/* roulang page: index */
:root{
    --bg:#070d1c;
    --bg-soft:#0a1326;
    --bg-deep:#050a16;
    --panel:rgba(20,36,66,.58);
    --panel-solid:#0e1930;
    --line:rgba(122,170,255,.16);
    --line-strong:rgba(122,180,255,.42);
    --text:#e9f1ff;
    --text-soft:#b6c6e2;
    --muted:#8497b8;
    --brand:#3d8bff;
    --brand-deep:#2168dd;
    --accent:#5ff0d8;
    --radius:14px;
    --radius-sm:10px;
    --radius-xs:8px;
    --shadow:0 18px 40px -24px rgba(2,8,22,.95);
    --shadow-hover:0 26px 50px -22px rgba(33,104,221,.65);
    --glow:0 12px 34px -12px rgba(61,139,255,.85);
    --space:clamp(20px,4vw,34px);
    --max:1180px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:15px;
    line-height:1.78;
    color:var(--text);
    background:
      radial-gradient(1100px 560px at 84% -8%, rgba(61,139,255,.22), transparent 62%),
      radial-gradient(880px 480px at -6% 18%, rgba(95,240,216,.10), transparent 58%),
      var(--bg);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  h1,h2,h3{line-height:1.32;letter-spacing:.1px}
  :focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
  .container{width:100%;max-width:var(--max);margin:0 auto;padding:0 22px}
  .glass{
    background:linear-gradient(160deg, rgba(28,48,86,.72), rgba(12,22,42,.82));
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
  }

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(7,13,28,.78);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid rgba(122,170,255,.13);
    transition:box-shadow .25s ease, background .25s ease;
  }
  .site-header.is-stuck{box-shadow:0 14px 34px -22px rgba(0,0,0,.95);background:rgba(7,13,28,.94)}
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px}
  .logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:.4px;white-space:nowrap}
  .logo-mark{
    width:26px;height:26px;border-radius:8px;flex:0 0 auto;
    background:linear-gradient(140deg,var(--brand),var(--accent));
    box-shadow:0 0 0 1px rgba(95,240,216,.35), 0 8px 20px -8px rgba(61,139,255,.95);
    position:relative;
  }
  .logo-mark::after{
    content:"";position:absolute;inset:7px 6px;border-radius:3px;
    border:1.5px solid rgba(7,13,28,.75);border-bottom-color:transparent;
  }
  .main-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;min-height:40px;
    padding:0 13px;font-size:14px;color:var(--text-soft);border-radius:var(--radius-xs);
    transition:color .2s ease, background .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:13px;right:13px;bottom:6px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--brand),var(--accent));
    transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
  }
  .nav-link:hover{color:#fff;background:rgba(61,139,255,.10)}
  .nav-link:hover::after{transform:scaleX(.6)}
  .nav-link.is-active{color:#fff;font-weight:600}
  .nav-link.is-active::after{transform:scaleX(1)}
  .header-actions{display:flex;align-items:center;gap:10px}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:var(--radius-xs);
    border:1px solid var(--line);background:rgba(30,50,88,.55);cursor:pointer;
    align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;
  }
  .nav-toggle span{display:block;width:17px;height:1.8px;background:var(--text-soft);border-radius:2px;transition:.2s}
  .nav-toggle.is-open span:nth-child(1){transform:translateY(5.8px) rotate(45deg)}
  .nav-toggle.is-open span:nth-child(2){opacity:0}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-5.8px) rotate(-45deg)}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:var(--radius-xs);
    font-size:14.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
    transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
  }
  .btn-sm{min-height:38px;padding:0 16px;font-size:13.5px}
  .btn-block{width:100%}
  .btn-primary{
    color:#04101f;
    background:linear-gradient(135deg,var(--accent),var(--brand));
    box-shadow:var(--glow), inset 0 0 0 1px rgba(255,255,255,.22);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -12px rgba(95,240,216,.75), inset 0 0 0 1px rgba(255,255,255,.3)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 8px 20px -12px rgba(61,139,255,.9)}
  .btn-ghost{
    color:var(--text);background:rgba(30,52,92,.42);border-color:var(--line-strong);
  }
  .btn-ghost:hover{transform:translateY(-2px);border-color:var(--accent);color:#fff;background:rgba(40,72,124,.62)}

  /* ---------- hero ---------- */
  .hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:clamp(46px,7vw,84px) 0 clamp(42px,6vw,70px)}
  .hero-bg{
    position:absolute;inset:0;background-size:cover;background-position:center;
    opacity:.30;filter:saturate(1.15) contrast(1.05);
  }
  .hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg, rgba(7,13,28,.72) 0%, rgba(7,13,28,.88) 62%, var(--bg) 100%);
  }
  .hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr .85fr;gap:clamp(26px,4vw,52px);align-items:center}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:2px;
    color:var(--accent);text-transform:uppercase;margin-bottom:16px;
  }
  .eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);opacity:.8}
  .hero h1{
    font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:.4px;
    background:linear-gradient(180deg,#ffffff 20%,#b9d1f7 100%);
    -webkit-background-clip:text;background-clip:text;color:transparent;
    margin-bottom:18px;
  }
  .hero-lead{color:var(--text-soft);font-size:15.5px;line-height:1.85;max-width:640px}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .tag{
    display:inline-flex;align-items:center;min-height:32px;padding:0 14px;border-radius:999px;
    font-size:13px;color:#cfe2ff;background:rgba(61,139,255,.13);
    border:1px solid rgba(122,180,255,.28);
  }
  .tag:hover{background:rgba(61,139,255,.22);border-color:rgba(95,240,216,.5);color:#fff}
  .hero-panel{padding:26px;position:relative;overflow:hidden}
  .hero-panel::before{
    content:"";position:absolute;top:-60px;right:-40px;width:180px;height:180px;border-radius:50%;
    background:radial-gradient(circle, rgba(95,240,216,.28), transparent 70%);pointer-events:none;
  }
  .panel-label{font-size:13px;color:var(--muted);letter-spacing:1px;margin-bottom:14px}
  .progress{height:10px;border-radius:999px;background:rgba(122,170,255,.14);overflow:hidden;border:1px solid rgba(122,170,255,.16)}
  .progress span{
    display:block;height:100%;border-radius:999px;
    background:linear-gradient(90deg,var(--brand),var(--accent));
    box-shadow:0 0 16px rgba(95,240,216,.6);
  }
  .panel-stats{display:flex;gap:26px;margin:18px 0 4px}
  .panel-stats strong{display:block;font-size:24px;font-weight:800;color:#fff;line-height:1.2}
  .panel-stats span{font-size:12.5px;color:var(--muted)}
  .reward-list{margin:16px 0 20px;display:grid;gap:10px}
  .reward-list li{position:relative;padding-left:18px;font-size:13.5px;color:var(--text-soft);line-height:1.65}
  .reward-list li::before{
    content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:2px;
    background:var(--accent);box-shadow:0 0 10px rgba(95,240,216,.8);
  }
  .panel-note{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.6}

  /* ---------- sections ---------- */
  .section{padding:clamp(48px,6vw,76px) 0;border-bottom:1px solid rgba(122,170,255,.08)}
  .section--alt{background:linear-gradient(180deg, rgba(10,19,38,.92), rgba(7,13,28,.6))}
  .section--deep{background:var(--bg-deep)}
  .section-head{max-width:760px;margin-bottom:clamp(24px,3vw,38px)}
  .section-head.center{margin-left:auto;margin-right:auto;text-align:center}
  .section-kicker{
    display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:1.6px;
    color:var(--accent);margin-bottom:12px;
  }
  .section-kicker::before{content:"";width:20px;height:1px;background:linear-gradient(90deg,var(--accent),transparent)}
  .section-head.center .section-kicker::before{display:none}
  .section-title{font-size:clamp(20px,2.3vw,27px);font-weight:750;letter-spacing:.3px;color:#fff}
  .section-lead{margin-top:12px;color:var(--text-soft);font-size:14.8px;line-height:1.85}

  .grid{display:grid;gap:20px}
  .cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}

  .card{
    position:relative;padding:22px;border-radius:var(--radius);
    background:linear-gradient(160deg, rgba(26,45,82,.62), rgba(11,20,38,.86));
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
    display:flex;flex-direction:column;gap:12px;
    height:100%;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
  .card-icon{
    width:40px;height:40px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
    color:var(--accent);background:rgba(61,139,255,.14);border:1px solid rgba(122,180,255,.26);
    flex:0 0 auto;
  }
  .card-icon svg{width:20px;height:20px}
  .card h3{font-size:16.5px;font-weight:700;color:#fff}
  .card p{font-size:14px;color:var(--text-soft);line-height:1.75}
  .card-foot{margin-top:auto;display:flex;flex-wrap:wrap;gap:8px;padding-top:6px}
  .chip{
    display:inline-flex;align-items:center;min-height:26px;padding:0 10px;border-radius:999px;
    font-size:12px;color:#9fc0ee;background:rgba(61,139,255,.10);border:1px solid rgba(122,170,255,.20);
  }
  .card-link{
    display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--accent);font-weight:600;
    margin-top:auto;transition:gap .2s ease,color .2s ease;
  }
  .card-link:hover{gap:11px;color:#fff}

  /* entrance matrix */
  .matrix-card{
    padding:26px;border-radius:var(--radius);
    background:linear-gradient(150deg, rgba(34,60,106,.78), rgba(9,17,33,.94));
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    display:flex;flex-direction:column;gap:12px;height:100%;
  }
  .matrix-card:hover{transform:translateY(-4px);border-color:rgba(95,240,216,.5);box-shadow:0 26px 52px -24px rgba(95,240,216,.45)}
  .matrix-num{font-size:12.5px;letter-spacing:2px;color:var(--muted)}
  .matrix-card h3{font-size:18px;font-weight:750;color:#fff}
  .matrix-card p{font-size:13.8px;color:var(--text-soft)}
  .matrix-go{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-size:13.5px;font-weight:600;margin-top:auto}
  .matrix-card:hover .matrix-go{gap:11px}

  /* posts */
  .post-list{display:grid;gap:14px}
  .post-item{
    display:block;padding:18px 20px;border-radius:var(--radius);
    background:rgba(16,29,54,.62);border:1px solid var(--line);
    transition:transform .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
  }
  .post-item:hover{transform:translateY(-3px);border-color:rgba(95,240,216,.45);background:rgba(23,42,76,.82);box-shadow:0 22px 40px -24px rgba(61,139,255,.7)}
  .post-meta{display:flex;align-items:center;gap:12px;margin-bottom:8px;font-size:12.5px;color:var(--muted)}
  .badge{
    display:inline-flex;align-items:center;min-height:24px;padding:0 10px;border-radius:6px;
    font-size:12px;color:#04101f;font-weight:700;background:linear-gradient(135deg,var(--accent),var(--brand));
  }
  .post-title{font-size:15.8px;font-weight:700;color:#fff;line-height:1.55}
  .post-excerpt{margin-top:7px;font-size:13.6px;color:var(--text-soft);line-height:1.7}
  .empty-state{
    padding:26px;border-radius:var(--radius);border:1px dashed rgba(122,170,255,.3);
    color:var(--muted);font-size:14px;text-align:center;background:rgba(14,25,48,.5);
  }
  .split{display:grid;grid-template-columns:1.6fr .9fr;gap:22px;align-items:start}
  .side-panel{padding:22px;border-radius:var(--radius);border:1px solid var(--line);background:rgba(13,24,45,.78);box-shadow:var(--shadow)}
  .side-panel h3{font-size:15.5px;color:#fff;margin-bottom:14px}
  .side-list{display:grid;gap:12px}
  .side-list li{display:flex;gap:10px;font-size:13.5px;color:var(--text-soft);line-height:1.7}
  .side-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:8px;border-radius:50%;background:var(--accent);opacity:.85}

  /* stats */
  .stats-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
  .stat{
    padding:24px 20px;border-radius:var(--radius);text-align:left;
    background:linear-gradient(160deg, rgba(30,54,96,.7), rgba(10,19,36,.9));
    border:1px solid var(--line);box-shadow:var(--shadow);
    transition:transform .2s ease,border-color .2s ease;
  }
  .stat:hover{transform:translateY(-3px);border-color:var(--line-strong)}
  .stat strong{display:block;font-size:clamp(24px,2.6vw,32px);font-weight:800;color:#fff;line-height:1.15;letter-spacing:.5px}
  .stat span{display:block;margin-top:8px;font-size:13px;color:var(--muted)}

  /* steps */
  .steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;counter-reset:step}
  .step{
    position:relative;padding:24px 22px 22px;border-radius:var(--radius);
    background:rgba(17,31,58,.7);border:1px solid var(--line);box-shadow:var(--shadow);
  }
  .step::before{
    counter-increment:step;content:"0" counter(step);
    display:block;font-size:13px;font-weight:800;letter-spacing:2px;color:var(--accent);margin-bottom:10px;
  }
  .step h3{font-size:16px;color:#fff;margin-bottom:8px}
  .step p{font-size:13.8px;color:var(--text-soft);line-height:1.75}

  /* compare */
  .compare{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
  .compare-item{
    padding:22px;border-radius:var(--radius);border:1px solid var(--line);
    background:linear-gradient(160deg, rgba(25,45,82,.6), rgba(9,17,33,.92));
  }
  .compare-item h3{font-size:15px;color:#fff;margin-bottom:14px}
  .compare-line{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-top:1px dashed rgba(122,170,255,.18);font-size:13.4px}
  .compare-line:first-of-type{border-top:0}
  .compare-line span:first-child{color:var(--muted)}
  .compare-line span:last-child{color:#cfe2ff;font-weight:600;text-align:right}

  /* feature with image */
  .feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
  .feature-card{
    overflow:hidden;border-radius:var(--radius);border:1px solid var(--line);
    background:rgba(13,24,45,.82);box-shadow:var(--shadow);
    transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
    display:flex;flex-direction:column;
  }
  .feature-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
  .feature-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0a1326}
  .feature-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
  .feature-card:hover .feature-thumb img{transform:scale(1.04)}
  .feature-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:9px;flex:1}
  .feature-body h3{font-size:16px;color:#fff}
  .feature-body p{font-size:13.6px;color:var(--text-soft);line-height:1.72}

  /* quotes */
  .quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
  .quote{
    padding:22px;border-radius:var(--radius);border:1px solid var(--line);
    background:rgba(16,29,54,.66);box-shadow:var(--shadow);
    display:flex;flex-direction:column;gap:12px;
  }
  .quote p{font-size:13.8px;color:var(--text-soft);line-height:1.8}
  .quote-by{display:flex;align-items:center;gap:10px;margin-top:auto;font-size:13px;color:var(--muted)}
  .avatar{
    width:32px;height:32px;border-radius:50%;flex:0 0 auto;
    background:linear-gradient(140deg,var(--brand),var(--accent));opacity:.85;
  }

  /* platform */
  .platform-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
  .platform{
    display:flex;align-items:center;gap:12px;padding:18px;border-radius:var(--radius);
    border:1px solid var(--line);background:rgba(15,28,52,.7);color:var(--text-soft);
    font-size:14px;transition:border-color .2s ease,transform .2s ease;
  }
  .platform:hover{border-color:var(--line-strong);transform:translateY(-3px);color:#fff}
  .platform svg{width:22px;height:22px;color:var(--accent);flex:0 0 auto}

  /* faq */
  .faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
  .faq-item{
    border:1px solid var(--line);border-radius:var(--radius);background:rgba(14,25,47,.72);
    padding:4px 20px;transition:border-color .2s ease,background .2s ease;
  }
  .faq-item[open]{border-color:var(--line-strong);background:rgba(19,34,62,.86)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:16px 0;font-size:15px;font-weight:650;color:#fff;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{content:"+";font-size:20px;color:var(--accent);line-height:1;flex:0 0 auto}
  .faq-item[open] summary::after{content:"−"}
  .faq-item p{padding:0 0 18px;font-size:14px;color:var(--text-soft);line-height:1.85}

  /* join */
  .join-wrap{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
  .join-info{display:grid;gap:14px}
  .join-info h2{font-size:clamp(20px,2.2vw,26px);color:#fff}
  .join-info p{font-size:14.6px;color:var(--text-soft);line-height:1.85}
  .join-form{padding:26px;border-radius:var(--radius);border:1px solid var(--line);background:linear-gradient(160deg, rgba(28,48,86,.72), rgba(10,19,36,.92));box-shadow:var(--shadow);display:grid;gap:16px}
  .field{display:grid;gap:7px}
  .field label{font-size:13.5px;color:var(--text-soft)}
  .field input,.field textarea,.field select{
    width:100%;padding:12px 14px;border-radius:var(--radius-xs);
    background:rgba(8,15,30,.85);border:1px solid rgba(122,170,255,.22);
    color:var(--text);font-size:14px;font-family:inherit;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .field textarea{min-height:104px;resize:vertical}
  .field input::placeholder,.field textarea::placeholder{color:#5f7292}
  .field input:focus,.field textarea:focus,.field select:focus{
    outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(95,240,216,.16);
  }
  .form-note{font-size:12.4px;color:var(--muted);line-height:1.7}
  .form-tip{
    display:none;font-size:13.5px;color:var(--accent);padding:10px 14px;border-radius:var(--radius-xs);
    background:rgba(95,240,216,.10);border:1px solid rgba(95,240,216,.34);
  }
  .form-tip.is-on{display:block}

  /* footer */
  .site-footer{background:var(--bg-deep);border-top:1px solid rgba(122,170,255,.14);padding:clamp(38px,5vw,56px) 0 26px}
  .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:32px}
  .footer-brand .logo{margin-bottom:14px}
  .footer-brand p{font-size:13.5px;color:var(--muted);line-height:1.8;max-width:340px}
  .footer-col h4{font-size:14px;color:#fff;margin-bottom:14px;letter-spacing:.5px}
  .footer-col ul{display:grid;gap:10px}
  .footer-col a{font-size:13.5px;color:var(--text-soft);transition:color .2s ease}
  .footer-col a:hover{color:var(--accent)}
  .footer-bottom{
    margin-top:30px;padding-top:20px;border-top:1px solid rgba(122,170,255,.12);
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
    font-size:12.6px;color:var(--muted);
  }

  /* responsive */
  @media (max-width:1024px){
    .hero-inner{grid-template-columns:1fr;align-items:start}
    .cols-4,.stats-row,.platform-row{grid-template-columns:repeat(2,minmax(0,1fr))}
    .cols-3,.feature-grid,.quotes,.steps,.compare{grid-template-columns:repeat(2,minmax(0,1fr))}
    .split{grid-template-columns:1fr}
    .join-wrap{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
    .footer-brand{grid-column:1 / -1}
  }
  @media (max-width:820px){
    .main-nav{
      position:absolute;left:0;right:0;top:64px;
      flex-direction:column;align-items:stretch;gap:2px;padding:12px 18px 18px;
      background:rgba(7,13,28,.98);border-bottom:1px solid var(--line);
      box-shadow:0 24px 40px -28px rgba(0,0,0,.95);
      display:none;
    }
    .main-nav.is-open{display:flex}
    .nav-link{min-height:44px;padding:0 12px;width:100%}
    .nav-link::after{left:12px;right:auto;width:22px;bottom:10px}
    .nav-toggle{display:inline-flex}
    .header-actions .btn-sm{display:none}
  }
  @media (max-width:768px){
    body{font-size:14.6px}
    .cols-2,.cols-3,.cols-4,.stats-row,.platform-row,.feature-grid,.quotes,.steps,.compare{grid-template-columns:1fr}
    .section{padding:42px 0}
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .hero-panel{padding:20px}
    .card,.matrix-card,.post-item{padding:18px}
  }
  @media (max-width:520px){
    .container{padding:0 16px}
    .hero h1{font-size:25px}
    .hero-tags{gap:8px}
    .tag{font-size:12px;padding:0 11px}
    .panel-stats{gap:18px}
    .btn{width:100%}
    .header-actions{gap:6px}
    .footer-bottom{flex-direction:column;text-align:left}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  }

/* roulang page: article */
:root{
 --bg:#070d1c;
 --bg-soft:#0a1326;
 --bg-deep:#050a16;
 --panel:rgba(20,36,66,.58);
 --panel-solid:#0e1930;
 --line:rgba(122,170,255,.16);
 --line-strong:rgba(122,180,255,.42);
 --text:#e9f1ff;
 --text-soft:#b6c6e2;
 --muted:#8497b8;
 --brand:#3d8bff;
 --brand-deep:#2168dd;
 --accent:#5ff0d8;
 --radius:14px;
 --radius-sm:10px;
 --radius-xs:8px;
 --shadow:0 18px 40px -24px rgba(2,8,22,.95);
 --shadow-hover:0 26px 50px -22px rgba(33,104,221,.65);
 --glow:0 12px 34px -12px rgba(61,139,255,.85);
 --space:clamp(20px,4vw,34px);
 --max:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
 font-size:15px;
 line-height:1.78;
 color:var(--text);
 background:
 radial-gradient(1100px 560px at 84% -8%, rgba(61,139,255,.22), transparent 62%),
 radial-gradient(880px 480px at -6% 18%, rgba(95,240,216,.10), transparent 58%),
 var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:.2px}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 14px;padding-left:20px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 22px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(7,13,28,.78);
 backdrop-filter:blur(16px);
 -webkit-backdrop-filter:blur(16px);
 border-bottom:1px solid rgba(122,170,255,.13);
 transition:box-shadow .25s ease, background .25s ease;
}
.site-header.is-stuck{box-shadow:0 14px 34px -22px rgba(0,0,0,.95);background:rgba(7,13,28,.94)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:.4px;white-space:nowrap}
.logo-mark{
 width:26px;height:26px;border-radius:8px;flex:0 0 auto;
 background:linear-gradient(140deg,var(--brand),var(--accent));
 box-shadow:0 0 0 1px rgba(95,240,216,.35), 0 8px 20px -8px rgba(61,139,255,.95);
 position:relative;
}
.logo-mark::after{
 content:"";position:absolute;inset:7px 6px;border-radius:3px;
 border:1.5px solid rgba(7,13,28,.75);border-bottom-color:transparent;
}
.main-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-link{
 position:relative;display:inline-flex;align-items:center;min-height:40px;
 padding:0 13px;font-size:14px;color:var(--text-soft);border-radius:var(--radius-xs);
 transition:color .2s ease, background .2s ease;
}
.nav-link::after{
 content:"";position:absolute;left:13px;right:13px;bottom:6px;height:2px;border-radius:2px;
 background:linear-gradient(90deg,var(--brand),var(--accent));
 transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:#fff;background:rgba(61,139,255,.10)}
.nav-link:hover::after{transform:scaleX(.6)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:var(--radius-xs);
 border:1px solid var(--line);background:rgba(30,50,88,.55);cursor:pointer;
 align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;
}
.nav-toggle span{display:block;width:17px;height:1.8px;background:var(--text-soft);border-radius:2px;transition:.2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5.8px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5.8px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:44px;padding:0 22px;border-radius:var(--radius-xs);
 font-size:14.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
 transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px}
.btn-block{width:100%}
.btn-primary{
 color:#04101f;
 background:linear-gradient(135deg,var(--accent),var(--brand));
 box-shadow:var(--glow), inset 0 0 0 1px rgba(255,255,255,.22);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -12px rgba(95,240,216,.75), inset 0 0 0 1px rgba(255,255,255,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 20px -12px rgba(61,139,255,.9)}
.btn-ghost{color:var(--text);background:rgba(30,52,92,.42);border-color:var(--line-strong)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--accent);color:#fff;background:rgba(40,72,124,.62)}

/* ---------- article hero ---------- */
.article-hero{
 position:relative;overflow:hidden;
 padding:clamp(28px,4vw,46px) 0 clamp(26px,3.6vw,40px);
 border-bottom:1px solid var(--line);
 background:
 radial-gradient(760px 320px at 88% 0%, rgba(61,139,255,.20), transparent 66%),
 linear-gradient(180deg, rgba(10,19,38,.92), rgba(7,13,28,.75));
}
.article-hero::before{
 content:"";position:absolute;inset:0;
 background-image:url(/assets/images/d1eb0926391955bb.webp);
 background-size:cover;background-position:center;
 opacity:.16;filter:saturate(1.1);
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.8px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--text-soft);transition:color .2s}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span.sep{opacity:.5}
.hero-tag{
 display:inline-flex;align-items:center;gap:8px;min-height:28px;padding:0 12px;
 border-radius:999px;font-size:12.5px;color:var(--accent);
 background:rgba(95,240,216,.10);border:1px solid rgba(95,240,216,.30);
 margin-bottom:16px;
}
.article-hero h1{
 font-size:clamp(24px,3vw,38px);font-weight:800;letter-spacing:.4px;
 background:linear-gradient(180deg,#ffffff 20%,#b9d1f7 100%);
 -webkit-background-clip:text;background-clip:text;color:transparent;
 max-width:920px;
}
.hero-desc{color:var(--text-soft);font-size:15px;line-height:1.85;max-width:820px;margin-top:16px}
.meta-strip{
 display:flex;flex-wrap:wrap;gap:0;margin-top:26px;
 border:1px solid var(--line);border-radius:var(--radius-sm);
 background:rgba(14,25,48,.62);
 backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
 overflow:hidden;
}
.meta-item{
 flex:1 1 160px;padding:13px 18px;
 border-right:1px solid var(--line);
 display:flex;flex-direction:column;gap:4px;min-width:0;
}
.meta-item:last-child{border-right:0}
.meta-item .k{font-size:11.5px;letter-spacing:1.6px;color:var(--muted);text-transform:uppercase}
.meta-item .v{font-size:14px;font-weight:600;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.meta-item .v.num{font-variant-numeric:tabular-nums;letter-spacing:.6px}

/* ---------- layout ---------- */
.article-wrap{padding:clamp(30px,4vw,52px) 0 clamp(50px,6vw,80px)}
.article-layout{
 display:grid;grid-template-columns:minmax(0,720px) 300px;
 gap:clamp(24px,3.6vw,46px);justify-content:center;align-items:start;
}
.panel{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow);
 backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.content-panel{padding:clamp(20px,2.6vw,34px)}
.panel-head{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.panel-head .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px 1px rgba(95,240,216,.7);flex:0 0 auto}
.panel-head h2{font-size:17.5px;font-weight:700;color:#fff}
.panel-head .sub{font-size:12.8px;color:var(--muted);margin-left:auto}

/* ---------- prose (CMS content) ---------- */
.prose{max-width:720px;font-size:15.4px;line-height:1.85;color:var(--text-soft);overflow-wrap:break-word}
.prose > *:first-child{margin-top:0}
.prose h2{
 font-size:20px;color:#fff;margin:32px 0 14px;padding-left:14px;position:relative;font-weight:700;
}
.prose h2::before{
 content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;
 background:linear-gradient(180deg,var(--accent),var(--brand));
}
.prose h3{font-size:16.5px;color:#eaf3ff;margin:24px 0 10px;font-weight:700}
.prose h4{font-size:15px;color:#eaf3ff;margin:20px 0 8px;font-weight:600}
.prose p{margin:0 0 15px}
.prose strong{color:#fff;font-weight:600}
.prose em{color:var(--accent);font-style:normal}
.prose ul,.prose ol{padding-left:22px;margin:0 0 16px}
.prose li{margin-bottom:7px}
.prose li::marker{color:var(--accent)}
.prose a{color:var(--accent);border-bottom:1px solid rgba(95,240,216,.4);transition:border-color .2s}
.prose a:hover{border-bottom-color:var(--accent)}
.prose img{border-radius:var(--radius-sm);margin:18px 0;border:1px solid var(--line);width:100%}
.prose blockquote{
 margin:20px 0;padding:14px 18px;border-left:3px solid var(--brand);
 background:rgba(61,139,255,.10);border-radius:0 var(--radius-xs) var(--radius-xs) 0;
 color:#d5e4ff;font-size:14.6px;
}
.prose code{
 background:rgba(95,240,216,.12);color:var(--accent);padding:2px 6px;
 border-radius:5px;font-size:13.6px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.prose table{
 width:100%;border-collapse:collapse;margin:18px 0;font-size:13.8px;
 border:1px solid var(--line);border-radius:var(--radius-xs);overflow:hidden;
}
.prose th,.prose td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.prose th{background:rgba(61,139,255,.14);color:#fff;font-weight:600;white-space:nowrap}
.prose tr:last-child td{border-bottom:0}
.prose hr{border:0;border-top:1px solid var(--line);margin:26px 0}

/* ---------- empty ---------- */
.empty-state{text-align:center;padding:44px 18px}
.empty-state h2{font-size:20px;color:#fff;margin-bottom:10px}
.empty-state p{color:var(--muted);font-size:14px;margin-bottom:22px}

/* ---------- section blocks ---------- */
.block{padding:clamp(34px,4.4vw,58px) 0;border-top:1px solid rgba(122,170,255,.10)}
.block.alt{background:linear-gradient(180deg, rgba(10,19,38,.72), rgba(7,13,28,0))}
.block-inner{max-width:1040px;margin:0 auto}
.section-head{display:flex;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.section-head .mark{width:3px;height:26px;border-radius:2px;background:linear-gradient(180deg,var(--accent),var(--brand));flex:0 0 auto}
.section-head h2{font-size:clamp(19px,2.1vw,23px);font-weight:800;color:#fff}
.section-head p{color:var(--muted);font-size:13.6px;margin:0;max-width:620px}
.section-kicker{font-size:12px;letter-spacing:2px;color:var(--accent);text-transform:uppercase;margin-bottom:8px}

.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}

.card{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:20px;box-shadow:var(--shadow);
 backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
 transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);background:rgba(26,45,80,.66)}
.card .ico{
 width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
 background:rgba(61,139,255,.16);border:1px solid rgba(122,180,255,.28);color:var(--accent);
 margin-bottom:14px;
}
.card .ico svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:15.6px;color:#fff;margin-bottom:8px;font-weight:700}
.card p{font-size:13.8px;color:var(--text-soft);line-height:1.78;margin:0}
.card .tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.tag{
 display:inline-flex;align-items:center;min-height:26px;padding:0 11px;border-radius:999px;
 font-size:12.2px;color:#cfe2ff;background:rgba(61,139,255,.13);
 border:1px solid rgba(122,180,255,.28);
}
.tag:hover{background:rgba(61,139,255,.24);border-color:var(--line-strong)}
.tag.accent{color:var(--accent);background:rgba(95,240,216,.10);border-color:rgba(95,240,216,.30)}

/* ---------- score table ---------- */
.table-wrap{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:rgba(14,25,48,.62)}
table.score{width:100%;border-collapse:collapse;font-size:13.9px}
table.score thead th{
 background:rgba(61,139,255,.16);color:#fff;font-weight:600;text-align:left;
 padding:12px 16px;font-size:13px;letter-spacing:.4px;white-space:nowrap;
 border-bottom:1px solid var(--line);
}
table.score td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--text-soft);vertical-align:top}
table.score tbody tr:last-child td{border-bottom:0}
table.score tbody tr{transition:background .2s}
table.score tbody tr:hover{background:rgba(61,139,255,.08)}
table.score td b{color:#fff;font-weight:600}
table.score td .num{font-variant-numeric:tabular-nums;color:var(--accent);font-weight:600}

/* ---------- steps ---------- */
.steps{display:grid;gap:12px;counter-reset:step}
.step{
 display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;align-items:start;
 padding:16px 18px;border:1px solid var(--line);border-radius:var(--radius-sm);
 background:rgba(14,25,48,.55);transition:border-color .2s, background .2s, transform .2s;
}
.step:hover{border-color:var(--line-strong);background:rgba(24,42,74,.72);transform:translateX(3px)}
.step .no{
 width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
 font-size:15px;font-weight:700;color:#04101f;
 background:linear-gradient(135deg,var(--accent),var(--brand));
 box-shadow:0 8px 20px -12px rgba(95,240,216,.9);
 font-variant-numeric:tabular-nums;
}
.step h3{font-size:15px;color:#fff;margin-bottom:6px}
.step p{font-size:13.7px;color:var(--text-soft);margin:0}

/* ---------- compare ---------- */
.compare-card{padding:20px;border-radius:var(--radius);border:1px solid var(--line);background:rgba(14,25,48,.62)}
.compare-card h3{font-size:15px;color:#fff;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.compare-card h3 .pill{
 font-size:11.5px;font-weight:600;padding:2px 9px;border-radius:999px;
 background:rgba(95,240,216,.12);color:var(--accent);border:1px solid rgba(95,240,216,.28);
}
.compare-row{display:flex;gap:10px;padding:9px 0;border-top:1px dashed rgba(122,170,255,.18);font-size:13.6px}
.compare-row:first-of-type{border-top:0}
.compare-row .lb{flex:0 0 92px;color:var(--muted)}
.compare-row .tx{color:var(--text-soft)}

/* ---------- glossary ---------- */
.glossary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.glossary .term{
 border:1px solid var(--line);border-radius:var(--radius-sm);padding:15px 17px;
 background:rgba(14,25,48,.5);
}
.glossary .term b{display:block;color:#fff;font-size:14.5px;margin-bottom:5px}
.glossary .term span{color:var(--text-soft);font-size:13.4px;line-height:1.7}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:10px}
details.faq{
 border:1px solid var(--line);border-radius:var(--radius-sm);
 background:rgba(14,25,48,.55);overflow:hidden;
 transition:border-color .2s, background .2s;
}
details.faq[open]{border-color:var(--line-strong);background:rgba(24,42,74,.72)}
details.faq summary{
 list-style:none;cursor:pointer;padding:15px 46px 15px 18px;position:relative;
 font-size:14.6px;font-weight:600;color:#eaf3ff;transition:color .2s;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary:hover{color:var(--accent)}
details.faq summary::after{
 content:"";position:absolute;right:18px;top:22px;width:9px;height:9px;
 border-right:2px solid var(--text-soft);border-bottom:2px solid var(--text-soft);
 transform:rotate(45deg);transition:transform .22s ease, border-color .2s;
}
details.faq[open] summary::after{transform:rotate(-135deg);border-color:var(--accent)}
details.faq .faq-body{padding:0 18px 16px;color:var(--text-soft);font-size:13.9px;line-height:1.8}

/* ---------- topics matrix ---------- */
.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.matrix a.card{display:block;text-decoration:none}
.matrix a.card:hover .card-link{color:var(--accent)}
.matrix h3{font-size:16px}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;color:var(--text-soft);transition:color .2s}
.card-link::after{content:"→";font-size:13px}

/* ---------- join form ---------- */
.join-band{
 border:1px solid rgba(95,240,216,.24);border-radius:var(--radius);
 background:
 radial-gradient(600px 220px at 12% 0%, rgba(95,240,216,.14), transparent 70%),
 rgba(14,25,48,.72);
 padding:clamp(22px,3vw,34px);
 box-shadow:var(--shadow);
}
.join-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.join-grid h2{font-size:clamp(19px,2.1vw,23px);color:#fff;margin-bottom:10px}
.join-grid p{color:var(--text-soft);font-size:14px}
.join-points{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:8px}
.join-points li{font-size:13.6px;color:var(--text-soft);padding-left:20px;position:relative}
.join-points li::before{
 content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:2px;
 background:linear-gradient(135deg,var(--accent),var(--brand));
}
.join-form{display:grid;gap:12px}
.field{display:grid;gap:6px}
.field label{font-size:12.6px;color:var(--muted);letter-spacing:.4px}
.field input,.field select,.field textarea{
 width:100%;min-height:42px;padding:10px 13px;border-radius:var(--radius-xs);
 background:rgba(7,13,28,.75);border:1px solid var(--line);color:var(--text);
 font-size:14px;font-family:inherit;transition:border-color .2s, box-shadow .2s, background .2s;
}
.field textarea{min-height:92px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
 outline:none;border-color:var(--line-strong);background:rgba(10,19,38,.95);
 box-shadow:0 0 0 3px rgba(61,139,255,.18);
}
.field input::placeholder,.field textarea::placeholder{color:#5f7291}

/* ---------- sidebar ---------- */
.sidebar{display:grid;gap:16px;position:sticky;top:88px}
.side-card{padding:18px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow);backdrop-filter:blur(10px)}
.side-card h3{font-size:14.5px;color:#fff;margin-bottom:13px;display:flex;align-items:center;gap:8px}
.side-card h3 .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px 1px rgba(95,240,216,.7)}
.side-list{list-style:none;padding:0;margin:0;display:grid;gap:2px}
.side-list a{
 display:flex;align-items:center;gap:9px;min-height:38px;padding:5px 8px;border-radius:var(--radius-xs);
 font-size:13.6px;color:var(--text-soft);transition:background .2s, color .2s, padding-left .2s;
}
.side-list a::before{
 content:"";width:5px;height:5px;border-radius:50%;background:var(--line-strong);flex:0 0 auto;transition:background .2s;
}
.side-list a:hover{background:rgba(61,139,255,.12);color:#fff;padding-left:12px}
.side-list a:hover::before{background:var(--accent)}
.side-facts{display:grid;gap:10px}
.fact{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13.3px;padding-bottom:9px;border-bottom:1px dashed rgba(122,170,255,.16)}
.fact:last-child{border-bottom:0;padding-bottom:0}
.fact span{color:var(--muted)}
.fact b{color:#fff;font-weight:600;font-variant-numeric:tabular-nums}
.side-cover{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);position:relative;box-shadow:var(--shadow)}
.side-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease}
.side-cover:hover img{transform:scale(1.05)}
.side-cover figcaption{
 position:absolute;left:0;right:0;bottom:0;padding:22px 14px 12px;font-size:12.4px;color:#dbe8ff;
 background:linear-gradient(180deg,transparent,rgba(5,10,22,.92));
}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:clamp(36px,5vw,56px) 0 0;margin-top:10px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:clamp(24px,3.4vw,40px);padding-bottom:32px}
.footer-brand p{color:var(--muted);font-size:13.4px;line-height:1.8;max-width:430px;margin-top:14px}
.footer-col h4{font-size:13.5px;color:#fff;margin-bottom:14px;letter-spacing:.6px}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.footer-col a{color:var(--text-soft);font-size:13.5px;transition:color .2s, padding-left .2s}
.footer-col a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{
 border-top:1px solid var(--line);padding:18px 0;
 display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
 color:var(--muted);font-size:12.6px;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .article-layout{grid-template-columns:minmax(0,1fr);gap:28px}
 .sidebar{position:static;grid-template-columns:repeat(2,minmax(0,1fr));display:grid}
 .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
 .matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
 .join-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr 1fr}
 .footer-brand{grid-column:1 / -1}
}
@media (max-width:860px){
 .main-nav{
  position:absolute;left:0;right:0;top:64px;
  flex-direction:column;align-items:stretch;gap:2px;
  padding:12px 18px 18px;
  background:rgba(7,13,28,.97);
  border-bottom:1px solid var(--line);
  box-shadow:0 24px 40px -26px rgba(0,0,0,.95);
  display:none;
 }
 .main-nav.is-open{display:flex}
 .nav-link{padding:0 12px;min-height:44px;border-radius:var(--radius-xs)}
 .nav-link::after{display:none}
 .nav-link.is-active{background:rgba(61,139,255,.16);color:var(--accent)}
 .nav-toggle{display:flex}
 .header-actions .btn{display:none}
 .header-inner{position:relative}
}
@media (max-width:768px){
 .grid-3,.grid-2,.matrix,.glossary{grid-template-columns:1fr}
 .sidebar{grid-template-columns:1fr}
 .meta-item{flex:1 1 50%;border-right:0;border-bottom:1px solid var(--line)}
 .meta-item:nth-child(odd){border-right:1px solid var(--line)}
 .meta-item:nth-last-child(-n+2){border-bottom:0}
 .prose{font-size:15px}
 table.score{font-size:13.2px}
 table.score th,table.score td{padding:10px 12px}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .step{grid-template-columns:38px minmax(0,1fr);gap:13px}
 .step .no{width:38px;height:38px;border-radius:10px;font-size:14px}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .logo{font-size:14.6px}
 .logo-mark{width:23px;height:23px}
 .hero-desc{font-size:14px}
 .content-panel{padding:18px 16px}
 .card{padding:17px}
 .meta-item{flex:1 1 100%;border-right:0!important;border-bottom:1px solid var(--line)}
 .meta-item:last-child{border-bottom:0}
 .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
 .btn{width:100%}
 .header-actions .btn{width:auto}
}

/* roulang page: category1 */
:root{
  --bg:#070d1c;
  --bg-soft:#0a1326;
  --bg-deep:#050a16;
  --panel:rgba(20,36,66,.58);
  --panel-solid:#0e1930;
  --line:rgba(122,170,255,.16);
  --line-strong:rgba(122,180,255,.42);
  --text:#e9f1ff;
  --text-soft:#b6c6e2;
  --muted:#8497b8;
  --brand:#3d8bff;
  --brand-deep:#2168dd;
  --accent:#5ff0d8;
  --radius:14px;
  --radius-sm:10px;
  --radius-xs:8px;
  --shadow:0 18px 40px -24px rgba(2,8,22,.95);
  --shadow-hover:0 26px 50px -22px rgba(33,104,221,.65);
  --glow:0 12px 34px -12px rgba(61,139,255,.85);
  --space:clamp(20px,4vw,34px);
  --max:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.78;
  color:var(--text);
  background:
    radial-gradient(1100px 560px at 84% -8%, rgba(61,139,255,.22), transparent 62%),
    radial-gradient(880px 480px at -6% 18%, rgba(95,240,216,.10), transparent 58%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 22px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,13,28,.78);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(122,170,255,.13);
  transition:box-shadow .25s ease, background .25s ease;
}
.site-header.is-stuck{box-shadow:0 14px 34px -22px rgba(0,0,0,.95);background:rgba(7,13,28,.94)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:.4px;white-space:nowrap}
.logo-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand),var(--accent));
  box-shadow:0 0 0 1px rgba(95,240,216,.35), 0 8px 20px -8px rgba(61,139,255,.95);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:7px 6px;border-radius:3px;
  border:1.5px solid rgba(7,13,28,.75);border-bottom-color:transparent;
}
.main-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:40px;
  padding:0 13px;font-size:14px;color:var(--text-soft);border-radius:var(--radius-xs);
  transition:color .2s ease, background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:6px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:#fff;background:rgba(61,139,255,.10)}
.nav-link:hover::after{transform:scaleX(.6)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-xs);
  border:1px solid var(--line);background:rgba(30,50,88,.55);cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;
}
.nav-toggle span{display:block;width:17px;height:1.8px;background:var(--text-soft);border-radius:2px;transition:.2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5.8px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5.8px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-xs);
  font-size:14.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px}
.btn-block{width:100%}
.btn-primary{
  color:#04101f;
  background:linear-gradient(135deg,var(--accent),var(--brand));
  box-shadow:var(--glow), inset 0 0 0 1px rgba(255,255,255,.22);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -12px rgba(95,240,216,.75), inset 0 0 0 1px rgba(255,255,255,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 20px -12px rgba(61,139,255,.9)}
.btn-ghost{color:var(--text);background:rgba(30,52,92,.42);border-color:var(--line-strong)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--accent);color:#fff;background:rgba(40,72,124,.62)}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:clamp(40px,5.5vw,66px) 0 clamp(36px,5vw,58px)}
.page-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.26;filter:saturate(1.1) contrast(1.05);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(7,13,28,.74) 0%, rgba(7,13,28,.9) 60%, var(--bg) 100%);
}
.page-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:clamp(24px,4vw,48px);align-items:center}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-bottom:16px}
.crumb a{color:var(--text-soft);transition:color .2s ease}
.crumb a:hover{color:var(--accent)}
.crumb span.sep{opacity:.5}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:2px;
  color:var(--accent);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);opacity:.8}
.page-hero h1{
  font-size:clamp(25px,3.2vw,38px);font-weight:800;letter-spacing:.4px;line-height:1.34;
  background:linear-gradient(180deg,#ffffff 20%,#b9d1f7 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:16px;
}
.hero-lead{color:var(--text-soft);font-size:15.5px;line-height:1.85;max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;min-height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;color:#cfe2ff;background:rgba(61,139,255,.13);
  border:1px solid rgba(122,180,255,.28);
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.tag:hover{background:rgba(61,139,255,.22);border-color:var(--line-strong);transform:translateY(-1px)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

.hero-panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:18px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.panel-figure{position:relative;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--line);margin-bottom:16px}
.panel-figure img{width:100%;height:172px;object-fit:cover}
.panel-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,13,28,0) 30%,rgba(7,13,28,.72) 100%)}
.panel-figure figcaption{
  position:absolute;left:14px;right:14px;bottom:10px;z-index:2;
  font-size:12.5px;color:#d7e6ff;letter-spacing:.3px;
}
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.stat-item{
  background:rgba(12,24,45,.7);border:1px solid var(--line);border-radius:var(--radius-xs);
  padding:12px 14px;
}
.stat-num{display:block;font-size:20px;font-weight:800;color:var(--accent);letter-spacing:.5px;line-height:1.3}
.stat-label{display:block;font-size:12.5px;color:var(--muted);margin-top:2px}

/* ---------- sections ---------- */
.section{padding:clamp(44px,6vw,74px) 0;position:relative}
.section-alt{background:linear-gradient(180deg,rgba(10,19,38,.86),rgba(7,13,28,.2));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:clamp(24px,3.4vw,38px)}
.kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:1.6px;
  color:var(--accent);margin-bottom:12px;
}
.kicker::before{content:"";width:20px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.section-title{font-size:clamp(20px,2.4vw,27px);font-weight:750;letter-spacing:.3px;line-height:1.45}
.section-sub{color:var(--text-soft);font-size:14.5px;margin-top:10px;line-height:1.85}

/* ---------- cards ---------- */
.card-grid{display:grid;gap:18px}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:20px 20px 18px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease, background .22s ease;
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(160deg,rgba(95,240,216,.09),transparent 42%);
  opacity:0;transition:opacity .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);background:rgba(24,42,76,.68)}
.card:hover::before{opacity:1}
.card-icon{
  width:38px;height:38px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(61,139,255,.14);border:1px solid rgba(122,180,255,.3);
  color:var(--accent);margin-bottom:14px;
}
.card-icon svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card-title{font-size:16px;font-weight:700;letter-spacing:.2px;margin-bottom:8px}
.card-text{font-size:14px;color:var(--text-soft);line-height:1.78}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
  font-size:12px;color:#a9c6ee;background:rgba(61,139,255,.12);border:1px solid rgba(122,180,255,.24);
}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;counter-reset:step}
.flow-step{
  position:relative;
  background:linear-gradient(180deg,rgba(22,40,72,.72),rgba(12,24,45,.62));
  border:1px solid var(--line);border-radius:var(--radius);padding:18px 16px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.flow-step:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:9px;font-size:13px;font-weight:700;
  color:#04101f;background:linear-gradient(135deg,var(--accent),var(--brand));
  margin-bottom:10px;
}
.flow-step h3{font-size:14.5px;font-weight:700;margin-bottom:6px}
.flow-step p{font-size:13px;color:var(--muted);line-height:1.72}

/* ---------- branch cards with media ---------- */
.branch-card{padding:0;overflow:hidden}
.branch-media{position:relative;height:150px;overflow:hidden}
.branch-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.branch-card:hover .branch-media img{transform:scale(1.05)}
.branch-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,13,28,.05) 40%,rgba(7,13,28,.85) 100%)}
.branch-body{padding:16px 18px 18px}

/* ---------- compare list ---------- */
.compare-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:rgba(12,24,45,.55)}
.compare-row{
  display:grid;grid-template-columns:.9fr 1.5fr;gap:18px;
  padding:16px 20px;border-bottom:1px solid rgba(122,170,255,.11);
  transition:background .2s ease;
}
.compare-row:last-child{border-bottom:none}
.compare-row:hover{background:rgba(61,139,255,.08)}
.compare-key{font-size:14px;font-weight:650;color:#dcebff;display:flex;align-items:flex-start;gap:8px}
.compare-key::before{
  content:"";width:6px;height:6px;border-radius:50%;flex:0 0 auto;margin-top:9px;
  background:linear-gradient(135deg,var(--accent),var(--brand));
}
.compare-val{font-size:14px;color:var(--text-soft);line-height:1.78}

/* ---------- entry sample ---------- */
.entry-box{
  background:linear-gradient(160deg,rgba(16,30,56,.92),rgba(9,18,35,.92));
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:22px;
}
.entry-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.entry-id{font-size:12.5px;letter-spacing:1.4px;color:var(--accent);}
.entry-name{font-size:17px;font-weight:750;letter-spacing:.3px}
.entry-fields{display:grid;gap:10px}
.entry-field{
  display:grid;grid-template-columns:104px 1fr;gap:14px;
  padding:12px 14px;border-radius:var(--radius-xs);
  background:rgba(8,17,33,.72);border:1px solid rgba(122,170,255,.12);
}
.entry-key{font-size:13px;color:var(--muted);letter-spacing:.6px}
.entry-val{font-size:13.8px;color:var(--text-soft);line-height:1.75}
.entry-val b{color:#dff1ff;font-weight:650}
.entry-note{margin-top:14px;font-size:12.8px;color:var(--muted);line-height:1.75}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:0 18px;transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--line-strong);background:rgba(24,42,76,.62)}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow);background:rgba(24,42,76,.7)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 26px 16px 0;position:relative;
  font-size:15px;font-weight:650;color:#e6f0ff;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:2px;top:22px;width:9px;height:9px;
  border-right:1.8px solid var(--accent);border-bottom:1.8px solid var(--accent);
  transform:rotate(45deg);transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-answer{padding:0 0 18px;font-size:14px;color:var(--text-soft);line-height:1.82;max-width:780px}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line-strong);border-radius:var(--radius);
  background:
    radial-gradient(620px 320px at 88% 0%, rgba(95,240,216,.18), transparent 60%),
    linear-gradient(150deg,rgba(23,44,82,.95),rgba(9,18,35,.95));
  box-shadow:var(--shadow);padding:clamp(26px,4vw,44px);
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(22px,3.4vw,40px);align-items:center;
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:750;line-height:1.45;margin-bottom:10px}
.cta-band p{font-size:14.5px;color:var(--text-soft);line-height:1.82}
.join-form{display:grid;gap:12px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{display:grid;gap:6px}
.field label{font-size:12.5px;color:var(--muted);letter-spacing:.5px}
.field input,.field select{
  width:100%;min-height:44px;padding:0 14px;border-radius:var(--radius-xs);
  background:rgba(7,15,30,.85);border:1px solid var(--line);color:var(--text);
  font-size:14px;font-family:inherit;transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:#6f83a4}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(95,240,216,.16)}
.form-note{font-size:12.5px;color:var(--muted);line-height:1.7}
.form-done{
  display:none;font-size:13px;color:var(--accent);
  background:rgba(95,240,216,.1);border:1px solid rgba(95,240,216,.32);
  border-radius:var(--radius-xs);padding:10px 14px;
}
.form-done.is-on{display:block}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(6,12,25,.6),rgba(5,10,22,.98));padding:clamp(38px,5vw,58px) 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr .8fr .8fr;gap:clamp(24px,4vw,48px);padding-bottom:30px;border-bottom:1px solid rgba(122,170,255,.13)}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:13.5px;color:var(--muted);line-height:1.85;max-width:520px}
.footer-col h4{font-size:13.5px;font-weight:700;letter-spacing:1px;color:#dbe9ff;margin-bottom:14px}
.footer-col ul{display:grid;gap:9px}
.footer-col a{font-size:13.5px;color:var(--muted);transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--accent);padding-left:3px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;padding-top:20px;font-size:12.5px;color:#6f83a4}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .page-hero-inner{grid-template-columns:1fr;gap:26px}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow{grid-template-columns:repeat(3,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:768px){
  .main-nav{
    display:none;position:absolute;left:0;right:0;top:64px;
    flex-direction:column;align-items:stretch;gap:2px;
    background:rgba(8,16,32,.98);
    border-bottom:1px solid var(--line);
    padding:12px 22px 18px;
    box-shadow:0 24px 40px -28px rgba(0,0,0,.95);
  }
  .main-nav.is-open{display:flex}
  .nav-link{min-height:46px;padding:0 10px;font-size:15px}
  .nav-link::after{left:10px;right:auto;width:40px}
  .nav-toggle{display:inline-flex}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr 1fr}
  .compare-row{grid-template-columns:1fr;gap:6px;padding:14px 16px}
  .entry-field{grid-template-columns:1fr;gap:4px}
  .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
  .panel-figure img{height:150px}
}
@media (max-width:520px){
  body{font-size:14.5px}
  .container{padding:0 16px}
  .grid-4{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr}
  .hero-actions .btn{width:100%}
  .card{padding:18px 16px}
  .entry-fields{gap:8px}
}

/* roulang page: category2 */
:root{
 --bg:#070d1c;
 --bg-soft:#0a1326;
 --bg-deep:#050a16;
 --panel:rgba(20,36,66,.58);
 --panel-solid:#0e1930;
 --line:rgba(122,170,255,.16);
 --line-strong:rgba(122,180,255,.42);
 --text:#e9f1ff;
 --text-soft:#b6c6e2;
 --muted:#8497b8;
 --brand:#3d8bff;
 --brand-deep:#2168dd;
 --accent:#5ff0d8;
 --radius:14px;
 --radius-sm:10px;
 --radius-xs:8px;
 --shadow:0 18px 40px -24px rgba(2,8,22,.95);
 --shadow-hover:0 26px 50px -22px rgba(33,104,221,.65);
 --glow:0 12px 34px -12px rgba(61,139,255,.85);
 --space:clamp(20px,4vw,34px);
 --max:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
 font-size:15px;
 line-height:1.78;
 color:var(--text);
 background:
  radial-gradient(1100px 560px at 84% -8%, rgba(61,139,255,.22), transparent 62%),
  radial-gradient(880px 480px at -6% 18%, rgba(95,240,216,.10), transparent 58%),
  var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}
h1,h2,h3,h4,p,ul,ol,dl,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 22px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(7,13,28,.78);
 backdrop-filter:blur(16px);
 -webkit-backdrop-filter:blur(16px);
 border-bottom:1px solid rgba(122,170,255,.13);
 transition:box-shadow .25s ease, background .25s ease;
}
.site-header.is-stuck{box-shadow:0 14px 34px -22px rgba(0,0,0,.95);background:rgba(7,13,28,.94)}
.header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:.4px;white-space:nowrap}
.logo-mark{
 width:26px;height:26px;border-radius:8px;flex:0 0 auto;
 background:linear-gradient(140deg,var(--brand),var(--accent));
 box-shadow:0 0 0 1px rgba(95,240,216,.35), 0 8px 20px -8px rgba(61,139,255,.95);
 position:relative;
}
.logo-mark::after{
 content:"";position:absolute;inset:7px 6px;border-radius:3px;
 border:1.5px solid rgba(7,13,28,.75);border-bottom-color:transparent;
}
.main-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-link{
 position:relative;display:inline-flex;align-items:center;min-height:40px;
 padding:0 13px;font-size:14px;color:var(--text-soft);border-radius:var(--radius-xs);
 transition:color .2s ease, background .2s ease;
}
.nav-link::after{
 content:"";position:absolute;left:13px;right:13px;bottom:6px;height:2px;border-radius:2px;
 background:linear-gradient(90deg,var(--brand),var(--accent));
 transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:#fff;background:rgba(61,139,255,.10)}
.nav-link:hover::after{transform:scaleX(.6)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:var(--radius-xs);
 border:1px solid var(--line);background:rgba(30,50,88,.55);cursor:pointer;
 align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;
}
.nav-toggle span{display:block;width:17px;height:1.8px;background:var(--text-soft);border-radius:2px;transition:.2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5.8px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5.8px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:44px;padding:0 22px;border-radius:var(--radius-xs);
 font-size:14.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
 transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px}
.btn-block{width:100%}
.btn-primary{
 color:#04101f;
 background:linear-gradient(135deg,var(--accent),var(--brand));
 box-shadow:var(--glow), inset 0 0 0 1px rgba(255,255,255,.22);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -12px rgba(95,240,216,.75), inset 0 0 0 1px rgba(255,255,255,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 20px -12px rgba(61,139,255,.9)}
.btn-ghost{color:var(--text);background:rgba(30,52,92,.42);border-color:var(--line-strong)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--accent);color:#fff;background:rgba(40,72,124,.62)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:clamp(44px,6.4vw,78px) 0 clamp(40px,5.6vw,64px)}
.hero-bg{
 position:absolute;inset:0;background-image:url("/assets/images/d1eb0926391955bb.webp");
 background-size:cover;background-position:center;
 opacity:.30;filter:saturate(1.15) contrast(1.05);
}
.hero::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg, rgba(7,13,28,.74) 0%, rgba(7,13,28,.9) 62%, var(--bg) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.18fr .82fr;gap:clamp(26px,4vw,52px);align-items:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:2px;
 color:var(--accent);margin-bottom:16px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);opacity:.8}
.hero h1{
 font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:.4px;line-height:1.32;
 background:linear-gradient(180deg,#ffffff 20%,#b9d1f7 100%);
 -webkit-background-clip:text;background-clip:text;color:transparent;
 margin-bottom:16px;
}
.hero-lead{color:var(--text-soft);font-size:15.5px;line-height:1.85;max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
 display:inline-flex;align-items:center;min-height:32px;padding:0 14px;border-radius:999px;
 font-size:13px;color:#cfe2ff;background:rgba(61,139,255,.13);
 border:1px solid rgba(122,180,255,.28);
 transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.tag:hover{background:rgba(61,139,255,.24);border-color:var(--line-strong);transform:translateY(-1px)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-note{margin-top:16px;font-size:13px;color:var(--muted);line-height:1.7}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.badge{
 display:inline-flex;align-items:center;gap:6px;min-height:28px;padding:0 11px;
 font-size:12.5px;color:#d5e7ff;border-radius:999px;
 background:rgba(30,52,92,.6);border:1px solid var(--line);
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(95,240,216,.9)}
.hero-panel{
 background:linear-gradient(158deg, rgba(30,54,96,.66), rgba(11,22,42,.78));
 border:1px solid var(--line-strong);border-radius:var(--radius);
 padding:22px;box-shadow:var(--shadow);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.panel-head strong{font-size:14.5px;letter-spacing:.4px}
.panel-head span{font-size:11.5px;color:var(--muted);letter-spacing:1px}
.meter{margin-bottom:13px}
.meter:last-child{margin-bottom:0}
.meter-top{display:flex;justify-content:space-between;font-size:12.5px;color:var(--text-soft);margin-bottom:6px}
.meter-top b{color:var(--accent);font-weight:600}
.meter-bar{height:6px;border-radius:99px;background:rgba(122,170,255,.14);overflow:hidden}
.meter-bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.panel-foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted);line-height:1.7}

/* ---------- sections ---------- */
.section{position:relative;padding:clamp(50px,6.6vw,82px) 0}
.section--soft{
 background:linear-gradient(180deg, rgba(10,19,38,.78), rgba(5,10,22,.55));
 border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.section--deep{
 background:
  radial-gradient(900px 420px at 12% 0%, rgba(61,139,255,.16), transparent 62%),
  radial-gradient(700px 380px at 92% 100%, rgba(95,240,216,.09), transparent 60%),
  var(--bg-deep);
 border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.section-head{max-width:760px;margin-bottom:clamp(24px,3.6vw,38px)}
.section-head h2{font-size:clamp(21px,2.6vw,29px);font-weight:700;letter-spacing:.3px;line-height:1.4;margin-bottom:10px}
.section-head p{color:var(--muted);font-size:14.5px;line-height:1.8}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
 display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:2px;
 color:var(--accent);margin-bottom:12px;
}
.kicker::before{content:"";width:18px;height:1px;background:var(--accent);opacity:.8}
.section-head--center .kicker::after{content:"";width:18px;height:1px;background:var(--accent);opacity:.8}

/* ---------- grids & cards ---------- */
.grid{display:grid;gap:clamp(16px,2.2vw,22px)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
 position:relative;display:flex;flex-direction:column;
 padding:22px;border-radius:var(--radius);
 background:linear-gradient(158deg, rgba(26,46,84,.62), rgba(12,24,46,.72));
 border:1px solid var(--line);box-shadow:var(--shadow);
 backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
 transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.card h3{font-size:16px;font-weight:700;letter-spacing:.2px;margin-bottom:8px;line-height:1.5}
.card p{font-size:14px;color:var(--text-soft);line-height:1.78}
.card-icon{
 display:inline-flex;align-items:center;justify-content:center;
 width:42px;height:42px;border-radius:12px;margin-bottom:14px;
 color:var(--accent);
 background:rgba(61,139,255,.14);border:1px solid rgba(122,180,255,.24);
}
.card-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.mini-tag{
 display:inline-flex;align-items:center;min-height:24px;padding:0 9px;border-radius:99px;
 font-size:11.5px;color:#bcd6ff;background:rgba(30,52,92,.6);border:1px solid var(--line);
}
.card-media{
 border-radius:var(--radius-sm);overflow:hidden;margin-bottom:16px;border:1px solid var(--line);
 aspect-ratio:16/10;background:var(--bg-deep);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.04)}

/* ---------- split block ---------- */
.split{display:grid;grid-template-columns:1fr .92fr;gap:clamp(24px,4vw,48px);align-items:center}
.split-media{
 border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-strong);
 box-shadow:var(--shadow);position:relative;aspect-ratio:4/3;
}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-media::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg, rgba(7,13,28,.05), rgba(7,13,28,.55))}
.split-body h2{font-size:clamp(20px,2.5vw,28px);font-weight:700;line-height:1.42;margin-bottom:12px}
.split-body > p{color:var(--muted);font-size:14.5px;margin-bottom:20px}
.rule-list{display:grid;gap:12px}
.rule-list li{
 display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;
 padding:13px 15px;border-radius:var(--radius-sm);
 background:rgba(18,34,62,.55);border:1px solid var(--line);
 transition:border-color .2s ease,background .2s ease;
}
.rule-list li:hover{border-color:var(--line-strong);background:rgba(26,48,86,.62)}
.rule-index{
 display:inline-flex;align-items:center;justify-content:center;
 width:26px;height:26px;border-radius:8px;font-size:12.5px;font-weight:700;
 color:#04101f;background:linear-gradient(135deg,var(--accent),var(--brand));
}
.rule-list strong{display:block;font-size:14.5px;margin-bottom:3px}
.rule-list span{font-size:13.5px;color:var(--muted);line-height:1.7}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(14px,2vw,20px);counter-reset:step}
.step{
 position:relative;padding:22px 20px 20px;border-radius:var(--radius);
 background:rgba(17,32,58,.6);border:1px solid var(--line);
 transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.step::before{
 counter-increment:step;content:"0" counter(step);
 position:absolute;top:-13px;left:18px;
 display:inline-flex;align-items:center;justify-content:center;
 min-width:38px;height:26px;padding:0 8px;border-radius:99px;
 font-size:12px;font-weight:700;letter-spacing:1px;color:#04101f;
 background:linear-gradient(135deg,var(--accent),var(--brand));
 box-shadow:0 8px 20px -10px rgba(95,240,216,.9);
}
.step h3{font-size:15.5px;margin:12px 0 7px}
.step p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ---------- compare rows ---------- */
.compare-list{display:grid;gap:12px}
.compare-row{
 display:grid;grid-template-columns:.32fr .38fr .3fr;gap:16px;align-items:center;
 padding:16px 18px;border-radius:var(--radius-sm);
 background:rgba(18,34,62,.55);border:1px solid var(--line);
 transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.compare-row:hover{border-color:var(--line-strong);background:rgba(26,48,86,.62);transform:translateX(3px)}
.compare-row .c-name{font-size:14.5px;font-weight:600;color:#fff}
.compare-row .c-diff{font-size:13.5px;color:var(--text-soft)}
.compare-row .c-note{font-size:12.5px;color:var(--accent);display:inline-flex;align-items:center;gap:6px}
.compare-row .c-note::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto}

/* ---------- stats & checklist ---------- */
.checklist-wrap{display:grid;grid-template-columns:.86fr 1.14fr;gap:clamp(22px,3.6vw,40px);align-items:start}
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.stat{
 padding:18px;border-radius:var(--radius-sm);
 background:linear-gradient(160deg, rgba(28,50,90,.66), rgba(11,22,42,.7));
 border:1px solid var(--line);
 transition:border-color .2s ease,transform .2s ease;
}
.stat:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.stat b{display:block;font-size:clamp(24px,3vw,30px);font-weight:800;letter-spacing:.5px;color:var(--accent);line-height:1.2}
.stat span{display:block;font-size:12.8px;color:var(--muted);margin-top:5px}
.check-list{display:grid;gap:10px}
.check-list li{
 display:grid;grid-template-columns:auto 1fr;gap:11px;align-items:start;
 padding:13px 16px;border-radius:var(--radius-sm);
 background:rgba(18,34,62,.5);border:1px solid var(--line);
 font-size:14px;color:var(--text-soft);
}
.check-list li::before{
 content:"";width:16px;height:16px;margin-top:5px;border-radius:5px;
 border:1px solid rgba(95,240,216,.6);background:rgba(95,240,216,.18);
 box-shadow:inset 0 0 0 3px rgba(7,13,28,.55);
}

/* ---------- timeline ---------- */
.timeline{display:grid;gap:14px;border-left:1px solid var(--line-strong);padding-left:22px;margin-left:6px}
.timeline-item{position:relative;padding:16px 18px;border-radius:var(--radius-sm);background:rgba(18,34,62,.52);border:1px solid var(--line);transition:border-color .2s ease}
.timeline-item::before{
 content:"";position:absolute;left:-28px;top:22px;width:9px;height:9px;border-radius:50%;
 background:var(--accent);box-shadow:0 0 0 4px rgba(95,240,216,.14);
}
.timeline-item:hover{border-color:var(--line-strong)}
.timeline-item h3{font-size:15px;margin-bottom:6px}
.timeline-item p{font-size:13.5px;color:var(--muted)}
.timeline-date{
 display:inline-flex;align-items:center;min-height:24px;padding:0 10px;margin-bottom:9px;
 border-radius:99px;font-size:11.5px;letter-spacing:.6px;color:#bcd6ff;
 background:rgba(61,139,255,.16);border:1px solid rgba(122,180,255,.26);
}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{
 border-radius:var(--radius-sm);border:1px solid var(--line);
 background:rgba(18,34,62,.55);overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item[open]{border-color:var(--line-strong);background:rgba(24,44,80,.62)}
.faq-item summary{
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 padding:16px 18px;cursor:pointer;font-size:15px;font-weight:600;color:#e6f0ff;
 list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";display:inline-flex;align-items:center;justify-content:center;
 width:26px;height:26px;flex:0 0 auto;border-radius:8px;font-size:17px;font-weight:400;
 color:var(--accent);border:1px solid rgba(122,180,255,.28);transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-body{padding:0 18px 18px;font-size:14px;color:var(--muted);line-height:1.82}

/* ---------- cta / form ---------- */
.cta-panel{
 position:relative;overflow:hidden;border-radius:var(--radius);
 border:1px solid var(--line-strong);
 background:
  radial-gradient(720px 340px at 88% 0%, rgba(95,240,216,.16), transparent 62%),
  linear-gradient(150deg, rgba(30,58,104,.78), rgba(8,16,32,.9));
 box-shadow:var(--shadow);padding:clamp(24px,4vw,40px);
}
.cta-inner{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(22px,3.6vw,40px);align-items:start}
.cta-copy h2{font-size:clamp(21px,2.6vw,28px);font-weight:700;line-height:1.42;margin-bottom:12px}
.cta-copy p{color:var(--text-soft);font-size:14.5px;line-height:1.82;margin-bottom:16px}
.cta-points{display:grid;gap:9px}
.cta-points li{font-size:13.5px;color:var(--muted);display:grid;grid-template-columns:auto 1fr;gap:9px;align-items:start}
.cta-points li::before{content:"";width:7px;height:7px;margin-top:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(95,240,216,.8)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{display:flex;flex-direction:column;gap:6px}
.field--full{grid-column:1/-1}
.field label{font-size:12.8px;color:var(--text-soft);letter-spacing:.3px}
.field input,.field textarea,.field select{
 width:100%;min-height:44px;padding:11px 13px;border-radius:var(--radius-xs);
 color:var(--text);background:rgba(9,18,34,.72);
 border:1px solid var(--line);font-size:14px;
 transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:92px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#6d7f9e}
.field input:focus,.field textarea:focus,.field select:focus{
 outline:none;border-color:var(--line-strong);background:rgba(12,24,46,.9);
 box-shadow:0 0 0 3px rgba(61,139,255,.16);
}
.form-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:4px}
.form-note{grid-column:1/-1;font-size:12.5px;color:var(--muted);line-height:1.7;min-height:20px}
.form-note.is-ok{color:var(--accent)}

/* ---------- footer ---------- */
.site-footer{
 background:var(--bg-deep);border-top:1px solid var(--line);
 padding:clamp(38px,5.4vw,60px) 0 24px;
}
.footer-grid{
 display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:clamp(24px,3.4vw,38px);
 padding-bottom:30px;border-bottom:1px solid var(--line);
}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.8;margin-top:14px;max-width:430px}
.footer-col h4{font-size:14px;letter-spacing:1px;color:#cfe2ff;margin-bottom:14px}
.footer-col li{margin-bottom:9px}
.footer-col a{color:var(--muted);font-size:14px;transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--accent);padding-left:3px}
.footer-bottom{
 display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
 padding-top:20px;color:var(--muted);font-size:13px;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .hero-inner{grid-template-columns:1fr}
 .hero-panel{max-width:560px}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .split{grid-template-columns:1fr}
 .split-media{order:-1;max-width:560px}
 .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 16px}
 .checklist-wrap{grid-template-columns:1fr}
 .cta-inner{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr 1fr}
 .footer-brand{grid-column:1/-1}
}
@media (max-width:860px){
 .nav-toggle{display:inline-flex}
 .header-actions .btn-sm{display:none}
 .main-nav{
  display:none;position:absolute;left:0;right:0;top:calc(100% + 1px);
  flex-direction:column;align-items:stretch;gap:4px;
  padding:14px 22px 18px;
  background:rgba(7,13,28,.97);
  border-bottom:1px solid var(--line);
  box-shadow:0 24px 40px -24px rgba(0,0,0,.95);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
 }
 .main-nav.is-open{display:flex}
 .nav-link{min-height:44px;padding:0 12px;font-size:15px}
 .nav-link::after{left:12px;right:12px;bottom:9px}
}
@media (max-width:768px){
 .grid-3,.grid-2{grid-template-columns:1fr}
 .compare-row{grid-template-columns:1fr;gap:7px;align-items:start}
 .compare-row .c-diff{color:var(--text-soft)}
 .form-grid{grid-template-columns:1fr}
 .hero{padding-top:36px}
 .stat-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .grid-4{grid-template-columns:1fr}
 .steps{grid-template-columns:1fr}
 .stat-grid{grid-template-columns:1fr}
 .hero-actions .btn{width:100%}
 .logo-text{font-size:15px}
 .footer-bottom{flex-direction:column;gap:6px}
 .timeline{padding-left:16px}
 .timeline-item::before{left:-22px}
 .card,.step,.stat{padding:18px}
}

/* roulang page: category3 */
:root{
--bg:#070d1c;
--bg-soft:#0a1326;
--bg-deep:#050a16;
--panel:rgba(20,36,66,.58);
--panel-solid:#0e1930;
--line:rgba(122,170,255,.16);
--line-strong:rgba(122,180,255,.42);
--text:#e9f1ff;
--text-soft:#b6c6e2;
--muted:#8497b8;
--brand:#3d8bff;
--brand-deep:#2168dd;
--accent:#5ff0d8;
--radius:14px;
--radius-sm:10px;
--radius-xs:8px;
--shadow:0 18px 40px -24px rgba(2,8,22,.95);
--shadow-hover:0 26px 50px -22px rgba(33,104,221,.65);
--glow:0 12px 34px -12px rgba(61,139,255,.85);
--space:clamp(20px,4vw,34px);
--max:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
margin:0;
font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
font-size:15px;
line-height:1.78;
color:var(--text);
background:
radial-gradient(1100px 560px at 84% -8%, rgba(61,139,255,.22), transparent 62%),
radial-gradient(880px 480px at -6% 18%, rgba(95,240,216,.10), transparent 58%),
var(--bg);
-webkit-font-smoothing:antialiased;
text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 22px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
/* header */
.site-header{
position:sticky;top:0;z-index:60;
background:rgba(7,13,28,.78);
backdrop-filter:blur(16px);
-webkit-backdrop-filter:blur(16px);
border-bottom:1px solid rgba(122,170,255,.13);
transition:box-shadow .25s ease, background .25s ease;
}
.site-header.is-stuck{box-shadow:0 14px 34px -22px rgba(0,0,0,.95);background:rgba(7,13,28,.94)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px;position:relative}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:.4px;white-space:nowrap}
.logo-mark{
width:26px;height:26px;border-radius:8px;flex:0 0 auto;
background:linear-gradient(140deg,var(--brand),var(--accent));
box-shadow:0 0 0 1px rgba(95,240,216,.35), 0 8px 20px -8px rgba(61,139,255,.95);
position:relative;
}
.logo-mark::after{content:"";position:absolute;inset:7px 6px;border-radius:3px;border:1.5px solid rgba(7,13,28,.75);border-bottom-color:transparent}
.main-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-link{
position:relative;display:inline-flex;align-items:center;min-height:40px;
padding:0 13px;font-size:14px;color:var(--text-soft);border-radius:var(--radius-xs);
transition:color .2s ease, background .2s ease;
}
.nav-link::after{
content:"";position:absolute;left:13px;right:13px;bottom:6px;height:2px;border-radius:2px;
background:linear-gradient(90deg,var(--brand),var(--accent));
transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:#fff;background:rgba(61,139,255,.10)}
.nav-link:hover::after{transform:scaleX(.6)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
display:none;width:42px;height:42px;border-radius:var(--radius-xs);
border:1px solid var(--line);background:rgba(30,50,88,.55);cursor:pointer;
align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;
}
.nav-toggle span{display:block;width:17px;height:1.8px;background:var(--text-soft);border-radius:2px;transition:.2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5.8px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5.8px) rotate(-45deg)}
/* buttons */
.btn{
display:inline-flex;align-items:center;justify-content:center;gap:8px;
min-height:44px;padding:0 22px;border-radius:var(--radius-xs);
font-size:14.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px}
.btn-block{width:100%}
.btn-primary{color:#04101f;background:linear-gradient(135deg,var(--accent),var(--brand));box-shadow:var(--glow), inset 0 0 0 1px rgba(255,255,255,.22)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -12px rgba(95,240,216,.75), inset 0 0 0 1px rgba(255,255,255,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 20px -12px rgba(61,139,255,.9)}
.btn-ghost{color:var(--text);background:rgba(30,52,92,.42);border-color:var(--line-strong)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--accent);color:#fff;background:rgba(40,72,124,.62)}
.btn-ghost:active{transform:translateY(0)}
/* hero */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:clamp(44px,6.4vw,78px) 0 clamp(40px,5.6vw,66px)}
.cat-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.28;filter:saturate(1.15) contrast(1.05)}
.cat-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,13,28,.74) 0%,rgba(7,13,28,.9) 62%,var(--bg) 100%)}
.cat-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.18fr .82fr;gap:clamp(26px,4vw,54px);align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:2px;color:var(--accent);margin-bottom:16px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);opacity:.8}
.cat-hero h1{
font-size:clamp(28px,3.6vw,42px);font-weight:800;letter-spacing:.5px;margin-bottom:18px;
background:linear-gradient(180deg,#ffffff 20%,#b9d1f7 100%);
-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{color:var(--text-soft);font-size:15.5px;line-height:1.85;max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
display:inline-flex;align-items:center;min-height:32px;padding:0 14px;border-radius:999px;
font-size:13px;color:#cfe2ff;background:rgba(61,139,255,.13);
border:1px solid rgba(122,180,255,.28);
transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.tag:hover{background:rgba(61,139,255,.24);border-color:var(--line-strong);transform:translateY(-2px)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.cat-hero-panel{
background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
box-shadow:var(--shadow);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);overflow:hidden;
}
.panel-cover{margin:0;position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.panel-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.92}
.panel-cover figcaption{
position:absolute;left:14px;bottom:12px;font-size:12px;letter-spacing:.6px;
padding:5px 12px;border-radius:999px;color:#dff3ff;background:rgba(7,13,28,.72);border:1px solid rgba(122,180,255,.32);
}
.panel-body{padding:18px 20px 22px}
.panel-head{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--text-soft);font-weight:600;margin-bottom:14px}
.panel-head .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(95,240,216,.16)}
.panel-rows{display:grid;gap:10px}
.panel-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;border-radius:var(--radius-xs);background:rgba(10,22,44,.6);border:1px solid rgba(122,170,255,.12)}
.panel-row span{font-size:13px;color:var(--muted)}
.panel-row b{font-size:14.5px;color:var(--accent);font-weight:700;letter-spacing:.3px}
/* sections */
.section{padding:clamp(46px,6vw,76px) 0;position:relative}
.section--soft{background:linear-gradient(180deg,rgba(10,19,38,.9),rgba(7,13,28,.55));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:clamp(26px,3.4vw,40px)}
.section-head h2{font-size:clamp(22px,2.5vw,29px);letter-spacing:.3px;margin-bottom:12px}
.section-head h2 em{font-style:normal;color:var(--accent)}
.section-head p{color:var(--muted);font-size:14.5px;line-height:1.85}
.rule{width:52px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--brand),var(--accent));margin-bottom:16px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.card{
position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
padding:22px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:var(--shadow);
transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover);background:rgba(24,44,80,.68)}
.icon-chip{
width:42px;height:42px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
background:linear-gradient(140deg,rgba(61,139,255,.3),rgba(95,240,216,.16));
border:1px solid rgba(122,180,255,.3);color:var(--accent);
}
.icon-chip svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:16.5px;margin-bottom:9px;letter-spacing:.2px}
.card p{font-size:14px;color:var(--muted);line-height:1.8}
.card .tag-list{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.tag-list .mini{font-size:11.5px;padding:3px 9px;border-radius:999px;color:#a9c8f0;background:rgba(61,139,255,.12);border:1px solid rgba(122,170,255,.2)}
/* split feature blocks */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(22px,4vw,52px);align-items:center}
.split+.split{margin-top:clamp(34px,4.6vw,58px)}
.split-copy h3{font-size:clamp(19px,2.2vw,23px);margin-bottom:12px}
.split-copy p{color:var(--muted);font-size:14.5px;line-height:1.85}
.split-list{display:grid;gap:10px;margin-top:20px}
.split-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-soft);padding:10px 14px;border-radius:var(--radius-xs);background:rgba(14,27,50,.62);border:1px solid rgba(122,170,255,.13)}
.split-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto;box-shadow:0 0 0 3px rgba(95,240,216,.14)}
.split-figure{margin:0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);position:relative}
.split-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:16px;font-size:13px;color:#dceaff;background:linear-gradient(180deg,transparent,rgba(5,10,22,.92))}
/* demo */
.demo-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(22px,3.6vw,44px);align-items:start}
.demo-panel{background:linear-gradient(165deg,rgba(24,44,80,.82),rgba(9,18,34,.9));border:1px solid var(--line-strong);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-hover)}
.demo-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.demo-top span{font-size:13.5px;font-weight:600;color:var(--text-soft)}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:4px 11px;border-radius:999px;color:#0a1526;background:linear-gradient(135deg,var(--accent),#8ff3e4);font-weight:700}
.tile-row{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:18px}
.tile{
width:40px;height:54px;border-radius:9px;display:flex;flex-direction:column;align-items:center;justify-content:center;
background:linear-gradient(180deg,#f5f9ff,#cfe0f7);border:1px solid rgba(255,255,255,.65);
box-shadow:0 8px 18px -12px rgba(0,0,0,.95);color:#0a1526;line-height:1.1;
transition:transform .18s ease, box-shadow .18s ease;
}
.tile:hover{transform:translateY(-3px);box-shadow:0 12px 22px -12px rgba(95,240,216,.9)}
.tile b{font-size:15px;font-weight:800}
.tile i{font-style:normal;font-size:10px;color:#4a6b99;margin-top:2px}
.tile.is-ting{background:linear-gradient(180deg,#e6fff9,#9ef0e0);border-color:rgba(95,240,216,.7)}
.audit-list{display:grid;gap:9px}
.audit-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 14px;border-radius:var(--radius-xs);background:rgba(9,20,38,.7);border:1px solid rgba(122,170,255,.14);font-size:13.5px;color:var(--text-soft);transition:border-color .2s ease,background .2s ease}
.audit-item:hover{border-color:var(--line-strong);background:rgba(18,36,66,.8)}
.audit-item b{color:var(--accent);font-size:14px}
.demo-note{margin-top:16px;font-size:12.5px;color:var(--muted);border-top:1px dashed rgba(122,170,255,.2);padding-top:14px}
.step-list{display:grid;gap:14px}
.step{display:flex;gap:14px;padding:16px 18px;border-radius:var(--radius-sm);background:var(--panel);border:1px solid var(--line);transition:transform .2s ease,border-color .2s ease}
.step:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.step-no{flex:0 0 auto;width:32px;height:32px;border-radius:9px;display:grid;place-items:center;font-size:13.5px;font-weight:800;color:#04101f;background:linear-gradient(135deg,var(--accent),var(--brand))}
.step h4{font-size:15px;margin-bottom:5px}
.step p{font-size:13.5px;color:var(--muted);line-height:1.78}
/* stats */
.stat-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.stat-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.stat-num{font-size:clamp(26px,3vw,34px);font-weight:800;letter-spacing:.5px;background:linear-gradient(180deg,#ffffff,#7fc4ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{font-size:12.5px;letter-spacing:1.4px;color:var(--accent);margin:6px 0 12px}
.stat-card p{font-size:13.8px;color:var(--muted);line-height:1.8}
/* quotes */
.quote-card{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px 22px;box-shadow:var(--shadow);transition:transform .2s ease,border-color .2s ease}
.quote-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.quote-card::before{content:"“";position:absolute;top:6px;right:18px;font-size:52px;line-height:1;color:rgba(95,240,216,.22);font-family:Georgia,serif}
.quote-card p{font-size:14.2px;color:var(--text-soft);line-height:1.85}
.quote-meta{display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:14px;border-top:1px solid rgba(122,170,255,.14)}
.avatar{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;font-size:12.5px;font-weight:700;color:#04101f;background:linear-gradient(135deg,var(--accent),var(--brand))}
.quote-meta span{font-size:13px;color:var(--muted)}
/* faq */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-sm);background:rgba(16,30,56,.55);padding:0 18px;transition:border-color .2s ease,background .2s ease}
.faq-item:hover{border-color:var(--line-strong);background:rgba(20,38,70,.7)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:17px 0;font-size:15px;font-weight:600;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex:0 0 auto;width:24px;height:24px;border-radius:7px;display:grid;place-items:center;font-size:16px;font-weight:600;color:var(--accent);border:1px solid rgba(95,240,216,.35);background:rgba(95,240,216,.1);transition:transform .2s ease}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 0 18px;font-size:14.2px;color:var(--muted);line-height:1.85}
/* cta */
.cta-band{position:relative;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:clamp(44px,6vw,72px) 0}
.cta-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.22}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(5,10,22,.95),rgba(12,26,52,.78))}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(24px,4vw,48px);align-items:center}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
.cta-inner p{color:var(--text-soft);font-size:14.6px;line-height:1.85;max-width:560px}
.join-form{display:grid;gap:12px;background:rgba(12,24,46,.82);border:1px solid var(--line-strong);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-hover)}
.field{
width:100%;min-height:46px;padding:0 14px;border-radius:var(--radius-xs);
background:rgba(6,14,28,.9);border:1px solid var(--line);color:var(--text);font-size:14px;
transition:border-color .2s ease,box-shadow .2s ease;
}
.field::placeholder{color:#6d80a1}
.field:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(95,240,216,.16)}
.form-tip{font-size:12.8px;color:var(--accent);min-height:18px}
.form-hint{font-size:12.4px;color:var(--muted)}
/* footer */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(7,13,28,.4),rgba(5,10,22,.96));padding:clamp(38px,5vw,58px) 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr;gap:clamp(22px,4vw,48px);padding-bottom:34px}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:14px;max-width:440px;line-height:1.8}
.footer-col h4{font-size:13.5px;letter-spacing:1.2px;color:#fff;margin-bottom:14px}
.footer-col li+li{margin-top:10px}
.footer-col a{color:var(--muted);font-size:14px;transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--line);padding:18px 0 22px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:13px}
/* responsive */
@media (max-width:1024px){
.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
.cat-hero-inner{grid-template-columns:1fr}
.cat-hero-panel{max-width:560px}
.demo-grid{grid-template-columns:1fr}
.cta-inner{grid-template-columns:1fr}
}
@media (max-width:880px){
.main-nav{
display:none;position:absolute;left:-22px;right:-22px;top:64px;flex-direction:column;align-items:stretch;gap:2px;
padding:12px 22px 18px;background:rgba(7,13,28,.98);border-bottom:1px solid var(--line);
box-shadow:0 26px 46px -28px rgba(0,0,0,.98);backdrop-filter:blur(16px);
}
.main-nav.is-open{display:flex}
.nav-link{min-height:46px;padding:0 12px;border-radius:var(--radius-xs)}
.nav-link::after{left:12px;right:auto;width:22px;bottom:10px}
.nav-toggle{display:inline-flex}
.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
.split{grid-template-columns:1fr}
.split:nth-child(even) .split-figure{order:-1}
.footer-grid{grid-template-columns:1fr 1fr}
.footer-brand{grid-column:1 / -1}
}
@media (max-width:640px){
.container{padding:0 16px}
.header-actions .btn-sm{display:none}
.grid-3,.grid-2,.grid-4{grid-template-columns:1fr}
.hero-actions .btn{width:100%}
.cat-hero{padding-top:38px}
.tile{width:36px;height:50px}
.footer-grid{grid-template-columns:1fr}
.footer-bottom{flex-direction:column;gap:6px}
.section{padding:38px 0}
}
@media (max-width:380px){
.tile{width:32px;height:46px}
.tile b{font-size:13px}
}