/* roulang page: index */
:root{
  --ink:#17151d;
  --ink-2:#201d28;
  --panel:#27232f;
  --panel-2:#302b39;
  --lime:#c6f45b;
  --lime-2:#e0ff8a;
  --orange:#ff866b;
  --text:#f5f3f0;
  --muted:#aaa5b2;
  --line:rgba(255,255,255,.12);
  --soft:rgba(255,255,255,.06);
  --radius:18px;
  --radius-sm:10px;
  --shadow:0 20px 60px rgba(0,0,0,.28);
  --max:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--ink);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7;overflow-x:hidden}
body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.22;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,black,transparent 70%)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit}
button{cursor:pointer}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(23,21,29,.88);border-bottom:1px solid var(--line);backdrop-filter:blur(15px)}
.navbar{height:78px;display:flex;align-items:center;gap:34px}
.logo{display:flex;align-items:center;gap:11px;min-width:235px;font-weight:800;letter-spacing:-.5px}
.logo-mark{width:34px;height:34px;background:var(--lime);color:var(--ink);display:grid;place-items:center;border-radius:9px 4px 9px 4px;font-weight:900;font-size:18px}
.logo-text{font-size:17px;line-height:1.15}
.logo-text small{display:block;color:var(--muted);font-size:10px;letter-spacing:2px;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:5px;flex:1}
.nav-links a{color:var(--muted);padding:10px 13px;border-radius:8px;font-size:14px;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--lime);background:var(--soft)}
.nav-links a.active{position:relative}
.nav-links a.active:after{content:"";position:absolute;height:2px;background:var(--lime);bottom:2px;left:13px;right:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 21px;border:1px solid transparent;border-radius:9px;font-weight:700;font-size:14px;transition:.22s}
.btn-primary{background:var(--lime);color:#171a12}
.btn-primary:hover{background:var(--lime-2);transform:translateY(-2px);box-shadow:0 9px 25px rgba(198,244,91,.2)}
.btn-outline{border-color:var(--line);color:var(--text);background:transparent}
.btn-outline:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
.menu-toggle{display:none;background:none;border:0;color:var(--text);font-size:24px}
.hero{padding:92px 0 76px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:74px;align-items:center}
.eyebrow,.section-kicker{color:var(--lime);font:700 12px/1.2 ui-monospace,SFMono-Regular,monospace;letter-spacing:2px;text-transform:uppercase}
.hero h1{font-size:clamp(34px,4.4vw,62px);line-height:1.12;letter-spacing:-2px;margin:20px 0 23px;max-width:680px}
.hero h1 span{color:var(--lime)}
.hero-copy{font-size:17px;color:var(--muted);max-width:600px}
.hero-actions{display:flex;gap:12px;margin-top:31px;flex-wrap:wrap}
.hero-meta{display:flex;gap:25px;margin-top:32px;color:var(--muted);font-size:12px}
.hero-meta strong{display:block;color:var(--text);font-size:14px;margin-bottom:2px}
.hero-art{min-height:410px;position:relative;display:grid;place-items:center}
.orbit{width:370px;height:370px;border:1px solid rgba(198,244,91,.25);border-radius:50%;position:relative;transform:rotate(-18deg)}
.orbit:before,.orbit:after{content:"";position:absolute;border:1px solid rgba(255,134,107,.3);border-radius:50%;inset:35px 64px;transform:rotate(57deg)}
.orbit:after{inset:70px 15px;transform:rotate(-35deg);border-color:rgba(255,255,255,.14)}
.core{position:absolute;inset:92px;border-radius:28px 9px 28px 9px;background:linear-gradient(140deg,#3d3949,#1d1a24);border:1px solid rgba(198,244,91,.55);box-shadow:var(--shadow);transform:rotate(18deg);padding:25px}
.core-label{font:700 11px ui-monospace,monospace;color:var(--lime);letter-spacing:2px}
.core h2{font-size:30px;line-height:1.1;margin:22px 0 12px}
.core p{font-size:12px;color:var(--muted)}
.core-line{height:5px;background:var(--lime);width:72%;margin-top:25px;border-radius:5px;box-shadow:40px 0 0 -1px var(--orange)}
.float-tag{position:absolute;background:var(--panel-2);border:1px solid var(--line);padding:9px 13px;border-radius:8px;font-size:12px;box-shadow:var(--shadow)}
.float-tag.one{top:20px;right:5px;color:var(--lime)}
.float-tag.two{bottom:28px;left:0;color:var(--orange)}
.section{padding:78px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
.section-head h2{font-size:32px;line-height:1.2;margin-top:10px;letter-spacing:-1px}
.section-head p{color:var(--muted);font-size:14px;max-width:480px}
.quick-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr 1.1fr;gap:12px}
.quick-item{background:var(--panel);border:1px solid var(--line);padding:22px;border-radius:var(--radius-sm);min-height:126px;transition:.2s;position:relative;overflow:hidden}
.quick-item:first-child{background:var(--lime);color:var(--ink)}
.quick-item:hover{transform:translateY(-4px);border-color:var(--lime)}
.quick-item b{font-size:17px;display:block;margin:23px 0 4px}
.quick-item span{font-size:12px;color:var(--muted)}
.quick-item:first-child span{color:#4d5b25}
.quick-icon{font:700 12px ui-monospace,monospace;opacity:.8}
.feature-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:16px}
.feature-main{min-height:380px;padding:33px;border-radius:var(--radius);background:linear-gradient(135deg,#373142,#25212c);border:1px solid var(--line);position:relative;overflow:hidden}
.feature-main:after{content:"C7";position:absolute;right:-20px;bottom:-55px;font-size:280px;font-weight:900;color:rgba(198,244,91,.05);line-height:1}
.feature-main .tag{position:relative;z-index:1}
.tag{display:inline-block;padding:4px 9px;border-radius:4px;background:rgba(198,244,91,.12);color:var(--lime);font-size:11px;font-weight:700}
.feature-main h3{position:relative;z-index:1;font-size:30px;max-width:450px;line-height:1.25;margin:26px 0 12px}
.feature-main p{position:relative;z-index:1;color:var(--muted);max-width:480px}
.feature-main .btn{position:relative;z-index:1;margin-top:26px}
.mini-stack{display:flex;flex-direction:column;gap:16px}
.mini-card{flex:1;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);padding:23px;transition:.2s}
.mini-card:hover{border-color:var(--lime);transform:translateX(4px)}
.mini-card h3{font-size:18px;margin:15px 0 6px}
.mini-card p{font-size:13px;color:var(--muted)}
.info-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:25px}
.info-list{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.info-row{display:grid;grid-template-columns:90px 1fr auto;gap:18px;align-items:center;padding:20px 24px;border-bottom:1px solid var(--line);transition:.2s}
.info-row:last-child{border-bottom:0}
.info-row:hover{background:var(--soft)}
.info-date{font:12px ui-monospace,monospace;color:var(--muted)}
.info-row h3{font-size:16px;margin-bottom:4px}
.info-row p{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.info-arrow{color:var(--lime);font-size:20px}
.empty{padding:55px 25px;text-align:center;color:var(--muted)}
.side-note{border-left:2px solid var(--lime);padding:25px 0 25px 25px;align-self:center}
.side-note h3{font-size:22px;margin-bottom:10px}
.side-note p{color:var(--muted);font-size:14px}
.side-note a{display:inline-block;color:var(--lime);font-size:13px;font-weight:700;margin-top:18px}
.download{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:50px;overflow:hidden;position:relative}
.download-grid{display:grid;grid-template-columns:1fr .8fr;gap:50px;align-items:center}
.download h2{font-size:37px;line-height:1.2;margin:13px 0}
.download p{color:var(--muted);max-width:500px}
.device-row{display:flex;gap:10px;margin:25px 0;color:var(--muted);font-size:12px}
.device{border:1px solid var(--line);padding:8px 12px;border-radius:6px}
.device strong{color:var(--text);display:block;font-size:13px}
.device-art{height:250px;position:relative;display:flex;justify-content:center;align-items:center}
.phone{width:150px;height:245px;border:7px solid #111018;border-radius:23px;background:#3a3545;box-shadow:0 18px 30px #111;transform:rotate(8deg);padding:24px 13px}
.phone:before{content:"";display:block;width:38px;height:4px;border-radius:4px;background:#15131a;margin:-14px auto 25px}
.phone strong{color:var(--lime);font-size:22px}
.phone-line{height:8px;background:#777080;border-radius:3px;margin-top:20px}
.phone-line.short{width:65%;margin-top:10px}
.device-glow{position:absolute;width:220px;height:100px;background:var(--lime);filter:blur(75px);opacity:.18}
.faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px}
.faq-intro p{color:var(--muted);font-size:14px;margin-top:16px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{list-style:none;padding:21px 4px;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;gap:20px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";color:var(--lime);font-size:22px;font-weight:400}
