/* roulang page: index */
:root{
      --bg:#050816;
      --bg-2:#07142a;
      --bg-3:#0b1f3a;
      --text:#f8fafc;
      --muted:#cbd5e1;
      --soft:#94a3b8;
      --line:rgba(148,163,184,.18);
      --line-strong:rgba(125,211,252,.32);
      --cyan:#38bdf8;
      --cyan-2:#22d3ee;
      --indigo:#6366f1;
      --violet:#8b5cf6;
      --purple:#a78bfa;
      --glass:rgba(15,23,42,.58);
      --glass-dark:rgba(8,13,28,.74);
      --radius-sm:16px;
      --radius-md:22px;
      --radius-lg:32px;
      --shadow:0 24px 80px rgba(2,8,23,.45);
      --glow:0 0 34px rgba(56,189,248,.24),0 0 70px rgba(139,92,246,.18);
      --container:1220px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(56,189,248,.22), transparent 30%),
        radial-gradient(circle at 78% 2%, rgba(139,92,246,.24), transparent 34%),
        radial-gradient(circle at 52% 80%, rgba(34,211,238,.12), transparent 28%),
        linear-gradient(135deg,var(--bg),var(--bg-2) 46%,#020617);
      line-height:1.75;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(148,163,184,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148,163,184,.08) 1px, transparent 1px);
      background-size:48px 48px;
      mask-image:linear-gradient(to bottom, rgba(0,0,0,.7), transparent 80%);
      z-index:-2;
    }
    body:after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.11;
      background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(/%23n)' opacity='.55'/%3E%3C/svg%3E");
      z-index:-1;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    ::selection{background:rgba(56,189,248,.35);color:#fff}
    :focus-visible{outline:3px solid rgba(34,211,238,.55);outline-offset:3px;border-radius:14px}

    .site-container{width:min(100% - 40px,var(--container));margin-inline:auto}
    .section{padding:96px 0}
    .section-tight{padding:70px 0}
    .glass{
      background:linear-gradient(135deg,rgba(15,23,42,.72),rgba(8,13,28,.54));
      border:1px solid var(--line);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      box-shadow:var(--shadow);
    }
    .glass-hover{
      transition:border-color .24s ease, transform .24s ease, box-shadow .24s ease, background .24s ease;
    }
    .glass-hover:hover{
      transform:translateY(-3px);
      border-color:var(--line-strong);
      box-shadow:var(--shadow),var(--glow);
      background:linear-gradient(135deg,rgba(15,23,42,.82),rgba(8,13,28,.64));
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:#dff7ff;
      background:rgba(56,189,248,.11);
      border:1px solid rgba(125,211,252,.22);
      font-size:13px;
      line-height:1;
      white-space:nowrap;
    }
    .badge:before{
      content:"";
      width:7px;height:7px;border-radius:999px;
      background:var(--cyan-2);
      box-shadow:0 0 14px rgba(34,211,238,.9);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:13px 22px;
      border-radius:999px;
      font-weight:750;
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
      user-select:none;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--cyan),var(--indigo) 48%,var(--violet));
      box-shadow:0 18px 42px rgba(99,102,241,.34),0 0 28px rgba(56,189,248,.22);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 56px rgba(99,102,241,.42),0 0 44px rgba(56,189,248,.34)}
    .btn-primary:active,.btn-secondary:active{transform:translateY(1px) scale(.99)}
    .btn-secondary{
      background:rgba(15,23,42,.48);
      border:1px solid rgba(125,211,252,.22);
      color:#e2e8f0;
    }
    .btn-secondary:hover{background:rgba(56,189,248,.1);border-color:rgba(125,211,252,.42);box-shadow:0 0 30px rgba(56,189,248,.16)}
    .section-kicker{margin-bottom:14px}
    .section-title{
      font-size:clamp(28px,4vw,46px);
      line-height:1.12;
      font-weight:900;
      letter-spacing:-.04em;
    }
    .section-copy{
      margin-top:16px;
      max-width:760px;
      color:var(--muted);
      font-size:16px;
    }
    .gradient-text{
      background:linear-gradient(135deg,#e0f2fe,#7dd3fc 35%,#a78bfa 76%,#fff);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      border-bottom:1px solid rgba(148,163,184,.14);
      background:rgba(2,6,23,.62);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      transition:background .25s ease, box-shadow .25s ease;
    }
    .site-header.is-scrolled{background:rgba(2,6,23,.86);box-shadow:0 18px 50px rgba(2,6,23,.42)}
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .logo{
      display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:-.02em;
    }
    .logo-mark{
      width:42px;height:42px;border-radius:16px;
      display:grid;place-items:center;
      background:radial-gradient(circle at 28% 24%,#67e8f9,transparent 28%),linear-gradient(135deg,var(--indigo),var(--violet));
      box-shadow:0 0 34px rgba(99,102,241,.4);
      position:relative;
    }
    .logo-mark:after{
      content:"";
      width:0;height:0;border-top:8px solid transparent;border-bottom:8px solid transparent;border-left:13px solid #fff;margin-left:3px;
      filter:drop-shadow(0 0 8px rgba(255,255,255,.55));
    }
    .logo-text{font-size:19px}
    .desktop-nav{display:flex;align-items:center;gap:8px}
    .nav-link{
      padding:10px 14px;border-radius:999px;color:#cbd5e1;font-size:14px;font-weight:700;
      transition:background .2s ease,color .2s ease;
    }
    .nav-link:hover,.nav-link.active{color:#fff;background:rgba(56,189,248,.1)}
    .nav-actions{display:flex;align-items:center;gap:12px}
    .location-pill{
      display:flex;align-items:center;gap:8px;min-height:42px;padding:9px 13px;border-radius:999px;
      color:#dbeafe;background:rgba(15,23,42,.58);border:1px solid rgba(125,211,252,.2);
      font-size:13px;font-weight:700;
    }
    .location-dot{width:9px;height:9px;border-radius:50%;background:#22d3ee;box-shadow:0 0 15px rgba(34,211,238,.9)}
    .hamburger{display:none;width:44px;height:44px;border-radius:999px;background:rgba(15,23,42,.6);border:1px solid var(--line);color:#fff}
    .mobile-panel{
      display:none;
      border-top:1px solid rgba(148,163,184,.14);
      padding:16px 0 22px;
    }
    .mobile-panel.open{display:block}
    .mobile-panel .nav-link{display:block;margin:8px 0}
    .mobile-panel .location-pill{width:100%;justify-content:center;margin:10px 0 14px}

    .hero{
      padding:42px 0 84px;
      position:relative;
    }
    .hero-banner{
      min-height:560px;
      border-radius:36px;
      overflow:hidden;
      position:relative;
      background:
        linear-gradient(115deg,rgba(2,6,23,.88),rgba(7,20,42,.72) 48%,rgba(99,102,241,.2)),
        radial-gradient(circle at 86% 26%,rgba(56,189,248,.32),transparent 34%),
        linear-gradient(135deg,#081426,#0b1f3a);
      border:1px solid rgba(125,211,252,.2);
      box-shadow:var(--shadow),0 0 80px rgba(56,189,248,.1);
    }
    .hero-banner:before{
      content:"";
      position:absolute;inset:0;
      background:
        linear-gradient(90deg, transparent, rgba(125,211,252,.1), transparent),
        repeating-linear-gradient(115deg, rgba(255,255,255,.04) 0 1px, transparent 1px 18px);
      opacity:.55;
    }
    .creator-head{
      position:relative;
      z-index:1;
      min-height:560px;
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:28px;
      align-items:end;
      padding:38px;
    }
    .profile-card{
      border-radius:32px;
      padding:30px;
      background:rgba(8,13,28,.62);
      border:1px solid rgba(125,211,252,.2);
      backdrop-filter:blur(18px);
    }
    .avatar-row{display:flex;align-items:center;gap:18px;margin-bottom:24px}
    .avatar{
      width:86px;height:86px;border-radius:30px;
      background:linear-gradient(135deg,#38bdf8,#6366f1 55%,#8b5cf6);
      box-shadow:0 0 44px rgba(56,189,248,.32);
      display:grid;place-items:center;
      font-size:34px;font-weight:900;
    }
    .hero h1{
      margin:0;
      font-size:clamp(38px,6vw,68px);
      line-height:1.06;
      font-weight:950;
      letter-spacing:-.06em;
    }
    .hero-desc{
      margin-top:18px;
      color:#dbeafe;
      font-size:17px;
      max-width:760px;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
    .data-badges{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .data-badge{
      padding:14px;border-radius:18px;background:rgba(15,23,42,.55);border:1px solid rgba(148,163,184,.18);
    }
    .data-badge strong{display:block;font-size:22px;line-height:1.1;color:#fff}
    .data-badge span{font-size:12px;color:var(--soft)}
    .digest-panel{
      align-self:stretch;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      border-radius:32px;
      padding:24px;
      background:linear-gradient(180deg,rgba(15,23,42,.68),rgba(2,6,23,.46));
      border:1px solid rgba(125,211,252,.18);
      backdrop-filter:blur(18px);
    }
    .digest-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px}
    .digest-list{display:grid;gap:12px}
    .digest-item{
      display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:18px;
      background:rgba(2,6,23,.42);border:1px solid rgba(148,163,184,.14);
    }
    .digest-icon{width:30px;height:30px;border-radius:12px;display:grid;place-items:center;background:rgba(56,189,248,.12);color:#7dd3fc;flex:0 0 auto}
    .digest-item h3{font-size:15px;margin:0 0 4px;font-weight:800}
    .digest-item p{margin:0;color:var(--soft);font-size:13px;line-height:1.6}
    .follow-box{
      margin-top:20px;
      padding:16px;border-radius:22px;
      background:linear-gradient(135deg,rgba(56,189,248,.13),rgba(139,92,246,.1));
      border:1px solid rgba(125,211,252,.2);
      display:flex;align-items:center;justify-content:space-between;gap:14px;
    }

    .kpi-layout{display:grid;grid-template-columns:.86fr 1.14fr;gap:24px;align-items:start}
    .pain-stack{display:grid;gap:14px}
    .pain-item{border-radius:24px;padding:20px}
    .pain-item h3{font-size:20px;font-weight:850;margin:0 0 8px}
    .pain-item p{margin:0;color:var(--muted);font-size:15px}
    .kpi-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .kpi-card{border-radius:26px;padding:24px;min-height:154px}
    .kpi-card .num{font-size:42px;font-weight:950;line-height:1;margin-bottom:10px}
    .kpi-card p{color:var(--muted);margin:0}
    .wide-note{grid-column:1/-1;border-radius:26px;padding:22px;display:flex;align-items:center;justify-content:space-between;gap:18px}

    .news-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;margin-top:32px}
    .news-list{display:grid;gap:14px}
    .news-card{
      border-radius:24px;padding:20px;display:grid;gap:10px;
    }
    .news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:var(--soft);font-size:13px}
    .news-card h3{font-size:21px;line-height:1.35;margin:0;font-weight:850}
    .news-card p{margin:0;color:var(--muted);font-size:15px}
    .news-link{display:inline-flex;align-items:center;gap:8px;color:#7dd3fc;font-weight:800;font-size:14px}
    .news-link span{transition:transform .2s ease}
    .news-card:hover .news-link span{transform:translateX(4px)}
    .side-recommend{border-radius:30px;padding:24px;position:sticky;top:100px}
    .side-recommend ul{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:12px}
    .side-recommend li{padding:13px 0;border-bottom:1px solid rgba(148,163,184,.13);color:var(--muted)}
    .empty-state{border-radius:26px;padding:26px;text-align:center;color:var(--muted)}

    .service-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;margin-top:32px}
    .process-card{border-radius:30px;padding:28px}
    .process{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:18px;position:relative}
    .process li{display:grid;grid-template-columns:36px 1fr;gap:14px;align-items:start}
    .process-dot{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:rgba(56,189,248,.14);border:1px solid rgba(125,211,252,.25);box-shadow:0 0 26px rgba(56,189,248,.15);font-weight:900;color:#e0f2fe}
    .process h3{margin:0 0 5px;font-size:18px;font-weight:850}
    .process p{margin:0;color:var(--muted);font-size:15px}
    .matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .matrix-card{border-radius:24px;padding:20px;min-height:170px}
    .matrix-card .icon{width:42px;height:42px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(56,189,248,.18),rgba(139,92,246,.18));margin-bottom:16px}
    .matrix-card h3{font-size:19px;margin:0 0 8px;font-weight:850}
    .matrix-card p{margin:0;color:var(--muted);font-size:15px}

    .app-stage{border-radius:36px;padding:28px;margin-top:32px;display:grid;grid-template-columns:1fr .92fr;gap:22px;align-items:center}
    .app-panel{
      min-height:360px;border-radius:30px;padding:22px;
      background:
        radial-gradient(circle at 70% 10%,rgba(56,189,248,.22),transparent 32%),
        rgba(2,6,23,.45);
      border:1px solid rgba(125,211,252,.18);
      display:grid;
      align-content:center;
      gap:14px;
    }
    .app-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px;border-radius:18px;background:rgba(15,23,42,.6);border:1px solid rgba(148,163,184,.14)}
    .app-row b{font-size:16px}
    .app-row span{color:var(--soft);font-size:13px}
    .social-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:30px}
    .social-card{border-radius:24px;padding:22px;text-align:center}
    .social-card strong{display:block;font-size:28px;font-weight:950}
    .social-card span{color:var(--soft);font-size:13px}

    .testimonial-track{display:grid;grid-template-columns:1.05fr .95fr;gap:18px;margin-top:32px}
    .quote-card{border-radius:28px;padding:24px}
    .quote-card p{font-size:16px;color:#dbeafe;margin:0 0 18px}
    .quote-card footer{display:flex;align-items:center;justify-content:space-between;color:var(--soft);font-size:13px}
    .stars{color:#67e8f9;letter-spacing:2px}

    .faq-wrap{max-width:920px;margin:32px auto 0;display:grid;gap:12px}
    .faq-item{border-radius:22px;overflow:hidden}
    .faq-q{
      width:100%;
      min-height:62px;
      padding:18px 20px;
