/* roulang page: index */
:root {
    --primary: #F59E0B;
    --primary-dark: #D97706;
    --primary-light: #FEF3C7;
    --dark: #0F172A;
    --dark-2: #1E293B;
    --dark-3: #334155;
    --text: #334155;
    --text-light: #64748B;
    --extra-light: #94A3B8;
    --bg: #F8FAFC;
    --bg-white: #FFFFFF;
    --border: #E2E8F0;
    --success: #10B981;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 4px 24px rgba(15, 23, 42, 0.07);
    --shadow-hover: 0 12px 36px rgba(15, 23, 42, 0.13);
    --transition: all 0.3s ease;
    --nav-h: 52px;
    --header-brand-h: 64px;
    --content-width: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: var(--content-width); margin: 0 auto; padding: 0 24px; width: 100%; }
::selection { background: var(--primary); color: #fff; }
:focus-visible { outline: 3px solid rgba(245, 158, 11, 0.45); outline-offset: 2px; border-radius: 4px; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    padding: 14px 32px; border-radius: 50px; font-weight: 600; font-size: 15px;
    border: 2px solid transparent; cursor: pointer; transition: var(--transition);
    white-space: nowrap; line-height: 1.2;
}
.btn i { font-size: 15px; }
.btn-primary {
    background: var(--primary); color: var(--dark);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 30px rgba(217, 119, 6, 0.35); }
.btn-primary:active { transform: translateY(0); }
.btn-outline {
    background: transparent; color: #fff; border-color: rgba(255,255,255,0.6);
}
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn-dark {
    background: var(--dark); color: #fff; box-shadow: 0 6px 20px rgba(15, 23, 42, 0.2);
}
.btn-dark:hover { background: var(--dark-2); transform: translateY(-2px); }

/* ===== Header ===== */
.site-header {
    position: sticky; top: 0; z-index: 1000;
    background: var(--dark); color: #fff;
    box-shadow: 0 4px 24px rgba(0,0,0,0.18);
}
.header-brand-row {
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.brand-wrap {
    display: flex; align-items: center; justify-content: space-between;
    height: var(--header-brand-h); gap: 20px;
}
.brand-logo {
    font-size: 24px; font-weight: 800; letter-spacing: 0.5px;
    background: linear-gradient(135deg, #F59E0B, #FBBF24);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
    display: inline-flex; align-items: center; gap: 8px; position: relative;
}
.brand-logo i { font-size: 22px; -webkit-text-fill-color: var(--primary); }
.brand-logo .logo-dot {
    width: 8px; height: 8px; background: var(--primary); border-radius: 50%;
    display: inline-block; margin-left: 4px; box-shadow: 0 0 12px rgba(245,158,11,0.7);
}
.header-search {
    display: flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.1); border-radius: 40px;
    padding: 8px 18px; width: 280px; transition: var(--transition);
    border: 1px solid transparent;
}
.header-search:hover, .header-search:focus-within { background: rgba(255,255,255,0.16); border-color: rgba(245,158,11,0.4); }
.header-search i { color: var(--primary); font-size: 14px; }
.header-search input {
    background: transparent; border: none; outline: none; color: #fff;
    width: 100%; font-size: 14px;
}
.header-search input::placeholder { color: rgba(255,255,255,0.5); }
.header-nav-row {
    background: rgba(0,0,0,0.2);
}
.channel-nav {
    display: flex; align-items: center; gap: 8px;
    height: var(--nav-h); overflow-x: auto; scrollbar-width: none;
}
.channel-nav::-webkit-scrollbar { display: none; }
.channel-link {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 20px; font-size: 15px; font-weight: 500;
    color: rgba(255,255,255,0.72); border-radius: 40px;
    white-space: nowrap; transition: var(--transition); border: 1px solid transparent;
}
.channel-link i { font-size: 13px; color: var(--primary); }
.channel-link:hover { color: #fff; background: rgba(255,255,255,0.08); }
.channel-link.active {
    background: linear-gradient(135deg, rgba(245,158,11,0.2), rgba(245,158,11,0.08));
    color: var(--primary); border-color: rgba(245,158,11,0.3);
}

/* ===== Hero ===== */
.hero-section {
    position: relative; background-size: cover; background-position: center;
    padding: 120px 0; color: #fff; overflow: hidden;
}
.hero-section::before {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(120deg, rgba(15,23,42,0.92) 0%, rgba(15,23,42,0.72) 45%, rgba(30,41,59,0.45) 100%);
}
.hero-section .container { position: relative; z-index: 2; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(245,158,11,0.15); border: 1px solid rgba(245,158,11,0.35);
    color: var(--primary); padding: 8px 18px; border-radius: 40px;
    font-size: 14px; font-weight: 600; margin-bottom: 24px;
}
.hero-badge i { font-size: 13px; }
.hero-title {
    font-size: clamp(36px, 6vw, 64px); font-weight: 900; line-height: 1.15;
    letter-spacing: 1px; margin-bottom: 20px;
}
.hero-title span {
    background: linear-gradient(135deg, #F59E0B, #FBBF24);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-subtitle {
    font-size: 18px; color: rgba(255,255,255,0.8); max-width: 620px;
    margin-bottom: 40px; line-height: 1.8;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.hero-meta {
    display: flex; flex-wrap: wrap; gap: 30px; margin-top: 50px;
    padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-meta-item { display: flex; align-items: center; gap: 12px; }
.hero-meta-item i { font-size: 20px; color: var(--primary); }
.hero-meta-item .text { font-size: 14px; color: rgba(255,255,255,0.7); }
.hero-meta-item .text strong { display: block; font-size: 18px; color: #fff; }

/* ===== Section Common ===== */
.section { padding: 80px 0; }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 50px; }
.section-tag {
    display: inline-block; background: var(--primary-light); color: var(--primary-dark);
    padding: 6px 16px; border-radius: 40px; font-size: 13px; font-weight: 700;
    letter-spacing: 0.5px; margin-bottom: 14px;
}
.section-title { font-size: clamp(28px, 4vw, 38px); font-weight: 800; color: var(--dark); line-height: 1.3; margin-bottom: 12px; }
.section-subtitle { font-size: 16px; color: var(--text-light); line-height: 1.8; }

/* ===== Feature ===== */
.feature-section { padding: 80px 0; background: var(--bg-white); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card {
    background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 36px 28px; transition: var(--transition); position: relative; overflow: hidden;
}
.feature-card::after {
    content: ""; position: absolute; top: 0; left: 0; width: 4px; height: 0;
    background: var(--primary); transition: height 0.4s ease;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: transparent; }
.feature-card:hover::after { height: 100%; }
.feature-icon {
    width: 64px; height: 64px; border-radius: 16px;
    background: linear-gradient(135deg, var(--primary-light), #FDE68A);
    display: flex; align-items: center; justify-content: center; margin-bottom: 22px;
    font-size: 24px; color: var(--primary-dark);
}
.feature-card h3 { font-size: 20px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.feature-card p { font-size: 15px; color: var(--text-light); line-height: 1.75; }

/* ===== Category ===== */
.category-section { padding: 80px 0; background: var(--bg); }
.category-card {
    position: relative; border-radius: 24px; overflow: hidden; min-height: 340px;
    background-size: cover; background-position: center; display: flex; align-items: flex-end;
    transition: var(--transition); box-shadow: var(--shadow);
}
.category-card::before {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(15,23,42,0.9) 0%, rgba(15,23,42,0.2) 70%, transparent 100%);
}
.category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.category-card .cat-content { position: relative; z-index: 2; padding: 36px; width: 100%; }
.category-card .cat-label {
    display: inline-block; background: var(--primary); color: var(--dark);
    font-size: 13px; font-weight: 700; padding: 6px 16px; border-radius: 40px;
    margin-bottom: 14px;
}
.category-card h3 { font-size: 28px; font-weight: 800; color: #fff; margin-bottom: 8px; }
.category-card p { color: rgba(255,255,255,0.8); font-size: 15px; margin-bottom: 16px; max-width: 420px; }
.category-card .cat-link {
    display: inline-flex; align-items: center; gap: 8px; color: var(--primary);
    font-weight: 600; font-size: 15px;
}
.category-card .cat-link:hover { gap: 14px; color: #FBBF24; }

/* ===== Stats ===== */
.stats-section {
    background: linear-gradient(135deg, var(--dark) 0%, #0B1120 100%);
    padding: 70px 0; color: #fff; position: relative; overflow: hidden;
}
.stats-section::before {
    content: ""; position: absolute; top: -100px; right: -100px; width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(245,158,11,0.2), transparent 70%);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; position: relative; z-index: 2; }
.stat-item { text-align: center; padding: 20px; }
.stat-item .stat-num {
    font-size: 48px; font-weight: 900; color: var(--primary);
    line-height: 1.2; margin-bottom: 8px;
}
.stat-item .stat-label { font-size: 15px; color: rgba(255,255,255,0.7); }
.stat-item .stat-icon { font-size: 26px; color: rgba(245,158,11,0.5); margin-bottom: 14px; display: block; }

/* ===== Posts ===== */
.posts-section { padding: 80px 0; background: var(--bg-white); }
.posts-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.post-card {
    display: flex; flex-direction: column; background: var(--bg-white);
    border: 1px solid var(--border); border-radius: var(--radius); padding: 30px;
    transition: var(--transition); position: relative;
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: transparent; }
.post-card .post-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.post-cat {
    display: inline-block; background: var(--dark); color: #fff;
    padding: 4px 14px; border-radius: 40px; font-size: 12px; font-weight: 600;
}
.post-time { font-size: 13px; color: var(--extra-light); display: flex; align-items: center; gap: 6px; }
.post-time i { font-size: 12px; }
.post-card h3 { font-size: 19px; font-weight: 700; color: var(--dark); line-height: 1.5; margin-bottom: 10px; }
.post-card h3 a:hover { color: var(--primary-dark); }
.post-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; flex: 1; }
.post-card .post-link {
    display: inline-flex; align-items: center; gap: 8px; color: var(--primary-dark);
    font-weight: 600; font-size: 14px; margin-top: auto;
}
.post-card .post-link:hover { gap: 14px; color: var(--primary); }
.posts-empty {
    text-align: center; padding: 60px 20px; color: var(--text-light);
    background: var(--bg); border-radius: var(--radius); font-size: 15px;
}

/* ===== Content Cards ===== */
.content-section { padding: 80px 0; background: var(--bg); }
.content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.content-card {
    background: var(--bg-white); border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--border); transition: var(--transition);
}
.content-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.content-card .card-img { position: relative; overflow: hidden; }
.content-card .card-img img { width: 100%; height: 210px; object-fit: cover; transition: transform 0.5s ease; }
.content-card:hover .card-img img { transform: scale(1.06); }
.content-card .card-img::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(15,23,42,0.4), transparent 70%);
}
.content-card .card-body { padding: 24px; }
.content-card .card-body .card-tag {
    display: inline-block; background: var(--primary-light); color: var(--primary-dark);
    font-size: 12px; font-weight: 700; padding: 4px 14px; border-radius: 40px; margin-bottom: 14px;
}
.content-card .card-body h3 { font-size: 18px; font-weight: 700; color: var(--dark); line-height: 1.5; margin-bottom: 10px; }
.content-card .card-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section { padding: 80px 0; background: var(--bg-white); }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
    border: 1px solid var(--border); border-radius: var(--radius);
    margin-bottom: 14px; overflow: hidden; transition: var(--transition);
    background: var(--bg-white);
}
.faq-item:hover { border-color: rgba(245,158,11,0.4); }
.faq-item.active { border-color: rgba(245,158,11,0.5); box-shadow: var(--shadow); }
.faq-q {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 22px 24px; cursor: pointer; font-size: 16px; font-weight: 600;
    color: var(--dark); user-select: none;
}
.faq-q .faq-icon {
    width: 30px; height: 30px; border-radius: 50%; background: var(--primary-light);
    display: flex; align-items: center; justify-content: center; color: var(--primary-dark);
    font-size: 14px; flex-shrink: 0; transition: var(--transition);
}
.faq-item.active .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-a .faq-answer { padding: 0 24px 24px; color: var(--text-light); font-size: 15px; line-height: 1.8; }

/* ===== CTA ===== */
.cta-section {
    padding: 90px 0; position: relative; background-size: cover; background-position: center;
    color: #fff; text-align: center;
}
.cta-section::before {
    content: ""; position: absolute; inset: 0;
    background: rgba(15, 23, 42, 0.88);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; margin-bottom: 14px; }
.cta-section p { font-size: 17px; color: rgba(255,255,255,0.8); max-width: 560px; margin: 0 auto 32px; }
.cta-section .btn { margin: 0 8px; }

/* ===== Footer ===== */
.site-footer {
    background: var(--dark); color: rgba(255,255,255,0.7);
    padding: 60px 0 0; font-size: 14px;
}
.footer-main {
    display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px;
    padding-bottom: 40px;
}
.footer-brand .brand-logo { font-size: 26px; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 320px; }
.footer-col h4 {
    color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px;
    position: relative; padding-bottom: 10px;
}
.footer-col h4::after {
    content: ""; position: absolute; bottom: 0; left: 0; width: 32px; height: 3px;
    background: var(--primary); border-radius: 2px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.6); transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
.footer-col ul li a i { font-size: 12px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.45); }
.footer-bottom .footer-links { display: flex; gap: 20px; }
.footer-bottom .footer-links a { color: rgba(255,255,255,0.45); }
.footer-bottom .footer-links a:hover { color: var(--primary); }

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .content-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-main { grid-template-columns: 1fr 1fr; }
}
@media screen and (max-width: 768px) {
    .section { padding: 60px 0; }
    .hero-section { padding: 90px 0; }
    .hero-title { font-size: 36px; }
    .hero-actions { flex-direction: column; align-items: flex-start; }
    .hero-actions .btn { width: 100%; }
    .header-search { width: 200px; }
    .footer-main { grid-template-columns: 1fr; gap: 32px; }
    .brand-wrap { flex-direction: column; height: auto; padding: 14px 0; gap: 10px; }
    .header-brand-row .container { padding: 0 16px; }
}
@media screen and (max-width: 520px) {
    .container { padding: 0 16px; }
    .feature-grid { grid-template-columns: 1fr; }
    .content-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
    .stat-item .stat-num { font-size: 34px; }
    .posts-grid { grid-template-columns: 1fr; }
    .category-card { min-height: 280px; }
    .category-card .cat-content { padding: 24px; }
    .category-card h3 { font-size: 22px; }
    .channel-nav { gap: 4px; }
    .channel-link { padding: 8px 14px; font-size: 14px; }
    .brand-logo { font-size: 20px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .hero-meta { flex-direction: column; gap: 16px; }
}

/* roulang page: category1 */
:root {
    --color-primary: #081120;
    --color-primary-light: #132742;
    --color-accent: #00e5ff;
    --color-accent-warm: #ffb020;
    --color-bg: #f0f4f8;
    --color-surface: #ffffff;
    --color-text: #172436;
    --color-text-muted: #5d6e82;
    --color-border: #dfe6ee;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(8, 17, 32, 0.06);
    --shadow-md: 0 6px 24px rgba(8, 17, 32, 0.08);
    --shadow-lg: 0 16px 48px rgba(8, 17, 32, 0.12);
    --space-sm: 16px;
    --space-md: 32px;
    --space-lg: 64px;
    --space-xl: 96px;
    --font-sans: -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-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color 0.25s ease; }
a:hover, a:focus { outline: none; }
img { max-width: 100%; height: auto; display: block; }
input, button, textarea { font-family: inherit; font-size: inherit; }
ul { list-style: none; }

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

.section {
    padding: 72px 0;
}

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

.section-head .section-tag,
.safety-content .section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 229, 255, 0.1);
    color: #0096b8;
    border: 1px solid rgba(0, 229, 255, 0.25);
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    margin-bottom: 16px;
}

.section-head h2 {
    font-size: 2.125rem;
    font-weight: 800;
    line-height: 1.3;
    color: var(--color-primary);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.section-head p {
    font-size: 1.0625rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.section-head.light .section-tag {
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-accent);
    border-color: rgba(255, 255, 255, 0.2);
}

.section-head.light h2 { color: #ffffff; }
.section-head.light p { color: rgba(255, 255, 255, 0.7); }

/* Header */
.site-header {
    background: var(--color-surface);
    box-shadow: 0 1px 0 rgba(8, 17, 32, 0.06);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-brand-row {
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
}

.brand-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.01em;
}

.brand-logo i {
    color: var(--color-accent);
    font-size: 1.25rem;
    background: rgba(0, 229, 255, 0.12);
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.logo-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent-warm);
    margin-left: 2px;
    animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.header-search {
    display: flex;
    align-items: center;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 8px 18px;
    width: 280px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.header-search:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
}

.header-search i {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-right: 10px;
    flex-shrink: 0;
}

.header-search input {
    border: none;
    background: transparent;
    width: 100%;
    font-size: 0.875rem;
    color: var(--color-text);
    outline: none;
}

.header-search input::placeholder { color: #9aabbc; }

.header-nav-row {
    background: var(--color-primary);
}

.channel-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0;
    min-height: 54px;
}

.channel-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 8px;
    transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease;
}

.channel-link i { font-size: 0.9375rem; opacity: 0.8; }

.channel-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08);
}

.channel-link.active {
    color: var(--color-primary);
    background: var(--color-accent);
    box-shadow: 0 2px 12px rgba(0, 229, 255, 0.35);
}

.channel-link.active i { opacity: 1; }

/* Buttons */
.btn-primary,
.btn-outline,
.btn-outline-dark {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 0.9375rem;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.02em;
}

.btn-primary {
    background: linear-gradient(135deg, #00e5ff, #0096b8);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 229, 255, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 229, 255, 0.45);
    color: #ffffff;
}

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

.btn-outline:hover {
    border-color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

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

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

.btn-lg {
    padding: 16px 40px;
    font-size: 1rem;
}

.btn-light {
    border-color: rgba(255, 255, 255, 0.5);
    color: #ffffff;
}

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

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(0, 229, 255, 0.15);
    border: 1px solid rgba(0, 229, 255, 0.3);
    color: #00a8cc;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    backdrop-filter: blur(4px);
}

.badge i { font-size: 0.75rem; }

/* Page Banner */
.page-banner {
    position: relative;
    background: linear-gradient(135deg, rgba(8, 17, 32, 0.94), rgba(19, 39, 66, 0.85)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding: 108px 0 96px;
    color: #ffffff;
    overflow: hidden;
}

.page-banner::after {
    content: '';
    position: absolute;
    top: -60%;
    right: -15%;
    width: 480px;
    height: 480px;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.18), transparent 65%);
    pointer-events: none;
}

.banner-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
}

.banner-content h1 {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.25;
    margin: 20px 0 16px;
    letter-spacing: -0.02em;
}

.banner-content p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.8;
    max-width: 560px;
    margin-bottom: 28px;
}

.banner-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 28px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.55);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.2s ease;
}

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

/* Stats Section */
.stats-section {
    padding: 56px 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.14), rgba(0, 229, 255, 0.06));
    color: #0096b8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin: 0 auto 16px;
}

.stat-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 6px;
    font-weight: 500;
}

/* Access Cards */
.access-section {
    background: var(--color-bg);
}

.access-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.access-img {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: var(--color-primary);
}

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

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

.access-img .badge {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(8, 17, 32, 0.7);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--color-accent);
    backdrop-filter: blur(6px);
}

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

.access-body h3 {
    font-size: 1.1875rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.access-body p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
    flex: 1;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #0096b8;
    font-weight: 600;
    font-size: 0.9063rem;
    transition: gap 0.2s ease, color 0.2s ease;
}

.card-link:hover { color: var(--color-primary); gap: 10px; }

/* Steps Section */
.steps-section {
    position: relative;
    background: linear-gradient(135deg, rgba(8, 17, 32, 0.96), rgba(19, 39, 66, 0.92)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    overflow: hidden;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 2;
}

.step-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 32px 24px;
    position: relative;
    backdrop-filter: blur(8px);
    transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.step-item:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 229, 255, 0.3);
}

.step-num {
    position: absolute;
    top: 18px;
    right: 20px;
    font-size: 2.25rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.1);
    line-height: 1;
    letter-spacing: -0.03em;
}

.step-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.25), rgba(0, 229, 255, 0.08));
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 18px;
    border: 1px solid rgba(0, 229, 255, 0.2);
}

.step-item h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 8px;
}

.step-item p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.65;
}

/* Safety Section */
.safety-section {
    background: var(--color-surface);
}

.safety-img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    height: auto;
    object-fit: cover;
}

.safety-content h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 12px;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

.safety-content > p {
    font-size: 1.0625rem;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.safety-list {
    margin: 0 0 32px;
    display: grid;
    gap: 14px;
}

.safety-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    background: var(--color-bg);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    font-size: 0.9375rem;
    color: var(--color-text);
    transition: border-color 0.25s ease, transform 0.2s ease;
}

.safety-list li:hover {
    border-color: rgba(0, 229, 255, 0.4);
    transform: translateX(4px);
}

.safety-list li i {
    color: var(--color-accent);
    font-size: 1.125rem;
    margin-top: 2px;
    flex-shrink: 0;
}

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

.container-narrow {
    max-width: 860px;
}

.faq-list {
    background: transparent;
    border: none;
}

.faq-list .accordion-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.faq-list .accordion-item:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(0, 229, 255, 0.3);
}

.faq-list .accordion-item:first-child > :first-child {
    border-radius: var(--radius) var(--radius) 0 0;
}

.faq-list .accordion-title {
    padding: 22px 52px 22px 24px;
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-text);
    border: none;
    background: transparent;
    line-height: 1.5;
    transition: background 0.25s ease, color 0.25s ease;
}

.faq-list .accordion-title:hover,
.faq-list .accordion-title:focus {
    background: rgba(0, 229, 255, 0.04);
    color: var(--color-primary);
}

.faq-list .accordion-title::before {
    content: '\f067';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    color: #0096b8;
    font-size: 0.9375rem;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(0, 229, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease, background 0.3s ease;
}

.faq-list .accordion-item.is-active .accordion-title::before {
    content: '\f068';
    background: rgba(0, 229, 255, 0.2);
}

.faq-list .accordion-content {
    border: none;
    color: var(--color-text-muted);
    line-height: 1.75;
    padding: 0 24px 24px;
    background: transparent;
    font-size: 0.9375rem;
}

/* CTA Section */
.cta-section {
    background: var(--color-surface);
}

.cta-box {
    background: linear-gradient(135deg, #132742, #081120);
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -80%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.2), transparent 65%);
    pointer-events: none;
}

.cta-box::after {
    content: '';
    position: absolute;
    bottom: -60%;
    left: -5%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 176, 32, 0.12), transparent 60%);
    pointer-events: none;
}

.cta-icon {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.25), rgba(0, 229, 255, 0.1));
    border: 1px solid rgba(0, 229, 255, 0.3);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin: 0 auto 24px;
    position: relative;
    z-index: 2;
}

.cta-box h2 {
    font-size: 2rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 10px;
    position: relative;
    z-index: 2;
    letter-spacing: -0.02em;
}

.cta-box p {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 28px;
    position: relative;
    z-index: 2;
}

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

/* Footer */
.site-footer {
    background: var(--color-primary);
    color: rgba(255, 255, 255, 0.65);
    padding: 64px 0 0;
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .brand-logo {
    color: #ffffff;
    font-size: 1.125rem;
    margin-bottom: 16px;
}

.footer-brand .brand-logo i {
    background: rgba(0, 229, 255, 0.15);
    color: var(--color-accent);
}

.footer-brand p {
    font-size: 0.9063rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.5);
    max-width: 340px;
}

.footer-col h4 {
    font-size: 0.9375rem;
    color: #ffffff;
    font-weight: 700;
    margin-bottom: 18px;
    letter-spacing: 0.03em;
}

.footer-col ul {
    display: grid;
    gap: 12px;
}

.footer-col ul a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.55);
    transition: color 0.25s ease, padding-left 0.25s ease;
}

.footer-col ul a i {
    font-size: 0.625rem;
    color: var(--color-accent);
    opacity: 0.6;
    transition: opacity 0.25s ease;
}

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

.footer-col ul a:hover i { opacity: 1; }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 20px 0;
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.4);
}

.footer-links {
    display: flex;
    gap: 18px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.45);
    transition: color 0.25s ease;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .section { padding: 56px 0; }
    .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .footer-main { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 768px) {
    .section { padding: 48px 0; }
    .section-head { margin-bottom: 36px; }
    .section-head h2 { font-size: 1.75rem; }
    .header-search { width: 200px; }
    .page-banner { padding: 76px 0 64px; }
    .page-banner h1 { font-size: 1.875rem; }
    .banner-content p { font-size: 1rem; }
    .banner-actions { flex-direction: column; align-items: flex-start; }
    .channel-nav { padding: 10px 0; overflow-x: auto; -webkit-overflow-scrolling: touch; gap: 8px; }
    .channel-link { white-space: nowrap; padding: 8px 14px; font-size: 0.875rem; }
    .footer-main { grid-template-columns: 1fr; gap: 32px; }
    .cta-box { padding: 40px 28px; }
    .cta-box h2 { font-size: 1.625rem; }
    .safety-content { margin-top: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
    .header-brand-row { padding: 12px 0; }
    .brand-logo { font-size: 1rem; }
    .brand-logo i { width: 30px; height: 30px; font-size: 1rem; }
    .header-search { width: 100%; margin-top: 10px; }
    .brand-wrap { flex-wrap: wrap; }
    .page-banner { padding: 60px 0 52px; }
    .page-banner h1 { font-size: 1.625rem; }
    .steps-grid { grid-template-columns: 1fr; }
    .stat-card { padding: 24px 16px; }
    .stat-num { font-size: 1.625rem; }
    .cta-actions { flex-direction: column; align-items: stretch; }
    .cta-actions .btn-primary,
    .cta-actions .btn-outline { justify-content: center; }
    .footer-bottom { flex-direction: column; gap: 8px; }
    .footer-links { flex-wrap: wrap; justify-content: center; }
}

/* roulang page: article */
:root {
            --brand: #2563eb;
            --brand-dark: #1e40af;
            --brand-light: #dbeafe;
            --accent: #f59e0b;
            --bg: #f4f6fb;
            --surface: #ffffff;
            --text: #0f172a;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, .10);
            --shadow-lg: 0 20px 50px rgba(15, 23, 42, .16);
            --section-space: 82px;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-family);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            border: 0;
            display: inline-block;
        }
        a {
            text-decoration: none;
            color: var(--brand);
            transition: color .2s ease;
        }
        a:hover {
            color: var(--brand-dark);
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 .5em;
            line-height: 1.35;
            color: var(--text);
        }
        p {
            margin: 0 0 1em;
        }
        ul,
        ol {
            margin: 0 0 1em;
            padding-left: 1.2em;
        }
        .container,
        .grid-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--surface);
            box-shadow: var(--shadow-sm);
        }
        .header-brand-row {
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .brand-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .brand-logo {
            font-size: 24px;
            font-weight: 800;
            letter-spacing: .4px;
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            line-height: 1.2;
        }
        .brand-logo i {
            font-size: 22px;
            color: var(--accent);
        }
        .brand-logo .logo-dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
            margin-left: 4px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 18px;
            width: 320px;
            gap: 8px;
            transition: border-color .2s, box-shadow .2s;
        }
        .header-search i {
            color: var(--text-weak);
            font-size: 14px;
        }
        .header-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            width: 100%;
            color: var(--text);
        }
        .header-search:focus-within {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
        }
        .header-nav-row {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .channel-nav {
            display: flex;
            gap: 4px;
            padding: 6px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .channel-nav::-webkit-scrollbar {
            display: none;
        }
        .channel-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 999px;
            color: var(--text);
            font-size: 14px;
            font-weight: 500;
            text-decoration: none;
            transition: background .2s, color .2s, transform .2s;
            white-space: nowrap;
        }
        .channel-link i {
            color: var(--text-weak);
            transition: color .2s;
        }
        .channel-link:hover {
            background: var(--brand-light);
            color: var(--brand);
            transform: translateY(-1px);
        }
        .channel-link:hover i {
            color: var(--brand);
        }
        .channel-link.active {
            background: var(--brand);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, .28);
        }
        .channel-link.active i {
            color: #fff;
        }
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 23, 42, .86), rgba(30, 64, 175, .78)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            padding: 60px 0 52px;
            color: #fff;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            right: -80px;
            bottom: -80px;
            width: 260px;
            height: 260px;
            background: rgba(245, 158, 11, .12);
            border-radius: 50%;
            pointer-events: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .72);
            margin-bottom: 18px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, .72);
            text-decoration: none;
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb-sep {
            color: rgba(255, 255, 255, .38);
            margin: 0 2px;
        }
        .article-title {
            font-size: 34px;
            line-height: 1.35;
            font-weight: 800;
            max-width: 860px;
            margin-bottom: 18px;
            letter-spacing: -.5px;
            color: #fff;
            text-shadow: 0 2px 20px rgba(0, 0, 0, .18);
        }
        .page-hero .grid-container {
            position: relative;
            z-index: 1;
        }
        .article-meta-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, .82);
        }
        .article-meta-list span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .12);
            padding: 5px 12px;
            border-radius: 999px;
        }
        .article-meta-list i {
            opacity: .7;
        }
        .article-body-section {
            padding: var(--section-space) 0;
        }
        .article-main-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px;
            border: 1px solid var(--border);
            transition: box-shadow .3s ease;
        }
        .article-main-card:hover {
            box-shadow: var(--shadow-md);
        }
        .article-content {
            font-size: 16px;
            line-height: 2;
            color: var(--text);
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 800;
            margin-top: 36px;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--brand-light);
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin-top: 28px;
            margin-bottom: 14px;
        }
        .article-content p {
            margin-bottom: 20px;
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            max-width: 100%;
            box-shadow: var(--shadow-sm);
        }
        .article-content blockquote {
            border-left: 4px solid var(--brand);
            background: var(--brand-light);
            padding: 16px 22px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            color: var(--text-weak);
        }
        .article-content ul,
        .article-content ol {
            padding-left: 20px;
            margin-bottom: 20px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content a {
            color: var(--brand);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--brand-dark);
        }
        .article-footer-nav {
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .article-not-found {
            text-align: center;
            padding: 48px 20px;
        }
        .not-found-icon {
            font-size: 58px;
            color: var(--brand);
            margin-bottom: 20px;
            opacity: .8;
        }
        .article-not-found h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-weak);
            margin-bottom: 26px;
            font-size: 16px;
        }
        .sidebar-wrap {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 132px;
        }
        .side-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow .25s ease, transform .25s ease;
        }
        .side-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .side-card .card-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text);
        }
        .side-card .card-title::after {
            content: '';
            flex: 1;
            height: 2px;
            background: var(--border);
            border-radius: 2px;
            margin-left: 4px;
        }
        .side-card .card-title i {
            color: var(--brand);
            font-size: 16px;
        }
        .side-card p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .side-card img {
            border-radius: var(--radius-md);
            width: 100%;
            height: auto;
            margin-bottom: 16px;
            border: 1px solid var(--border);
        }
        .side-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .side-list li {
            padding: 11px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
        }
        .side-list li:last-child {
            border-bottom: none;
        }
        .side-list a {
            color: var(--text);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color .2s, padding-left .2s;
        }
        .side-list a i {
            color: var(--accent);
            font-size: 11px;
            transition: transform .2s;
        }
        .side-list a:hover {
            color: var(--brand);
            padding-left: 4px;
        }
        .side-list a:hover i {
            transform: translateX(3px);
        }
        .stats-band {
            background: linear-gradient(135deg, #0f172a, #1e3a8a);
            padding: 60px 0;
            color: #fff;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .stat-item {
            text-align: center;
            padding: 20px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-md);
            transition: background .25s, transform .25s;
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, .08);
            transform: translateY(-4px);
        }
        .stat-number {
            font-size: 44px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, .72);
            margin-top: 8px;
            letter-spacing: .5px;
        }
        .related-section {
            padding: var(--section-space) 0;
        }
        .section-head {
            text-align: center;
            max-width: 660px;
            margin: 0 auto 44px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            letter-spacing: -.5px;
        }
        .section-head h2 i {
            color: var(--brand);
            font-size: 24px;
        }
        .section-head p {
            color: var(--text-weak);
            font-size: 16px;
        }
        .related-card {
            display: block;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            text-decoration: none;
            color: var(--text);
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--brand-light);
            color: var(--text);
        }
        .related-card-image {
            display: block;
            overflow: hidden;
            background: var(--brand-light);
        }
        .related-card-image img {
            width: 100%;
            height: 168px;
            object-fit: cover;
            display: block;
            transition: transform .4s ease;
        }
        .related-card:hover .related-card-image img {
            transform: scale(1.06);
        }
        .related-card-body {
            display: block;
            padding: 22px;
        }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: .3px;
        }
        .tag-blue {
            background: var(--brand-light);
            color: var(--brand);
        }
        .related-card-title {
            display: block;
            font-weight: 700;
            font-size: 16px;
            line-height: 1.6;
            margin-bottom: 12px;
            min-height: 48px;
        }
        .related-card-meta {
            display: block;
            font-size: 13px;
            color: var(--text-weak);
        }
        .related-card-meta i {
            margin-right: 4px;
            color: var(--accent);
            font-size: 12px;
        }
        .empty-tip {
            text-align: center;
            color: var(--text-weak);
            padding: 40px 0;
            font-size: 15px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
        }
        .faq-section {
            padding: var(--section-space) 0;
            background: var(--surface);
        }
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px 28px;
            transition: box-shadow .25s ease, border-color .25s, transform .25s;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--brand-light);
            transform: translateY(-3px);
        }
        .faq-q {
            font-weight: 700;
            font-size: 15px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text);
        }
        .faq-q i {
            color: var(--brand);
            font-size: 14px;
            margin-top: 2px;
        }
        .faq-a {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
        }
        .cta-section {
            background: linear-gradient(135deg, #1e3a8a, #2563eb);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -70px;
            right: -70px;
            width: 220px;
            height: 220px;
            background: rgba(255, 255, 255, .06);
            border-radius: 50%;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: 10%;
            width: 180px;
            height: 180px;
            background: rgba(245, 158, 11, .08);
            border-radius: 50%;
        }
        .cta-box {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: var(--radius-lg);
            padding: 52px 44px;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            backdrop-filter: blur(8px);
            position: relative;
            z-index: 1;
        }
        .cta-box h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -.3px;
        }
        .cta-box p {
            color: rgba(255, 255, 255, .78);
            font-size: 16px;
            margin-bottom: 0;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-top: 30px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            line-height: 1.4;
        }
        .btn i {
            font-size: 13px;
        }
        .btn-primary {
            background: var(--brand);
            color: #fff;
            box-shadow: 0 4px 16px rgba(37, 99, 235, .28);
        }
        .btn-primary:hover {
            background: var(--brand-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, .36);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--brand);
            color: var(--brand);
        }
        .btn-outline:hover {
            background: var(--brand);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-ghost {
            background: var(--bg);
            color: var(--text);
            border-color: var(--border);
        }
        .btn-ghost:hover {
            background: var(--brand-light);
            color: var(--brand);
            border-color: var(--brand-light);
        }
        .btn-block {
            width: 100%;
        }
        .btn-light {
            background: #fff;
            color: var(--brand-dark);
        }
        .btn-light:hover {
            background: var(--brand-light);
            color: var(--brand-dark);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, .6);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .14);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, .7);
            padding: 64px 0 0;
        }
        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand .brand-logo {
            color: #fff;
            font-size: 22px;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            line-height: 1.85;
            margin-top: 16px;
            max-width: 380px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: rgba(255, 255, 255, .6);
            text-decoration: none;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color .2s, padding-left .2s;
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-col a i {
            font-size: 10px;
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
            flex-wrap: wrap;
            gap: 10px;
        }
        .footer-links {
            display: flex;
            gap: 20px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .45);
            text-decoration: none;
            transition: color .2s;
        }
        .footer-links a:hover {
            color: #fff;
        }
        @media (max-width: 1024px) {
            :root {
                --section-space: 64px;
            }
            .article-title {
                font-size: 30px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .footer-main {
                grid-template-columns: 1fr 1fr;
            }
            .sidebar-wrap {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-brand-row .brand-wrap {
                flex-direction: column;
                gap: 12px;
                align-items: stretch;
            }
            .header-search {
                width: 100%;
            }
            .channel-nav {
                padding: 6px 0;
            }
            .channel-link {
                padding: 8px 14px;
                font-size: 13px;
            }
            .page-hero {
                padding: 44px 0 40px;
            }
            .article-title {
                font-size: 26px;
            }
            .article-main-card {
                padding: 24px;
            }
            .cta-box {
                padding: 36px 22px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .footer-main {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container,
            .grid-container {
                padding: 0 16px;
            }
            .page-hero {
                padding: 36px 0 32px;
            }
            .article-title {
                font-size: 22px;
            }
            .article-meta-list {
                gap: 8px 12px;
                font-size: 12px;
            }
            .stats-band {
                padding: 40px 0;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 32px;
            }
            .stat-item {
                padding: 16px 8px;
            }
            .related-card-image img {
                height: 180px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }