c12e18;
    --primary-light: #ffebe6;
    --secondary: #1b2a41;
    --secondary-light: #2a3f5c;
    --accent: #f5a623;
    --bg: #f5f7fa;
    --bg-white: #ffffff;
    --bg-dark: #111c2a;
    --text: #1a2430;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f0f2f5;
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow: 0 6px 24px rgba(0,0,0,0.07);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 32px;
    --space-lg: 56px;
    --space-xl: 88px;
    --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--font-family);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-xl) 0; }
.section-header { text-align: center; max-width: 680px; margin: 0 auto var(--space-lg); }
.section-header .eyebrow {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
    padding: 4px 16px;
    border-radius: 100px;
    letter-spacing: 0.5px;
    margin-bottom: 14px;
    text-transform: uppercase;
}
.section-header h2 {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.3;
    color: var(--text);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}
.section-header p {
    color: var(--text-light);
    font-size: 16px;
    line-height: 1.7;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 14px;
    line-height: 1;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    gap: 8px;
}
.btn-primary {
    background: var(--primary);
    color: #fff !important;
    border-color: var(--primary);
    box-shadow: 0 4px 16px rgba(224, 60, 36, 0.25);
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(224, 60, 36, 0.32);
}
.btn-outline {
    background: transparent;
    color: #fff !important;
    border-color: rgba(255,255,255,0.6);
}
.btn-outline:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.12);
    transform: translateY(-2px);
}
.btn-light {
    background: #fff;
    color: var(--primary) !important;
    border-color: #fff;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.btn-light:hover { background: #f8fafc; transform: translateY(-2px); }
.btn-lg { padding: 16px 38px; font-size: 16px; }

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding-top: 16px;
    padding-bottom: 16px;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: var(--text);
    white-space: nowrap;
}
.brand-logo:hover { color: var(--text); }
.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), #ff6b4a);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    box-shadow: 0 4px 14px rgba(224, 60, 36, 0.3);
}
.logo-text { letter-spacing: -0.5px; }
.logo-sub {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-light);
    background: var(--bg);
    padding: 2px 10px;
    border-radius: 100px;
    border: 1px solid var(--border);
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 20px;
}
.main-nav .nav-link {
    padding: 8px 18px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    transition: var(--transition);
}
.main-nav .nav-link:hover {
    color: var(--text);
    background: var(--bg);
}
.main-nav .nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
}
.header-search {
    display: flex;
    align-items: center;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 0 14px;
    gap: 8px;
    height: 40px;
    width: 220px;
    transition: var(--transition);
}
.header-search:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(224, 60, 36, 0.1);
    background: #fff;
}
.header-search i { color: var(--text-muted); font-size: 14px; }
.header-search input {
    border: none;
    outline: none;
    background: transparent;
    font-size: 13px;
    width: 100%;
    color: var(--text);
}
.header-search input::placeholder { color: var(--text-muted); }
.header-cta { white-space: nowrap; }
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 10px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text);
    transition: var(--transition);
}
.menu-toggle:hover { background: var(--bg); }

/* ===== Mobile Nav ===== */
.mobile-nav {
    display: none;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    flex-direction: column;
    gap: 10px;
}
.mobile-nav.open { display: flex; }
.mobile-nav .nav-link {
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}
.mobile-nav .nav-link:hover { background: var(--bg); }
.mobile-nav .nav-link.active { color: var(--primary); background: var(--primary-light); }

/* ===== Hero ===== */
.hero {
    position: relative;
    padding: 120px 0 140px;
    background-size: cover;
    background-position: center;
    overflow: hidden;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(17, 28, 42, 0.88) 0%, rgba(27, 42, 65, 0.72) 50%, rgba(224, 60, 36, 0.45) 100%);
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 760px;
    margin: 0 auto;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 20px;
    border-radius: 100px;
    backdrop-filter: blur(8px);
    margin-bottom: 24px;
}
.hero-badge i { font-size: 12px; color: var(--accent); }
.hero-content h1 {
    font-size: 52px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 16px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.hero-content .hero-desc {
    font-size: 18px;
    color: rgba(255,255,255,0.85);
    line-height: 1.7;
    margin-bottom: 36px;
}
.hero-search {
    display: flex;
    align-items: center;
    background: #fff;
    border-radius: 100px;
    padding: 6px 6px 6px 20px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.2);
    max-width: 520px;
    margin: 0 auto 28px;
    gap: 8px;
}
.hero-search i { color: var(--text-muted); font-size: 16px; }
.hero-search input {
    border: none;
    outline: none;
    font-size: 15px;
    flex: 1;
    color: var(--text);
    background: transparent;
}
.hero-search input::placeholder { color: var(--text-muted); }
.hero-search .btn { white-space: nowrap; }
.hero-actions {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}
.hero-stats {
    position: absolute;
    bottom: 30px;
    left: 0;
    right: 0;
    z-index: 2;
    display: flex;
    justify-content: center;
    gap: 40px;
}
.hero-stat { text-align: center; color: #fff; }
.hero-stat .num { font-size: 26px; font-weight: 800; }
.hero-stat .label { font-size: 13px; opacity: 0.75; }

/* ===== Stats Section ===== */
.stats-section {
    padding: 0;
    margin-top: -60px;
    position: relative;
    z-index: 10;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.stat-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.stat-card .stat-icon {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 12px;
}
.stat-card .stat-num {
    font-size: 36px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -1px;
    line-height: 1.2;
}
.stat-card .stat-label {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 4px;
}

/* ===== Features Section ===== */
.features-section { background: var(--bg-white); border-top: 1px solid var(--border-light); }
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.feature-card {
    background: var(--bg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), #ff6b4a);
    opacity: 0;
    transition: var(--transition);
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); background: #fff; }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
    transition: var(--transition);
}
.feature-card:hover .feature-icon {
    background: var(--primary);
    color: #fff;
    transform: scale(1.05);
}
.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
}
.feature-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== Categories Section ===== */
.categories-section { background: var(--bg); }
.categories-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
}
.category-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}
.category-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(17,28,42,0.2) 0%, rgba(17,28,42,0.75) 100%);
    transition: var(--transition);
}
.category-card:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}
.category-card:hover::before {
    background: linear-gradient(180deg, rgba(224,60,36,0.15) 0%, rgba(17,28,42,0.8) 100%);
}
.category-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    padding: 24px;
}
.category-content .cat-tag {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.3);
    font-size: 12px;
    padding: 4px 14px;
    border-radius: 100px;
    margin-bottom: 12px;
    backdrop-filter: blur(4px);
}
.category-content h3 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 6px;
}
.category-content p {
    font-size: 14px;
    opacity: 0.85;
    margin-bottom: 16px;
}
.category-content .btn-sm {
    padding: 8px 22px;
    font-size: 13px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.4);
    color: #fff;
    border-radius: 100px;
    backdrop-filter: blur(4px);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.category-content .btn-sm:hover {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
}

/* ===== News Section ===== */
.news-section { background: var(--bg-white); border-top: 1px solid var(--border-light); }
.news-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 40px;
}
.news-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.news-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-light);
    border-radius: 12px;
    transition: var(--transition);
}
.news-item:hover {
    background: var(--bg);
    padding-left: 28px;
}
.news-item .news-cat {
    flex-shrink: 0;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    padding: 3px 12px;
    border-radius: 100px;
    margin-top: 4px;
}
.news-item .news-body { flex: 1; }
.news-item .news-body h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.5;
    margin-bottom: 4px;
    transition: var(--transition);
}
.news-item:hover .news-body h3 { color: var(--primary); }
.news-item .news-body p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 6px;
}
.news-item .news-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    color: var(--text-muted);
}
.news-item .news-meta i { font-size: 11px; }
.news-empty {
    padding: 60px 20px;
    text-align: center;
    color: var(--text-light);
    background: var(--bg);
    border-radius: var(--radius);
}
.news-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.sidebar-card {
    background: var(--bg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 28px;
}
.sidebar-card h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}
.sidebar-card h4 i { color: var(--primary); }
.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tag {
    background: #fff;
    border: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-light);
    padding: 5px 14px;
    border-radius: 100px;
    cursor: pointer;
    transition: var(--transition);
}
.tag:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}
.subscribe-card {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    border: none;
    color: #fff;
}
.subscribe-card h4 { color: #fff; }
.subscribe-card h4 i { color: var(--accent); }
.subscribe-card p {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 18px;
}
.subscribe-form {
    display: flex;
    gap: 8px;
}
.subscribe-form input {
    flex: 1;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    border-radius: 100px;
    padding: 10px 16px;
    font-size: 13px;
    color: #fff;
    outline: none;
}
.subscribe-form input::placeholder { color: rgba(255,255,255,0.5); }
.subscribe-form input:focus { border-color: var(--accent); }
.subscribe-form .btn {
    background: var(--accent);
    border-color: var(--accent);
    color: #1a2430 !important;
    font-weight: 700;
    padding: 10px 20px;
    font-size: 13px;
    border-radius: 100px;
}
.subscribe-form .btn:hover { background: #ffb84d; transform: translateY(-1px); }

/* ===== Why Section ===== */
.why-section { background: var(--bg); }
.why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.why-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.why-image img { width: 100%; height: 380px; object-fit: cover; }
.why-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-lg);
}
.why-content .section-header { text-align: left; margin-bottom: 28px; }
.why-content .section-header h2 { font-size: 30px; }
.why-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.why-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.why-item:hover { box-shadow: var(--shadow); transform: translateX(4px); }
.why-item .why-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}
.why-item .why-text h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}
.why-item .why-text p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== FAQ Section ===== */
.faq-section { background: var(--bg-white); border-top: 1px solid var(--border-light); }
.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.faq-item {
    background: var(--bg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary); }
.faq-item.active { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.faq-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    text-align: left;
    transition: var(--transition);
}
.faq-toggle:hover { color: var(--primary); }
.faq-toggle i {
    font-size: 14px;
    color: var(--text-muted);
    transition: transform 0.3s;
    flex-shrink: 0;
}
.faq-item.active .faq-toggle i { transform: rotate(180deg); color: var(--primary); }
.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}
.faq-content p, .faq-content ul {
    padding: 0 24px 20px;
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}
.faq-content ul { padding-left: 48px; }
.faq-content ul li { list-style: disc; margin-bottom: 4px; }

/* ===== CTA Section ===== */
.cta-section {
    position: relative;
    padding: 100px 0;
    background-size: cover;
    background-position: center;
    overflow: hidden;
}
.cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(224,60,36,0.85), rgba(17,28,42,0.9));
}
.cta-section .container {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
}
.cta-section h2 {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}
.cta-section p {
    font-size: 16px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 32px;
}
.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.7);
    padding: 64px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .brand-logo { margin-bottom: 16px; }
.footer-brand .brand-logo .logo-text { color: #fff; }
.footer-brand .brand-logo .logo-sub { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.6); border-color: rgba(255,255,255,0.15); }
.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 260px;
}
.footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    transition: var(--transition);
}
.footer-col ul li a:hover { color: #fff; padding-left: 4px; }
.footer-contact p {
    font-size: 14px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-contact i { color: var(--accent); font-size: 14px; }
.footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: #fff; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: 1fr 300px; }
    .container { padding: 0 20px; }
    .section { padding: 60px 0; }
}
@media (max-width: 768px) {
    .main-nav, .header-search, .header-cta { display: none; }
    .menu-toggle { display: flex; }
    .hero { padding: 80px 0 100px; }
    .hero-content h1 { font-size: 36px; }
    .hero-content .hero-desc { font-size: 16px; }
    .hero-search { flex-direction: column; padding: 10px; border-radius: 20px; }
    .hero-search .btn { width: 100%; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .stats-section { margin-top: -40px; }
    .stat-card { padding: 24px 16px; }
    .stat-card .stat-num { font-size: 30px; }
    .features-grid { grid-template-columns: 1fr; }
    .categories-grid { grid-template-columns: 1fr; gap: 20px; }
    .news-grid { grid-template-columns: 1fr; }
    .news-sidebar { order: -1; }
    .why-grid { grid-template-columns: 1fr; gap: 32px; }
    .why-image img { height: 260px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .cta-section { padding: 70px 0; }
    .cta-section h2 { font-size: 28px; }
    .section-header h2 { font-size: 26px; }
    .hero-stats { display: none; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .brand-logo .logo-sub { display: none; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .stat-card { padding: 18px 12px; }
    .stat-card .stat-num { font-size: 24px; }
    .hero-search input { font-size: 14px; }
    .features-grid { gap: 16px; }
    .feature-card { padding: 24px 18px; }
    .category-card { min-height: 220px; }
    .btn-lg { padding: 14px 28px; font-size: 15px; }
    .news-item { flex-direction: column; gap: 8px; }
    .news-item .news-cat { margin-top: 0; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a5cff;
            --primary-dark: #0e3fa8;
            --primary-light: #e8eeff;
            --secondary: #06b6a0;
            --accent: #f59e0b;
            --dark: #0f172a;
            --dark-soft: #1e293b;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f8fafc;
            --bg: #f5f7fb;
            --bg-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
            --shadow-primary: 0 8px 30px rgba(26, 92, 255, 0.2);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-width: 1200px;
            --space-section: 80px;
        }

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

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

        body {
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        ul, ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

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

        /* ===== 顶部导航 ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: 72px;
            display: flex;
            align-items: center;
            transition: var(--transition);
        }

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: var(--shadow-primary);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.5px;
        }

        .logo-sub {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 10px;
            border-radius: 20px;
            margin-left: 4px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0 24px;
        }

        .nav-link {
            padding: 10px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }

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

        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: var(--shadow-primary);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 8px 16px;
            width: 220px;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 92, 255, 0.12);
            background: #fff;
        }

        .search-box i {
            color: var(--text-light);
            font-size: 14px;
            margin-right: 8px;
        }

        .search-box input {
            border: none;
            background: transparent;
            width: 100%;
            font-size: 14px;
            color: var(--text);
        }

        .search-box input::placeholder {
            color: #94a3b8;
        }

        .btn-header-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: var(--shadow-primary);
            border: none;
            cursor: pointer;
        }

        .btn-header-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(26, 92, 255, 0.3);
            color: #fff;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--dark);
            cursor: pointer;
            padding: 8px;
        }

        /* ===== 移动端导航 ===== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: #fff;
            padding: 20px;
            box-shadow: var(--shadow-lg);
            z-index: 999;
            border-bottom: 1px solid var(--border);
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav .nav-link {
            display: block;
            padding: 14px 20px;
            margin-bottom: 6px;
            border-radius: 12px;
        }

        .mobile-nav .nav-link.active {
            color: #fff;
        }

        .mobile-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 10px 16px;
            margin-bottom: 16px;
        }

        .mobile-search i {
            color: var(--text-light);
            margin-right: 10px;
        }

        .mobile-search input {
            border: none;
            background: transparent;
            width: 100%;
        }

        /* ===== Hero / 页面横幅 ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(120deg, var(--dark) 0%, var(--dark-soft) 60%, rgba(26, 92, 255, 0.3) 100%);
            overflow: hidden;
            isolation: isolate;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.5;
            z-index: -1;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.4));
            z-index: -1;
        }

        .banner-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
            color: var(--text-white);
        }

        .banner-text {
            flex: 1.2;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }

        .banner-text h1 {
            font-size: 48px;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .banner-text h1 span {
            background: linear-gradient(135deg, #60a5fa, #34d399);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .banner-text p {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(248, 250, 252, 0.85);
            margin-bottom: 32px;
            max-width: 560px;
        }

        .banner-stats {
            display: flex;
            gap: 48px;
        }

        .banner-stat {
            text-align: center;
        }

        .banner-stat .num {
            font-size: 36px;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
        }

        .banner-stat .num small {
            font-size: 18px;
            font-weight: 700;
            color: #60a5fa;
        }

        .banner-stat .label {
            font-size: 14px;
            color: rgba(248, 250, 252, 0.7);
            margin-top: 4px;
        }

        .banner-visual {
            flex: 0.8;
            display: flex;
            justify-content: flex-end;
        }

        .banner-card-stack {
            display: flex;
            gap: 16px;
        }

        .banner-mini-card {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            padding: 20px;
            border-radius: var(--radius);
            width: 160px;
            text-align: center;
        }

        .banner-mini-card i {
            font-size: 32px;
            color: #60a5fa;
            margin-bottom: 12px;
        }

        .banner-mini-card h5 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }

        .banner-mini-card p {
            font-size: 13px;
            color: rgba(248, 250, 252, 0.6);
        }

        .banner-mini-card:nth-child(2) {
            transform: translateY(30px);
        }

        .banner-mini-card:nth-child(2) i {
            color: #34d399;
        }

        /* ===== 板块标题 ===== */
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 40px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 900;
            color: var(--dark);
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== 分类筛选 ===== */
        .filter-section {
            padding: 40px 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
        }

        .filter-inner {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .filter-label {
            font-weight: 700;
            color: var(--text);
            font-size: 15px;
            margin-right: 8px;
        }

        .filter-chip {
            padding: 8px 20px;
            border-radius: 30px;
            background: var(--bg);
            border: 1px solid var(--border);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
        }

        .filter-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .filter-chip.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-color: transparent;
            box-shadow: var(--shadow-primary);
        }

        .filter-search {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--bg);
            border-radius: 40px;
            padding: 8px 16px;
            border: 1px solid var(--border);
        }

        .filter-search input {
            border: none;
            background: transparent;
            font-size: 14px;
            width: 200px;
        }

        .filter-search i {
            color: var(--text-light);
        }

        /* ===== 资讯卡片网格 ===== */
        .news-grid-section {
            background: var(--bg);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
        }

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

        .news-card-image {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .news-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

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

        .news-card-category {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(4px);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            z-index: 2;
        }

        .news-card-trend {
            position: absolute;
            top: 14px;
            right: 14px;
            background: rgba(245, 158, 11, 0.95);
            color: #fff;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 700;
            z-index: 2;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

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

        .news-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 12px;
            color: var(--dark);
            transition: var(--transition);
        }

        .news-card:hover .news-card-body h3 {
            color: var(--primary);
        }

        .news-card-body h3 a {
            color: inherit;
        }

        .news-card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 20px;
            flex: 1;
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }

        .news-card-meta i {
            color: var(--primary);
            opacity: 0.6;
        }

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

        /* ===== 热门排行 ===== */
        .hot-section {
            background: var(--dark);
            position: relative;
            overflow: hidden;
        }

        .hot-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            opacity: 0.08;
        }

        .hot-section .section-head h2,
        .hot-section .section-head p {
            color: #fff;
        }

        .hot-section .section-tag {
            background: rgba(255, 255, 255, 0.15);
            color: #60a5fa;
        }

        .hot-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 48px;
            align-items: start;
            position: relative;
        }

        .hot-lead {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 32px;
            border-radius: var(--radius-lg);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 100px;
        }

        .hot-lead .label-badge {
            display: inline-block;
            background: linear-gradient(135deg, #60a5fa, #34d399);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 16px;
        }

        .hot-lead h3 {
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .hot-lead p {
            color: rgba(248, 250, 252, 0.7);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .hot-lead-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #60a5fa;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
        }

        .hot-lead-cta:hover {
            gap: 14px;
            color: #93c5fd;
        }

        .hot-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .hot-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius);
            padding: 20px;
            display: flex;
            gap: 16px;
            align-items: center;
            transition: var(--transition);
            cursor: pointer;
        }

        .hot-item:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateX(6px);
        }

        .hot-rank {
            font-size: 28px;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.15);
            min-width: 44px;
            text-align: center;
            font-style: italic;
        }

        .hot-item:nth-child(1) .hot-rank {
            color: #f59e0b;
        }

        .hot-item:nth-child(2) .hot-rank {
            color: #94a3b8;
        }

        .hot-item:nth-child(3) .hot-rank {
            color: #cd7f32;
        }

        .hot-item-content h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .hot-item-content p {
            color: rgba(248, 250, 252, 0.55);
            font-size: 13px;
        }

        .hot-item-arrow {
            margin-left: auto;
            color: rgba(255, 255, 255, 0.3);
            transition: var(--transition);
        }

        .hot-item:hover .hot-item-arrow {
            color: #60a5fa;
            transform: translateX(4px);
        }

        /* ===== 数据统计 ===== */
        .stat-section {
            background: var(--bg-white);
        }

        .stat-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 24px;
        }

        .stat-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 32px 18px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            background: #fff;
        }

        .stat-card .stat-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin: 0 auto 16px;
        }

        .stat-card .stat-num {
            font-size: 32px;
            font-weight: 900;
            color: var(--dark);
            line-height: 1.2;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ===== 媒体资源 ===== */
        .media-section {
            background: var(--bg);
        }

        .media-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .media-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .media-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .media-card-image {
            position: relative;
            aspect-ratio: 16/8;
            overflow: hidden;
        }

        .media-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .media-card:hover .media-card-image img {
            transform: scale(1.04);
        }

        .media-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.8), transparent);
            display: flex;
            align-items: flex-end;
            padding: 20px;
        }

        .media-overlay-content {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
        }

        .media-card-body {
            padding: 20px 24px;
            display: flex;
            gap: 12px;
            align-items: center;
        }

        .media-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .media-card-body p {
            font-size: 14px;
            color: var(--text-light);
        }

        .media-timestamp {
            margin-left: auto;
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 0.7fr 1.3fr;
            gap: 48px;
            align-items: start;
        }

        .faq-intro h2 {
            font-size: 34px;
            font-weight: 900;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .faq-intro p {
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .faq-intro .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 12px 24px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 15px;
            transition: var(--transition);
            cursor: pointer;
        }

        .faq-intro .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .faq-list .faq-item {
            background: var(--bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 24px;
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .faq-item.active {
            background: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
        }

        .faq-question .icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question .icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            padding-top: 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 16px;
        }

        .faq-answer p {
            color: var(--text-light);
            line-height: 1.7;
            font-size: 14px;
        }

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

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            opacity: 0.12;
        }

        .cta-inner {
            text-align: center;
            position: relative;
            color: #fff;
        }

        .cta-inner span {
            font-size: 16px;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.15);
            padding: 6px 18px;
            border-radius: 30px;
            display: inline-block;
            margin-bottom: 16px;
        }

        .cta-inner h2 {
            font-size: 38px;
            font-weight: 900;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .cta-inner p {
            font-size: 18px;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto 32px;
        }

        .btn-white {
            background: #fff;
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
            color: var(--dark);
        }

        .btn-glass {
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            margin-left: 12px;
        }

        .btn-glass:hover {
            background: rgba(255, 255, 255, 0.25);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(248, 250, 252, 0.7);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 16px;
        }

        .footer-brand .logo-text {
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }

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

        .footer-col ul li a {
            font-size: 14px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul li a:hover {
            color: #60a5fa;
            padding-left: 4px;
        }

        .footer-col ul li a i {
            font-size: 12px;
            opacity: 0.5;
        }

        .footer-contact p {
            font-size: 14px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact p i {
            color: #60a5fa;
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 14px;
            color: rgba(248, 250, 252, 0.5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --space-section: 64px;
            }

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

            .stat-grid {
                grid-template-columns: repeat(3, 1fr);
            }

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

            .hot-lead {
                position: static;
            }

            .banner-content {
                flex-direction: column;
                text-align: center;
            }

            .banner-text p {
                margin: 0 auto 32px;
            }

            .banner-stats {
                justify-content: center;
            }

            .banner-visual {
                justify-content: center;
                margin-top: 32px;
            }

            .banner-text h1 {
                font-size: 38px;
            }

            .faq-layout {
                grid-template-columns: 1fr;
            }

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

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }

            .search-box {
                display: none;
            }

            .btn-header-cta {
                display: none;
            }

            .menu-toggle {
                display: block;
            }

            .header-actions {
                gap: 8px;
            }

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

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

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

            .banner-text h1 {
                font-size: 32px;
            }

            .banner-stats {
                flex-wrap: wrap;
                justify-content: center;
                gap: 24px;
            }

            .banner-card-stack {
                flex-direction: column;
                align-items: center;
            }

            .banner-mini-card:nth-child(2) {
                transform: none;
            }

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

            .filter-inner {
                justify-content: center;
            }

            .filter-search {
                width: 100%;
                margin-left: 0;
            }

            .filter-search input {
                flex: 1;
            }

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

            .cta-inner h2 {
                font-size: 30px;
            }

            .btn-glass {
                margin-left: 0;
                margin-top: 12px;
            }

            .page-banner {
                padding: 64px 0 48px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --space-section: 48px;
            }

            .container {
                padding: 0 16px;
            }

            .logo-text {
                font-size: 17px;
            }

            .logo-sub {
                font-size: 11px;
                padding: 2px 8px;
            }

            .banner-text h1 {
                font-size: 26px;
                line-height: 1.3;
            }

            .banner-text p {
                font-size: 15px;
            }

            .banner-stat .num {
                font-size: 28px;
            }

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

            .stat-card {
                padding: 20px 12px;
            }

            .stat-card .stat-num {
                font-size: 22px;
            }

            .hot-item-content h4 {
                font-size: 14px;
            }

            .news-card-body {
                padding: 18px;
            }

            .news-card-body h3 {
                font-size: 17px;
            }

            .hot-lead {
                padding: 20px;
            }

            .faq-item {
                padding: 16px;
            }

            .faq-question {
                font-size: 14px;
                gap: 12px;
            }
        }

/* roulang page: article */
:root {
        --primary: #1a56db;
        --primary-dark: #1e40af;
        --primary-light: #dbeafe;
        --accent: #f59e0b;
        --accent-dark: #d97706;
        --bg-body: #f4f7fb;
        --bg-white: #ffffff;
        --bg-light: #eef2f7;
        --bg-dark: #0f172a;
        --text-dark: #1e293b;
        --text-body: #475569;
        --text-light: #94a3b8;
        --border: #e2e8f0;
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 22px;
        --shadow-sm: 0 2px 8px rgba(15,23,42,.06);
        --shadow-md: 0 8px 24px rgba(15,23,42,.08);
        --shadow-lg: 0 16px 40px rgba(15,23,42,.12);
        --transition: all .25s ease;
        --font-body: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

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

    html { scroll-behavior: smooth; }

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

    img { max-width: 100%; height: auto; display: block; }
    a { text-decoration: none; color: inherit; transition: var(--transition); }
    ul, ol { list-style: none; }
    button { border: none; cursor: pointer; background: none; font-family: inherit; }

    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 28px;
        border-radius: 999px;
        font-size: 15px;
        font-weight: 600;
        transition: var(--transition);
        border: 2px solid transparent;
        line-height: 1.4;
    }
    .btn i { font-size: 14px; }
    .btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(26,86,219,.3); }
    .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(26,86,219,.4); }
    .btn-outline { border-color: rgba(255,255,255,.7); color: #fff; background: transparent; }
    .btn-outline:hover { background: rgba(255,255,255,.14); border-color: #fff; transform: translateY(-2px); }
    .btn-accent { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(245,158,11,.3); }
    .btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(245,158,11,.4); }
    .btn:focus { outline: 3px solid rgba(26,86,219,.35); outline-offset: 2px; }

    .badge {
        display: inline-block;
        padding: 4px 14px;
        border-radius: 999px;
        font-size: 12px;
        font-weight: 600;
        letter-spacing: .5px;
    }
    .badge-primary { background: var(--primary-light); color: var(--primary); }
    .badge-accent { background: rgba(245,158,11,.15); color: var(--accent-dark); }

    /* ===== Header / Nav ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(255,255,255,0.92);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid rgba(226,232,240,.7);
        box-shadow: 0 2px 12px rgba(15,23,42,.04);
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 74px;
        gap: 16px;
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .logo-icon {
        width: 44px;
        height: 44px;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--primary), #3b82f6);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 20px;
        box-shadow: 0 4px 14px rgba(26,86,219,.35);
    }
    .logo-text {
        font-size: 24px;
        font-weight: 800;
        color: var(--text-dark);
        letter-spacing: -0.5px;
        line-height: 1.1;
    }
    .logo-sub {
        font-size: 12px;
        color: var(--text-light);
        font-weight: 500;
        display: block;
        letter-spacing: 2px;
        margin-top: 1px;
    }
    .main-nav {
        display: flex;
        align-items: center;
        gap: 6px;
        flex: 1;
        justify-content: center;
    }
    .nav-link {
        padding: 10px 20px;
        border-radius: 999px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-body);
        transition: var(--transition);
        position: relative;
    }
    .nav-link:hover { color: var(--primary); background: var(--bg-light); }
    .nav-link.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
    .nav-link:focus { outline: 3px solid rgba(26,86,219,.3); outline-offset: 2px; }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }
    .search-box {
        position: relative;
        width: 200px;
    }
    .search-box input {
        width: 100%;
        padding: 10px 14px 10px 38px;
        border: 1px solid var(--border);
        border-radius: 999px;
        font-size: 14px;
        background: var(--bg-light);
        transition: var(--transition);
        outline: none;
        color: var(--text-dark);
    }
    .search-box input::placeholder { color: var(--text-light); }
    .search-box input:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(26,86,219,.12); }
    .search-box i {
        position: absolute;
        left: 15px;
        top: 50%;
        transform: translateY(-50%);
        color: var(--text-light);
        font-size: 14px;
        pointer-events: none;
    }
    .header-cta {
        padding: 10px 22px;
        border-radius: 999px;
        background: var(--primary);
        color: #fff;
        font-size: 14px;
        font-weight: 600;
        box-shadow: 0 4px 12px rgba(26,86,219,.28);
        transition: var(--transition);
        white-space: nowrap;
    }
    .header-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 18px rgba(26,86,219,.35); }
    .menu-toggle { display: none; font-size: 24px; color: var(--text-dark); padding: 8px; border-radius: 10px; }

    /* ===== Page Banner ===== */
    .page-banner {
        position: relative;
        background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        padding: 48px 0 56px;
        color: #fff;
    }
    .page-banner::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(120deg, rgba(15,23,42,.82), rgba(26,86,219,.58));
    }
    .page-banner .container { position: relative; z-index: 2; }
    .breadcrumb {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        font-size: 13px;
        color: rgba(255,255,255,.75);
        gap: 6px;
        margin-bottom: 18px;
    }
    .breadcrumb a { color: rgba(255,255,255,.85); }
    .breadcrumb a:hover { color: #fff; }
    .breadcrumb i { font-size: 10px; color: rgba(255,255,255,.5); }
    .banner-title {
        font-size: 26px;
        font-weight: 800;
        line-height: 1.4;
        max-width: 780px;
        color: #fff;
        letter-spacing: 0.5px;
    }

    /* ===== Article Main ===== */
    .article-main { padding: 56px 0 64px; background: var(--bg-body); }
    .article-card {
        background: var(--bg-white);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-md);
        padding: 40px 44px;
        border: 1px solid rgba(226,232,240,.6);
        margin-bottom: 36px;
    }
    .article-category {
        display: inline-block;
        background: var(--primary-light);
        color: var(--primary);
        padding: 5px 16px;
        border-radius: 999px;
        font-size: 13px;
        font-weight: 600;
        margin-bottom: 18px;
    }
    .article-title {
        font-size: 32px;
        font-weight: 800;
        color: var(--text-dark);
        line-height: 1.35;
        margin-bottom: 18px;
        letter-spacing: -0.3px;
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 18px;
        padding-bottom: 28px;
        border-bottom: 1px solid var(--border);
        margin-bottom: 30px;
        font-size: 14px;
        color: var(--text-light);
    }
    .article-meta span { display: inline-flex; align-items: center; gap: 7px; }
    .article-meta i { color: var(--primary); opacity: .7; }

    .article-content { font-size: 16px; line-height: 1.9; color: #374151; word-wrap: break-word; }
    .article-content p { margin-bottom: 1.6em; }
    .article-content h2 { font-size: 24px; font-weight: 700; color: var(--text-dark); margin: 1.8em 0 .8em; padding-left: 14px; border-left: 4px solid var(--primary); line-height: 1.4; }
    .article-content h3 { font-size: 20px; font-weight: 700; color: var(--text-dark); margin: 1.6em 0 .6em; }
    .article-content ul, .article-content ol { margin: 0 0 1.6em 1.6em; }
    .article-content ul li { list-style: disc; margin-bottom: .5em; }
    .article-content ol li { list-style: decimal; margin-bottom: .5em; }
    .article-content a { color: var(--primary); border-bottom: 1px dashed var(--primary); }
    .article-content a:hover { color: var(--primary-dark); border-bottom-style: solid; }
    .article-content blockquote {
        border-left: 4px solid var(--accent);
        background: rgba(245,158,11,.06);
        padding: 18px 24px;
        margin: 1.8em 0;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-body);
        font-style: normal;
    }
    .article-content blockquote p:last-child { margin-bottom: 0; }
    .article-content img { border-radius: var(--radius-md); margin: 1.6em auto; box-shadow: var(--shadow-sm); max-width: 100%; }
    .article-content table { width: 100%; border-collapse: collapse; margin: 1.6em 0; font-size: 14px; }
    .article-content table th { background: var(--bg-light); color: var(--text-dark); font-weight: 600; }
    .article-content table th, .article-content table td { padding: 12px 16px; border: 1px solid var(--border); text-align: left; }

    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        padding-top: 28px;
        margin-top: 34px;
        border-top: 1px solid var(--border);
    }
    .article-tags span {
        display: inline-block;
        padding: 5px 14px;
        background: var(--bg-light);
        border-radius: 999px;
        font-size: 13px;
        color: var(--text-body);
        transition: var(--transition);
    }
    .article-tags span:hover { background: var(--primary-light); color: var(--primary); }

    .article-nav {
        display: flex;
        justify-content: space-between;
        gap: 16px;
        margin-top: 30px;
        padding-top: 24px;
        border-top: 1px solid var(--border);
    }
    .article-nav a {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 20px;
        border-radius: 12px;
        background: var(--bg-light);
        color: var(--text-dark);
        font-size: 14px;
        font-weight: 600;
        transition: var(--transition);
    }
    .article-nav a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

    /* ===== Sidebar ===== */
    .sidebar { position: sticky; top: 94px; }
    .widget {
        background: var(--bg-white);
        border-radius: var(--radius-lg);
        padding: 28px;
        box-shadow: var(--shadow-sm);
        border: 1px solid rgba(226,232,240,.55);
        margin-bottom: 28px;
    }
    .widget-title {
        font-size: 18px;
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 20px;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .widget-title i { color: var(--primary); font-size: 16px; }
    .widget-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }

    .widget-about .about-img {
        width: 100%;
        height: 120px;
        object-fit: cover;
        border-radius: var(--radius-md);
        margin-bottom: 16px;
    }
    .widget-about p { font-size: 14px; line-height: 1.7; color: var(--text-body); }

    .widget-latest ul li {
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
    }
    .widget-latest ul li:last-child { border-bottom: none; padding-bottom: 0; }
    .widget-latest a {
        font-size: 14px;
        font-weight: 500;
        color: var(--text-dark);
        display: block;
        line-height: 1.5;
        transition: var(--transition);
    }
    .widget-latest a:hover { color: var(--primary); }
    .widget-latest .post-date { font-size: 12px; color: var(--text-light); margin-top: 4px; }

    .widget-tags .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .widget-tags .tag-cloud a {
        padding: 6px 14px;
        background: var(--bg-light);
        border-radius: 999px;
        font-size: 13px;
        color: var(--text-body);
        transition: var(--transition);
    }
    .widget-tags .tag-cloud a:hover { background: var(--primary-light); color: var(--primary); transform: translateY(-2px); }

    /* ===== Not Found ===== */
    .not-found-box {
        text-align: center;
        padding: 60px 30px;
    }
    .not-found-box i { font-size: 56px; color: var(--text-light); margin-bottom: 20px; display: block; }
    .not-found-box h2 { font-size: 28px; color: var(--text-dark); margin-bottom: 12px; }
    .not-found-box p { color: var(--text-body); margin-bottom: 28px; max-width: 420px; margin-left: auto; margin-right: auto; }

    /* ===== Related ===== */
    .related-section { background: var(--bg-white); padding: 64px 0; border-top: 1px solid var(--border); }
    .section-head {
        text-align: center;
        margin-bottom: 42px;
    }
    .section-head .section-tag { color: var(--primary); font-size: 14px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px; }
    .section-head h2 { font-size: 32px; font-weight: 800; color: var(--text-dark); letter-spacing: -0.5px; }
    .section-head p { color: var(--text-light); margin-top: 10px; max-width: 560px; margin-left: auto; margin-right: auto; }

    .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 32px; }
    .related-card {
        background: var(--bg-white);
        border-radius: var(--radius-lg);
        overflow: hidden;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        display: flex;
        flex-direction: column;
    }
    .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
    .related-card .card-img { position: relative; overflow: hidden; aspect-ratio: 16 / 10; }
    .related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
    .related-card:hover .card-img img { transform: scale(1.06); }
    .related-card .card-img .badge {
        position: absolute;
        top: 14px;
        left: 14px;
        background: rgba(26,86,219,.9);
        color: #fff;
        padding: 5px 14px;
        border-radius: 999px;
        font-size: 12px;
        font-weight: 600;
        backdrop-filter: blur(4px);
    }
    .related-card .card-body { padding: 22px 24px; display: flex; flex-direction: column; flex: 1; }
    .related-card .card-body h3 { font-size: 17px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; line-height: 1.5; }
    .related-card .card-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; flex: 1; }
    .related-card .card-meta { margin-top: 16px; font-size: 13px; color: var(--text-light); display: flex; justify-content: space-between; align-items: center; }

    /* ===== CTA ===== */
    .cta-section {
        background: linear-gradient(135deg, #0f172a 0%, #1e40af 60%, #1a56db 100%);
        padding: 72px 0;
        text-align: center;
        color: #fff;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before { content: ''; position: absolute; top: -80px; right: -80px; width: 260px; height: 260px; border-radius: 50%; background: rgba(255,255,255,.06); }
    .cta-section::after { content: ''; position: absolute; bottom: -60px; left: -60px; width: 200px; height: 200px; border-radius: 50%; background: rgba(245,158,11,.12); }
    .cta-section .container { position: relative; z-index: 2; }
    .cta-section h2 { font-size: 34px; font-weight: 800; margin-bottom: 16px; letter-spacing: -0.5px; }
    .cta-section p { font-size: 16px; color: rgba(255,255,255,.8); max-width: 600px; margin: 0 auto 32px; }
    .cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark);
        color: rgba(255,255,255,.7);
        padding: 56px 0 24px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1.2fr;
        gap: 48px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255,255,255,.08);
    }
    .footer-brand .brand-logo { margin-bottom: 16px; }
    .footer-brand .logo-text { color: #fff; }
    .footer-brand .logo-sub { color: rgba(255,255,255,.5); }
    .footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.6); max-width: 360px; }
    .footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col ul li a { color: rgba(255,255,255,.65); font-size: 14px; }
    .footer-col ul li a:hover { color: var(--accent); }
    .footer-contact p { font-size: 14px; color: rgba(255,255,255,.6); margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
    .footer-contact i { color: var(--accent); width: 16px; text-align: center; }
    .footer-bottom {
        text-align: center;
        font-size: 13px;
        color: rgba(255,255,255,.4);
        padding-top: 24px;
    }

    /* ===== Responsive ===== */
    @media screen and (max-width: 1024px) {
        .search-box { width: 160px; }
        .article-card { padding: 32px; }
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
    }

    @media screen and (max-width: 768px) {
        .header-inner { flex-wrap: wrap; min-height: auto; padding: 12px 0; gap: 8px; }
        .brand-logo { flex: 1; }
        .menu-toggle { display: inline-flex; }
        .main-nav {
            display: none;
            width: 100%;
            flex-direction: column;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 12px;
            box-shadow: var(--shadow-md);
            gap: 4px;
        }
        .main-nav.open { display: flex; }
        .nav-link { text-align: center; width: 100%; padding: 12px; }
        .search-box { width: 100%; }
        .header-actions { width: 100%; gap: 10px; }
        .header-actions .search-box { flex: 1; }
        .header-cta { display: none; }
        .page-banner { padding: 36px 0 40px; }
        .banner-title { font-size: 22px; }
        .article-main { padding: 32px 0; }
        .article-card { padding: 24px 20px; border-radius: var(--radius-md); }
        .article-title { font-size: 24px; }
        .article-content { font-size: 15px; line-height: 1.85; }
        .article-nav { flex-direction: column; }
        .sidebar { position: static; margin-top: 32px; }
        .related-grid { grid-template-columns: 1fr; gap: 20px; }
        .cta-section h2 { font-size: 26px; }
        .footer-grid { grid-template-columns: 1fr; gap: 32px; }
        .footer-col { text-align: center; }
        .footer-brand p { margin: 0 auto; }
    }

    @media screen and (max-width: 520px) {
        .container { padding: 0 16px; }
        .page-banner { padding: 28px 0 32px; }
        .breadcrumb { font-size: 12px; }
        .banner-title { font-size: 19px; }
        .article-card { padding: 20px 16px; }
        .article-title { font-size: 21px; }
        .article-meta { gap: 12px; font-size: 13px; }
        .article-content { font-size: 15px; }
        .related-card .card-body { padding: 18px; }
        .cta-section h2 { font-size: 23px; }
        .cta-buttons .btn { width: 100%; }
        .widget { padding: 20px; }
    }

    @media screen and (max-width: 360px) {
        .logo-text { font-size: 20px; }
        .logo-sub { font-size: 10px; }
        .logo-icon { width: 38px; height: 38px; font-size: 17px; }
    }

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-hero: #0f172a;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 40px rgba(0,0,0,0.12);
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 48px;
            --space-xl: 80px;
            --header-height: 72px;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

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

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

        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: var(--primary); transition: color 0.2s ease; }
        a:hover { color: var(--primary-dark); }
        ul, ol { list-style: none; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; width: 100%; }

        /* ============ Header / Navigation ============ */
        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 8px rgba(15, 23, 42, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 24px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }

        .logo-sub {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 10px;
            border-radius: 20px;
            letter-spacing: 1px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-muted);
            padding: 8px 4px;
            transition: color 0.2s ease;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
            transform: scaleX(0);
            transition: transform 0.25s ease;
        }

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

        .nav-link:hover::after {
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after {
            transform: scaleX(1);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 8px 16px;
            gap: 8px;
            transition: box-shadow 0.2s ease, border-color 0.2s ease;
        }

        .search-box i {
            color: var(--text-muted);
            font-size: 13px;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text-main);
            width: 140px;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.12);
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            padding: 9px 22px;
            border-radius: 30px;
            border: none;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(37, 99, 235, 0.4);
            color: #fff;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: background 0.2s;
        }

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

        /* ============ Hero Banner ============ */
        .page-banner {
            background: linear-gradient(rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 90px 0 70px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.3), transparent 70%);
            border-radius: 50%;
        }

        .banner-content {
            max-width: 640px;
            position: relative;
            z-index: 2;
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 18px;
            backdrop-filter: blur(4px);
        }

        .banner-tag i {
            color: var(--accent);
        }

        .page-banner h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

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

        .banner-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .banner-meta {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .banner-meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.08);
            padding: 10px 18px;
            border-radius: 30px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
        }

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

        /* ============ Breadcrumb ============ */
        .breadcrumb-bar {
            padding: 24px 0;
            border-bottom: 1px solid var(--border);
            background: #fff;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
        }

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

        .breadcrumb-sep {
            margin: 0 12px;
            color: #cbd5e1;
        }

        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 600;
        }

        /* ============ Section Common ============ */
        .section {
            padding: 70px 0;
        }

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

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

        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 10px;
            background: var(--primary-light);
            padding: 5px 16px;
            border-radius: 30px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
            color: var(--text-main);
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ============ Feature Card Grid ============ */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 30px;
            border: 1px solid var(--border);
            transition: transform 0.2s ease, box-shadow 0.25s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity 0.2s ease;
        }

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

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

        .feature-icon {
            width: 54px;
            height: 54px;
            background: linear-gradient(135deg, var(--primary-light), #eff6ff);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            color: var(--primary);
            font-size: 22px;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .feature-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.65;
        }

        /* ============ Data Overview ============ */
        .stats-section {
            background: linear-gradient(135deg, #0f172a, #1e3a5f);
            color: #fff;
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: "";
            position: absolute;
            bottom: -100px;
            left: -50px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.3), transparent 70%);
            border-radius: 50%;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 2;
        }

        .stat-item {
            text-align: center;
            padding: 30px 20px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            transition: background 0.2s ease, transform 0.2s ease;
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: scale(1.02);
        }

        .stat-num {
            font-size: 38px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
            font-family: 'Segoe UI', var(--font-sans);
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
        }

        /* ============ Info List ============ */
        .info-card {
            display: flex;
            gap: 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--border);
            transition: box-shadow 0.2s ease, transform 0.2s ease;
            margin-bottom: 20px;
            align-items: center;
        }

        .info-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .info-thumb {
            flex-shrink: 0;
            width: 220px;
            height: 130px;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }

        .info-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

        .info-body {
            flex: 1;
        }

        .info-meta {
            display: flex;
            gap: 14px;
            margin-bottom: 6px;
            align-items: center;
            flex-wrap: wrap;
        }

        .info-meta .tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 12px;
            border-radius: 20px;
        }

        .info-meta .date {
            font-size: 13px;
            color: var(--text-muted);
        }

        .info-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .info-body p {
            font-size: 14px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ============ Data Dimension Cards ============ */
        .dimension-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .dimension-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 26px;
            border: 1px solid var(--border);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            text-align: center;
        }

        .dimension-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .dimension-card .dim-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), #fff);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
        }

        .dimension-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .dimension-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ============ Workflow ============ */
        .workflow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            counter-reset: step;
        }

        .workflow-item {
            text-align: center;
            position: relative;
            padding: 30px 20px;
        }

        .workflow-item::before {
            counter-increment: step;
            content: counter(step, decimal-leading-zero);
            display: block;
            font-size: 44px;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 12px;
            transition: color 0.2s ease;
        }

        .workflow-item:hover::before {
            color: var(--primary);
        }

        .workflow-item::after {
            content: "";
            position: absolute;
            top: 50%;
            right: -15px;
            width: 30px;
            height: 2px;
            background: var(--border);
        }

        .workflow-item:last-child::after {
            display: none;
        }

        .workflow-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .workflow-item p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ============ FAQ ============ */
        .faq-grid {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow 0.2s ease;
        }

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

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: background 0.2s ease;
        }

        .faq-question:hover {
            background: var(--bg-body);
        }

        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform 0.25s ease;
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 56px 0;
            color: #fff;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 15px;
            opacity: 0.9;
            margin-bottom: 24px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-btn {
            display: inline-block;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 15px;
            padding: 13px 34px;
            border-radius: 30px;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            box-shadow: 0 4px 14px rgba(255, 255, 255, 0.2);
        }

        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(255, 255, 255, 0.3);
            color: var(--primary-dark);
            background: #f1f5f9;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .brand-logo {
            margin-bottom: 14px;
        }

        .footer-brand .logo-text {
            color: #fff;
        }

        .footer-brand .logo-sub {
            background: rgba(37, 99, 235, 0.3);
            color: #bfdbfe;
        }

        .footer-brand p {
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

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

        .footer-col ul li a {
            color: #94a3b8;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

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

        .footer-contact p {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact i {
            color: var(--primary);
            width: 16px;
        }

        .footer-bottom {
            padding: 20px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            font-size: 13px;
        }

        .footer-bottom p {
            margin: 0;
        }

        /* ============ Responsive ============ */
        @media screen and (max-width: 1024px) {
            .feature-grid { grid-template-columns: repeat(2, 1fr); }
            .dimension-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .workflow-grid { grid-template-columns: repeat(2, 1fr); }
            .workflow-item::after { display: none; }
            .site-header .search-box { display: none; }
        }

        @media screen and (max-width: 768px) {
            .header-inner { flex-wrap: wrap; height: auto; padding: 12px 0; }
            .main-nav {
                flex-basis: 100%;
                order: 3;
                justify-content: flex-start;
                gap: 20px;
                flex-wrap: wrap;
                margin-top: 10px;
                padding-top: 4px;
            }
            .hamburger { display: block; }
            .header-actions { gap: 6px; }
            .nav-cta { display: none; }
            .page-banner { padding: 60px 0 50px; }
            .page-banner h1 { font-size: 30px; }
            .section { padding: 50px 0; }
            .section-title { font-size: 26px; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .info-card { flex-direction: column; align-items: flex-start; }
            .info-thumb { width: 100%; height: 180px; }
        }

        @media screen and (max-width: 520px) {
            .container { padding: 0 16px; }
            .brand-logo .logo-text { font-size: 17px; }
            .logo-sub { display: none; }
            .feature-grid { grid-template-columns: 1fr; }
            .dimension-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr; }
            .workflow-grid { grid-template-columns: 1fr; }
            .main-nav { gap: 14px; }
            .nav-link { font-size: 14px; }
            .breadcrumb { font-size: 13px; }
        }

        /* Focus states */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.5);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .nav-link:focus-visible { outline: none; }
        .nav-link:focus-visible::after { transform: scaleX(1); }
        .faq-question:focus-visible { outline: 2px solid rgba(37, 99, 235, 0.5); outline-offset: -2px; }