/* roulang page: index */
:root {
  --c-primary: #0B3B2E;
  --c-accent: #C6F24E;
  --c-accent-hover: #D8FF5C;
  --c-copper: #C9A063;
  --c-bg-main: #0F1214;
  --c-bg-section: #151A1D;
  --c-bg-card: #1E262B;
  --c-bg-elevated: #232C31;
  --c-text-main: #F2F5F3;
  --c-text-secondary: #A8B4AE;
  --c-text-muted: #6C7A74;
  --c-border: #2A353A;
  --c-border-card: #2E3A40;
  --c-success: #3DD68C;
  --c-warning: #F5A623;
  --r-lg: 16px;
  --r-md: 12px;
  --r-sm: 8px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.35);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "Barlow Condensed", "PingFang SC", sans-serif;
  --container: 1280px;
  --sp-section: 80px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-cn); background: var(--c-bg-main); color: var(--c-text-main); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; border: none; outline: none; }
ul, ol { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 999px; font-weight: 700; font-size: 15px; padding: 14px 32px; transition: all .25s ease; cursor: pointer; line-height: 1.2; }
.btn-primary { background: var(--c-accent); color: var(--c-primary); }
.btn-primary:hover { background: var(--c-accent-hover); box-shadow: 0 0 24px rgba(198, 242, 78, 0.3); transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255, 255, 255, 0.6); }
.btn-outline:hover { border-color: var(--c-accent); color: var(--c-accent); transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn-sm { padding: 8px 20px; font-size: 14px; }
.text-link { display: inline-flex; align-items: center; gap: 5px; color: var(--c-accent); font-weight: 600; font-size: 14px; transition: color .2s; }
.text-link .arrow { transition: transform .2s; }
.text-link:hover .arrow { transform: translateX(4px); }

/* ===== Header ===== */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(15, 18, 20, 0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--c-border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-size: 24px; font-weight: 800; color: var(--c-text-main); letter-spacing: 0.5px; display: flex; align-items: center; gap: 4px; }
.brand-highlight { color: var(--c-accent); }
.brand:hover { color: var(--c-accent); }
.header-right { display: flex; align-items: center; gap: 14px; }
.search-box { display: flex; align-items: center; background: rgba(27, 34, 38, 0.8); border: 1px solid var(--c-border-card); border-radius: 999px; padding: 0 6px 0 16px; height: 42px; width: 220px; transition: border-color .2s; }
.search-box:focus-within { border-color: var(--c-accent); box-shadow: 0 0 0 3px rgba(198, 242, 78, 0.12); }
.search-box input { background: transparent; border: none; color: var(--c-text-main); font-size: 14px; width: 100%; height: 100%; }
.search-box input::placeholder { color: var(--c-text-muted); }
.search-box button { background: transparent; color: var(--c-text-secondary); width: 32px; height: 32px; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: color .2s; }
.search-box button:hover { color: var(--c-accent); }
.menu-toggle { display: none; flex-direction: column; gap: 5px; background: transparent; width: 40px; height: 40px; border-radius: 10px; cursor: pointer; align-items: center; justify-content: center; }
.menu-toggle span { display: block; width: 20px; height: 2px; background: var(--c-text-main); border-radius: 2px; transition: all .3s; }
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.header-cta { padding: 10px 24px; font-size: 14px; }

/* ===== Channel Nav ===== */
.channel-nav { border-top: 1px solid rgba(42, 53, 58, 0.5); background: rgba(15, 18, 20, 0.6); }
.channel-nav-inner { display: flex; align-items: center; gap: 10px; height: 48px; overflow-x: auto; scrollbar-width: none; -ms-overflow-style: none; }
.channel-nav-inner::-webkit-scrollbar { display: none; }
.channel-tab { flex-shrink: 0; display: inline-flex; align-items: center; padding: 8px 20px; border-radius: 999px; border: 1px solid transparent; font-size: 14px; font-weight: 600; color: var(--c-text-secondary); transition: all .2s; }
.channel-tab:hover { color: var(--c-text-main); border-color: var(--c-border-card); background: var(--c-bg-card); }
.channel-tab.active { background: var(--c-accent); color: var(--c-primary); border-color: transparent; }

/* ===== Hero ===== */
.hero { position: relative; min-height: 90vh; min-height: 600px; display: flex; align-items: center; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; z-index: 0; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(15, 18, 20, 0.96), rgba(15, 18, 20, 0.55) 55%, rgba(15, 18, 20, 0.35)); z-index: 1; }
.hero-content { position: relative; z-index: 2; width: 100%; max-width: 720px; padding-top: 40px; padding-bottom: 60px; }
.hero-eyebrow { display: inline-block; background: rgba(198, 242, 78, 0.12); color: var(--c-accent); font-size: 13px; font-weight: 700; letter-spacing: 1px; padding: 6px 16px; border-radius: 999px; margin-bottom: 20px; border: 1px solid rgba(198, 242, 78, 0.2); }
.hero h1 { font-size: 54px; line-height: 1.15; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 22px; }
.hero h1 .highlight { color: var(--c-accent); }
.hero-subtitle { font-size: 18px; line-height: 1.7; color: var(--c-text-secondary); margin-bottom: 34px; max-width: 600px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.hero-quick { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; max-width: 560px; }
.quick-card { background: rgba(30, 38, 43, 0.75); border: 1px solid var(--c-border-card); border-radius: var(--r-md); padding: 14px 18px; font-size: 14px; font-weight: 600; color: var(--c-text-main); transition: all .2s; display: flex; align-items: center; gap: 10px; }
.quick-card i { color: var(--c-accent); font-size: 16px; }
.quick-card:hover { border-color: var(--c-accent); transform: translateY(-2px); box-shadow: var(--shadow); }

/* ===== Stats Bar ===== */
.stats-bar { border-top: 1px solid var(--c-border); background: var(--c-bg-section); padding: 36px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-item { text-align: center; border-right: 1px solid var(--c-border); padding: 0 16px; }
.stat-item:last-child { border-right: none; }
.stat-item strong { display: block; font-family: var(--font-num); font-size: 36px; font-weight: 800; color: var(--c-text-main); line-height: 1.2; }
.stat-item span { color: var(--c-text-muted); font-size: 14px; margin-top: 6px; display: block; }

/* ===== Section ===== */
.section { padding: var(--sp-section) 0; }
.section-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 30px; flex-wrap: wrap; }
.section-header h2 { font-size: 30px; font-weight: 800; letter-spacing: -0.3px; position: relative; padding-left: 16px; }
.section-header h2::before { content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 4px; background: var(--c-accent); border-radius: 4px; }
.section-header p { color: var(--c-text-secondary); font-size: 15px; margin-top: 6px; }
.view-all { color: var(--c-accent); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.view-all:hover .arrow { transform: translateX(4px); }
.view-all .arrow { transition: transform .2s; }

/* ===== Rail ===== */
.rail-track { display: flex; gap: 20px; overflow-x: auto; padding-bottom: 12px; scroll-snap-type: x mandatory; scrollbar-width: thin; scrollbar-color: var(--c-border-card) transparent; }
.rail-track::-webkit-scrollbar { height: 6px; }
.rail-track::-webkit-scrollbar-thumb { background: var(--c-border-card); border-radius: 4px; }
.rail-track::-webkit-scrollbar-track { background: transparent; }
.rail-card { flex: 0 0 280px; scroll-snap-align: start; background: var(--c-bg-card); border: 1px solid var(--c-border-card); border-radius: var(--r-lg); overflow: hidden; transition: transform .25s, box-shadow .25s, border-color .25s; }
.rail-card:hover { transform: translateY(-4px); border-color: var(--c-accent); box-shadow: var(--shadow-hover); }
.rail-card .cover { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.rail-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.rail-card:hover .cover img { transform: scale(1.05); }
.rail-card .cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(15, 18, 20, 0.6), transparent 55%); }
.rail-body { padding: 16px 18px 18px; }
.rail-body .badge-line { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.rail-body h3 { font-size: 17px; font-weight: 700; line-height: 1.4; margin-bottom: 6px; }
.rail-body p { font-size: 14px; color: var(--c-text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ===== Badge ===== */
.badge { display: inline-flex; align-items: center; background: rgba(198, 242, 78, 0.1); color: var(--c-accent); font-size: 12px; font-weight: 700; padding: 3px 12px; border-radius: 999px; border: 1px solid rgba(198, 242, 78, 0.2); }
.badge.copper { background: rgba(201, 160, 99, 0.12); color: var(--c-copper); border-color: rgba(201, 160, 99, 0.2); }

/* ===== Featured ===== */
.featured-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.featured-card { position: relative; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--c-border-card); background: var(--c-bg-card); transition: transform .25s, box-shadow .25s, border-color .25s; display: flex; flex-direction: column; }
.featured-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--c-accent); }
.featured-card img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.featured-card .featured-body { position: relative; z-index: 2; padding: 20px; margin-top: auto; background: linear-gradient(to top, rgba(15, 18, 20, 0.9), transparent); }
.featured-card .featured-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.featured-card .featured-body p { font-size: 13px; color: var(--c-text-secondary); }
.featured-card.featured-large { grid-column: span 2; grid-row: span 2; min-height: 380px; }
.featured-card:not(.featured-large) { min-height: 230px; }

/* ===== Category Section ===== */
.category-section { background: var(--c-bg-section); }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.category-card { background: var(--c-bg-card); border: 1px solid var(--c-border-card); border-radius: var(--r-lg); overflow: hidden; transition: transform .25s, box-shadow .25s, border-color .25s; }
.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--c-accent); }
.category-card .cover { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.category-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.category-card:hover .cover img { transform: scale(1.05); }
.category-card .cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(15, 18, 20, 0.55), transparent 50%); }
.category-card .card-body { padding: 18px; }
.category-card .card-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.category-card .card-body p { font-size: 14px; color: var(--c-text-secondary); margin-bottom: 12px; }

/* ===== Latest News ===== */
.latest-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.news-card { background: var(--c-bg-card); border: 1px solid var(--c-border-card); border-radius: var(--r-lg); padding: 20px; transition: transform .2s, border-color .2s, box-shadow .2s; }
.news-card:hover { transform: translateY(-3px); border-color: var(--c-accent); box-shadow: var(--shadow); }
.news-card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.news-card .time { font-size: 13px; color: var(--c-text-muted); }
.news-title { font-size: 18px; font-weight: 700; line-height: 1.45; margin-bottom: 8px; }
.news-title a:hover { color: var(--c-accent); }
.news-summary { font-size: 14px; color: var(--c-text-secondary); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; }
.empty-state { grid-column: 1 / -1; text-align: center; padding: 60px 20px; background: var(--c-bg-section); border: 1px dashed var(--c-border-card); border-radius: var(--r-lg); color: var(--c-text-muted); font-size: 15px; }

/* ===== CTA ===== */
.cta-section { position: relative; padding: 100px 0; text-align: center; overflow: hidden; }
.cta-bg { position: absolute; inset: 0; background-size: cover; background-position: center; z-index: 0; }
.cta-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(11, 59, 46, 0.85), rgba(15, 18, 20, 0.75)); z-index: 1; }
.cta-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
.cta-content h2 { font-size: 38px; font-weight: 800; line-height: 1.25; margin-bottom: 16px; }
.cta-content p { font-size: 17px; color: var(--c-text-secondary); margin-bottom: 32px; }

/* ===== FAQ ===== */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { background: var(--c-bg-section); border: 1px solid var(--c-border-card); border-radius: var(--r-md); margin-bottom: 12px; overflow: hidden; transition: border-color .2s; }
.faq-item.active { border-color: var(--c-accent); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 22px; background: transparent; color: var(--c-text-main); font-size: 16px; font-weight: 600; cursor: pointer; text-align: left; transition: color .2s; }
.faq-question:hover { color: var(--c-accent); }
.faq-icon { flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%; background: var(--c-bg-card); display: flex; align-items: center; justify-content: center; font-size: 14px; color: var(--c-accent); transition: transform .3s; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-answer-inner { padding: 0 22px 20px; color: var(--c-text-secondary); font-size: 15px; line-height: 1.8; }

/* ===== Footer ===== */
.site-footer { background: #0B0E10; border-top: 1px solid var(--c-border); padding: 60px 0 0; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid var(--c-border); }
.footer-brand { font-size: 22px; font-weight: 800; margin-bottom: 12px; display: flex; align-items: center; gap: 4px; }
.footer-desc { font-size: 14px; color: var(--c-text-muted); line-height: 1.8; max-width: 320px; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a { width: 38px; height: 38px; border-radius: 50%; background: var(--c-bg-card); border: 1px solid var(--c-border-card); display: flex; align-items: center; justify-content: center; color: var(--c-text-secondary); font-size: 15px; transition: all .2s; }
.footer-social a:hover { background: var(--c-accent); color: var(--c-primary); border-color: var(--c-accent); }
.footer-col h4 { font-size: 15px; font-weight: 700; margin-bottom: 16px; color: var(--c-text-main); }
.footer-col a { display: block; padding: 5px 0; font-size: 14px; color: var(--c-text-secondary); transition: color .2s; }
.footer-col a:hover { color: var(--c-accent); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding: 24px 0 28px; font-size: 13px; color: var(--c-text-muted); }
.footer-bottom a { color: var(--c-text-secondary); }
.footer-bottom a:hover { color: var(--c-accent); }

/* ===== Mobile Menu Panel ===== */
.mobile-menu { display: none; background: rgba(15, 18, 20, 0.98); border-bottom: 1px solid var(--c-border); padding: 20px 24px; }
.mobile-menu.open { display: block; }
.mobile-menu .search-box { width: 100%; margin-bottom: 16px; }
.mobile-menu .mobile-links { display: flex; flex-direction: column; gap: 4px; }
.mobile-menu .mobile-links a { padding: 12px 8px; border-radius: 10px; font-size: 15px; font-weight: 600; color: var(--c-text-secondary); transition: all .2s; }
.mobile-menu .mobile-links a:hover, .mobile-menu .mobile-links a.active { background: var(--c-bg-card); color: var(--c-accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .featured-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-card.featured-large { grid-column: span 2; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 44px; }
  .search-box { width: 170px; }
}
@media (max-width: 767px) {
  :root { --sp-section: 48px; }
  .container { padding: 0 16px; }
  .header-inner { height: 58px; }
  .brand { font-size: 20px; }
  .search-box { display: none; }
  .header-cta { display: none; }
  .menu-toggle { display: flex; }
  .channel-nav { position: relative; }
  .channel-nav-inner { height: 46px; gap: 8px; padding-left: 16px; padding-right: 16px; }
  .channel-tab { padding: 7px 16px; font-size: 13px; }
  .hero { min-height: 68vh; }
  .hero h1 { font-size: 32px; }
  .hero-subtitle { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-quick { grid-template-columns: 1fr; width: 100%; max-width: 100%; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--c-border); padding-bottom: 16px; }
  .stat-item strong { font-size: 28px; }
  .section-header h2 { font-size: 24px; }
  .rail-card { flex-basis: 220px; }
  .featured-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .featured-card:not(.featured-large) { min-height: 160px; }
  .featured-card .featured-body { padding: 12px; }
  .featured-card .featured-body h3 { font-size: 15px; }
  .category-grid { grid-template-columns: 1fr; gap: 16px; }
  .latest-grid { grid-template-columns: 1fr; }
  .cta-section { padding: 60px 0; }
  .cta-content h2 { font-size: 28px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .faq-question { font-size: 15px; padding: 16px 16px; }
  .faq-answer-inner { padding: 0 16px 18px; }
}
@media (max-width: 480px) {
  .featured-grid { grid-template-columns: 1fr; }
  .featured-card.featured-large { grid-column: span 1; }
  .featured-card:not(.featured-large) { min-height: 200px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 28px; }
}

/* roulang page: article */
:root {
    --primary: #0B3B2E;
    --primary-dark: #082A21;
    --accent: #C6F24E;
    --accent-hover: #D4FF4A;
    --copper: #C9A063;
    --bg-main: #0F1214;
    --bg-section: #151A1D;
    --bg-card: #1E262B;
    --bg-card-hover: #232C31;
    --bg-input: #1B2226;
    --text-main: #F2F5F3;
    --text-secondary: #A8B4AE;
    --text-muted: #6C7A74;
    --border: #2E3A40;
    --border-light: #2A353A;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-pill: 999px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.35);
    --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --transition: all 0.3s ease;
    --header-height: 64px;
    --nav-height: 50px;
    --container-w: 1280px;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-cn);
    background: var(--bg-main);
    color: var(--text-main);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    display: block;
}
ul,
ol {
    list-style: none;
}
button,
input {
    font-family: inherit;
    border: none;
    outline: none;
    background: none;
}
.container {
    width: 100%;
    max-width: var(--container-w);
    margin: 0 auto;
    padding: 0 24px;
}
/* ---------- Header / Nav ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(16, 20, 22, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-light);
}
.top-bar {
    height: var(--header-height);
    border-bottom: 1px solid rgba(46, 58, 64, 0.5);
}
.top-bar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: 20px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.logo-mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: var(--accent);
    color: var(--primary);
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 18px rgba(198, 242, 78, 0.25);
}
.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
    color: var(--text-main);
}
.brand-highlight {
    color: var(--accent);
}
.top-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}
.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 0 16px;
    height: 40px;
    width: 260px;
    transition: var(--transition);
}
.search-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(198, 242, 78, 0.15);
}
.search-box i {
    color: var(--text-muted);
    font-size: 14px;
    margin-right: 10px;
}
.search-box input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 14px;
    height: 100%;
}
.search-box input::placeholder {
    color: var(--text-muted);
}
.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border);
    color: var(--text-main);
    font-size: 18px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.menu-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.channel-nav {
    height: var(--nav-height);
    background: rgba(16, 20, 22, 0.6);
}
.channel-nav-inner {
    display: flex;
    align-items: center;
    gap: 10px;
    height: 100%;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.channel-nav-inner::-webkit-scrollbar {
    display: none;
}
.channel-tab {
    padding: 8px 22px;
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    white-space: nowrap;
    transition: var(--transition);
    cursor: pointer;
}
.channel-tab:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(198, 242, 78, 0.08);
}
.channel-tab.active {
    background: var(--accent);
    color: var(--primary);
    border-color: var(--accent);
    font-weight: 700;
}
/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    border: 1px solid transparent;
}
.btn-primary {
    background: var(--accent);
    color: var(--primary);
}
.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 24px rgba(198, 242, 78, 0.35);
    transform: translateY(-1px);
}
.btn-primary:active {
    transform: translateY(0);
}
.btn-ghost {
    background: transparent;
    color: var(--text-main);
    border-color: rgba(255, 255, 255, 0.35);
}
.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.btn-sm {
    padding: 8px 20px;
    font-size: 14px;
}
.btn .arrow {
    transition: transform 0.3s ease;
}
.btn:hover .arrow {
    transform: translateX(4px);
}
/* ---------- Article Banner ---------- */
.article-banner {
    position: relative;
    height: 300px;
    overflow: hidden;
}
.article-banner-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.article-banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 18, 20, 0.95), rgba(15, 18, 20, 0.4) 60%, rgba(15, 18, 20, 0.6));
}
/* ---------- Breadcrumb ---------- */
.breadcrumb-wrap {
    background: var(--bg-section);
    border-bottom: 1px solid var(--border-light);
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
    padding: 14px 0;
    flex-wrap: wrap;
}
.breadcrumb a {
    color: var(--text-secondary);
    transition: var(--transition);
}
.breadcrumb a:hover {
    color: var(--accent);
}
.breadcrumb span {
    color: var(--text-muted);
}
.breadcrumb .current {
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 300px;
}
/* ---------- Article Main ---------- */
.article-layout {
    padding-top: 48px;
    padding-bottom: 64px;
}
.article-detail {
    max-width: 860px;
    margin: 0 auto;
}
.article-header {
    margin-bottom: 36px;
}
.article-header .category-pill {
    display: inline-block;
    background: rgba(198, 242, 78, 0.15);
    color: var(--accent);
    border: 1px solid rgba(198, 242, 78, 0.4);
    border-radius: var(--radius-pill);
    padding: 4px 14px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}
.article-header h1 {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.35;
    letter-spacing: -0.4px;
    color: var(--text-main);
    margin-bottom: 20px;
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    color: var(--text-muted);
    font-size: 14px;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 20px;
}
.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
}
.meta-item i {
    color: var(--copper);
    font-size: 13px;
}
/* ---------- Article Body ---------- */
.article-body {
    font-size: 17px;
    line-height: 1.9;
    color: #E8EEEB;
}
.article-body h2 {
    font-size: 26px;
    font-weight: 700;
    margin: 40px 0 16px;
    padding-left: 16px;
    border-left: 4px solid var(--accent);
    color: var(--text-main);
    line-height: 1.4;
}
.article-body h3 {
    font-size: 21px;
    font-weight: 600;
    margin: 32px 0 12px;
    color: var(--text-main);
}
.article-body p {
    margin: 0 0 20px;
}
.article-body a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}
.article-body a:hover {
    color: var(--accent-hover);
}
.article-body blockquote {
    border-left: 4px solid var(--accent);
    background: var(--bg-section);
    padding: 18px 24px;
    margin: 28px 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
    font-style: italic;
}
.article-body ul,
.article-body ol {
    margin: 0 0 22px;
    padding-left: 24px;
}
.article-body ul {
    list-style: disc;
}
.article-body ol {
    list-style: decimal;
}
.article-body li {
    margin-bottom: 8px;
    padding-left: 4px;
}
.article-body li::marker {
    color: var(--accent);
}
.article-body img {
    border-radius: var(--radius);
    margin: 28px 0;
    box-shadow: var(--shadow);
}
.article-body figure {
    margin: 28px 0;
}
.article-body figure img {
    margin: 0 0 10px;
}
.article-body figcaption {
    font-size: 14px;
    color: var(--text-muted);
    text-align: center;
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 28px 0;
    font-size: 15px;
}
.article-body table th,
.article-body table td {
    border: 1px solid var(--border);
    padding: 12px 16px;
    text-align: left;
}
.article-body table th {
    background: var(--bg-section);
    color: var(--accent);
    font-weight: 600;
}
.article-body table tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
}
.article-body hr {
    border: none;
    border-top: 1px solid var(--border-light);
    margin: 36px 0;
}
.article-body code {
    background: var(--bg-section);
    padding: 2px 8px;
    border-radius: 6px;
    font-family: "SFMono-Regular", Consolas, monospace;
    font-size: 14px;
    color: var(--accent);
}
.article-body pre {
    background: var(--bg-section);
    padding: 20px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: 24px 0;
    border: 1px solid var(--border);
}
.article-body pre code {
    background: none;
    padding: 0;
    color: var(--text-main);
}
/* ---- Article Empty ---- */
.article-empty {
    text-align: center;
    padding: 80px 20px;
    background: var(--bg-section);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
}
.article-empty i {
    font-size: 48px;
    color: var(--text-muted);
    margin-bottom: 16px;
    display: block;
}
.article-empty p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}
/* ---------- Tags & Share ---------- */
.article-tags {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}
.tag-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 600;
    margin-right: 4px;
}
.tag {
    padding: 5px 14px;
    border-radius: var(--radius-pill);
    background: var(--bg-section);
    border: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
}
.tag:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(198, 242, 78, 0.08);
}
.article-share {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
}
.article-share span {
    font-size: 14px;
    color: var(--text-muted);
}
.share-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-section);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 15px;
    transition: var(--transition);
}
.share-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}
/* ---------- Related Section ---------- */
.related-section {
    background: var(--bg-section);
    padding: 64px 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 28px;
    gap: 16px;
}
.section-head h2 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.3px;
    position: relative;
}
.section-head h2::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 48px;
    height: 3px;
    border-radius: 3px;
    background: var(--accent);
}
.section-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
    white-space: nowrap;
}
.section-link i {
    transition: transform 0.3s ease;
}
.section-link:hover {
    color: var(--accent);
}
.section-link:hover i {
    transform: translateX(4px);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.content-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.content-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}
.card-cover {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}
.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.content-card:hover .card-cover img {
    transform: scale(1.05);
}
.card-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 18, 20, 0.7), transparent 60%);
}
.card-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    background: var(--accent);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
.card-body {
    padding: 18px 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}
.card-body h3 {
    font-size: 17px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-main);
    transition: var(--transition);
}
.content-card:hover .card-body h3 {
    color: var(--accent);
}
.card-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.card-footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid rgba(46, 58, 64, 0.5);
    font-size: 13px;
    color: var(--text-muted);
}
.card-footer .read-more {
    color: var(--accent);
    font-weight: 600;
}
/* ---------- CTA Section ---------- */
.cta-section {
    position: relative;
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    padding: 80px 0;
    text-align: center;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(11, 59, 46, 0.92), rgba(15, 18, 20, 0.85));
}
.cta-inner {
    position: relative;
    z-index: 2;
    max-width: 680px;
    margin: 0 auto;
    padding: 0 24px;
}
.cta-inner h2 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.4px;
    margin-bottom: 16px;
    color: var(--text-main);
}
.cta-inner h2 span {
    color: var(--accent);
}
.cta-inner p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}
.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
/* ---------- FAQ Section ---------- */
.faq-section {
    padding: 64px 0;
    background: var(--bg-main);
}
.faq-section .section-head {
    justify-content: center;
    text-align: center;
}
.faq-section .section-head h2::after {
    left: 50%;
    transform: translateX(-50%);
}
.faq-list {
    max-width: 780px;
    margin: 0 auto;
}
.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-section);
    margin-bottom: 12px;
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover {
    border-color: var(--border);
}
.faq-item.open {
    border-color: rgba(198, 242, 78, 0.4);
}
.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    user-select: none;
    gap: 16px;
}
.faq-question .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--accent);
    transition: transform 0.3s ease, background 0.3s ease;
    flex-shrink: 0;
}
.faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: rgba(198, 242, 78, 0.15);
    border-color: var(--accent);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 22px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
}
.faq-item.open .faq-answer {
    max-height: 400px;
    padding: 0 22px 20px;
}
/* ---------- Article Back ---------- */
.article-back-section {
    background: var(--bg-main);
    padding: 48px 0 64px;
    text-align: center;
}
.article-back {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
/* ---------- Footer ---------- */
.site-footer {
    background: #0B0E10;
    border-top: 1px solid var(--border-light);
    padding: 56px 0 0;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 14px;
}
.footer-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 320px;
    margin-bottom: 20px;
}
.footer-social {
    display: flex;
    gap: 12px;
}
.footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--bg-section);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 15px;
    transition: var(--transition);
}
.footer-social a:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}
.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 16px;
}
.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    padding: 5px 0;
    transition: var(--transition);
}
.footer-col a:hover {
    color: var(--accent);
}
.footer-bottom {
    border-top: 1px solid var(--border-light);
    padding: 20px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-muted);
    flex-wrap: wrap;
    gap: 8px;
}
/* ---------- Responsive ---------- */
@media (max-width: 1199px) {
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-top {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 991px) {
    .search-box {
        width: 200px;
    }
    .search-box {
        display: none;
    }
    .article-header h1 {
        font-size: 30px;
    }
    .cta-inner h2 {
        font-size: 28px;
    }
}
@media (max-width: 767px) {
    .container {
        padding: 0 16px;
    }
    .top-bar-inner {
        gap: 12px;
    }
    .menu-toggle {
        display: flex;
    }
    .top-bar .btn {
        display: none;
    }
    .logo-text {
        font-size: 17px;
    }
    .logo-mark {
        width: 34px;
        height: 34px;
        font-size: 17px;
    }
    .channel-nav-inner {
        gap: 8px;
    }
    .channel-tab {
        padding: 7px 16px;
        font-size: 13px;
    }
    .article-banner {
        height: 200px;
    }
    .article-layout {
        padding-top: 28px;
        padding-bottom: 40px;
    }
    .article-header h1 {
        font-size: 26px;
        line-height: 1.4;
    }
    .article-meta {
        gap: 12px;
        font-size: 13px;
    }
    .article-body {
        font-size: 16px;
        line-height: 1.8;
    }
    .article-body h2 {
        font-size: 22px;
    }
    .article-body h3 {
        font-size: 19px;
    }
    .related-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .section-head h2 {
        font-size: 24px;
    }
    .cta-section {
        padding: 56px 0;
    }
    .cta-inner h2 {
        font-size: 24px;
    }
    .cta-inner p {
        font-size: 15px;
    }
    .footer-top {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .article-back-section {
        padding: 32px 0 48px;
    }
    .article-back .btn {
        width: 100%;
        max-width: 300px;
    }
}
@media (max-width: 520px) {
    .section-head {
        flex-direction: column;
        align-items: flex-start;
    }
    .article-banner {
        height: 160px;
    }
    .breadcrumb .current {
        max-width: 180px;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
}

/* roulang page: category1 */
:root {
            --primary: #0B3B2E;
            --accent: #C6F24E;
            --accent-hover: #D4FF4A;
            --gold: #C9A063;
            --bg-dark: #0F1214;
            --bg-section: #151A1D;
            --bg-card: #1E262B;
            --bg-card-hover: #232C31;
            --text-main: #F2F5F3;
            --text-secondary: #A8B4AE;
            --text-muted: #6C7A74;
            --border: #2A353A;
            --border-light: #2E3A40;
            --success: #3DD68C;
            --warning: #F5A623;
            --error: #FF5A5A;
            --disabled: #47535A;
            --radius: 16px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
            --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.35);
            --transition: all 0.3s ease;
            --container: 1280px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            margin: 0;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
        }

        input {
            font-family: inherit;
        }

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

        .section {
            padding: 80px 0;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 640px;
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            line-height: 1;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 0 24px rgba(198, 242, 78, 0.3);
            transform: translateY(-2px);
            color: var(--primary);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline {
            background: transparent;
            color: var(--text-main);
            border-color: rgba(255, 255, 255, 0.45);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 18px 48px;
            font-size: 17px;
        }

        .btn-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--accent);
        }

        .btn-arrow i {
            transition: transform 0.3s ease;
        }

        .btn-arrow:hover i {
            transform: translateX(4px);
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 18, 20, 0.9);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 24px;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 2px;
            flex-shrink: 0;
        }

        .brand-highlight {
            color: var(--accent);
            text-transform: lowercase;
        }

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

        .search-box {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-box input {
            width: 260px;
            height: 42px;
            background: rgba(27, 34, 38, 0.8);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 0 44px 0 18px;
            color: var(--text-main);
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .search-box input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(198, 242, 78, 0.15);
            background: rgba(27, 34, 38, 0.95);
        }

        .search-box button {
            position: absolute;
            right: 6px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .search-box button:hover {
            color: var(--accent);
        }

        .header-cta {
            padding: 10px 24px;
            font-size: 14px;
        }

        .mobile-menu-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border-light);
            color: var(--text-main);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .mobile-menu-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        /* Channel Nav */
        .channel-nav {
            background: rgba(15, 18, 20, 0.75);
            border-top: 1px solid rgba(42, 53, 58, 0.5);
        }

        .channel-nav-inner {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 48px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .channel-nav-inner::-webkit-scrollbar {
            display: none;
        }

        .channel-tab {
            display: inline-flex;
            align-items: center;
            padding: 7px 20px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: var(--transition);
            background: transparent;
        }

        .channel-tab:hover {
            border-color: var(--accent);
            color: var(--text-main);
        }

        .channel-tab.active {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            font-weight: 700;
        }

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 300px;
            height: 100vh;
            background: #111619;
            z-index: 1100;
            padding: 24px;
            box-shadow: -8px 0 30px rgba(0, 0, 0, 0.4);
            transform: translateX(100%);
            transition: transform 0.35s ease;
            overflow-y: auto;
        }

        .mobile-menu.open {
            transform: translateX(0);
        }

        .mobile-menu-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1050;
        }

        .mobile-menu-overlay.show {
            display: block;
        }

        .mobile-menu-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }

        .mobile-menu-close {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border-light);
            color: var(--text-main);
            font-size: 16px;
        }

        .mobile-menu a.mobile-menu-link {
            display: block;
            padding: 14px 12px;
            border-bottom: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            border-radius: 8px;
        }

        .mobile-menu a.mobile-menu-link:hover {
            color: var(--accent);
            background: rgba(198, 242, 78, 0.04);
        }

        .mobile-menu a.mobile-menu-link.active {
            color: var(--accent);
            font-weight: 600;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            padding: 90px 0 80px;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-bottom: 1px solid var(--border);
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 18, 20, 0.96), rgba(15, 18, 20, 0.55) 60%, rgba(15, 18, 20, 0.4));
        }

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

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(198, 242, 78, 0.12);
            border: 1px solid rgba(198, 242, 78, 0.35);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }

        .category-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(198, 242, 78, 0.6);
        }

        .category-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            max-width: 760px;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .category-hero .category-subtitle {
            color: var(--text-secondary);
            font-size: 17px;
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 32px;
        }

        .category-hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 48px;
        }

        .hero-quick-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-quick-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            background: rgba(15, 18, 20, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            color: var(--text-main);
            font-size: 14px;
            transition: var(--transition);
        }

        .hero-quick-link i {
            color: var(--accent);
        }

        .hero-quick-link:hover {
            border-color: var(--accent);
            transform: translateY(-2px);
            background: rgba(15, 18, 20, 0.85);
        }

        /* ===== Stats Bar ===== */
        .stats-bar {
            background: var(--bg-section);
            border-bottom: 1px solid var(--border);
            padding: 40px 0;
        }

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

        .stat-item {
            text-align: center;
            padding: 8px 16px;
            position: relative;
        }

        .stat-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 44px;
            background: var(--border-light);
        }

        .stat-item strong {
            display: block;
            font-size: 34px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 4px;
            letter-spacing: -0.5px;
        }

        .stat-item span {
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* ===== Features ===== */
        .features-section {
            background: var(--bg-dark);
        }

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

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--accent);
            box-shadow: var(--shadow-hover);
            background: var(--bg-card-hover);
        }

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

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: rgba(198, 242, 78, 0.1);
            color: var(--accent);
            margin-bottom: 18px;
            border: 1px solid rgba(198, 242, 78, 0.18);
        }

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

        .feature-card p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ===== Scenes ===== */
        .scenes-section {
            background: var(--bg-section);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .scene-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 24px;
            transition: var(--transition);
        }

        .scene-card:hover {
            border-color: var(--gold);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .scene-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            background: rgba(201, 160, 99, 0.12);
            color: var(--gold);
            border: 1px solid rgba(201, 160, 99, 0.2);
            flex-shrink: 0;
        }

        .scene-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
        }

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

        /* ===== Process ===== */
        .process-section {
            background: var(--bg-dark);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 8px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 15%;
            right: 15%;
            height: 2px;
            background: repeating-linear-gradient(90deg, var(--border-light) 0 8px, transparent 8px 14px);
            z-index: 0;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 16px;
        }

        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            color: var(--accent);
            margin: 0 auto 16px;
            box-shadow: 0 0 20px rgba(198, 242, 78, 0.15);
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .process-step p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.65;
        }

        /* ===== Category Cards ===== */
        .category-cards-section {
            background: var(--bg-section);
            border-top: 1px solid var(--border);
        }

        .category-cards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

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

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

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

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

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

        .category-card .card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 18, 20, 0.55), transparent 60%);
        }

        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(11, 59, 46, 0.85);
            backdrop-filter: blur(4px);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            border: 1px solid rgba(198, 242, 78, 0.25);
        }

        .card-body {
            padding: 18px 20px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.65;
            flex: 1;
            margin-bottom: 14px;
        }

        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .card-tag-mini {
            color: var(--gold);
            font-size: 12px;
            font-weight: 500;
            background: rgba(201, 160, 99, 0.1);
            padding: 3px 10px;
            border-radius: 999px;
        }

        .card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .card-link:hover {
            color: var(--accent);
        }

        .card-link i {
            transition: transform 0.3s;
            font-size: 12px;
        }

        .card-link:hover i {
            transform: translateX(3px);
        }

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

        .faq-list {
            max-width: 860px;
            background: var(--bg-section);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
        }

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

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 28px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            list-style: none;
            transition: background 0.3s ease;
            user-select: none;
        }

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

        .faq-item summary:hover {
            background: rgba(198, 242, 78, 0.04);
        }

        .faq-item summary::after {
            content: '+';
            font-size: 24px;
            font-weight: 300;
            color: var(--accent);
            transition: transform 0.3s ease;
            line-height: 1;
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item[open] summary {
            border-bottom: 1px solid var(--border);
        }

        .faq-answer {
            padding: 6px 28px 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            text-align: center;
            border-top: 1px solid var(--border);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 18, 20, 0.92), rgba(11, 59, 46, 0.7));
        }

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

        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 28px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0B0E10;
            border-top: 1px solid var(--border);
            padding-top: 60px;
        }

        .site-footer .container {
            padding-bottom: 24px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border);
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            display: inline-flex;
            align-items: center;
            gap: 2px;
            margin-bottom: 12px;
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
            margin-bottom: 20px;
        }

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

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 16px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 18px;
        }

        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 14px;
            padding: 5px 0;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom span {
            color: var(--text-muted);
            font-size: 13px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps::before {
                display: none;
            }
        }

        @media (max-width: 991px) {
            .search-box input {
                width: 180px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-item:nth-child(2)::after {
                display: none;
            }
            .stat-item {
                padding: 12px 0;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-desc {
                font-size: 14px;
                margin-bottom: 28px;
            }
            .header-cta {
                display: none;
            }
            .search-box {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .category-hero {
                padding: 60px 0 48px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero .category-subtitle {
                font-size: 15px;
            }
            .category-hero-actions {
                flex-direction: column;
                align-items: flex-start;
                margin-bottom: 32px;
            }
            .hero-quick-links {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-quick-link {
                justify-content: flex-start;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .scenes-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .category-cards-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .faq-item summary {
                padding: 18px 20px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 4px 20px 20px;
                font-size: 14px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-item strong {
                font-size: 26px;
            }
        }

        @media (max-width: 480px) {
            .brand-logo {
                font-size: 19px;
            }
            .channel-tab {
                padding: 6px 14px;
                font-size: 13px;
            }
            .stat-item::after {
                display: none;
            }
            .btn-lg {
                padding: 16px 36px;
                font-size: 15px;
            }
        }

/* roulang page: category2 */
:root{
  --primary:#0B3B2E;
  --accent:#C6F24E;
  --accent-hover:#D4FF4A;
  --copper:#C9A063;
  --bg:#0F1214;
  --bg-block:#151A1D;
  --bg-card:#1E262B;
  --bg-card-2:#232C31;
  --bg-float:rgba(16,20,22,0.88);
  --text-main:#F2F5F3;
  --text-sub:#A8B4AE;
  --text-dim:#6C7A74;
  --text-invert:#0B3B2E;
  --border:#2A353A;
  --border-card:#2E3A40;
  --success:#3DD68C;
  --warning:#F5A623;
  --error:#FF5A5A;
  --disabled:#47535A;
  --radius:16px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow:0 4px 20px rgba(0,0,0,0.2);
  --shadow-hover:0 10px 30px rgba(0,0,0,0.35);
  --transition:all 0.3s ease;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-en:"Barlow Condensed",Inter,"PingFang SC",sans-serif;
  --container:1280px;
}

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

html{
  scroll-behavior:smooth;
}

body{
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  background:var(--bg);
  color:var(--text-main);
  -webkit-font-smoothing:antialiased;
}

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

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

ul,ol{
  list-style:none;
}

button,input{
  font-family:inherit;
  border:none;
  outline:none;
  background:none;
}

input::placeholder{
  color:var(--text-dim);
}

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

.highlight{
  color:var(--accent);
}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 32px;
  border-radius:var(--radius-pill);
  font-weight:700;
  font-size:15px;
  line-height:1;
  cursor:pointer;
  transition:var(--transition);
  border:2px solid transparent;
  white-space:nowrap;
}

.btn i{
  font-size:14px;
  transition:transform 0.3s ease;
}

.btn-primary{
  background:var(--accent);
  color:var(--text-invert);
  box-shadow:0 0 0 rgba(198,242,78,0);
}

.btn-primary:hover{
  background:var(--accent-hover);
  box-shadow:0 0 24px rgba(198,242,78,0.3);
  transform:translateY(-2px);
}

.btn-primary:active{
  transform:translateY(0) scale(0.98);
}

.btn-outline{
  background:transparent;
  border-color:rgba(242,245,243,0.5);
  color:var(--text-main);
}

.btn-outline:hover{
  border-color:var(--accent);
  color:var(--accent);
  transform:translateY(-2px);
}

.btn-outline:active{
  transform:translateY(0) scale(0.98);
}

.btn-large{
  padding:16px 44px;
  font-size:17px;
}

.btn-small{
  padding:10px 22px;
  font-size:14px;
}

.arrow-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  color:var(--accent);
  transition:var(--transition);
}

.arrow-link i{
  transition:transform 0.3s ease;
}

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

/* ===== Header ===== */
.site-header{
  position:relative;
  z-index:1000;
}

.header-main{
  position:sticky;
  top:0;
  background:var(--bg-float);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(42,53,58,0.7);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:64px;
}

.brand-logo{
  display:inline-flex;
  align-items:baseline;
  font-family:var(--font-en);
  font-size:22px;
  font-weight:800;
  letter-spacing:0.5px;
  color:var(--text-main);
  flex-shrink:0;
}

.brand-highlight{
  color:var(--accent);
}

.header-search{
  flex:1;
  max-width:360px;
  margin-left:auto;
}

.header-search form{
  display:flex;
  align-items:center;
  gap:10px;
  background:rgba(27,34,38,0.9);
  border:1px solid var(--border-card);
  border-radius:var(--radius-pill);
  padding:0 18px;
  height:44px;
  transition:var(--transition);
}

.header-search form:focus-within{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(198,242,78,0.15);
}

.header-search i{
  color:var(--text-dim);
  font-size:14px;
}

.header-search input{
  flex:1;
  background:none;
  border:none;
  color:var(--text-main);
  font-size:15px;
  height:42px;
}

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

.menu-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:50%;
  border:1px solid var(--border-card);
  color:var(--text-main);
  font-size:17px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  background:rgba(30,38,43,0.8);
  transition:var(--transition);
}

.menu-toggle:hover{
  border-color:var(--accent);
  color:var(--accent);
}

.search-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:50%;
  border:1px solid var(--border-card);
  color:var(--text-main);
  font-size:15px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  background:rgba(30,38,43,0.8);
  transition:var(--transition);
}

.search-toggle:hover{
  border-color:var(--accent);
  color:var(--accent);
}

/* ===== Channel Nav ===== */
.channel-nav{
  position:sticky;
  top:64px;
  background:rgba(15,18,20,0.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(42,53,58,0.7);
  z-index:999;
}

.channel-nav-inner{
  display:flex;
  align-items:center;
  gap:10px;
  height:48px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}

.channel-nav-inner::-webkit-scrollbar{
  display:none;
}

.channel-tab{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:7px 20px;
  border-radius:var(--radius-pill);
  font-size:14px;
  font-weight:600;
  color:var(--text-sub);
  border:1px solid transparent;
  white-space:nowrap;
  transition:var(--transition);
}

.channel-tab:hover{
  color:var(--text-main);
  border-color:var(--border-card);
  background:rgba(30,38,43,0.6);
}

.channel-tab.active{
  background:var(--accent);
  color:var(--text-invert);
  border-color:var(--accent);
  font-weight:700;
}

/* ===== Mobile Menu ===== */
.mobile-menu{
  display:none;
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  z-index:2000;
  visibility:hidden;
  opacity:0;
  transition:opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu.open{
  visibility:visible;
  opacity:1;
}

.mobile-menu-overlay{
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:rgba(0,0,0,0.65);
  backdrop-filter:blur(4px);
}

.mobile-menu-panel{
  position:absolute;
  top:0;
  right:0;
  width:300px;
  height:100%;
  background:var(--bg-block);
  border-left:1px solid var(--border);
  padding:24px;
  transform:translateX(100%);
  transition:transform 0.35s ease;
  display:flex;
  flex-direction:column;
  gap:16px;
  overflow-y:auto;
}

.mobile-menu.open .mobile-menu-panel{
  transform:translateX(0);
}

.mobile-menu-brand{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:8px;
}

.mobile-menu-close{
  width:36px;
  height:36px;
  border-radius:50%;
  border:1px solid var(--border-card);
  color:var(--text-main);
  font-size:14px;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(30,38,43,0.8);
}

.mobile-menu-nav{
  display:flex;
  flex-direction:column;
  gap:6px;
}

.mobile-menu-nav a{
  padding:12px 16px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  color:var(--text-sub);
  background:rgba(30,38,43,0.5);
  border:1px solid transparent;
  transition:var(--transition);
}

.mobile-menu-nav a:hover,
.mobile-menu-nav a.active{
  color:var(--text-invert);
  background:var(--accent);
  border-color:var(--accent);
}

.mobile-menu-search form{
  display:flex;
  align-items:center;
  gap:10px;
  background:var(--bg-card);
  border:1px solid var(--border-card);
  border-radius:var(--radius-pill);
  padding:0 16px;
  height:46px;
}

.mobile-menu-search input{
  flex:1;
  background:none;
  border:none;
  color:var(--text-main);
  font-size:15px;
  height:44px;
}

.mobile-menu-cta{
  margin-top:auto;
  display:flex;
  flex-direction:column;
  gap:10px;
}

.mobile-menu-cta .btn{
  width:100%;
}

/* ===== Page Banner ===== */
.page-banner{
  position:relative;
  min-height:420px;
  display:flex;
  align-items:center;
  padding:80px 0 60px;
  overflow:hidden;
  background:var(--bg);
}

.banner-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}

.banner-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(to top, rgba(15,18,20,0.96) 0%, rgba(15,18,20,0.75) 40%, rgba(15,18,20,0.45) 100%);
}

.banner-content{
  position:relative;
  z-index:2;
  max-width:760px;
}

.banner-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 16px;
  border-radius:var(--radius-pill);
  background:rgba(198,242,78,0.12);
  border:1px solid rgba(198,242,78,0.3);
  color:var(--accent);
  font-size:13px;
  font-weight:600;
  margin-bottom:18px;
}

.page-banner h1{
  font-size:44px;
  font-weight:800;
  line-height:1.25;
  letter-spacing:-0.5px;
  margin-bottom:16px;
  color:var(--text-main);
}

.page-banner h1 .highlight{
  color:var(--accent);
  font-weight:700;
}

.banner-sub{
  font-size:17px;
  line-height:1.8;
  color:var(--text-sub);
  max-width:640px;
  margin-bottom:30px;
}

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

/* ===== Category Description Bar ===== */
.category-desc{
  background:var(--bg-block);
  border-bottom:1px solid var(--border);
}

.category-desc .container{
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding-top:28px;
  padding-bottom:28px;
}

.category-desc p{
  font-size:15px;
  color:var(--text-sub);
  max-width:760px;
  position:relative;
  padding-left:20px;
}

.category-desc p::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:4px;
  height:24px;
  background:var(--accent);
  border-radius:2px;
}

/* ===== Stats Bar ===== */
.stats-bar{
  padding:36px 0;
  border-bottom:1px solid var(--border);
  background:var(--bg);
}

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

.stat-item{
  text-align:center;
  padding:16px;
  border-left:1px solid var(--border);
}

.stat-item:first-child{
  border-left:none;
}

.stat-item strong{
  display:block;
  font-family:var(--font-en);
  font-size:34px;
  font-weight:800;
  color:var(--accent);
  line-height:1.2;
}

.stat-item span{
  font-size:14px;
  color:var(--text-sub);
  display:block;
  margin-top:4px;
}

/* ===== Section Head ===== */
.section-head{
  margin-bottom:36px;
}

.section-head h2{
  font-size:32px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:-0.3px;
  margin-bottom:8px;
  position:relative;
}

.section-head h2::after{
  content:"";
  display:block;
  width:44px;
  height:4px;
  border-radius:2px;
  background:var(--accent);
  margin-top:12px;
}

.section-head p{
  font-size:15px;
  color:var(--text-sub);
  max-width:560px;
}

.swipe-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:28px;
}

.swipe-head .section-head-h2-wrap{
  flex:1;
}

.view-all{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--accent);
  white-space:nowrap;
  padding-bottom:6px;
}

/* ===== Content Grid Cards ===== */
.content-section{
  padding:80px 0;
  background:var(--bg);
}

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

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

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

.card-cover{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
}

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

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

.card-cover::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top, rgba(15,18,20,0.6), transparent 55%);
}

.card-badge{
  position:absolute;
  top:14px;
  left:14px;
  z-index:2;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  background:rgba(15,18,20,0.78);
  border:1px solid rgba(198,242,78,0.35);
  color:var(--accent);
  font-size:12px;
  font-weight:600;
  backdrop-filter:blur(6px);
}

.card-body{
  padding:18px 20px 20px;
  display:flex;
  flex-direction:column;
  flex:1;
}

.card-body h3{
  font-size:18px;
  font-weight:700;
  margin-bottom:8px;
  line-height:1.4;
}

.card-body p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
  margin-bottom:16px;
  flex:1;
}

.card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:14px;
  border-top:1px solid rgba(42,53,58,0.6);
}

.card-meta span{
  font-size:12px;
  color:var(--text-dim);
  display:inline-flex;
  align-items:center;
  gap:6px;
}

/* ===== Scenario ===== */
.scenario-section{
  padding:80px 0;
  background:var(--bg-block);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}

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

.scenario-card{
  background:var(--bg-card);
  border:1px solid var(--border-card);
  border-radius:var(--radius);
  padding:28px 24px;
  transition:var(--transition);
}

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

.scenario-card i{
  width:48px;
  height:48px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  background:rgba(198,242,78,0.12);
  border:1px solid rgba(198,242,78,0.25);
  color:var(--accent);
  font-size:20px;
  margin-bottom:18px;
}

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

.scenario-card p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
}

/* ===== Process ===== */
.process-section{
  padding:80px 0;
  background:var(--bg);
}

.process-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:process;
}

.process-item{
  position:relative;
  padding:28px 24px;
  background:var(--bg-card-2);
  border:1px solid var(--border-card);
  border-radius:var(--radius);
  transition:var(--transition);
}

.process-item:hover{
  border-color:var(--accent);
  box-shadow:var(--shadow-hover);
}

.process-num{
  display:inline-block;
  font-family:var(--font-en);
  font-size:15px;
  font-weight:800;
  color:var(--copper);
  letter-spacing:2px;
  margin-bottom:14px;
  padding:4px 12px;
  border-radius:6px;
  background:rgba(201,160,99,0.1);
  border:1px solid rgba(201,160,99,0.25);
}

.process-item h3{
  font-size:17px;
  font-weight:700;
  margin-bottom:8px;
}

.process-item p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
}

.process-item::before{
  content:"";
  position:absolute;
  top:50%;
  right:-24px;
  width:24px;
  height:1px;
  background:linear-gradient(to right, var(--border-card), transparent);
}

.process-item:last-child::before{
  display:none;
}

/* ===== Swipe Section ===== */
.swipe-section{
  padding:80px 0 40px;
  background:var(--bg-block);
  border-top:1px solid var(--border);
}

.swipe-track{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:16px;
  scrollbar-width:thin;
  scrollbar-color:var(--accent) var(--border-card);
}

.swipe-track::-webkit-scrollbar{
  height:6px;
}

.swipe-track::-webkit-scrollbar-track{
  background:var(--border-card);
  border-radius:3px;
}

.swipe-track::-webkit-scrollbar-thumb{
  background:var(--accent);
  border-radius:3px;
}

.swipe-card{
  flex:0 0 280px;
  scroll-snap-align:start;
  background:var(--bg-card);
  border:1px solid var(--border-card);
  border-radius:var(--radius);
  overflow:hidden;
  transition:var(--transition);
}

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

.swipe-card .card-cover{
  aspect-ratio:16/10;
}

.swipe-card .card-body{
  padding:16px 18px 18px;
}

.swipe-card .card-body h3{
  font-size:16px;
  font-weight:700;
  margin-bottom:6px;
}

.swipe-card .card-body p{
  font-size:13px;
  color:var(--text-sub);
  line-height:1.6;
  margin-bottom:10px;
}

.swipe-hint{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  color:var(--text-dim);
  margin-top:4px;
}

/* ===== FAQ ===== */
.faq-section{
  padding:80px 0;
  background:var(--bg);
}

.faq-list{
  max-width:820px;
  background:var(--bg-block);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
}

.faq-item{
  border-bottom:1px solid var(--border);
}

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

.faq-question{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  background:transparent;
  color:var(--text-main);
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:var(--transition);
}

.faq-question:hover{
  color:var(--accent);
}

.faq-question i{
  font-size:15px;
  color:var(--accent);
  transition:transform 0.3s ease;
  flex-shrink:0;
}

.faq-item.active .faq-question i{
  transform:rotate(45deg);
}

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

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

.faq-answer p{
  padding:0 24px 22px;
  font-size:14px;
  color:var(--text-sub);
  line-height:1.8;
}

/* ===== CTA ===== */
.cta-section{
  position:relative;
  padding:90px 0;
  background:var(--bg-block);
  border-top:1px solid var(--border);
  overflow:hidden;
  text-align:center;
}

.cta-section::before{
  content:"";
  position:absolute;
  inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:0.22;
}

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

.cta-section h2{
  font-size:36px;
  font-weight:800;
  margin-bottom:14px;
  line-height:1.3;
}

.cta-section p{
  font-size:16px;
  color:var(--text-sub);
  max-width:600px;
  margin:0 auto 32px;
}

.cta-section .btn{
  box-shadow:0 0 30px rgba(198,242,78,0.15);
}

/* ===== Back Nav ===== */
.back-nav{
  padding:48px 0;
  background:var(--bg);
  border-top:1px solid var(--border);
}

.back-nav .container{
  display:flex;
  justify-content:center;
  gap:16px;
  flex-wrap:wrap;
}

/* ===== Footer ===== */
.site-footer{
  background:#0B0E10;
  border-top:1px solid var(--border);
  padding-top:56px;
}

.footer-top{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
}

.footer-brand{
  display:inline-flex;
  align-items:baseline;
  font-family:var(--font-en);
  font-size:22px;
  font-weight:800;
  color:var(--text-main);
}

.footer-desc{
  font-size:14px;
  color:var(--text-dim);
  margin-top:14px;
  max-width:320px;
  line-height:1.8;
}

.footer-social{
  display:flex;
  gap:10px;
  margin-top:18px;
}

.footer-social a{
  width:38px;
  height:38px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid var(--border-card);
  color:var(--text-sub);
  font-size:15px;
  transition:var(--transition);
}

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

.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:16px;
}

.footer-col a{
  display:block;
  font-size:14px;
  color:var(--text-sub);
  padding:5px 0;
  transition:var(--transition);
}

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

.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 0;
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--text-dim);
}

/* ===== Responsive ===== */
@media (max-width:1199px){
  .content-grid{
    grid-template-columns:repeat(3,1fr);
  }
  .scenario-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .process-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .process-item::before{
    display:none;
  }
  .footer-top{
    grid-template-columns:1fr 1fr;
  }
}

@media (max-width:767px){
  .container{
    padding:0 16px;
  }

  .header-inner{
    height:60px;
    gap:10px;
  }

  .brand-logo{
    font-size:19px;
  }

  .header-search{
    display:none;
  }

  .search-toggle{
    display:flex;
  }

  .menu-toggle{
    display:flex;
  }

  .header-actions .btn{
    padding:8px 16px;
    font-size:13px;
  }

  .channel-nav{
    top:60px;
  }

  .channel-nav-inner{
    height:46px;
    gap:8px;
  }

  .channel-tab{
    padding:6px 16px;
    font-size:13px;
  }

  .page-banner{
    min-height:auto;
    padding:60px 0 48px;
  }

  .page-banner h1{
    font-size:30px;
    line-height:1.3;
  }

  .banner-sub{
    font-size:15px;
  }

  .banner-actions{
    flex-direction:column;
    align-items:flex-start;
  }

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

  .category-desc p{
    text-align:left;
    font-size:14px;
  }

  .stats-grid{
    grid-template-columns:repeat(2,1fr);
    gap:12px;
  }

  .stat-item{
    border-left:none;
    border-bottom:1px solid var(--border);
    padding:12px;
  }

  .stat-item strong{
    font-size:28px;
  }

  .content-section,
  .scenario-section,
  .process-section,
  .swipe-section,
  .faq-section,
  .cta-section{
    padding:56px 0;
  }

  .section-head h2{
    font-size:24px;
  }

  .content-grid{
    grid-template-columns:repeat(2,1fr);
    gap:14px;
  }

  .card-body{
    padding:14px 14px 16px;
  }

  .card-body h3{
    font-size:15px;
  }

  .card-body p{
    font-size:13px;
    line-height:1.6;
  }

  .card-badge{
    font-size:11px;
    padding:3px 10px;
  }

  .scenario-grid{
    grid-template-columns:1fr;
    gap:14px;
  }

  .process-grid{
    grid-template-columns:1fr;
    gap:14px;
  }

  .swipe-card{
    flex-basis:220px;
  }

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

  .faq-answer p{
    padding:0 18px 18px;
    font-size:14px;
  }

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

  .cta-section p{
    font-size:15px;
  }

  .cta-section .btn{
    width:100%;
  }

  .back-nav .container{
    flex-direction:column;
    align-items:stretch;
  }

  .back-nav .btn{
    width:100%;
  }

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

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

  .swipe-head{
    flex-direction:column;
    align-items:flex-start;
    gap:8px;
  }
}

@media (max-width:520px){
  .content-grid{
    grid-template-columns:1fr;
  }

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

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