/* roulang page: index */
:root {
    --bg-body: #0A0E0D;
    --bg-section: #101614;
    --bg-card: #161D1B;
    --bg-card-hover: #1B2421;
    --bg-footer: #0C110F;
    --accent: #00E89C;
    --accent-hover: #00FFAB;
    --accent-soft: rgba(0,232,156,0.12);
    --warm: #FFB25E;
    --warm-soft: rgba(255,178,94,0.15);
    --text-main: #F4F7F6;
    --text-muted: #8A9B94;
    --border: rgba(255,255,255,0.08);
    --border-hover: rgba(0,232,156,0.4);
    --shadow: rgba(0,0,0,0.5);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --container: 1280px;
    --spacer: 96px;
    --spacer-md: 64px;
    --spacer-sm: 40px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", -apple-system, sans-serif;
    background: var(--bg-body);
    color: var(--text-main);
    line-height: 1.75;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* header nav */
.site-header {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
    background: rgba(10,14,13,0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
.nav-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 68px; gap: 24px;
}
.logo {
    display: flex; align-items: center; gap: 10px;
    font-weight: 800; font-size: 20px; letter-spacing: -0.02em;
    color: var(--text-main); flex-shrink: 0;
}
.logo-mark {
    width: 32px; height: 32px; border-radius: 9px;
    background: var(--accent);
    display: flex; align-items: center; justify-content: center;
    color: #0A0E0D; font-size: 16px; font-weight: 900;
    position: relative;
}
.logo-mark::after {
    content: ''; position: absolute; width: 8px; height: 8px;
    background: var(--warm); border-radius: 50%;
    top: 4px; right: 4px;
}
.nav-links {
    display: flex; align-items: center; gap: 6px; list-style: none;
}
.nav-links a {
    display: inline-block; padding: 8px 16px;
    font-size: 14px; font-weight: 500; color: var(--text-muted);
    border-radius: 999px; transition: all .25s ease;
}
.nav-links a:hover { color: var(--text-main); background: rgba(255,255,255,0.06); }
.nav-links a.active { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.nav-actions { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.search-box {
    display: flex; align-items: center; gap: 8px;
    height: 40px; padding: 0 12px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 10px;
    min-width: 220px; color: var(--text-muted);
    transition: border-color .25s, box-shadow .25s;
    cursor: text;
}
.search-box:hover, .search-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0,232,156,0.25);
}
.search-box i { font-size: 13px; color: var(--text-muted); }
.search-box span { font-size: 13px; flex: 1; color: var(--text-muted); }
.search-box .kbd {
    font-size: 11px; padding: 2px 6px; border-radius: 4px;
    background: rgba(255,255,255,0.12); color: var(--text-muted);
    font-family: "Inter", sans-serif; letter-spacing: 1px;
}
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--accent); color: #0A0E0D;
    border: none; padding: 10px 22px; border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 700; cursor: pointer;
    transition: all .28s ease;
}
.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,232,156,0.25);
}
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible, .btn-secondary:focus-visible, a:focus-visible {
    outline: 2px solid var(--accent); outline-offset: 3px;
}
.btn-secondary {
    display: inline-flex; align-items: center; gap: 8px;
    background: transparent; color: var(--text-main);
    border: 1px solid rgba(255,255,255,0.16);
    padding: 10px 22px; border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 500; cursor: pointer; transition: all .25s ease;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-text {
    display: inline-flex; align-items: center; gap: 6px;
    background: none; border: none; color: var(--text-main);
    font-size: 14px; cursor: pointer; transition: all .25s ease;
    padding: 4px 0;
}
.btn-text i { transition: transform .25s ease; }
.btn-text:hover { color: var(--accent); }
.btn-text:hover i { transform: translateX(4px); }
.nav-toggle {
    display: none; background: none; border: none; color: var(--text-main);
    font-size: 22px; cursor: pointer; padding: 4px;
}
.mobile-menu {
    display: none; position: fixed; top: 68px; left: 0; width: 100%;
    background: rgba(10,14,13,0.98); backdrop-filter: blur(16px);
    z-index: 99; padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
}
.mobile-menu.open { display: block; }
.mobile-menu a {
    display: block; padding: 14px 8px; font-size: 16px;
    color: var(--text-main); border-bottom: 1px solid var(--border);
}
.mobile-menu a.active { color: var(--accent); }

/* hero */
.hero {
    position: relative; min-height: 92vh;
    display: flex; align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}
.hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover; background-position: center 20%;
    z-index: 0;
}
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(90deg, rgba(10,14,13,0.96) 20%, rgba(10,14,13,0.7) 50%, rgba(10,14,13,0.35) 100%);
    z-index: 1;
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.hero-tag {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 14px; border-radius: 999px;
    background: var(--accent-soft); border: 1px solid rgba(0,232,156,0.3);
    color: var(--accent); font-size: 13px; font-weight: 500;
    margin-bottom: 24px;
}
.hero-tag .dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: .5; transform: scale(0.8); }
}
.hero h1 {
    font-size: clamp(40px, 6.5vw, 76px);
    font-weight: 800; line-height: 1.1; letter-spacing: -0.03em;
    margin-bottom: 20px;
}
.hero h1 .highlight { color: var(--accent); }
.hero-desc {
    font-size: 17px; color: var(--text-muted);
    max-width: 560px; line-height: 1.8; margin-bottom: 36px;
}
.hero-ctas { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.hero-stats {
    display: flex; gap: 32px; margin-top: 56px; flex-wrap: wrap;
}
.hero-stat { display: flex; flex-direction: column; }
.hero-stat .num {
    font-family: "Inter", "SF Pro Display", sans-serif;
    font-size: 28px; font-weight: 800; color: var(--accent); line-height: 1.2;
}
.hero-stat .label { font-size: 13px; color: var(--text-muted); margin-top: 2px; }

/* section base */
.section { padding: var(--spacer) 0; }
.section-alt { background: var(--bg-section); }
.section-head {
    display: flex; align-items: flex-end; justify-content: space-between;
    margin-bottom: 40px; gap: 16px;
}
.section-title {
    font-size: 32px; font-weight: 700; line-height: 1.3;
    letter-spacing: -0.01em;
}
.section-subtitle { color: var(--text-muted); font-size: 15px; margin-top: 8px; }

/* stats band */
.stats-band {
    background: var(--bg-footer);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
    padding: var(--spacer-md) 0;
}
.stat-card {
    text-align: center; padding: 28px 16px;
    border: 1px solid var(--border); border-radius: var(--radius-md);
    background: rgba(255,255,255,0.02);
    transition: all .3s ease;
}
.stat-card:hover { border-color: var(--border-hover); background: rgba(0,232,156,0.04); }
.stat-card .num {
    font-family: "Inter", sans-serif;
    font-size: 42px; font-weight: 800; color: var(--accent); line-height: 1.1;
}
.stat-card .label { color: var(--text-muted); font-size: 13px; margin-top: 8px; }

/* horizontal strip */
.strip-wrap { overflow-x: auto; padding-bottom: 16px; scrollbar-width: thin; scrollbar-color: rgba(255,255,255,0.15) transparent; }
.strip-wrap::-webkit-scrollbar { height: 4px; }
.strip-wrap::-webkit-scrollbar-track { background: transparent; }
.strip-wrap::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }
.strip-track { display: flex; gap: 16px; min-width: max-content; }
.strip-card {
    width: 280px; flex-shrink: 0;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); overflow: hidden;
    transition: all .3s ease;
}
.strip-card:hover { transform: translateY(-4px); border-color: var(--border-hover); background: var(--bg-card-hover); }
.strip-card .cover {
    position: relative; width: 100%; height: 175px; overflow: hidden;
}
.strip-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.strip-card:hover .cover img { transform: scale(1.05); }
.strip-card .cover-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(10,14,13,0.5); opacity: 0; display: flex;
    align-items: center; justify-content: center; transition: opacity .3s;
}
.strip-card:hover .cover-overlay { opacity: 1; }
.strip-card .play-btn {
    width: 48px; height: 48px; border-radius: 50%;
    background: var(--accent); color: #0A0E0D;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
}
.strip-card .info { padding: 16px; }
.strip-card .info h4 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }

/* badges and tags */
.tag {
    display: inline-block; padding: 4px 12px; border-radius: 999px;
    font-size: 12px; font-weight: 600; letter-spacing: 0.03em;
    background: var(--warm-soft); color: var(--warm);
}
.tag-green { background: var(--accent-soft); color: var(--accent); }
.hot-badge {
    position: absolute; top: 12px; left: 12px; z-index: 2;
    background: var(--warm); color: #1a1a1a;
    font-size: 12px; font-weight: 700; padding: 4px 10px;
    border-radius: 6px; letter-spacing: 0.03em;
}

/* hot recommend */
.hot-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 16px;
}
.hot-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); overflow: hidden;
    transition: all .3s ease; position: relative;
}
.hot-card:hover { border-color: var(--border-hover); background: var(--bg-card-hover); transform: translateY(-3px); }
.hot-card .cover { position: relative; overflow: hidden; }
.hot-card .cover img { width: 100%; object-fit: cover; transition: transform .4s ease; }
.hot-card:hover .cover img { transform: scale(1.04); }
.hot-card .info { padding: 16px 20px 20px; }
.hot-card .info h4 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.hot-card .info p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.hot-card.featured { grid-row: span 2; }
.hot-card.featured .cover { height: 100%; }
.hot-card.featured .cover img { height: 100%; min-height: 380px; }
.hot-card.featured .info { position: absolute; bottom: 0; left: 0; right: 0; background: linear-gradient(transparent, rgba(10,14,13,0.92)); padding: 60px 24px 24px; }
.hot-card.featured .info h4 { font-size: 22px; }
.hot-card.standard .cover { height: 140px; }

/* collection grid */
.collection-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.collection-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); overflow: hidden;
    transition: all .3s ease;
}
.collection-card:hover { border-color: var(--border-hover); background: var(--bg-card-hover); transform: translateY(-3px); }
.collection-card .cover { position: relative; height: 140px; overflow: hidden; }
.collection-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.collection-card:hover .cover img { transform: scale(1.05); }
.collection-card .info { padding: 16px; }
.collection-card .info .meta { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.collection-card .info h4 { font-size: 16px; font-weight: 600; line-height: 1.4; }

/* news section */
.news-layout { display: grid; grid-template-columns: 2fr 1fr; gap: 32px; align-items: start; }
.news-list { display: flex; flex-direction: column; gap: 12px; }
.news-item {
    display: block; padding: 20px;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all .25s ease;
}
.news-item:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }
.news-item-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.news-item .news-title { font-size: 17px; font-weight: 600; line-height: 1.4; }
.news-item .news-excerpt { font-size: 13px; color: var(--text-muted); margin-top: 6px; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-item-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 12px; }
.news-date { font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.news-sidebar .side-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-md); padding: 24px; margin-bottom: 16px;
}
.news-sidebar .side-card h4 { font-size: 16px; font-weight: 600; margin-bottom: 16px; }
.side-list { list-style: none; }
.side-list li { padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
.side-list li:last-child { border-bottom: none; }
.side-list a { font-size: 14px; color: var(--text-muted); transition: color .2s; display: block; }
.side-list a:hover { color: var(--accent); }
.side-thumb { border-radius: var(--radius-md); overflow: hidden; margin-bottom: 16px; }
.side-thumb img { width: 100%; height: 120px; object-fit: cover; }

/* empty state */
.empty-state {
    border: 1px dashed rgba(255,255,255,0.2);
    border-radius: var(--radius-lg);
    padding: 60px 24px; text-align: center; color: var(--text-muted);
}
.empty-state i { font-size: 36px; margin-bottom: 16px; color: rgba(255,255,255,0.2); }
.empty-state .empty-title { font-size: 18px; font-weight: 600; color: var(--text-main); margin-bottom: 8px; }
.empty-state .empty-desc { font-size: 14px; margin-bottom: 20px; }

/* FAQ */
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
    background: #111715; border: 1px solid var(--border);
    border-radius: var(--radius-md); padding: 20px;
    transition: border-color .25s;
}
.faq-item:hover { border-color: rgba(255,255,255,0.18); }
.faq-item.open { border-color: rgba(0,232,156,0.3); }
.faq-q {
    display: flex; align-items: center; justify-content: space-between;
    cursor: pointer; font-size: 16px; font-weight: 600;
    user-select: none;
}
.faq-q i { transition: transform .3s; color: var(--text-muted); }
.faq-item.open .faq-q i { transform: rotate(180deg); color: var(--accent); }
.faq-a {
    max-height: 0; overflow: hidden; transition: max-height .35s ease;
    color: var(--text-muted); font-size: 14px; line-height: 1.8;
}
.faq-item.open .faq-a { max-height: 300px; padding-top: 12px; }

/* CTA */
.cta-section {
    padding: 100px 0;
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover; background-position: center;
    position: relative;
}
.cta-section::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(10,14,13,0.82);
}
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 640px; margin: 0 auto; }
.cta-inner h2 { font-size: 38px; font-weight: 800; margin-bottom: 16px; line-height: 1.3; }
.cta-inner p { color: var(--text-muted); font-size: 16px; margin-bottom: 32px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* footer */
.site-footer { background: var(--bg-footer); border-top: 1px solid var(--border); padding-top: 64px; }
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
    padding-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { color: var(--text-muted); font-size: 13px; max-width: 260px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
    width: 36px; height: 36px; border-radius: 8px;
    border: 1px solid var(--border); display: flex;
    align-items: center; justify-content: center;
    color: var(--text-muted); transition: all .25s ease;
}
.footer-social a:hover { color: var(--accent); border-color: var(--accent); }
.footer-col h4 { font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 13px; color: var(--text-muted); transition: color .2s; }
.footer-col ul a:hover { color: var(--accent); }
.footer-bottom {
    border-top: 1px solid var(--border); padding: 24px 0;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 12px;
    color: var(--text-muted); font-size: 13px;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

/* responsive */
@media (max-width: 1199px) {
    .hot-grid { grid-template-columns: repeat(3, 1fr); }
    .hot-card.featured { grid-column: span 3; grid-row: auto; }
    .hot-card.featured .cover img { min-height: 260px; }
    .collection-grid { grid-template-columns: repeat(3, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 991px) {
    .nav-links { display: none; }
    .nav-toggle { display: block; }
    .search-box { display: none; }
    .nav-actions .btn-primary { display: none; }
    .news-layout { grid-template-columns: 1fr; }
    .collection-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
    :root { --spacer: 48px; --spacer-md: 32px; }
    .container { padding: 0 16px; }
    .hero { min-height: 80vh; padding: 100px 0 60px; }
    .hero h1 { font-size: 34px; line-height: 1.2; }
    .hero-desc { font-size: 15px; }
    .hero-stats { gap: 20px; margin-top: 36px; }
    .hero-stat .num { font-size: 22px; }
    .section-title { font-size: 24px; }
    .section-head { flex-direction: column; align-items: flex-start; }
    .hot-grid { grid-template-columns: 1fr; }
    .hot-card.featured { grid-column: auto; }
    .collection-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .strip-card { width: 240px; }
    .cta-inner h2 { font-size: 26px; }
}

/* roulang page: category1 */
:root {
  --bg: #0A0E0D;
  --bg-alt: #101614;
  --bg-alt-2: #111715;
  --card: #161D1B;
  --card-hover: #1B2421;
  --primary: #00E89C;
  --primary-hover: #00FFAB;
  --accent: #FFB25E;
  --text: #F4F7F6;
  --text-muted: #8A9B94;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.16);
  --border-primary: rgba(0,232,156,0.4);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow: rgba(0,0,0,0.5);
  --container: 1280px;
  --space-lg: 96px;
  --space-md: 64px;
  --space-sm: 40px;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .3s ease; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-lg) 0; }
.section.alt { background: var(--bg-alt); }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,14,13,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 12px; font-size: 22px; font-weight: 800; letter-spacing: 0.01em; white-space: nowrap; }
.logo-mark { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 10px; background: var(--primary); color: #0A0E0D; font-weight: 900; font-size: 20px; font-style: italic; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { font-size: 15px; font-weight: 500; color: var(--text-muted); position: relative; padding: 6px 0; transition: color .3s ease; }
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 100%; height: 2px; background: var(--primary); border-radius: 2px; }
.nav-actions { display: flex; align-items: center; gap: 16px; }
.search-box { display: flex; align-items: center; gap: 8px; height: 40px; padding: 0 12px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: 10px; color: var(--text-muted); font-size: 13px; cursor: pointer; transition: border-color .3s ease, box-shadow .3s ease; min-width: 200px; }
.search-box:hover, .search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,232,156,0.25); color: var(--text); }
.search-box .kbd { margin-left: auto; font-size: 11px; font-weight: 600; background: rgba(255,255,255,0.1); padding: 2px 6px; border-radius: 4px; white-space: nowrap; }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; background: var(--primary); color: #0A0E0D; font-weight: 600; font-size: 15px; padding: 11px 24px; border-radius: var(--radius-sm); transition: background .3s ease, transform .3s ease, box-shadow .3s ease; white-space: nowrap; }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,232,156,0.25); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible, .btn-ghost:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-ghost { display: inline-flex; align-items: center; justify-content: center; background: transparent; border: 1px solid rgba(255,255,255,0.16); color: var(--text); font-weight: 600; font-size: 15px; padding: 10px 24px; border-radius: var(--radius-sm); transition: border-color .3s ease, color .3s ease, transform .3s ease; white-space: nowrap; }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.nav-toggle { display: none; font-size: 20px; color: var(--text); width: 40px; height: 40px; align-items: center; justify-content: center; border-radius: 8px; border: 1px solid var(--border); background: rgba(255,255,255,0.04); }

/* ===== Hero ===== */
.page-hero { position: relative; padding: 180px 0 100px; background-image: url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; }
.page-hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10,14,13,0.96) 0%, rgba(10,14,13,0.75) 55%, rgba(10,14,13,0.45) 100%); }
.page-hero::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 0%, rgba(10,14,13,0.6) 100%); }
.hero-content { position: relative; z-index: 2; max-width: 780px; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(255,178,94,0.14); border: 1px solid rgba(255,178,94,0.3); color: var(--accent); font-size: 13px; font-weight: 600; letter-spacing: 0.05em; padding: 6px 14px; border-radius: 999px; margin-bottom: 24px; }
.hero-badge i { font-size: 12px; }
.hero-content h1 { font-size: clamp(40px, 6vw, 64px); font-weight: 800; line-height: 1.12; letter-spacing: -0.02em; margin-bottom: 16px; }
.hero-content h1 .text-accent { color: var(--primary); }
.hero-sub { font-size: clamp(18px, 2.4vw, 26px); font-weight: 600; color: var(--text); margin-bottom: 14px; line-height: 1.4; }
.hero-desc { font-size: 16px; color: var(--text-muted); max-width: 620px; margin-bottom: 32px; }
.hero-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-actions .btn-arrow { display: inline-flex; align-items: center; gap: 8px; background: none; border: none; color: var(--text); font-size: 15px; font-weight: 600; padding: 8px 4px; transition: color .3s ease; }
.hero-actions .btn-arrow i { transition: transform .3s ease; }
.hero-actions .btn-arrow:hover { color: var(--primary); }
.hero-actions .btn-arrow:hover i { transform: translateX(4px); }
.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
.stat-item { display: flex; flex-direction: column; }
.stat-item strong { font-size: 32px; font-weight: 800; color: var(--primary); font-family: "Inter", "SF Pro Display", sans-serif; line-height: 1.2; }
.stat-item span { font-size: 13px; color: var(--text-muted); margin-top: 4px; letter-spacing: 0.03em; }

/* ===== Section Head ===== */
.section-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 40px; gap: 24px; }
.section-head.centered { flex-direction: column; align-items: center; text-align: center; gap: 8px; }
.section-title { font-size: clamp(26px, 3.2vw, 36px); font-weight: 700; line-height: 1.3; letter-spacing: -0.01em; }
.section-head.centered .section-title { font-size: clamp(26px, 3.2vw, 34px); }
.section-head p.subtitle { color: var(--text-muted); font-size: 15px; max-width: 480px; }
.section-more { display: inline-flex; align-items: center; gap: 8px; color: var(--text-muted); font-size: 14px; font-weight: 600; transition: color .3s ease; }
.section-more i { transition: transform .3s ease; }
.section-more:hover { color: var(--primary); }
.section-more:hover i { transform: translateX(4px); }

/* ===== Guide Cards ===== */
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.guide-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: background .3s ease, border-color .3s ease, transform .3s ease, box-shadow .3s ease; }
.guide-card:hover { background: var(--card-hover); border-color: var(--border-primary); transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.4); }
.card-cover { position: relative; overflow: hidden; aspect-ratio: 16 / 10; background: var(--bg-alt); }
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.guide-card:hover .card-cover img { transform: scale(1.05); }
.card-cover::after { content: ''; position: absolute; inset: 0; background: rgba(10,14,13,0.25); opacity: 0; transition: opacity .4s ease; }
.guide-card:hover .card-cover::after { opacity: 1; }
.card-cover .play-btn { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%) scale(0.85); width: 48px; height: 48px; border-radius: 50%; background: rgba(0,232,156,0.9); color: #0A0E0D; display: flex; align-items: center; justify-content: center; font-size: 16px; opacity: 0; transition: opacity .4s ease, transform .4s ease; z-index: 2; }
.guide-card:hover .card-cover .play-btn { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.badge-accent { position: absolute; top: 12px; left: 12px; z-index: 3; background: var(--accent); color: #1A1308; font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px; letter-spacing: 0.04em; }
.card-body { padding: 20px; }
.tag { display: inline-block; background: rgba(0,232,156,0.12); color: var(--primary); font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 999px; margin-bottom: 10px; letter-spacing: 0.03em; }
.card-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.01em; }
.card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ===== Split Content ===== */
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.content-media { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: 0 20px 48px rgba(0,0,0,0.5); }
.content-media::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(0,232,156,0.06) 0%, transparent 50%); pointer-events: none; }
.content-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
.content-text .tag { margin-bottom: 14px; }
.content-text h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 700; line-height: 1.3; margin-bottom: 18px; letter-spacing: -0.01em; }
.content-text p { color: var(--text-muted); font-size: 15px; margin-bottom: 16px; line-height: 1.8; }
.feature-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.feature-list li { display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 600; color: var(--text); background: rgba(255,255,255,0.03); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; transition: border-color .3s ease, background .3s ease; }
.feature-list li:hover { border-color: var(--border-primary); background: rgba(0,232,156,0.06); }
.feature-list i { color: var(--primary); font-size: 15px; flex-shrink: 0; }

/* ===== Steps ===== */
.steps-section { background: var(--bg-alt); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 40px; }
.step-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 28px 24px; position: relative; transition: background .3s ease, border-color .3s ease, transform .3s ease; }
.step-item:hover { background: var(--card-hover); border-color: var(--border-primary); transform: translateY(-4px); }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 12px; background: rgba(0,232,156,0.12); color: var(--primary); font-size: 18px; font-weight: 800; font-family: "Inter", "SF Pro Display", sans-serif; margin-bottom: 16px; }
.step-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.step-item p { font-size: 14px; color: var(--text-muted); line-height: 1.65; }

/* ===== Service ===== */
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 32px 24px; text-align: center; transition: background .3s ease, border-color .3s ease, transform .3s ease; }
.service-card:hover { background: var(--card-hover); border-color: var(--border-primary); transform: translateY(-4px); }
.service-card i { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; border-radius: 16px; font-size: 22px; background: rgba(0,232,156,0.12); color: var(--primary); margin-bottom: 18px; }
.service-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.service-card p { font-size: 14px; color: var(--text-muted); line-height: 1.65; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-alt); }
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: var(--bg-alt-2); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: border-color .3s ease; }
.faq-item:hover { border-color: var(--border-strong); }
.faq-question { display: flex; align-items: center; gap: 16px; width: 100%; padding: 20px 24px; background: none; border: none; text-align: left; font-size: 16px; font-weight: 600; color: var(--text); cursor: pointer; transition: color .3s ease; }
.faq-question:hover { color: var(--primary); }
.faq-question i { margin-left: auto; transition: transform .3s ease; color: var(--text-muted); font-size: 14px; }
.faq-item[open] .faq-question i { transform: rotate(180deg); }
.faq-question::-webkit-details-marker { display: none; }
.faq-question { list-style: none; }
.faq-answer { padding: 0 24px 22px; color: var(--text-muted); font-size: 15px; line-height: 1.8; }

/* ===== CTA ===== */
.cta-section { position: relative; padding: 100px 0; background-image: url('/assets/images/backpic/back-2.webp'); background-size: cover; background-position: center; text-align: center; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,14,13,0.92) 0%, rgba(10,14,13,0.78) 100%); }
.cta-inner { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
.cta-inner h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; line-height: 1.25; margin-bottom: 14px; letter-spacing: -0.01em; }
.cta-inner p { color: var(--text-muted); font-size: 16px; margin-bottom: 32px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: #0C110F; border-top: 1px solid var(--border); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--text-muted); font-size: 14px; line-height: 1.7; margin-bottom: 20px; max-width: 300px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a { display: flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 8px; background: rgba(255,255,255,0.06); color: var(--text-muted); font-size: 15px; transition: background .3s ease, color .3s ease; }
.footer-social a:hover { background: rgba(0,232,156,0.15); color: var(--primary); }
.footer-col h4 { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: var(--text-muted); font-size: 14px; transition: color .3s ease; }
.footer-col ul a:hover { color: var(--primary); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 24px 0; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 13px; flex-wrap: wrap; }
.footer-bottom a { display: inline-flex; align-items: center; gap: 6px; color: var(--text-muted); font-size: 13px; transition: color .3s ease; }
.footer-bottom a:hover { color: var(--primary); }

/* ===== Focus / accessibility ===== */
a:focus-visible, button:focus-visible, .search-box:focus-visible, .nav-toggle:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.search-box:focus, .btn-primary:focus, .btn-ghost:focus { outline: none; }

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .split-grid { gap: 40px; }
  .search-box { min-width: 160px; }
}
@media (max-width: 1024px) {
  .nav-links { gap: 20px; }
  .search-box span { display: none; }
  .search-box { min-width: 44px; width: 44px; padding: 0; justify-content: center; }
  .search-box .kbd { display: none; }
  .section, .page-hero { padding-left: 0; padding-right: 0; }
}
@media (max-width: 768px) {
  .nav-inner { height: 64px; }
  .nav-links { position: fixed; top: 64px; left: 0; right: 0; background: rgba(10,14,13,0.97); flex-direction: column; align-items: flex-start; padding: 24px; gap: 20px; transform: translateY(-120%); transition: transform .3s ease; border-bottom: 1px solid var(--border); z-index: 99; }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { font-size: 17px; }
  .nav-toggle { display: flex; }
  .page-hero { padding: 140px 0 70px; }
  .hero-content h1 { font-size: clamp(32px, 8vw, 42px); }
  .hero-stats { gap: 24px; }
  .stat-item strong { font-size: 26px; }
  .card-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .split-grid { grid-template-columns: 1fr; gap: 32px; }
  .feature-list { grid-template-columns: 1fr; }
  .section { padding: var(--space-md) 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .section-head.centered { align-items: center; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cta-section { padding: 70px 0; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn-primary, .hero-actions .btn-ghost { width: 100%; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .footer-social { justify-content: flex-start; }
  .service-card { padding: 24px 20px; }
  .faq-question { font-size: 15px; padding: 16px 18px; }
  .faq-answer { padding: 0 18px 18px; font-size: 14px; }
  .stat-item strong { font-size: 24px; }
  .card-body { padding: 16px; }
}

/* roulang page: article */
:root {
    --bg-0: #0A0E0D;
    --bg-1: #101614;
    --bg-2: #111715;
    --card: #161D1B;
    --card-hover: #1B2421;
    --primary: #00E89C;
    --primary-light: #00FFAB;
    --accent: #FFB25E;
    --text-0: #F4F7F6;
    --text-1: #8A9B94;
    --border: rgba(255,255,255,0.08);
    --border-hover: rgba(0,232,156,0.35);
    --shadow: rgba(0,0,0,0.5);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --container: 1280px;
    --space-lg: 96px;
    --space-md: 64px;
    --space-sm: 40px;
    --font-cn: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    --font-en: "Inter", "SF Pro Display", sans-serif;
    --header-h: 72px;
    --transition: 300ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-cn);color:var(--text-0);background:var(--bg-0);line-height:1.75;font-size:15px;overflow-x:hidden}
h1,h2,h3,h4,h5,h6{margin:0;line-height:1.3;font-weight:700}
p{margin:0 0 1em}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{margin:0;padding:0}
input,textarea{font-family:inherit}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(10,14,13,0.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);height:var(--header-h)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;letter-spacing:-0.02em;color:var(--text-0);white-space:nowrap;transition:color var(--transition)}
.logo:hover{color:var(--primary)}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;background:var(--primary);color:#0A0E0D;border-radius:10px;font-size:20px;font-weight:800;font-family:var(--font-en);box-shadow:0 0 22px rgba(0,232,156,0.2)}
.nav-links{display:flex;align-items:center;gap:32px;flex:1;justify-content:center}
.nav-links a{font-size:15px;font-weight:500;color:var(--text-1);position:relative;padding:8px 2px;transition:color var(--transition)}
.nav-links a:hover{color:var(--text-0)}
.nav-links a.active{color:var(--text-0);font-weight:600}
.nav-links a.active::after{content:'';position:absolute;bottom:0;left:0;width:100%;height:2px;background:var(--primary);border-radius:2px}
.nav-actions{display:flex;align-items:center;gap:16px}
.search-box{display:flex;align-items:center;gap:10px;height:40px;padding:0 14px;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);border-radius:10px;cursor:pointer;transition:border-color var(--transition),box-shadow var(--transition);min-width:220px}
.search-box i{color:var(--text-1);font-size:14px}
.search-box span{color:var(--text-1);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}
.kbd{background:rgba(255,255,255,0.1);border:1px solid rgba(255,255,255,0.1);border-radius:6px;font-size:11px;padding:3px 6px;font-family:var(--font-en);color:var(--text-1);white-space:nowrap}
.search-box:hover{border-color:var(--border-hover)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,232,156,0.15)}
.btn-primary{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 24px;background:var(--primary);color:#0A0E0D;font-size:14px;font-weight:600;border-radius:var(--radius-sm);transition:background var(--transition),transform 200ms ease,box-shadow var(--transition);white-space:nowrap}
.btn-primary:hover{background:var(--primary-light);color:#0A0E0D;transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,232,156,0.18)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-primary:focus-visible,.btn-secondary:focus-visible,.btn-text:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(0,232,156,0.4)}
.btn-secondary{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 24px;background:transparent;color:var(--text-0);font-size:14px;font-weight:600;border:1px solid rgba(255,255,255,0.16);border-radius:var(--radius-sm);transition:border-color var(--transition),color var(--transition),transform 200ms ease;white-space:nowrap}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-secondary:active{transform:translateY(0)}
.btn-text{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--primary);padding:6px 2px;transition:color var(--transition)}
.btn-text i{transition:transform 200ms ease}
.btn-text:hover{color:var(--primary-light)}
.btn-text:hover i{transform:translateX(4px)}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;color:var(--text-0);font-size:18px;border:1px solid var(--border);border-radius:8px;cursor:pointer;transition:border-color var(--transition),background var(--transition)}
.nav-toggle:hover{border-color:var(--primary);background:rgba(0,232,156,0.08)}
.reading-progress{position:fixed;top:0;left:0;width:100%;height:3px;z-index:1002;background:transparent}
.reading-progress span{display:block;height:100%;background:var(--primary);width:0;transition:width 0.15s linear}
.article-hero{position:relative;padding:152px 0 72px;background:linear-gradient(180deg,rgba(10,14,13,0.88) 0%,rgba(10,14,13,0.68) 60%,rgba(10,14,13,0.82) 100%),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;border-bottom:1px solid var(--border)}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-1);margin-bottom:32px}
.breadcrumb a{color:var(--text-1);transition:color var(--transition)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:0.5}
.breadcrumb .current{color:var(--text-0);max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:0.06em;margin-bottom:16px;padding:6px 12px;border:1px solid rgba(0,232,156,0.3);border-radius:999px;background:rgba(0,232,156,0.06)}
.article-title{font-size:clamp(32px,4.6vw,54px);font-weight:800;line-height:1.12;letter-spacing:-0.02em;color:var(--text-0);max-width:840px;margin-bottom:24px}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:20px;font-size:13px;color:var(--text-1);margin-bottom:28px}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:8px}
.article-meta .meta-item i{color:var(--primary);font-size:14px}
.article-meta .tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;background:rgba(0,232,156,0.1);border:1px solid rgba(0,232,156,0.25);color:var(--primary);border-radius:999px;font-size:12px;font-weight:500}
.article-summary{margin-top:12px;padding:20px 24px;background:rgba(255,255,255,0.03);border-left:3px solid var(--primary);border-radius:0 var(--radius-md) var(--radius-md) 0;max-width:820px;color:rgba(244,247,246,0.88);line-height:1.8;font-size:15px}
.article-summary strong{color:var(--primary);font-weight:600}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;padding-top:64px;padding-bottom:24px;align-items:start}
.article-main{min-width:0}
.article-body{background:var(--bg-1);border:1px solid var(--border);border-radius:var(--radius-lg);padding:48px 56px;margin-bottom:40px}
.article-body h2{font-size:28px;margin:48px 0 16px;color:var(--text-0);line-height:1.3;padding-top:8px}
.article-body h2:first-child{margin-top:0}
.article-body h2::before{content:'';display:inline-block;width:4px;height:0.88em;background:var(--primary);border-radius:4px;margin-right:12px;vertical-align:-0.05em}
.article-body h3{font-size:22px;margin:32px 0 12px;color:var(--text-0)}
.article-body p{margin-bottom:24px;line-height:1.85;color:rgba(244,247,246,0.92)}
.article-body blockquote{margin:24px 0;padding:20px 24px;background:var(--card);border-left:3px solid var(--primary);border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--text-0);font-size:16px;line-height:1.75}
.article-body blockquote p{margin-bottom:0}
.article-body img{border-radius:var(--radius-lg);margin:32px auto;max-width:100%;height:auto;box-shadow:0 20px 50px var(--shadow)}
.article-body figure{margin:32px 0;text-align:center}
.article-body figcaption{font-size:13px;color:var(--text-1);margin-top:12px;text-align:center}
.article-body ul,.article-body ol{margin:24px 0;padding-left:24px;color:rgba(244,247,246,0.92);line-height:1.85}
.article-body li{margin-bottom:8px}
.article-body a{color:var(--primary);border-bottom:1px solid transparent;font-weight:500}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body table{width:100%;border-collapse:collapse;margin:32px 0;font-size:14px}
.article-body th,.article-body td{padding:12px 16px;border:1px solid var(--border);text-align:left}
.article-body th{background:var(--card);font-weight:600;color:var(--text-0)}
.article-body td{color:rgba(244,247,246,0.85)}
.article-body code{background:rgba(255,255,255,0.06);padding:3px 6px;border-radius:6px;font-size:14px;font-family:var(--font-en)}
.article-body pre{background:var(--bg-0);border:1px solid var(--border);border-radius:var(--radius-md);padding:24px;overflow-x:auto;line-height:1.7}
.article-body pre code{background:transparent;padding:0}
.article-tags{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:0;margin-bottom:32px}
.article-tags span{font-size:13px;color:var(--text-1);letter-spacing:0.04em}
.tag{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:transparent;border:1px solid rgba(255,255,255,0.14);color:var(--text-0);border-radius:999px;font-size:12px;font-weight:500;transition:border-color var(--transition),color var(--transition),background var(--transition)}
.tag:hover{border-color:var(--primary);color:var(--primary)}
.tag-primary{background:var(--primary);color:#0A0E0D;border-color:transparent;font-weight:600}
.tag-primary:hover{background:var(--primary-light);color:#0A0E0D;border-color:transparent}
.tag-outline{border-color:rgba(0,232,156,0.35);color:var(--primary)}
.badge{position:absolute;top:12px;left:12px;z-index:2;background:var(--accent);color:#0A0E0D;font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;box-shadow:0 4px 16px rgba(255,178,94,0.25)}
.article-pagination{display:flex;align-items:center;gap:16px;margin-bottom:56px}
.pagination-btn{display:inline-flex;align-items:center;gap:10px;padding:12px 20px;border:1px solid var(--border);border-radius:999px;font-size:14px;font-weight:500;color:var(--text-0);background:var(--card);transition:border-color var(--transition),background var(--transition),color var(--transition)}
.pagination-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--card-hover)}
.pagination-btn i{font-size:13px}
.related-posts{margin-bottom:64px}
.section-title{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:28px}
.section-title h2{font-size:28px;font-weight:700;letter-spacing:-0.01em}
.section-title h2 span{color:var(--primary)}
.section-title .btn-text{font-size:13px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:transform 200ms ease,border-color var(--transition),background var(--transition);display:block;position:relative}
.related-card:hover{background:var(--card-hover);border-color:var(--border-hover);transform:translateY(-4px)}
.related-card .cover{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--bg-0)}
.related-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.related-card:hover .cover img{transform:scale(1.04)}
.related-card .cover::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,14,13,0) 55%,rgba(10,14,13,0.35) 100%);transition:background 300ms ease}
.related-card:hover .cover::after{background:linear-gradient(180deg,rgba(10,14,13,0) 40%,rgba(10,14,13,0.6) 100%)}
.related-card .info{padding:18px 20px 20px}
.related-card .info h3{font-size:17px;font-weight:600;line-height:1.45;margin-bottom:12px;color:var(--text-0);transition:color var(--transition)}
.related-card:hover .info h3{color:var(--primary)}
.related-card .info .tag{font-size:11px;padding:4px 10px}
.article-sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:24px}
.sidebar-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);padding:24px}
.sidebar-card h4{font-size:16px;font-weight:700;margin-bottom:20px;color:var(--text-0);position:relative;padding-bottom:12px}
.sidebar-card h4::after{content:'';position:absolute;left:0;bottom:0;width:32px;height:2px;background:var(--primary);border-radius:2px}
.sidebar-list{list-style:none;display:flex;flex-direction:column;gap:4px}
.sidebar-list li{border-radius:8px;transition:background var(--transition)}
.sidebar-list li:hover{background:rgba(255,255,255,0.04)}
.sidebar-list a{display:block;padding:10px 12px;font-size:14px;line-height:1.5;color:rgba(244,247,246,0.85);transition:color var(--transition)}
.sidebar-list a:hover{color:var(--primary)}
.sidebar-list a .num{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;margin-right:8px;font-size:11px;font-weight:700;color:var(--primary);background:rgba(0,232,156,0.1);border-radius:6px;font-family:var(--font-en)}
.sidebar-card.cat-card{background:linear-gradient(150deg,rgba(0,232,156,0.08),rgba(0,0,0,0) 60%),var(--card)}
.cat-links{display:flex;flex-direction:column;gap:4px}
.cat-links a{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:8px;font-size:14px;color:var(--text-1);transition:background var(--transition),color var(--transition)}
.cat-links a:hover{background:rgba(0,232,156,0.08);color:var(--primary)}
.cat-links a i{font-size:12px;transition:transform 200ms ease}
.cat-links a:hover i{transform:translateX(3px)}
.not-found{text-align:center;padding:80px 24px;background:var(--bg-1);border:1px dashed rgba(255,255,255,0.18);border-radius:var(--radius-lg)}
.not-found i{font-size:42px;color:var(--text-1);margin-bottom:16px}
.not-found h2{font-size:26px;color:var(--text-0);margin-bottom:12px}
.not-found p{color:var(--text-1);font-size:14px;margin-bottom:24px}
.article-cta{position:relative;padding:80px 0;background:linear-gradient(180deg,rgba(10,14,13,0.9) 0%,rgba(10,14,13,0.75) 100%),url('/assets/images/backpic/back-3.webp') center/cover no-repeat;text-align:center}
.article-cta h2{font-size:34px;font-weight:800;letter-spacing:-0.02em;color:var(--text-0);margin-bottom:14px}
.article-cta p{font-size:16px;color:var(--text-1);max-width:640px;margin:0 auto 32px;line-height:1.7}
.site-footer{background:#0C110F;border-top:1px solid var(--border);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer-brand{max-width:320px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-1);line-height:1.75;margin-bottom:20px}
.footer-social{display:flex;gap:10px}
.footer-social a{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid rgba(255,255,255,0.1);border-radius:10px;color:var(--text-1);font-size:16px;transition:border-color var(--transition),color var(--transition),background var(--transition)}
.footer-social a:hover{border-color:var(--primary);color:var(--primary);background:rgba(0,232,156,0.06)}
.footer-col h4{font-size:15px;font-weight:700;color:var(--text-0);margin-bottom:20px;position:relative;padding-bottom:12px}
.footer-col h4::after{content:'';position:absolute;left:0;bottom:0;width:28px;height:2px;background:var(--primary);border-radius:2px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col ul li a{font-size:14px;color:var(--text-1);transition:color var(--transition),padding-left 200ms ease}
.footer-col ul li a:hover{color:var(--primary);padding-left:4px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:20px 0;border-top:1px solid rgba(255,255,255,0.06);font-size:13px;color:var(--text-1)}
.footer-bottom a{display:inline-flex;align-items:center;gap:8px;color:var(--text-1);transition:color var(--transition)}
.footer-bottom a:hover{color:var(--primary)}
@media (min-width:1201px){
    .search-box{min-width:240px}
}
@media (max-width:1199px){
    .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:36px}
    .article-body{padding:40px 40px}
    .search-box{min-width:160px}
}
@media (max-width:1024px){
    .article-layout{grid-template-columns:1fr}
    .article-sidebar{display:none}
    .related-grid{grid-template-columns:repeat(2,1fr)}
    .article-body{padding:36px 32px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .footer-brand{max-width:none}
}
@media (max-width:768px){
    .container{padding:0 16px}
    .nav-links{position:fixed;top:var(--header-h);left:0;right:0;background:rgba(10,14,13,0.97);flex-direction:column;align-items:flex-start;gap:4px;padding:16px 24px 24px;display:none;border-bottom:1px solid var(--border);z-index:999}
    body.nav-open .nav-links{display:flex}
    .nav-links a{display:block;width:100%;padding:12px 0;font-size:16px}
    .nav-links a.active::after{display:none}
    .nav-links a.active{color:var(--primary)}
    .nav-actions .search-box{display:none}
    .nav-toggle{display:inline-flex}
    .article-hero{padding:120px 0 48px}
    .article-title{font-size:32px}
    .breadcrumb{margin-bottom:20px}
    .article-meta{gap:14px}
    .article-summary{padding:16px 18px;font-size:14px}
    .article-body{padding:28px 20px}
    .article-body h2{font-size:24px;margin:36px 0 14px}
    .article-body h3{font-size:19px}
    .related-grid{grid-template-columns:1fr}
    .article-pagination{flex-direction:column;align-items:stretch}
    .pagination-btn{justify-content:center}
    .article-cta{padding:56px 0}
    .article-cta h2{font-size:26px}
    .section-title h2{font-size:22px}
    .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:24px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
    .article-title{font-size:28px}
    .related-grid{grid-template-columns:1fr}
    .pagination-btn{font-size:13px;padding:10px 16px}
    .article-eyebrow{font-size:12px}
}

/* roulang page: category2 */
:root {
            --bg-primary: #0A0E0D;
            --bg-secondary: #101614;
            --bg-card: #161D1B;
            --bg-card-hover: #1B2421;
            --accent: #00E89C;
            --accent-hover: #00FFAB;
            --accent-secondary: #FFB25E;
            --text-primary: #F4F7F6;
            --text-secondary: #8A9B94;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 232, 156, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --container: 1280px;
            --shadow: rgba(0, 0, 0, 0.5);
            --transition: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--accent);
            color: var(--bg-primary);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            gap: 8px;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 232, 156, 0.25);
        }

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

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.16);
            transition: all var(--transition);
            gap: 8px;
            white-space: nowrap;
        }

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

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 13, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--accent);
            color: var(--bg-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-links a {
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            position: relative;
        }

        .nav-links a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-links a.active {
            color: var(--accent);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

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

        .search-box {
            display: flex;
            align-items: center;
            gap: 10px;
            height: 40px;
            padding: 0 14px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-secondary);
            font-size: 13px;
            cursor: pointer;
            transition: all var(--transition);
            min-width: 200px;
        }

        .search-box:hover {
            border-color: rgba(0, 232, 156, 0.4);
        }

        .search-box:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 232, 156, 0.25);
        }

        .search-box .fa-search {
            font-size: 14px;
        }

        .search-box span {
            flex: 1;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .search-box .kbd {
            flex: none;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
            padding: 2px 7px;
            font-size: 11px;
            font-weight: 600;
            color: var(--text-secondary);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            color: var(--text-primary);
            font-size: 16px;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }

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

        /* Hero */
        .category-hero {
            position: relative;
            padding: 180px 0 120px;
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(10, 14, 13, 0.96) 30%, rgba(10, 14, 13, 0.6) 70%, rgba(10, 14, 13, 0.35));
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

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

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

        .breadcrumb span {
            color: var(--text-secondary);
        }

        .category-h1 {
            font-size: clamp(36px, 5vw, 56px);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }

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

        .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 36px;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-meta {
            display: flex;
            gap: 32px;
            margin-top: 48px;
            flex-wrap: wrap;
        }

        .hero-meta-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-meta-item strong {
            font-size: 24px;
            font-weight: 700;
            color: var(--accent);
            font-family: "Inter", "SF Pro Display", sans-serif;
        }

        .hero-meta-item span {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* 通用区块 */
        .section {
            padding: 96px 0;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 48px;
            gap: 24px;
            flex-wrap: wrap;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        .section-title span {
            color: var(--accent);
        }

        .section-subtitle {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 8px;
        }

        .section-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

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

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

        .section-link i {
            transition: transform var(--transition);
        }

        /* 权益卡片 */
        .benefit-section {
            background: var(--bg-secondary);
        }

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

        .benefit-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .benefit-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent);
            opacity: 0;
            transition: all var(--transition);
        }

        .benefit-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
        }

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

        .benefit-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 232, 156, 0.1);
            border: 1px solid rgba(0, 232, 156, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent);
            margin-bottom: 20px;
        }

        .benefit-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .benefit-card p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        /* 内容介绍 */
        .intro-section {
            position: relative;
        }

        .intro-layout {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 64px;
            align-items: center;
        }

        .intro-copy h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 20px;
        }

        .intro-copy h2 span {
            color: var(--accent);
        }

        .intro-copy>p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }

        .feature-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            line-height: 1.65;
        }

        .feature-list li i {
            margin-top: 3px;
            color: var(--accent);
            font-size: 16px;
        }

        .intro-media {
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
            position: relative;
        }

        .intro-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
            transition: transform 0.5s ease;
        }

        .intro-media:hover img {
            transform: scale(1.03);
        }

        .intro-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(10, 14, 13, 0.4));
            pointer-events: none;
        }

        /* 流程步骤 */
        .steps-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

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

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }

        .step-card:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
            transform: translateY(-4px);
        }

        .step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(0, 232, 156, 0.1);
            border: 1px solid rgba(0, 232, 156, 0.3);
            color: var(--accent);
            font-size: 18px;
            font-weight: 700;
            margin: 0 auto 20px;
            font-family: "Inter", "SF Pro Display", sans-serif;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

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

        /* 数据统计 */
        .stats-band {
            padding: 64px 0;
            background: linear-gradient(135deg, #0C1210 0%, #111715 100%);
            border-bottom: 1px solid var(--border);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 16px;
        }

        .stat-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--accent);
            font-family: "Inter", "SF Pro Display", sans-serif;
            line-height: 1.1;
        }

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

        /* FAQ */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-item.active {
            border-color: rgba(0, 232, 156, 0.5);
        }

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

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

        .faq-question i {
            font-size: 14px;
            transition: transform var(--transition);
            color: var(--text-secondary);
            flex: none;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 24px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        /* CTA */
        .cta-band {
            padding: 96px 0;
            background: linear-gradient(150deg, rgba(0, 232, 156, 0.06) 0%, transparent 40%),
                url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 13, 0.9), rgba(10, 14, 13, 0.96));
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.8;
        }

        /* 页脚 */
        .site-footer {
            background: #0C110F;
            border-top: 1px solid var(--border);
            padding: 72px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

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

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 320px;
        }

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

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: var(--text-secondary);
            transition: all 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;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .footer-bottom a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

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

        /* 移动端抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(10, 14, 13, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 8px;
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.6);
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer a {
            padding: 14px 16px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .mobile-drawer a:hover,
        .mobile-drawer a.active {
            color: var(--accent);
            background: rgba(0, 232, 156, 0.06);
            border-color: rgba(0, 232, 156, 0.2);
        }

        .mobile-drawer .drawer-cta {
            margin-top: 8px;
            width: 100%;
        }

        /* 响应式 */
        @media (max-width: 1199px) {
            .intro-layout {
                gap: 48px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 8px;
            }

            .nav-links a {
                padding: 6px 12px;
                font-size: 14px;
            }

            .search-box {
                min-width: 160px;
            }

            .search-box .kbd {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }

            .section {
                padding: 64px 0;
            }

            .nav-links {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .search-box {
                min-width: 42px;
                width: 42px;
                padding: 0;
                justify-content: center;
                border-radius: 10px;
            }

            .search-box span,
            .search-box .kbd {
                display: none;
            }

            .search-box .fa-search {
                font-size: 16px;
            }

            .category-hero {
                padding: 140px 0 80px;
            }

            .category-h1 {
                font-size: 36px;
            }

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

            .hero-meta {
                gap: 24px;
            }

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

            .intro-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }

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

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

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

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

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

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

        @media (max-width: 520px) {
            .nav-inner {
                gap: 12px;
            }

            .search-box {
                width: 38px;
                min-width: 38px;
                height: 38px;
            }

            .btn-primary {
                padding: 10px 16px;
                font-size: 14px;
            }

            .category-h1 {
                font-size: 32px;
            }

            .hero-meta {
                gap: 16px;
            }

            .hero-meta-item strong {
                font-size: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }