/* roulang page: index */
:root {
            --bg: #070b17;
            --bg-soft: #0c1224;
            --panel: #10182d;
            --panel-light: #141f38;
            --line: rgba(153, 177, 224, .16);
            --line-strong: rgba(153, 177, 224, .28);
            --text: #f4f7ff;
            --muted: #aab8d2;
            --faint: #7483a1;
            --primary: #6475ff;
            --primary-deep: #4356df;
            --cyan: #4dd8f4;
            --green: #4ce0a1;
            --orange: #ffb86b;
            --radius-lg: 28px;
            --radius-md: 18px;
            --radius-sm: 12px;
            --shadow: 0 24px 80px rgba(0, 0, 0, .28);
            --shadow-soft: 0 14px 36px rgba(0, 0, 0, .18);
            --container: 1180px;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            background:
                radial-gradient(circle at 12% 0%, rgba(73, 88, 220, .18), transparent 32rem),
                radial-gradient(circle at 90% 18%, rgba(54, 180, 219, .08), transparent 28rem),
                var(--bg);
            color: var(--text);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: .25s ease; }
        a:hover { color: var(--cyan); }
        img { max-width: 100%; display: block; }
        button, input { font: inherit; }
        button:focus-visible, a:focus-visible { outline: 3px solid rgba(77, 216, 244, .7); outline-offset: 4px; }
        .container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
        .section { padding: 104px 0; position: relative; }
        .section-dark { background: rgba(255,255,255,.018); border-top: 1px solid rgba(255,255,255,.035); border-bottom: 1px solid rgba(255,255,255,.035); }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--cyan);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .14em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .eyebrow::before { content: ""; width: 24px; height: 1px; background: var(--cyan); }
        h1, h2, h3, p { margin-top: 0; }
        h1, h2, h3 { line-height: 1.2; letter-spacing: -.035em; }
        h1 { font-size: clamp(42px, 6vw, 78px); max-width: 780px; margin-bottom: 26px; }
        h2 { font-size: clamp(30px, 4vw, 48px); margin-bottom: 18px; }
        h3 { font-size: 20px; margin-bottom: 10px; }
        .section-heading { max-width: 720px; margin-bottom: 46px; }
        .section-heading p { color: var(--muted); font-size: 17px; max-width: 690px; }
        .text-gradient {
            background: linear-gradient(100deg, #fff 10%, #91a2ff 56%, #4dd8f4 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 23, .78);
            border-bottom: 1px solid rgba(255,255,255,.08);
            backdrop-filter: blur(18px);
        }
        .nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
        .brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; font-size: 20px; letter-spacing: -.03em; white-space: nowrap; }
        .brand-mark {
            width: 34px; height: 34px; border-radius: 11px;
            display: grid; place-items: center;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            color: #fff; box-shadow: 0 8px 24px rgba(76, 110, 255, .34);
        }
        .main-nav { display: flex; align-items: center; gap: 8px; }
        .main-nav a {
            padding: 9px 15px;
            border-radius: 10px;
            color: var(--muted);
            font-size: 14px;
            font-weight: 600;
        }
        .main-nav a:hover, .main-nav a.active { color: #fff; background: rgba(100,117,255,.13); }
        .nav-action { display: flex; align-items: center; gap: 12px; }
        .nav-download { padding: 10px 17px !important; color: #fff !important; background: var(--primary); box-shadow: 0 8px 20px rgba(100,117,255,.24); }
        .nav-download:hover { background: #7a88ff !important; transform: translateY(-2px); }
        .mobile-toggle { display: none; border: 1px solid var(--line); color: #fff; background: var(--panel); border-radius: 10px; padding: 9px 12px; }

        .hero { padding: 78px 0 94px; }
        .hero-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 70px; align-items: center; }
        .hero-copy p { color: var(--muted); font-size: 18px; max-width: 700px; margin-bottom: 30px; }
        .hero-actions { display: flex; gap: 13px; flex-wrap: wrap; }
        .button {
            border-radius: 12px;
            padding: 13px 21px;
            font-weight: 700;
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 9px;
            transition: .25s ease;
            margin: 0;
        }
        .button.primary { background: var(--primary); color: #fff; box-shadow: 0 12px 28px rgba(100,117,255,.27); }
        .button.primary:hover { background: #7b8aff; transform: translateY(-3px); color: #fff; }
        .button.ghost { color: #e5eaff; border-color: var(--line-strong); background: rgba(255,255,255,.035); }
        .button.ghost:hover { background: rgba(100,117,255,.12); border-color: rgba(100,117,255,.55); transform: translateY(-3px); }
        .hero-notes { display: flex; gap: 24px; margin-top: 28px; flex-wrap: wrap; }
        .hero-note { display: flex; gap: 9px; align-items: center; color: var(--faint); font-size: 13px; }
        .hero-note i { color: var(--green); }
        .signal-board {
            position: relative;
            padding: 22px;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            background: linear-gradient(145deg, rgba(25,37,70,.92), rgba(11,17,34,.94));
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .signal-board::before {
            content: "";
            position: absolute; width: 280px; height: 280px; border-radius: 50%;
            right: -100px; top: -110px; background: rgba(77,216,244,.13); filter: blur(4px);
        }
        .board-top { display: flex; justify-content: space-between; align-items: center; position: relative; z-index: 1; }
        .board-title { font-size: 13px; color: var(--muted); }
        .live { color: var(--green); font-size: 12px; display: flex; gap: 7px; align-items: center; }
        .live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(76,224,161,.12); }
        .latency { position: relative; z-index: 1; display: flex; align-items: end; gap: 12px; margin: 26px 0 22px; }
        .latency strong { font-size: 56px; letter-spacing: -.06em; line-height: 1; }
        .latency span { color: var(--green); font-weight: 700; padding-bottom: 6px; }
        .chart { height: 118px; display: flex; align-items: end; gap: 8px; padding: 10px 0 14px; border-bottom: 1px solid var(--line); position: relative; }
        .chart::after { content: ""; position: absolute; left: 0; right: 0; top: 53%; border-top: 1px dashed rgba(77,216,244,.24); }
        .bar { flex: 1; min-width: 7px; border-radius: 5px 5px 2px 2px; background: linear-gradient(to top, var(--primary-deep), var(--cyan)); opacity: .88; position: relative; z-index: 1; }
        .board-meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding-top: 17px; }
        .board-meta span { color: var(--faint); font-size: 11px; display: block; margin-bottom: 3px; }
        .board-meta strong { font-size: 15px; }

        .signal-strip { padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.018); }
        .signal-items { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
        .signal-item { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; }
        .signal-item i { color: var(--cyan); }

        .kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
        .kpi-card { padding: 25px; border: 1px solid var(--line); background: var(--panel); border-radius: var(--radius-md); }
        .kpi-card strong { display: block; font-size: 34px; letter-spacing: -.05em; margin-bottom: 4px; }
        .kpi-card span { color: var(--muted); font-size: 13px; }
        .kpi-card:nth-child(2) strong { color: var(--cyan); }
        .kpi-card:nth-child(3) strong { color: var(--green); }
        .kpi-card:nth-child(4) strong { color: var(--orange); }

        .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .service-card {
            padding: 28px;
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            background: linear-gradient(145deg, rgba(19,29,54,.94), rgba(13,20,38,.92));
            transition: .3s ease;
        }
        .service-card:hover { transform: translateY(-6px); border-color: rgba(100,117,255,.55); box-shadow: var(--shadow-soft); }
        .icon-box { width: 45px; height: 45px; border-radius: 14px; display: grid; place-items: center; background: rgba(100,117,255,.14); color: var(--cyan); font-size: 19px; margin-bottom: 23px; }
        .service-card p, .info-card p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
        .card-link { display: inline-flex; align-items: center; gap: 7px; margin-top: 22px; color: #b5c1ff; font-size: 13px; font-weight: 700; }

        .compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
        .compare-card { padding: 30px; border-radius: var(--radius-md); border: 1px solid var(--line); background: var(--panel); }
        .compare-card.highlight { border-color: rgba(100,117,255,.5); background: linear-gradient(145deg, rgba(40,49,103,.72), rgba(16,24,48,.95)); }
        .compare-title { display: flex; justify-content: space-between; align-items: center; margin-bottom: 23px; }
        .badge { border-radius: 99px; padding: 4px 10px; font-size: 11px; font-weight: 700; color: var(--cyan); background: rgba(77,216,244,.1); }
        .compare-list { list-style: none; margin: 0; padding: 0; }
        .compare-list li { display: flex; gap: 11px; color: var(--muted); font-size: 14px; padding: 11px 0; border-top: 1px solid var(--line); }
        .compare-list li i { color: var(--green); padding-top: 5px; }

        .milestone { display: grid; grid-template-columns: .78fr 1.22fr; gap: 65px; align-items: start; }
        .milestone-intro p { color: var(--muted); font-size: 16px; }
        .timeline { border-left: 1px solid var(--line-strong); padding-left: 30px; }
        .timeline-item { position: relative; padding-bottom: 30px; }
        .timeline-item:last-child { padding-bottom: 0; }
        .timeline-item::before { content: ""; position: absolute; width: 11px; height: 11px; border-radius: 50%; background: var(--primary); left: -36px; top: 7px; box-shadow: 0 0 0 6px rgba(100,117,255,.13); }
        .timeline-item small { color: var(--cyan); font-weight: 700; display: block; margin-bottom: 6px; }
        .timeline-item p { color: var(--muted); font-size: 14px; margin-bottom: 0; }

        .node-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
        .node-card { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--panel); }
        .node-card.large { grid-row: span 2; background: radial-gradient(circle at 80% 15%, rgba(77,216,244,.13), transparent 17rem), var(--panel); }
        .node-list { list-style: none; padding: 0; margin: 22px 0 0; }
        .node-list li { padding: 13px 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 15px; color: var(--muted); font-size: 14px; }
        .node-list b { color: var(--text); font-weight: 600; }
        .node-status { color: var(--green) !important; }

        .news-grid { display: grid; grid-template-columns: 1.15fr .85fr .85fr; gap: 18px; }
        .news-card { min-height: 220px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--panel); display: flex; flex-direction: column; justify-content: space-between; transition: .25s ease; }
        .news-card.featured { background: linear-gradient(145deg, rgba(35,48,101,.9), rgba(15,24,46,.96)); }
        .news-card:hover { transform: translateY(-4px); border-color: rgba(100,117,255,.5); }
        .news-tag { color: var(--cyan); font-size: 12px; font-weight: 700; }
        .news-card h3 { margin-top: 18px; font-size: 20px; }
        .news-card p { color: var(--muted); font-size: 14px; margin-bottom: 20px; }
        .news-date { color: var(--faint); font-size: 12px; }

        .trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
        .trust-item { padding: 23px; border: 1px solid var(--line); border-radius: var(--radius-md); background: rgba(16,24,45,.72); }
        .trust-item i { color: var(--cyan); font-size: 20px; margin-bottom: 18px; }
        .trust-item h3 { font-size: 17px; margin-bottom: 8px; }
        .trust-item p { color: var(--muted); font-size: 13px; margin-bottom: 0; }

        .quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .quote-card { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--panel); }
        .stars { color: var(--orange); font-size: 13px; letter-spacing: 2px; margin-bottom: 18px; }
        .quote-card blockquote { color: #dce4f7; font-size: 15px; margin: 0 0 22px; line-height: 1.8; }
        .quote-user { display: flex; align-items: center; gap: 11px; color: var(--muted); font-size: 13px; }
        .avatar { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; color: #fff; background: linear-gradient(135deg, var(--primary), var(--cyan)); font-size: 12px; font-weight: 700; }

        .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
        .faq-item { border: 1px solid var(--line); background: var(--panel); border-radius: var(--radius-md); padding: 22px 24px; }
        .faq-item summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 20px; font-weight: 700; }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after { content: "+"; color: var(--cyan); font-size: 22px; line-height: 1; }
        .faq-item[open] summary::after { content: "−"; }
        .faq-item p { color: var(--muted); font-size: 14px; margin: 15px 0 0; padding-top: 14px; border-top: 1px solid var(--line); }

        .final-cta { padding: 50px; border-radius: var(--radius-lg); border: 1px solid rgba(100,117,255,.38); background: radial-gradient(circle at 90% 0%, rgba(77,216,244,.2), transparent 25rem), linear-gradient(135deg, rgba(55,69,157,.75), rgba(18,28,57,.94)); display: flex; align-items: center; justify-content: space-between; gap: 30px; }
        .final-cta h2 { margin-bottom: 10px; font-size: clamp(28px, 4vw, 42px); }
        .final-cta p { color: #c4d0eb; max-width: 650px; margin-bottom: 0; }
        .final-cta .button { flex-shrink: 0; background: #fff; color: #2936a6; }
        .final-cta .button:hover { background: #dffaff; color: #18246e; }

        footer { padding: 52px 0 25px; background: #050813; border-top: 1px solid var(--line); }
        .footer-top { display: grid; grid-template-columns: 1.4fr .8fr .8fr .8fr; gap: 38px; padding-bottom: 42px; }
        .footer-brand p { max-width: 320px; color: var(--faint); font-size: 13px; margin-top: 17px; }
        .footer-col h3 { font-size: 14px; margin-bottom: 15px; color: #fff; }
        .footer-col a { display: block; color: var(--faint); font-size: 13px; margin: 9px 0; }
        .footer-col a:hover { color: var(--cyan); }
        .footer-bottom { border-top: 1px solid var(--line); padding-top: 20px; display: flex; justify-content: space-between; gap: 20px; color: var(--faint); font-size: 12px; }
        .footer-bottom span:last-child { text-align: right; }

        @media (max-width: 1024px) {
            .hero-grid { gap: 35px; }
            .milestone { gap: 35px; }
            .footer-top { grid-template-columns: 1.2fr 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .container { width: min(var(--container), calc(100% - 32px)); }
            .section { padding: 75px 0; }
            .main-nav { display: none; position: absolute; top: 76px; left: 16px; right: 16px; padding: 10px; flex-direction: column; align-items: stretch; background: #10182d; border: 1px solid var(--line); border-radius: 15px; box-shadow: var(--shadow); }
            .main-nav.open { display: flex; }
            .main-nav a { padding: 12px 14px; }
            .mobile-toggle { display: block; }
            .hero { padding: 60px 0 70px; }
            .hero-grid, .milestone, .node-layout { grid-template-columns: 1fr; }
            .hero-copy p { font-size: 16px; }
            .kpi-grid, .trust-grid { grid-template-columns: repeat(2, 1fr); }
            .service-grid, .quote-grid { grid-template-columns: 1fr 1fr; }
            .news-grid { grid-template-columns: 1fr 1fr; }
            .news-card.featured { grid-column: span 2; }
            .faq-grid { grid-template-columns: 1fr; }
            .final-cta { align-items: flex-start; flex-direction: column; padding: 35px 27px; }
            .footer-top { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            h1 { font-size: 42px; }
            h2 { font-size: 32px; }
            .nav-action .nav-download { display: none; }
            .signal-items { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
            .kpi-grid, .service-grid, .quote-grid, .news-grid, .trust-grid { grid-template-columns: 1fr; }
            .news-card.featured { grid-column: auto; }
            .board-meta { gap: 7px; }
            .latency strong { font-size: 48px; }
            .compare-grid { grid-template-columns: 1fr; }
            .footer-top { grid-template-columns: 1fr 1fr; gap: 25px 15px; }
            .footer-brand { grid-column: span 2; }
            .footer-bottom { flex-direction: column; }
            .footer-bottom span:last-child { text-align: left; }
        }

/* roulang page: category1 */
:root {
      --bg:#070b17;
      --bg-soft:#0c1224;
      --panel:#10182d;
      --panel-light:#141f38;
      --line:rgba(153,177,224,.16);
      --line-strong:rgba(153,177,224,.28);
      --text:#f4f7ff;
      --muted:#aab8d2;
      --faint:#7483a1;
      --primary:#6475ff;
      --primary-deep:#4356df;
      --cyan:#4dd8f4;
      --green:#4ce0a1;
      --orange:#ffb86b;
      --radius-lg:28px;
      --radius-md:18px;
      --radius-sm:12px;
      --shadow:0 24px 80px rgba(0,0,0,.28);
      --shadow-soft:0 14px 36px rgba(0,0,0,.18);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:
        radial-gradient(circle at 10% 0%,rgba(73,88,220,.18),transparent 32rem),
        radial-gradient(circle at 90% 18%,rgba(54,180,219,.08),transparent 28rem),
        var(--bg);
      color:var(--text);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.75;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.28;
      background-image:linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);
      background-size:72px 72px;
      mask-image:linear-gradient(to bottom,black,transparent 74%);
    }
    a{color:inherit;text-decoration:none;transition:.25s ease}
    a:hover{color:var(--cyan)}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button:focus-visible,a:focus-visible{outline:3px solid rgba(77,216,244,.7);outline-offset:4px}
    h1,h2,h3,h4,p{margin-top:0}
    h1,h2,h3,h4{color:var(--text);line-height:1.2}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .section{padding:104px 0;position:relative}
    .section-dark{background:rgba(255,255,255,.018);border-top:1px solid rgba(255,255,255,.035);border-bottom:1px solid rgba(255,255,255,.035)}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--cyan);
      font-size:12px;
      font-weight:700;
      letter-spacing:.14em;
      margin-bottom:16px;
    }
    .eyebrow:before{content:"";width:24px;height:1px;background:var(--cyan)}
    .section-heading{max-width:720px;margin-bottom:46px}
    .section-heading h2{font-size:clamp(30px,4vw,48px);letter-spacing:-.05em;margin-bottom:17px}
    .section-heading p{color:var(--muted);font-size:17px;max-width:690px}
    .text-gradient{
      background:linear-gradient(100deg,#fff 10%,#91a2ff 56%,#4dd8f4 100%);
      -webkit-background-clip:text;background-clip:text;color:transparent
    }
    .site-header{
      position:sticky;top:0;z-index:50;
      background:rgba(7,11,23,.78);
      border-bottom:1px solid rgba(255,255,255,.08);
      backdrop-filter:blur(18px)
    }
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:inline-flex;align-items:center;gap:12px;font-weight:800;font-size:20px;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{
      width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--cyan));color:#fff;
      box-shadow:0 8px 24px rgba(76,110,255,.34)
    }
    .main-nav{display:flex;align-items:center;gap:8px}
    .main-nav a{padding:9px 15px;border-radius:10px;color:var(--muted);font-size:14px;font-weight:600}
    .main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(100,117,255,.13)}
    .nav-action{display:flex;align-items:center;gap:12px}
    .nav-download{padding:10px 17px!important;color:#fff!important;background:var(--primary);box-shadow:0 8px 20px rgba(100,117,255,.24)}
    .nav-download:hover{background:#7a88ff!important;transform:translateY(-2px)}
    .mobile-toggle{display:none;border:1px solid var(--line);color:#fff;background:var(--panel);border-radius:10px;padding:9px 12px}
    .hero{padding:88px 0 96px}
    .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:72px;align-items:center}
    .hero h1{font-size:clamp(42px,6vw,76px);letter-spacing:-.065em;margin-bottom:24px;max-width:750px}
    .hero-copy p{color:var(--muted);font-size:18px;max-width:700px;margin-bottom:30px}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap}
    .button{
      border-radius:12px;padding:13px 21px;font-weight:700;border:1px solid transparent;
      display:inline-flex;align-items:center;gap:9px;transition:.25s ease;margin:0
    }
    .button.primary{background:var(--primary);color:#fff;box-shadow:0 12px 28px rgba(100,117,255,.27)}
    .button.primary:hover{background:#7b8aff;transform:translateY(-3px);color:#fff}
    .button.ghost{color:#e5eaff;border-color:var(--line-strong);background:rgba(255,255,255,.035)}
    .button.ghost:hover{background:rgba(100,117,255,.12);border-color:rgba(100,117,255,.55);transform:translateY(-3px)}
    .hero-notes{display:flex;gap:24px;margin-top:28px;flex-wrap:wrap}
    .hero-note{display:flex;gap:9px;align-items:center;color:var(--faint);font-size:13px}
    .hero-note i{color:var(--green)}
    .network-board{
      position:relative;padding:25px;border:1px solid var(--line);
      border-radius:var(--radius-lg);background:linear-gradient(145deg,rgba(20,31,56,.94),rgba(10,16,34,.96));
      box-shadow:var(--shadow);overflow:hidden
    }
    .network-board:before{
      content:"";position:absolute;width:260px;height:260px;border-radius:50%;
      background:rgba(100,117,255,.18);filter:blur(8px);right:-90px;top:-100px
    }
    .board-top{position:relative;display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:22px}
    .board-title{font-size:13px;color:var(--muted)}
    .live-badge{display:inline-flex;align-items:center;gap:7px;border:1px solid rgba(76,224,161,.25);border-radius:30px;padding:6px 10px;color:var(--green);font-size:11px;background:rgba(76,224,161,.07)}
    .live-badge i{font-size:8px}
    .route-map{position:relative;height:260px;border:1px solid rgba(153,177,224,.12);border-radius:20px;background:radial-gradient(circle at 50% 50%,rgba(100,117,255,.16),transparent 54%),#0b1327;overflow:hidden}
    .route-map:before,.route-map:after{content:"";position:absolute;inset:23% 9%;border:1px dashed rgba(77,216,244,.22);border-radius:50%;transform:rotate(-22deg)}
    .route-map:after{inset:38% 17%;transform:rotate(25deg);border-color:rgba(100,117,255,.3)}
    .route-line{position:absolute;left:17%;top:50%;width:66%;height:1px;background:linear-gradient(90deg,transparent,var(--cyan),var(--primary),transparent);transform:rotate(-12deg);box-shadow:0 0 16px rgba(77,216,244,.9)}
    .map-node{position:absolute;width:12px;height:12px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 7px rgba(77,216,244,.12),0 0 22px var(--cyan)}
    .map-node.one{left:16%;top:60%}.map-node.two{left:46%;top:40%;background:var(--primary);box-shadow:0 0 0 7px rgba(100,117,255,.14),0 0 22px var(--primary)}.map-node.three{right:15%;top:29%;background:var(--green);box-shadow:0 0 0 7px rgba(76,224,161,.13),0 0 22px var(--green)}
    .node-label{position:absolute;color:var(--muted);font-size:11px}.node-label.a{left:11%;bottom:25%}.node-label.b{left:41%;top:26%}.node-label.c{right:8%;top:16%}
    .board-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding-top:19px}
    .board-meta span{color:var(--faint);font-size:11px;display:block;margin-bottom:3px}.board-meta strong{font-size:15px}
    .signal-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;background:rgba(255,255,255,.012)}
    .signal-items{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
    .signal-item{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px}.signal-item i{color:var(--cyan)}
    .kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .kpi-card{padding:25px;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-md);transition:.25s ease}
    .kpi-card:hover{border-color:rgba(100,117,255,.45);transform:translateY(-5px);box-shadow:var(--shadow-soft)}
    .kpi-card strong{display:block;font-size:34px;letter-spacing:-.05em;margin-bottom:4px}.kpi-card span{color:var(--muted);font-size:13px}
    .network-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:stretch}
    .network-card{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--panel);padding:31px;transition:.25s ease}
    .network-card:hover{border-color:rgba(77,216,244,.32);transform:translateY(-4px);box-shadow:var(--shadow-soft)}
    .network-card.large{background:linear-gradient(135deg,rgba(100,117,255,.14),rgba(16,24,45,.98) 62%)}
    .network-card h3{font-size:25px;margin:18px 0 12px}.network-card p{color:var(--muted);margin-bottom:0}
    .icon-box{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;color:var(--cyan);background:rgba(77,216,244,.1);border:1px solid rgba(77,216,244,.18);font-size:19px}
    .node-list{display:grid;gap:12px;margin-top:25px}
    .node-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 15px;border:1px solid rgba(153,177,224,.12);border-radius:13px;background:rgba(7,11,23,.32)}
    .node-name{display:flex;align-items:center;gap:10px;font-weight:700;font-size:14px}.node-name i{font-size:8px;color:var(--green)}
    .node-status{font-size:12px;color:var(--green)}.node-latency{font-size:13px;color:var(--muted)}
    .tag{display:inline-flex;align-items:center;border-radius:30px;padding:5px 10px;font-size:11px;font-weight:700;color:var(--cyan);background:rgba(77,216,244,.08);border:1px solid rgba(77,216,244,.18)}
    .split-section{display:grid;grid-template-columns:.82fr 1.18fr;gap:78px;align-items:start}
    .split-copy h2{font-size:clamp(30px,4vw,48px);letter-spacing:-.05em;margin-bottom:18px}.split-copy p{color:var(--muted);font-size:17px}
    .benefit-list{display:grid;gap:14px}.benefit-item{display:flex;gap:16px;padding:19px 0;border-bottom:1px solid var(--line)}.benefit-item:last-child{border-bottom:0}
    .benefit-item i{color:var(--green);font-size:18px;margin-top:5px}.benefit-item h3{font-size:17px;margin-bottom:4px}.benefit-item p{color:var(--muted);font-size:14px;margin:0}
    .route-table{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--panel)}
    .route-head,.route-item{display:grid;grid-template-columns:1.25fr .8fr .8fr .8fr;gap:16px;align-items:center;padding:18px 24px}
    .route-head{background:rgba(100,117,255,.1);color:var(--muted);font-size:12px}.route-item{border-top:1px solid var(--line);font-size:14px}.route-item:hover{background:rgba(255,255,255,.025)}
    .route-item strong{font-size:14px}.route-item span{color:var(--muted)}.route-item .good{color:var(--green)}
    .route-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--green);margin-right:8px;box-shadow:0 0 10px var(--green)}
    .quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
    .quote-card{padding:27px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--panel)}
    .quote-card p{color:#d8e0f1;font-size:15px;min-height:100px}.quote-card footer{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:13px}
    .avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#5367f4,#36bfd8);color:#fff;font-weight:800}
    .stars{color:var(--orange);font-size:12px;margin-bottom:16px;letter-spacing:2px}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px;align-items:start}
    .faq-list{display:grid;gap:12px}.faq-item{border:1px solid var(--line);border-radius:15px;background:var(--panel);overflow:hidden}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;gap:15px;padding:20px 22px;background:none;border:0;color:var(--text);text-align:left;font-weight:700;cursor:pointer}
    .faq-question i{color:var(--cyan);transition:.25s}.faq-answer{display:none;padding:0 22px 20px;color:var(--muted);font-size:14px}.faq-item.open .faq-answer{display:block}.faq-item.open .faq-question i{transform:rotate(45deg)}
    .cta-section{padding:36px 0 104px}.cta-box{position:relative;overflow:hidden;border:1px solid rgba(100,117,255,.38);border-radius:var(--radius-lg);padding:54px 60px;background:linear-gradient(120deg,rgba(67,86,223,.45),rgba(16,24,45,.92) 62%);display:flex;align-items:center;justify-content:space-between;gap:35px}
    .cta-box:after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;right:-110px;top:-150px;background:rgba(77,216,244,.18);filter:blur(5px)}
    .cta-box h2{position:relative;z-index:1;font-size:clamp(28px,4vw,44px);letter-spacing:-.05em;margin-bottom:10px}.cta-box p{position:relative;z-index:1;color:#c0cbea;margin:0;max-width:600px}
    .cta-box .button{position:relative;z-index:1;white-space:nowrap}
    footer{border-top:1px solid var(--line);padding:58px 0 24px;background:rgba(4,7,16,.48)}
    .footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}.footer-brand p{color:var(--muted);font-size:14px;max-width:300px;margin-top:18px}
    .footer-col{display:flex;flex-direction:column;gap:10px}.footer-col h3{font-size:14px;margin-bottom:7px}.footer-col a{color:var(--muted);font-size:13px}.footer-col a:hover{color:var(--cyan)}
    .footer-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:var(--faint);font-size:12px}
    @media(max-width:1024px){.hero-grid,.network-grid,.split-section,.faq-layout{gap:38px}.kpi-grid{grid-template-columns:repeat(2,1fr)}.main-nav{gap:2px}.main-nav a{padding-left:10px;padding-right:10px}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 34px))}.section{padding:76px 0}.hero{padding:64px 0 76px}.hero-grid,.network-grid,.split-section,.faq-layout{grid-template-columns:1fr}.hero h1{font-size:clamp(40px,12vw,62px)}.main-nav{display:none;position:absolute;left:17px;right:17px;top:67px;padding:12px;flex-direction:column;align-items:stretch;background:rgba(12,18,36,.98);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.main-nav.open{display:flex}.main-nav a{padding:12px 14px}.mobile-toggle{display:block}.nav-action{margin-left:auto}.nav-download{display:none}.signal-items{display:grid;grid-template-columns:1fr 1fr}.route-head,.route-item{grid-template-columns:1.2fr .8fr .8fr;padding-left:16px;padding-right:16px}.route-head span:nth-child(3),.route-item span:nth-child(3){display:none}.quote-grid{grid-template-columns:1fr}.cta-box{padding:38px 28px;display:block}.cta-box .button{margin-top:24px}.footer-top{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}}
    @media(max-width:520px){.brand{font-size:18px}.signal-items{grid-template-columns:1fr}.kpi-grid{grid-template-columns:1fr 1fr;gap:10px}.kpi-card{padding:18px}.kpi-card strong{font-size:27px}.network-card{padding:23px}.board-meta{gap:7px}.board-meta strong{font-size:13px}.route-head,.route-item{grid-template-columns:1fr .8fr;font-size:13px}.route-head span:nth-child(4),.route-item span:nth-child(4){display:none}.footer-top{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:7px}.hero-actions .button{width:100%;justify-content:center}}

/* roulang page: category2 */
:root {
      --bg:#070b17;
      --bg-soft:#0c1224;
      --panel:#10182d;
      --panel-light:#141f38;
      --line:rgba(153,177,224,.16);
      --line-strong:rgba(153,177,224,.28);
      --text:#f4f7ff;
      --muted:#aab8d2;
      --faint:#7483a1;
      --primary:#6475ff;
      --primary-deep:#4356df;
      --cyan:#4dd8f4;
      --green:#4ce0a1;
      --orange:#ffb86b;
      --radius-lg:28px;
      --radius-md:18px;
      --radius-sm:12px;
      --shadow:0 24px 80px rgba(0,0,0,.28);
      --shadow-soft:0 14px 36px rgba(0,0,0,.18);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:
        radial-gradient(circle at 12% 0%,rgba(73,88,220,.18),transparent 32rem),
        radial-gradient(circle at 90% 18%,rgba(54,180,219,.08),transparent 28rem),
        var(--bg);
      color:var(--text);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.75;
      overflow-x:hidden
    }
    a{color:inherit;text-decoration:none;transition:.25s ease}
    a:hover{color:var(--cyan)}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button:focus-visible,a:focus-visible{outline:3px solid rgba(77,216,244,.7);outline-offset:4px}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .section{padding:104px 0;position:relative}
    .section-dark{background:rgba(255,255,255,.018);border-top:1px solid rgba(255,255,255,.035);border-bottom:1px solid rgba(255,255,255,.035)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:12px;font-weight:700;letter-spacing:.14em;margin-bottom:16px}
    .eyebrow:before{content:"";width:24px;height:1px;background:var(--cyan)}
    .section-heading{max-width:720px;margin-bottom:46px}
    .section-heading h2{font-size:clamp(30px,4vw,46px);line-height:1.2;letter-spacing:-.045em;margin:0 0 16px}
    .section-heading p{color:var(--muted);font-size:17px;max-width:690px;margin:0}
    .text-gradient{background:linear-gradient(100deg,#fff 10%,#91a2ff 56%,#4dd8f4 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(7,11,23,.78);border-bottom:1px solid rgba(255,255,255,.08);backdrop-filter:blur(18px)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:inline-flex;align-items:center;gap:12px;font-weight:800;font-size:20px;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--cyan));color:#fff;box-shadow:0 8px 24px rgba(76,110,255,.34)}
    .main-nav{display:flex;align-items:center;gap:8px}
    .main-nav a{padding:9px 15px;border-radius:10px;color:var(--muted);font-size:14px;font-weight:600}
    .main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(100,117,255,.13)}
    .nav-action{display:flex;align-items:center;gap:12px}
    .nav-download{padding:10px 17px!important;color:#fff!important;background:var(--primary);box-shadow:0 8px 20px rgba(100,117,255,.24)}
    .nav-download:hover{background:#7a88ff!important;transform:translateY(-2px)}
    .mobile-toggle{display:none;border:1px solid var(--line);color:#fff;background:var(--panel);border-radius:10px;padding:9px 12px}
    .button{border-radius:12px;padding:13px 21px;font-weight:700;border:1px solid transparent;display:inline-flex;align-items:center;gap:9px;transition:.25s ease;margin:0}
    .button.primary{background:var(--primary);color:#fff;box-shadow:0 12px 28px rgba(100,117,255,.27)}
    .button.primary:hover{background:#7b8aff;transform:translateY(-3px);color:#fff}
    .button.ghost{color:#e5eaff;border-color:var(--line-strong);background:rgba(255,255,255,.035)}
    .button.ghost:hover{background:rgba(100,117,255,.12);border-color:rgba(100,117,255,.55);transform:translateY(-3px)}
    .hero{padding:80px 0 92px}
    .hero-grid{display:grid;grid-template-columns:1fr .92fr;gap:70px;align-items:center}
    .hero h1{font-size:clamp(42px,6vw,76px);line-height:1.08;letter-spacing:-.065em;margin:0 0 24px;max-width:720px}
    .hero-copy p{color:var(--muted);font-size:18px;max-width:680px;margin:0 0 30px}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap}
    .hero-notes{display:flex;gap:24px;margin-top:28px;flex-wrap:wrap}
    .hero-note{display:flex;gap:9px;align-items:center;color:var(--faint);font-size:13px}
    .hero-note i{color:var(--green)}
    .compare-board{position:relative;padding:26px;border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(145deg,rgba(20,31,56,.92),rgba(10,16,32,.88));box-shadow:var(--shadow);overflow:hidden}
    .compare-board:after{content:"";position:absolute;width:180px;height:180px;right:-60px;top:-70px;border-radius:50%;background:rgba(77,216,244,.13);filter:blur(6px)}
    .board-top{display:flex;justify-content:space-between;align-items:center;position:relative;z-index:1}
    .board-title{font-size:13px;color:var(--muted)}
    .live-dot{display:flex;align-items:center;gap:7px;color:var(--green);font-size:12px}
    .live-dot i{font-size:8px}
    .compare-row{display:grid;grid-template-columns:1fr 36px 1fr;gap:12px;align-items:center;margin:28px 0 22px;position:relative;z-index:1}
    .compare-card{min-height:190px;padding:20px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.035)}
    .compare-card.after{border-color:rgba(77,216,244,.42);background:linear-gradient(145deg,rgba(77,216,244,.12),rgba(100,117,255,.12))}
    .compare-label{display:flex;justify-content:space-between;color:var(--faint);font-size:12px;margin-bottom:18px}
    .compare-card.after .compare-label{color:var(--cyan)}
    .metric{font-size:40px;line-height:1;font-weight:800;letter-spacing:-.06em;margin-bottom:12px}
    .metric small{font-size:14px;letter-spacing:0;color:var(--muted);font-weight:500}
    .metric-desc{font-size:13px;color:var(--muted)}
    .compare-arrow{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:rgba(100,117,255,.18);color:var(--cyan)}
    .board-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding-top:17px;border-top:1px solid var(--line);position:relative;z-index:1}
    .board-meta span{color:var(--faint);font-size:11px;display:block;margin-bottom:3px}
    .board-meta strong{font-size:15px}
    .signal-items{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
    .signal-item{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px}
    .signal-item i{color:var(--cyan)}
    .scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .scenario-card{display:grid;grid-template-columns:58px 1fr;gap:20px;padding:28px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--panel);transition:.28s ease}
    .scenario-card:hover{transform:translateY(-5px);border-color:rgba(100,117,255,.55);box-shadow:var(--shadow-soft)}
    .scenario-icon{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;color:#fff;font-size:21px;background:linear-gradient(135deg,rgba(100,117,255,.95),rgba(77,216,244,.72))}
    .scenario-card h3{margin:0 0 7px;font-size:21px}
    .scenario-card p{margin:0;color:var(--muted);font-size:14px}
    .split-section{display:grid;grid-template-columns:.82fr 1.18fr;gap:76px;align-items:start}
    .feature-list{display:grid;gap:15px}
    .feature-item{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
    .feature-item:last-child{border-bottom:0}
    .feature-item i{color:var(--cyan);font-size:18px;margin-top:6px;width:22px}
    .feature-item h3{font-size:18px;margin:0 0 5px}
    .feature-item p{color:var(--muted);font-size:14px;margin:0}
    .route-panel{padding:28px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--panel-light)}
    .route-panel h3{margin:0 0 22px;font-size:22px}
    .route-line{position:relative;padding-left:30px}
    .route-line:before{content:"";position:absolute;left:8px;top:12px;bottom:14px;width:1px;background:linear-gradient(var(--cyan),rgba(100,117,255,.15))}
    .route-step{position:relative;padding:0 0 26px}
    .route-step:last-child{padding-bottom:0}
    .route-step:before{content:"";position:absolute;left:-26px;top:8px;width:11px;height:11px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 5px rgba(100,117,255,.15)}
    .route-step strong{display:block;margin-bottom:4px}
    .route-step span{color:var(--muted);font-size:14px}
    .kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .kpi-card{padding:25px;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-md)}
    .kpi-card strong{display:block;font-size:34px;letter-spacing:-.05em;margin-bottom:4px}
    .kpi-card span{color:var(--muted);font-size:13px}
    .kpi-card:nth-child(2) strong{color:var(--cyan)}
    .kpi-card:nth-child(3) strong{color:var(--green)}
    .kpi-card:nth-child(4) strong{color:var(--orange)}
    .quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .quote-card{padding:27px;border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(16,24,45,.76)}
    .quote-card p{font-size:16px;line-height:1.8;margin:0 0 22px;color:#dce5fb}
    .quote-user{display:flex;align-items:center;gap:11px;color:var(--muted);font-size:13px}
    .avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:rgba(100,117,255,.2);color:var(--cyan);font-weight:700}
    .stars{color:var(--orange);font-size:12px;margin-bottom:14px;letter-spacing:2px}
    .faq-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .faq-item{padding:22px 24px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--panel)}
    .faq-item h3{font-size:17px;margin:0 0 8px}
    .faq-item p{font-size:14px;color:var(--muted);margin:0}
    .cta-section{padding:76px 0}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:42px 48px;border:1px solid rgba(100,117,255,.38);border-radius:var(--radius-lg);background:linear-gradient(110deg,rgba(67,86,223,.3),rgba(20,31,56,.78));box-shadow:var(--shadow)}
    .cta-box h2{margin:0 0 8px;font-size:32px;letter-spacing:-.04em}
    .cta-box p{margin:0;color:var(--muted)}
    footer{border-top:1px solid rgba(255,255,255,.08);padding:58px 0 25px;background:rgba(3,6,15,.35)}
    .footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
    .footer-brand p{color:var(--muted);font-size:14px;max-width:330px;margin:18px 0 0}
    .footer-col{display:flex;flex-direction:column;gap:10px}
    .footer-col h3{font-size:14px;margin:0 0 8px;color:#fff}
    .footer-col a{color:var(--muted);font-size:13px}
    .footer-col a:hover{color:var(--cyan)}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:26px;margin-top:42px;border-top:1px solid var(--line);color:var(--faint);font-size:12px}
    @media(max-width:1024px){
      .hero-grid,.split-section{grid-template-columns:1fr;gap:42px}
      .hero{padding-top:62px}
      .hero-copy{max-width:780px}
      .kpi-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .section{padding:76px 0}
      .main-nav{display:none;position:absolute;left:16px;right:16px;top:70px;padding:12px;flex-direction:column;align-items:stretch;background:rgba(12,18,36,.98);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
      .main-nav.is-open{display:flex}
      .main-nav a{padding:12px 14px}
      .mobile-toggle{display:block}
      .nav-action{margin-left:auto}
      .nav-download{display:none}
      .hero h1{font-size:clamp(40px,12vw,62px)}
      .scenario-grid,.quote-grid,.faq-list{grid-template-columns:1fr}
      .cta-box{align-items:flex-start;flex-direction:column;padding:32px 26px}
      .footer-top{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      .nav-wrap{min-height:68px}
      .brand{font-size:18px}
      .hero{padding:48px 0 65px}
      .hero-copy p{font-size:16px}
      .hero-actions .button{width:100%;justify-content:center}
      .compare-row{grid-template-columns:1fr;gap:10px}
      .compare-arrow{margin:auto;transform:rotate(90deg)}
      .board-meta{grid-template-columns:1fr 1fr}
      .kpi-grid{grid-template-columns:1fr 1fr;gap:10px}
      .kpi-card{padding:18px}
      .kpi-card strong{font-size:27px}
      .scenario-card{grid-template-columns:46px 1fr;padding:22px 18px;gap:13px}
      .scenario-icon{width:44px;height:44px;border-radius:13px;font-size:17px}
      .footer-top{grid-template-columns:1fr;gap:28px}
      .footer-bottom{flex-direction:column;gap:6px}
    }

