/* roulang page: index */
:root {
      --bg: #f7f9fc;
      --surface: #ffffff;
      --ink: #17243a;
      --muted: #64748b;
      --brand: #315eae;
      --brand-dark: #244b91;
      --pale: #eaf2ff;
      --line: #e5eaf2;
      --blush: #f5e8ee;
      --apricot: #fff1e3;
      --radius-lg: 24px;
      --radius-md: 16px;
      --shadow-soft: 0 18px 50px rgba(38,72,125,.10);
      --shadow-card: 0 8px 28px rgba(38,72,125,.08);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--bg);
      font-family: -apple-system, BlinkMacSystemFont, "Microsoft YaHei", "PingFang SC", sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    .container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
    .site-header {
      position: sticky; top: 0; z-index: 30;
      background: rgba(255,255,255,.92);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(14px);
    }
    .nav-wrap { min-height: 76px; display: flex; align-items: center; gap: 28px; }
    .logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -.03em; white-space: nowrap; }
    .logo-mark {
      width: 34px; height: 34px; border-radius: 12px;
      display: grid; place-items: center; color: #fff; background: var(--brand);
      box-shadow: 0 7px 16px rgba(49,94,174,.22);
    }
    .nav-links { display: flex; align-items: center; gap: 6px; }
    .nav-link {
      position: relative; padding: 9px 13px; color: var(--muted);
      font-size: 14px; border-radius: 10px; transition: .2s ease;
    }
    .nav-link:hover, .nav-link.active { color: var(--brand); background: var(--pale); }
    .nav-link.active::after {
      content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px;
      height: 2px; border-radius: 3px; background: var(--brand);
    }
    .stage-line { display: flex; align-items: center; gap: 7px; margin-left: auto; white-space: nowrap; }
    .stage-chip, .tag {
      display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px;
      border: 1px solid var(--line); border-radius: 999px; color: var(--muted);
      background: #fff; font-size: 12px; transition: .2s ease;
    }
    .stage-chip:hover, .stage-chip.active { color: var(--brand); border-color: #c8d9f6; background: var(--pale); }
    .stage-dot { width: 6px; height: 6px; border-radius: 50%; background: #b7c2d1; }
    .stage-chip.active .stage-dot { background: #d58b9d; }
    .nav-action { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 12px; background: #fff; color: var(--muted); display: grid; place-items: center; transition: .2s; }
    .nav-action:hover { color: var(--brand); border-color: #bfd1f1; transform: translateY(-1px); }
    .section { padding: 94px 0; }
    .section-head { max-width: 700px; margin-bottom: 36px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--brand); font-weight: 700; font-size: 13px; letter-spacing: .08em; }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--brand); border-radius: 4px; }
    h1, h2, h3, p { margin-top: 0; }
    h1 { font-size: clamp(38px, 5vw, 62px); line-height: 1.18; letter-spacing: -.055em; }
    h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.28; letter-spacing: -.04em; }
    h3 { line-height: 1.4; letter-spacing: -.02em; }
    .section-copy { color: var(--muted); font-size: 16px; max-width: 660px; }
    .hero { padding: 78px 0 84px; overflow: hidden; }
    .hero-grid { display: grid; grid-template-columns: 1.04fr .96fr; gap: 74px; align-items: center; }
    .hero h1 { max-width: 650px; margin-bottom: 24px; }
    .hero-intro { color: var(--muted); font-size: 17px; max-width: 620px; }
    .actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 31px 0 28px; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 46px; padding: 0 20px; border-radius: 12px; border: 1px solid transparent;
      font-weight: 700; font-size: 14px; transition: .2s ease;
    }
    .btn-primary { color: #fff; background: var(--brand); box-shadow: 0 9px 18px rgba(49,94,174,.18); }
    .btn-primary:hover { background: var(--brand-dark); transform: translateY(-2px); box-shadow: 0 13px 24px rgba(49,94,174,.24); }
    .btn-secondary { color: var(--brand); background: var(--pale); border-color: #d8e5fa; }
    .btn-secondary:hover { background: #dceaff; transform: translateY(-2px); }
    .btn-quiet { color: var(--muted); background: #fff; border-color: var(--line); }
    .btn-quiet:hover { color: var(--brand); border-color: #bfd1f1; }
    .trust-row { display: flex; flex-wrap: wrap; gap: 18px; color: var(--muted); font-size: 13px; }
    .trust-row span { display: inline-flex; align-items: center; gap: 7px; }
    .trust-row i { width: 7px; height: 7px; border-radius: 50%; background: #a9c5f4; }
    .hero-board { position: relative; min-height: 430px; padding: 20px; }
    .hero-board::before { content: ""; position: absolute; width: 250px; height: 250px; right: -40px; top: -30px; border-radius: 50%; background: #e5edfb; }
    .hero-main-card, .mini-card { position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-soft); }
    .hero-main-card { min-height: 330px; padding: 25px; overflow: hidden; }
    .cover-art { position: relative; border-radius: 18px; overflow: hidden; background: linear-gradient(135deg, #dce9fb, #f3e9ee 65%, #fff0df); }
    .cover-art.large { height: 190px; margin-bottom: 20px; }
    .cover-art::after { content: ""; position: absolute; inset: 22px 28px auto auto; width: 82px; height: 82px; border: 1px solid rgba(49,94,174,.22); border-radius: 50%; box-shadow: -35px 34px 0 -12px rgba(255,255,255,.65); }
    .cover-word { position: absolute; left: 24px; bottom: 18px; font-size: 25px; color: rgba(23,36,58,.72); font-weight: 800; letter-spacing: .08em; }
    .card-meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; color: var(--muted); font-size: 12px; }
    .mini-card { position: absolute; width: 210px; padding: 14px; }
    .mini-card.one { left: -12px; bottom: 18px; transform: rotate(-3deg); }
    .mini-card.two { right: -12px; top: 38px; transform: rotate(3deg); }
    .mini-card .cover-art { height: 88px; margin-bottom: 10px; }
    .mini-card h3 { font-size: 14px; margin-bottom: 3px; }
    .mini-card p { font-size: 12px; color: var(--muted); margin: 0; }
    .feature-layout { display: grid; grid-template-columns: 1.45fr .8fr .8fr; gap: 18px; }
    .feature-card, .content-card, .price-card, .faq-item { background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-card); border-radius: var(--radius-md); }
    .feature-card { min-height: 220px; padding: 26px; transition: .25s; }
    .feature-card:hover, .content-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-soft); }
    .feature-card.main { background: #edf4ff; border-color: #d8e5fa; }
    .feature-icon { width: 42px; height: 42px; border-radius: 13px; display: grid; place-items: center; color: var(--brand); background: #fff; margin-bottom: 24px; }
    .feature-card h3 { font-size: 20px; margin-bottom: 9px; }
    .feature-card p { color: var(--muted); font-size: 14px; margin-bottom: 20px; }
    .small-link { color: var(--brand); font-size: 13px; font-weight: 700; }
    .scene-wrap { display: grid; grid-template-columns: 270px 1fr; gap: 50px; align-items: start; }
    .timeline { position: relative; padding-left: 26px; }
    .timeline::before { content: ""; position: absolute; left: 5px; top: 8px; bottom: 8px; width: 1px; background: #cbd8ed; }
    .timeline-item { position: relative; padding: 0 0 30px; color: var(--muted); }
    .timeline-item::before { content: ""; position: absolute; left: -25px; top: 9px; width: 10px; height: 10px; border: 3px solid var(--bg); border-radius: 50%; background: #a9c5f4; box-shadow: 0 0 0 1px #a9c5f4; }
    .timeline-item.active { color: var(--ink); }
    .timeline-item.active::before { background: var(--brand); box-shadow: 0 0 0 1px var(--brand); }
    .scene-panel { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; }
    .scene-card { min-height: 315px; padding: 27px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-card); }
    .scene-card.art { background: linear-gradient(145deg, #dceafe, #f6e9ee); display: flex; align-items: end; }
    .scene-card h3 { font-size: 24px; margin-bottom: 10px; }
    .scene-card p { color: var(--muted); font-size: 14px; }
    .case-grid { display: grid; grid-template-columns: 1.5fr .8fr; gap: 18px; }
    .case-main { padding: 27px; border-radius: var(--radius-lg); background: #eaf2ff; border: 1px solid #d5e3fa; }
    .case-main .cover-art { height: 220px; margin-bottom: 23px; }
    .case-aside { display: grid; gap: 18px; }
    .stat-card { padding: 23px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: var(--shadow-card); }
    .stat-card strong { display: block; color: var(--brand); font-size: 30px; line-height: 1.2; margin-bottom: 4px; }
    .stat-card span { color: var(--muted); font-size: 13px; }
    .price-grid { display: grid; grid-template-columns: .8fr 1.12fr .8fr; gap: 18px; align-items: stretch; }
    .price-card { padding: 27px; position: relative; }
    .price-card.recommended { background: #edf4ff; border: 2px solid #86a9e3; transform: translateY(-10px); }
    .recommend { position: absolute; top: 18px; right: 18px; padding: 4px 9px; border-radius: 999px; color: var(--brand); background: #dceaff; font-size: 11px; font-weight: 700; }
    .price-card h3 { font-size: 20px; margin-bottom: 7px; }
    .price-card p { color: var(--muted); font-size: 13px; min-height: 48px; }
    .price { font-size: 35px; font-weight: 800; margin: 20px 0; letter-spacing: -.04em; }
    .price small { font-size: 13px; color: var(--muted); font-weight: 400; }
    .benefits { list-style: none; padding: 0; margin: 0 0 25px; color: var(--muted); font-size: 13px; }
    .benefits li { padding: 8px 0; border-bottom: 1px solid rgba(229,234,242,.8); }
    .benefits li::before { content: "✓"; color: var(--brand); margin-right: 8px; font-weight: 800; }
    .rank-panel { margin-top: 24px; padding: 25px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-card); }
    .rank-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .rank-item { display: flex; align-items: center; gap: 12px; padding: 13px; border-radius: 12px; background: var(--bg); }
    .rank-number { color: var(--brand); font-weight: 800; font-size: 18px; }
    .rank-item b { display: block; font-size: 14px; }
    .rank-item span { color: var(--muted); font-size: 12px; }
    .faq-list { max-width: 850px; margin: 0 auto; display: grid; gap: 10px; }
    .faq-item { overflow: hidden; box-shadow: none; }
    .faq-question { width: 100%; border: 0; background: #fff; padding: 20px 22px; display: flex; justify-content: space-between; align-items: center; text-align: left; color: var(--ink); font-weight: 700; }
    .faq-question:hover { color: var(--brand); background: #fbfdff; }
    .faq-answer { display: none; padding: 0 22px 20px; color: var(--muted); font-size: 14px; }
    .faq-item.open .faq-answer { display: block; }
    .faq-item.open .faq-question { background: var(--pale); color: var(--brand); }
    .faq-arrow { transition: .2s; color: var(--brand); }
    .faq-item.open .faq-arrow { transform: rotate(180deg); }
    .cta { padding: 48px; border-radius: var(--radius-lg); background: #eaf2ff; border: 1px solid #d5e3fa; display: flex; justify-content: space-between; align-items: center; gap: 30px; }
    .cta h2 { font-size: 30px; margin-bottom: 9px; }
    .cta p { color: var(--muted); margin: 0; max-width: 620px; }
    footer { padding: 52px 0 30px; background: #eef2f8; border-top: 1px solid var(--line); }
    .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 30px; padding-bottom: 42px; }
    .footer-title { font-weight: 800; margin-bottom: 14px; font-size: 14px; }
    .footer-link { display: block; color: var(--muted); font-size: 13px; margin: 8px 0; transition: .2s; }
    .footer-link:hover { color: var(--brand); }
    .copyright { padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; display: flex; justify-content: space-between; gap: 15px; flex-wrap: wrap; }
    :focus-visible { outline: 3px solid rgba(49,94,174,.32); outline-offset: 3px; }
    @media (max-width: 1024px) {
      .hero-grid { gap: 35px; }
      .feature-layout { grid-template-columns: 1fr 1fr; }
      .feature-card.main { grid-column: span 2; }
      .stage-line { margin-left: 0; }
      .nav-wrap { gap: 15px; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 28px, 620px); }
      .nav-wrap { flex-wrap: wrap; padding: 13px 0; }
      .nav-links { order: 3; width: 100%; overflow-x: auto; padding-bottom: 2px; }
      .stage-line { order: 4; width: 100%; overflow-x: auto; }
      .nav-action { margin-left: auto; }
      .hero { padding: 52px 0 62px; }
      .hero-grid, .scene-wrap, .case-grid { grid-template-columns: 1fr; }
      .hero-board { margin-top: 12px; }
      .scene-panel { grid-template-columns: 1fr; }
      .price-grid { grid-template-columns: 1fr; }
      .price-card.recommended { transform: none; order: -1; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .cta { flex-direction: column; align-items: flex-start; padding: 32px 25px; }
      .rank-list { grid-template-columns: 1fr; }
    }
    @media (max-width: 520px) {
      .section { padding: 68px 0; }
      h1 { font-size: 38px; }
      .hero-board { min-height: 410px; padding: 12px; }
      .mini-card { width: 175px; }
      .mini-card.one { left: -4px; }
      .mini-card.two { right: -4px; }
      .feature-layout { grid-template-columns: 1fr; }
      .feature-card.main { grid-column: auto; }
      .footer-grid { grid-template-columns: 1fr; }
      .actions .btn { width: 100%; }
    }

/* roulang page: category1 */
:root {
      --bg:#f7f9fc;
      --surface:#fff;
      --ink:#17243a;
      --muted:#64748b;
      --brand:#315eae;
      --brand-dark:#244b91;
      --pale:#eaf2ff;
      --line:#e5eaf2;
      --blush:#f5e8ee;
      --apricot:#fff1e3;
      --radius-lg:24px;
      --radius-md:16px;
      --shadow-soft:0 18px 50px rgba(38,72,125,.10);
      --shadow-card:0 8px 28px rgba(38,72,125,.08);
    }
    * { box-sizing:border-box; }
    html { scroll-behavior:smooth; }
    body {
      margin:0;
      color:var(--ink);
      background:var(--bg);
      font-family:-apple-system,BlinkMacSystemFont,"Microsoft YaHei","PingFang SC",sans-serif;
      line-height:1.75;
      -webkit-font-smoothing:antialiased;
    }
    a { color:inherit; text-decoration:none; }
    img { max-width:100%; display:block; }
    button,input { font:inherit; }
    button { cursor:pointer; }
    .container { width:min(1180px,calc(100% - 40px)); margin:0 auto; }
    .site-header {
      position:sticky; top:0; z-index:30;
      background:rgba(255,255,255,.94);
      border-bottom:1px solid var(--line);
      backdrop-filter:blur(14px);
    }
    .nav-wrap { min-height:76px; display:flex; align-items:center; gap:28px; }
    .logo { display:inline-flex; align-items:center; gap:10px; font-weight:800; letter-spacing:-.03em; white-space:nowrap; }
    .logo-mark {
      width:34px; height:34px; border-radius:12px; display:grid; place-items:center;
      color:#fff; background:var(--brand); box-shadow:0 7px 16px rgba(49,94,174,.22);
    }
    .nav-links { display:flex; align-items:center; gap:6px; }
    .nav-link {
      position:relative; padding:9px 13px; color:var(--muted); font-size:14px;
      border-radius:10px; transition:.2s ease;
    }
    .nav-link:hover,.nav-link.active { color:var(--brand); background:var(--pale); }
    .nav-link.active::after {
      content:""; position:absolute; left:14px; right:14px; bottom:2px;
      height:2px; border-radius:3px; background:var(--brand);
    }
    .stage-line { display:flex; align-items:center; gap:7px; margin-left:auto; white-space:nowrap; }
    .stage-chip,.tag {
      display:inline-flex; align-items:center; gap:6px; padding:5px 10px;
      border:1px solid var(--line); border-radius:999px; color:var(--muted);
      background:#fff; font-size:12px; transition:.2s ease;
    }
    .stage-chip:hover,.stage-chip.active { color:var(--brand); border-color:#c8d9f6; background:var(--pale); }
    .stage-dot { width:6px; height:6px; border-radius:50%; background:#b7c2d1; }
    .stage-chip.active .stage-dot { background:#d58b9d; }
    .nav-action {
      width:38px; height:38px; border:1px solid var(--line); border-radius:12px;
      background:#fff; color:var(--muted); display:grid; place-items:center; transition:.2s;
    }
    .nav-action:hover { color:var(--brand); border-color:#bfd1f1; transform:translateY(-1px); }
    .page-hero { padding:76px 0 52px; }
    .hero-panel {
      display:grid; grid-template-columns:1.15fr .85fr; gap:54px; align-items:center;
      padding:48px; border:1px solid #dbe6f7; border-radius:28px;
      background:linear-gradient(115deg,#eef5ff 0%,#fff 68%);
      box-shadow:var(--shadow-soft); overflow:hidden; position:relative;
    }
    .hero-panel::after {
      content:""; position:absolute; width:260px; height:260px; right:-80px; bottom:-130px;
      border-radius:50%; background:#f7e9ed; opacity:.7;
    }
    .eyebrow { display:inline-flex; align-items:center; gap:8px; color:var(--brand); font-weight:700; font-size:13px; letter-spacing:.08em; }
    .eyebrow::before { content:""; width:24px; height:2px; background:var(--brand); border-radius:4px; }
    h1,h2,h3,p { margin-top:0; }
    h1 { margin-bottom:18px; font-size:clamp(34px,5vw,56px); line-height:1.18; letter-spacing:-.055em; }
    h2 { font-size:clamp(27px,3vw,36px); line-height:1.3; letter-spacing:-.04em; margin-bottom:12px; }
    h3 { line-height:1.4; letter-spacing:-.02em; }
    .hero-copy { color:var(--muted); font-size:16px; max-width:650px; }
    .hero-actions { display:flex; flex-wrap:wrap; gap:12px; margin-top:28px; }
    .btn {
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      min-height:46px; padding:0 20px; border-radius:12px; border:1px solid transparent;
      font-weight:700; font-size:14px; transition:.2s ease;
    }
    .btn:focus,.filter-chip:focus,.nav-action:focus { outline:3px solid rgba(49,94,174,.2); outline-offset:2px; }
    .btn-primary { color:#fff; background:var(--brand); box-shadow:0 9px 18px rgba(49,94,174,.18); }
    .btn-primary:hover { background:var(--brand-dark); transform:translateY(-2px); box-shadow:0 13px 24px rgba(49,94,174,.24); }
    .btn-secondary { color:var(--brand); background:var(--pale); border-color:#d8e5fa; }
    .btn-secondary:hover { background:#dceaff; transform:translateY(-2px); }
    .btn-quiet { color:var(--muted); background:#fff; border-color:var(--line); }
    .btn-quiet:hover { color:var(--brand); border-color:#bfd1f1; }
    .hero-visual { position:relative; min-height:250px; z-index:1; }
    .visual-card {
      position:absolute; inset:15px 25px 10px 10px; padding:20px; border-radius:22px;
      background:#fff; border:1px solid var(--line); box-shadow:var(--shadow-card);
    }
    .visual-card h3 { font-size:21px; margin:20px 0 7px; }
    .cover-art {
      min-height:130px; border-radius:16px; position:relative; overflow:hidden;
      background:linear-gradient(135deg,#dceaff 0%,#b9cdee 52%,#f5e8ee 100%);
    }
    .cover-art::before {
      content:""; position:absolute; width:120px; height:120px; right:18px; top:-35px;
      border:18px solid rgba(255,255,255,.42); border-radius:50%;
    }
    .cover-art::after {
      content:""; position:absolute; width:80px; height:80px; left:24px; bottom:-28px;
      background:rgba(255,255,255,.3); transform:rotate(28deg); border-radius:20px;
    }
    .visual-mini {
      position:absolute; right:-2px; bottom:-3px; width:170px; padding:13px;
      border-radius:17px; background:#fff; border:1px solid var(--line);
      box-shadow:var(--shadow-soft); transform:rotate(4deg);
    }
    .visual-mini .cover-art { min-height:74px; margin-bottom:8px; background:linear-gradient(135deg,#fff0df,#e4d8ee); }
    .visual-mini strong { display:block; font-size:13px; }
    .visual-mini small { color:var(--muted); font-size:11px; }
    .section { padding:78px 0; }
    .section-head { display:flex; justify-content:space-between; align-items:end; gap:24px; margin-bottom:28px; }
    .section-copy { color:var(--muted); max-width:650px; font-size:15px; }
    .filter-bar {
      display:flex; align-items:center; gap:10px; flex-wrap:wrap; padding:14px;
      margin-bottom:26px; border:1px solid var(--line); border-radius:16px; background:#fff;
      box-shadow:0 5px 18px rgba(38,72,125,.04);
    }
    .filter-label { color:var(--muted); font-size:13px; margin-right:3px; }
    .filter-chip {
      border:1px solid var(--line); background:#fff; color:var(--muted);
      border-radius:999px; padding:7px 13px; font-size:13px; transition:.2s;
    }
    .filter-chip:hover,.filter-chip.active { color:var(--brand); border-color:#bfd1f1; background:var(--pale); }
    .filter-spacer { flex:1; }
    .stream-layout { display:grid; grid-template-columns:1.4fr .85fr; gap:20px; align-items:start; }
    .main-recommend,.content-card,.side-list,.faq-item {
      background:var(--surface); border:1px solid var(--line); border-radius:var(--radius-md);
      box-shadow:var(--shadow-card);
    }
    .main-recommend { overflow:hidden; transition:.25s; }
    .main-recommend:hover,.content-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-soft); }
    .main-recommend .cover-art { min-height:300px; border-radius:0; background:linear-gradient(135deg,#c8dcfb,#e9e0ef 55%,#ffe9dc); }
    .recommend-body { padding:26px; }
    .card-meta { display:flex; justify-content:space-between; align-items:center; gap:12px; color:var(--muted); font-size:12px; }
    .status-now { color:#8c5365; background:var(--blush); border-color:#edd5df; }
    .status-warm { color:#9a6a3c; background:var(--apricot); border-color:#f3dfc7; }
    .card-title { font-size:21px; margin:15px 0 8px; }
    .card-text { color:var(--muted); font-size:14px; margin-bottom:18px; }
    .side-column { display:grid; gap:20px; }
    .content-card { overflow:hidden; transition:.25s; }
    .content-card .cover-art { min-height:150px; border-radius:0; }
    .content-body { padding:18px; }
    .content-body h3 { font-size:18px; margin:12px 0 6px; }
    .content-body p { color:var(--muted); font-size:13px; margin-bottom:12px; }
    .side-list { padding:20px; }
    .side-list h3 { font-size:18px; margin-bottom:15px; }
    .list-row { display:flex; gap:12px; padding:13px 0; border-bottom:1px solid var(--line); }
    .list-row:last-child { border-bottom:0; padding-bottom:0; }
    .list-thumb { flex:0 0 70px; height:54px; border-radius:10px; background:linear-gradient(135deg,#dbe9ff,#f4dfe8); }
    .list-row strong { display:block; font-size:14px; line-height:1.45; }
    .list-row small { color:var(--muted); font-size:11px; }
    .topic-strip { margin-top:20px; display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
    .topic-note { padding:20px; border-radius:16px; background:#fff; border:1px solid var(--line); }
    .topic-note:nth-child(2) { background:#eef5ff; }
    .topic-note:nth-child(3) { background:#fff5ed; }
    .topic-note strong { display:block; margin-bottom:5px; }
    .topic-note p { color:var(--muted); font-size:13px; margin:0; }
    .faq-wrap { max-width:850px; }
    .faq-item { margin-bottom:10px; overflow:hidden; transition:.2s; }
    .faq-question {
      width:100%; display:flex; align-items:center; justify-content:space-between; gap:20px;
      padding:18px 20px; color:var(--ink); background:#fff; border:0; text-align:left; font-weight:700;
    }
    .faq-question:hover { color:var(--brand); background:#fbfdff; }
    .faq-arrow { color:var(--brand); font-size:20px; transition:.2s; }
    .faq-answer { display:none; padding:0 20px 18px; color:var(--muted); font-size:14px; }
    .faq-item.open { background:var(--pale); border-color:#cbdcf6; }
    .faq-item.open .faq-question { background:transparent; }
    .faq-item.open .faq-answer { display:block; }
    .faq-item.open .faq-arrow { transform:rotate(45deg); }
    .cta {
      padding:40px 46px; border-radius:24px; background:#eaf2ff;
      border:1px solid #d5e4fa; display:flex; align-items:center; justify-content:space-between; gap:25px;
    }
    .cta h2 { margin-bottom:8px; }
    .cta p { color:var(--muted); margin:0; }
    footer { margin-top:42px; padding:58px 0 24px; background:#eef2f8; border-top:1px solid var(--line); }
    .footer-grid { display:grid; grid-template-columns:1.5fr .8fr .8fr 1.2fr; gap:32px; }
    .footer-title { font-size:13px; font-weight:800; margin-bottom:13px; color:var(--ink); }
    .footer-link { display:block; color:var(--muted); font-size:13px; margin:7px 0; }
    a.footer-link:hover { color:var(--brand); }
    .copyright { display:flex; justify-content:space-between; gap:15px; margin-top:42px; padding-top:20px; border-top:1px solid #dce3ed; color:#8491a4; font-size:12px; }
    @media (max-width:1024px) {
      .hero-panel { gap:30px; padding:36px; }
      .stream-layout { grid-template-columns:1fr; }
      .side-column { grid-template-columns:1fr 1fr; }
    }
    @media (max-width:768px) {
      .container { width:min(100% - 28px,620px); }
      .nav-wrap { min-height:68px; gap:12px; overflow:hidden; }
      .logo { font-size:14px; }
      .logo-mark { width:30px; height:30px; border-radius:10px; }
      .nav-links { order:3; width:100%; overflow-x:auto; }
      .nav-wrap { flex-wrap:wrap; padding:10px 0; }
      .stage-line { order:2; margin-left:auto; max-width:100%; overflow-x:auto; }
      .nav-action { margin-left:auto; }
      .page-hero { padding:38px 0 25px; }
      .hero-panel { grid-template-columns:1fr; padding:28px 22px; }
      .hero-visual { min-height:230px; }
      .section { padding:58px 0; }
      .section-head { display:block; }
      .section-head .btn { margin-top:16px; }
      .topic-strip { grid-template-columns:1fr; }
      .side-column { grid-template-columns:1fr; }
      .cta { display:block; padding:30px 24px; }
      .cta .btn { margin-top:20px; }
      .footer-grid { grid-template-columns:1fr 1fr; }
    }
    @media (max-width:520px) {
      .nav-links { gap:0; }
      .stage-line { width:100%; justify-content:flex-start; order:4; padding-top:2px; }
      .nav-action { order:2; }
      h1 { font-size:35px; }
      .hero-actions .btn { width:100%; }
      .filter-bar { flex-wrap:nowrap; overflow-x:auto; }
      .filter-label { flex:0 0 auto; }
      .filter-spacer { display:none; }
      .filter-chip { flex:0 0 auto; }
      .main-recommend .cover-art { min-height:220px; }
      .recommend-body { padding:20px; }
      .footer-grid { grid-template-columns:1fr; gap:24px; }
      .copyright { display:block; line-height:2; }
    }