/* roulang page: index */
:root{
      --bg:#07111F;
      --bg-2:#0A1020;
      --bg-3:#15142F;
      --panel:rgba(255,255,255,.06);
      --panel-2:rgba(255,255,255,.08);
      --panel-3:rgba(255,255,255,.11);
      --text:#F5F7FB;
      --muted:#A8B3C7;
      --soft:#6F7B91;
      --line:rgba(255,255,255,.12);
      --line-strong:rgba(40,215,255,.38);
      --primary:#28D7FF;
      --primary-2:#8B5CF6;
      --accent:#F2A7C6;
      --warn:#F6C76E;
      --good:#36D6A9;
      --shadow:0 20px 60px rgba(0,0,0,.32);
      --shadow-glow:0 0 0 1px rgba(40,215,255,.14), 0 18px 42px rgba(40,215,255,.10), 0 0 40px rgba(139,92,246,.10);
      --r-lg:32px;
      --r-md:24px;
      --r-sm:16px;
      --nav-w:108px;
      --container:1260px;
      --gap:24px;
      --gap-lg:36px;
      --section:84px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 15% 15%, rgba(139,92,246,.18), transparent 24%),
        radial-gradient(circle at 82% 20%, rgba(40,215,255,.14), transparent 22%),
        radial-gradient(circle at 65% 82%, rgba(242,167,198,.10), transparent 24%),
        linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
      min-height:100vh;
      line-height:1.8;
      letter-spacing:.2px;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.024) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.65), rgba(0,0,0,.18) 70%, rgba(0,0,0,0));
      opacity:.55;
      z-index:-1;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{
      border:0;
      cursor:pointer;
      color:inherit;
      background:none;
    }
    ::selection{background:rgba(40,215,255,.28);color:#fff}
    :focus-visible{
      outline:2px solid rgba(40,215,255,.95);
      outline-offset:3px;
      box-shadow:0 0 0 4px rgba(40,215,255,.12);
    }

    .shell{
      display:flex;
      min-height:100vh;
    }

    .side{
      position:fixed;
      inset:0 auto 0 0;
      width:var(--nav-w);
      padding:18px 14px 16px;
      z-index:30;
      background:linear-gradient(180deg, rgba(7,17,31,.82), rgba(7,17,31,.62));
      border-right:1px solid rgba(255,255,255,.08);
      backdrop-filter:blur(18px);
      display:flex;
      flex-direction:column;
      align-items:center;
      gap:16px;
    }

    .brand-badge{
      width:78px;
      min-height:78px;
      border-radius:24px;
      background:
        radial-gradient(circle at 30% 28%, rgba(255,255,255,.34), transparent 34%),
        linear-gradient(135deg, rgba(40,215,255,.22), rgba(139,92,246,.26));
      border:1px solid rgba(255,255,255,.14);
      box-shadow:var(--shadow-glow);
      display:flex;
      align-items:center;
      justify-content:center;
      padding:10px 12px;
      text-align:center;
      line-height:1.12;
      font-weight:800;
      letter-spacing:.6px;
      color:#fff;
      font-size:13px;
    }
    .brand-badge span{
      display:block;
      font-size:11px;
      color:rgba(255,255,255,.78);
      font-weight:600;
      letter-spacing:.2px;
      margin-top:4px;
    }

    .side-nav{
      display:flex;
      flex-direction:column;
      gap:10px;
      width:100%;
      margin-top:6px;
      align-items:center;
    }
    .nav-link{
      width:100%;
      min-height:74px;
      border-radius:22px;
      padding:12px 8px 10px;
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:6px;
      color:var(--muted);
      background:transparent;
      border:1px solid transparent;
      transition:transform .28s var(--ease), background .28s var(--ease), border-color .28s var(--ease), box-shadow .28s var(--ease), color .28s var(--ease);
      position:relative;
    }
    .nav-link .ico{
      width:34px;height:34px;
      display:grid;place-items:center;
      border-radius:12px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:var(--text);
      font-size:16px;
      transition:inherit;
    }
    .nav-link span{
      font-size:12px;
      font-weight:700;
      letter-spacing:.3px;
    }
    .nav-link:hover{
      transform:translateY(-2px);
      color:#fff;
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.12);
      box-shadow:0 10px 28px rgba(0,0,0,.22);
    }
    .nav-link:hover .ico{
      background:linear-gradient(135deg, rgba(40,215,255,.22), rgba(139,92,246,.22));
      border-color:rgba(40,215,255,.25);
    }
    .nav-link.active{
      color:#fff;
      background:linear-gradient(180deg, rgba(40,215,255,.16), rgba(139,92,246,.12));
      border-color:rgba(40,215,255,.28);
      box-shadow:var(--shadow-glow);
    }
    .nav-link.active::before{
      content:"";
      position:absolute;
      left:-14px;
      top:18px;
      bottom:18px;
      width:3px;
      border-radius:999px;
      background:linear-gradient(180deg, var(--primary), var(--primary-2));
      box-shadow:0 0 16px rgba(40,215,255,.45);
    }
    .nav-link.active .ico{
      background:linear-gradient(135deg, rgba(40,215,255,.26), rgba(139,92,246,.26));
      border-color:rgba(255,255,255,.18);
    }
    .side-utility{
      margin-top:auto;
      width:100%;
      padding-top:14px;
      display:flex;
      flex-direction:column;
      align-items:center;
      gap:10px;
    }
    .age-pill{
      width:100%;
      border-radius:18px;
      padding:10px 10px 11px;
      background:rgba(246,199,110,.10);
      border:1px solid rgba(246,199,110,.28);
      color:#FFE7B6;
      text-align:center;
      font-size:11px;
      line-height:1.4;
    }
    .age-pill strong{
      display:block;
      font-size:12px;
      color:#fff2cf;
      margin-bottom:2px;
    }
    .privacy-dot{
      width:38px;
      height:38px;
      border-radius:50%;
      display:grid;
      place-items:center;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.05);
      color:var(--warn);
      box-shadow:0 0 0 6px rgba(246,199,110,.05);
    }

    .content{
      width:100%;
      margin-left:var(--nav-w);
      position:relative;
    }
    .wrap{
      width:min(var(--container), calc(100% - 48px));
      margin:0 auto;
    }

    .topbar{
      display:none;
      position:sticky;
      top:0;
      z-index:25;
      background:linear-gradient(180deg, rgba(7,17,31,.86), rgba(7,17,31,.64));
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .topbar-inner{
      width:min(var(--container), calc(100% - 24px));
      margin:0 auto;
      min-height:72px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:10px 0;
    }
    .top-left{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .top-brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:0;
    }
    .top-logo{
      width:44px;height:44px;
      border-radius:16px;
      background:
        radial-gradient(circle at 28% 24%, rgba(255,255,255,.34), transparent 33%),
        linear-gradient(135deg, rgba(40,215,255,.24), rgba(139,92,246,.28));
      border:1px solid rgba(255,255,255,.14);
      box-shadow:var(--shadow-glow);
      display:grid;
      place-items:center;
      font-weight:800;
      font-size:12px;
      line-height:1.1;
      text-align:center;
    }
    .top-brand-text{
      display:flex;
      flex-direction:column;
      min-width:0;
    }
    .top-brand-text strong{
      font-size:14px;
      line-height:1.2;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .top-brand-text span{
      font-size:12px;
      color:var(--muted);
    }
    .top-actions{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .menu-btn{
      width:46px;height:46px;
      border-radius:16px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.05);
      color:#fff;
      display:grid;
      place-items:center;
      box-shadow:0 12px 30px rgba(0,0,0,.18);
    }
    .cta-mini{
      height:46px;
      padding:0 16px;
      border-radius:16px;
      background:linear-gradient(135deg, var(--primary), var(--primary-2));
      color:#fff;
      font-weight:700;
      box-shadow:0 14px 30px rgba(40,215,255,.18);
      display:inline-flex;
      align-items:center;
      gap:8px;
    }

    .drawer-backdrop{
      position:fixed;
      inset:0;
      background:rgba(3,8,18,.68);
      opacity:0;
      pointer-events:none;
      transition:opacity .28s var(--ease);
      z-index:40;
    }
    .drawer{
      position:fixed;
      inset:0 0 0 auto;
      width:min(88vw, 360px);
      background:linear-gradient(180deg, rgba(10,16,32,.96), rgba(7,17,31,.96));
      backdrop-filter:blur(18px);
      border-left:1px solid rgba(255,255,255,.08);
      transform:translateX(102%);
      transition:transform .32s var(--ease);
      z-index:41;
      display:flex;
      flex-direction:column;
      padding:18px;
      gap:16px;
    }
    .drawer.open{transform:translateX(0)}
    .drawer-backdrop.open{
      opacity:1;
      pointer-events:auto;
    }
    .drawer-head{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
    }
    .drawer-brand{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .drawer-brand .top-logo{width:42px;height:42px}
    .drawer-close{
      width:44px;height:44px;
      border-radius:14px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.12);
      color:#fff;
    }
    .drawer-nav{
      display:grid;
      gap:12px;
      margin-top:4px;
    }
    .drawer-nav a{
      min-height:58px;
      border-radius:18px;
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.05);
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:0 16px;
      color:#fff;
      font-weight:700;
    }
    .drawer-nav a.active{
      background:linear-gradient(135deg, rgba(40,215,255,.15), rgba(139,92,246,.14));
      border-color:rgba(40,215,255,.26);
      box-shadow:var(--shadow-glow);
    }
    .drawer-foot{
      margin-top:auto;
      border-top:1px solid rgba(255,255,255,.08);
      padding-top:14px;
      color:var(--muted);
      font-size:13px;
    }

    .hero{
      padding:34px 0 0;
    }
    .hero-card{
      position:relative;
      overflow:hidden;
      border-radius:34px;
      padding:36px;
      background:
        radial-gradient(circle at 82% 10%, rgba(139,92,246,.18), transparent 20%),
        radial-gradient(circle at 88% 28%, rgba(40,215,255,.14), transparent 18%),
        linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.05));
      border:1px solid rgba(255,255,255,.12);
      box-shadow:var(--shadow);
      backdrop-filter:blur(22px);
    }
    .hero-card::after{
      content:"";
      position:absolute;
      inset:auto -8% -38% auto;
      width:340px;
      height:340px;
      background:radial-gradient(circle, rgba(40,215,255,.16), transparent 66%);
      filter:blur(10px);
      pointer-events:none;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);
      gap:28px;
      align-items:center;
      position:relative;
      z-index:1;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      color:var(--muted);
      font-size:13px;
      font-weight:700;
      letter-spacing:.25px;
      margin-bottom:16px;
    }
    .dot{
      width:8px;height:8px;border-radius:50%;
      background:var(--warn);
      box-shadow:0 0 0 4px rgba(246,199,110,.12);
    }
    h1{
      margin:0;
      font-size:clamp(34px, 5vw, 62px);
      line-height:1.14;
      letter-spacing:-.8px;
      max-width:11.5em;
    }
    .hero p{
      margin:18px 0 0;
      max-width:34em;
      font-size:16px;
      line-height:1.82;
      color:var(--muted);
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }
    .btn{
      min-height:50px;
      padding:0 20px;
      border-radius:999px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      font-weight:700;
      transition:transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), opacity .22s var(--ease);
      user-select:none;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0) scale(.98)}
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow:0 14px 30px rgba(40,215,255,.18), 0 10px 24px rgba(139,92,246,.12);
    }
    .btn-primary:hover{
      box-shadow:0 18px 36px rgba(40,215,255,.24), 0 12px 28px rgba(139,92,246,.16);
    }
    .btn-secondary{
      color:#fff;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.12);
      box-shadow:0 14px 34px rgba(0,0,0,.12);
    }
    .btn-secondary:hover{
      background:rgba(255,255,255,.09);
      border-color:rgba(40,215,255,.24);
    }
    .meta-strip{
      margin-top:18px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      color:var(--soft);
      font-size:12px;
    }
    .meta-item{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
    }
    .meta-item.warn{
      color:#FFE0A3;
      border-color:rgba(246,199,110,.24);
      background:rgba(246,199,110,.08);
    }
    .cover-phone{
      position:relative;
      width:min(100%, 392px);
      aspect-ratio:9 / 16;
      margin-left:auto;
      border-radius:34px;
      padding:14px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.04)),
        linear-gradient(180deg, rgba(10,16,32,.95), rgba(7,17,31,.88));
      border:1px solid rgba(255,255,255,.12);
      box-shadow:var(--shadow-glow);
      overflow:hidden;
    }
    .cover-phone::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 50% 22%, rgba(40,215,255,.20), transparent 20%),
        radial-gradient(circle at 52% 42%, rgba(139,92,246,.22), transparent 26%),
        radial-gradient(circle at 48% 68%, rgba(242,167,198,.12), transparent 18%),
        linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0));
      pointer-events:none;
    }
    .screen{
      position:relative;
      height:100%;
      border-radius:26px;
      overflow:hidden;
      background:
        linear-gradient(160deg, rgba(7,17,31,.22), rgba(7,17,31,.74)),
        radial-gradient(circle at 42% 26%, rgba(255,255,255,.20), transparent 20%),
        linear-gradient(180deg, #16203e 0%, #0c1528 48%, #07111f 100%);
      border:1px solid rgba(255,255,255,.08);
    }
    .screen::after{
      content:"";
      position:absolute;
      inset:auto 0 0;
      height:38%;
      background:linear-gradient(180deg, transparent, rgba(3,7,15,.72));
    }
    .screen-top{
      position:absolute;
      inset:14px 14px auto;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      z-index:1;
    }
    .chip{
      padding:7px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
      color:#fff;
      font-size:12px;
      font-weight:700;
      backdrop-filter:blur(14px);
    }
    .chip.hot{
      background:rgba(40,215,255,.12);
      border-color:rgba(40,215,255,.24);
      color:#D7FAFF;
    }
    .screen-portrait{
      position:absolute;
      inset:0;
      display:grid;
      place-items:center;
      color:rgba(255,255,255,.92);
    }
    .silhouette{
      width:62%;
      height:68%;
      border-radius:38% 38% 28% 28% / 34% 34% 26% 26%;
      background:
        radial-gradient(circle at 50% 20%, rgba(255,255,255,.18), transparent 20%),
        linear-gradient(180deg, rgba(255,255,255,.16), rgba(255,255,255,.04));
      filter:blur(.2px);
      opacity:.85;
      position:relative;
      box-shadow:0 0 50px rgba(40,215,255,.12);
    }
    .silhouette::before{
      content:"";
      position:absolute;
      inset:10% 17% auto;
      height:22%;
      border-radius:50%;
      background:rgba(255,255,255,.16);
      filter:blur(4px);
    }
    .play{
      position:absolute;
      inset:50% auto auto 50%;
      transform:translate(-50%,-50%);
      width:72px;height:72px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.16);
      box-shadow:0 0 0 10px rgba(255,255,255,.04), 0 20px 40px rgba(0,0,0,.2);
      z-index:2;
      backdrop-filter:blur(10px);
      font-size:22px;
      color:#fff;
    }
    .float-tag{
      position:absolute;
      right:14px;
      top:84px;
      display:grid;
      gap:10px;
      z-index:2;
    }
    .float-tag span{
      padding:9px 10px;
      border-radius:16px;
      background:rgba(7,17,31,.56);
      border:1px solid rgba(255,255,255,.10);
      font-size:12px;
      color:#fff;
      backdrop-filter:blur(10px);
      box-shadow:0 10px 22px rgba(0,0,0,.18);
    }
    .float-tag span b{color:#CFF7FF}
    .screen-bottom{
      position:absolute;
      inset:auto 14px 14px;
      z-index:2;
      display:grid;
      gap:10px;
    }
    .screen-bottom .title{
      font-size:16px;
      font-weight:800;
      line-height:1.35;
      max-width:12em;
      text-shadow:0 4px 18px rgba(0,0,0,.35);
    }
    .progress{
      height:6px;
      border-radius:999px;
      overflow:hidden;
      background:rgba(255,255,255,.14);
    }
    .progress span{
      display:block;
      width:68%;
      height:100%;
      background:linear-gradient(90deg, var(--primary), var(--primary-2));
      box-shadow:0 0 18px rgba(40,215,255,.28);
    }
    .screen-foot{
      display:flex;
      justify-content:space-between;
      gap:10px;
      color:rgba(255,255,255,.78);
      font-size:12px;
    }

    .tags-row{
      margin-top:22px;
      display:flex;
      gap:10px;
      overflow:auto;
      padding-bottom:4px;
      scrollbar-width:none;
    }
    .tags-row::-webkit-scrollbar{display:none}
    .tag{
      flex:0 0 auto;
      padding:9px 14px;
      border-radius:999px;
      color:var(--muted);
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      transition:all .22s var(--ease);
      font-size:13px;
      font-weight:700;
      white-space:nowrap;
    }
    .tag:hover{
      color:#fff;
      border-color:rgba(40,215,255,.24);
      background:rgba(40,215,255,.08);
      transform:translateY(-1px);
    }

    .section{
      padding:var(--section) 0 0;
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:end;
      gap:18px;
      margin-bottom:20px;
    }
    .section h2{
      margin:0;
      font-size:clamp(26px, 3vw, 40px);
      line-height:1.2;
      letter-spacing:-.4px;
    }
    .section .sub{
      margin:8px 0 0;
      max-width:48em;
      color:var(--muted);
      font-size:15px;
    }
    .section-label{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      color:var(--muted);
      font-size:12px;
      font-weight:700;
      white-space:nowrap;
    }
    .section-label i{
      width:8px;height:8px;border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 4px rgba(40,215,255,.12);
      display:inline-block;
    }

    .feature-row{
      display:grid;
      grid-template-columns:1.22fr .78fr;
      gap:22px;
      align-items:stretch;
    }
    .feature-scroll{
      display:grid;
      grid-template-columns:repeat(4, minmax(0, 1fr));
      gap:16px;
    }
    .feature-big{
      grid-row:span 2;
      min-height:420px;
    }
    .card{
      position:relative;
      overflow:hidden;
      border-radius:30px;
      background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.05));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:0 14px 38px rgba(0,0,0,.18);
      backdrop-filter:blur(20px);
      transition:transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease), filter .25s var(--ease);
    }
    .card:hover{
      transform:translateY(-6px);
      border-color:rgba(40,215,255,.26);
      box-shadow:0 22px 48px rgba(0,0,0,.22), 0 0 0 1px rgba(40,215,255,.10), 0 0 34px rgba(40,215,255,.10);
    }
    .card-body{
      position:relative;
      z-index:1;
      padding:18px;
    }
    .thumb{
      position:relative;
      min-height:160px;
      border-radius:24px;
      overflow:hidden;
      background:
        radial-gradient(circle at 30% 20%, rgba(255,255,255,.18), transparent 24%),
        radial-gradient(circle at 72% 32%, rgba(40,215,255,.16), transparent 22%),
        linear-gradient(160deg, rgba(139,92,246,.28), rgba(7,17,31,.92));
      border:1px solid rgba(255,255,255,.08);
    }
    .thumb::before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, transparent, rgba(0,0,0,.42));
    }
    .thumb::after{
      content:"";
      position:absolute;
      width:52%;
      aspect-ratio:1;
      border-radius:50%;
      right:-10%;
      bottom:-18%;
      background:radial-gradient(circle, rgba(255,255,255,.18), transparent 66%);
      filter:blur(8px);
    }
    .badge-row{
      position:absolute;
      left:16px;
      top:16px;
      display:flex;
      gap:8px;
      flex-wrap:wrap;
      z-index:1;
    }
    .badge{
      padding:7px 10px;
      border-radius:999px;
      font-size:12px;
      font-weight:700;
      color:#fff;
      background:rgba(7,17,31,.62);
      border:1px solid rgba(255,255,255,.12);
      backdrop-filter:blur(10px);
    }
    .badge.hot{
      background:rgba(40,215,255,.14);
      border-color:rgba(40,215,255,.24);
    }
    .badge.new{
      background:rgba(139,92,246,.14);
      border-color:rgba(139,92,246,.24);
    }
    .card-title{
      margin:14px 0 8px;
      font-size:18px;
      line-height:1.45;
      font-weight:800;
      letter-spacing:-.2px;
    }
    .card-desc{
      color:var(--muted);
      font-size:14px;
      line-height:1.75;
      margin:0;
    }
    .card-foot{
      display:flex;
      justify-content:space-between;
      gap:12px;
      align-items:center;
      margin-top:14px;
      color:var(--soft);
      font-size:12px;
    }
    .mini-stats{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
    }
    .mini-stats span{
      display:inline-flex;
      align-items:center;
      gap:5px;
    }
    .mini-cta{
      color:#DDFBFF;
      font-weight:700;
    }

    .list-grid{
      display:grid;
      grid-template-columns:1.16fr .84fr;
      gap:22px;
      align-items:start;
    }
    .list-panel,.note-panel,.quote-panel,.cta-panel,.faq-panel,.contact-panel{
      border-radius:32px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow);
      backdrop-filter:blur(22px);
    }
    .list-panel{
      padding:22px;
    }
    .list-item{
      display:grid;
      grid-template-columns:78px 1fr auto;
      gap:14px;
      align-items:start;
      padding:18px 0;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .list-item:last-child{border-bottom:0;padding-bottom:6px}
    .num{
      font-size:30px;
      line-height:1;
      font-weight:800;
      letter-spacing:-1px;
      color:rgba(255,255,255,.82);
      opacity:.68;
    }
    .li-main h3{
      margin:0 0 8px;
      font-size:18px;
      line-height:1.45;
    }
    .li-main p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
      max-width:42em;
    }
    .li-tags{
      margin-top:10px;
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .li-tag{
      display:inline-flex;
      align-items:center;
      padding:6px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      color:var(--muted);
      font-size:12px;
    }
    .li-action{
      align-self:center;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#DBFBFF;
      font-weight:700;
      font-size:13px;
      white-space:nowrap;
    }

    .note-panel{
      padding:22px;
      position:sticky;
      top:18px;
    }
    .note-panel .kicker{
      display:flex;
      align-items:center;
      gap:8px;
      color:#DFF9FF;
      font-weight:800;
      margin-bottom:12px;
    }
    .note-panel .kicker .p{
      width:10px;height:10px;border-radius:50%;
      background:var(--good);
      box-shadow:0 0 0 5px rgba(54,214,169,.1);
    }
    .note-panel h3{
      margin:0 0 10px;
      font-size:22px;
      line-height:1.35;
    }
    .note-panel p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.86;
    }
    .rule-list{
      display:grid;
      gap:10px;
      margin:18px 0 0;
      padding:0;
      list-style:none;
    }
    .rule-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      padding:12px 12px;
      border-radius:18px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      color:var(--muted);
      font-size:13px;
      line-height:1.65;
    }
    .rule-list b{
      color:#fff;
      flex:0 0 auto;
    }

    .ticker{
      overflow:hidden;
      border-radius:28px;
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.05);
      box-shadow:var(--shadow);
    }
    .ticker-track{
      display:flex;
      gap:14px;
      padding:16px;
      min-width:max-content;
      animation:marquee 30s linear infinite;
    }
    .quote{
      min-width:280px;
      max-width:360px;
      border-radius:22px;
      padding:16px 18px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      display:grid;
      grid-template-columns:42px 1fr;
      gap:12px;
      align-items:start;
    }
    .avatar{
      width:42px;height:42px;border-radius:50%;
      background:linear-gradient(135deg, rgba(40,215,255,.28), rgba(139,92,246,.26));
      border:1px solid rgba(255,255,255,.16);
      display:grid;
      place-items:center;
      font-weight:800;
      color:#fff;
      box-shadow:0 10px 22px rgba(0,0,0,.18);
    }
    .quote p{
      margin:0;
      color:#E9F5FF;
      font-size:14px;
      line-height:1.72;
    }
    .quote small{
      display:flex;
      align-items:center;
      gap:8px;
      margin-top:8px;
      color:var(--muted);
      font-size:12px;
    }
    .stars{color:#FFD98F; letter-spacing:1px}
    @keyframes marquee{
      0%{transform:translateX(0)}
      100%{transform:translateX(-50%)}
    }

    .cta-panel{
      padding:26px;
      overflow:hidden;
      position:relative;
    }
    .cta-panel::before{
      content:"";
      position:absolute;
      inset:-20% auto auto -10%;
      width:260px;
      height:260px;
      background:radial-gradient(circle, rgba(40,215,255,.18), transparent 65%);
      pointer-events:none;
    }
    .cta-head{
      display:flex;
      justify-content:space-between;
      gap:18px;
      align-items:end;
      position:relative;
      z-index:1;
    }
    .steps{
      margin-top:20px;
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:14px;
      position:relative;
      z-index:1;
    }
    .step{
      padding:18px;
      border-radius:24px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      min-height:140px;
    }
    .step .snum{
      font-size:12px;
      color:#DFF8FF;
      font-weight:800;
      letter-spacing:.3px;
      margin-bottom:14px;
      display:flex;
      align-items:center;
      gap:8px;
    }
    .step .snum::before{
      content:"";
      width:10px;height:10px;border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 5px rgba(40,215,255,.10);
    }
    .step h3{
      margin:0 0 8px;
      font-size:18px;
      line-height:1.4;
    }
    .step p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      margin-top:18px;
      position:relative;
      z-index:1;
    }

    .faq-panel{
      padding:6px 0;
    }
    .faq-item{
      border-top:1px solid rgba(255,255,255,.08);
    }
    .faq-item:first-child{border-top:0}
    details{
      padding:0 22px;
    }
    summary{
      list-style:none;
      cursor:pointer;
      min-height:64px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      font-weight:700;
      color:#fff;
      outline:none;
    }
    summary::-webkit-details-marker{display:none}
    summary .mark{
      width:24px;height:24px;
      border-radius:50%;
      display:grid;
      place-items:center;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.05);
      color:var(--primary);
      flex:0 0 auto;
      transition:transform .25s var(--ease), background .25s var(--ease);
    }
    details[open] summary .mark{
      transform:rotate(45deg);
      background:rgba(40,215,255,.12);
    }
    details[open]{
      background:rgba(255,255,255,.04);
    }
    details[open] summary{
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .faq-content{
      padding:0 0 18px;
      color:var(--muted);
      font-size:14px;
      line-height:1.86;
      max-width:62em;
    }

    .contact-grid{
      display:grid;
      grid-template-columns:1fr .92fr;
      gap:22px;
      align-items:stretch;
    }
    .contact-panel{
      padding:24px;
    }
    .contact-panel h3{
      margin:0 0 8px;
      font-size:24px;
      line-height:1.32;
    }
    .contact-panel p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.84;
    }
    .form{
      margin-top:18px;
      display:grid;
      gap:12px;
    }
    .field{
      display:grid;
      gap:8px;
    }
    .field label{
      font-size:13px;
      color:#DCEBFF;
      font-weight:700;
    }
    .input, .textarea{
      width:100%;
      border-radius:18px;
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.05);
      color:#fff;
      padding:14px 16px;
      transition:border-color .22s var(--ease), background .22s var(--ease), box-shadow .22s var(--ease);
    }
    .input::placeholder,.textarea::placeholder{color:#7F8CA5}
    .input:focus,.textarea:focus{
      outline:none;
      border-color:rgba(40,215,255,.35);
      background:rgba(255,255,255,.07);
      box-shadow:0 0 0 4px rgba(40,215,255,.10);
    }
    .textarea{
      min-height:120px;
      resize:vertical;
    }
    .form-note{
      color:var(--soft);
      font-size:12px;
      line-height:1.7;
    }
    .contact-side{
      padding:24px;
      display:grid;
      gap:14px;
    }
    .info-box{
      border-radius:24px;
      padding:18px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
    }
    .info-box strong{
      display:block;
      font-size:16px;
      margin-bottom:8px;
    }
    .info-box p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
    }
    .info-line{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-top:12px;
      color:#fff;
      font-size:13px;
    }
    .info-line span{
      color:var(--muted);
    }

    footer{
      margin-top:var(--section);
      padding:30px 0 34px;
      border-top:1px solid rgba(255,255,255,.08);
      background:linear-gradient(180deg, rgba(7,17,31,.18), rgba(7,17,31,.46));
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .9fr;
      gap:24px;
    }
    .footer-brand{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .footer-brand .logo{
      display:inline-flex;
      align-items:center;
      gap:12px;
      font-weight:800;
      font-size:18px;
      line-height:1.2;
    }
    .footer-brand .logo .mark{
      width:46px;height:46px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg, rgba(40,215,255,.22), rgba(139,92,246,.28));
      border:1px solid rgba(255,255,255,.12);
      box-shadow:var(--shadow-glow);
    }
    .footer-brand p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.84;
      max-width:34em;
    }
    .footer-col h4{
      margin:0 0 14px;
      font-size:16px;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:var(--muted);
      font-size:14px;
      transition:color .22s var(--ease), transform .22s var(--ease);
    }
    .footer-links a:hover{
      color:#fff;
      transform:translateX(2px);
    }
    .footer-note{
      margin-top:16px;
      padding-top:14px;
      border-top:1px solid rgba(255,255,255,.08);
      color:var(--soft);
      font-size:12px;
      line-height:1.8;
    }
    .copyright{
      margin-top:14px;
      color:var(--soft);
      font-size:12px;
    }

    .floating-bar{
      position:fixed;
      right:18px;
      bottom:18px;
      z-index:24;
      display:none;
    }
    .floating-bar a{
      min-width:132px;
      height:48px;
      padding:0 18px;
      border-radius:999px;
      background:linear-gradient(135deg, var(--primary), var(--primary-2));
      color:#fff;
      font-weight:800;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      box-shadow:var(--shadow-glow);
    }

    .divider{
      width:100%;
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(40,215,255,.28), rgba(139,92,246,.24), transparent);
      margin:26px 0 0;
    }

    @media (max-width: 1180px){
      .hero-grid,
      .feature-row,
      .list-grid,
      .contact-grid,
      .footer-grid{
        grid-template-columns:1fr;
      }
      .feature-scroll{
        grid-template-columns:repeat(2, minmax(0,1fr));
      }
      .feature-big{grid-row:auto;min-height:unset}
      .note-panel{position:relative;top:0}
    }

    @media (max-width: 1024px){
      :root{--nav-w:98px; --section:72px}
      .hero-card{padding:28px}
      .steps{grid-template-columns:1fr}
      .topbar-inner,.wrap{width:min(var(--container), calc(100% - 20px))}
      .list-item{grid-template-columns:64px 1fr}
      .li-action{grid-column:2}
    }

    @media (max-width: 768px){
      .side{display:none}
      .content{margin-left:0}
      .topbar{display:block}
      .hero{padding-top:16px}
      .hero-card{padding:22px;border-radius:28px}
      .hero-grid{grid-template-columns:1fr}
      .cover-phone{
        width:min(100%, 340px);
        margin:6px auto 0;
      }
      h1{max-width:100%}
      .hero p{font-size:15px}
      .section{padding-top:64px}
      .section-head{flex-direction:column;align-items:flex-start}
      .feature-scroll{grid-template-columns:1fr}
      .feature-row,.list-grid,.contact-grid{gap:18px}
      .ticker-track{animation-duration:24s}
      .floating-bar{display:block}
      .footer-grid{grid-template-columns:1fr}
    }

    @media (max-width: 560px){
      .hero-card{padding:18px}
      h1{font-size:clamp(30px, 10vw, 40px)}
      .btn,.cta-mini{width:100%;justify-content:center}
      .hero-actions,.cta-actions{flex-direction:column}
      .meta-strip{gap:8px}
      .meta-item{width:100%;justify-content:center}
      .tags-row{margin-top:18px}
      .section h2{font-size:clamp(24px, 8vw, 30px)}
      .card-title{font-size:17px}
      .list-panel,.note-panel,.cta-panel,.contact-panel{padding:18px}
      .list-item{grid-template-columns:52px 1fr}
      .num{font-size:24px}
      .screen-bottom .title{font-size:15px}
      summary{min-height:58px;font-size:15px}
      details{padding:0 16px}
      .quote{min-width:260px}
      .contact-side{padding:18px}
    }

    @media (max-width: 390px){
      .topbar-inner{min-height:66px}
      .top-brand-text span{display:none}
      .cover-phone{width:100%}
      .hero p,.sub,.card-desc,.note-panel p,.contact-panel p{font-size:14px}
      .badge-row{left:12px;top:12px}
      .card-body{padding:16px}
    }

    @media (prefers-reduced-motion: reduce){
      *{scroll-behavior:auto}
      *,*::before,*::after{
        animation-duration:.01ms !important;
        animation-iteration-count:1 !important;
        transition-duration:.01ms !important;
      }
    }

/* roulang page: category1 */
:root {
      --bg: #07111F;
      --bg-2: #0A1020;
      --panel: rgba(255, 255, 255, .062);
      --panel-strong: rgba(255, 255, 255, .095);
      --line: rgba(255, 255, 255, .13);
      --line-strong: rgba(40, 215, 255, .45);
      --text: #F5F7FB;
      --muted: #A8B3C7;
      --soft: #6F7B91;
      --cyan: #28D7FF;
      --purple: #8B5CF6;
      --pink: #F2A7C6;
      --amber: #F6C76E;
      --green: #55E6B8;
      --danger: #FF8F9B;
      --shadow: 0 22px 80px rgba(0, 0, 0, .38);
      --glow: 0 0 38px rgba(40, 215, 255, .22), 0 0 72px rgba(139, 92, 246, .16);
      --radius-xl: 34px;
      --radius-lg: 26px;
      --radius-md: 20px;
      --radius-sm: 14px;
      --nav-w: 104px;
      --wrap: 1210px;
      --ease: cubic-bezier(.2, .75, .25, 1);
      --font: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      background: var(--bg);
    }

    body {
      margin: 0;
      font-family: var(--font);
      color: var(--text);
      line-height: 1.78;
      background:
        radial-gradient(circle at 78% 8%, rgba(139, 92, 246, .22), transparent 32rem),
        radial-gradient(circle at 18% 24%, rgba(40, 215, 255, .16), transparent 30rem),
        radial-gradient(circle at 70% 74%, rgba(242, 167, 198, .08), transparent 28rem),
        linear-gradient(135deg, var(--bg), var(--bg-2) 55%, #15142F);
      min-height: 100vh;
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      opacity: .33;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size: 46px 46px;
      mask-image: radial-gradient(circle at 55% 25%, black, transparent 72%);
      z-index: -2;
    }

    body::after {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background:
        linear-gradient(115deg, transparent 0%, rgba(40,215,255,.045) 46%, transparent 58%),
        repeating-linear-gradient(0deg, rgba(255,255,255,.018), rgba(255,255,255,.018) 1px, transparent 1px, transparent 4px);
      opacity: .55;
      z-index: -1;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    img, svg {
      max-width: 100%;
      display: block;
    }

    button, input, textarea {
      font: inherit;
    }

    button {
      cursor: pointer;
      border: 0;
    }

    ::selection {
      color: #06101d;
      background: var(--cyan);
    }

    :focus-visible {
      outline: 3px solid rgba(40, 215, 255, .55);
      outline-offset: 4px;
      border-radius: 12px;
    }

    .page {
      min-height: 100vh;
      padding-left: var(--nav-w);
    }

    .wrap {
      width: min(var(--wrap), calc(100% - 48px));
      margin: 0 auto;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      letter-spacing: -.02em;
      color: var(--text);
    }

    .mark {
      width: 42px;
      height: 42px;
      display: inline-grid;
      place-items: center;
      border-radius: 16px;
      text-transform: uppercase;
      font-size: 13px;
      letter-spacing: .02em;
      background:
        radial-gradient(circle at 30% 18%, rgba(255,255,255,.28), transparent 30%),
        linear-gradient(135deg, rgba(40,215,255,.95), rgba(139,92,246,.92));
      box-shadow: 0 0 28px rgba(40, 215, 255, .34);
    }

    .side-shell {
      position: fixed;
      inset: 0 auto 0 0;
      width: var(--nav-w);
      z-index: 50;
      padding: 22px 14px;
      background: linear-gradient(180deg, rgba(7,17,31,.82), rgba(10,16,32,.62));
      backdrop-filter: blur(24px);
      border-right: 1px solid var(--line);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 24px;
    }

    .side-logo {
      width: 70px;
      min-height: 72px;
      display: grid;
      place-items: center;
      border: 1px solid rgba(255,255,255,.14);
      border-radius: 28px;
      background: rgba(255,255,255,.06);
      box-shadow: var(--glow);
    }

    .side-logo .mark {
      width: 48px;
      height: 48px;
      border-radius: 18px;
    }

    .side-nav {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 14px;
      width: 100%;
    }

    .nav-link {
      position: relative;
      width: 76px;
      min-height: 68px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-radius: 24px;
      color: var(--muted);
      font-size: 13px;
      font-weight: 700;
      border: 1px solid transparent;
      transition: transform .24s var(--ease), background .24s var(--ease), color .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
    }

    .nav-link .ico {
      font-size: 21px;
      line-height: 1;
      margin-bottom: 5px;
      color: var(--cyan);
      filter: drop-shadow(0 0 10px rgba(40,215,255,.25));
    }

    .nav-link:hover {
      transform: translateY(-2px);
      color: var(--text);
      background: rgba(255,255,255,.07);
      border-color: rgba(255,255,255,.13);
    }

    .nav-link.active,
    .nav-link[aria-current="page"] {
      color: var(--text);
      background: linear-gradient(135deg, rgba(40,215,255,.16), rgba(139,92,246,.16));
      border-color: rgba(40,215,255,.36);
      box-shadow: inset 3px 0 0 rgba(40,215,255,.9), 0 0 32px rgba(40,215,255,.16);
    }

    .side-bottom {
      margin-top: auto;
      width: 76px;
      padding: 14px 8px;
      border-radius: 24px;
      border: 1px solid rgba(246,199,110,.24);
      color: var(--amber);
      background: rgba(246,199,110,.075);
      text-align: center;
      font-size: 12px;
      line-height: 1.45;
    }

    .mobile-top {
      display: none;
      position: sticky;
      top: 0;
      z-index: 60;
      padding: 12px 16px;
      background: rgba(7,17,31,.78);
      backdrop-filter: blur(22px);
      border-bottom: 1px solid var(--line);
    }

    .mobile-top-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
    }

    .mobile-top .logo span:last-child {
      max-width: 170px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      font-size: 15px;
    }

    .menu-toggle {
      width: 46px;
      height: 46px;
      border-radius: 16px;
      color: var(--text);
      background: rgba(255,255,255,.08);
      border: 1px solid var(--line);
      display: grid;
      place-items: center;
      transition: background .22s var(--ease), transform .22s var(--ease);
    }

    .menu-toggle:hover {
      background: rgba(255,255,255,.13);
      transform: translateY(-1px);
    }

    .mobile-drawer {
      display: none;
      padding: 16px;
      margin-top: 12px;
      border-radius: 24px;
      border: 1px solid var(--line);
      background: rgba(10,16,32,.92);
      box-shadow: var(--shadow);
    }

    .mobile-drawer.open {
      display: block;
    }

    .mobile-drawer .side-nav {
      flex-direction: row;
      align-items: stretch;
    }

    .mobile-drawer .nav-link {
      flex: 1;
      width: auto;
    }

    main {
      padding: 34px 0 0;
    }

    .section {
      padding: 52px 0;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 24px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      padding: 8px 12px;
      border-radius: 999px;
      border: 1px solid rgba(40,215,255,.28);
      background: rgba(40,215,255,.08);
      color: #C9F6FF;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .02em;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--pink);
      box-shadow: 0 0 18px rgba(242,167,198,.78);
    }

    h1, h2, h3, p {
      margin-top: 0;
    }

    h1 {
      margin: 18px 0 16px;
      font-size: clamp(34px, 5vw, 58px);
      line-height: 1.13;
      letter-spacing: -.05em;
    }

    h2 {
      margin: 0;
      font-size: clamp(26px, 3vw, 38px);
      line-height: 1.2;
      letter-spacing: -.035em;
    }

    h3 {
      margin-bottom: 10px;
      font-size: 20px;
      line-height: 1.35;
      letter-spacing: -.02em;
    }

    p {
      color: var(--muted);
    }

    .lead {
      max-width: 720px;
      font-size: 17px;
      line-height: 1.85;
      color: #C3CCDA;
      margin-bottom: 0;
    }

    .btn-row {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }

    .btn {
      min-height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      padding: 12px 20px;
      border-radius: 999px;
      font-weight: 800;
      color: var(--text);
      transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
      user-select: none;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--cyan), var(--purple));
      box-shadow: 0 14px 34px rgba(40, 215, 255, .22), 0 10px 42px rgba(139, 92, 246, .18);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 46px rgba(40, 215, 255, .31), 0 12px 56px rgba(139, 92, 246, .26);
    }

    .btn-primary:active,
    .btn-secondary:active {
      transform: scale(.98);
    }

    .btn-secondary {
      border: 1px solid var(--line);
      background: rgba(255,255,255,.06);
    }

    .btn-secondary:hover {
      transform: translateY(-2px);
      border-color: rgba(40,215,255,.36);
      background: rgba(255,255,255,.095);
    }

    .tag {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 32px;
      padding: 6px 12px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.14);
      background: rgba(255,255,255,.055);
      color: #CAD4E5;
      font-size: 13px;
      font-weight: 700;
      white-space: nowrap;
      transition: border-color .22s var(--ease), background .22s var(--ease), color .22s var(--ease), transform .22s var(--ease);
    }

    .tag:hover {
      border-color: rgba(40,215,255,.42);
      background: rgba(40,215,255,.09);
      color: var(--text);
      transform: translateY(-1px);
    }

    .tag.active {
      border-color: transparent;
      background: linear-gradient(135deg, rgba(40,215,255,.92), rgba(139,92,246,.92));
      color: #fff;
      box-shadow: 0 0 26px rgba(40,215,255,.18);
    }

    .glass {
      position: relative;
      border: 1px solid var(--line);
      background:
        linear-gradient(135deg, rgba(255,255,255,.085), rgba(255,255,255,.038)),
        rgba(255,255,255,.045);
      backdrop-filter: blur(22px);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .glass::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background: linear-gradient(135deg, rgba(255,255,255,.18), transparent 28%, transparent 70%, rgba(40,215,255,.08));
      opacity: .62;
    }

    .channel-hero {
      padding: 34px;
      border-radius: var(--radius-xl);
      display: grid;
      grid-template-columns: minmax(0, 1.28fr) 420px;
      gap: 34px;
      align-items: stretch;
      min-height: 520px;
    }

    .hero-copy {
      position: relative;
      z-index: 1;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 12px 0;
    }

    .notice-strip {
      margin-top: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .notice {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 13px;
      border-radius: 16px;
      border: 1px solid rgba(246,199,110,.25);
      background: rgba(246,199,110,.08);
      color: #F8DFA5;
      font-size: 13px;
      font-weight: 700;
    }

    .feature-cover {
      position: relative;
      z-index: 1;
      border-radius: 32px;
      min-height: 456px;
      padding: 18px;
      border: 1px solid rgba(255,255,255,.15);
      background:
        radial-gradient(circle at 34% 18%, rgba(242,167,198,.22), transparent 28%),
        radial-gradient(circle at 68% 54%, rgba(40,215,255,.24), transparent 32%),
        linear-gradient(160deg, rgba(9,18,37,.86), rgba(36,26,68,.86));
      box-shadow: inset 0 0 70px rgba(255,255,255,.04), 0 30px 80px rgba(0,0,0,.36);
      overflow: hidden;
    }

    .feature-cover::after {
      content: "";
      position: absolute;
      left: 18%;
      right: 18%;
      top: 16%;
      bottom: 17%;
      border-radius: 46% 46% 38% 38%;
      background:
        radial-gradient(circle at 50% 16%, rgba(255,255,255,.20), transparent 13%),
        linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.02));
      filter: blur(1px);
      opacity: .62;
    }

    .cover-top,
    .cover-bottom,
    .float-metrics {
      position: relative;
      z-index: 2;
    }

    .cover-top {
      display: flex;
      justify-content: space-between;
      gap: 10px;
      align-items: center;
    }

    .cover-pill {
      padding: 8px 11px;
      border-radius: 999px;
      background: rgba(0,0,0,.26);
      border: 1px solid rgba(255,255,255,.16);
      color: #EAF7FF;
      font-size: 12px;
      font-weight: 800;
    }

    .play {
      position: absolute;
      z-index: 3;
      inset: 0;
      margin: auto;
      width: 74px;
      height: 74px;
      border-radius: 999px;
      display: grid;
      place-items: center;
      background: rgba(255,255,255,.13);
      border: 1px solid rgba(255,255,255,.2);
      box-shadow: 0 0 40px rgba(40,215,255,.28);
      backdrop-filter: blur(14px);
      color: #fff;
      font-size: 30px;
    }

    .float-metrics {
      position: absolute;
      right: 16px;
      top: 34%;
      display: grid;
      gap: 12px;
    }

    .metric-dot {
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      border: 1px solid rgba(255,255,255,.15);
      background: rgba(0,0,0,.25);
      color: var(--text);
      font-weight: 900;
      backdrop-filter: blur(12px);
    }

    .cover-bottom {
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 18px;
      padding: 18px;
      border-radius: 24px;
      background: rgba(0,0,0,.27);
      border: 1px solid rgba(255,255,255,.14);
      backdrop-filter: blur(14px);
    }

    .cover-bottom strong {
      display: block;
      font-size: 18px;
      line-height: 1.35;
      margin-bottom: 10px;
    }

    .progress {
      height: 6px;
      border-radius: 999px;
      background: rgba(255,255,255,.13);
      overflow: hidden;
    }

    .progress span {
      display: block;
      width: 68%;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--cyan), var(--pink));
    }

    .stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
      margin-top: 26px;
    }

    .stat {
      padding: 18px;
      border-radius: 22px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.052);
    }

    .stat b {
      display: block;
      font-size: 28px;
      line-height: 1;
      color: #EAFBFF;
      letter-spacing: -.03em;
    }

    .stat span {
      display: block;
      margin-top: 8px;
      color: var(--muted);
      font-size: 13px;
      font-weight: 700;
    }

    .filter-panel {
      padding: 18px;
      border-radius: 26px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .filter-tags {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }

    .search-box {
      flex: 0 0 300px;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 12px 14px;
      border-radius: 18px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.055);
      color: var(--muted);
    }

    .search-box input {
      width: 100%;
      min-width: 0;
      border: 0;
      outline: 0;
      background: transparent;
      color: var(--text);
    }

    .search-box input::placeholder {
      color: var(--soft);
    }

    .search-box:focus-within {
      border-color: rgba(40,215,255,.45);
      box-shadow: 0 0 0 4px rgba(40,215,255,.08);
    }

    .content-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 320px;
      gap: 24px;
      align-items: start;
    }

    .masonry {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .video-card {
      border-radius: 28px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.055);
      overflow: hidden;
      box-shadow: 0 18px 54px rgba(0,0,0,.24);
      transition: transform .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease);
    }

    .video-card:hover {
      transform: translateY(-6px);
      border-color: rgba(40,215,255,.38);
      background: rgba(255,255,255,.075);
      box-shadow: 0 26px 70px rgba(0,0,0,.32), 0 0 32px rgba(40,215,255,.13);
    }

    .thumb {
      position: relative;
      aspect-ratio: 9 / 13;
      min-height: 250px;
      overflow: hidden;
      background:
        radial-gradient(circle at 35% 20%, rgba(242,167,198,.30), transparent 23%),
        radial-gradient(circle at 70% 46%, rgba(40,215,255,.28), transparent 30%),
        linear-gradient(155deg, rgba(12,24,48,.92), rgba(44,30,78,.9));
    }

    .thumb.alt-1 {
      background:
        radial-gradient(circle at 65% 18%, rgba(40,215,255,.28), transparent 27%),
        radial-gradient(circle at 30% 62%, rgba(139,92,246,.32), transparent 31%),
        linear-gradient(155deg, #0B1C33, #21183D);
    }

    .thumb.alt-2 {
      background:
        radial-gradient(circle at 35% 22%, rgba(246,199,110,.19), transparent 25%),
        radial-gradient(circle at 67% 54%, rgba(242,167,198,.24), transparent 32%),
        linear-gradient(155deg, #0D1729, #2A1E43);
    }

    .thumb.alt-3 {
      background:
        radial-gradient(circle at 50% 18%, rgba(255,255,255,.13), transparent 18%),
        radial-gradient(circle at 72% 60%, rgba(40,215,255,.22), transparent 35%),
        linear-gradient(155deg, #0B1324, #172A48);
    }

    .thumb::before {
      content: "";
      position: absolute;
      left: 24%;
      right: 24%;
      top: 18%;
      bottom: 14%;
      border-radius: 44% 44% 34% 34%;
      background: linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.025));
      filter: blur(.5px);
      opacity: .64;
    }

    .badge {
      position: absolute;
      left: 12px;
      top: 12px;
      z-index: 2;
      padding: 7px 10px;
      border-radius: 999px;
      background: rgba(0,0,0,.34);
      border: 1px solid rgba(255,255,255,.16);
      color: #F0FAFF;
      font-size: 12px;
      font-weight: 800;
      backdrop-filter: blur(12px);
    }

    .thumb-action {
      position: absolute;
      right: 12px;
      bottom: 12px;
      z-index: 2;
      width: 42px;
      height: 42px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      background: rgba(255,255,255,.14);
      border: 1px solid rgba(255,255,255,.18);
      color: #fff;
      backdrop-filter: blur(12px);
    }

    .video-body {
      padding: 16px;
    }

    .video-body h3 {
      display: -webkit-box;
      min-height: 54px;
      overflow: hidden;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
    }

    .video-body p {
      margin-bottom: 12px;
      font-size: 14px;
      color: var(--muted);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .meta {
      display: flex;
      justify-content: space-between;
      gap: 8px;
      color: var(--soft);
      font-size: 12px;
      font-weight: 800;
    }

    .mini-link {
      display: inline-flex;
      margin-top: 14px;
      align-items: center;
      gap: 6px;
      color: #C9F6FF;
      font-size: 13px;
      font-weight: 900;
    }

    .rail {
      position: sticky;
      top: 28px;
      display: grid;
      gap: 18px;
    }

    .rail-card {
      padding: 20px;
      border-radius: 26px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.058);
      box-shadow: 0 18px 54px rgba(0,0,0,.22);
    }

    .rail-card h3 {
      margin-bottom: 14px;
    }

    .rank-list {
      display: grid;
      gap: 12px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .rank-list li {
      display: grid;
      grid-template-columns: 34px 1fr;
      gap: 10px;
      padding-bottom: 12px;
      border-bottom: 1px solid rgba(255,255,255,.08);
    }

    .rank-list li:last-child {
      border-bottom: 0;
      padding-bottom: 0;
    }

    .rank-num {
      width: 30px;
      height: 30px;
      display: grid;
      place-items: center;
      border-radius: 12px;
      background: rgba(40,215,255,.12);
      color: var(--cyan);
      font-weight: 900;
      border: 1px solid rgba(40,215,255,.24);
    }

    .rank-list strong {
      display: block;
      line-height: 1.35;
      font-size: 14px;
    }

    .rank-list span {
      color: var(--soft);
      font-size: 12px;
      font-weight: 700;
    }

    .tip-card {
      padding: 20px;
      border-radius: 26px;
      border: 1px solid rgba(246,199,110,.24);
      background: rgba(246,199,110,.075);
      color: #F8DFA5;
    }

    .tip-card p {
      color: #E9D7A9;
      margin-bottom: 0;
      font-size: 14px;
    }

    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .step {
      padding: 22px;
      border-radius: 26px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.055);
      position: relative;
      overflow: hidden;
      transition: transform .24s var(--ease), border-color .24s var(--ease), background .24s var(--ease);
    }

    .step:hover {
      transform: translateY(-4px);
      border-color: rgba(40,215,255,.34);
      background: rgba(255,255,255,.075);
    }

    .step-num {
      width: 42px;
      height: 42px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      margin-bottom: 16px;
      color: #06101D;
      font-weight: 900;
      background: linear-gradient(135deg, var(--cyan), var(--pink));
    }

    .step p {
      margin-bottom: 0;
      font-size: 14px;
    }

    .privacy-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .info-card {
      padding: 24px;
      border-radius: 28px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.055);
    }

    .info-card ul {
      margin: 14px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 12px;
    }

    .info-card li {
      position: relative;
      padding-left: 24px;
      color: #C5D0E2;
    }

    .info-card li::before {
      content: "";
      position: absolute;
      left: 0;
      top: .68em;
      width: 9px;
      height: 9px;
      border-radius: 999px;
      background: var(--cyan);
      box-shadow: 0 0 15px rgba(40,215,255,.5);
    }

    .faq-list {
      display: grid;
      gap: 12px;
    }

    details {
      border: 1px solid var(--line);
      border-radius: 22px;
      background: rgba(255,255,255,.052);
      overflow: hidden;
      transition: border-color .22s var(--ease), background .22s var(--ease);
    }

    details[open] {
      border-color: rgba(40,215,255,.34);
      background: rgba(40,215,255,.065);
      box-shadow: 0 0 28px rgba(40,215,255,.08);
    }

    summary {
      min-height: 58px;
      padding: 18px 54px 18px 20px;
      cursor: pointer;
      list-style: none;
      position: relative;
      font-weight: 900;
      color: #EEF6FF;
    }

    summary::-webkit-details-marker {
      display: none;
    }

    summary::after {
      content: "+";
      position: absolute;
      right: 20px;
      top: 50%;
      transform: translateY(-50%);
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 10px;
      background: rgba(255,255,255,.08);
      color: var(--cyan);
      font-size: 20px;
      line-height: 1;
    }

    details[open] summary::after {
      content: "–";
    }

    details p {
      padding: 0 20px 20px;
      margin: 0;
      max-width: 900px;
    }

    .cta-panel {
      padding: 34px;
      border-radius: var(--radius-xl);
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 28px;
      align-items: center;
    }

    .cta-panel h2 {
      margin-bottom: 12px;
    }

    .feedback-form {
      display: grid;
      gap: 12px;
      min-width: 320px;
    }

    .field {
      display: grid;
      gap: 7px;
    }

    .field label {
      color: #DCE7F8;
      font-size: 13px;
      font-weight: 800;
    }

    .field input,
    .field textarea {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 16px;
      background: rgba(255,255,255,.06);
      color: var(--text);
      padding: 12px 14px;
      outline: 0;
      transition: border-color .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease);
    }

    .field textarea {
      min-height: 92px;
      resize: vertical;
    }

    .field input::placeholder,
    .field textarea::placeholder {
      color: var(--soft);
    }

    .field input:focus,
    .field textarea:focus {
      border-color: rgba(40,215,255,.48);
      background: rgba(255,255,255,.078);
      box-shadow: 0 0 0 4px rgba(40,215,255,.08);
    }

    .form-hint {
      font-size: 12px;
      color: var(--soft);
      margin: -2px 0 0;
    }

    footer {
      margin-top: 56px;
      padding: 58px 0 34px;
      border-top: 1px solid rgba(40,215,255,.18);
      background:
        linear-gradient(90deg, rgba(40,215,255,.10), transparent 22%, transparent 78%, rgba(139,92,246,.10)),
        rgba(3, 9, 18, .42);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.4fr) .7fr .8fr;
      gap: 30px;
      align-items: start;
    }

    .footer-brand p {
      margin: 18px 0 14px;
      max-width: 520px;
      color: var(--muted);
    }

    .footer-note {
      color: #D7C594;
      font-size: 13px;
      line-height: 1.7;
    }

    .copyright {
      margin-top: 14px;
      color: var(--soft);
      font-size: 13px;
    }

    .footer-col h4 {
      margin: 0 0 14px;
      font-size: 15px;
      color: #EAF7FF;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-links a {
      color: var(--muted);
      transition: color .22s var(--ease), transform .22s var(--ease);
    }

    .footer-links a:hover {
      color: var(--cyan);
      transform: translateX(3px);
    }

    @media (max-width: 1180px) {
      .channel-hero {
        grid-template-columns: minmax(0, 1fr) 360px;
      }

      .masonry {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 1024px) {
      :root {
        --nav-w: 92px;
      }

      .side-shell {
        padding-inline: 10px;
      }

      .nav-link {
        width: 68px;
      }

      .channel-hero,
      .content-layout,
      .cta-panel {
        grid-template-columns: 1fr;
      }

      .feature-cover {
        max-width: 420px;
        width: 100%;
        margin: 0 auto;
      }

      .rail {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .tip-card {
        grid-column: 1 / -1;
      }

      .filter-panel {
        align-items: stretch;
        flex-direction: column;
      }

      .search-box {
        flex: 1;
        width: 100%;
      }
    }

    @media (max-width: 768px) {
      .page {
        padding-left: 0;
      }

      .side-shell {
        display: none;
      }

      .mobile-top {
        display: block;
      }

      .wrap {
        width: min(100% - 32px, var(--wrap));
      }

      main {
        padding-top: 22px;
      }

      .section {
        padding: 38px 0;
      }

      .section-head {
        display: block;
      }

      .section-head .lead {
        margin-top: 10px;
      }

      .channel-hero {
        padding: 22px;
        min-height: auto;
        border-radius: 28px;
      }

      .stats {
        grid-template-columns: 1fr;
      }

      .filter-tags {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 4px;
        scrollbar-width: none;
      }

      .filter-tags::-webkit-scrollbar {
        display: none;
      }

      .masonry {
        display: flex;
        overflow-x: auto;
        gap: 16px;
        padding: 2px 2px 12px;
        scroll-snap-type: x mandatory;
        scrollbar-width: none;
      }

      .masonry::-webkit-scrollbar {
        display: none;
      }

      .video-card {
        flex: 0 0 76vw;
        scroll-snap-align: start;
      }

      .rail,
      .privacy-grid {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 560px) {
      h1 {
        font-size: 34px;
      }

      .btn-row,
      .btn {
        width: 100%;
      }

      .channel-hero,
      .cta-panel {
        padding: 18px;
      }

      .feature-cover {
        min-height: 420px;
        border-radius: 26px;
      }

      .steps-grid {
        grid-template-columns: 1fr;
      }

      .feedback-form {
        min-width: 0;
      }

      .mobile-drawer .side-nav {
        flex-direction: column;
      }

      .mobile-drawer .nav-link {
        width: 100%;
        min-height: 58px;
        flex-direction: row;
        gap: 10px;
      }

      .mobile-drawer .nav-link .ico {
        margin-bottom: 0;
      }
    }

    @media (max-width: 390px) {
      .wrap {
        width: min(100% - 24px, var(--wrap));
      }

      .mobile-top {
        padding-inline: 12px;
      }

      .mobile-top .logo span:last-child {
        max-width: 130px;
      }

      .video-card {
        flex-basis: 84vw;
      }

      .thumb {
        min-height: 232px;
      }
    }