/* roulang page: category3 */
:root {
      --bg:#070b17;
      --bg-soft:#0c1224;
      --panel:#10182d;
      --panel-light:#141f38;
      --line:rgba(153,177,224,.16);
      --line-strong:rgba(153,177,224,.28);
      --text:#f4f7ff;
      --muted:#aab8d2;
      --faint:#7483a1;
      --primary:#6475ff;
      --primary-deep:#4356df;
      --cyan:#4dd8f4;
      --green:#4ce0a1;
      --orange:#ffb86b;
      --radius-lg:28px;
      --radius-md:18px;
      --radius-sm:12px;
      --shadow:0 24px 80px rgba(0,0,0,.28);
      --shadow-soft:0 14px 36px rgba(0,0,0,.18);
      --container:1180px;
    }
    html{scroll-behavior:smooth}
    *{box-sizing:border-box}
    body{
      margin:0;
      background:
        radial-gradient(circle at 10% 0%,rgba(73,88,220,.18),transparent 32rem),
        radial-gradient(circle at 90% 18%,rgba(54,180,219,.08),transparent 28rem),
        var(--bg);
      color:var(--text);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.75;
      overflow-x:hidden
    }
    a{color:inherit;text-decoration:none;transition:.25s ease}
    a:hover{color:var(--cyan)}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(77,216,244,.7);outline-offset:4px}
    h1,h2,h3,h4,p{margin-top:0}
    h1,h2,h3,h4{line-height:1.25}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .section{padding:96px 0;position:relative}
    .section-dark{background:rgba(255,255,255,.018);border-top:1px solid rgba(255,255,255,.035);border-bottom:1px solid rgba(255,255,255,.035)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px}
    .eyebrow:before{content:"";width:24px;height:1px;background:var(--cyan)}
    .section-heading{max-width:720px;margin-bottom:42px}
    .section-heading h2{font-size:clamp(28px,4vw,44px);letter-spacing:-.045em;margin-bottom:16px}
    .section-heading p{color:var(--muted);font-size:17px;max-width:690px}
    .text-gradient{background:linear-gradient(100deg,#fff 10%,#91a2ff 56%,#4dd8f4 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(7,11,23,.78);border-bottom:1px solid rgba(255,255,255,.08);backdrop-filter:blur(18px)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:inline-flex;align-items:center;gap:12px;font-weight:800;font-size:20px;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--cyan));color:#fff;box-shadow:0 8px 24px rgba(76,110,255,.34)}
    .main-nav{display:flex;align-items:center;gap:8px}
    .main-nav a{padding:9px 15px;border-radius:10px;color:var(--muted);font-size:14px;font-weight:600}
    .main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(100,117,255,.13)}
    .nav-action{display:flex;align-items:center;gap:12px}
    .nav-download{padding:10px 17px!important;color:#fff!important;background:var(--primary);box-shadow:0 8px 20px rgba(100,117,255,.24)}
    .nav-download:hover{background:#7a88ff!important;transform:translateY(-2px)}
    .mobile-toggle{display:none;border:1px solid var(--line);color:#fff;background:var(--panel);border-radius:10px;padding:9px 12px}
    .button{border-radius:12px;padding:13px 21px;font-weight:700;border:1px solid transparent;display:inline-flex;align-items:center;gap:9px;transition:.25s ease;margin:0}
    .button.primary{background:var(--primary);color:#fff;box-shadow:0 12px 28px rgba(100,117,255,.27)}
    .button.primary:hover{background:#7b8aff;transform:translateY(-3px);color:#fff}
    .button.ghost{color:#e5eaff;border-color:var(--line-strong);background:rgba(255,255,255,.035)}
    .button.ghost:hover{background:rgba(100,117,255,.12);border-color:rgba(100,117,255,.55);transform:translateY(-3px)}
    .hero{padding:78px 0 88px}
    .hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:68px;align-items:center}
    .hero h1{font-size:clamp(40px,5.8vw,72px);letter-spacing:-.065em;margin-bottom:22px;max-width:720px}
    .hero-copy p{color:var(--muted);font-size:18px;max-width:670px;margin-bottom:30px}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap}
    .hero-notes{display:flex;gap:24px;margin-top:28px;flex-wrap:wrap}
    .hero-note{display:flex;gap:9px;align-items:center;color:var(--faint);font-size:13px}
    .hero-note i{color:var(--green)}
    .choice-board{position:relative;border:1px solid var(--line);background:linear-gradient(145deg,rgba(20,31,56,.96),rgba(10,17,35,.94));border-radius:var(--radius-lg);padding:25px;box-shadow:var(--shadow);overflow:hidden}
    .choice-board:before{content:"";position:absolute;width:220px;height:220px;border-radius:50%;background:rgba(100,117,255,.16);filter:blur(8px);right:-80px;top:-80px}
    .board-top{display:flex;align-items:center;justify-content:space-between;gap:20px;position:relative}
    .board-title{font-size:13px;color:var(--muted)}
    .live-badge{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:12px}
    .live-badge i{font-size:8px}
    .question{position:relative;margin:26px 0 20px;padding:21px;border-radius:16px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.07)}
    .question small{color:var(--faint);display:block;margin-bottom:7px}
    .question strong{font-size:21px;display:block}
    .option-list{display:grid;gap:10px;position:relative}
    .option{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 15px;border:1px solid var(--line);border-radius:13px;color:var(--muted);background:rgba(7,11,23,.42)}
    .option.active{border-color:rgba(100,117,255,.8);background:rgba(100,117,255,.14);color:#fff}
    .option span{display:flex;align-items:center;gap:10px}
    .option i{color:var(--cyan)}
    .board-result{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:22px;margin-top:22px;border-top:1px solid var(--line)}
    .board-result small{display:block;color:var(--faint);font-size:11px}
    .board-result strong{font-size:20px}
    .score{color:var(--green)!important}
    .marquee{padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.02);overflow:hidden}
    .marquee-track{display:flex;justify-content:center;gap:42px;white-space:nowrap;color:var(--faint);font-size:13px}
    .marquee-track span{display:inline-flex;align-items:center;gap:10px}
    .marquee-track i{color:var(--cyan)}
    .plan-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .plan-card{position:relative;padding:28px 23px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--panel);transition:.28s ease}
    .plan-card:hover{transform:translateY(-7px);border-color:rgba(100,117,255,.65);box-shadow:var(--shadow-soft)}
    .plan-card.featured{background:linear-gradient(155deg,rgba(81,96,225,.26),rgba(16,24,45,.98));border-color:rgba(100,117,255,.72)}
    .plan-label{display:inline-flex;color:var(--cyan);font-size:12px;font-weight:700;padding:5px 10px;border-radius:20px;background:rgba(77,216,244,.1);margin-bottom:17px}
    .plan-card h3{font-size:23px;margin-bottom:8px}
    .plan-card p{color:var(--muted);font-size:13px;min-height:50px}
    .price{font-size:39px;font-weight:800;letter-spacing:-.06em;margin:19px 0 20px}
    .price small{font-size:13px;color:var(--faint);font-weight:500;letter-spacing:0}
    .plan-list{list-style:none;padding:0;margin:0 0 24px}
    .plan-list li{display:flex;gap:9px;align-items:flex-start;padding:8px 0;color:var(--muted);font-size:13px;border-bottom:1px solid rgba(255,255,255,.055)}
    .plan-list li:last-child{border-bottom:0}
    .plan-list i{color:var(--green);margin-top:5px}
    .plan-card .button{width:100%;justify-content:center}
    .comparison{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:stretch}
    .compare-panel,.signal-panel{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--panel);padding:29px}
    .compare-panel h3,.signal-panel h3{font-size:24px;margin-bottom:10px}
    .compare-panel>p,.signal-panel>p{color:var(--muted);font-size:14px;margin-bottom:24px}
    .compare-row{display:grid;grid-template-columns:1.25fr .8fr .8fr .8fr;align-items:center;border-bottom:1px solid var(--line);padding:14px 0;gap:12px;font-size:13px}
    .compare-row:first-child{color:var(--faint);padding-top:0}
    .compare-row strong{font-weight:700}
    .compare-row span{color:var(--muted)}
    .compare-row i{color:var(--green)}
    .signal-list{display:grid;gap:15px}
    .signal-item{display:flex;gap:13px;align-items:flex-start;padding:15px;border-radius:14px;background:rgba(255,255,255,.035)}
    .signal-item>i{width:32px;height:32px;display:grid;place-items:center;color:var(--cyan);background:rgba(77,216,244,.1);border-radius:10px}
    .signal-item strong{display:block;font-size:14px;margin-bottom:3px}
    .signal-item span{display:block;color:var(--muted);font-size:12px}
    .fit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .fit-card{padding:25px;border-left:2px solid var(--primary);background:rgba(255,255,255,.025);border-radius:0 var(--radius-md) var(--radius-md) 0}
    .fit-card:nth-child(2){border-color:var(--cyan)}
    .fit-card:nth-child(3){border-color:var(--green)}
    .fit-card i{font-size:24px;color:var(--primary);margin-bottom:18px}
    .fit-card:nth-child(2) i{color:var(--cyan)}
    .fit-card:nth-child(3) i{color:var(--green)}
    .fit-card h3{font-size:19px;margin-bottom:9px}
    .fit-card p{color:var(--muted);font-size:14px;margin-bottom:0}
    .assurance-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
    .assurance-card{padding:23px;border:1px solid var(--line);background:rgba(255,255,255,.025);border-radius:var(--radius-md)}
    .assurance-card strong{display:block;font-size:30px;letter-spacing:-.05em;margin-bottom:3px}
    .assurance-card span{color:var(--muted);font-size:13px}
    .faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:58px;align-items:start}
    .faq-intro p{color:var(--muted)}
    .faq-list{display:grid;gap:11px}
    .faq-item{border:1px solid var(--line);border-radius:14px;background:var(--panel);overflow:hidden}
    .faq-item summary{cursor:pointer;list-style:none;padding:19px 21px;font-weight:700;display:flex;justify-content:space-between;gap:20px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";color:var(--cyan);font-size:21px;line-height:1}
    .faq-item[open] summary:after{content:"−"}
    .faq-answer{padding:0 21px 20px;color:var(--muted);font-size:14px}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:43px 48px;border:1px solid rgba(100,117,255,.35);border-radius:var(--radius-lg);background:linear-gradient(110deg,rgba(63,77,189,.34),rgba(15,28,54,.85))}
    .cta-box h2{font-size:clamp(27px,4vw,42px);margin-bottom:10px}
    .cta-box p{color:#c0c9df;margin-bottom:0;max-width:620px}
    footer{padding:62px 0 25px;border-top:1px solid var(--line);background:rgba(0,0,0,.16)}
    .footer-top{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:35px;padding-bottom:45px}
    .footer-brand p{color:var(--muted);font-size:14px;max-width:330px;margin-top:18px}
    .footer-col{display:flex;flex-direction:column;gap:10px}
    .footer-col h3{font-size:14px;margin-bottom:8px}
    .footer-col a{color:var(--muted);font-size:13px}
    .footer-col a:hover{color:var(--cyan)}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:22px;border-top:1px solid var(--line);color:var(--faint);font-size:12px}
    @media(max-width:1024px){
      .hero-grid,.comparison{grid-template-columns:1fr 1fr;gap:30px}
      .plan-grid{grid-template-columns:repeat(2,1fr)}
      .assurance-grid{grid-template-columns:repeat(2,1fr)}
      .footer-top{grid-template-columns:1.5fr 1fr 1fr}
      .footer-col:last-child{grid-column:2}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .nav-wrap{min-height:68px}
      .mobile-toggle{display:block}
      .main-nav{display:none;position:absolute;left:16px;right:16px;top:76px;padding:10px;background:rgba(12,18,36,.98);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}
      .main-nav a{padding:12px 14px}
      .nav-action .nav-download{display:none}
      .hero{padding:60px 0 70px}
      .hero-grid,.comparison,.faq-layout{grid-template-columns:1fr}
      .hero h1{font-size:47px}
      .section{padding:72px 0}
      .fit-grid{grid-template-columns:1fr}
      .cta-box{align-items:flex-start;flex-direction:column;padding:32px}
      .footer-top{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
      .footer-col:last-child{grid-column:auto}
    }
    @media(max-width:520px){
      .hero h1{font-size:39px}
      .hero-copy p{font-size:16px}
      .plan-grid,.assurance-grid{grid-template-columns:1fr}
      .compare-panel,.signal-panel{padding:21px}
      .compare-row{grid-template-columns:1.3fr .75fr .75fr .75fr;font-size:11px;gap:6px}
      .board-meta{grid-template-columns:1fr}
      .footer-top{grid-template-columns:1fr}
      .footer-brand,.footer-col:last-child{grid-column:auto}
      .footer-bottom{flex-direction:column;gap:6px}
      .marquee-track{justify-content:flex-start;gap:25px}
    }

/* roulang page: category4 */
:root {
      --bg: #070b17;
      --bg-soft: #0c1224;
      --panel: #10182d;
      --panel-light: #141f38;
      --line: rgba(153,177,224,.16);
      --line-strong: rgba(153,177,224,.28);
      --text: #f4f7ff;
      --muted: #aab8d2;
      --faint: #7483a1;
      --primary: #6475ff;
      --primary-deep: #4356df;
      --cyan: #4dd8f4;
      --green: #4ce0a1;
      --orange: #ffb86b;
      --radius-lg: 28px;
      --radius-md: 18px;
      --radius-sm: 12px;
      --shadow: 0 24px 80px rgba(0,0,0,.28);
      --shadow-soft: 0 14px 36px rgba(0,0,0,.18);
      --container: 1180px;
    }

    html { scroll-behavior: smooth; }
    * { box-sizing: border-box; }
    body {
      margin: 0;
      color: var(--text);
      background:
        radial-gradient(circle at 10% 0%, rgba(73,88,220,.18), transparent 32rem),
        radial-gradient(circle at 92% 18%, rgba(54,180,219,.08), transparent 28rem),
        var(--bg);
      font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size: 16px;
      line-height: 1.75;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; transition: .25s ease; }
    a:hover { color: var(--cyan); }
    img { display: block; max-width: 100%; }
    button, input { font: inherit; }
    button:focus-visible, a:focus-visible, input:focus-visible {
      outline: 3px solid rgba(77,216,244,.7);
      outline-offset: 4px;
    }
    .container {
      width: min(var(--container), calc(100% - 48px));
      margin: 0 auto;
    }
    .section {
      padding: 100px 0;
      position: relative;
    }
    .section-dark {
      background: rgba(255,255,255,.018);
      border-top: 1px solid rgba(255,255,255,.035);
      border-bottom: 1px solid rgba(255,255,255,.035);
    }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--cyan);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: .14em;
      margin-bottom: 15px;
    }
    .eyebrow::before {
      content: "";
      width: 24px;
      height: 1px;
      background: var(--cyan);
    }
    h1, h2, h3, p { margin-top: 0; }
    h1, h2, h3 { color: var(--text); line-height: 1.25; letter-spacing: -.035em; }
    h1 { font-size: clamp(40px, 5vw, 68px); margin-bottom: 22px; }
    h2 { font-size: clamp(30px, 3.5vw, 46px); margin-bottom: 17px; }
    h3 { font-size: 20px; margin-bottom: 10px; }
    .text-gradient {
      background: linear-gradient(100deg,#fff 10%,#91a2ff 56%,#4dd8f4 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .section-heading {
      max-width: 730px;
      margin-bottom: 44px;
    }
    .section-heading p {
      color: var(--muted);
      font-size: 17px;
      max-width: 700px;
      margin-bottom: 0;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(7,11,23,.8);
      border-bottom: 1px solid rgba(255,255,255,.08);
      backdrop-filter: blur(18px);
    }
    .nav-wrap {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -.03em;
      white-space: nowrap;
    }
    .brand:hover { color: #fff; }
    .brand-mark {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 11px;
      color: #fff;
      background: linear-gradient(135deg,var(--primary),var(--cyan));
      box-shadow: 0 8px 24px rgba(76,110,255,.34);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .main-nav a {
      padding: 9px 15px;
      border-radius: 10px;
      color: var(--muted);
      font-size: 14px;
      font-weight: 600;
    }
    .main-nav a:hover,
    .main-nav a.active {
      color: #fff;
      background: rgba(100,117,255,.13);
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .nav-download {
      padding: 10px 17px !important;
      color: #fff !important;
      background: var(--primary);
      box-shadow: 0 8px 20px rgba(100,117,255,.24);
    }
    .nav-download:hover {
      color: #fff !important;
      background: #7a88ff !important;
      transform: translateY(-2px);
    }
    .mobile-toggle {
      display: none;
      border: 1px solid var(--line);
      color: #fff;
      background: var(--panel);
      border-radius: 10px;
      padding: 9px 12px;
      cursor: pointer;
    }

    .page-hero {
      padding: 86px 0 78px;
      overflow: hidden;
    }
    .page-hero-grid {
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      gap: 72px;
      align-items: center;
    }
    .hero-copy p {
      max-width: 700px;
      color: var(--muted);
      font-size: 18px;
      margin-bottom: 28px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 13px;
    }
    .button {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      margin: 0;
      padding: 13px 21px;
      border: 1px solid transparent;
      border-radius: 12px;
      font-weight: 700;
      transition: .25s ease;
    }
    .button.primary {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 12px 28px rgba(100,117,255,.27);
    }
    .button.primary:hover {
      color: #fff;
      background: #7b8aff;
      transform: translateY(-3px);
    }
    .button.ghost {
      color: #e5eaff;
      border-color: var(--line-strong);
      background: rgba(255,255,255,.035);
    }
    .button.ghost:hover {
      color: #fff;
      border-color: rgba(100,117,255,.55);
      background: rgba(100,117,255,.12);
      transform: translateY(-3px);
    }
    .hero-notes {
      display: flex;
      flex-wrap: wrap;
      gap: 22px;
      margin-top: 27px;
    }
    .hero-note {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--faint);
      font-size: 13px;
    }
    .hero-note i { color: var(--green); }

    .signal-board {
      position: relative;
      padding: 28px;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(145deg,rgba(100,117,255,.17),transparent 50%),
        var(--panel);
      box-shadow: var(--shadow);
    }
    .signal-board::after {
      content: "";
      position: absolute;
      width: 180px;
      height: 180px;
      right: -70px;
      top: -70px;
      border-radius: 50%;
      background: rgba(77,216,244,.12);
      filter: blur(7px);
    }
    .board-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding-bottom: 20px;
      border-bottom: 1px solid var(--line);
    }
    .board-title {
      color: var(--muted);
      font-size: 13px;
    }
    .live-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 6px 10px;
      border-radius: 999px;
      color: var(--green);
      background: rgba(76,224,161,.1);
      font-size: 12px;
    }
    .live-badge::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 5px rgba(76,224,161,.1);
    }
    .route-map {
      position: relative;
      min-height: 205px;
      margin: 24px 0 20px;
      padding: 16px;
      border: 1px solid rgba(153,177,224,.12);
      border-radius: 20px;
      background: rgba(6,11,27,.55);
    }
    .route-line {
      position: absolute;
      left: 14%;
      right: 14%;
      top: 50%;
      height: 2px;
      background: linear-gradient(90deg,var(--primary),var(--cyan));
      box-shadow: 0 0 22px rgba(77,216,244,.55);
      transform: rotate(-9deg);
    }
    .route-line::before,
    .route-line::after {
      content: "";
      position: absolute;
      top: -4px;
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--cyan);
      box-shadow: 0 0 0 7px rgba(77,216,244,.1);
    }
    .route-line::before { left: 0; }
    .route-line::after { right: 0; }
    .route-node {
      position: absolute;
      display: grid;
      place-items: center;
      width: 54px;
      height: 54px;
      border: 1px solid rgba(153,177,224,.28);
      border-radius: 16px;
      color: #fff;
      background: var(--panel-light);
      box-shadow: 0 12px 24px rgba(0,0,0,.2);
    }
    .route-node i { color: var(--cyan); }
    .route-node.source { left: 8%; top: 29%; }
    .route-node.mid { left: 44%; top: 46%; }
    .route-node.target { right: 8%; top: 16%; }
    .route-label {
      position: absolute;
      color: var(--faint);
      font-size: 11px;
    }
    .route-label.source-label { left: 6%; bottom: 17px; }
    .route-label.mid-label { left: 39%; bottom: 17px; }
    .route-label.target-label { right: 5%; bottom: 17px; }
    .board-meta {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 12px;
    }
    .board-meta span {
      display: block;
      margin-bottom: 3px;
      color: var(--faint);
      font-size: 11px;
    }
    .board-meta strong { font-size: 15px; }

    .flash-strip {
      padding: 18px 0;
      border-top: 1px solid rgba(255,255,255,.06);
      border-bottom: 1px solid rgba(255,255,255,.06);
      background: rgba(100,117,255,.08);
    }
    .flash-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .flash-title {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-weight: 700;
    }
    .flash-title i { color: var(--orange); }
    .flash-time {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--muted);
      font-size: 13px;
    }
    .time-box {
      min-width: 35px;
      padding: 5px 7px;
      border: 1px solid var(--line);
      border-radius: 8px;
      color: #fff;
      background: rgba(0,0,0,.18);
      text-align: center;
      font-weight: 700;
    }

    .article-layout {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 22px;
    }
    .feature-article,
    .article-card,
    .topic-card,
    .metric-card,
    .support-card,
    .faq-item,
    .cta-panel {
      border: 1px solid var(--line);
      background: var(--panel);
      box-shadow: var(--shadow-soft);
    }
    .feature-article {
      min-height: 360px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 34px;
      overflow: hidden;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(180deg,rgba(10,18,40,.08),rgba(7,11,23,.92)),
        radial-gradient(circle at 72% 20%,rgba(77,216,244,.2),transparent 20rem),
        linear-gradient(135deg,#1a2654,#10182d 56%,#0b1225);
    }
    .feature-article .article-tag { align-self: flex-start; }
    .article-tag {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      width: fit-content;
      margin-bottom: 15px;
      padding: 6px 10px;
      border-radius: 999px;
      color: var(--cyan);
      background: rgba(77,216,244,.1);
      font-size: 12px;
      font-weight: 700;
    }
    .feature-article h3 {
      max-width: 650px;
      font-size: 29px;
      margin-bottom: 10px;
    }
    .feature-article p {
      max-width: 660px;
      color: var(--muted);
      margin-bottom: 0;
    }
    .article-side {
      display: grid;
      gap: 22px;
    }
    .article-card {
      padding: 25px;
      border-radius: var(--radius-md);
      transition: .25s ease;
    }
    .article-card:hover,
    .topic-card:hover,
    .support-card:hover {
      border-color: rgba(100,117,255,.5);
      transform: translateY(-5px);
      box-shadow: 0 20px 40px rgba(0,0,0,.24);
    }
    .article-card h3 { font-size: 19px; }
    .article-card p,
    .topic-card p,
    .support-card p {
      color: var(--muted);
      font-size: 14px;
      margin-bottom: 14px;
    }
    .article-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      color: var(--faint);
      font-size: 12px;
    }
    .article-meta i { color: var(--cyan); }

    .topic-grid {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 16px;
    }
    .topic-card {
      min-height: 205px;
      padding: 24px;
      border-radius: var(--radius-md);
      transition: .25s ease;
    }
    .topic-icon {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      margin-bottom: 21px;
      border-radius: 14px;
      color: var(--cyan);
      background: rgba(77,216,244,.1);
      font-size: 18px;
    }
    .topic-card:nth-child(2) .topic-icon { color: var(--green); background: rgba(76,224,161,.1); }
    .topic-card:nth-child(3) .topic-icon { color: var(--orange); background: rgba(255,184,107,.1); }
    .topic-card:nth-child(4) .topic-icon { color: #a99cff; background: rgba(169,156,255,.1); }
    .topic-card h3 { font-size: 18px; }

    .content-split {
      display: grid;
      grid-template-columns: .78fr 1.22fr;
      gap: 70px;
      align-items: start;
    }
    .content-split .section-heading { margin-bottom: 0; }
    .insight-list {
      display: grid;
      gap: 13px;
    }
    .insight-item {
      display: grid;
      grid-template-columns: 45px 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 18px 20px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: rgba(16,24,45,.7);
      transition: .25s ease;
    }
    .insight-item:hover {
      background: var(--panel-light);
      border-color: rgba(100,117,255,.45);
      transform: translateX(4px);
    }
    .insight-index {
      color: var(--primary);
      font-size: 13px;
      font-weight: 800;
    }
    .insight-item h3 {
      margin-bottom: 3px;
      font-size: 16px;
      letter-spacing: -.01em;
    }
    .insight-item p {
      margin: 0;
      color: var(--faint);
      font-size: 13px;
    }
    .insight-item > i { color: var(--faint); }

    .metrics {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 16px;
    }
    .metric-card {
      padding: 26px;
      border-radius: var(--radius-md);
    }
    .metric-card strong {
      display: block;
      margin-bottom: 4px;
      color: #fff;
      font-size: 34px;
      letter-spacing: -.05em;
    }
    .metric-card span {
      display: block;
      color: var(--muted);
      font-size: 13px;
    }
    .metric-card small {
      display: block;
      margin-top: 13px;
      color: var(--green);
      font-size: 12px;
    }

    .support-grid {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 18px;
    }
    .support-card {
      padding: 27px;
      border-radius: var(--radius-md);
      transition: .25s ease;
    }
    .support-card .support-icon {
      margin-bottom: 20px;
      color: var(--primary);
      font-size: 25px;
    }
    .support-card h3 { font-size: 19px; }

    .faq-list {
      display: grid;
      grid-template-columns: repeat(2,1fr);
      gap: 14px;
    }
    .faq-item {
      padding: 22px 24px;
      border-radius: var(--radius-md);
    }
    .faq-item summary {
      position: relative;
      padding-right: 28px;
      color: #fff;
      cursor: pointer;
      font-weight: 700;
      list-style: none;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after {
      content: "\2b";
      position: absolute;
      right: 0;
      top: 0;
      color: var(--cyan);
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
    }
    .faq-item[open] summary::after { content: "\f068"; }
    .faq-item p {
      margin: 14px 0 0;
      padding-top: 14px;
      border-top: 1px solid var(--line);
      color: var(--muted);
      font-size: 14px;
    }

    .cta-panel {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      padding: 38px 42px;
      overflow: hidden;
      border-radius: var(--radius-lg);
      background:
        radial-gradient(circle at 85% 20%,rgba(77,216,244,.18),transparent 19rem),
        linear-gradient(135deg,rgba(100,117,255,.22),rgba(16,24,45,.92));
    }
    .cta-panel h2 {
      margin-bottom: 10px;
      font-size: 32px;
    }
    .cta-panel p {
      max-width: 670px;
      margin-bottom: 0;
      color: var(--muted);
    }

    footer {
      padding: 68px 0 25px;
      border-top: 1px solid rgba(255,255,255,.07);
      background: rgba(4,7,16,.6);
    }
    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 38px;
      padding-bottom: 48px;
    }
    .footer-brand p {
      max-width: 330px;
      margin: 18px 0 0;
      color: var(--muted);
      font-size: 14px;
    }
    .footer-col {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 9px;
    }
    .footer-col h3 {
      margin-bottom: 8px;
      color: #fff;
      font-size: 14px;
    }
    .footer-col a {
      color: var(--faint);
      font-size: 13px;
    }
    .footer-col a:hover { color: var(--cyan); }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding-top: 22px;
      border-top: 1px solid var(--line);
      color: var(--faint);
      font-size: 12px;
    }

    @media (max-width: 1024px) {
      .page-hero-grid,
      .content-split { gap: 40px; }
      .topic-grid { grid-template-columns: repeat(2,1fr); }
      .metrics { grid-template-columns: repeat(2,1fr); }
      .footer-top { grid-template-columns: 1.4fr 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .container { width: min(var(--container), calc(100% - 34px)); }
      .section { padding: 76px 0; }
      .nav-wrap { min-height: 68px; }
      .mobile-toggle { display: inline-block; }
      .nav-action .nav-download { display: none; }
      .main-nav {
        position: absolute;
        left: 17px;
        right: 17px;
        top: 76px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 5px;
        padding: 10px;
        border: 1px solid var(--line);
        border-radius: 16px;
        background: rgba(12,18,36,.97);
        box-shadow: var(--shadow-soft);
      }
      .main-nav.is-open { display: flex; }
      .main-nav a { padding: 12px 14px; }
      .page-hero { padding: 65px 0 62px; }
      .page-hero-grid,
      .article-layout,
      .content-split { grid-template-columns: 1fr; }
      .hero-copy p { font-size: 16px; }
      .flash-inner { align-items: flex-start; flex-direction: column; gap: 12px; }
      .article-side { grid-template-columns: repeat(2,1fr); }
      .support-grid { grid-template-columns: 1fr; }
      .faq-list { grid-template-columns: 1fr; }
      .cta-panel { align-items: flex-start; flex-direction: column; padding: 32px 26px; }
      .footer-top { grid-template-columns: 1.5fr 1fr 1fr; }
    }
    @media (max-width: 520px) {
      h1 { font-size: 41px; }
      h2 { font-size: 31px; }
      .hero-actions,
      .hero-actions .button { width: 100%; }
      .hero-actions .button { justify-content: center; }
      .signal-board { padding: 21px; }
      .route-map { min-height: 184px; }
      .board-meta { gap: 8px; }
      .board-meta strong { font-size: 13px; }
      .article-side,
      .topic-grid,
      .metrics { grid-template-columns: 1fr; }
      .feature-article { min-height: 390px; padding: 25px; }
      .feature-article h3 { font-size: 24px; }
      .insight-item { grid-template-columns: 32px 1fr 15px; gap: 10px; padding: 16px; }
      .footer-top { grid-template-columns: 1fr 1fr; gap: 30px 18px; }
      .footer-brand { grid-column: 1 / -1; }
      .footer-bottom { align-items: flex-start; flex-direction: column; gap: 7px; }
    }