.faq-item[open] summary:after{content:"−"}
.faq-item p{padding:0 35px 21px 4px;color:var(--muted);font-size:14px}
.cta{margin:40px auto 84px;padding:45px 50px;background:var(--lime);color:var(--ink);border-radius:var(--radius);display:flex;justify-content:space-between;align-items:center;gap:25px}
.cta h2{font-size:30px;line-height:1.25}
.cta p{margin-top:6px;color:#4b592d;font-size:14px}
.cta .btn-primary{background:var(--ink);color:var(--lime)}
.cta .btn-primary:hover{background:#302b39}
.site-footer{border-top:1px solid var(--line);padding:42px 0 25px;color:var(--muted)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.footer-brand{color:var(--text);font-size:18px;font-weight:800}
.footer-brand p{color:var(--muted);font-size:13px;font-weight:400;margin-top:12px;max-width:290px}
.footer-col h4{color:var(--text);font-size:13px;margin-bottom:13px}
.footer-col a{display:block;font-size:13px;margin:8px 0;transition:.2s}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{border-top:1px solid var(--line);margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;font-size:12px}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
@media(max-width:1024px){.hero-grid{gap:35px}.quick-grid{grid-template-columns:repeat(2,1fr)}.nav-links a{padding-left:8px;padding-right:8px}.logo{min-width:205px}}
@media(max-width:768px){.container{width:min(100% - 34px,var(--max))}.navbar{height:68px;gap:12px}.logo{min-width:0;flex:1}.logo-text{font-size:14px}.logo-text small{font-size:8px}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 17px 20px;background:var(--ink-2);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:13px}.menu-toggle{display:block}.navbar>.btn{min-height:39px;padding:0 12px;font-size:12px}.hero{padding:58px 0 45px}.hero-grid{grid-template-columns:1fr}.hero h1{font-size:39px;letter-spacing:-1.2px}.hero-art{min-height:300px}.orbit{width:280px;height:280px}.core{inset:68px}.core h2{font-size:25px}.float-tag.one{right:10px}.section{padding:55px 0}.section-head{display:block}.section-head h2{font-size:27px;margin-bottom:8px}.feature-grid,.info-layout,.download-grid,.faq-layout{grid-template-columns:1fr}.feature-main{min-height:325px}.download{padding:32px 24px}.download h2{font-size:30px}.device-art{margin-top:10px}.faq-layout{gap:28px}.cta{display:block;padding:32px 25px;margin-bottom:58px}.cta h2{font-size:25px}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}}
@media(max-width:520px){.hero h1{font-size:32px}.hero-copy{font-size:15px}.hero-meta{gap:16px;flex-wrap:wrap}.quick-grid{grid-template-columns:1fr 1fr}.quick-item{padding:16px;min-height:112px}.quick-item b{font-size:15px;margin-top:18px}.info-row{grid-template-columns:1fr auto;gap:4px 10px;padding:17px}.info-date{grid-column:1}.info-row p{grid-column:1}.info-arrow{grid-column:2;grid-row:1 / span 2}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}}

/* roulang page: article */
:root{
      --ink:#17151d;
      --ink-2:#201d28;
      --panel:#27232f;
      --panel-2:#302b39;
      --lime:#c6f45b;
      --lime-2:#e0ff8a;
      --orange:#ff866b;
      --text:#f5f3f0;
      --muted:#aaa5b2;
      --line:rgba(255,255,255,.12);
      --soft:rgba(255,255,255,.06);
      --radius:18px;
      --radius-sm:10px;
      --shadow:0 20px 60px rgba(0,0,0,.28);
      --max:1180px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:
        radial-gradient(circle at 80% 8%,rgba(198,244,91,.07),transparent 25rem),
        var(--ink);
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      line-height:1.7;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.22;
      background-image:
        linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,black,transparent 70%);
    }
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}

    .site-header{
      position:sticky;
      top:0;
      z-index:30;
      background:rgba(23,21,29,.9);
      border-bottom:1px solid var(--line);
      backdrop-filter:blur(15px);
    }
    .navbar{
      height:78px;
      display:flex;
      align-items:center;
      gap:34px;
    }
    .logo{
      display:flex;
      align-items:center;
      gap:11px;
      min-width:235px;
      font-weight:800;
      letter-spacing:-.5px;
    }
    .logo-mark{
      width:34px;
      height:34px;
      background:var(--lime);
      color:var(--ink);
      display:grid;
      place-items:center;
      border-radius:9px 4px 9px 4px;
      font-weight:900;
      font-size:18px;
    }
    .logo-text{font-size:17px;line-height:1.15}
    .logo-text small{
      display:block;
      color:var(--muted);
      font-size:10px;
      letter-spacing:2px;
      margin-top:3px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:5px;
      flex:1;
    }
    .nav-links a{
      color:var(--muted);
      padding:10px 13px;
      border-radius:8px;
      font-size:14px;
      transition:.2s ease;
    }
    .nav-links a:hover,.nav-links a.active{
      color:var(--lime);
      background:var(--soft);
    }
    .nav-links a.active{position:relative}
    .nav-links a.active:after{
      content:"";
      position:absolute;
      height:2px;
      background:var(--lime);
      bottom:2px;
      left:13px;
      right:13px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:0 21px;
      border:1px solid transparent;
      border-radius:9px;
      font-weight:700;
      font-size:14px;
      transition:.22s ease;
    }
    .btn-primary{background:var(--lime);color:#171a12}
    .btn-primary:hover{
      background:var(--lime-2);
      color:#171a12;
      transform:translateY(-2px);
      box-shadow:0 9px 25px rgba(198,244,91,.2);
    }
    .btn-outline{
      border-color:var(--line);
      color:var(--text);
      background:transparent;
    }
    .btn-outline:hover{
      border-color:var(--lime);
      color:var(--lime);
      transform:translateY(-2px);
    }
    .menu-toggle{
      display:none;
      background:none;
      border:0;
      color:var(--text);
      font-size:24px;
      line-height:1;
    }

    .article-hero{
      position:relative;
      padding:76px 0 64px;
      border-bottom:1px solid var(--line);
      overflow:hidden;
    }
    .article-hero:after{
      content:"C7";
      position:absolute;
      right:4%;
      bottom:-88px;
      color:rgba(198,244,91,.045);
      font-size:300px;
      font-weight:900;
      line-height:1;
      pointer-events:none;
    }
    .breadcrumb{
      position:relative;
      z-index:1;
      display:flex;
      flex-wrap:wrap;
      gap:9px;
      align-items:center;
      color:var(--muted);
      font-size:13px;
      margin-bottom:28px;
    }
    .breadcrumb a:hover{color:var(--lime)}
    .breadcrumb strong{color:var(--text);font-weight:500}
    .crumb-divider{color:#706b79}
    .article-heading{
      position:relative;
      z-index:1;
      width:min(850px,100%);
    }
    .section-kicker,.eyebrow{
      color:var(--lime);
      font:700 12px/1.2 ui-monospace,SFMono-Regular,monospace;
      letter-spacing:2px;
      text-transform:uppercase;
    }
    .article-heading h1{
      font-size:clamp(32px,5vw,58px);
      line-height:1.2;
      letter-spacing:-1.8px;
      margin:18px 0 22px;
      overflow-wrap:anywhere;
    }
    .article-intro{
      max-width:780px;
      color:var(--muted);
      font-size:17px;
      margin:0;
    }
    .article-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px 24px;
      margin-top:29px;
      color:var(--muted);
      font-size:13px;
    }
    .article-meta span{display:inline-flex;align-items:center;gap:7px}
    .article-meta b{color:var(--text);font-weight:600}
    .meta-dot{
      width:6px;
      height:6px;
      border-radius:50%;
      background:var(--lime);
      display:inline-block;
    }

    .article-section{padding:66px 0 86px}
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,820px) 260px;
      gap:68px;
      align-items:start;
      justify-content:center;
    }
    .article-content{
      min-width:0;
      color:#e8e5e3;
      font-size:17px;
      line-height:1.95;
    }
    .article-content > *:first-child{margin-top:0}
    .article-content h2{
      color:var(--text);
      font-size:30px;
      line-height:1.3;
      margin:42px 0 16px;
      letter-spacing:-.6px;
    }
    .article-content h3{
      color:var(--text);
      font-size:22px;
      line-height:1.4;
      margin:32px 0 12px;
    }
    .article-content p{margin:0 0 22px}
    .article-content ul,.article-content ol{
      margin:0 0 24px;
      padding-left:27px;
    }
    .article-content li{margin:7px 0}
    .article-content blockquote{
      margin:30px 0;
      padding:20px 24px;
      border-left:3px solid var(--lime);
      background:var(--panel);
      color:#ded9d7;
      border-radius:0 var(--radius-sm) var(--radius-sm) 0;
    }
    .article-content img{
      width:100%;
      height:auto;
      border-radius:var(--radius-sm);
      border:1px solid var(--line);
      margin:30px 0;
    }
    .article-content table{
      width:100%;
      margin:25px 0;
      border-collapse:collapse;
      background:var(--panel);
      font-size:14px;
    }
    .article-content th,.article-content td{
      padding:12px 15px;
      text-align:left;
      border:1px solid var(--line);
    }
    .article-content th{color:var(--lime);font-weight:700}
    .article-content a{
      color:var(--lime);
      text-decoration:underline;
      text-underline-offset:3px;
    }
    .article-content a:hover{color:var(--lime-2)}
    .empty-state{
      padding:52px 28px;
      background:var(--panel);
      border:1px solid var(--line);
      border-radius:var(--radius);
      text-align:center;
    }
    .empty-state strong{
      display:block;
      font-size:24px;
      margin-bottom:10px;
    }
    .empty-state p{color:var(--muted);margin:0 0 24px}

    .article-aside{
      position:sticky;
      top:108px;
    }
    .aside-card{
      background:var(--panel);
      border:1px solid var(--line);
      border-radius:var(--radius);
      padding:23px;
      margin-bottom:15px;
    }
    .aside-card.accent{
      border-color:rgba(198,244,91,.35);
      background:linear-gradient(145deg,#2d3030,#27232f);
    }
    .aside-card h3{
      margin:0 0 13px;
      font-size:17px;
    }
    .aside-card p{
      margin:0;
      color:var(--muted);
      font-size:13px;
      line-height:1.75;
    }
    .aside-card .btn{width:100%;margin-top:18px}
    .aside-list{list-style:none;padding:0;margin:0}
    .aside-list li{
      border-top:1px solid var(--line);
      padding:11px 0;
      color:var(--muted);
      font-size:13px;
    }
    .aside-list li:first-child{border-top:0;padding-top:0}
    .aside-list a:hover{color:var(--lime)}

    .related-section{
      padding:70px 0;
      background:var(--ink-2);
      border-top:1px solid var(--line);
      border-bottom:1px solid var(--line);
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:end;
      gap:20px;
      margin-bottom:28px;
    }
    .section-head h2{
      font-size:31px;
      line-height:1.25;
      margin:9px 0 0;
      letter-spacing:-.8px;
    }
    .section-head p{
      color:var(--muted);
      font-size:14px;
      max-width:460px;
      margin:0;
    }
    .related-list{
      display:grid;
      grid-template-columns:1.3fr 1fr 1fr;
      gap:14px;
    }
    .related-card{
      display:flex;
      flex-direction:column;
      min-height:205px;
      padding:24px;
      border:1px solid var(--line);
      border-radius:var(--radius-sm);
      background:var(--panel);
      transition:.22s ease;
    }
    .related-card:first-child{
      background:linear-gradient(135deg,#373142,#25212c);
      border-color:rgba(198,244,91,.22);
    }
    .related-card:hover{
      transform:translateY(-4px);
      border-color:var(--lime);
      box-shadow:var(--shadow);
    }
    .tag{
      display:inline-block;
      width:max-content;
      padding:4px 9px;
      border-radius:4px;
      background:rgba(198,244,91,.12);
      color:var(--lime);
      font-size:11px;
      font-weight:700;
    }
    .related-card h3{
      font-size:18px;
      line-height:1.45;
      margin:17px 0 8px;
    }
    .related-card p{
      color:var(--muted);
      font-size:13px;
      line-height:1.7;
      margin:0;
    }
    .related-foot{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-top:auto;
      padding-top:22px;
      color:var(--muted);
      font-size:12px;
    }
    .related-foot a{color:var(--lime);font-weight:700}

    .article-cta{padding:70px 0}
    .cta-box{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
      padding:38px 44px;
      border:1px solid rgba(198,244,91,.28);
      border-radius:var(--radius);
      background:
        linear-gradient(120deg,rgba(198,244,91,.1),transparent 55%),
        var(--panel);
    }
    .cta-box h2{font-size:28px;line-height:1.3;margin:0 0 9px}
    .cta-box p{color:var(--muted);font-size:14px;margin:0;max-width:620px}

    .site-footer{
      padding:56px 0 22px;
      background:#121117;
      border-top:1px solid var(--line);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.55fr 1fr 1fr 1fr;
      gap:35px;
      padding-bottom:40px;
    }
    .footer-brand{
      color:var(--lime);
      font-size:19px;
      font-weight:800;
      margin-bottom:12px;
    }
    .footer-grid p{
      color:var(--muted);
      font-size:13px;
      max-width:310px;
      margin:0;
    }
    .footer-col{display:flex;flex-direction:column;gap:7px}
    .footer-col h4{
      color:var(--text);
      font-size:14px;
      margin:0 0 9px;
    }
    .footer-col a{
      width:max-content;
      color:var(--muted);
      font-size:13px;
      transition:.2s;
    }
    .footer-col a:hover{color:var(--lime);transform:translateX(3px)}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      padding-top:20px;
      border-top:1px solid var(--line);
      color:#77727e;
      font-size:12px;
    }

    @media (max-width:1024px){
      .navbar{gap:18px}
      .logo{min-width:205px}
      .nav-links a{padding-left:9px;padding-right:9px}
      .article-layout{grid-template-columns:minmax(0,1fr) 230px;gap:35px}
      .related-list{grid-template-columns:1fr 1fr}
      .related-card:first-child{grid-column:span 2}
    }
    @media (max-width:768px){
      .container{width:min(var(--max),calc(100% - 34px))}
      .navbar{height:68px}
      .logo{min-width:0;flex:1}
      .logo-text{font-size:15px}
      .logo-mark{width:31px;height:31px;font-size:16px}
      .menu-toggle{display:block}
      .header-download{display:none}
      .nav-links{
        display:none;
        position:absolute;
        top:68px;
        left:0;
        right:0;
        padding:12px 17px 18px;
        flex-direction:column;
        align-items:stretch;
        background:#1a1820;
        border-bottom:1px solid var(--line);
        box-shadow:var(--shadow);
      }
      .nav-links.open{display:flex}
      .nav-links a{padding:12px 14px}
      .article-hero{padding:55px 0 48px}
      .article-hero:after{font-size:200px;bottom:-50px}
      .article-layout{display:block}
      .article-aside{position:static;margin-top:40px}
      .article-content{font-size:16px;line-height:1.85}
      .article-content h2{font-size:26px}
      .section-head{display:block}
      .section-head p{margin-top:13px}
      .related-list{grid-template-columns:1fr}
      .related-card:first-child{grid-column:auto}
      .cta-box{display:block;padding:30px 25px}
      .cta-box .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:25px}
      .footer-grid>div:first-child{grid-column:span 3}
    }
    @media (max-width:520px){
      .container{width:calc(100% - 28px)}
      .article-heading h1{font-size:31px;letter-spacing:-.8px}
      .article-intro{font-size:15px}
      .article-meta{gap:8px 15px}
      .article-section{padding:44px 0 60px}
      .article-content blockquote{padding:16px 18px}
      .related-section,.article-cta{padding:50px 0}
      .section-head h2{font-size:26px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid>div:first-child{grid-column:span 2}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:6px}
    }

/* roulang page: category1 */
:root{
      --ink:#17151d;
      --ink-2:#201d28;
      --panel:#27232f;
      --panel-2:#302b39;
      --lime:#c6f45b;
      --lime-2:#e0ff8a;
      --orange:#ff866b;
      --text:#f5f3f0;
      --muted:#aaa5b2;
      --line:rgba(255,255,255,.12);
      --soft:rgba(255,255,255,.06);
      --radius:18px;
      --radius-sm:10px;
      --shadow:0 20px 60px rgba(0,0,0,.28);
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--ink);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7;overflow-x:hidden}
    body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.22;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,black,transparent 70%)}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(23,21,29,.88);border-bottom:1px solid var(--line);backdrop-filter:blur(15px)}
    .navbar{height:78px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:11px;min-width:235px;font-weight:800;letter-spacing:-.5px}
    .logo-mark{width:34px;height:34px;background:var(--lime);color:var(--ink);display:grid;place-items:center;border-radius:9px 4px 9px 4px;font-weight:900;font-size:18px}
    .logo-text{font-size:17px;line-height:1.15}
    .logo-text small{display:block;color:var(--muted);font-size:10px;letter-spacing:2px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px;flex:1}
    .nav-links a{color:var(--muted);padding:10px 13px;border-radius:8px;font-size:14px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--lime);background:var(--soft)}
    .nav-links a.active{position:relative}
    .nav-links a.active:after{content:"";position:absolute;height:2px;background:var(--lime);bottom:2px;left:13px;right:13px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 21px;border:1px solid transparent;border-radius:9px;font-weight:700;font-size:14px;transition:.22s}
    .btn:focus-visible,.nav-links a:focus-visible,.filter-btn:focus-visible{outline:3px solid rgba(198,244,91,.45);outline-offset:3px}
    .btn-primary{background:var(--lime);color:#171a12}
    .btn-primary:hover{background:var(--lime-2);transform:translateY(-2px);box-shadow:0 9px 25px rgba(198,244,91,.2)}
    .btn-outline{border-color:var(--line);color:var(--text);background:transparent}
    .btn-outline:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:0;color:var(--text);font-size:24px}
    .page-hero{padding:82px 0 68px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
    .page-hero:after{content:"NEWS";position:absolute;right:-25px;bottom:-55px;color:rgba(198,244,91,.045);font:900 190px/1 Arial,sans-serif;letter-spacing:-10px;pointer-events:none}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:27px}
    .breadcrumb a:hover{color:var(--lime)}
    .breadcrumb strong{color:var(--text);font-weight:500}
    .hero-copy{max-width:760px;position:relative;z-index:1}
    .eyebrow,.section-kicker{color:var(--lime);font:700 12px/1.2 ui-monospace,SFMono-Regular,monospace;letter-spacing:2px;text-transform:uppercase}
    h1{font-size:clamp(36px,5vw,66px);line-height:1.1;letter-spacing:-2px;margin:18px 0 22px}
    h1 span{color:var(--lime)}
    .hero-copy p{color:var(--muted);font-size:17px;max-width:700px;margin:0}
    .hero-tools{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:31px}
    .hero-note{color:var(--muted);font-size:12px;margin-left:5px}
    .section{padding:76px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
    .section-head h2{font-size:32px;line-height:1.2;margin:10px 0 0;letter-spacing:-1px}
    .section-head p{color:var(--muted);font-size:14px;max-width:480px;margin:0}
    .filter-bar{display:flex;gap:8px;overflow:auto;padding-bottom:5px;margin-bottom:25px;scrollbar-width:none}
    .filter-bar::-webkit-scrollbar{display:none}
    .filter-btn{white-space:nowrap;border:1px solid var(--line);background:var(--panel);color:var(--muted);padding:9px 15px;border-radius:7px;font-size:13px;transition:.2s}
    .filter-btn:hover,.filter-btn.active{background:var(--lime);border-color:var(--lime);color:var(--ink)}
    .news-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:16px}
    .featured-news{min-height:370px;padding:34px;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(135deg,#3b3444,#25212c);position:relative;overflow:hidden}
    .featured-news:before{content:"C7";position:absolute;right:18px;bottom:-52px;color:rgba(198,244,91,.08);font:900 260px/1 Arial,sans-serif}
    .tag{display:inline-block;padding:4px 9px;border-radius:4px;background:rgba(198,244,91,.12);color:var(--lime);font-size:11px;font-weight:700;position:relative;z-index:1}
    .featured-news h3{font-size:29px;line-height:1.3;max-width:500px;margin:27px 0 13px;position:relative;z-index:1}
    .featured-news p{color:var(--muted);max-width:500px;font-size:14px;position:relative;z-index:1}
    .news-meta{display:flex;gap:15px;color:var(--muted);font-size:12px;position:relative;z-index:1}
    .featured-news .btn{margin-top:26px;position:relative;z-index:1}
    .news-list{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .news-item{display:grid;grid-template-columns:72px 1fr 18px;gap:15px;align-items:center;padding:21px 22px;border-bottom:1px solid var(--line);transition:.2s}
    .news-item:last-child{border-bottom:0}
    .news-item:hover{background:var(--soft)}
    .news-date{color:var(--lime);font:700 12px/1.3 ui-monospace,SFMono-Regular,monospace}
    .news-item h3{font-size:15px;line-height:1.45;margin:0 0 4px}
    .news-item p{font-size:12px;color:var(--muted);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .arrow{color:var(--lime);font-size:19px}
    .topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .topic-card{min-height:145px;padding:22px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);transition:.22s}
    .topic-card:hover{transform:translateY(-4px);border-color:var(--lime);box-shadow:var(--shadow)}
    .topic-icon{color:var(--lime);font:700 20px/1 ui-monospace,SFMono-Regular,monospace}
    .topic-card h3{font-size:17px;margin:22px 0 5px}
    .topic-card p{font-size:12px;color:var(--muted);margin:0}
    .timeline-wrap{display:grid;grid-template-columns:.78fr 1.22fr;gap:42px;align-items:start}
    .timeline-intro{padding:30px;background:var(--lime);color:var(--ink);border-radius:var(--radius)}
    .timeline-intro h2{font-size:28px;line-height:1.25;margin:14px 0}
    .timeline-intro p{font-size:14px;margin:0;color:#4e5a2d}
    .timeline{border-left:1px solid var(--line);padding-left:28px}
    .timeline-entry{position:relative;padding:0 0 28px}
    .timeline-entry:last-child{padding-bottom:0}
    .timeline-entry:before{content:"";position:absolute;width:9px;height:9px;background:var(--lime);border-radius:50%;left:-33px;top:8px;box-shadow:0 0 0 5px var(--ink)}
    .timeline-entry time{font:700 12px ui-monospace,SFMono-Regular,monospace;color:var(--orange)}
    .timeline-entry h3{font-size:18px;margin:7px 0 5px}
    .timeline-entry p{font-size:13px;color:var(--muted);margin:0}
    .app-strip{margin-top:30px;padding:24px 28px;border:1px solid rgba(198,244,91,.25);background:var(--panel);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:space-between;gap:20px}
    .app-strip strong{display:block;font-size:17px}
    .app-strip span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
    .faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px}
    .faq-intro p{color:var(--muted);font-size:14px}
    .faq-list{border-top:1px solid var(--line)}
    details{border-bottom:1px solid var(--line);padding:18px 0}
    summary{cursor:pointer;list-style:none;font-size:16px;font-weight:700;padding-right:30px;position:relative}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:4px;color:var(--lime);font-size:22px;font-weight:400;top:-4px}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;margin:12px 30px 0 0}
    .cta{padding:52px 0;background:var(--panel-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta h2{font-size:30px;margin:0 0 8px}
    .cta p{color:var(--muted);margin:0;font-size:14px}
    .cta-actions{display:flex;gap:10px;flex-wrap:wrap}
    .site-footer{padding:52px 0 25px;background:#121117}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{font-size:20px;font-weight:800;color:var(--lime);margin-bottom:12px}
    .footer-grid p{color:var(--muted);font-size:13px;max-width:290px;margin:0}
    .footer-col{display:flex;flex-direction:column;gap:8px}
    .footer-col h4{font-size:13px;margin:0 0 7px;color:var(--text)}
    .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
    .footer-col a:hover{color:var(--lime);padding-left:3px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:40px;padding-top:18px;color:#797580;font-size:12px}
    @media(max-width:1024px){
      .navbar{gap:15px}.logo{min-width:205px}.nav-links a{padding:9px 8px}
      .news-layout,.timeline-wrap{grid-template-columns:1fr}
      .topic-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .navbar{height:68px}.logo{min-width:0;flex:1}.logo-text{font-size:15px}
      .nav-links{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 16px 18px;background:var(--ink-2);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:12px 14px}
      .menu-toggle{display:block}.navbar>.btn{min-height:38px;padding:0 13px;font-size:12px}
      .page-hero{padding:57px 0 50px}.section{padding:58px 0}
      h1{font-size:clamp(34px,9vw,52px);letter-spacing:-1.5px}
      .section-head{display:block}.section-head p{margin-top:12px}
      .faq-grid{grid-template-columns:1fr;gap:25px}.cta-inner{display:block}.cta-actions{margin-top:22px}
      .footer-grid{grid-template-columns:1.4fr 1fr 1fr}.footer-col:last-child{grid-column:2}
    }
    @media(max-width:520px){
      .logo-mark{width:30px;height:30px;font-size:16px}.logo-text small{font-size:8px}
      .hero-tools .btn{width:100%}.hero-note{margin-left:0}
      .featured-news{padding:25px;min-height:390px}.featured-news h3{font-size:24px}
      .news-item{grid-template-columns:58px 1fr 12px;gap:10px;padding:18px 15px}
      .news-item p{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
      .topic-grid{grid-template-columns:1fr}.app-strip{display:block;padding:21px}
      .app-strip .btn{margin-top:17px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-grid>div:first-child{grid-column:1/-1}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:5px}
    }

/* roulang page: category3 */
:root{
      --ink:#17151d;
      --ink-2:#201d28;
      --panel:#27232f;
      --panel-2:#302b39;
      --lime:#c6f45b;
      --lime-2:#e0ff8a;
      --orange:#ff866b;
      --text:#f5f3f0;
      --muted:#aaa5b2;
      --line:rgba(255,255,255,.12);
      --soft:rgba(255,255,255,.06);
      --radius:18px;
      --radius-sm:10px;
      --shadow:0 20px 60px rgba(0,0,0,.28);
      --max:1180px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--ink);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7;overflow-x:hidden}
    body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.22;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,black,transparent 70%)}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(23,21,29,.9);border-bottom:1px solid var(--line);backdrop-filter:blur(15px)}
    .navbar{height:78px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:11px;min-width:235px;font-weight:800;letter-spacing:-.5px}
    .logo-mark{width:34px;height:34px;background:var(--lime);color:var(--ink);display:grid;place-items:center;border-radius:9px 4px 9px 4px;font-weight:900;font-size:18px}
    .logo-text{font-size:17px;line-height:1.15}
    .logo-text small{display:block;color:var(--muted);font-size:10px;letter-spacing:2px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px;flex:1}
    .nav-links a{color:var(--muted);padding:10px 13px;border-radius:8px;font-size:14px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--lime);background:var(--soft)}
    .nav-links a.active{position:relative}
    .nav-links a.active:after{content:"";position:absolute;height:2px;background:var(--lime);bottom:2px;left:13px;right:13px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 21px;border:1px solid transparent;border-radius:9px;font-weight:700;font-size:14px;transition:.22s}
    .btn-primary{background:var(--lime);color:#171a12}
    .btn-primary:hover{background:var(--lime-2);transform:translateY(-2px);box-shadow:0 9px 25px rgba(198,244,91,.2)}
    .btn-outline{border-color:var(--line);color:var(--text);background:transparent}
    .btn-outline:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:0;color:var(--text);font-size:24px}
    .hero{padding:76px 0 68px;border-bottom:1px solid var(--line)}
    .breadcrumb{color:var(--muted);font-size:12px;margin-bottom:28px}
    .breadcrumb a:hover{color:var(--lime)}
    .guide-hero{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center}
    .eyebrow,.section-kicker{color:var(--lime);font:700 12px/1.2 ui-monospace,SFMono-Regular,monospace;letter-spacing:2px;text-transform:uppercase}
    h1,h2,h3,h4,p{margin-top:0}
    .hero h1{font-size:clamp(36px,5vw,64px);line-height:1.12;letter-spacing:-2px;margin:20px 0}
    .hero h1 span{color:var(--lime)}
    .hero-copy{font-size:17px;color:var(--muted);max-width:650px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
    .guide-board{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .guide-board:before{content:"攻略";position:absolute;right:-15px;top:-30px;font-size:130px;font-weight:900;color:rgba(198,244,91,.06)}
    .board-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:7px}
    .board-top strong{font-size:17px}
    .board-top span{color:var(--lime);font:12px ui-monospace,monospace}
    .board-row{display:flex;align-items:center;gap:14px;padding:17px 0;border-bottom:1px solid var(--line);position:relative;z-index:1}
    .board-row:last-child{border-bottom:0}
    .board-num{width:28px;height:28px;border:1px solid var(--lime);color:var(--lime);border-radius:7px;display:grid;place-items:center;font:700 12px ui-monospace,monospace}
    .board-row b{font-size:14px;display:block}
    .board-row small{color:var(--muted);font-size:11px}
    .section{padding:76px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .section-head h2{font-size:32px;line-height:1.2;margin:10px 0 0;letter-spacing:-1px}
    .section-head p{color:var(--muted);font-size:14px;max-width:500px;margin-bottom:0}
    .topic-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:14px}
    .topic-card{padding:25px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);min-height:178px;transition:.22s;position:relative;overflow:hidden}
    .topic-card:first-child{background:var(--lime);color:var(--ink)}
    .topic-card:hover{transform:translateY(-4px);border-color:var(--lime);box-shadow:0 12px 35px rgba(0,0,0,.18)}
    .topic-card .index{color:var(--orange);font:700 12px ui-monospace,monospace}
    .topic-card:first-child .index{color:#526622}
    .topic-card h3{font-size:20px;margin:27px 0 8px}
    .topic-card p{font-size:13px;color:var(--muted);margin-bottom:0}
    .topic-card:first-child p{color:#4d5b25}
    .guide-layout{display:grid;grid-template-columns:1fr .72fr;gap:18px}
    .guide-list,.notice-card,.faq-list{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .guide-item{display:grid;grid-template-columns:55px 1fr auto;gap:18px;align-items:center;padding:23px 26px;border-bottom:1px solid var(--line);transition:.2s}
    .guide-item:last-child{border-bottom:0}
    .guide-item:hover{background:var(--soft)}
    .guide-item .number{font:700 20px ui-monospace,monospace;color:var(--lime)}
    .guide-item h3{font-size:17px;margin:0 0 5px}
    .guide-item p{font-size:13px;color:var(--muted);margin:0}
    .guide-meta{color:var(--muted);font-size:11px;white-space:nowrap}
    .arrow{color:var(--lime);font-size:20px;margin-left:12px}
    .notice-card{padding:27px}
    .notice-card h3{font-size:22px;line-height:1.3;margin:17px 0 12px}
    .notice-card p{color:var(--muted);font-size:14px}
    .tag{display:inline-block;padding:4px 9px;border-radius:4px;background:rgba(198,244,91,.12);color:var(--lime);font-size:11px;font-weight:700}
    .notice-points{list-style:none;padding:0;margin:22px 0}
    .notice-points li{padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}
    .notice-points li:before{content:"↗";color:var(--lime);margin-right:10px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}
    .step{padding:24px;background:var(--ink-2);border:1px solid var(--line);border-radius:var(--radius-sm)}
    .step strong{display:block;color:var(--lime);font:700 27px ui-monospace,monospace;margin-bottom:17px}
    .step h3{font-size:16px;margin-bottom:7px}
    .step p{color:var(--muted);font-size:13px;margin:0}
    .faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:55px;align-items:start}
    .faq-intro p{color:var(--muted);font-size:15px;margin-top:17px}
    .faq-intro .btn{margin-top:13px}
    details{border-bottom:1px solid var(--line);padding:20px 24px}
    details:last-child{border-bottom:0}
    summary{cursor:pointer;list-style:none;font-size:15px;font-weight:700;position:relative;padding-right:25px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:0;color:var(--lime);font-size:20px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:13px;margin:13px 25px 0 0}
    .cta{padding:52px 0}
    .cta-box{background:var(--panel-2);border:1px solid var(--line);border-left:4px solid var(--lime);border-radius:var(--radius);padding:35px 42px;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta-box h2{font-size:28px;margin:0 0 7px}
    .cta-box p{color:var(--muted);margin:0;font-size:14px}
    .site-footer{padding:55px 0 25px;border-top:1px solid var(--line);background:#141219}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
    .footer-brand{font-size:20px;font-weight:800;margin-bottom:12px}
    .footer-grid p{color:var(--muted);font-size:13px;max-width:280px}
    .footer-col{display:flex;flex-direction:column;gap:8px}
    .footer-col h4{font-size:13px;color:var(--lime);margin:0 0 8px}
    .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
    .footer-col a:hover{color:var(--text);padding-left:3px}
    .footer-bottom{display:flex;justify-content:space-between;gap:15px;color:#77727e;font-size:12px;border-top:1px solid var(--line);margin-top:40px;padding-top:20px}
    :focus-visible{outline:2px solid var(--lime);outline-offset:3px}
    @media(max-width:1024px){
      .navbar{gap:15px}.logo{min-width:210px}.nav-links a{padding:9px 8px}
      .guide-hero{gap:35px}.topic-grid{grid-template-columns:1fr 1fr}.topic-card:first-child{grid-column:span 2}
      .steps{grid-template-columns:1fr 1fr}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .navbar{height:70px}.menu-toggle{display:block;margin-left:auto}
      .nav-links{display:none;position:absolute;top:70px;left:0;right:0;padding:15px 16px;background:var(--ink-2);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:12px 15px}.nav-links a.active:after{display:none}
      .navbar>.btn{display:none}.logo{min-width:0}.logo-text{font-size:15px}
      .hero{padding:53px 0}.guide-hero,.guide-layout,.faq-layout{grid-template-columns:1fr}
      .guide-board{max-width:600px}.section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:14px}
      .cta-box{display:block;padding:30px}.cta-box .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:span 2}
    }
    @media(max-width:520px){
      .hero h1{font-size:38px;letter-spacing:-1px}.hero-copy{font-size:15px}
      .hero-actions .btn{width:100%}.topic-grid{grid-template-columns:1fr}.topic-card:first-child{grid-column:auto}
      .guide-item{grid-template-columns:35px 1fr auto;gap:10px;padding:19px 15px}.guide-item p{font-size:12px}
      .guide-meta{display:none}.steps{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
    }

/* roulang page: category2 */
:root{
      --ink:#17151d;
      --ink-2:#201d28;
      --panel:#27232f;
      --panel-2:#302b39;
      --lime:#c6f45b;
      --lime-2:#e0ff8a;
      --orange:#ff866b;
      --text:#f5f3f0;
      --muted:#aaa5b2;
      --line:rgba(255,255,255,.12);
      --soft:rgba(255,255,255,.06);
      --radius:18px;
      --radius-sm:10px;
      --shadow:0 20px 60px rgba(0,0,0,.28);
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--ink);
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      line-height:1.7;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.22;
      background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,black,transparent 70%);
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:20;
      background:rgba(23,21,29,.9);
      border-bottom:1px solid var(--line);
      backdrop-filter:blur(15px);
    }
    .navbar{height:78px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:11px;min-width:235px;font-weight:800;letter-spacing:-.5px}
    .logo-mark{
      width:34px;height:34px;background:var(--lime);color:var(--ink);
      display:grid;place-items:center;border-radius:9px 4px 9px 4px;
      font-weight:900;font-size:18px;
    }
    .logo-text{font-size:17px;line-height:1.15}
    .logo-text small{display:block;color:var(--muted);font-size:10px;letter-spacing:2px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px;flex:1}
    .nav-links a{
      color:var(--muted);padding:10px 13px;border-radius:8px;font-size:14px;transition:.2s;
    }
    .nav-links a:hover,.nav-links a.active{color:var(--lime);background:var(--soft)}
    .nav-links a.active{position:relative}
    .nav-links a.active:after{
      content:"";position:absolute;height:2px;background:var(--lime);
      bottom:2px;left:13px;right:13px;
    }
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:46px;padding:0 21px;border:1px solid transparent;
      border-radius:9px;font-weight:700;font-size:14px;transition:.22s;
    }
    .btn-primary{background:var(--lime);color:#171a12}
    .btn-primary:hover{background:var(--lime-2);transform:translateY(-2px);box-shadow:0 9px 25px rgba(198,244,91,.2)}
    .btn-outline{border-color:var(--line);color:var(--text);background:transparent}
    .btn-outline:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
    .menu-toggle{
      display:none;background:none;border:0;color:var(--text);font-size:24px;
      width:42px;height:42px;border-radius:8px;
    }
    .menu-toggle:hover{background:var(--soft);color:var(--lime)}
    .hero{
      padding:90px 0 76px;
      position:relative;
      border-bottom:1px solid var(--line);
      background:radial-gradient(circle at 78% 35%,rgba(198,244,91,.1),transparent 32%);
    }
    .hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:74px;align-items:center}
    .eyebrow,.section-kicker{
      color:var(--lime);font:700 12px/1.2 ui-monospace,SFMono-Regular,monospace;
      letter-spacing:2px;text-transform:uppercase;
    }
    .hero h1{
      font-size:clamp(36px,4.5vw,62px);line-height:1.12;
      letter-spacing:-2px;margin:20px 0 22px;max-width:680px;
    }
    .hero h1 span{color:var(--lime)}
    .hero-copy{font-size:17px;color:var(--muted);max-width:620px}
    .hero-actions{display:flex;gap:12px;margin-top:31px;flex-wrap:wrap}
    .hero-meta{display:flex;gap:25px;margin-top:32px;color:var(--muted);font-size:12px}
    .hero-meta strong{display:block;color:var(--text);font-size:14px;margin-bottom:2px}
    .hero-art{min-height:350px;position:relative;display:grid;place-items:center}
    .orbit{
      width:330px;height:330px;border:1px solid rgba(198,244,91,.35);
      border-radius:50%;position:relative;transform:rotate(-20deg);
    }
    .orbit:before,.orbit:after{
      content:"";position:absolute;border:1px solid rgba(255,255,255,.1);
      border-radius:50%;inset:35px;transform:rotate(42deg) scaleX(1.5);
    }
    .orbit:after{inset:72px;transform:rotate(-58deg) scaleX(1.25)}
    .orbit-core{
      position:absolute;inset:84px;background:var(--lime);color:var(--ink);
      display:grid;place-items:center;border-radius:45% 55% 48% 52%;
      font-weight:950;font-size:62px;letter-spacing:-6px;
      box-shadow:0 0 70px rgba(198,244,91,.24);
      transform:rotate(20deg);
    }
    .orbit-dot{position:absolute;width:12px;height:12px;border-radius:50%;background:var(--orange)}
    .orbit-dot.a{top:22px;right:52px}.orbit-dot.b{bottom:36px;left:24px;background:var(--lime-2)}
    .float-tag{
      position:absolute;background:var(--panel-2);border:1px solid var(--line);
      padding:9px 13px;border-radius:8px;font-size:12px;box-shadow:var(--shadow)
    }
    .float-tag.one{top:14px;right:10px;color:var(--lime)}
    .float-tag.two{bottom:24px;left:0;color:var(--orange)}
    .section{padding:78px 0}
    .section-head{
      display:flex;justify-content:space-between;align-items:end;
      gap:20px;margin-bottom:30px;
    }
    .section-head h2{font-size:32px;line-height:1.2;margin-top:10px;letter-spacing:-1px}
    .section-head p{color:var(--muted);font-size:14px;max-width:500px;margin:0}
    .breadcrumb{padding:24px 0 0;color:var(--muted);font-size:13px}
    .breadcrumb a:hover{color:var(--lime)}
    .breadcrumb span{margin:0 8px;color:#686371}
    .filter-bar{
      display:flex;gap:9px;flex-wrap:wrap;padding:16px;
      background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);
      margin-bottom:22px;
    }
    .filter{
      border:1px solid var(--line);background:transparent;color:var(--muted);
      padding:8px 15px;border-radius:7px;font-size:13px;transition:.2s;
    }
    .filter:hover,.filter.active{color:var(--ink);background:var(--lime);border-color:var(--lime)}
    .showcase{
      display:grid;grid-template-columns:1.3fr .7fr;gap:16px;
    }
    .showcase-main{
      min-height:390px;padding:34px;border:1px solid rgba(198,244,91,.28);
      border-radius:var(--radius);position:relative;overflow:hidden;
      background:linear-gradient(135deg,#393344 0%,#25212c 65%);
    }
    .showcase-main:before{
      content:"C7 GAME";position:absolute;right:-18px;bottom:-30px;
      font-size:112px;font-weight:900;letter-spacing:-8px;color:rgba(198,244,91,.07);
    }
    .tag{
      display:inline-block;padding:4px 9px;border-radius:4px;
      background:rgba(198,244,91,.12);color:var(--lime);font-size:11px;font-weight:700;
    }
    .showcase-main h3{font-size:30px;line-height:1.25;max-width:470px;margin:27px 0 13px;position:relative}
    .showcase-main p{color:var(--muted);max-width:510px;position:relative}
    .showcase-main .btn{margin-top:27px;position:relative}
    .showcase-side{display:flex;flex-direction:column;gap:16px}
    .game-card{
      flex:1;padding:24px;background:var(--panel);border:1px solid var(--line);
      border-radius:var(--radius-sm);transition:.22s;position:relative;overflow:hidden;
    }
    .game-card:hover{border-color:var(--lime);transform:translateX(4px);box-shadow:var(--shadow)}
    .game-card:after{
      content:"";position:absolute;width:90px;height:90px;right:-35px;top:-35px;
      border:1px solid rgba(198,244,91,.2);transform:rotate(45deg);
    }
    .game-card h3{font-size:19px;margin:16px 0 6px}
    .game-card p{font-size:13px;color:var(--muted);margin:0 0 12px}
    .game-meta{display:flex;gap:14px;color:#85808c;font-size:11px}
    .game-meta b{color:var(--lime);font-weight:600}
    .path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
    .path-card{padding:25px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);transition:.2s}
    .path-card:hover{transform:translateY(-4px);border-color:var(--lime)}
    .path-number{font:700 24px ui-monospace,SFMono-Regular,monospace;color:var(--lime)}
    .path-card h3{font-size:18px;margin:17px 0 7px}
    .path-card p{color:var(--muted);font-size:13px;margin:0}
    .info-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:17px}
    .info-list{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .info-row{
      display:grid;grid-template-columns:90px 1fr auto;gap:18px;align-items:center;
      padding:20px 24px;border-bottom:1px solid var(--line);transition:.2s;
    }
    .info-row:last-child{border-bottom:0}
    .info-row:hover{background:var(--soft)}
    .info-date{color:var(--muted);font:12px ui-monospace,SFMono-Regular,monospace}
    .info-row h3{font-size:16px;margin:0 0 4px}
    .info-row p{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:0}
    .info-arrow{color:var(--lime);font-size:20px}
    .note-card{padding:28px;background:var(--panel-2);border-radius:var(--radius);border:1px solid var(--line)}
    .note-card h3{font-size:22px;margin:12px 0}
    .note-card p{color:var(--muted);font-size:14px}
    .note-card a{display:inline-block;color:var(--lime);font-size:13px;font-weight:700;margin-top:12px}
    .download{
      background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    }
    .download-grid{display:grid;grid-template-columns:1fr .8fr;gap:50px;align-items:center}
    .download h2{font-size:34px;line-height:1.2;margin:12px 0}
    .download p{color:var(--muted);max-width:550px}
    .device-row{display:flex;gap:10px;margin:24px 0;color:var(--muted);font-size:12px;flex-wrap:wrap}
    .device-row span{padding:8px 11px;border:1px solid var(--line);border-radius:6px}
    .device-panel{
      min-height:245px;border:1px solid rgba(198,244,91,.3);border-radius:var(--radius);
      display:flex;align-items:center;justify-content:center;gap:20px;
      background:radial-gradient(circle at center,rgba(198,244,91,.1),transparent 58%);
    }
    .qr-box{width:116px;height:116px;border:7px solid var(--text);background:repeating-linear-gradient(45deg,#17151d 0 5px,#f5f3f0 5px 9px);display:grid;place-items:center}
    .qr-box span{background:var(--lime);color:var(--ink);font-size:10px;font-weight:800;padding:4px;transform:rotate(-8deg)}
    .device-screen{width:95px;height:170px;border:4px solid #625c69;border-radius:17px;background:#211e29;position:relative}
    .device-screen:before{content:"C7";position:absolute;inset:28px 12px;background:var(--lime);color:var(--ink);display:grid;place-items:center;font-weight:900;font-size:29px;border-radius:10px}
    .faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px}
    .faq-intro p{color:var(--muted);font-size:14px}
    .faq-list{border-top:1px solid var(--line)}
    details{border-bottom:1px solid var(--line);padding:18px 0}
    summary{cursor:pointer;list-style:none;font-size:16px;font-weight:700;padding-right:28px;position:relative}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:3px;color:var(--lime);font-size:22px;font-weight:400}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;margin:12px 25px 0 0}
    .cta{
      padding:54px 0;background:var(--lime);color:var(--ink);
    }
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta h2{font-size:31px;line-height:1.2;margin:0 0 7px}
    .cta p{margin:0;color:#4e5c29}
    .cta .btn{background:var(--ink);color:var(--text)}
    .cta .btn:hover{background:var(--ink-2);transform:translateY(-2px)}
    .site-footer{padding:58px 0 24px;background:#121117}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{font-size:20px;font-weight:800;margin-bottom:12px}
    .footer-grid p{color:var(--muted);font-size:13px;max-width:300px}
    .footer-col{display:flex;flex-direction:column;gap:8px}
    .footer-col h4{font-size:13px;color:var(--lime);margin:0 0 8px}
    .footer-col a{font-size:13px;color:var(--muted);transition:.2s}
    .footer-col a:hover{color:var(--text);transform:translateX(3px)}
    .footer-bottom{
      display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);
      margin-top:42px;padding-top:19px;color:#77727f;font-size:12px;
    }
    :focus-visible{outline:3px solid var(--orange);outline-offset:3px}
    @media(max-width:1024px){
      .navbar{gap:15px}.logo{min-width:205px}
      .nav-links a{padding-left:9px;padding-right:9px}
      .hero-grid,.showcase,.info-layout,.download-grid{gap:30px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 34px))}
      .navbar{height:70px}
      .logo{min-width:0;flex:1}.logo-text{font-size:15px}
      .logo-text small{font-size:9px}
      .nav-links{
        display:none;position:absolute;top:70px;left:0;right:0;
        padding:12px 17px 18px;background:#1b1921;border-bottom:1px solid var(--line);
        flex-direction:column;align-items:stretch;box-shadow:var(--shadow);
      }
      .nav-links.open{display:flex}
      .nav-links a{padding:13px 14px}
      .menu-toggle{display:block}
      .navbar>.btn-primary{min-height:40px;padding:0 13px;font-size:12px}
      .hero{padding:58px 0 52px}
      .hero-grid,.showcase,.info-layout,.download-grid,.faq-layout{grid-template-columns:1fr}
      .hero-art{min-height:285px;order:-1}
      .orbit{width:250px;height:250px}.orbit-core{inset:64px;font-size:48px}
      .hero h1{font-size:41px;letter-spacing:-1.4px}
      .hero-copy{font-size:15px}
      .section{padding:58px 0}
      .section-head{display:block;margin-bottom:22px}
      .section-head h2{font-size:28px}
      .section-head p{margin-top:10px}
      .path-grid{grid-template-columns:1fr}
      .showcase-main{min-height:340px}
      .download h2{font-size:29px}
      .faq-layout{gap:30px}
      .cta-inner{display:block}.cta .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
      .footer-grid>div:first-child{grid-column:1/-1}
    }
    @media(max-width:520px){
      .navbar>.btn-primary{display:none}
      .logo-text{font-size:14px}
      .hero h1{font-size:35px}
      .hero-meta{gap:16px;flex-wrap:wrap}
      .hero-actions .btn{width:100%}
      .section-head h2{font-size:25px}
      .showcase-main{padding:25px;min-height:355px}
      .showcase-main h3{font-size:25px}
      .info-row{grid-template-columns:1fr auto;gap:5px 12px;padding:17px}
      .info-date{grid-column:1/-1}
      .info-row p{white-space:normal}
      .device-panel{min-height:220px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
    }

/* roulang page: category4 */
:root{
      --ink:#17151d;
      --ink-2:#201d28;
      --panel:#27232f;
      --panel-2:#302b39;
      --lime:#c6f45b;
      --lime-2:#e0ff8a;
      --orange:#ff866b;
      --text:#f5f3f0;
      --muted:#aaa5b2;
      --line:rgba(255,255,255,.12);
      --soft:rgba(255,255,255,.06);
      --radius:18px;
      --radius-sm:10px;
      --shadow:0 20px 60px rgba(0,0,0,.28);
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--ink);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7;overflow-x:hidden}
    body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.22;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,black,transparent 70%)}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(23,21,29,.9);border-bottom:1px solid var(--line);backdrop-filter:blur(15px)}
    .navbar{height:78px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:11px;min-width:235px;font-weight:800;letter-spacing:-.5px}
    .logo-mark{width:34px;height:34px;background:var(--lime);color:var(--ink);display:grid;place-items:center;border-radius:9px 4px 9px 4px;font-weight:900;font-size:18px}
    .logo-text{font-size:17px;line-height:1.15}
    .logo-text small{display:block;color:var(--muted);font-size:10px;letter-spacing:2px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px;flex:1}
    .nav-links a{color:var(--muted);padding:10px 13px;border-radius:8px;font-size:14px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--lime);background:var(--soft)}
    .nav-links a.active{position:relative}
    .nav-links a.active:after{content:"";position:absolute;height:2px;background:var(--lime);bottom:2px;left:13px;right:13px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 21px;border:1px solid transparent;border-radius:9px;font-weight:700;font-size:14px;transition:.22s}
    .btn:focus,.nav-links a:focus-visible,summary:focus-visible{outline:3px solid rgba(198,244,91,.45);outline-offset:3px}
    .btn-primary{background:var(--lime);color:#171a12}
    .btn-primary:hover{background:var(--lime-2);transform:translateY(-2px);box-shadow:0 9px 25px rgba(198,244,91,.2)}
    .btn-outline{border-color:var(--line);color:var(--text);background:transparent}
    .btn-outline:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:0;color:var(--text);font-size:24px}
    .breadcrumb{padding-top:34px;color:var(--muted);font-size:13px}
    .breadcrumb a{color:var(--lime)}
    .hero{padding:62px 0 80px;position:relative}
    .hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
    .eyebrow,.section-kicker{color:var(--lime);font:700 12px/1.2 ui-monospace,SFMono-Regular,monospace;letter-spacing:2px;text-transform:uppercase}
    .hero h1{font-size:clamp(36px,4.8vw,64px);line-height:1.12;letter-spacing:-2px;margin:20px 0 23px;max-width:630px}
    .hero h1 span{color:var(--lime)}
    .hero-copy{font-size:17px;color:var(--muted);max-width:570px}
    .hero-actions{display:flex;gap:12px;margin-top:31px;flex-wrap:wrap}
    .hero-meta{display:flex;gap:28px;margin-top:32px;color:var(--muted);font-size:12px;flex-wrap:wrap}
    .hero-meta strong{display:block;color:var(--text);font-size:14px;margin-bottom:2px}
    .device-stage{height:430px;position:relative;display:flex;align-items:center;justify-content:center}
    .device-stage:before{content:"";position:absolute;width:350px;height:350px;border:1px solid rgba(198,244,91,.22);border-radius:50%;box-shadow:0 0 0 34px rgba(198,244,91,.035),0 0 0 70px rgba(198,244,91,.025)}
    .phone{position:relative;width:190px;height:370px;background:#111016;border:7px solid #484250;border-radius:30px;padding:14px;box-shadow:var(--shadow);transform:rotate(5deg);z-index:2}
    .phone:before{content:"";display:block;width:54px;height:5px;background:#514d59;border-radius:8px;margin:0 auto 17px}
    .phone-screen{height:310px;border-radius:15px;background:linear-gradient(145deg,#3b3545 0%,#211e28 48%,#b0dc4d 49%,#25232d 50%);padding:18px 13px;overflow:hidden}
    .screen-brand{font-weight:900;font-size:19px;margin-bottom:28px}
    .screen-brand i{color:var(--lime);font-style:normal}
    .screen-line{height:8px;background:rgba(255,255,255,.16);border-radius:4px;margin:10px 0}
    .screen-line.short{width:62%}
    .screen-tile{height:68px;margin-top:20px;border-radius:9px;background:rgba(198,244,91,.18);border:1px solid rgba(198,244,91,.5)}
    .device-note{position:absolute;right:5px;top:68px;background:var(--panel-2);border:1px solid var(--line);padding:12px 15px;border-radius:9px;color:var(--lime);font-size:12px;z-index:3}
    .device-note.bottom{top:auto;right:auto;left:12px;bottom:55px;color:var(--orange)}
    .section{padding:78px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .section-head h2{font-size:32px;line-height:1.2;margin:10px 0 0;letter-spacing:-1px}
    .section-head p{color:var(--muted);font-size:14px;max-width:480px;margin:0}
    .download-options{display:grid;grid-template-columns:1.15fr .85fr;gap:16px}
    .download-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:32px;min-height:250px;transition:.22s}
    .download-card:hover{border-color:rgba(198,244,91,.6);transform:translateY(-4px);box-shadow:var(--shadow)}
    .download-card.featured{background:var(--lime);color:var(--ink)}
    .download-card h3{font-size:25px;margin:18px 0 9px}
    .download-card p{color:var(--muted);font-size:14px;max-width:480px}
    .featured p{color:#4e5d29}
    .tag{display:inline-block;padding:4px 9px;border-radius:4px;background:rgba(198,244,91,.12);color:var(--lime);font-size:11px;font-weight:700}
    .featured .tag{background:rgba(23,21,29,.12);color:var(--ink)}
    .card-foot{display:flex;align-items:center;gap:16px;margin-top:24px;flex-wrap:wrap}
    .device-label{font-size:12px;color:var(--muted)}
    .featured .device-label{color:#53612d}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .step{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);padding:25px;min-height:190px}
    .step-number{color:var(--lime);font:700 30px/1 ui-monospace,SFMono-Regular,monospace}
    .step h3{font-size:18px;margin:22px 0 8px}
    .step p{color:var(--muted);font-size:13px;margin:0}
    .info-panel{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .update-box,.qr-box{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
    .update-box h3,.qr-box h3{font-size:22px;margin:13px 0}
    .update-box p,.qr-box p{color:var(--muted);font-size:14px}
    .status-list{margin:20px 0 0;padding:0;list-style:none}
    .status-list li{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:12px 0;color:var(--muted);font-size:13px}
    .status-list b{color:var(--text);font-weight:600}
    .qr-layout{display:flex;align-items:center;gap:25px}
    .qr-code{width:112px;height:112px;flex:none;background-color:#f5f3f0;background-image:linear-gradient(90deg,#17151d 14%,transparent 14%,transparent 28%,#17151d 28%,#17151d 38%,transparent 38%,transparent 55%,#17151d 55%,#17151d 68%,transparent 68%),linear-gradient(#17151d 14%,transparent 14%,transparent 28%,#17151d 28%,#17151d 39%,transparent 39%,transparent 58%,#17151d 58%,#17151d 73%,transparent 73%);background-size:29px 29px;padding:10px;border:8px solid #f5f3f0}
    .faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px}
    .faq-intro p{color:var(--muted);font-size:14px}
    .faq-list{border-top:1px solid var(--line)}
    details{border-bottom:1px solid var(--line);padding:17px 0}
    summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:20px}
    summary:after{content:"+";color:var(--lime);font-size:22px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;margin:13px 28px 3px 0}
    .cta{padding:54px 0;margin-top:10px}
    .cta-box{background:var(--panel-2);border:1px solid rgba(198,244,91,.3);border-radius:var(--radius);padding:42px 48px;display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta-box h2{font-size:30px;margin:9px 0}
    .cta-box p{color:var(--muted);margin:0}
    .site-footer{padding:62px 0 25px;border-top:1px solid var(--line);background:#141219}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{font-size:20px;font-weight:800;margin-bottom:12px}
    .footer-grid p{color:var(--muted);font-size:13px;max-width:290px}
    .footer-col{display:flex;flex-direction:column;gap:9px}
    .footer-col h4{font-size:13px;color:var(--lime);margin:0 0 7px}
    .footer-col a{color:var(--muted);font-size:13px;transition:.2s}
    .footer-col a:hover{color:var(--lime);padding-left:3px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:40px;padding-top:19px;color:#77727e;font-size:12px}
    @media (max-width:1024px){
      .navbar{gap:16px}.logo{min-width:205px}.nav-links a{padding:9px 8px}
      .hero-grid{gap:35px}.download-options{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .navbar{height:70px}.logo{min-width:0;flex:1}.logo-text{font-size:15px}.logo-text small{font-size:8px}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:70px;padding:12px;background:var(--ink-2);border:1px solid var(--line);border-radius:12px;flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:12px 15px}.menu-toggle{display:block}
      .navbar>.btn{min-height:39px;padding:0 12px;font-size:12px}
      .hero{padding:48px 0 55px}.hero-grid,.download-options,.info-panel,.faq-layout{grid-template-columns:1fr}
      .device-stage{height:380px;order:-1}.hero h1{font-size:42px}
      .section{padding:55px 0}.section-head{display:block}.section-head p{margin-top:14px}
      .steps{grid-template-columns:1fr}.cta-box{display:block;padding:32px 25px}.cta-box .btn{margin-top:23px}
      .footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}
    }
    @media (max-width:520px){
      .hero h1{font-size:35px;letter-spacing:-1px}.hero-copy{font-size:15px}
      .hero-meta{gap:15px}.device-stage{transform:scale(.88);margin:-20px 0}
      .download-card,.update-box,.qr-box{padding:24px}.qr-layout{align-items:flex-start;flex-direction:column}
      .footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}