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      background:transparent;color:#fff;text-align:left;font-weight:850;
    }
    .faq-q .plus{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:rgba(56,189,248,.12);color:#7dd3fc;flex:0 0 auto;transition:transform .2s ease}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
    .faq-a p{margin:0;padding:0 20px 20px;color:var(--muted);font-size:15px}
    .faq-item.open .faq-a{max-height:220px}
    .faq-item.open .plus{transform:rotate(45deg)}

    .final-cta{padding:72px 0 100px}
    .cta-panel{
      border-radius:38px;
      padding:42px;
      position:relative;
      overflow:hidden;
      display:grid;
      grid-template-columns:1fr auto;
      gap:24px;
      align-items:center;
    }
    .cta-panel:before{
      content:"";
      position:absolute;width:340px;height:340px;border-radius:50%;right:-120px;top:-150px;
      background:radial-gradient(circle,rgba(56,189,248,.32),transparent 66%);
      pointer-events:none;
    }
    .cta-panel>*{position:relative;z-index:1}

    .site-footer{
      border-top:1px solid rgba(148,163,184,.14);
      background:rgba(2,6,23,.72);
      padding:42px 0 26px;
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:28px}
    .footer-title{font-weight:900;font-size:18px;margin-bottom:12px}
    .footer-copy{color:var(--soft);font-size:14px;margin:14px 0 0;max-width:430px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:var(--muted);font-size:14px;transition:color .2s ease,transform .2s ease}
    .footer-links a:hover{color:#7dd3fc;transform:translateX(3px)}
    .copyright{margin-top:32px;padding-top:20px;border-top:1px solid rgba(148,163,184,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--soft);font-size:13px}

    @media (max-width:1024px){
      .desktop-nav,.nav-actions .btn-primary{display:none}
      .hamburger{display:grid;place-items:center}
      .creator-head,.kpi-layout,.news-layout,.service-wrap,.app-stage,.testimonial-track,.cta-panel{grid-template-columns:1fr}
      .digest-panel{min-height:unset}
      .side-recommend{position:relative;top:auto}
      .social-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .site-container{width:min(100% - 32px,var(--container))}
      .section{padding:72px 0}
      .hero{padding-top:24px}
      .hero-banner{border-radius:28px;min-height:auto}
      .creator-head{padding:22px;min-height:auto}
      .profile-card,.digest-panel{border-radius:26px;padding:20px}
      .avatar{width:70px;height:70px;border-radius:24px;font-size:28px}
      .data-badges,.kpi-grid,.matrix{grid-template-columns:1fr}
      .wide-note{display:block}
      .hero-actions .btn,.cta-panel .btn{width:100%}
      .app-stage,.cta-panel{padding:22px;border-radius:28px}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .nav-wrap{height:68px}
      .logo-text{font-size:17px}
      .location-pill{font-size:12px;padding-inline:10px}
      .hero h1{font-size:36px}
      .section-title{font-size:30px}
      .follow-box{display:grid}
      .news-card h3{font-size:18px}
      .social-grid{grid-template-columns:1fr}
    }

/* roulang page: article */
:root{
      --bg:#050816;
      --bg-2:#07142a;
      --bg-3:#0b1f3a;
      --text:#f8fafc;
      --muted:#cbd5e1;
      --soft:#94a3b8;
      --line:rgba(148,163,184,.18);
      --line-strong:rgba(125,211,252,.32);
      --cyan:#38bdf8;
      --cyan-2:#22d3ee;
      --indigo:#6366f1;
      --violet:#8b5cf6;
      --purple:#a78bfa;
      --glass:rgba(15,23,42,.58);
      --glass-dark:rgba(8,13,28,.74);
      --radius-sm:16px;
      --radius-md:22px;
      --radius-lg:32px;
      --shadow:0 24px 80px rgba(2,8,23,.45);
      --glow:0 0 34px rgba(56,189,248,.24),0 0 70px rgba(139,92,246,.18);
      --container:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(56,189,248,.22), transparent 30%),
        radial-gradient(circle at 78% 2%, rgba(139,92,246,.24), transparent 34%),
        radial-gradient(circle at 52% 80%, rgba(34,211,238,.12), transparent 28%),
        linear-gradient(135deg,var(--bg),var(--bg-2) 46%,#020617);
      line-height:1.75;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(148,163,184,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148,163,184,.08) 1px, transparent 1px);
      background-size:48px 48px;
      mask-image:linear-gradient(to bottom, rgba(0,0,0,.7), transparent 80%);
      z-index:-2;
    }
    body:after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.11;
      background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(/%23n)' opacity='.55'/%3E%3C/svg%3E");
      z-index:-1;
    }
    ::selection{background:rgba(56,189,248,.35);color:#fff}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    a:focus-visible,button:focus-visible{
      outline:3px solid rgba(34,211,238,.55);
      outline-offset:4px;
    }
    .site-container{width:min(100% - 40px,var(--container));margin-inline:auto}
    .section{padding:96px 0}
    .section-tight{padding:70px 0}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:#dff7ff;
      background:rgba(56,189,248,.11);
      border:1px solid rgba(125,211,252,.22);
      font-size:13px;
      line-height:1;
      white-space:nowrap;
    }
    .badge:before{
      content:"";
      width:7px;height:7px;border-radius:999px;
      background:var(--cyan-2);
      box-shadow:0 0 14px rgba(34,211,238,.9);
      flex:0 0 auto;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:13px 22px;
      border-radius:999px;
      font-weight:750;
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
      user-select:none;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--cyan),var(--indigo) 48%,var(--violet));
      box-shadow:0 18px 42px rgba(99,102,241,.34),0 0 28px rgba(56,189,248,.22);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 56px rgba(99,102,241,.42),0 0 44px rgba(56,189,248,.34)}
    .btn-primary:active,.btn-secondary:active{transform:translateY(1px) scale(.99)}
    .btn-secondary{
      background:rgba(15,23,42,.48);
      border:1px solid rgba(125,211,252,.22);
      color:#e2e8f0;
    }
    .btn-secondary:hover{background:rgba(56,189,248,.1);border-color:rgba(125,211,252,.42);box-shadow:0 0 30px rgba(56,189,248,.16)}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      border-bottom:1px solid rgba(148,163,184,.14);
      background:rgba(2,6,23,.62);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      transition:background .25s ease, box-shadow .25s ease;
    }
    .site-header.is-scrolled{background:rgba(2,6,23,.86);box-shadow:0 18px 50px rgba(2,6,23,.42)}
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .logo{display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:-.02em}
    .logo-mark{
      width:42px;height:42px;border-radius:16px;
      display:grid;place-items:center;
      background:radial-gradient(circle at 28% 24%,#67e8f9,transparent 28%),linear-gradient(135deg,var(--indigo),var(--violet));
      box-shadow:0 0 34px rgba(99,102,241,.4);
      position:relative;
      flex:0 0 auto;
    }
    .logo-mark:after{
      content:"";
      width:0;height:0;border-top:8px solid transparent;border-bottom:8px solid transparent;border-left:13px solid #fff;margin-left:3px;
      filter:drop-shadow(0 0 8px rgba(255,255,255,.55));
    }
    .logo-text{font-size:19px}
    .desktop-nav{display:flex;align-items:center;gap:8px}
    .nav-link{
      padding:10px 14px;border-radius:999px;color:#cbd5e1;font-size:14px;font-weight:700;
      transition:background .2s ease,color .2s ease;
    }
    .nav-link:hover,.nav-link.active{color:#fff;background:rgba(56,189,248,.1)}
    .nav-actions{display:flex;align-items:center;gap:12px}
    .location-pill{
      display:flex;align-items:center;gap:8px;min-height:42px;padding:9px 13px;border-radius:999px;
      color:#dbeafe;background:rgba(15,23,42,.58);border:1px solid rgba(125,211,252,.2);
      font-size:13px;font-weight:700;
      transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
    }
    .location-pill:hover{background:rgba(56,189,248,.09);border-color:rgba(125,211,252,.36);box-shadow:0 0 24px rgba(56,189,248,.12)}
    .location-dot{
      width:9px;height:9px;border-radius:99px;background:var(--cyan-2);
      box-shadow:0 0 0 5px rgba(34,211,238,.12),0 0 16px rgba(34,211,238,.9);
    }
    .hamburger{display:none;width:44px;height:44px;border-radius:999px;background:rgba(15,23,42,.6);border:1px solid var(--line);color:#fff}
    .mobile-panel{display:none;border-top:1px solid rgba(148,163,184,.14);padding:16px 0 22px}
    .mobile-panel.open{display:block}
    .mobile-panel .nav-link{display:block;margin:8px 0}
    .mobile-panel .location-pill{width:100%;justify-content:center;margin:10px 0 14px}
    .article-hero{
      position:relative;
      padding:56px 0 34px;
    }
    .article-hero:before{
      content:"";
      position:absolute;
      width:520px;height:520px;
      right:-160px;top:-180px;
      border-radius:999px;
      background:radial-gradient(circle,rgba(99,102,241,.28),transparent 68%);
      filter:blur(6px);
      pointer-events:none;
    }
    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:10px;
      color:var(--soft);
      font-size:14px;
      margin-bottom:26px;
    }
    .breadcrumb a,.breadcrumb span{
      display:inline-flex;
      align-items:center;
      min-height:34px;
      padding:6px 12px;
      border:1px solid rgba(125,211,252,.16);
      border-radius:999px;
      background:rgba(15,23,42,.38);
    }
    .breadcrumb a:hover{color:#fff;border-color:rgba(125,211,252,.36);background:rgba(56,189,248,.1)}
    .article-title-wrap{
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      gap:28px;
      align-items:end;
    }
    .article-title-card{
      position:relative;
      padding:34px;
      border-radius:var(--radius-lg);
      background:linear-gradient(135deg,rgba(15,23,42,.72),rgba(8,13,28,.78));
      border:1px solid rgba(125,211,252,.2);
      box-shadow:var(--shadow);
      backdrop-filter:blur(18px);
      overflow:hidden;
    }
    .article-title-card:after{
      content:"";
      position:absolute;
      inset:auto -80px -120px auto;
      width:300px;height:300px;border-radius:999px;
      background:radial-gradient(circle,rgba(56,189,248,.18),transparent 70%);
      pointer-events:none;
    }
    .article-labels{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
    .article-title-card h1{
      margin:0;
      font-size:clamp(34px,5.2vw,62px);
      line-height:1.08;
      letter-spacing:-.055em;
      font-weight:950;
      color:#fff;
      max-width:880px;
    }
    .article-description{
      margin-top:18px;
      max-width:850px;
      color:var(--muted);
      font-size:16px;
      line-height:1.85;
    }
    .meta-row{
      margin-top:24px;
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      color:#dbeafe;
      font-size:14px;
    }
    .meta-chip{
      display:inline-flex;align-items:center;gap:8px;
      padding:9px 12px;border-radius:999px;
      background:rgba(2,6,23,.36);
      border:1px solid rgba(148,163,184,.16);
    }
    .side-brief{
      padding:24px;
      border-radius:var(--radius-md);
      background:rgba(15,23,42,.54);
      border:1px solid rgba(125,211,252,.18);
      box-shadow:0 20px 60px rgba(2,8,23,.33);
      backdrop-filter:blur(18px);
    }
    .brief-head{
      display:flex;align-items:center;justify-content:space-between;gap:14px;
      padding-bottom:16px;margin-bottom:16px;
      border-bottom:1px solid rgba(148,163,184,.16);
    }
    .brief-title{font-weight:850;color:#fff}
    .pulse{width:10px;height:10px;border-radius:99px;background:#22d3ee;box-shadow:0 0 18px rgba(34,211,238,.9)}
    .brief-list{display:grid;gap:12px}
    .brief-item{
      display:flex;gap:12px;align-items:flex-start;
      padding:12px;border-radius:16px;
      background:rgba(2,6,23,.26);
      border:1px solid rgba(148,163,184,.12);
    }
    .brief-index{
      width:26px;height:26px;border-radius:10px;
      display:grid;place-items:center;
      color:#fff;font-size:12px;font-weight:900;
      background:linear-gradient(135deg,var(--cyan),var(--indigo));
      box-shadow:0 0 18px rgba(56,189,248,.18);
      flex:0 0 auto;
    }
    .brief-item strong{display:block;font-size:14px;color:#eef6ff;line-height:1.35}
    .brief-item span{display:block;margin-top:2px;color:var(--soft);font-size:13px;line-height:1.5}
    .content-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 310px;
      gap:30px;
      align-items:start;
    }
    .article-card{
      border-radius:var(--radius-lg);
      background:rgba(8,13,28,.78);
      border:1px solid rgba(125,211,252,.18);
      box-shadow:var(--shadow);
      backdrop-filter:blur(18px);
      overflow:hidden;
    }
    .value-strip{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:1px;
      background:rgba(148,163,184,.12);
      border-bottom:1px solid rgba(148,163,184,.15);
    }
    .value-strip div{
      padding:18px 22px;
      background:rgba(15,23,42,.56);
    }
    .value-strip b{
      display:block;
      color:#fff;
      font-size:15px;
      margin-bottom:3px;
    }
    .value-strip span{color:var(--soft);font-size:13px}
    .article-body{
      padding:42px;
      color:#dbe7f5;
      font-size:17px;
      line-height:1.95;
    }
    .article-body h2{
      margin:2.3em 0 .8em;
      font-size:clamp(25px,3vw,34px);
      line-height:1.25;
      font-weight:900;
      letter-spacing:-.035em;
      color:#fff;
    }
    .article-body h3{
      margin:2em 0 .65em;
      font-size:22px;
      line-height:1.35;
      font-weight:850;
      color:#eaf7ff;
    }
    .article-body p{margin:1em 0}
    .article-body a{
      color:#67e8f9;
      text-decoration:underline;
      text-decoration-color:rgba(103,232,249,.35);
      text-underline-offset:4px;
      transition:color .2s ease,text-shadow .2s ease;
    }
    .article-body a:hover{color:#fff;text-shadow:0 0 18px rgba(34,211,238,.45)}
    .article-body ul,.article-body ol{padding-left:1.4em;margin:1.1em 0}
    .article-body li{margin:.45em 0;padding-left:.25em}
    .article-body blockquote{
      margin:1.6em 0;
      padding:20px 22px;
      border-left:4px solid var(--cyan-2);
      border-radius:0 18px 18px 0;
      background:rgba(56,189,248,.08);
      color:#e0f2fe;
      box-shadow:inset 0 0 0 1px rgba(125,211,252,.12);
    }
    .article-body img{
      margin:24px auto;
      border-radius:22px;
      border:1px solid rgba(125,211,252,.18);
      box-shadow:0 22px 60px rgba(2,8,23,.44);
    }
    .article-body figure{margin:28px 0}
    .article-body figcaption{
      margin-top:10px;
      text-align:center;
      color:var(--soft);
      font-size:14px;
    }
    .article-body table{
      width:100%;
      border-collapse:collapse;
      margin:24px 0;
      overflow:hidden;
      border-radius:18px;
      display:block;
      overflow-x:auto;
      border:1px solid rgba(148,163,184,.18);
    }
    .article-body th,.article-body td{
      padding:13px 16px;
      border-bottom:1px solid rgba(148,163,184,.14);
      white-space:nowrap;
    }
    .article-body th{
      color:#fff;
      background:rgba(56,189,248,.12);
      font-weight:800;
    }
    .article-body td{color:#dbe7f5;background:rgba(15,23,42,.34)}
    .article-body code{
      padding:.18em .45em;
      border-radius:8px;
      color:#cffafe;
      background:rgba(56,189,248,.11);
      border:1px solid rgba(125,211,252,.14);
      font-size:.92em;
    }
    .article-body pre{
      overflow:auto;
      padding:18px;
      border-radius:18px;
      background:#020617;
      border:1px solid rgba(125,211,252,.18);
      color:#dbeafe;
    }
    .not-found{
      padding:54px 26px;
      text-align:center;
    }
    .not-found h2{font-size:30px;margin:0 0 10px;color:#fff}
    .not-found p{color:var(--muted);margin-bottom:24px}
    .sidebar{position:sticky;top:100px;display:grid;gap:18px}
    .side-card{
      padding:22px;
      border-radius:var(--radius-md);
      background:rgba(15,23,42,.52);
      border:1px solid rgba(125,211,252,.17);
      backdrop-filter:blur(18px);
      box-shadow:0 18px 55px rgba(2,8,23,.32);
    }
    .side-card h2,.side-card h3{
      margin:0 0 14px;
      font-size:18px;
      font-weight:850;
      color:#fff;
    }
    .toc-list{display:grid;gap:10px;color:var(--muted);font-size:14px}
    .toc-list a{
      display:flex;align-items:center;gap:9px;
      padding:10px 11px;
      border-radius:14px;
      background:rgba(2,6,23,.24);
      border:1px solid rgba(148,163,184,.1);
      transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;
    }
    .toc-list a:hover{color:#fff;transform:translateX(2px);background:rgba(56,189,248,.08);border-color:rgba(125,211,252,.28)}
    .toc-list a:before{
      content:"";
      width:6px;height:6px;border-radius:99px;background:var(--cyan-2);
      box-shadow:0 0 12px rgba(34,211,238,.7);
      flex:0 0 auto;
    }
    .mini-form{
      display:grid;
      gap:12px;
      margin-top:12px;
    }
    .input-like{
      min-height:46px;
      display:flex;
      align-items:center;
      padding:12px 14px;
      border-radius:16px;
      background:rgba(2,6,23,.3);
      border:1px solid rgba(125,211,252,.16);
      color:var(--soft);
      font-size:14px;
    }
    .quote-wall{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
    }
    .quote-card{
      padding:24px;
      border-radius:var(--radius-md);
      background:rgba(15,23,42,.54);
      border:1px solid rgba(125,211,252,.17);
      box-shadow:0 18px 50px rgba(2,8,23,.28);
      transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
    }
    .quote-card:hover{transform:translateY(-3px);border-color:rgba(125,211,252,.34);box-shadow:var(--glow)}
    .quote-card p{margin:0;color:#dbeafe}
    .quote-card footer{
      margin-top:14px;
      display:flex;
      justify-content:space-between;
      gap:12px;
      color:var(--soft);
      font-size:13px;
    }
    .stars{color:#67e8f9;letter-spacing:1px;text-shadow:0 0 12px rgba(34,211,238,.45)}
    .related-grid{
      display:grid;
      grid-template-columns:1.25fr .75fr;
      gap:20px;
      align-items:stretch;
    }
    .related-main,.related-list{
      border-radius:var(--radius-lg);
      background:rgba(15,23,42,.56);
      border:1px solid rgba(125,211,252,.18);
      box-shadow:var(--shadow);
      backdrop-filter:blur(18px);
      overflow:hidden;
    }
    .related-main{padding:30px}
    .related-main h2{
      margin:14px 0 12px;
      font-size:clamp(26px,3.5vw,42px);
      line-height:1.15;
      font-weight:900;
      letter-spacing:-.04em;
    }
    .related-main p{color:var(--muted);max-width:680px}
    .related-list{padding:18px}
    .related-item{
      display:flex;
      justify-content:space-between;
      gap:14px;
      padding:16px;
      border-radius:18px;
      border:1px solid rgba(148,163,184,.12);
      background:rgba(2,6,23,.24);
      margin-bottom:12px;
      transition:transform .2s ease,border-color .2s ease,background .2s ease;
    }
    .related-item:last-child{margin-bottom:0}
    .related-item:hover{transform:translateY(-2px);border-color:rgba(125,211,252,.32);background:rgba(56,189,248,.07)}
    .related-item strong{display:block;color:#fff;font-size:15px}
    .related-item span{display:block;color:var(--soft);font-size:13px;margin-top:2px}
    .arrow{color:#67e8f9;font-weight:900;text-shadow:0 0 12px rgba(34,211,238,.45)}
    .faq-list{display:grid;gap:14px}
    .faq-item{
      border-radius:22px;
      background:rgba(15,23,42,.52);
      border:1px solid rgba(125,211,252,.16);
      overflow:hidden;
    }
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:19px 22px;
      background:transparent;
      color:#fff;
      text-align:left;
      font-weight:800;
    }
    .faq-question span:last-child{color:#67e8f9;font-size:22px;transition:transform .2s ease}
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .28s ease;
    }
    .faq-answer p{
      margin:0;
      padding:0 22px 20px;
      color:var(--muted);
    }
    .faq-item.open{border-color:rgba(125,211,252,.34);box-shadow:0 0 32px rgba(56,189,248,.1)}
    .faq-item.open .faq-answer{max-height:220px}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta-panel{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-lg);
      padding:42px;
      background:
        radial-gradient(circle at 80% 20%,rgba(139,92,246,.28),transparent 34%),
        radial-gradient(circle at 12% 82%,rgba(56,189,248,.22),transparent 36%),
        rgba(15,23,42,.64);
      border:1px solid rgba(125,211,252,.22);
      box-shadow:var(--shadow),var(--glow);
      backdrop-filter:blur(18px);
    }
    .cta-panel h2{
      margin:14px 0 12px;
      font-size:clamp(28px,4vw,46px);
      line-height:1.12;
      font-weight:950;
      letter-spacing:-.045em;
    }
    .cta-panel p{color:var(--muted);max-width:760px}
    .cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}
    .footer{
      padding:54px 0 28px;
      border-top:1px solid rgba(148,163,184,.14);
      background:rgba(2,6,23,.46);
      backdrop-filter:blur(18px);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.25fr .75fr .75fr;
      gap:26px;
      align-items:start;
    }
    .footer p{color:var(--soft);margin:14px 0 0;max-width:520px}
    .footer h3{margin:0 0 14px;color:#fff;font-size:16px;font-weight:850}
    .footer-links{display:grid;gap:10px;color:var(--muted);font-size:14px}
    .footer-links a:hover{color:#67e8f9}
    .copyright{
      margin-top:36px;
      padding-top:22px;
      border-top:1px solid rgba(148,163,184,.12);
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      color:var(--soft);
      font-size:13px;
    }
    @media (max-width:1024px){
      .desktop-nav{display:none}
      .nav-actions .location-pill{display:none}
      .nav-actions .btn{display:none}
      .hamburger{display:block}
      .article-title-wrap,.content-layout,.related-grid{grid-template-columns:1fr}
      .sidebar{position:static;grid-template-columns:1fr 1fr}
      .article-title-card{padding:28px}
      .section{padding:76px 0}
    }
    @media (max-width:768px){
      .site-container{width:min(100% - 32px,var(--container))}
      .nav-wrap{height:68px}
      .logo-mark{width:38px;height:38px;border-radius:14px}
      .article-hero{padding:34px 0 24px}
      .article-title-card{padding:24px;border-radius:26px}
      .side-brief{padding:20px}
      .value-strip{grid-template-columns:1fr}
      .article-body{padding:28px 22px;font-size:16px;line-height:1.9}
      .sidebar{grid-template-columns:1fr}
      .quote-wall{grid-template-columns:1fr}
      .cta-panel{padding:30px 22px}
      .cta-actions .btn{width:100%}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .site-container{width:min(100% - 28px,var(--container))}
      .badge{font-size:12px}
      .breadcrumb{gap:8px}
      .breadcrumb a,.breadcrumb span{max-width:100%;overflow:hidden;text-overflow:ellipsis}
      .article-labels,.meta-row{gap:8px}
      .meta-chip{width:100%;justify-content:center}
      .article-body h2{font-size:24px}
      .article-body h3{font-size:20px}
      .related-item{align-items:flex-start}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }