/* roulang page: index */
:root {
    --primary: #2067f5;
    --primary-rgb: 32, 103, 245;
    --primary-dark: #0e4ed0;
    --secondary: #ff6b35;
    --accent: #00c2a8;
    --bg: #f6f8fc;
    --bg-alt: #eef1f7;
    --dark: #152236;
    --card: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e3e9f2;
    --radius: 18px;
    --radius-sm: 10px;
    --shadow: 0 6px 24px rgba(32, 103, 245, 0.07);
    --shadow-lg: 0 16px 48px rgba(15, 78, 208, 0.12);
    --shadow-hover: 0 12px 36px rgba(32, 103, 245, 0.14);
    --transition: all .3s ease;
    --header-h: 76px;
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-main);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; padding-left: 0; margin-bottom: 0; }
.container { max-width: 1200px; }

.section-padding { padding: 92px 0; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 52px; }
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(var(--primary-rgb), .08);
    color: var(--primary);
    font-size: .85rem;
    font-weight: 600;
    padding: 7px 18px;
    border-radius: 100px;
    letter-spacing: .04em;
    margin-bottom: 16px;
}
.section-tag::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
.section-head h2 { font-size: 2.15rem; font-weight: 800; letter-spacing: -.02em; color: var(--dark); margin-bottom: 14px; }
.section-head p { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 0; }

.btn { border-radius: 50px; font-weight: 600; padding: 10px 26px; transition: var(--transition); }
.btn-primary { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover, .btn-primary:focus { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(var(--primary-rgb), .25); }
.btn-outline-primary { border-color: var(--primary); color: var(--primary); border-radius: 50px; }
.btn-outline-primary:hover { background: var(--primary); border-color: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(var(--primary-rgb), .2); }
.btn-light { background: #fff; border-color: #fff; color: var(--dark); border-radius: 50px; }
.btn-light:hover { background: #f0f5ff; border-color: #f0f5ff; transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0, 0, 0, .18); }
.btn-outline-light { border-color: rgba(255, 255, 255, .7); color: #fff; border-radius: 50px; }
.btn-outline-light:hover { background: rgba(255, 255, 255, .14); border-color: #fff; color: #fff; transform: translateY(-2px); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(227, 233, 242, .7);
    min-height: var(--header-h);
}
.site-header .navbar { min-height: var(--header-h); padding: 10px 0; }
.brand-custom {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -.01em;
}
.brand-custom .brand-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    font-size: 1.05rem;
    box-shadow: 0 4px 14px rgba(var(--primary-rgb), .28);
}
.navbar-nav { gap: 4px; }
.navbar-nav .nav-link {
    font-size: .95rem;
    font-weight: 600;
    color: var(--text);
    padding: 8px 16px !important;
    border-radius: 50px;
    position: relative;
}
.navbar-nav .nav-link:hover { color: var(--primary); background: rgba(var(--primary-rgb), .06); }
.navbar-nav .nav-link.active { color: var(--primary); background: rgba(var(--primary-rgb), .1); }
.navbar-toggler { border: none; padding: 8px 10px; }
.navbar-toggler:focus { box-shadow: none; }
.navbar-toggler-icon { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(30,41,59,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e"); }
.header-cta { margin-left: 12px; }

.hero {
    position: relative;
    padding: 148px 0 110px;
    background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    color: #fff;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg, rgba(14, 22, 40, .93) 0%, rgba(14, 22, 40, .72) 50%, rgba(14, 22, 40, .42) 100%);
}
.hero .container { position: relative; z-index: 2; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, .14);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, .24);
    padding: 8px 20px;
    border-radius: 100px;
    font-size: .85rem;
    font-weight: 500;
    letter-spacing: .04em;
    margin-bottom: 24px;
}
.hero-badge i { color: #ffd166; }
.hero h1 {
    font-size: 3.4rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -.02em;
    margin-bottom: 20px;
    max-width: 680px;
}
.hero .hero-desc {
    font-size: 1.18rem;
    color: rgba(255, 255, 255, .85);
    max-width: 560px;
    margin-bottom: 34px;
    line-height: 1.7;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 56px; }
.hero-stats {
    display: flex;
    gap: 0;
    max-width: 560px;
    background: rgba(255, 255, 255, .1);
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
    padding: 22px 0;
    overflow: hidden;
}
.hero-stat { flex: 1; text-align: center; padding: 0 16px; border-right: 1px solid rgba(255, 255, 255, .16); }
.hero-stat:last-child { border-right: none; }
.hero-stat strong { display: block; font-size: 1.9rem; font-weight: 800; color: #fff; line-height: 1.2; }
.hero-stat span { font-size: .85rem; color: rgba(255, 255, 255, .7); }

.features { background: var(--bg); }
.feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 30px;
    height: 100%;
    transition: var(--transition);
    box-shadow: 0 2px 6px rgba(0, 0, 0, .02);
    position: relative;
    overflow: hidden;
}
.feature-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(var(--primary-rgb), .18);
}
.feature-card:hover::after { opacity: 1; }
.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--primary);
    background: rgba(var(--primary-rgb), .1);
    margin-bottom: 22px;
    transition: var(--transition);
}
.feature-card:hover .feature-icon { background: var(--primary); color: #fff; transform: rotate(-6deg) scale(1.05); }
.feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; color: var(--dark); }
.feature-card p { color: var(--text-muted); font-size: .93rem; margin-bottom: 0; line-height: 1.65; }

.categories { background: var(--bg-alt); }
.category-card {
    position: relative;
    display: block;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    height: 100%;
    transition: var(--transition);
}
.category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.category-img { height: 230px; overflow: hidden; position: relative; }
.category-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.category-card:hover .category-img img { transform: scale(1.08); }
.category-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(14, 22, 40, .55));
}
.category-body { padding: 28px; position: relative; }
.category-tag {
    display: inline-block;
    font-size: .75rem;
    font-weight: 700;
    color: var(--primary);
    background: rgba(var(--primary-rgb), .1);
    padding: 4px 14px;
    border-radius: 100px;
    margin-bottom: 12px;
    letter-spacing: .04em;
}
.category-body h3 { font-size: 1.35rem; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.category-body p { color: var(--text-muted); font-size: .92rem; line-height: 1.65; margin-bottom: 18px; }
.category-link {
    font-weight: 600;
    font-size: .9rem;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.category-link i { transition: transform .3s; }
.category-card:hover .category-link i { transform: translateX(5px); }

.news-section { background: var(--bg); }
.news-list { display: flex; flex-direction: column; gap: 0; background: #fff; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); overflow: hidden; }
.news-item { padding: 26px 30px; border-bottom: 1px solid var(--border); transition: var(--transition); position: relative; }
.news-item:last-child { border-bottom: none; }
.news-item:hover { background: #f8faff; padding-left: 36px; }
.news-meta { display: flex; align-items: center; gap: 16px; margin-bottom: 10px; flex-wrap: wrap; }
.news-cat {
    font-size: .75rem;
    font-weight: 600;
    color: var(--primary);
    background: rgba(var(--primary-rgb), .1);
    padding: 3px 12px;
    border-radius: 100px;
}
.news-time { font-size: .82rem; color: var(--text-muted); }
.news-time i { margin-right: 4px; }
.news-item h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.news-item h3 a { color: var(--dark); }
.news-item h3 a:hover { color: var(--primary); }
.news-item p { color: var(--text-muted); font-size: .9rem; margin-bottom: 12px; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-more { font-size: .85rem; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.news-more i { transition: transform .3s; }
.news-more:hover i { transform: translateX(4px); }
.news-empty { text-align: center; padding: 80px 30px; color: var(--text-muted); }
.news-empty i { font-size: 2.2rem; color: #cbd5e1; margin-bottom: 14px; display: block; }

