/* roulang page: index */
:root {
      --primary-gradient: linear-gradient(135deg, #0ea5e9 0%, #22c55e 52%, #10b981 100%);
      --dark-gradient: linear-gradient(135deg, #102033 0%, #123c55 58%, #0b7661 100%);
      --page-bg: #f4f8fb;
      --surface: #ffffff;
      --text: #102033;
      --muted: #64748b;
      --line: #dce7ee;
      --orange: #f97316;
      --card-radius: 28px;
      --shadow: 0 24px 70px rgba(16, 32, 51, .10);
      --shadow-strong: 0 28px 80px rgba(16, 32, 51, .16);
      --container: 1180px;
    }

    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--text);
      background: var(--page-bg);
      font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
      line-height: 1.7;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button, input, textarea { font: inherit; }
    button { cursor: pointer; }
    :focus-visible { outline: 3px solid rgba(14, 165, 233, .45); outline-offset: 3px; }
    .container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
    .section { padding: 96px 0; }
    .section-head { max-width: 720px; margin-bottom: 42px; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 13px;
      border: 1px solid rgba(14,165,233,.18);
      border-radius: 999px;
      color: #0877a9;
      background: #e9f8ff;
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .04em;
    }
    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: #22c55e;
      box-shadow: 0 0 0 5px rgba(34,197,94,.12);
    }
    .section-title {
      margin: 16px 0 12px;
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.16;
      letter-spacing: -.045em;
      font-weight: 900;
    }
    .section-copy { margin: 0; color: var(--muted); font-size: 17px; }
    .gradient-text {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .site-header {
      position: fixed;
      z-index: 50;
      inset: 0 0 auto;
      background: rgba(255,255,255,.90);
      border-bottom: 1px solid rgba(220,231,238,.85);
      backdrop-filter: blur(18px);
    }
    .nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; min-width: 205px; }
    .brand-mark {
      width: 40px; height: 40px; display: grid; place-items: center;
      color: white; border-radius: 14px; background: var(--primary-gradient);
      box-shadow: 0 10px 24px rgba(14,165,233,.25);
      font-size: 20px; font-weight: 900;
    }
    .brand-text { display: flex; flex-direction: column; line-height: 1.1; }
    .brand-text strong { font-size: 15px; letter-spacing: -.02em; }
    .brand-text span { color: #738397; font-size: 11px; margin-top: 5px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 4px; }
    .nav-links a {
      padding: 10px 11px; border-radius: 12px; color: #526276; font-size: 13px; font-weight: 700;
      transition: .25s ease;
      white-space: nowrap;
    }
    .nav-links a:hover, .nav-links a.active { color: #0877a9; background: #eaf8fc; }
    .nav-links .nav-highlight { color: white; background: var(--primary-gradient); box-shadow: 0 8px 20px rgba(14,165,233,.18); }
    .nav-links .nav-highlight:hover { color: white; transform: translateY(-2px); }
    .menu-toggle { display: none; border: 0; background: #edf7fa; color: #0877a9; border-radius: 12px; padding: 10px 13px; font-size: 22px; }
    .hero {
      position: relative;
      min-height: 730px;
      padding: 170px 0 80px;
      color: white;
      background:
        linear-gradient(90deg, rgba(8, 28, 45, .91) 0%, rgba(8, 47, 58, .72) 48%, rgba(8, 47, 58, .30) 100%),
        url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
      overflow: hidden;
    }
    .hero::after {
      content: ""; position: absolute; inset: auto 0 0; height: 130px;
      background: linear-gradient(transparent, var(--page-bg));
      pointer-events: none;
    }
    .hero-content { position: relative; z-index: 2; max-width: 790px; }
    .hero-kicker { display: flex; align-items: center; gap: 12px; color: #c8fce0; font-size: 14px; font-weight: 800; }
    .hero-kicker span { width: 32px; height: 2px; background: #5ee6a5; }
    .hero h1 { max-width: 780px; margin: 22px 0 20px; font-size: clamp(42px, 7vw, 76px); line-height: 1.08; letter-spacing: -.06em; font-weight: 950; }
    .hero-copy { max-width: 700px; margin: 0; color: rgba(255,255,255,.82); font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 32px; }
    .btn {
      min-height: 50px; display: inline-flex; align-items: center; justify-content: center; gap: 9px;
      padding: 13px 21px; border: 1px solid transparent; border-radius: 15px;
      font-size: 14px; font-weight: 850; transition: .25s ease;
    }
    .btn-primary { color: white; background: var(--primary-gradient); box-shadow: 0 13px 28px rgba(14,165,233,.25); }
    .btn-primary:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 17px 32px rgba(14,165,233,.34); }
    .btn-light { color: white; border-color: rgba(255,255,255,.30); background: rgba(255,255,255,.10); }
    .btn-light:hover { background: rgba(255,255,255,.20); transform: translateY(-3px); }
    .hero-badges { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 48px; }
    .hero-badge {
      display: flex; align-items: center; gap: 10px; min-width: 155px; padding: 13px 16px;
      border: 1px solid rgba(255,255,255,.17); border-radius: 17px; background: rgba(7, 30, 42, .36);
    }
    .hero-badge strong { display: block; font-size: 20px; line-height: 1; }
    .hero-badge small { display: block; color: rgba(255,255,255,.68); font-size: 11px; margin-top: 5px; }
    .hero-badge i { color: #75f3b2; font-size: 20px; font-style: normal; }
    .hero-dots { position: absolute; z-index: 3; right: 8%; bottom: 92px; display: flex; gap: 8px; }
    .hero-dots button { width: 28px; height: 5px; padding: 0; border: 0; border-radius: 99px; background: rgba(255,255,255,.35); }
    .hero-dots button.active { width: 54px; background: #7af0b7; }
    .notice-bar { padding: 14px 0; color: white; background: #102033; }
    .notice-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .notice-inner p { margin: 0; font-size: 14px; }
    .countdown { display: flex; gap: 8px; align-items: center; color: #bdfbd7; font-weight: 900; }
    .time-box { min-width: 39px; padding: 5px 7px; text-align: center; border-radius: 9px; color: white; background: rgba(255,255,255,.12); }
    .intro-grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: 54px; align-items: center; }
    .intro-image { position: relative; min-height: 430px; overflow: hidden; border-radius: var(--card-radius); box-shadow: var(--shadow-strong); }
    .intro-image img { width: 100%; height: 100%; min-height: 430px; object-fit: cover; }
    .floating-note { position: absolute; left: 24px; bottom: 24px; max-width: 270px; padding: 17px; border-radius: 20px; color: white; background: rgba(16,32,51,.83); }
    .floating-note strong { display: block; font-size: 19px; }
    .floating-note span { display: block; margin-top: 5px; color: #c8d5de; font-size: 12px; }
    .check-list { display: grid; gap: 17px; margin: 28px 0 0; padding: 0; list-style: none; }
    .check-list li { display: flex; gap: 12px; color: #425367; font-size: 15px; }
    .check-list li::before { content: "✓"; flex: 0 0 24px; display: grid; place-items: center; height: 24px; color: #0877a9; border-radius: 50%; background: #ddf6fb; font-weight: 900; }
    .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .feature-card, .product-card, .news-card, .quote-card, .audience-card, .faq-item {
      border: 1px solid rgba(220,231,238,.85); border-radius: var(--card-radius); background: var(--surface);
      box-shadow: var(--shadow); transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
    }
    .feature-card:hover, .product-card:hover, .news-card:hover, .quote-card:hover, .audience-card:hover { transform: translateY(-6px) scale(1.01); box-shadow: var(--shadow-strong); border-color: rgba(14,165,233,.28); }
    .feature-card { min-height: 235px; padding: 27px; }
    .icon-box { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 16px; color: white; background: var(--primary-gradient); font-size: 23px; box-shadow: 0 10px 24px rgba(14,165,233,.18); }
    .feature-card h3, .product-card h3, .audience-card h3 { margin: 20px 0 9px; font-size: 20px; line-height: 1.3; }
    .feature-card p, .product-card p, .audience-card p { margin: 0; color: var(--muted); font-size: 14px; }
    .product-grid { display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 20px; align-items: stretch; }
    .product-card { overflow: hidden; }
    .product-card:first-child { grid-row: span 2; }
    .product-card img { width: 100%; height: 210px; object-fit: cover; }
    .product-card:first-child img { height: 315px; }
    .product-body { padding: 23px; }
    .product-meta { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 10px; color: #0877a9; font-size: 12px; font-weight: 800; }
    .dark-panel { padding: 58px; border-radius: 34px; color: white; background: var(--dark-gradient); box-shadow: var(--shadow-strong); }
    .dark-panel .section-title { max-width: 700px; }
    .dark-panel p { color: rgba(255,255,255,.74); }
    .principle-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 34px; }
    .principle { padding: 20px; border: 1px solid rgba(255,255,255,.15); border-radius: 20px; background: rgba(255,255,255,.08); }
    .principle strong { display: block; margin-bottom: 7px; font-size: 18px; }
    .principle span { color: rgba(255,255,255,.68); font-size: 13px; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
    .steps::before { content: ""; position: absolute; top: 25px; left: 8%; right: 8%; height: 2px; background: linear-gradient(90deg,#0ea5e9,#22c55e); opacity: .25; }
    .step { position: relative; z-index: 1; padding: 0 17px; text-align: center; }
    .step-number { width: 50px; height: 50px; display: grid; place-items: center; margin: 0 auto 18px; border: 6px solid var(--page-bg); border-radius: 50%; color: white; background: var(--primary-gradient); font-weight: 900; box-shadow: 0 0 0 2px rgba(14,165,233,.22); }
    .step h3 { margin: 0 0 7px; font-size: 18px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .stats { padding: 31px 0; background: white; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .stat { display: flex; align-items: center; gap: 15px; padding: 10px 18px; border-right: 1px solid var(--line); }
    .stat:last-child { border-right: 0; }
    .stat-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; color: #0877a9; background: #e6f8fc; font-size: 18px; }
    .stat strong { display: block; font-size: 29px; line-height: 1; letter-spacing: -.04em; }
    .stat span { display: block; color: var(--muted); font-size: 12px; margin-top: 6px; }
    .story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .quote-card { padding: 30px; }
    .quote-mark { color: #22c55e; font-size: 42px; line-height: .7; font-weight: 900; }
    .quote-card blockquote { margin: 20px 0; color: #35485c; font-size: 17px; }
    .user-line { display: flex; align-items: center; gap: 12px; }
    .avatar { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%; color: white; background: var(--dark-gradient); font-weight: 900; }
    .user-line strong { display: block; font-size: 14px; }
    .user-line span { color: var(--muted); font-size: 12px; }
    .stars { margin-left: auto; color: var(--orange); letter-spacing: 2px; font-size: 13px; }
    .audience-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 17px; }
    .audience-card { padding: 24px; }
    .audience-card .badge { margin-bottom: 18px; }
    .badge { display: inline-flex; align-items: center; padding: 6px 11px; border-radius: 999px; color: #0877a9; background: #eaf8fc; font-size: 11px; font-weight: 900; }
    .news-layout { display: grid; grid-template-columns: 1.2fr .8fr; gap: 22px; }
    .news-list { display: grid; gap: 12px; }
    .news-card { display: flex; align-items: center; gap: 18px; padding: 16px; }
    .news-card img { width: 135px; height: 96px; flex: 0 0 135px; border-radius: 18px; object-fit: cover; }
    .news-card time { color: #0e9a76; font-size: 11px; font-weight: 900; }
    .news-card h3 { margin: 6px 0 4px; font-size: 17px; line-height: 1.35; }
    .news-card p { margin: 0; color: var(--muted); font-size: 13px; }
    .trend-card { min-height: 100%; padding: 30px; border-radius: var(--card-radius); color: white; background: linear-gradient(145deg,#0f4050,#102033); }
    .trend-card h3 { margin: 15px 0 11px; font-size: 25px; }
    .trend-card p { color: rgba(255,255,255,.70); font-size: 14px; }
    .trend-points { display: grid; gap: 15px; margin-top: 26px; }
    .trend-points div { display: flex; justify-content: space-between; gap: 18px; padding-bottom: 13px; border-bottom: 1px solid rgba(255,255,255,.13); font-size: 13px; }
    .trend-points b { color: #84f2b8; }
    .faq-list { display: grid; gap: 12px; max-width: 850px; }
    .faq-item { overflow: hidden; }
    .faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 21px 24px; border: 0; color: var(--text); background: white; text-align: left; font-weight: 850; }
    .faq-question span:last-child { color: #0e9a76; font-size: 24px; transition: transform .25s ease; }
    .faq-answer { max-height: 0; overflow: hidden; padding: 0 24px; color: var(--muted); font-size: 14px; transition: max-height .35s ease, padding .35s ease; }
    .faq-item.open .faq-answer { max-height: 180px; padding: 0 24px 22px; }
    .faq-item.open .faq-question span:last-child { transform: rotate(45deg); }
    .cta-panel { position: relative; overflow: hidden; padding: 62px; border-radius: 34px; color: white; background: var(--primary-gradient); box-shadow: var(--shadow-strong); }
    .cta-panel::after { content: "AI"; position: absolute; right: 7%; bottom: -45px; color: rgba(255,255,255,.12); font-size: 190px; font-weight: 950; line-height: 1; }
    .cta-panel > * { position: relative; z-index: 1; }
    .cta-panel h2 { max-width: 700px; margin: 0 0 13px; font-size: clamp(30px,4vw,50px); line-height: 1.15; letter-spacing: -.05em; }
    .cta-panel p { max-width: 690px; margin: 0; color: rgba(255,255,255,.84); }
    .cta-panel .btn { margin-top: 27px; color: #0877a9; background: white; }
    footer { padding: 62px 0 28px; color: #a7bac8; background: #0d1d2d; }
    .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 35px; padding-bottom: 38px; border-bottom: 1px solid rgba(255,255,255,.11); }
    footer .brand { color: white; }
    footer .brand-text span { color: #89a0b2; }
    .footer-intro { max-width: 290px; margin: 18px 0 0; font-size: 13px; }
    footer h3 { margin: 0 0 16px; color: white; font-size: 14px; }
    footer ul { display: grid; gap: 9px; margin: 0; padding: 0; list-style: none; font-size: 13px; }
    footer li a:hover { color: #82f1b7; }
    .contact-line { margin: 0 0 8px; font-size: 13px; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; font-size: 12px; }
    .footer-bottom a:hover { color: white; }
    @media (max-width: 1100px) {
      .nav-links a { padding-left: 7px; padding-right: 7px; font-size: 12px; }
      .brand { min-width: 180px; }
      .feature-grid { grid-template-columns: repeat(2, 1fr); }
      .audience-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 900px) {
      .nav-links { display: none; position: absolute; top: 76px; left: 20px; right: 20px; padding: 12px; flex-direction: column; align-items: stretch; border: 1px solid var(--line); border-radius: 20px; background: white; box-shadow: var(--shadow-strong); }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 13px 15px; }
      .menu-toggle { display: block; }
      .intro-grid, .news-layout { grid-template-columns: 1fr; }
      .product-grid { grid-template-columns: repeat(2, 1fr); }
      .product-card:first-child { grid-row: auto; grid-column: span 2; }
      .product-card:first-child img, .product-card img { height: 245px; }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .stat:nth-child(2) { border-right: 0; }
      .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); padding-bottom: 18px; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 640px) {
      .container { width: min(var(--container), calc(100% - 28px)); }
      .section { padding: 68px 0; }
      .hero { min-height: 690px; padding-top: 135px; }
      .hero h1 { font-size: 43px; }
      .hero-copy { font-size: 16px; }
      .hero-badges { gap: 8px; margin-top: 34px; }
      .hero-badge { min-width: 140px; padding: 11px 12px; }
      .notice-inner { align-items: flex-start; flex-direction: column; gap: 10px; }
      .countdown { width: 100%; justify-content: space-between; }
      .feature-grid, .product-grid, .story-grid, .audience-grid, .stats-grid { grid-template-columns: 1fr; }
      .product-card:first-child { grid-column: auto; }
      .product-card:first-child img, .product-card img { height: 220px; }
      .principle-row, .steps { grid-template-columns: 1fr; gap: 22px; }
      .steps::before { top: 24px; bottom: 24px; left: 50%; right: auto; width: 2px; height: auto; }
      .step { padding: 0 35px; text-align: left; display: grid; grid-template-columns: 50px 1fr; column-gap: 18px; }
      .step-number { grid-row: span 2; margin: 0; }
      .step h3 { align-self: end; }
      .step p { align-self: start; }
      .dark-panel, .cta-panel { padding: 33px 25px; border-radius: 27px; }
      .news-card { align-items: flex-start; }
      .news-card img { width: 98px; height: 84px; flex-basis: 98px; }
      .news-card h3 { font-size: 15px; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .footer-bottom { flex-direction: column; }
    }

/* roulang page: category1 */
:root {
      --primary-gradient: linear-gradient(135deg,#0ea5e9 0%,#22c55e 52%,#10b981 100%);
      --dark-gradient: linear-gradient(135deg,#102033 0%,#123c55 58%,#0b7661 100%);
      --page-bg:#f4f8fb;
      --surface:#fff;
      --text:#102033;
      --muted:#64748b;
      --line:#dce7ee;
      --orange:#f97316;
      --card-radius:28px;
      --shadow:0 24px 70px rgba(16,32,51,.10);
      --shadow-strong:0 28px 80px rgba(16,32,51,.16);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--text);background:var(--page-bg);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.7;overflow-x:hidden}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 40px));margin:auto}
    .section{padding:92px 0}
    .section-head{max-width:730px;margin-bottom:40px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid rgba(14,165,233,.18);border-radius:999px;color:#0877a9;background:#e9f8ff;font-size:13px;font-weight:800}
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 5px rgba(34,197,94,.12)}
    .section-title{margin:16px 0 12px;font-size:clamp(30px,4vw,48px);line-height:1.16;letter-spacing:-.045em;font-weight:900}
    .section-copy{margin:0;color:var(--muted);font-size:17px}
    .site-header{position:fixed;z-index:50;inset:0 0 auto;background:rgba(255,255,255,.92);border-bottom:1px solid rgba(220,231,238,.85);backdrop-filter:blur(18px)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:inline-flex;align-items:center;gap:11px;min-width:205px}
    .brand-mark{width:40px;height:40px;display:grid;place-items:center;color:#fff;border-radius:14px;background:var(--primary-gradient);box-shadow:0 10px 24px rgba(14,165,233,.25);font-size:20px;font-weight:900}
    .brand-text{display:flex;flex-direction:column;line-height:1.1}
    .brand-text strong{font-size:15px;letter-spacing:-.02em}
    .brand-text span{color:#738397;font-size:11px;margin-top:5px}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:4px}
    .nav-links a{padding:10px 11px;border-radius:12px;color:#526276;font-size:13px;font-weight:700;transition:.25s ease;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:#0877a9;background:#eaf8fc}
    .nav-links .nav-highlight{color:#fff;background:var(--primary-gradient);box-shadow:0 8px 20px rgba(14,165,233,.18)}
    .nav-links .nav-highlight:hover{color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;border:0;background:#edf7fa;color:#0877a9;border-radius:12px;padding:10px 13px;font-size:22px}
    .page-banner{position:relative;padding:166px 0 92px;color:#fff;background:linear-gradient(90deg,rgba(8,28,45,.92),rgba(8,47,58,.7),rgba(8,47,58,.28)),url("/assets/images/backpic/back-2.webp") center/cover no-repeat;overflow:hidden}
    .page-banner:after{content:"";position:absolute;inset:auto 0 0;height:90px;background:linear-gradient(transparent,var(--page-bg))}
    .banner-content{position:relative;z-index:1;max-width:780px}
    .banner-kicker{color:#b9f8d5;font-size:14px;font-weight:800;letter-spacing:.08em}
    .page-banner h1{margin:18px 0 18px;font-size:clamp(42px,7vw,72px);line-height:1.08;letter-spacing:-.06em;font-weight:950}
    .banner-copy{max-width:680px;color:rgba(255,255,255,.82);font-size:18px}
    .banner-metrics{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
    .metric-badge{min-width:150px;padding:13px 16px;border:1px solid rgba(255,255,255,.2);border-radius:18px;background:rgba(7,30,42,.4)}
    .metric-badge strong{display:block;color:#fff;font-size:22px;line-height:1.1}
    .metric-badge span{display:block;color:rgba(255,255,255,.7);font-size:12px;margin-top:5px}
    .intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
    .image-card{overflow:hidden;border-radius:var(--card-radius);box-shadow:var(--shadow-strong);background:#dceff3}
    .image-card img{width:100%;height:430px;object-fit:cover}
    .check-list{display:grid;gap:15px;margin:27px 0 0;padding:0;list-style:none}
    .check-list li{display:flex;gap:12px;color:#425367;font-size:15px}
    .check-list li:before{content:"✓";flex:0 0 25px;display:grid;place-items:center;height:25px;color:#0877a9;border-radius:50%;background:#e2f7fc;font-weight:900}
    .product-layout{display:grid;grid-template-columns:250px 1fr;gap:28px;align-items:start}
    .side-panel{position:sticky;top:102px;padding:25px;border-radius:var(--card-radius);background:var(--dark-gradient);color:#fff;box-shadow:var(--shadow)}
    .side-panel h3{margin:0 0 15px;font-size:21px}
    .side-panel p{margin:0;color:rgba(255,255,255,.7);font-size:14px}
    .side-stats{display:grid;gap:15px;margin-top:28px}
    .side-stat{padding-top:15px;border-top:1px solid rgba(255,255,255,.16)}
    .side-stat strong{display:block;color:#8af3bd;font-size:26px}
    .side-stat span{color:rgba(255,255,255,.65);font-size:12px}
    .product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
    .product-card{overflow:hidden;border:1px solid var(--line);border-radius:var(--card-radius);background:var(--surface);box-shadow:var(--shadow);transition:.28s ease}
    .product-card:hover{transform:translateY(-5px) scale(1.01);box-shadow:var(--shadow-strong);border-color:#a9dfea}
    .product-card img{width:100%;height:210px;object-fit:cover}
    .product-body{padding:24px}
    .tag{display:inline-flex;padding:6px 10px;border-radius:999px;background:#eaf9ef;color:#11814e;font-size:12px;font-weight:800}
    .product-body h3{margin:13px 0 7px;font-size:22px;line-height:1.25}
    .product-body p{margin:0;color:var(--muted);font-size:14px}
    .product-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
    .product-meta span{padding:6px 9px;border-radius:10px;background:#f2f7fa;color:#526276;font-size:12px}
    .split-section{background:#fff}
    .feature-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .feature-card{min-height:220px;padding:27px;border:1px solid var(--line);border-radius:var(--card-radius);background:linear-gradient(150deg,#fff,#f4fbfc);transition:.25s ease}
    .feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .feature-icon{width:46px;height:46px;display:grid;place-items:center;border-radius:15px;background:var(--primary-gradient);color:#fff;font-size:22px}
    .feature-card h3{margin:22px 0 8px;font-size:20px}
    .feature-card p{margin:0;color:var(--muted);font-size:14px}
    .spec-section{background:var(--dark-gradient);color:#fff}
    .spec-section .eyebrow{color:#b8f7d0;background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.18)}
    .spec-section .section-copy{color:rgba(255,255,255,.68)}
    .spec-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:stretch}
    .spec-list{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}
    .spec-item{padding:20px;border:1px solid rgba(255,255,255,.14);border-radius:20px;background:rgba(255,255,255,.07)}
    .spec-item strong{display:block;color:#9bf4c1;font-size:22px}
    .spec-item span{display:block;color:rgba(255,255,255,.7);font-size:13px;margin-top:3px}
    .compat-card{padding:30px;border-radius:var(--card-radius);background:#fff;color:var(--text);box-shadow:var(--shadow-strong)}
    .compat-card h3{margin:0 0 18px;font-size:24px}
    .compat-list{display:flex;flex-wrap:wrap;gap:10px}
    .compat-list span{padding:10px 13px;border-radius:12px;background:#eef8f9;color:#0877a9;font-size:13px;font-weight:700}
    .scene-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:22px}
    .scene-main{min-height:330px;padding:34px;border-radius:var(--card-radius);color:#fff;background:linear-gradient(90deg,rgba(8,30,43,.9),rgba(8,72,71,.48)),url("/assets/images/coverpic/cover-5.webp") center/cover;box-shadow:var(--shadow)}
    .scene-main h3{max-width:470px;margin:74px 0 10px;font-size:30px;line-height:1.2}
    .scene-main p{max-width:500px;color:rgba(255,255,255,.78);font-size:15px}
    .scene-side{display:grid;gap:22px}
    .scene-small{padding:25px;border-radius:var(--card-radius);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .scene-small h3{margin:0 0 8px;font-size:20px}
    .scene-small p{margin:0;color:var(--muted);font-size:14px}
    .cta{padding:58px 0;background:linear-gradient(120deg,#e6faff,#eafbf0)}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:26px;padding:38px 42px;border-radius:var(--card-radius);background:var(--primary-gradient);color:#fff;box-shadow:var(--shadow-strong)}
    .cta-box h2{margin:0 0 8px;font-size:clamp(27px,4vw,42px);line-height:1.2}
    .cta-box p{margin:0;color:rgba(255,255,255,.82)}
    .btn{min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 21px;border:1px solid transparent;border-radius:15px;font-size:14px;font-weight:850;transition:.25s ease}
    .btn-light{color:#0877a9;background:#fff;box-shadow:0 10px 25px rgba(0,0,0,.12)}
    .btn-light:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 15px 30px rgba(0,0,0,.17)}
    :focus-visible{outline:3px solid #f97316;outline-offset:3px}
    footer{padding:68px 0 25px;background:#0f2232;color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr 1fr;gap:35px}
    footer .brand-text strong{color:#fff}
    footer .brand-text span{color:#93a8b5}
    .footer-intro{max-width:320px;margin:18px 0 0;color:#9eb1bd;font-size:14px}
    footer h3{margin:0 0 16px;font-size:15px}
    footer ul{display:grid;gap:9px;margin:0;padding:0;list-style:none}
    footer li,footer a,.contact-line{color:#9eb1bd;font-size:13px}
    footer a:hover{color:#7eeab4}
    .contact-line{margin:0 0 9px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:45px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);color:#8298a7;font-size:12px}
    @media(max-width:1024px){.nav-links a{padding:9px 7px;font-size:12px}.product-layout{grid-template-columns:210px 1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 28px))}.section{padding:68px 0}.menu-toggle{display:block}.nav-links{display:none;position:absolute;left:14px;right:14px;top:68px;padding:12px;align-items:stretch;flex-direction:column;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow-strong)}.nav-links.open{display:flex}.nav-links a{padding:13px 14px}.brand{min-width:0}.brand-text strong{font-size:13px}.intro-grid,.spec-grid,.scene-grid{grid-template-columns:1fr}.product-layout{grid-template-columns:1fr}.side-panel{position:static}.feature-columns{grid-template-columns:1fr 1fr}.cta-box{align-items:flex-start;flex-direction:column;padding:30px}}
    @media(max-width:520px){.page-banner{padding:138px 0 70px}.page-banner h1{font-size:43px}.banner-copy{font-size:16px}.banner-metrics{display:grid;grid-template-columns:1fr 1fr}.metric-badge{min-width:0}.intro-grid{gap:30px}.image-card img{height:300px}.product-grid,.feature-columns,.spec-list{grid-template-columns:1fr}.product-card img{height:190px}.scene-main{min-height:300px;padding:25px}.scene-main h3{margin-top:80px;font-size:26px}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column;gap:8px}.cta-box .btn{width:100%}}

/* roulang page: category2 */
:root {
      --primary-gradient: linear-gradient(135deg,#0ea5e9 0%,#22c55e 52%,#10b981 100%);
      --dark-gradient: linear-gradient(135deg,#102033 0%,#123c55 58%,#0b7661 100%);
      --page-bg:#f4f8fb;
      --surface:#fff;
      --text:#102033;
      --muted:#64748b;
      --line:#dce7ee;
      --orange:#f97316;
      --card-radius:28px;
      --shadow:0 24px 70px rgba(16,32,51,.10);
      --shadow-strong:0 28px 80px rgba(16,32,51,.16);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--text);background:var(--page-bg);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.7;overflow-x:hidden}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .section{padding:92px 0}
    .section-head{max-width:750px;margin-bottom:40px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid rgba(14,165,233,.18);border-radius:999px;color:#0877a9;background:#e9f8ff;font-size:13px;font-weight:800;letter-spacing:.04em}
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 5px rgba(34,197,94,.12)}
    .section-title{margin:16px 0 12px;font-size:clamp(30px,4vw,48px);line-height:1.16;letter-spacing:-.045em;font-weight:900}
    .section-copy{margin:0;color:var(--muted);font-size:17px}
    .site-header{position:fixed;z-index:50;inset:0 0 auto;background:rgba(255,255,255,.92);border-bottom:1px solid rgba(220,231,238,.85);backdrop-filter:blur(18px)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:inline-flex;align-items:center;gap:11px;min-width:205px}
    .brand-mark{width:40px;height:40px;display:grid;place-items:center;color:#fff;border-radius:14px;background:var(--primary-gradient);box-shadow:0 10px 24px rgba(14,165,233,.25);font-size:20px;font-weight:900}
    .brand-text{display:flex;flex-direction:column;line-height:1.1}
    .brand-text strong{font-size:15px;letter-spacing:-.02em}
    .brand-text span{color:#738397;font-size:11px;margin-top:5px}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:4px}
    .nav-links a{padding:10px 11px;border-radius:12px;color:#526276;font-size:13px;font-weight:700;transition:.25s ease;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:#0877a9;background:#eaf8fc}
    .nav-links .nav-highlight{color:#fff;background:var(--primary-gradient);box-shadow:0 8px 20px rgba(14,165,233,.18)}
    .nav-links .nav-highlight:hover{color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;border:0;background:#edf7fa;color:#0877a9;border-radius:12px;padding:10px 13px;font-size:22px}
    .page-banner{position:relative;padding:155px 0 78px;color:#fff;background:linear-gradient(90deg,rgba(8,28,45,.93),rgba(8,47,58,.72),rgba(8,47,58,.35)),url("/assets/images/backpic/back-4.webp") center/cover no-repeat;overflow:hidden}
    .page-banner:after{content:"";position:absolute;inset:auto 0 0;height:90px;background:linear-gradient(transparent,var(--page-bg))}
    .banner-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;align-items:end;gap:50px}
    .banner-kicker{display:flex;align-items:center;gap:12px;color:#c8fce0;font-size:14px;font-weight:800}
    .banner-kicker span{width:32px;height:2px;background:#5ee6a5}
    .page-banner h1{max-width:720px;margin:20px 0 17px;font-size:clamp(40px,6vw,70px);line-height:1.08;letter-spacing:-.06em;font-weight:950}
    .banner-copy{max-width:680px;margin:0;color:rgba(255,255,255,.82);font-size:18px}
    .banner-panel{padding:25px;border:1px solid rgba(255,255,255,.2);border-radius:25px;background:rgba(9,35,48,.48);box-shadow:0 22px 60px rgba(0,0,0,.16)}
    .banner-panel strong{display:block;font-size:18px;margin-bottom:14px}
    .signal-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-top:1px solid rgba(255,255,255,.13);font-size:13px;color:rgba(255,255,255,.72)}
    .signal-row b{color:#7af0b7;font-size:16px}
    .btn{min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 21px;border:1px solid transparent;border-radius:15px;font-size:14px;font-weight:850;transition:.25s ease}
    .btn-primary{color:#fff;background:var(--primary-gradient);box-shadow:0 13px 28px rgba(14,165,233,.25)}
    .btn-primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 17px 32px rgba(14,165,233,.34)}
    .btn-outline{color:#0877a9;border-color:#b9dce9;background:#fff}
    .btn-outline:hover{color:#fff;background:var(--primary-gradient);border-color:transparent;transform:translateY(-2px)}
    .btn-light{color:#fff;border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.1)}
    .btn-light:hover{background:rgba(255,255,255,.2);transform:translateY(-3px)}
    .toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:30px}
    .result-badge{display:inline-flex;align-items:center;gap:8px;padding:9px 13px;border-radius:999px;color:#0877a9;background:#e7f8fb;font-size:13px;font-weight:800}
    .result-badge i{width:8px;height:8px;border-radius:50%;background:#22c55e}
    .product-layout{display:grid;grid-template-columns:250px 1fr;gap:28px;align-items:start}
    .side-card,.info-card,.product-card,.feature-card,.scenario-card,.privacy-card{background:var(--surface);border:1px solid rgba(220,231,238,.92);border-radius:var(--card-radius);box-shadow:var(--shadow)}
    .side-card{padding:24px;position:sticky;top:100px}
    .side-card h2{margin:0 0 17px;font-size:18px}
    .side-list{display:grid;gap:8px;margin:0;padding:0;list-style:none}
    .side-list li{padding:11px 13px;border-radius:13px;color:#64748b;font-size:14px}
    .side-list li.current{color:#0877a9;background:#eaf8fc;font-weight:800}
    .side-note{margin-top:24px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
    .product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
    .product-card{overflow:hidden;transition:.28s ease}
    .product-card:hover,.feature-card:hover,.info-card:hover{transform:translateY(-5px) scale(1.01);box-shadow:var(--shadow-strong)}
    .product-image{height:215px;position:relative;overflow:hidden;background:#dff4f4}
    .product-image img{width:100%;height:100%;object-fit:cover;transition:.5s ease}
    .product-card:hover .product-image img{transform:scale(1.05)}
    .product-tag{position:absolute;top:17px;left:17px;padding:6px 10px;border-radius:999px;color:#fff;background:rgba(16,32,51,.76);font-size:11px;font-weight:800}
    .product-content{padding:22px}
    .product-content h3{margin:0 0 9px;font-size:21px;letter-spacing:-.025em}
    .product-content p{margin:0;color:var(--muted);font-size:14px}
    .product-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:17px}
    .meta-chip{padding:6px 9px;border-radius:9px;color:#4d6878;background:#f0f8fa;font-size:11px;font-weight:700}
    .product-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}
    .product-footer strong{color:#0877a9;font-size:14px}
    .text-link{color:#0877a9;font-size:13px;font-weight:800}
    .text-link:hover{color:#f97316}
    .feature-band{background:#f9fcfd}
    .feature-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:58px;align-items:center}
    .feature-visual{min-height:430px;padding:27px;border-radius:var(--card-radius);background:var(--dark-gradient);box-shadow:var(--shadow-strong);color:#fff;position:relative;overflow:hidden}
    .feature-visual:before{content:"";position:absolute;width:240px;height:240px;right:-70px;top:-80px;border-radius:50%;background:rgba(94,230,165,.2);filter:blur(5px)}
    .visual-label{position:relative;display:flex;justify-content:space-between;color:#b7eeda;font-size:12px;font-weight:800}
    .radar{position:relative;width:235px;height:235px;margin:43px auto 20px;border:1px solid rgba(122,240,183,.5);border-radius:50%;background:repeating-radial-gradient(circle,transparent 0 34px,rgba(122,240,183,.22) 35px 36px),linear-gradient(90deg,transparent 49.5%,rgba(122,240,183,.24) 50%,transparent 50.5%),linear-gradient(transparent 49.5%,rgba(122,240,183,.24) 50%,transparent 50.5%)}
    .radar:after{content:"";position:absolute;top:50%;left:50%;width:12px;height:12px;border-radius:50%;background:#7af0b7;box-shadow:0 0 0 10px rgba(122,240,183,.15),0 0 30px #7af0b7;transform:translate(-50%,-50%)}
    .visual-status{display:flex;justify-content:space-between;padding:13px 15px;border-radius:15px;background:rgba(255,255,255,.1);font-size:13px}
    .visual-status b{color:#7af0b7}
    .feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:27px}
    .feature-card{padding:22px;transition:.28s ease}
    .icon-box{width:42px;height:42px;display:grid;place-items:center;border-radius:14px;color:#0877a9;background:#e8f8fb;font-size:20px;margin-bottom:18px}
    .feature-card h3{margin:0 0 8px;font-size:17px}
    .feature-card p{margin:0;color:var(--muted);font-size:14px}
    .stats{padding:38px 0;background:var(--dark-gradient);color:#fff}
    .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
    .stat{padding:20px 22px;border-right:1px solid rgba(255,255,255,.16)}
    .stat:last-child{border-right:0}
    .stat strong{display:block;font-size:36px;line-height:1.1;color:#85f2ba;letter-spacing:-.05em}
    .stat span{display:block;margin-top:8px;color:rgba(255,255,255,.7);font-size:13px}
    .support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .info-card{padding:25px;transition:.28s ease}
    .info-card h3{margin:0 0 9px;font-size:20px}
    .info-card p{margin:0;color:var(--muted);font-size:14px}
    .info-list{display:grid;gap:12px;margin:17px 0 0;padding:0;list-style:none}
    .info-list li{display:flex;gap:9px;color:#536578;font-size:13px}
    .info-list li:before{content:"";width:7px;height:7px;flex:0 0 7px;margin-top:9px;border-radius:50%;background:#22c55e}
    .privacy-section{padding-top:25px}
    .privacy-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
    .privacy-card{padding:28px}
    .privacy-card h3{margin:0 0 10px;font-size:21px}
    .privacy-card p{margin:0;color:var(--muted);font-size:14px}
    .cta{padding:35px 0 95px}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:42px 48px;color:#fff;border-radius:var(--card-radius);background:var(--primary-gradient);box-shadow:var(--shadow-strong)}
    .cta-box h2{margin:0 0 8px;font-size:clamp(25px,3vw,38px);line-height:1.2}
    .cta-box p{margin:0;color:rgba(255,255,255,.83)}
    .cta-box .btn{background:#fff;color:#0877a9;box-shadow:none}
    footer{padding:62px 0 25px;color:#b5c3ce;background:#0c1d2b}
    .footer-grid{display:grid;grid-template-columns:1.3fr .8fr .8fr 1fr;gap:35px}
    footer .brand{color:#fff}
    footer .brand-text span{color:#91a8b7}
    .footer-intro{max-width:300px;margin:20px 0 0;color:#8ea2b2;font-size:13px}
    footer h3{margin:0 0 17px;color:#fff;font-size:15px}
    footer ul{display:grid;gap:9px;margin:0;padding:0;list-style:none}
    footer li,footer a,.contact-line{color:#91a8b7;font-size:13px}
    footer a:hover{color:#79edb0}
    .contact-line{margin:0 0 9px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:42px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);font-size:12px}
    @media(max-width:1024px){.nav-links a{padding:9px 7px;font-size:12px}.banner-inner{grid-template-columns:1fr}.banner-panel{max-width:420px}.product-layout{grid-template-columns:210px 1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 30px))}.section{padding:68px 0}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:75px;left:15px;right:15px;padding:12px;align-items:stretch;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-strong)}.nav-links.open{display:flex}.nav-links a{padding:13px 14px}.page-banner{padding:130px 0 68px}.product-layout{grid-template-columns:1fr}.side-card{position:static}.side-list{grid-template-columns:repeat(2,1fr)}.product-grid{grid-template-columns:1fr}.feature-grid,.privacy-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.16)}.cta-box{align-items:flex-start;flex-direction:column;padding:32px}.footer-bottom{flex-direction:column;gap:8px}}
    @media(max-width:520px){.brand{min-width:0}.brand-text strong{font-size:13px}.brand-text span{font-size:10px}.page-banner h1{font-size:42px}.banner-copy{font-size:16px}.toolbar{align-items:flex-start;flex-direction:column}.side-list{grid-template-columns:1fr 1fr}.feature-list,.support-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:1fr 1fr}.stat{padding:16px 8px}.stat strong{font-size:29px}.stat span{font-size:12px}.footer-grid{grid-template-columns:1fr}.footer-bottom{font-size:11px}}

/* roulang page: category3 */
:root {
    --primary-gradient: linear-gradient(135deg, #0ea5e9 0%, #22c55e 52%, #10b981 100%);
    --dark-gradient: linear-gradient(135deg, #102033 0%, #123c55 58%, #0b7661 100%);
    --page-bg: #f4f8fb;
    --surface: #ffffff;
    --text: #102033;
    --muted: #64748b;
    --line: #dce7ee;
    --orange: #f97316;
    --card-radius: 28px;
    --shadow: 0 24px 70px rgba(16, 32, 51, .10);
    --shadow-strong: 0 28px 80px rgba(16, 32, 51, .16);
    --container: 1180px;
    }
    html { scroll-behavior: smooth; }
    body {
    margin: 0;
    color: var(--text);
    background: var(--page-bg);
    font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button, input, textarea { font: inherit; }
    button { cursor: pointer; }
    .container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
    .section { padding: 96px 0; }
    .section-head { max-width: 720px; margin-bottom: 42px; }
    .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 13px;
    border: 1px solid rgba(14,165,233,.18);
    border-radius: 999px;
    color: #0877a9;
    background: #e9f8ff;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .04em;
    }
    .eyebrow::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 0 5px rgba(34,197,94,.12);
    }
    .section-title {
    margin: 16px 0 12px;
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.16;
    letter-spacing: -.045em;
    font-weight: 900;
    }
    .section-copy { margin: 0; color: var(--muted); font-size: 17px; }
    .site-header {
    position: fixed;
    z-index: 50;
    inset: 0 0 auto;
    background: rgba(255,255,255,.90);
    border-bottom: 1px solid rgba(220,231,238,.85);
    backdrop-filter: blur(18px);
    }
    .nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; min-width: 205px; }
    .brand-mark {
    width: 40px; height: 40px; display: grid; place-items: center;
    color: white; border-radius: 14px; background: var(--primary-gradient);
    box-shadow: 0 10px 24px rgba(14,165,233,.25);
    font-size: 20px; font-weight: 900;
    }
    .brand-text { display: flex; flex-direction: column; line-height: 1.1; }
    .brand-text strong { font-size: 15px; letter-spacing: -.02em; }
    .brand-text span { color: #738397; font-size: 11px; margin-top: 5px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 4px; }
    .nav-links a {
    padding: 10px 11px; border-radius: 12px; color: #526276; font-size: 13px; font-weight: 700;
    transition: .25s ease;
    white-space: nowrap;
    }
    .nav-links a:hover, .nav-links a.active { color: #0877a9; background: #eaf8fc; }
    .nav-links .nav-highlight { color: white; background: var(--primary-gradient); box-shadow: 0 8px 20px rgba(14,165,233,.18); }
    .nav-links .nav-highlight:hover { color: white; transform: translateY(-2px); }
    .menu-toggle { display: none; border: 0; background: #edf7fa; color: #0877a9; border-radius: 12px; padding: 10px 13px; font-size: 22px; }
    .product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    }
    .product-card {
    background: white;
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-strong);
    }
    .product-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    }
    .product-card .content {
    padding: 1.5rem;
    }
    .product-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    }
    .support-block {
    margin-bottom: 3rem;
    }
    .support-block h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    }
    .footer {
    background: #f8fafc;
    padding: 4rem 0 2rem;
    }
    .footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
    }
    .mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: white;
    z-index: 100;
    padding: 120px 20px 40px;
    display: none;
    }
    .mobile-menu.show {
    display: block;
    }
    .mobile-menu a {
    display: block;
    padding: 15px 0;
    font-size: 1.25rem;
    color: var(--text);
    border-bottom: 1px solid #eee;
    }
    @media (max-width: 768px) {
    .menu-toggle {
    display: block;
    }
    .nav-links {
    display: none;
    }
    }

/* roulang page: category4 */
:root {
        --primary-gradient: linear-gradient(135deg,#0ea5e9 0%,#22c55e 52%,#10b981 100%);
        --dark-gradient: linear-gradient(135deg,#102033 0%,#123c55 58%,#0b7661 100%);
        --page-bg:#f4f8fb;
        --surface:#fff;
        --text:#102033;
        --muted:#64748b;
        --line:#dce7ee;
        --orange:#f97316;
        --card-radius:28px;
        --shadow:0 24px 70px rgba(16,32,51,.10);
        --shadow-strong:0 28px 80px rgba(16,32,51,.16);
        --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--text);background:var(--page-bg);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.7;overflow-x:hidden}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button{font:inherit;cursor:pointer}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .section{padding:92px 0}
    .section-head{max-width:720px;margin-bottom:40px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid rgba(14,165,233,.18);border-radius:999px;color:#0877a9;background:#e9f8ff;font-size:13px;font-weight:800}
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 5px rgba(34,197,94,.12)}
    .section-title{margin:16px 0 12px;font-size:clamp(30px,4vw,48px);line-height:1.16;letter-spacing:-.045em;font-weight:900}
    .section-copy{margin:0;color:var(--muted);font-size:17px}
    .site-header{position:fixed;z-index:50;inset:0 0 auto;background:rgba(255,255,255,.92);border-bottom:1px solid rgba(220,231,238,.85);backdrop-filter:blur(18px)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:inline-flex;align-items:center;gap:11px;min-width:205px}
    .brand-mark{width:40px;height:40px;display:grid;place-items:center;color:#fff;border-radius:14px;background:var(--primary-gradient);box-shadow:0 10px 24px rgba(14,165,233,.25);font-size:20px;font-weight:900}
    .brand-text{display:flex;flex-direction:column;line-height:1.1}
    .brand-text strong{font-size:15px;letter-spacing:-.02em}
    .brand-text span{color:#738397;font-size:11px;margin-top:5px}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:4px}
    .nav-links a{padding:10px 11px;border-radius:12px;color:#526276;font-size:13px;font-weight:700;transition:.25s ease;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:#0877a9;background:#eaf8fc}
    .nav-links .nav-highlight{color:#fff;background:var(--primary-gradient);box-shadow:0 8px 20px rgba(14,165,233,.18)}
    .nav-links .nav-highlight:hover{color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;border:0;background:#edf7fa;color:#0877a9;border-radius:12px;padding:10px 13px;font-size:22px}
    .page-banner{position:relative;padding:164px 0 86px;color:#fff;background:linear-gradient(90deg,rgba(8,28,45,.92),rgba(8,47,58,.68)),url("/assets/images/backpic/back-4.webp") center/cover;overflow:hidden}
    .page-banner:after{content:"";position:absolute;right:-80px;bottom:-140px;width:420px;height:420px;border:1px solid rgba(255,255,255,.18);border-radius:50%;box-shadow:0 0 0 34px rgba(255,255,255,.04),0 0 0 70px rgba(255,255,255,.025)}
    .banner-content{position:relative;z-index:1;max-width:780px}
    .banner-content h1{margin:20px 0 16px;font-size:clamp(40px,6vw,68px);line-height:1.08;letter-spacing:-.06em;font-weight:950}
    .banner-content p{max-width:680px;margin:0;color:rgba(255,255,255,.82);font-size:18px}
    .crumbs{display:flex;gap:10px;color:#c8fce0;font-size:13px;font-weight:700}
    .crumbs span{opacity:.65}
    .btn{min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 21px;border:1px solid transparent;border-radius:15px;font-size:14px;font-weight:850;transition:.25s ease}
    .btn-primary{color:#fff;background:var(--primary-gradient);box-shadow:0 13px 28px rgba(14,165,233,.25)}
    .btn-primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 17px 32px rgba(14,165,233,.34)}
    .btn-outline{color:#0877a9;border-color:#b9dce8;background:#fff}
    .btn-outline:hover{border-color:#0ea5e9;background:#eaf8fc;transform:translateY(-2px)}
    .catalog-layout{display:grid;grid-template-columns:260px 1fr;gap:34px;align-items:start}
    .side-panel{position:sticky;top:100px;padding:25px;border:1px solid var(--line);border-radius:var(--card-radius);background:#fff;box-shadow:var(--shadow)}
    .side-panel h2{margin:0 0 18px;font-size:19px;letter-spacing:-.03em}
    .side-panel p{margin:0 0 18px;color:var(--muted);font-size:14px}
    .side-links{display:grid;gap:8px}
    .side-links a{padding:12px 14px;border-radius:14px;color:#536579;font-size:14px;font-weight:750;transition:.25s ease}
    .side-links a:hover,.side-links a.current{color:#0877a9;background:#eaf8fc}
    .side-metric{margin-top:24px;padding:18px;border-radius:20px;background:var(--dark-gradient);color:#fff}
    .side-metric strong{display:block;font-size:30px;line-height:1.1}
    .side-metric span{display:block;margin-top:5px;color:rgba(255,255,255,.7);font-size:12px}
    .product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
    .product-card{overflow:hidden;border:1px solid var(--line);border-radius:var(--card-radius);background:#fff;box-shadow:var(--shadow);transition:.28s ease}
    .product-card:hover{transform:translateY(-6px) scale(1.01);box-shadow:var(--shadow-strong)}
    .product-card figure{position:relative;height:218px;margin:0;overflow:hidden;background:#dceef2}
    .product-card figure img{width:100%;height:100%;object-fit:cover;transition:.5s ease}
    .product-card:hover figure img{transform:scale(1.05)}
    .product-card figure:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 45%,rgba(10,31,43,.4))}
    .data-badge{position:absolute;z-index:1;top:16px;left:16px;padding:6px 10px;border-radius:999px;color:#0877a9;background:#effcff;font-size:12px;font-weight:850}
    .product-body{padding:23px}
    .product-body h3{margin:0 0 9px;font-size:22px;line-height:1.25;letter-spacing:-.035em}
    .product-body p{min-height:54px;margin:0;color:var(--muted);font-size:14px}
    .product-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid #edf2f5}
    .product-meta span{color:#0877a9;font-size:12px;font-weight:800}
    .product-meta a{color:#f97316;font-size:13px;font-weight:850}
    .feature-band{padding:72px 0;background:var(--dark-gradient);color:#fff}
    .feature-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
    .feature-band .eyebrow{color:#baf8d2;background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.18)}
    .feature-band .section-title{max-width:560px}
    .feature-band .section-copy{color:rgba(255,255,255,.72)}
    .feature-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:28px}
    .feature-list div{padding:17px;border:1px solid rgba(255,255,255,.15);border-radius:18px;background:rgba(255,255,255,.07)}
    .feature-list strong{display:block;font-size:18px}
    .feature-list span{display:block;margin-top:3px;color:rgba(255,255,255,.66);font-size:12px}
    .feature-image{overflow:hidden;border-radius:var(--card-radius);box-shadow:0 24px 60px rgba(0,0,0,.22)}
    .feature-image img{width:100%;height:380px;object-fit:cover}
    .support-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
    .support-card{padding:27px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:var(--shadow);transition:.25s ease}
    .support-card:hover{transform:translateY(-5px);border-color:#9ed9df}
    .support-icon{width:45px;height:45px;display:grid;place-items:center;border-radius:15px;color:#0877a9;background:#eaf8fc;font-size:20px}
    .support-card h3{margin:19px 0 8px;font-size:19px}
    .support-card p{margin:0;color:var(--muted);font-size:14px}
    .number-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:30px}
    .number-item{padding:22px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .number-item strong{display:block;color:#0877a9;font-size:32px;line-height:1}
    .number-item span{display:block;margin-top:8px;color:var(--muted);font-size:13px}
    .cta-panel{padding:48px 54px;border-radius:var(--card-radius);background:var(--primary-gradient);color:#fff;box-shadow:var(--shadow-strong);display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta-panel h2{margin:0 0 8px;font-size:clamp(26px,4vw,40px);line-height:1.2;letter-spacing:-.04em}
    .cta-panel p{margin:0;color:rgba(255,255,255,.82)}
    .cta-panel .btn{color:#0877a9;background:#fff;box-shadow:none}
    .cta-panel .btn:hover{background:#effcff}
    footer{padding:66px 0 24px;background:#0c1b2a;color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr 1fr;gap:34px}
    footer .brand-text strong{color:#fff}
    footer .brand-text span{color:rgba(255,255,255,.54)}
    .footer-intro{max-width:310px;margin:20px 0 0;color:rgba(255,255,255,.58);font-size:14px}
    footer h3{margin:3px 0 15px;font-size:15px}
    footer ul{display:grid;gap:8px;margin:0;padding:0;list-style:none}
    footer li,footer a,.contact-line{color:rgba(255,255,255,.58);font-size:13px;transition:.2s}
    footer a:hover{color:#8af4bb}
    .contact-line{margin:0 0 8px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:45px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);color:rgba(255,255,255,.45);font-size:12px}
    @media(max-width:1024px){.nav-links{gap:0}.nav-links a{padding:9px 7px;font-size:12px}.catalog-layout{grid-template-columns:220px 1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 30px))}.nav-wrap{min-height:70px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:70px;left:15px;right:15px;padding:12px;align-items:stretch;flex-direction:column;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow-strong)}.nav-links.open{display:flex}.nav-links a{padding:13px 14px}.brand{min-width:0}.brand-text strong{font-size:13px}.brand-text span{font-size:10px}.page-banner{padding:130px 0 65px}.catalog-layout,.feature-grid{grid-template-columns:1fr}.side-panel{position:static}.product-grid{grid-template-columns:1fr}.support-grid{grid-template-columns:1fr 1fr}.number-row{grid-template-columns:repeat(2,1fr)}.cta-panel{padding:34px 27px;display:block}.cta-panel .btn{margin-top:22px}.section{padding:68px 0}}
    @media(max-width:520px){.section-title{font-size:32px}.banner-content h1{font-size:42px}.banner-content p,.section-copy{font-size:15px}.support-grid{grid-template-columns:1fr}.number-item strong{font-size:27px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}.product-card figure{height:190px}}

/* roulang page: category5 */
:root {
            --primary-gradient: linear-gradient(135deg,#0ea5e9 0%,#22c55e 52%,#10b981 100%);
            --dark-gradient: linear-gradient(135deg,#102033 0%,#123c55 58%,#0b7661 100%);
            --page-bg:#f4f8fb;
            --surface:#fff;
            --text:#102033;
            --muted:#64748b;
            --line:#dce7ee;
            --orange:#f97316;
            --card-radius:28px;
            --shadow:0 24px 70px rgba(16,32,51,.10);
            --shadow-strong:0 28px 80px rgba(16,32,51,.16);
            --container:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;color:var(--text);background:var(--page-bg);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.7;overflow-x:hidden}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--container),calc(100% - 40px));margin:auto}
        .section{padding:92px 0}
        .section-head{max-width:720px;margin-bottom:40px}
        .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid rgba(14,165,233,.18);border-radius:999px;color:#0877a9;background:#e9f8ff;font-size:13px;font-weight:800}
        .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 5px rgba(34,197,94,.12)}
        .section-title{margin:15px 0 12px;font-size:clamp(30px,4vw,48px);line-height:1.16;letter-spacing:-.045em;font-weight:900}
        .section-copy{margin:0;color:var(--muted);font-size:17px}
        .site-header{position:fixed;z-index:50;inset:0 0 auto;background:rgba(255,255,255,.92);border-bottom:1px solid rgba(220,231,238,.85);backdrop-filter:blur(18px)}
        .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
        .brand{display:inline-flex;align-items:center;gap:11px;min-width:205px}
        .brand-mark{width:40px;height:40px;display:grid;place-items:center;color:white;border-radius:14px;background:var(--primary-gradient);box-shadow:0 10px 24px rgba(14,165,233,.25);font-size:20px;font-weight:900}
        .brand-text{display:flex;flex-direction:column;line-height:1.1}
        .brand-text strong{font-size:15px;letter-spacing:-.02em}
        .brand-text span{color:#738397;font-size:11px;margin-top:5px}
        .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:4px}
        .nav-links a{padding:10px 11px;border-radius:12px;color:#526276;font-size:13px;font-weight:700;transition:.25s;white-space:nowrap}
        .nav-links a:hover,.nav-links a.active{color:#0877a9;background:#eaf8fc}
        .nav-links .nav-highlight{color:#fff;background:var(--primary-gradient);box-shadow:0 8px 20px rgba(14,165,233,.18)}
        .nav-links .nav-highlight:hover{color:#fff;transform:translateY(-2px)}
        .menu-toggle{display:none;border:0;background:#edf7fa;color:#0877a9;border-radius:12px;padding:10px 13px;font-size:22px}
        .page-banner{position:relative;padding:160px 0 105px;color:#fff;background:linear-gradient(90deg,rgba(8,28,45,.94),rgba(8,64,70,.7)),url("/assets/images/backpic/back-5.webp") center/cover no-repeat}
        .page-banner:after{content:"";position:absolute;inset:auto 0 0;height:100px;background:linear-gradient(transparent,var(--page-bg))}
        .banner-content{position:relative;z-index:1;max-width:790px}
        .banner-kicker{color:#bdf8d5;font-size:14px;font-weight:800;letter-spacing:.08em}
        .page-banner h1{margin:20px 0 17px;font-size:clamp(40px,6vw,70px);line-height:1.1;letter-spacing:-.06em;font-weight:950}
        .banner-copy{max-width:700px;color:rgba(255,255,255,.82);font-size:18px}
        .banner-metrics{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
        .metric{padding:12px 17px;border:1px solid rgba(255,255,255,.2);border-radius:17px;background:rgba(6,33,45,.4)}
        .metric strong{display:block;color:#8bf3bc;font-size:22px;line-height:1.1}
        .metric span{color:rgba(255,255,255,.72);font-size:12px}
        .btn{min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 21px;border-radius:15px;border:1px solid transparent;font-size:14px;font-weight:850;transition:.25s}
        .btn-primary{color:#fff;background:var(--primary-gradient);box-shadow:0 13px 28px rgba(14,165,233,.25)}
        .btn-primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 17px 32px rgba(14,165,233,.34)}
        .btn-outline{color:#0877a9;border-color:#b9dce7;background:#fff}
        .btn-outline:hover{background:#eaf8fc;transform:translateY(-2px)}
        .intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
        .image-card{overflow:hidden;border-radius:var(--card-radius);box-shadow:var(--shadow-strong);background:#fff}
        .image-card img{width:100%;height:410px;object-fit:cover}
        .check-list{display:grid;gap:15px;margin:27px 0 0;padding:0;list-style:none}
        .check-list li{display:flex;gap:12px;color:#425367;font-size:15px}
        .check-list li:before{content:"✓";flex:0 0 25px;height:25px;display:grid;place-items:center;color:#0877a9;border-radius:50%;background:#dff6ef;font-weight:900}
        .product-layout{display:grid;grid-template-columns:250px 1fr;gap:24px;align-items:start}
        .filter-card,.product-card,.support-card,.quote-card,.age-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--card-radius);box-shadow:var(--shadow);transition:.28s}
        .filter-card{padding:25px;position:sticky;top:105px}
        .filter-card h3{margin:0 0 16px;font-size:18px}
        .filter-card p{color:var(--muted);font-size:14px;margin:0 0 20px}
        .filter-tag{display:block;padding:11px 13px;margin:8px 0;border-radius:12px;background:#f1f8fa;color:#386074;font-size:14px;font-weight:700}
        .filter-tag.current{color:#0877a9;background:#e5f7f6}
        .product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
        .product-card{overflow:hidden}
        .product-card:hover,.support-card:hover,.age-card:hover,.quote-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-strong)}
        .product-card img{width:100%;height:220px;object-fit:cover}
        .product-body{padding:23px}
        .tag{display:inline-flex;padding:5px 10px;border-radius:999px;background:#e8f8ef;color:#128354;font-size:12px;font-weight:800}
        .product-body h3{margin:13px 0 7px;font-size:21px;line-height:1.3}
        .product-body p{margin:0;color:var(--muted);font-size:14px}
        .product-meta{display:flex;justify-content:space-between;gap:10px;margin-top:18px;padding-top:15px;border-top:1px solid #edf2f4;color:#597084;font-size:12px}
        .split-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:stretch}
        .dark-panel{padding:42px;border-radius:var(--card-radius);color:#fff;background:var(--dark-gradient);box-shadow:var(--shadow-strong)}
        .dark-panel h2{margin:12px 0;font-size:clamp(28px,4vw,44px);line-height:1.18}
        .dark-panel p{color:rgba(255,255,255,.74);font-size:15px}
        .number-list{display:grid;gap:14px}
        .number-item{display:flex;align-items:flex-start;gap:16px;padding:20px 22px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:0 13px 35px rgba(16,32,51,.06)}
        .number-item b{display:grid;place-items:center;flex:0 0 37px;height:37px;border-radius:13px;color:#fff;background:var(--primary-gradient)}
        .number-item h3{margin:0 0 3px;font-size:17px}
        .number-item p{margin:0;color:var(--muted);font-size:14px}
        .age-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
        .age-card{padding:26px}
        .age-card strong{display:block;font-size:34px;color:#0b8f78;line-height:1}
        .age-card h3{margin:17px 0 7px;font-size:19px}
        .age-card p{margin:0;color:var(--muted);font-size:14px}
        .quote-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
        .quote-card{padding:30px}
        .stars{color:#f97316;letter-spacing:3px;font-size:18px}
        .quote-card blockquote{margin:18px 0;color:#334b60;font-size:18px;font-weight:650}
        .quote-card cite{font-style:normal;color:var(--muted);font-size:13px}
        .data-card{padding:33px;border-radius:var(--card-radius);background:#e7f8f4;border:1px solid #c9eee2}
        .data-card h3{margin:0 0 17px;font-size:21px}
        .data-row{display:flex;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px solid rgba(11,118,97,.14);font-size:14px}
        .data-row:last-child{border:0}
        .data-row strong{color:#087c68}
        .cta{padding:65px 0;color:#fff;background:var(--dark-gradient)}
        .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
        .cta h2{margin:0 0 10px;font-size:clamp(28px,4vw,45px);line-height:1.2}
        .cta p{margin:0;color:rgba(255,255,255,.75)}
        footer{padding:66px 0 25px;background:#0e2031;color:#dce8ed}
        .footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.1fr;gap:35px}
        footer .brand-text strong{color:#fff}
        footer .brand-text span{color:#8da7b5}
        .footer-intro{max-width:300px;color:#92a8b4;font-size:13px;margin-top:20px}
        footer h3{margin:0 0 15px;color:#fff;font-size:15px}
        footer ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
        footer li,footer a,.contact-line{color:#91a8b6;font-size:13px;transition:.2s}
        footer a:hover{color:#75f3b2}
        .contact-line{margin:0 0 8px}
        .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:25px;margin-top:42px;border-top:1px solid rgba(255,255,255,.12);color:#78909e;font-size:12px}
        :focus-visible{outline:3px solid rgba(14,165,233,.45);outline-offset:3px}
        @media(max-width:1024px){.nav-links a{padding:9px 7px;font-size:12px}.brand{min-width:190px}.footer-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:768px){.container{width:min(var(--container),calc(100% - 28px))}.section{padding:68px 0}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:76px;left:14px;right:14px;padding:12px;flex-direction:column;align-items:stretch;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow-strong)}.nav-links.open{display:flex}.nav-links a{text-align:center;padding:13px}.page-banner{padding:137px 0 85px}.intro-grid,.split-panel,.quote-wrap{grid-template-columns:1fr;gap:28px}.product-layout{grid-template-columns:1fr}.filter-card{position:static}.age-grid{grid-template-columns:1fr}.cta-inner{align-items:flex-start;flex-direction:column}}
        @media(max-width:520px){.product-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:27px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:10px}.banner-metrics{gap:8px}.metric{flex:1;min-width:135px}.dark-panel{padding:28px 23px}.hero-actions .btn,.cta .btn{width:100%}}

/* roulang page: category6 */
:root {
            --primary-gradient: linear-gradient(135deg, #0ea5e9 0%, #22c55e 52%, #10b981 100%);
            --dark-gradient: linear-gradient(135deg, #102033 0%, #123c55 58%, #0b7661 100%);
            --page-bg: #f4f8fb;
            --surface: #ffffff;
            --text: #102033;
            --muted: #64748b;
            --line: #dce7ee;
            --orange: #f97316;
            --card-radius: 28px;
            --shadow: 0 24px 70px rgba(16, 32, 51, .10);
            --shadow-strong: 0 28px 80px rgba(16, 32, 51, .16);
            --container: 1180px;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background: var(--page-bg);
            font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; }
        img { display: block; max-width: 100%; }
        button, input, textarea { font: inherit; }
        button { cursor: pointer; }
        .container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
        .section { padding: 92px 0; }
        .section-head { max-width: 720px; margin-bottom: 40px; }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 13px;
            border: 1px solid rgba(14,165,233,.18);
            border-radius: 999px;
            color: #0877a9;
            background: #e9f8ff;
            font-size: 13px;
            font-weight: 800;
            letter-spacing: .04em;
        }
        .eyebrow::before {
            content: "";
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #22c55e;
            box-shadow: 0 0 0 5px rgba(34,197,94,.12);
        }
        .section-title {
            margin: 16px 0 12px;
            font-size: clamp(30px, 4vw, 48px);
            line-height: 1.16;
            letter-spacing: -.045em;
            font-weight: 900;
        }
        .section-copy { margin: 0; color: var(--muted); font-size: 17px; }
        .site-header {
            position: fixed;
            z-index: 50;
            inset: 0 0 auto;
            background: rgba(255,255,255,.90);
            border-bottom: 1px solid rgba(220,231,238,.85);
            backdrop-filter: blur(18px);
        }
        .nav-wrap {
            min-height: 76px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: 205px;
        }
        .brand-mark {
            width: 40px;
            height: 40px;
            display: grid;
            place-items: center;
            color: white;
            border-radius: 14px;
            background: var(--primary-gradient);
            box-shadow: 0 10px 24px rgba(14,165,233,.25);
            font-size: 20px;
            font-weight: 900;
        }
        .brand-text { display: flex; flex-direction: column; line-height: 1.1; }
        .brand-text strong { font-size: 15px; letter-spacing: -.02em; }
        .brand-text span { color: #738397; font-size: 11px; margin-top: 5px; }
        .nav-links {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 4px;
        }
        .nav-links a {
            padding: 10px 11px;
            border-radius: 12px;
            color: #526276;
            font-size: 13px;
            font-weight: 700;
            transition: .25s ease;
            white-space: nowrap;
        }
        .nav-links a:hover, .nav-links a.active {
            color: #0877a9;
            background: #eaf8fc;
        }
        .nav-links .nav-highlight {
            color: white;
            background: var(--primary-gradient);
            box-shadow: 0 8px 20px rgba(14,165,233,.18);
        }
        .nav-links .nav-highlight:hover { color: white; transform: translateY(-2px); }
        .menu-toggle {
            display: none;
            border: 0;
            background: #edf7fa;
            color: #0877a9;
            border-radius: 12px;
            padding: 10px 13px;
            font-size: 22px;
        }

        .category-banner {
            position: relative;
            padding: 158px 0 82px;
            color: #fff;
            background:
                linear-gradient(90deg, rgba(8, 28, 45, .94), rgba(8, 47, 58, .72)),
                url("/assets/images/backpic/back-6.webp") center/cover no-repeat;
            overflow: hidden;
        }
        .category-banner::before {
            content: "";
            position: absolute;
            width: 430px;
            height: 430px;
            right: 6%;
            top: 80px;
            border: 1px solid rgba(130,246,191,.24);
            border-radius: 50%;
            box-shadow: 0 0 0 38px rgba(130,246,191,.05), 0 0 0 78px rgba(130,246,191,.035);
        }
        .banner-content { position: relative; z-index: 1; max-width: 760px; }
        .banner-kicker {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #baf8d6;
            font-size: 14px;
            font-weight: 800;
        }
        .banner-kicker i { width: 32px; height: 2px; background: #73e8a8; }
        .banner-title {
            margin: 22px 0 18px;
            font-size: clamp(40px, 6vw, 70px);
            line-height: 1.08;
            letter-spacing: -.06em;
            font-weight: 950;
        }
        .banner-copy { max-width: 700px; margin: 0; color: rgba(255,255,255,.82); font-size: 18px; }
        .banner-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
        .banner-tag {
            padding: 9px 14px;
            border: 1px solid rgba(255,255,255,.20);
            border-radius: 999px;
            background: rgba(255,255,255,.10);
            color: #e7fff1;
            font-size: 13px;
            font-weight: 700;
        }

        .content-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.55fr) minmax(280px, .75fr);
            gap: 28px;
            align-items: start;
        }
        .product-wall {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 22px;
        }
        .product-card, .support-card, .stat-card, .scene-panel {
            background: var(--surface);
            border: 1px solid rgba(220,231,238,.9);
            border-radius: var(--card-radius);
            box-shadow: var(--shadow);
            transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
        }
        .product-card:hover, .support-card:hover, .stat-card:hover {
            transform: translateY(-5px) scale(1.012);
            border-color: rgba(14,165,233,.35);
            box-shadow: var(--shadow-strong);
        }
        .product-card { overflow: hidden; }
        .product-card img { width: 100%; height: 220px; object-fit: cover; }
        .product-body { padding: 23px; }
        .product-meta {
            display: flex;
            justify-content: space-between;
            gap: 12px;
            align-items: center;
            margin-bottom: 12px;
        }
        .product-label, .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 800;
        }
        .product-label {
            padding: 6px 10px;
            color: #0877a9;
            background: #eaf8fc;
        }
        .product-score { color: #f97316; font-size: 13px; font-weight: 800; }
        .product-card h3 { margin: 0 0 8px; font-size: 21px; line-height: 1.3; }
        .product-card p { margin: 0; color: var(--muted); font-size: 14px; }
        .feature-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin: 18px 0 0;
            padding: 0;
            list-style: none;
        }
        .feature-list li {
            padding: 5px 9px;
            border-radius: 8px;
            color: #526276;
            background: #f2f7f9;
            font-size: 12px;
        }
        .more-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 20px;
            color: #0877a9;
            font-weight: 800;
            font-size: 14px;
        }
        .more-link:hover { color: #0b7661; gap: 12px; }
        .side-stack { display: grid; gap: 22px; position: sticky; top: 104px; }
        .side-card { padding: 27px; }
        .side-card.dark { color: #fff; background: var(--dark-gradient); border: 0; }
        .side-card h3 { margin: 0 0 12px; font-size: 22px; line-height: 1.3; }
        .side-card p { margin: 0; color: var(--muted); font-size: 14px; }
        .side-card.dark p { color: rgba(255,255,255,.72); }
        .side-list { display: grid; gap: 14px; margin: 21px 0 0; padding: 0; list-style: none; }
        .side-list li { display: flex; align-items: flex-start; gap: 10px; color: #425367; font-size: 14px; }
        .side-card.dark .side-list li { color: rgba(255,255,255,.82); }
        .side-list b {
            flex: 0 0 24px;
            height: 24px;
            display: grid;
            place-items: center;
            color: #0877a9;
            border-radius: 50%;
            background: #e7f8fc;
            font-size: 12px;
        }
        .side-card.dark .side-list b { color: #0d5b4c; background: #a4f4c7; }
        .progress-wrap { margin-top: 22px; }
        .progress-top { display: flex; justify-content: space-between; margin-bottom: 8px; color: #bfffe0; font-size: 12px; font-weight: 800; }
        .progress-line { height: 9px; overflow: hidden; border-radius: 999px; background: rgba(255,255,255,.15); }
        .progress-line span { display: block; width: 78%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #5dd8ff, #78f0aa); }

        .split-panel {
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            gap: 28px;
            align-items: stretch;
        }
        .image-panel { min-height: 430px; overflow: hidden; border-radius: var(--card-radius); box-shadow: var(--shadow-strong); }
        .image-panel img { width: 100%; height: 100%; object-fit: cover; }
        .text-panel { padding: 36px; border-radius: var(--card-radius); background: #fff; box-shadow: var(--shadow); }
        .text-panel h2 { margin: 14px 0; font-size: clamp(28px, 4vw, 44px); line-height: 1.18; letter-spacing: -.045em; }
        .check-list { display: grid; gap: 16px; margin: 25px 0 0; padding: 0; list-style: none; }
        .check-list li { display: flex; gap: 12px; color: #425367; font-size: 15px; }
        .check-list li::before {
            content: "✓";
            flex: 0 0 25px;
            height: 25px;
            display: grid;
            place-items: center;
            color: #0877a9;
            border-radius: 50%;
            background: #e8f8fc;
            font-weight: 900;
        }

        .support-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
        .support-card { padding: 27px; }
        .support-icon {
            width: 50px;
            height: 50px;
            display: grid;
            place-items: center;
            margin-bottom: 20px;
            border-radius: 17px;
            color: #0877a9;
            background: linear-gradient(145deg, #e8f8ff, #e7fff1);
            font-size: 24px;
        }
        .support-card h3 { margin: 0 0 8px; font-size: 20px; }
        .support-card p { margin: 0; color: var(--muted); font-size: 14px; }

        .dark-section { color: #fff; background: var(--dark-gradient); }
        .dark-section .eyebrow { color: #bfffe0; background: rgba(125,241,181,.12); border-color: rgba(125,241,181,.22); }
        .dark-section .section-copy { color: rgba(255,255,255,.70); }
        .stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
        .stat-card { padding: 25px; background: rgba(255,255,255,.10); border-color: rgba(255,255,255,.14); box-shadow: none; }
        .stat-card:hover { background: rgba(255,255,255,.16); border-color: rgba(125,241,181,.35); }
        .stat-card strong { display: block; color: #9af7c4; font-size: 38px; line-height: 1; letter-spacing: -.05em; }
        .stat-card span { display: block; margin-top: 10px; color: rgba(255,255,255,.70); font-size: 13px; }
        .stat-card small { display: block; margin-top: 12px; color: #d8ffea; font-size: 12px; }

        .scene-layout { display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; }
        .scene-panel { padding: 29px; }
        .scene-panel h3 { margin: 0 0 9px; font-size: 22px; }
        .scene-panel p { margin: 0; color: var(--muted); font-size: 14px; }
        .scene-panel.featured { color: #fff; background: linear-gradient(140deg, #0d7c78, #12384c); border: 0; }
        .scene-panel.featured p { color: rgba(255,255,255,.73); }
        .scene-number { color: #93f5bd; font-size: 13px; font-weight: 900; letter-spacing: .08em; }

        .cta-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            padding: 42px;
            color: #fff;
            border-radius: var(--card-radius);
            background: var(--primary-gradient);
            box-shadow: var(--shadow-strong);
        }
        .cta-box h2 { margin: 0 0 8px; font-size: clamp(27px, 4vw, 42px); line-height: 1.18; }
        .cta-box p { max-width: 620px; margin: 0; color: rgba(255,255,255,.82); }
        .btn {
            min-height: 50px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            padding: 13px 21px;
            border: 1px solid transparent;
            border-radius: 15px;
            font-size: 14px;
            font-weight: 850;
            transition: .25s ease;
        }
        .btn-light { color: #0877a9; background: #fff; box-shadow: 0 12px 28px rgba(16,32,51,.16); }
        .btn-light:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 17px 32px rgba(16,32,51,.24); }
        .btn:focus-visible, .nav-links a:focus-visible, .menu-toggle:focus-visible { outline: 3px solid rgba(14,165,233,.35); outline-offset: 3px; }

        footer { padding: 70px 0 24px; background: #0b1d2b; color: #dcebf0; }
        .footer-grid { display: grid; grid-template-columns: 1.35fr .8fr .8fr 1fr; gap: 36px; }
        footer .brand-text strong { color: #fff; }
        footer .brand-text span { color: #8ca8b6; }
        .footer-intro { max-width: 330px; margin: 20px 0 0; color: #8ca8b6; font-size: 14px; }
        footer h3 { margin: 0 0 15px; color: #fff; font-size: 15px; }
        footer ul { display: grid; gap: 9px; margin: 0; padding: 0; list-style: none; }
        footer li, .contact-line { color: #8ca8b6; font-size: 13px; }
        footer li a:hover, footer-bottom a:hover { color: #7af0b7; }
        .contact-line { margin: 0 0 8px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 18px;
            margin-top: 45px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,.12);
            color: #708b98;
            font-size: 12px;
        }

        @media (max-width: 1050px) {
            .nav-links a { padding-left: 8px; padding-right: 8px; font-size: 12px; }
            .brand { min-width: 190px; }
            .content-grid { grid-template-columns: 1fr; }
            .side-stack { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
            .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
        }
        @media (max-width: 768px) {
            .container { width: min(var(--container), calc(100% - 28px)); }
            .section { padding: 68px 0; }
            .nav-wrap { min-height: 68px; }
            .menu-toggle { display: block; }
            .nav-links {
                position: absolute;
                top: 68px;
                left: 14px;
                right: 14px;
                display: none;
                align-items: stretch;
                flex-direction: column;
                padding: 10px;
                border: 1px solid var(--line);
                border-radius: 20px;
                background: rgba(255,255,255,.98);
                box-shadow: var(--shadow-strong);
            }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 13px 14px; }
            .category-banner { padding: 130px 0 65px; }
            .category-banner::before { right: -170px; top: 120px; }
            .split-panel, .scene-layout { grid-template-columns: 1fr; }
            .image-panel { min-height: 300px; }
            .support-grid, .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
            .cta-box { align-items: flex-start; flex-direction: column; padding: 30px 24px; }
        }
        @media (max-width: 520px) {
            .brand-text strong { max-width: 145px; font-size: 13px; }
            .brand-text span { font-size: 10px; }
            .product-wall, .support-grid, .stats-grid, .side-stack { grid-template-columns: 1fr; }
            .banner-title { font-size: 43px; }
            .banner-copy, .section-copy { font-size: 15px; }
            .product-card img { height: 205px; }
            .text-panel, .support-card, .side-card, .scene-panel { padding: 23px; }
            .footer-grid { grid-template-columns: 1fr; gap: 27px; }
            .footer-bottom { align-items: flex-start; flex-direction: column; }
            .btn { width: 100%; }
        }

/* roulang page: category7 */
:root{
      --primary-gradient:linear-gradient(135deg,#0ea5e9 0%,#22c55e 52%,#10b981 100%);
      --dark-gradient:linear-gradient(135deg,#102033 0%,#123c55 58%,#0b7661 100%);
      --page-bg:#f4f8fb;--surface:#fff;--text:#102033;--muted:#64748b;
      --line:#dce7ee;--orange:#f97316;--card-radius:28px;
      --shadow:0 24px 70px rgba(16,32,51,.1);--shadow-strong:0 28px 80px rgba(16,32,51,.16);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--text);background:var(--page-bg);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.7;overflow-x:hidden}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .section{padding:94px 0}
    .section-head{max-width:730px;margin-bottom:40px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid rgba(14,165,233,.18);border-radius:999px;color:#0877a9;background:#e9f8ff;font-size:13px;font-weight:800}
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 5px rgba(34,197,94,.12)}
    .section-title{margin:16px 0 12px;font-size:clamp(30px,4vw,48px);line-height:1.16;letter-spacing:-.045em;font-weight:900}
    .section-copy{margin:0;color:var(--muted);font-size:17px}
    .site-header{position:fixed;z-index:50;inset:0 0 auto;background:rgba(255,255,255,.92);border-bottom:1px solid rgba(220,231,238,.85);backdrop-filter:blur(18px)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:inline-flex;align-items:center;gap:11px;min-width:205px}
    .brand-mark{width:40px;height:40px;display:grid;place-items:center;color:#fff;border-radius:14px;background:var(--primary-gradient);box-shadow:0 10px 24px rgba(14,165,233,.25);font-size:20px;font-weight:900}
    .brand-text{display:flex;flex-direction:column;line-height:1.1}
    .brand-text strong{font-size:15px;letter-spacing:-.02em}
    .brand-text span{color:#738397;font-size:11px;margin-top:5px}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:4px}
    .nav-links a{padding:10px 11px;border-radius:12px;color:#526276;font-size:13px;font-weight:700;transition:.25s ease;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:#0877a9;background:#eaf8fc}
    .nav-links .nav-highlight{color:#fff;background:var(--primary-gradient);box-shadow:0 8px 20px rgba(14,165,233,.18)}
    .nav-links .nav-highlight:hover{color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;border:0;background:#edf7fa;color:#0877a9;border-radius:12px;padding:10px 13px;font-size:22px}
    .page-banner{position:relative;padding:166px 0 92px;color:#fff;background:linear-gradient(90deg,rgba(8,28,45,.92),rgba(8,47,58,.66),rgba(8,47,58,.3)),url("/assets/images/backpic/back-7.webp") center/cover no-repeat}
    .page-banner:after{content:"";position:absolute;inset:auto 0 0;height:90px;background:linear-gradient(transparent,var(--page-bg))}
    .banner-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.08fr .92fr;align-items:end;gap:60px}
    .banner-kicker{color:#bdf8d8;font-weight:800;font-size:14px}
    .page-banner h1{max-width:720px;margin:18px 0;font-size:clamp(42px,6vw,72px);line-height:1.08;letter-spacing:-.06em;font-weight:950}
    .banner-copy{max-width:680px;color:rgba(255,255,255,.82);font-size:18px}
    .banner-panel{padding:26px;border:1px solid rgba(255,255,255,.2);border-radius:var(--card-radius);background:rgba(5,29,41,.48);box-shadow:var(--shadow-strong)}
    .panel-label{color:#a7f3d0;font-size:12px;font-weight:800}
    .panel-value{margin:8px 0 18px;font-size:29px;font-weight:900}
    .signal-list{display:grid;gap:12px}
    .signal-item{display:flex;justify-content:space-between;gap:15px;padding:12px 0;border-top:1px solid rgba(255,255,255,.15);font-size:13px}
    .signal-item b{color:#7af0b7}
    .btn{min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 21px;border:1px solid transparent;border-radius:15px;font-size:14px;font-weight:850;transition:.25s ease}
    .btn-primary{color:#fff;background:var(--primary-gradient);box-shadow:0 13px 28px rgba(14,165,233,.25)}
    .btn-primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 17px 32px rgba(14,165,233,.34)}
    .btn-outline{color:#0877a9;background:#fff;border-color:#cbe3eb}
    .btn-outline:hover{border-color:#22c55e;transform:translateY(-2px)}
    .intro-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
    .image-card{overflow:hidden;border-radius:var(--card-radius);box-shadow:var(--shadow-strong);background:#dbeef2}
    .image-card img{width:100%;height:390px;object-fit:cover;transition:.4s}
    .image-card:hover img{transform:scale(1.03)}
    .check-list{display:grid;gap:15px;margin:27px 0 0;padding:0;list-style:none}
    .check-list li{display:flex;gap:12px;color:#425367;font-size:15px}
    .check-list li:before{content:"✓";flex:0 0 25px;height:25px;display:grid;place-items:center;color:#0877a9;border-radius:50%;background:#e3f7f2;font-weight:900}
    .product-layout{display:grid;grid-template-columns:1.55fr .75fr;gap:25px;align-items:start}
    .product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
    .product-card,.support-card,.spec-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--card-radius);box-shadow:var(--shadow);transition:.28s ease}
    .product-card{overflow:hidden}
    .product-card:hover,.support-card:hover,.spec-card:hover{transform:translateY(-5px) scale(1.01);box-shadow:var(--shadow-strong)}
    .product-card img{width:100%;height:205px;object-fit:cover}
    .product-body{padding:23px}
    .tag{display:inline-flex;padding:5px 10px;border-radius:999px;background:#edf9f4;color:#07835f;font-size:12px;font-weight:800}
    .product-body h3{margin:13px 0 7px;font-size:21px;line-height:1.3}
    .product-body p{margin:0;color:var(--muted);font-size:14px}
    .side-card{position:sticky;top:100px;padding:27px;color:#fff;border-radius:var(--card-radius);background:var(--dark-gradient);box-shadow:var(--shadow-strong)}
    .side-card h3{margin:0 0 14px;font-size:24px;line-height:1.25}
    .side-card p{color:rgba(255,255,255,.72);font-size:14px}
    .metric{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid rgba(255,255,255,.16)}
    .metric strong{font-size:29px;color:#8af2bd}
    .metric span{font-size:12px;color:rgba(255,255,255,.68)}
    .split-section{background:#fff}
    .split-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
    .support-card{padding:29px}
    .support-card .icon{width:45px;height:45px;display:grid;place-items:center;border-radius:16px;color:#0877a9;background:#e5f8fb;font-size:22px}
    .support-card h3{margin:20px 0 8px;font-size:21px}
    .support-card p{margin:0;color:var(--muted);font-size:14px}
    .dark-block{color:#fff;background:var(--dark-gradient)}
    .dark-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center}
    .dark-block .section-copy{color:rgba(255,255,255,.72)}
    .data-badges{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .data-badge{padding:20px;border:1px solid rgba(255,255,255,.16);border-radius:22px;background:rgba(255,255,255,.08)}
    .data-badge strong{display:block;color:#91f4c1;font-size:31px;line-height:1.1}
    .data-badge span{display:block;margin-top:7px;color:rgba(255,255,255,.7);font-size:12px}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .step{position:relative;padding:27px 24px 24px;border-radius:24px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .step-number{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;color:#fff;background:var(--primary-gradient);font-weight:900}
    .step h3{margin:18px 0 7px;font-size:19px}
    .step p{margin:0;color:var(--muted);font-size:14px}
    .spec-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:22px}
    .spec-card{padding:27px}
    .spec-card h3{margin:0 0 18px;font-size:23px}
    .spec-list{display:grid;gap:0;margin:0;padding:0;list-style:none}
    .spec-list li{display:flex;justify-content:space-between;gap:18px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14px}
    .spec-list li:last-child{border-bottom:0}
    .spec-list span{color:var(--muted)}
    .spec-list b{text-align:right;color:#0877a9}
    .cta{padding:70px 0;background:linear-gradient(110deg,#e5f9f5,#eaf8ff)}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:42px 48px;border-radius:var(--card-radius);background:var(--primary-gradient);color:#fff;box-shadow:var(--shadow-strong)}
    .cta-box h2{margin:0 0 8px;font-size:clamp(26px,4vw,42px);line-height:1.2}
    .cta-box p{margin:0;color:rgba(255,255,255,.82)}
    .cta-box .btn{color:#0877a9;background:#fff}
    footer{padding:65px 0 25px;background:#0d1e2d;color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr 1fr;gap:38px}
    footer .brand-text strong{color:#fff}
    footer .brand-text span{color:#89a0ad}
    .footer-intro{max-width:300px;margin:22px 0 0;color:#91a4b2;font-size:13px}
    footer h3{margin:4px 0 17px;font-size:15px}
    footer ul{display:grid;gap:9px;margin:0;padding:0;list-style:none}
    footer li,footer .contact-line{margin:0;color:#91a4b2;font-size:13px}
    footer a:hover{color:#72efb2}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:48px;padding-top:21px;border-top:1px solid rgba(255,255,255,.12);color:#718795;font-size:12px}
    :focus-visible{outline:3px solid rgba(34,197,94,.45);outline-offset:3px}
    @media(max-width:1024px){.nav-links a{padding:9px 7px;font-size:12px}.banner-inner,.dark-grid{gap:30px}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 30px))}.section{padding:70px 0}.menu-toggle{display:block}.nav-links{position:absolute;display:none;left:15px;right:15px;top:68px;padding:12px;flex-direction:column;align-items:stretch;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow-strong)}.nav-links.open{display:flex}.nav-links a{padding:13px 14px}.banner-inner,.intro-grid,.product-layout,.dark-grid,.spec-wrap{grid-template-columns:1fr}.page-banner{padding:135px 0 72px}.banner-panel{max-width:460px}.side-card{position:static}.steps{grid-template-columns:1fr}.cta-box{align-items:flex-start;flex-direction:column;padding:32px 27px}}
    @media(max-width:520px){.hero-actions{flex-direction:column;align-items:stretch}.btn{width:100%}.product-grid,.split-grid,.data-badges{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column;margin-top:35px}.page-banner h1{font-size:43px}.image-card img{height:280px}}