.news-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card { background: #fff; border-radius: var(--radius); border: 1px solid var(--border); padding: 26px; box-shadow: var(--shadow); }
.sidebar-card h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 18px; color: var(--dark); display: flex; align-items: center; gap: 8px; }
.sidebar-card h4 i { color: var(--primary); }
.hot-list { display: flex; flex-direction: column; }
.hot-list li { display: flex; align-items: baseline; gap: 14px; padding: 10px 0; border-bottom: 1px dashed var(--border); }
.hot-list li:last-child { border-bottom: none; padding-bottom: 0; }
.hot-list li:first-child { padding-top: 0; }
.hot-list span { font-size: 1.1rem; font-weight: 800; color: #cbd5e1; min-width: 28px; }
.hot-list a { font-size: .9rem; color: var(--text); line-height: 1.5; }
.hot-list a:hover { color: var(--primary); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-item {
    font-size: .82rem;
    padding: 6px 15px;
    border-radius: 100px;
    background: var(--bg-alt);
    color: var(--text);
    border: 1px solid var(--border);
    font-weight: 500;
    transition: var(--transition);
}
.tag-item:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 16px rgba(var(--primary-rgb), .24); }

.stats-section {
    position: relative;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    padding: 92px 0;
    color: #fff;
}
.stats-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(14, 22, 40, .95) 0%, rgba(14, 22, 40, .82) 100%);
}
.stats-section .container { position: relative; z-index: 2; }
.stats-inner { text-align: center; }
.stat-item {
    padding: 34px 20px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .14);
    backdrop-filter: blur(8px);
    transition: var(--transition);
}
.stat-item:hover { background: rgba(255, 255, 255, .12); transform: translateY(-4px); }
.stat-item i { font-size: 1.7rem; color: #ffd166; display: block; margin-bottom: 14px; }
.stat-item strong { font-size: 2.2rem; font-weight: 800; display: block; line-height: 1.2; }
.stat-item span { font-size: .88rem; color: rgba(255, 255, 255, .7); }

.process-section { background: var(--bg-alt); }
.process-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 34px 26px;
    text-align: center;
    border: 1px solid var(--border);
    position: relative;
    height: 100%;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .03);
    transition: var(--transition);
}
.process-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.process-num {
    position: absolute;
    top: 18px;
    right: 22px;
    font-size: 2.4rem;
    font-weight: 800;
    color: rgba(var(--primary-rgb), .08);
    line-height: 1;
}
.process-card > i { font-size: 2rem; color: var(--primary); background: rgba(var(--primary-rgb), .1); width: 64px; height: 64px; border-radius: 18px; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; transition: var(--transition); }
.process-card:hover > i { background: var(--primary); color: #fff; transform: rotate(-6deg) scale(1.05); }
.process-card h4 { font-size: 1.08rem; font-weight: 700; margin-bottom: 10px; color: var(--dark); }
.process-card p { font-size: .88rem; color: var(--text-muted); margin-bottom: 0; line-height: 1.6; }

.featured-section { background: var(--bg); }
.featured-card {
    display: flex;
    flex-direction: row;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    height: 100%;
    transition: var(--transition);
}
.featured-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.featured-img { flex: 0 0 42%; max-width: 42%; }
.featured-img img { width: 100%; height: 100%; object-fit: cover; min-height: 240px; }
.featured-body { padding: 26px 24px; display: flex; flex-direction: column; justify-content: center; }
.featured-body .category-tag { align-self: flex-start; margin-bottom: 10px; }
.featured-body h3 { font-size: 1.12rem; font-weight: 700; line-height: 1.45; color: var(--dark); margin-bottom: 10px; }
.featured-body h3 a { color: inherit; }
.featured-body h3 a:hover { color: var(--primary); }
.featured-body p { font-size: .88rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.featured-link { font-size: .85rem; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.featured-link i { transition: transform .3s; }
.featured-card:hover .featured-link i { transform: translateX(4px); }

.faq-section { background: var(--bg-alt); }
.faq-head .section-tag { margin-bottom: 14px; }
.faq-head h2 { font-size: 2rem; font-weight: 800; color: var(--dark); margin-bottom: 16px; letter-spacing: -.02em; }
.faq-head p { color: var(--text-muted); font-size: 1rem; }
.accordion .accordion-item {
    border: 1px solid var(--border);
    border-radius: 12px !important;
    margin-bottom: 14px;
    overflow: hidden;
    box-shadow: none;
    background: #fff;
}
.accordion .accordion-button {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    background: #fff;
    padding: 20px 24px;
    box-shadow: none;
    border-radius: 0 !important;
}
.accordion .accordion-button:not(.collapsed) {
    color: var(--primary);
    background: #f0f5ff;
}
.accordion .accordion-button:focus {
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), .12);
    border-color: transparent;
}
.accordion .accordion-button::after {
    background-size: 1rem;
    opacity: .55;
}
.accordion .accordion-body {
    padding: 6px 24px 22px;
    font-size: .93rem;
    color: var(--text-muted);
    line-height: 1.7;
    background: #f0f5ff;
}

.cta-section { padding: 80px 0; background: var(--bg); }
.cta-inner {
    background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
    border-radius: 24px;
    padding: 72px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
    color: #fff;
    box-shadow: var(--shadow-lg);
}
.cta-inner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(125deg, rgba(var(--primary-rgb), .92) 0%, rgba(14, 22, 40, .88) 100%);
}
.cta-content { position: relative; z-index: 2; max-width: 660px; margin: 0 auto; }
.cta-content h2 { font-size: 2rem; font-weight: 800; margin-bottom: 18px; }
.cta-content p { font-size: 1.05rem; color: rgba(255, 255, 255, .85); margin-bottom: 32px; line-height: 1.7; }
.cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.site-footer {
    background: var(--dark);
    color: #94a3b8;
    padding: 72px 0 0;
    font-size: .9rem;
}
.site-footer .footer-brand { display: flex; align-items: center; gap: 10px; font-size: 1.22rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
.site-footer .footer-brand .brand-icon { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; display: flex; align-items: center; justify-content: center; font-size: .95rem; }
.site-footer p { color: #94a3b8; line-height: 1.7; }
.site-footer h5 { font-size: 1rem; font-weight: 600; color: #e2e8f0; margin-bottom: 20px; letter-spacing: .02em; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer ul li a { color: #94a3b8; font-size: .9rem; transition: var(--transition); }
.site-footer ul li a:hover { color: var(--primary); padding-left: 4px; }
.site-footer ul li i { width: 20px; color: #64748b; margin-right: 6px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(255, 255, 255, .06);
    color: #94a3b8;
    transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
.footer-bottom {
    margin-top: 60px;
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: .82rem;
    color: #64748b;
}
.footer-bottom p { margin-bottom: 0; font-size: .82rem; color: #64748b; }

.mobile-tab-bar { display: none; }

@media (max-width: 991.98px) {
    .section-padding { padding: 64px 0; }
    .hero { padding: 110px 0 80px; }
    .hero h1 { font-size: 2.4rem; }
    .hero .hero-desc { font-size: 1rem; }
    .navbar-collapse {
        background: #fff;
        padding: 16px;
        border-radius: 14px;
        box-shadow: var(--shadow-lg);
        margin-top: 12px;
        border: 1px solid var(--border);
    }
    .navbar-nav .nav-link { padding: 10px 16px !important; }
    .header-cta { margin: 12px 0 0 16px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .mobile-tab-bar {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 999;
        background: rgba(255, 255, 255, .96);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-top: 1px solid var(--border);
        box-shadow: 0 -4px 24px rgba(15, 78, 208, .08);
        padding: 8px 0 calc(8px + env(safe-area-inset-bottom));
        justify-content: space-around;
    }
    .mobile-tab {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 3px;
        font-size: .7rem;
        font-weight: 600;
        color: var(--text-muted);
        padding: 6px 14px;
        border-radius: 12px;
        transition: var(--transition);
        min-width: 60px;
    }
    .mobile-tab i { font-size: 1.2rem; }
    .mobile-tab.active { color: var(--primary); background: rgba(var(--primary-rgb), .08); }
    .mobile-tab:hover { color: var(--primary); }
    body { padding-bottom: 68px; }
}

@media (max-width: 767.98px) {
    .section-head h2 { font-size: 1.6rem; }
    .hero h1 { font-size: 1.9rem; }
    .hero { padding: 88px 0 64px; }
    .hero-badge { font-size: .78rem; padding: 6px 14px; }
    .hero-stats { flex-wrap: wrap; padding: 8px 0; }
    .hero-stat { min-width: 33.33%; padding: 14px 8px; }
    .hero-stat strong { font-size: 1.45rem; }
    .hero-btns { gap: 10px; }
    .hero-btns .btn { padding: 9px 22px; font-size: .92rem; }
    .category-img { height: 180px; }
    .featured-card { flex-direction: column; }
    .featured-img { flex: none; max-width: 100%; }
    .featured-img img { min-height: 180px; }
    .cta-inner { padding: 48px 24px; border-radius: 18px; }
    .cta-content h2 { font-size: 1.5rem; }
    .process-card { padding: 26px 20px; }
    .site-footer { padding-top: 52px; }
    .news-item { padding: 20px; }
    .news-item:hover { padding-left: 22px; }
    .sidebar-card { padding: 20px; }
    .accordion .accordion-button { font-size: .92rem; padding: 16px 18px; }
    .stats-section { padding: 60px 0; }
    .stat-item strong { font-size: 1.6rem; }
}

@media (max-width: 520px) {
    .hero h1 { font-size: 1.7rem; }
    .hero .hero-desc { font-size: .95rem; }
    .hero-badge { font-size: .72rem; }
    .section-tag { font-size: .78rem; }
    .cta-btns .btn { width: 100%; text-align: center; }
    .footer-bottom { padding: 18px 0; }
}

/* roulang page: category1 */
:root {
            --primary: #e8503a;
            --primary-dark: #c93a26;
            --primary-light: #fff1ee;
            --secondary: #1e2a4a;
            --accent: #ffb800;
            --bg: #f8f9fc;
            --bg-alt: #ffffff;
            --text: #1a1a2e;
            --text-weak: #5c6b8a;
            --border: #e8ecf4;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow: 0 4px 20px rgba(26, 26, 46, 0.08);
            --shadow-lg: 0 12px 40px rgba(26, 26, 46, 0.12);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            padding-bottom: 64px;
        }

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

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

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

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1020;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(26, 26, 46, 0.06);
        }

        .site-header .navbar {
            min-height: 72px;
            padding: 8px 0;
        }

        .brand-custom,
        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
        }

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

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            color: #fff;
            font-size: 17px;
            box-shadow: 0 4px 14px rgba(232, 80, 58, 0.35);
        }

        .site-header .navbar-nav {
            gap: 4px;
        }

        .site-header .nav-link {
            font-weight: 600;
            font-size: 15px;
            color: var(--text-weak);
            padding: 10px 18px !important;
            border-radius: 40px;
            position: relative;
        }

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

        .site-header .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .site-header .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .header-cta {
            border-radius: 40px;
            padding: 9px 22px;
            font-weight: 600;
            font-size: 14px;
            background: var(--primary);
            border: none;
            box-shadow: 0 4px 14px rgba(232, 80, 58, 0.3);
            transition: var(--transition);
        }

        .header-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 80, 58, 0.4);
        }

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

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

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(232,80,58,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .mobile-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border);
            box-shadow: 0 -4px 20px rgba(26, 26, 46, 0.08);
            padding: 6px 0;
            justify-content: space-around;
            flex-wrap: nowrap;
        }

        .mobile-tab-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 10px;
            min-width: 64px;
            border-radius: 12px;
            color: var(--text-weak);
            font-size: 11px;
            font-weight: 600;
            transition: var(--transition);
        }

        .mobile-tab-nav .tab-item i {
            font-size: 18px;
        }

        .mobile-tab-nav .tab-item:hover,
        .mobile-tab-nav .tab-item.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .mobile-tab-nav .tab-item.cta-tab {
            background: linear-gradient(135deg, var(--primary), #ff6a45);
            color: #fff;
            border-radius: 14px;
            padding: 6px 16px;
            box-shadow: 0 4px 14px rgba(232, 80, 58, 0.35);
        }

        /* 页面Banner */
        .page-banner {
            background: linear-gradient(135deg, rgba(30, 42, 74, 0.85), rgba(232, 80, 58, 0.65)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 90px 0 80px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .page-banner::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .page-banner .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 16px;
        }

        .page-banner .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.85);
        }

        .page-banner .breadcrumb-custom a:hover {
            color: #fff;
        }

        .page-banner .banner-tag {
            display: inline-block;
            background: rgba(255, 184, 0, 0.2);
            border: 1px solid rgba(255, 184, 0, 0.5);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            margin-bottom: 14px;
            line-height: 1.3;
            letter-spacing: 1px;
        }

        .page-banner p {
            font-size: 16px;
            max-width: 620px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 24px;
            line-height: 1.8;
        }

        /* 通用板块 */
        .section-block {
            padding: 72px 0;
        }

        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-head .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 30px;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .section-head p {
            color: var(--text-weak);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto;
        }

        /* 分类介绍 */
        .intro-block {
            background: var(--bg-alt);
        }

        .intro-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px;
            height: 100%;
            transition: var(--transition);
        }

        .intro-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: transparent;
        }

        .intro-icon {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            margin-bottom: 18px;
            box-shadow: 0 6px 18px rgba(232, 80, 58, 0.25);
        }

        .intro-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .intro-card p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* 项目指南卡片 */
        .guide-section {
            background: var(--bg);
        }

        .guide-card {
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
        }

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

        .guide-card .card-img-wrap {
            position: relative;
            height: 210px;
            overflow: hidden;
        }

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

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

        .guide-card .card-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(30, 42, 74, 0.05), rgba(30, 42, 74, 0.25));
        }

        .guide-card .card-body {
            padding: 24px;
            position: relative;
        }

        .guide-card .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }

        .guide-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .guide-card .card-desc {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.65;
            margin-bottom: 16px;
        }

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

        .guide-card .card-meta span i {
            color: var(--primary);
            margin-right: 4px;
        }

        /* 流程 */
        .process-block {
            background: linear-gradient(135deg, #1e2a4a 0%, #283a67 60%, #354a80 100%);
            color: #fff;
            padding: 72px 0;
        }

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

        .process-block .section-head p {
            color: rgba(255, 255, 255, 0.75);
        }

        .process-block .section-tag {
            background: rgba(255, 184, 0, 0.18);
            color: var(--accent);
        }

        .process-item {
            text-align: center;
            padding: 28px 20px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            height: 100%;
            transition: var(--transition);
            position: relative;
        }

        .process-item:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-4px);
        }

        .process-num {
            font-size: 44px;
            font-weight: 900;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 14px;
            font-style: italic;
        }

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

        .process-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .process-arrow {
            display: none;
        }

        /* 教程列表 */
        .list-block {
            background: var(--bg-alt);
        }

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

        .tutorial-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            margin-bottom: 14px;
            transition: var(--transition);
            cursor: pointer;
        }

        .tutorial-item:hover {
            border-color: transparent;
            box-shadow: var(--shadow);
            transform: translateX(6px);
        }

        .tutorial-item .t-icon {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .tutorial-item .t-content {
            flex: 1;
            min-width: 0;
        }

        .tutorial-item .t-content h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .tutorial-item .t-content p {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .tutorial-item .t-meta {
            flex-shrink: 0;
            text-align: right;
            font-size: 13px;
            color: var(--text-weak);
        }

        .tutorial-item .t-meta .views {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 14px;
            font-weight: 600;
        }

        .tutorial-item .t-meta .views i {
            color: var(--primary);
        }

        /* 贴士 */
        .tips-block {
            background: var(--bg);
        }

        .tip-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 22px;
            height: 100%;
            transition: var(--transition);
        }

        .tip-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .tip-item .tip-num {
            width: 34px;
            height: 34px;
            flex-shrink: 0;
            background: var(--secondary);
            color: var(--accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 800;
        }

        .tip-item .tip-text h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .tip-item .tip-text p {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-block {
            background: var(--bg-alt);
        }

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

        .faq-item:hover {
            border-color: rgba(232, 80, 58, 0.3);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            list-style: none;
            transition: var(--transition);
        }

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

        .faq-item summary:hover {
            color: var(--primary);
        }

        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

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

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

        /* CTA */
        .cta-block {
            background: linear-gradient(135deg, rgba(30, 42, 74, 0.88), rgba(232, 80, 58, 0.78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 80px 0;
            color: #fff;
            text-align: center;
            position: relative;
        }

        .cta-block h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-block p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--secondary);
            font-weight: 700;
            font-size: 16px;
            padding: 12px 36px;
            border-radius: 40px;
            border: none;
            box-shadow: 0 8px 28px rgba(255, 184, 0, 0.35);
            transition: var(--transition);
        }

        .cta-btn:hover {
            background: #ffc940;
            color: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(255, 184, 0, 0.5);
        }

        .cta-btn i {
            font-size: 18px;
        }

        /* 页脚 */
        .site-footer {
            background: #161c30;
            color: rgba(255, 255, 255, 0.75);
            padding-top: 60px;
            padding-bottom: 70px;
            font-size: 14px;
        }

        .site-footer .footer-top {
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 24px;
        }

        .site-footer .footer-brand {
            color: #fff;
            font-size: 20px;
            margin-bottom: 14px;
        }

        .site-footer .footer-brand .brand-icon {
            width: 34px;
            height: 34px;
            font-size: 15px;
        }

        .site-footer .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer p {
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .site-footer h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }

        .site-footer h5::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }

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

        .site-footer ul li {
            padding: 5px 0;
        }

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
        }

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

        .site-footer ul li i {
            margin-right: 6px;
            color: var(--accent);
        }

        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* 响应式 */
        @media (max-width: 991px) {
            .site-header .navbar-toggler {
                display: none;
            }

            .site-header .navbar-collapse {
                display: none !important;
            }

            .mobile-tab-nav {
                display: flex;
            }

            .page-banner {
                padding: 64px 0 56px;
            }

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

            .section-block {
                padding: 56px 0;
            }

            .section-head h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 767px) {
            body {
                padding-bottom: 70px;
            }

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

            .page-banner {
                padding: 52px 0 44px;
            }

            .page-banner h1 {
                font-size: 26px;
            }

            .page-banner p {
                font-size: 14px;
            }

            .section-block {
                padding: 44px 0;
            }

            .section-head {
                margin-bottom: 30px;
            }

            .section-head h2 {
                font-size: 22px;
            }

            .section-head p {
                font-size: 14px;
            }

            .guide-card .card-img-wrap {
                height: 180px;
            }

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

            .tutorial-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding: 16px 18px;
            }

            .tutorial-item .t-meta {
                text-align: left;
                width: 100%;
            }

            .tutorial-item .t-content h4 {
                white-space: normal;
            }

            .tutorial-item .t-content p {
                white-space: normal;
            }

            .process-item {
                padding: 20px 16px;
            }

            .cta-block {
                padding: 50px 0;
            }

            .cta-block h2 {
                font-size: 24px;
            }

            .cta-btn {
                padding: 10px 28px;
                font-size: 15px;
            }

            .faq-item summary {
                padding: 15px 18px;
                font-size: 15px;
            }

            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 13px;
            }

            .site-footer {
                padding-top: 40px;
                padding-bottom: 80px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

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

            .mobile-tab-nav .tab-item {
                min-width: 56px;
                font-size: 10px;
                padding: 5px 8px;
            }

            .mobile-tab-nav .tab-item i {
                font-size: 16px;
            }

            .mobile-tab-nav .tab-item.cta-tab {
                padding: 5px 12px;
            }

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

            .intro-card {
                padding: 22px;
            }

            .tutorial-item .t-icon {
                width: 38px;
                height: 38px;
                font-size: 15px;
            }

            .tip-item {
                padding: 16px;
            }

            .process-num {
                font-size: 34px;
            }
        }

/* roulang page: category2 */
:root {
        --primary: #0d1b3e;
        --primary-light: #1b2f5c;
        --primary-dark: #081226;
        --accent: #ff7a1a;
        --accent-hover: #e5660a;
        --accent-soft: #fff0e6;
        --bg-body: #f5f7fb;
        --bg-card: #ffffff;
        --bg-dark: #081226;
        --text-main: #1a2333;
        --text-muted: #5b6b82;
        --text-light: #8a97ad;
        --border: #e3e9f2;
        --radius: 16px;
        --radius-sm: 10px;
        --shadow-sm: 0 2px 8px rgba(13, 27, 62, 0.06);
        --shadow-md: 0 6px 24px rgba(13, 27, 62, 0.10);
        --shadow-lg: 0 12px 36px rgba(13, 27, 62, 0.16);
        --transition: all 0.3s ease;
        --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "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-family);
        color: var(--text-main);
        background-color: var(--bg-body);
        line-height: 1.7;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
    }

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

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

    .container {
        max-width: 1220px;
        padding-left: 20px;
        padding-right: 20px;
    }

    .site-header {
        background: rgba(255, 255, 255, 0.96);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 1050;
        box-shadow: 0 2px 12px rgba(13, 27, 62, 0.05);
    }

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

    .brand-custom {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: 0.5px;
    }

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

    .brand-icon {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--accent), #ff9a4d);
        color: #fff;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 17px;
        box-shadow: 0 4px 12px rgba(255, 122, 26, 0.35);
    }

    .navbar-nav {
        gap: 4px;
    }

    .navbar-nav .nav-link {
        font-size: 15px;
        font-weight: 500;
        color: var(--text-main);
        padding: 8px 18px;
        border-radius: 8px;
        position: relative;
    }

    .navbar-nav .nav-link:hover {
        color: var(--accent);
        background: var(--accent-soft);
    }

    .navbar-nav .nav-link.active {
        color: var(--accent);
        font-weight: 600;
        background: var(--accent-soft);
    }

    .navbar-nav .nav-link.active::after {
        content: '';
        position: absolute;
        bottom: 4px;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 3px;
        border-radius: 3px;
        background: var(--accent);
    }

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

    .navbar-toggler:focus {
        box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.25);
    }

    .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(13,27,62,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    .header-cta {
        padding: 8px 22px;
        font-size: 14px;
        font-weight: 600;
        border-radius: 50px;
        background: linear-gradient(135deg, var(--accent), #ff9a4d);
        border: none;
        color: #fff;
        box-shadow: 0 4px 14px rgba(255, 122, 26, 0.3);
        transition: var(--transition);
    }

    .header-cta:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(255, 122, 26, 0.4);
        color: #fff;
    }

    .btn-primary {
        background: var(--primary);
        border-color: var(--primary);
        border-radius: 8px;
        font-weight: 600;
    }

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

    .btn-outline-light:hover {
        background: rgba(255, 255, 255, 0.12);
        color: #fff;
        border-color: rgba(255, 255, 255, 0.8);
    }

    .mobile-tab-bar {
        display: none;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: #fff;
        border-top: 1px solid var(--border);
        z-index: 1050;
        padding: 6px 12px;
        box-shadow: 0 -2px 6px rgba(13, 27, 62, 0.04);
        justify-content: space-around;
    }

    .mobile-tab-bar a {
        display: flex;
        flex-direction: column;
        align-items: center;
        font-size: 11px;
        color: var(--text-muted);
        padding: 4px 8px;
        border-radius: 10px;
        gap: 2px;
    }

    .mobile-tab-bar a i {
        font-size: 18px;
    }

    .mobile-tab-bar a.active {
        color: var(--accent);
        background: var(--accent-soft);
        font-weight: 600;
    }

    .page-banner {
        background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, var(--primary-light) 100%);
        padding: 70px 0;
        color: #fff;
        position: relative;
        overflow: hidden;
    }

    .page-banner .banner-bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        opacity: 0.28;
        z-index: 0;
    }

    .page-banner .container {
        position: relative;
        z-index: 1;
    }

    .banner-inner {
        max-width: 760px;
    }

    .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: 50px;
        font-size: 13px;
        color: #f3c6a0;
        margin-bottom: 20px;
    }

    .banner-tag i {
        font-size: 14px;
    }

    .page-banner h1 {
        font-size: 40px;
        font-weight: 700;
        letter-spacing: 1px;
        margin-bottom: 14px;
    }

    .page-banner p {
        font-size: 17px;
        color: rgba(255, 255, 255, 0.8);
        line-height: 1.8;
        margin-bottom: 24px;
    }

    .banner-meta {
        display: flex;
        gap: 20px;
        font-size: 14px;
        color: rgba(255, 255, 255, 0.7);
    }

    .banner-meta span {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

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

    .breadcrumb-custom {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 13px;
        margin-top: 30px;
        padding-top: 16px;
        border-top: 1px solid rgba(255, 255, 255, 0.12);
    }

    .breadcrumb-custom a {
        color: rgba(255, 255, 255, 0.6);
    }

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

    .breadcrumb-custom .sep {
        color: rgba(255, 255, 255, 0.3);
    }

    .breadcrumb-custom .current {
        color: #fff;
    }

    .section-block {
        padding: 76px 0;
    }

    .section-header {
        margin-bottom: 44px;
    }

    .section-eyebrow {
        color: var(--accent);
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 3px;
        text-transform: uppercase;
        margin-bottom: 8px;
        display: inline-flex;
        align-items: center;
        gap: 10px;
    }

    .section-eyebrow::before {
        content: '';
        width: 26px;
        height: 2px;
        background: var(--accent);
        border-radius: 2px;
        display: inline-block;
    }

    .section-title {
        font-size: 32px;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 10px;
        letter-spacing: 0.5px;
    }

    .section-desc {
        color: var(--text-muted);
        font-size: 16px;
        max-width: 600px;
    }

    .filter-tabs {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        margin-bottom: 0;
    }

    .filter-tab {
        padding: 9px 24px;
        border-radius: 50px;
        border: 1px solid var(--border);
        background: #fff;
        font-size: 14px;
        font-weight: 500;
        color: var(--text-muted);
        cursor: pointer;
        transition: var(--transition);
    }

    .filter-tab:hover {
        border-color: var(--accent);
        color: var(--accent);
        background: var(--accent-soft);
    }

    .filter-tab.active {
        background: var(--primary);
        border-color: var(--primary);
        color: #fff;
        box-shadow: 0 4px 14px rgba(13, 27, 62, 0.25);
    }

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

    .news-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-md);
        border-color: rgba(255, 122, 26, 0.3);
    }

    .news-card .card-img-wrap {
        position: relative;
        overflow: hidden;
        height: 220px;
        background: var(--primary-light);
    }

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

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

    .card-badge {
        position: absolute;
        top: 16px;
        left: 16px;
        background: var(--accent);
        color: #fff;
        font-size: 12px;
        font-weight: 600;
        padding: 5px 14px;
        border-radius: 50px;
        box-shadow: 0 2px 10px rgba(255, 122, 26, 0.4);
    }

    .card-meta {
        display: flex;
        align-items: center;
        gap: 16px;
        font-size: 13px;
        color: var(--text-light);
        padding: 16px 20px 0;
    }

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

    .card-meta i {
        font-size: 13px;
    }

    .news-card h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-main);
        padding: 12px 20px 8px;
        line-height: 1.5;
    }

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

    .news-card h3 a:hover {
        color: var(--accent);
    }

    .news-card .card-text {
        padding: 0 20px 14px;
        color: var(--text-muted);
        font-size: 14px;
        line-height: 1.65;
        flex: 1;
    }

    .news-card .card-footer-link {
        padding: 12px 20px 18px;
    }

    .news-card .card-footer-link a {
        font-size: 14px;
        font-weight: 600;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .news-card .card-footer-link a:hover {
        color: var(--accent);
        gap: 10px;
    }

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

    .rank-item {
        display: flex;
        gap: 16px;
        padding: 18px 0;
        border-bottom: 1px solid var(--border);
        align-items: center;
    }

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

    .rank-num {
        width: 34px;
        height: 34px;
        border-radius: 8px;
        background: var(--bg-body);
        color: var(--text-muted);
        font-weight: 700;
        font-size: 15px;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .rank-item:nth-child(1) .rank-num {
        background: var(--accent);
        color: #fff;
    }

    .rank-item:nth-child(2) .rank-num {
        background: #f0a43a;
        color: #fff;
    }

    .rank-item:nth-child(3) .rank-num {
        background: #64748b;
        color: #fff;
    }

    .rank-content {
        flex: 1;
    }

    .rank-content h4 {
        font-size: 15px;
        font-weight: 600;
        margin-bottom: 4px;
        line-height: 1.4;
    }

    .rank-content h4 a {
        color: var(--text-main);
    }

    .rank-content h4 a:hover {
        color: var(--accent);
    }

    .rank-content p {
        font-size: 13px;
        color: var(--text-light);
        margin: 0;
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .sidebar-card {
        background: #fff;
        border-radius: var(--radius);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        padding: 26px;
        margin-bottom: 28px;
    }

    .sidebar-title {
        font-size: 18px;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 16px;
        padding-bottom: 12px;
        border-bottom: 2px solid var(--accent-soft);
        display: flex;
        align-items: center;
        gap: 8px;
    }

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

    .hot-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .hot-tags a {
        display: inline-block;
        padding: 6px 16px;
        border-radius: 50px;
        background: var(--bg-body);
        color: var(--text-muted);
        font-size: 13px;
        font-weight: 500;
        border: 1px solid var(--border);
        transition: var(--transition);
    }

    .hot-tags a:hover {
        background: var(--accent);
        color: #fff;
        border-color: var(--accent);
    }

    .feature-card {
        position: relative;
        border-radius: var(--radius);
        overflow: hidden;
        height: 300px;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        border: none;
    }

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

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

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

    .feature-card .feature-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 30%, rgba(8, 18, 38, 0.92) 100%);
        z-index: 1;
    }

    .feature-card .feature-content {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 26px;
        z-index: 2;
        color: #fff;
    }

    .feature-card .feature-tag {
        display: inline-block;
        background: var(--accent);
        color: #fff;
        font-size: 12px;
        font-weight: 600;
        padding: 4px 12px;
        border-radius: 50px;
        margin-bottom: 10px;
    }

    .feature-card h3 {
        font-size: 20px;
        font-weight: 700;
        margin-bottom: 8px;
        line-height: 1.4;
    }

    .feature-card p {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.75);
        margin: 0;
        line-height: 1.6;
    }

    .stats-section {
        background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
        padding: 76px 0;
        color: #fff;
        position: relative;
        overflow: hidden;
    }

    .stats-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-3.png');
        background-size: cover;
        background-position: center;
        opacity: 0.15;
    }

    .stats-section .container {
        position: relative;
        z-index: 1;
    }

    .stat-item {
        text-align: center;
        padding: 24px;
    }

    .stat-num {
        font-size: 52px;
        font-weight: 700;
        color: var(--accent);
        line-height: 1.2;
        margin-bottom: 6px;
        font-family: 'Segoe UI', sans-serif;
    }

    .stat-label {
        font-size: 15px;
        color: rgba(255, 255, 255, 0.8);
        letter-spacing: 1px;
    }

    .cta-box {
        background: linear-gradient(135deg, var(--accent) 0%, #ff9a4d 100%);
        border-radius: 24px;
        padding: 48px;
        position: relative;
        overflow: hidden;
        color: #fff;
        box-shadow: 0 16px 40px rgba(255, 122, 26, 0.25);
    }

    .cta-box::before {
        content: '';
        position: absolute;
        width: 220px;
        height: 220px;
        background: rgba(255, 255, 255, 0.08);
        border-radius: 50%;
        top: -60px;
        right: -40px;
    }

    .cta-box::after {
        content: '';
        position: absolute;
        width: 120px;
        height: 120px;
        background: rgba(255, 255, 255, 0.06);
        border-radius: 50%;
        bottom: -30px;
        left: 20%;
    }

    .cta-box h2 {
        font-size: 30px;
        font-weight: 700;
        margin-bottom: 12px;
    }

    .cta-box p {
        font-size: 15px;
        color: rgba(255, 255, 255, 0.9);
        margin-bottom: 18px;
        max-width: 480px;
    }

    .cta-form {
        display: flex;
        gap: 10px;
        max-width: 460px;
        position: relative;
        z-index: 2;
    }

    .cta-form .form-control {
        border-radius: 50px;
        border: none;
        padding: 12px 22px;
        font-size: 14px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    }

    .cta-form .form-control:focus {
        outline: none;
        box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
    }

    .cta-form .btn-cta {
        padding: 12px 30px;
        border-radius: 50px;
        background: var(--primary);
        color: #fff;
        font-weight: 600;
        border: none;
        white-space: nowrap;
        transition: var(--transition);
    }

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

    .cta-note {
        font-size: 13px;
        color: rgba(255, 255, 255, 0.7);
        margin-top: 14px;
    }

    .faq-wrap {
        max-width: 860px;
        margin: 0 auto;
    }

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

    .accordion-button {
        background: #fff;
        font-size: 16px;
        font-weight: 600;
        color: var(--primary);
        padding: 20px 24px;
    }

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

    .accordion-button::after {
        transition: var(--transition);
    }

    .accordion-button:focus {
        box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.2);
    }

    .accordion-body {
        background: #fff;
        color: var(--text-muted);
        font-size: 15px;
        padding: 0 24px 20px;
        line-height: 1.8;
    }

    .accordion-body strong {
        color: var(--primary);
    }

    .site-footer {
        background: var(--primary-dark);
        color: rgba(255, 255, 255, 0.7);
        padding: 60px 0 0;
        margin-top: 0;
    }

    .site-footer .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 14px;
    }

    .site-footer .footer-brand .brand-icon {
        width: 36px;
        height: 36px;
        font-size: 15px;
    }

    .site-footer p {
        font-size: 14px;
        line-height: 1.8;
        max-width: 360px;
    }

    .site-footer h5 {
        color: #fff;
        font-size: 16px;
        font-weight: 600;
        margin-bottom: 18px;
        position: relative;
        padding-bottom: 10px;
    }

    .site-footer h5::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 24px;
        height: 2px;
        background: var(--accent);
        border-radius: 2px;
    }

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

    .site-footer ul li {
        margin-bottom: 10px;
        font-size: 14px;
    }

    .site-footer ul a {
        color: rgba(255, 255, 255, 0.65);
        transition: var(--transition);
    }

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

    .footer-social {
        display: flex;
        gap: 12px;
        margin-top: 20px;
    }

    .footer-social a {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        background: rgba(255, 255, 255, 0.08);
        color: rgba(255, 255, 255, 0.8);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        transition: var(--transition);
    }

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

    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        padding: 20px 0;
        margin-top: 48px;
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 8px;
    }

    .footer-bottom p {
        font-size: 13px;
        margin: 0;
        color: rgba(255, 255, 255, 0.4);
    }

    @media (max-width: 1024px) {
        .page-banner {
            padding: 56px 0;
        }

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

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

        .section-title {
            font-size: 27px;
        }

        .stat-num {
            font-size: 40px;
        }
    }

    @media (max-width: 768px) {
        .site-header {
            position: sticky;
        }

        .site-header .navbar {
            padding: 10px 0;
        }

        .brand-custom {
            font-size: 17px;
        }

        .brand-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
        }

        .page-banner {
            padding: 44px 0;
        }

        .page-banner h1 {
            font-size: 28px;
        }

        .banner-meta {
            flex-wrap: wrap;
            gap: 10px;
        }

        .section-block {
            padding: 50px 0;
        }

        .section-title {
            font-size: 24px;
        }

        .feature-card {
            height: 250px;
        }

        .cta-box {
            padding: 36px 24px;
        }

        .cta-form {
            flex-direction: column;
        }

        .cta-form .btn-cta {
            width: 100%;
            text-align: center;
        }

        .footer-bottom {
            justify-content: center;
            text-align: center;
        }
    }

    @media (max-width: 520px) {
        .page-banner h1 {
            font-size: 24px;
        }

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

        .section-title {
            font-size: 22px;
        }

        .filter-tab {
            padding: 7px 16px;
            font-size: 13px;
        }

        .news-card .card-img-wrap {
            height: 180px;
        }

        .news-card h3 {
            font-size: 16px;
        }

        .stat-num {
            font-size: 34px;
        }

        .cta-box h2 {
            font-size: 24px;
        }

        .cta-form .form-control {
            padding: 11px 18px;
        }

        .mobile-tab-bar {
            display: flex;
        }

        body {
            padding-bottom: 62px;
        }
    }

    @media (min-width: 769px) {
        .mobile-tab-bar {
            display: none;
        }
    }

/* roulang page: article */
:root {
            --primary: #0ba360;
            --primary-600: #059a5b;
            --primary-700: #048851;
            --primary-soft: #d9f5e7;
            --accent: #f59e0b;
            --dark-green: #0e1f18;
            --dark-green-2: #142a20;
            --bg: #f5faf8;
            --light-bg: #eef7f3;
            --white: #ffffff;
            --text-main: #1f2d27;
            --text-muted: #6b7d74;
            --border: #ddece5;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 4px 14px rgba(10, 50, 30, .06);
            --shadow-md: 0 8px 28px rgba(10, 50, 30, .08);
            --shadow-lg: 0 16px 48px rgba(10, 50, 30, .12);
            --transition-base: all .28s cubic-bezier(.4, 0, .2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg);
            color: var(--text-main);
            line-height: 1.65;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            padding-bottom: 64px;
        }
        @media (min-width: 992px) {
            body {
                padding-bottom: 0;
            }
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--primary);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
        }

        /* ===== Buttons ===== */
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            border-radius: 30px;
            padding: 10px 24px;
            font-weight: 600;
            transition: var(--transition-base);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-700);
            border-color: var(--primary-700);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(11, 163, 96, .25);
        }
        .btn-outline-primary {
            border: 1px solid var(--primary);
            color: var(--primary);
            border-radius: 30px;
            font-weight: 600;
            padding: 10px 24px;
            transition: var(--transition-base);
        }
        .btn-outline-primary:hover,
        .btn-outline-primary:focus {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(11, 163, 96, .2);
        }
        .btn-light {
            background: #fff;
            border-color: #fff;
            color: var(--primary-700);
        }
        .btn-light:hover {
            background: var(--primary-soft);
            border-color: var(--primary-soft);
            color: var(--primary-700);
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, .18);
        }
        .btn-outline-light {
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: #fff;
            color: var(--primary-700);
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, .14);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(221, 236, 229, .8);
            box-shadow: 0 4px 20px rgba(10, 50, 30, .04);
        }
        .site-header .navbar {
            padding: 14px 0;
            min-height: 72px;
        }
        .brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--dark-green);
            letter-spacing: .5px;
        }
        .brand-custom:hover {
            color: var(--primary);
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #12b76a, #078b52);
            color: #fff;
            border-radius: 12px;
            font-size: 18px;
            box-shadow: 0 6px 16px rgba(11, 163, 96, .28);
        }
        .site-header .navbar-nav .nav-link {
            font-weight: 600;
            color: var(--text-main);
            padding: 10px 16px;
            border-radius: 10px;
            position: relative;
            transition: var(--transition-base);
        }
        .site-header .navbar-nav .nav-link:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .site-header .navbar-nav .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .header-cta {
            border-radius: 10px;
            padding: 8px 22px;
            font-weight: 600;
            background: var(--primary);
            border-color: var(--primary);
        }
        .header-cta:hover {
            background: var(--primary-700);
            border-color: var(--primary-700);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(11, 163, 96, .25);
        }
        .navbar-toggler {
            border: none;
            box-shadow: none;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231f2d27' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            background-position: center;
            background-size: cover;
            padding: 90px 0;
            color: #fff;
        }
        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 30, 22, .88), rgba(11, 80, 55, .72));
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, .82);
            margin-bottom: 20px;
        }
        .article-breadcrumb a {
            color: rgba(255, 255, 255, .85);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-breadcrumb a:hover {
            color: #fff;
        }
        .article-hero h1 {
            font-size: clamp(28px, 4vw, 46px);
            font-weight: 800;
            line-height: 1.25;
            max-width: 900px;
            margin-bottom: 18px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 14px;
            color: rgba(255, 255, 255, .88);
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .14);
            padding: 6px 14px;
            border-radius: 30px;
            backdrop-filter: blur(4px);
        }

        /* ===== Post Content ===== */
        .post-section {
            padding: 60px 0;
        }
        .card {
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: var(--white);
            box-shadow: var(--shadow-sm);
        }
        .post-main.card {
            padding: 34px;
            border: 0;
        }
        .post-body {
            font-size: 16px;
            line-height: 1.85;
            color: #2a3732;
        }
        .post-body h2,
        .post-body h3,
        .post-body h4 {
            margin: 30px 0 14px;
            font-weight: 700;
            color: var(--dark-green);
        }
        .post-body h2 {
            font-size: 24px;
        }
        .post-body h3 {
            font-size: 20px;
        }
        .post-body p {
            margin-bottom: 18px;
        }
        .post-body img {
            border-radius: var(--radius-md);
            margin: 22px 0;
            box-shadow: var(--shadow-sm);
        }
        .post-body ul,
        .post-body ol {
            margin: 0 0 18px 20px;
            padding-left: 0;
        }
        .post-body li {
            margin-bottom: 8px;
        }
        .post-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-soft);
            padding: 16px 22px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 22px 0;
            color: var(--text-main);
        }
        .post-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .post-body a:hover {
            color: var(--primary-700);
        }
        .post-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            padding-top: 24px;
            margin-top: 30px;
            border-top: 1px solid var(--border);
        }
        .post-tag {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary-700);
            padding: 5px 14px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
        }
        .post-tag:hover {
            background: var(--primary);
            color: #fff;
        }
        .post-share {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 24px;
            padding: 18px 24px;
            background: var(--light-bg);
            border-radius: var(--radius-md);
        }
        .post-share .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            background: #fff;
            border-radius: 50%;
            width: 38px;
            height: 38px;
            color: var(--text-muted);
            cursor: pointer;
            transition: var(--transition-base);
        }
        .post-share .share-btn:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        /* ===== Sidebar ===== */
        .post-sidebar {
            position: sticky;
            top: 96px;
        }
        .sidebar-card.card {
            padding: 26px;
            margin-bottom: 22px;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: var(--white);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--dark-green);
            position: relative;
            padding-left: 14px;
        }
        .sidebar-card h3::before {
            content: "";
            position: absolute;
            left: 0;
            top: 4px;
            width: 4px;
            height: 18px;
            background: var(--primary);
            border-radius: 3px;
        }
        .sidebar-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .sidebar-list li {
            padding: 9px 0;
            border-bottom: 1px dashed var(--border);
        }
        .sidebar-list li:last-child {
            border-bottom: 0;
        }
        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            line-height: 1.5;
            color: var(--text-main);
            font-weight: 500;
        }
        .sidebar-list a:hover {
            color: var(--primary);
        }
        .sidebar-list .dot {
            flex: 0 0 auto;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--primary);
            margin-top: 7px;
        }
        .sidebar-cats {
            display: grid;
            gap: 12px;
        }
        .cat-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 18px;
            background: var(--light-bg);
            border-radius: var(--radius-md);
            color: var(--text-main);
            font-weight: 600;
            transition: var(--transition-base);
        }
        .cat-link i {
            color: var(--primary);
            font-size: 18px;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            border-radius: 10px;
            box-shadow: var(--shadow-sm);
        }
        .cat-link:hover {
            background: var(--primary-soft);
            color: var(--primary-700);
            transform: translateX(4px);
        }
        .sidebar-cta.card {
            background: linear-gradient(135deg, #0b8f58, #146d44);
            color: #fff;
            border: 0;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-md);
        }
        .sidebar-cta h4 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .sidebar-cta p {
            color: rgba(255, 255, 255, .86);
            font-size: 14px;
            margin-bottom: 18px;
        }
        .sidebar-cta .btn {
            border-radius: 30px;
            background: #fff;
            color: var(--primary-700);
            border-color: #fff;
            font-weight: 600;
        }
        .sidebar-cta .btn:hover {
            background: var(--primary-soft);
            border-color: var(--primary-soft);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, .16);
        }

        /* ===== Not Found ===== */
        .not-found.card {
            text-align: center;
            padding: 60px 30px;
            border-radius: var(--radius-lg);
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .not-found i {
            font-size: 48px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .not-found h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 60px 0;
            background: var(--light-bg);
            border-top: 1px solid var(--border);
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 32px;
            gap: 20px;
        }
        .section-tag {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary-700);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 5px 14px;
            border-radius: 30px;
            margin-bottom: 8px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--dark-green);
        }
        .related-card {
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: #fff;
            overflow: hidden;
            transition: var(--transition-base);
            height: 100%;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .related-cover {
            display: block;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .related-card:hover .related-cover img {
            transform: scale(1.06);
        }
        .related-card .card-body {
            padding: 24px;
        }
        .badge-soft {
            background: var(--primary-soft);
            color: var(--primary-700);
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 13px;
        }
        .related-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.45;
            margin: 8px 0 10px;
        }
        .related-title a {
            color: var(--text-main);
        }
        .related-title a:hover {
            color: var(--primary);
        }
        .related-excerpt {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.65;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition-base);
        }
        .btn-link:hover {
            color: var(--primary-700);
            gap: 12px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 70px 0;
            background: var(--white);
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 26px;
            height: 100%;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .faq-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark-green);
            margin-bottom: 10px;
        }
        .faq-item p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 70px 0;
            position: relative;
            background: linear-gradient(135deg, rgba(11, 92, 55, .95), rgba(12, 60, 40, .92)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        }
        .cta-inner {
            text-align: center;
            color: #fff;
            padding: 40px 20px;
        }
        .cta-inner h2 {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-inner p {
            font-size: 17px;
            color: rgba(255, 255, 255, .88);
            max-width: 560px;
            margin: 0 auto 30px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }
        .cta-actions .btn {
            border-radius: 40px;
            padding: 12px 28px;
            font-weight: 600;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-green);
            color: rgba(255, 255, 255, .78);
            padding-top: 58px;
        }
        .footer-top {
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .brand-icon {
            background: linear-gradient(135deg, #12b76a, #078b52);
        }
        .site-footer p {
            color: rgba(255, 255, 255, .66);
            font-size: 14px;
            line-height: 1.7;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 18px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .08);
            color: #fff;
            font-size: 16px;
            transition: var(--transition-base);
        }
        .footer-social a:hover {
            background: var(--primary);
            transform: translateY(-3px);
        }
        .site-footer h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul a {
            color: rgba(255, 255, 255, .66);
            font-size: 14px;
            transition: var(--transition-base);
        }
        .site-footer ul a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .5);
        }
        .footer-bottom p {
            margin: 4px 0;
        }

        /* ===== Mobile Tabbar ===== */
        .mobile-tabbar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1100;
            display: flex;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(16px);
            border-top: 1px solid var(--border);
            box-shadow: 0 -6px 20px rgba(10, 50, 30, .06);
            padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
        }
        .mobile-tabbar .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            color: var(--text-muted);
            font-size: 11px;
            font-weight: 600;
            padding: 6px 4px;
            border-radius: 12px;
            transition: var(--transition-base);
        }
        .mobile-tabbar .tab-item i {
            font-size: 18px;
        }
        .mobile-tabbar .tab-item.active,
        .mobile-tabbar .tab-item:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        /* ===== Responsive ===== */
        @media (min-width: 992px) {
            .mobile-tabbar {
                display: none;
            }
        }
        @media (max-width: 991.98px) {
            .site-header .navbar-nav {
                padding-top: 12px;
            }
            .site-header .navbar-nav .nav-link {
                padding: 12px 16px;
            }
        }
        @media (max-width: 768px) {
            .article-hero {
                padding: 56px 0;
            }
            .post-main.card {
                padding: 22px 18px;
            }
            .post-section {
                padding: 36px 0;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .post-sidebar {
                position: static;
            }
            .footer-top {
                text-align: left;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .brand-custom {
                font-size: 17px;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }
            .hero-meta {
                gap: 8px;
            }
            .hero-meta span {
                padding: 5px 10px;
                font-size: 13px;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .post-share {
                flex-wrap: wrap;
            }
        }