/* roulang page: index */
:root{
      --bg:#0a0d12;
      --bg-2:#0f131b;
      --panel:#121824;
      --panel-2:#161d2a;
      --panel-3:#1b2333;
      --text:#f5f7fb;
      --muted:#a8b0bf;
      --soft:#7f889a;
      --line:rgba(255,255,255,.08);
      --line-2:rgba(255,255,255,.12);
      --purple:#8b5cf6;
      --purple-2:#6d28d9;
      --cyan:#34d1d1;
      --orange:#ff9f43;
      --red:#ff5d5d;
      --green:#4ade80;
      --shadow:0 20px 60px rgba(0,0,0,.35);
      --shadow-soft:0 10px 30px rgba(0,0,0,.25);
      --radius-xl:24px;
      --radius-lg:20px;
      --radius-md:16px;
      --radius-sm:12px;
      --container:1200px;
      --space-1:8px;
      --space-2:12px;
      --space-3:16px;
      --space-4:20px;
      --space-5:28px;
      --space-6:36px;
      --space-7:48px;
      --space-8:72px;
      --transition:.22s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      line-height:1.65;
      background:
        radial-gradient(circle at 15% 20%, rgba(139,92,246,.16), transparent 28%),
        radial-gradient(circle at 85% 0%, rgba(52,209,209,.12), transparent 24%),
        linear-gradient(180deg, #090b10 0%, #0b0d12 100%);
      min-height:100vh;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
      background-size:48px 48px;
      opacity:.15;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.85), rgba(0,0,0,.2) 70%, transparent 100%);
      z-index:0;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition:color var(--transition), transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition), opacity var(--transition);
    }
    img{
      max-width:100%;
      display:block;
    }
    button,input,select,textarea{
      font:inherit;
    }
    button{
      border:0;
      background:none;
      color:inherit;
      cursor:pointer;
    }
    :focus-visible{
      outline:2px solid rgba(52,209,209,.9);
      outline-offset:3px;
    }

    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
      position:relative;
      z-index:1;
    }

    .announcement{
      position:relative;
      z-index:2;
      border-bottom:1px solid var(--line);
      background:rgba(8,10,14,.72);
      backdrop-filter:blur(16px);
    }
    .announcement-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:10px 0;
      color:var(--muted);
      font-size:13px;
    }
    .announcement strong{
      color:var(--text);
      font-weight:600;
      letter-spacing:.2px;
    }
    .announcement .announce-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:6px 12px;
      border-radius:999px;
      background:rgba(139,92,246,.12);
      border:1px solid rgba(139,92,246,.25);
      color:#d8ccff;
      white-space:nowrap;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(10,13,18,.78);
      backdrop-filter:blur(18px);
      border-bottom:1px solid var(--line);
    }
    .header-inner{
      display:flex;
      align-items:center;
      gap:16px;
      min-height:78px;
      padding:12px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      flex-shrink:0;
      min-width:0;
    }
    .brand-mark{
      width:40px;
      height:40px;
      border-radius:14px;
      background:
        linear-gradient(145deg, rgba(139,92,246,.95), rgba(52,209,209,.8));
      display:grid;
      place-items:center;
      box-shadow:0 10px 24px rgba(139,92,246,.22);
      position:relative;
      overflow:hidden;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:1px;
      border-radius:13px;
      background:linear-gradient(180deg, rgba(255,255,255,.16), transparent 55%);
      pointer-events:none;
    }
    .brand-mark span{
      font-weight:800;
      letter-spacing:.5px;
      color:#fff;
      font-size:14px;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      gap:2px;
      min-width:0;
    }
    .brand-text strong{
      font-size:15px;
      line-height:1.2;
      letter-spacing:.2px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-text small{
      color:var(--muted);
      font-size:12px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }

    .nav-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.02);
      align-items:center;
      justify-content:center;
      position:relative;
      margin-left:auto;
    }
    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after{
      content:"";
      display:block;
      width:18px;
      height:2px;
      background:var(--text);
      border-radius:999px;
      position:relative;
      transition:transform var(--transition), top var(--transition), opacity var(--transition);
    }
    .nav-toggle span::before{
      position:absolute;
      top:-6px;
      left:0;
    }
    .nav-toggle span::after{
      position:absolute;
      top:6px;
      left:0;
    }

    .header-tools{
      display:flex;
      align-items:center;
      gap:14px;
      margin-left:auto;
    }

    .site-nav{
      display:flex;
      align-items:center;
      gap:8px;
      padding:6px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.02);
      border-radius:999px;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
    }
    .nav-link{
      display:inline-flex;
      align-items:center;
      height:38px;
      padding:0 16px;
      border-radius:999px;
      color:var(--muted);
      font-size:14px;
      letter-spacing:.2px;
    }
    .nav-link:hover{
      color:var(--text);
      background:rgba(255,255,255,.04);
    }
    .nav-link.active{
      color:#fff;
      background:linear-gradient(135deg, rgba(139,92,246,.95), rgba(109,40,217,.72));
      box-shadow:0 8px 22px rgba(139,92,246,.25);
    }

    .search-form{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:min(360px, 38vw);
    }
    .search-field{
      position:relative;
      flex:1;
    }
    .search-field input{
      width:100%;
      height:44px;
      border-radius:14px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.03);
      color:var(--text);
      padding:0 16px;
      padding-left:42px;
      outline:none;
      transition:border-color var(--transition), box-shadow var(--transition), background var(--transition);
    }
    .search-field input::placeholder{
      color:#7f889a;
    }
    .search-field input:focus{
      border-color:rgba(52,209,209,.55);
      background:rgba(255,255,255,.05);
      box-shadow:0 0 0 4px rgba(52,209,209,.08);
    }
    .search-ico{
      position:absolute;
      left:14px;
      top:50%;
      transform:translateY(-50%);
      width:16px;
      height:16px;
      border-radius:50%;
      border:2px solid #8892a8;
    }
    .search-ico::after{
      content:"";
      position:absolute;
      width:7px;
      height:2px;
      background:#8892a8;
      border-radius:999px;
      right:-6px;
      bottom:-4px;
      transform:rotate(45deg);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      height:44px;
      padding:0 18px;
      border-radius:14px;
      border:1px solid transparent;
      font-weight:600;
      letter-spacing:.2px;
      white-space:nowrap;
      transition:transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition), opacity var(--transition);
    }
    .btn:hover{
      transform:translateY(-1px);
    }
    .btn-primary{
      background:linear-gradient(135deg, var(--purple), var(--purple-2));
      color:#fff;
      box-shadow:0 14px 28px rgba(139,92,246,.24);
      border-color:rgba(255,255,255,.04);
    }
    .btn-primary:hover{
      box-shadow:0 16px 32px rgba(139,92,246,.32);
    }
    .btn-secondary{
      background:rgba(255,255,255,.03);
      border-color:var(--line);
      color:var(--text);
    }
    .btn-secondary:hover{
      background:rgba(255,255,255,.06);
      border-color:rgba(52,209,209,.35);
      box-shadow:0 10px 24px rgba(0,0,0,.24);
    }
    .btn-ghost{
      height:38px;
      padding:0 14px;
      border-radius:12px;
      background:rgba(255,255,255,.03);
      border-color:var(--line);
      color:var(--muted);
    }

    main{
      position:relative;
      z-index:1;
    }

    .hero{
      position:relative;
      overflow:hidden;
      padding:34px 0 22px;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, rgba(9,11,16,.32), rgba(9,11,16,.78)),
        radial-gradient(circle at 50% 0%, rgba(139,92,246,.12), transparent 42%);
      z-index:0;
    }
    .hero-bg{
      position:absolute;
      inset:0;
      background-size:cover;
      background-position:center;
      opacity:.16;
      filter:saturate(.9) contrast(1.05);
      transform:scale(1.02);
      z-index:-1;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
      gap:28px;
      align-items:stretch;
      position:relative;
      z-index:1;
    }
    .hero-copy{
      padding:28px 0 8px;
      max-width:720px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 14px;
      border-radius:999px;
      background:rgba(52,209,209,.08);
      border:1px solid rgba(52,209,209,.18);
      color:#c7ffff;
      font-size:13px;
      font-weight:600;
      letter-spacing:.3px;
      margin-bottom:18px;
    }
    .hero-copy h1{
      margin:0;
      font-size:clamp(32px, 4.2vw, 58px);
      line-height:1.08;
      letter-spacing:-.03em;
      max-width:10.5ch;
    }
    .hero-copy p{
      margin:18px 0 0;
      color:#c8ceda;
      font-size:16px;
      line-height:1.9;
      max-width:62ch;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }
    .hero-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:22px;
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:9px 13px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      color:#d6dce7;
      border:1px solid var(--line);
      font-size:13px;
      transition:transform var(--transition), border-color var(--transition), background var(--transition);
    }
    .chip:hover{
      transform:translateY(-1px);
      background:rgba(255,255,255,.06);
      border-color:rgba(139,92,246,.28);
    }
    .chip.dot::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:linear-gradient(135deg, var(--cyan), var(--purple));
      box-shadow:0 0 0 4px rgba(52,209,209,.08);
    }

    .hero-visual{
      display:grid;
      gap:14px;
      align-self:stretch;
      padding:8px 0 6px;
    }
    .visual-frame{
      position:relative;
      min-height:400px;
      border-radius:var(--radius-xl);
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
      box-shadow:var(--shadow);
    }
    .visual-frame img{
      width:100%;
      height:100%;
      object-fit:cover;
      filter:brightness(.72) saturate(.95);
      transform:scale(1.03);
    }
    .visual-frame::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, rgba(7,10,14,.12), rgba(7,10,14,.72)),
        radial-gradient(circle at 30% 10%, rgba(139,92,246,.26), transparent 34%);
      pointer-events:none;
    }
    .visual-copy{
      position:absolute;
      left:18px;
      right:18px;
      bottom:18px;
      z-index:2;
      display:grid;
      gap:10px;
    }
    .visual-copy .tag{
      width:max-content;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(10,13,18,.68);
      border:1px solid rgba(255,255,255,.12);
      color:#e6ebf5;
      font-size:12px;
      letter-spacing:.2px;
    }
    .visual-copy strong{
      font-size:22px;
      line-height:1.3;
      max-width:20ch;
    }
    .visual-copy p{
      margin:0;
      color:#c7cedc;
      font-size:14px;
      line-height:1.7;
      max-width:38ch;
    }
    .hero-stats{
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:14px;
    }
    .stat-box{
      padding:16px 16px 15px;
      border-radius:18px;
      background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.025));
      border:1px solid var(--line);
      box-shadow:var(--shadow-soft);
      min-height:104px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:8px;
    }
    .stat-box em{
      font-style:normal;
      color:var(--muted);
      font-size:13px;
      letter-spacing:.2px;
    }
    .stat-box strong{
      font-size:17px;
      line-height:1.35;
      color:#fff;
    }
    .stat-accent{
      color:#dffcff;
      font-weight:700;
    }

    .section{
      padding:34px 0;
      position:relative;
    }
    .section.tight-top{padding-top:18px}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:18px;
      margin-bottom:18px;
    }
    .section-title{
      display:grid;
      gap:8px;
    }
    .section-title h2{
      margin:0;
      font-size:clamp(24px, 2.4vw, 34px);
      line-height:1.18;
      letter-spacing:-.02em;
    }
    .section-title p{
      margin:0;
      color:var(--muted);
      font-size:15px;
      max-width:68ch;
    }
    .section-action{
      flex-shrink:0;
      display:flex;
      gap:10px;
      align-items:center;
      flex-wrap:wrap;
    }

    .quick-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0,1fr));
      gap:14px;
    }
    .quick-card{
      position:relative;
      padding:18px;
      border-radius:20px;
      border:1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02)),
        radial-gradient(circle at top right, rgba(139,92,246,.12), transparent 30%);
      overflow:hidden;
      min-height:172px;
      box-shadow:var(--shadow-soft);
    }
    .quick-card::after{
      content:"";
      position:absolute;
      inset:auto -20% -40% auto;
      width:120px;
      height:120px;
      background:radial-gradient(circle, rgba(52,209,209,.14), transparent 70%);
      pointer-events:none;
    }
    .quick-card .label{
      display:inline-flex;
      align-items:center;
      padding:6px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid var(--line);
      color:#dfe5f0;
      font-size:12px;
      margin-bottom:16px;
    }
    .quick-card h3{
      margin:0;
      font-size:18px;
      line-height:1.35;
      letter-spacing:-.01em;
    }
    .quick-card p{
      margin:10px 0 16px;
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
    }
    .quick-card .link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#dffcff;
      font-weight:600;
      font-size:14px;
    }
    .quick-card:hover{
      transform:translateY(-3px);
      border-color:rgba(52,209,209,.26);
      box-shadow:0 16px 36px rgba(0,0,0,.34);
    }

    .card-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:16px;
    }
    .content-card{
      overflow:hidden;
      border-radius:24px;
      border:1px solid var(--line);
      background:linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02));
      box-shadow:var(--shadow-soft);
      transition:transform var(--transition), box-shadow var(--transition), border-color var(--transition);
      display:flex;
      flex-direction:column;
      min-height:100%;
    }
    .content-card:hover{
      transform:translateY(-3px);
      border-color:rgba(139,92,246,.28);
      box-shadow:0 16px 36px rgba(0,0,0,.34);
    }
    .card-media{
      position:relative;
      aspect-ratio:16/10;
      overflow:hidden;
    }
    .card-media img{
      width:100%;
      height:100%;
      object-fit:cover;
      transform:scale(1.03);
      transition:transform .45s ease, filter .45s ease;
      filter:brightness(.8) saturate(.95);
    }
    .content-card:hover .card-media img{
      transform:scale(1.08);
    }
    .card-media::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(9,11,16,.08), rgba(9,11,16,.7));
      pointer-events:none;
    }
    .card-body{
      display:grid;
      gap:12px;
      padding:18px;
    }
    .card-badges{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:6px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid var(--line);
      color:#d8deea;
      font-size:12px;
      line-height:1;
    }
    .badge.hot{
      background:rgba(255,93,93,.12);
      border-color:rgba(255,93,93,.26);
      color:#ffd6d6;
    }
    .badge.cyan{
      background:rgba(52,209,209,.12);
      border-color:rgba(52,209,209,.26);
      color:#d7ffff;
    }
    .badge.purple{
      background:rgba(139,92,246,.14);
      border-color:rgba(139,92,246,.28);
      color:#e9dcff;
    }
    .card-body h3{
      margin:0;
      font-size:19px;
      line-height:1.35;
      letter-spacing:-.01em;
    }
    .card-body p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
      min-height:5.4em;
    }
    .card-meta{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding-top:2px;
      color:#9ba5b8;
      font-size:12px;
    }
    .card-meta .time{
      display:inline-flex;
      align-items:center;
      gap:6px;
    }
    .card-meta .time::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--green);
      box-shadow:0 0 0 4px rgba(74,222,128,.08);
    }
    .card-cta{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#dffcff;
      font-weight:600;
      font-size:14px;
    }

    .split-grid{
      display:grid;
      grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);
      gap:16px;
      align-items:stretch;
    }
    .panel{
      border-radius:24px;
      border:1px solid var(--line);
      background:linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02));
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .panel-head{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      padding:18px 18px 0;
    }
    .panel-head h3{
      margin:0;
      font-size:20px;
      line-height:1.25;
    }
    .panel-head span{
      color:var(--muted);
      font-size:13px;
    }
    .focus-list{
      padding:10px 18px 18px;
      display:grid;
      gap:12px;
    }
    .focus-item{
      display:flex;
      gap:14px;
      align-items:flex-start;
      padding:14px;
      border-radius:18px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.05);
      transition:transform var(--transition), border-color var(--transition), background var(--transition);
    }
    .focus-item:hover{
      transform:translateY(-2px);
      border-color:rgba(52,209,209,.22);
      background:rgba(255,255,255,.05);
    }
    .focus-index{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      flex-shrink:0;
      color:#fff;
      font-weight:800;
      letter-spacing:.3px;
      background:linear-gradient(135deg, rgba(139,92,246,.95), rgba(52,209,209,.75));
      box-shadow:0 10px 22px rgba(139,92,246,.18);
    }
    .focus-content h4{
      margin:0 0 6px;
      font-size:16px;
      line-height:1.35;
    }
    .focus-content p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
    }

    .trend-panel{
      padding:18px;
      display:grid;
      gap:18px;
    }
    .trend-cover{
      border-radius:20px;
      overflow:hidden;
      aspect-ratio:16/10;
      position:relative;
      border:1px solid rgba(255,255,255,.06);
    }
    .trend-cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      filter:brightness(.76) saturate(.95);
    }
    .trend-cover::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(9,11,16,.06), rgba(9,11,16,.66));
    }
    .trend-copy{
      display:grid;
      gap:12px;
    }
    .trend-copy h4{
      margin:0;
      font-size:18px;
      line-height:1.35;
    }
    .trend-copy p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
    }
    .trend-bars{
      display:grid;
      gap:12px;
    }
    .bar-row{
      display:grid;
      gap:8px;
    }
    .bar-row .row-head{
      display:flex;
      justify-content:space-between;
      gap:12px;
      color:#d7deea;
      font-size:13px;
    }
    .bar{
      height:10px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      overflow:hidden;
      position:relative;
      border:1px solid rgba(255,255,255,.05);
    }
    .bar span{
      display:block;
      height:100%;
      width:var(--w, 50%);
      border-radius:inherit;
      background:linear-gradient(90deg, var(--cyan), var(--purple));
      box-shadow:0 0 18px rgba(52,209,209,.24);
    }
    .mini-pills{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .mini-pill{
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
      color:#d9e0ec;
      font-size:12px;
    }

    .category-grid{
      display:grid;
      grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);
      gap:16px;
      align-items:stretch;
    }
    .category-feature{
      display:grid;
      grid-template-columns:1fr;
      overflow:hidden;
    }
    .category-feature .card-media{
      aspect-ratio:16/8.2;
    }
    .category-feature .card-body{
      gap:14px;
      padding:20px;
    }
    .stack-list{
      display:grid;
      gap:12px;
      padding:18px;
    }
    .stack-item{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px;
      border-radius:18px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.05);
    }
    .stack-dot{
      width:12px;
      height:12px;
      border-radius:50%;
      margin-top:6px;
      background:linear-gradient(135deg, var(--orange), var(--red));
      box-shadow:0 0 0 4px rgba(255,159,67,.09);
      flex-shrink:0;
    }
    .stack-item strong{
      display:block;
      font-size:15px;
      line-height:1.45;
      margin-bottom:4px;
    }
    .stack-item span{
      color:var(--muted);
      font-size:13px;
      line-height:1.7;
    }

    .faq-grid{
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:14px;
    }
    .faq-item{
      border-radius:18px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.03);
      overflow:hidden;
      box-shadow:var(--shadow-soft);
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:16px 18px;
      font-weight:600;
      color:#eef2fb;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";
      width:28px;
      height:28px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.05);
      border:1px solid var(--line);
      color:#dfe5f0;
      flex-shrink:0;
      transition:transform var(--transition), background var(--transition);
    }
    .faq-item[open] summary::after{
      content:"–";
      background:rgba(52,209,209,.1);
      border-color:rgba(52,209,209,.24);
      transform:rotate(0deg);
    }
    .faq-item .answer{
      padding:0 18px 18px;
      color:var(--muted);
      font-size:14px;
      line-height:1.82;
    }

    .cta{
      padding:26px 0 46px;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      border:1px solid rgba(139,92,246,.24);
      background:
        linear-gradient(135deg, rgba(139,92,246,.2), rgba(52,209,209,.12)),
        linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
      box-shadow:0 22px 60px rgba(0,0,0,.34);
      padding:28px;
    }
    .cta-box::before{
      content:"";
      position:absolute;
      inset:auto -10% -30% auto;
      width:300px;
      height:300px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(52,209,209,.14), transparent 65%);
      pointer-events:none;
    }
    .cta-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      position:relative;
      z-index:1;
    }
    .cta-text{
      max-width:720px;
      display:grid;
      gap:10px;
    }
    .cta-text h2{
      margin:0;
      font-size:clamp(24px, 2.7vw, 36px);
      line-height:1.18;
    }
    .cta-text p{
      margin:0;
      color:#e5ebf5;
      opacity:.9;
      font-size:15px;
      line-height:1.8;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-shrink:0;
      flex-wrap:wrap;
      justify-content:flex-end;
    }

    .site-footer{
      position:relative;
      z-index:1;
      padding:34px 0 26px;
      border-top:1px solid var(--line);
      background:rgba(7,9,13,.9);
      backdrop-filter:blur(14px);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.1fr .7fr .7fr;
      gap:20px;
      padding-bottom:20px;
    }
    .footer-brand{
      display:grid;
      gap:12px;
    }
    .footer-brand p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.85;
      max-width:42ch;
    }
    .footer-col h3{
      margin:0 0 12px;
      font-size:15px;
      line-height:1.2;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:var(--muted);
      font-size:14px;
      width:max-content;
    }
    .footer-links a:hover{
      color:#fff;
    }
    .footer-note{
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:12px;
      padding-top:18px;
      border-top:1px solid var(--line);
      color:var(--soft);
      font-size:13px;
      line-height:1.7;
    }
    .back-top{
      color:#dffcff;
      font-weight:600;
    }

    .section-divider{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(255,255,255,.12), transparent);
      margin:0;
      border:0;
    }

    @media (max-width: 1100px){
      .hero-grid,
      .split-grid,
      .category-grid{
        grid-template-columns:1fr;
      }
      .hero-copy{
        max-width:none;
      }
      .visual-frame{
        min-height:360px;
      }
      .card-grid,
      .quick-grid{
        grid-template-columns:repeat(2, minmax(0,1fr));
      }
      .footer-grid{
        grid-template-columns:1fr 1fr;
      }
    }

    @media (max-width: 900px){
      .header-inner{
        flex-wrap:wrap;
      }
      .header-tools{
        width:100%;
        margin-left:0;
        flex-wrap:wrap;
      }
      .site-nav{
        width:100%;
        justify-content:flex-start;
      }
      .search-form{
        width:100%;
        min-width:0;
      }
      .faq-grid{
        grid-template-columns:1fr;
      }
    }

    @media (max-width: 768px){
      .announcement-inner{
        flex-direction:column;
        align-items:flex-start;
      }
      .nav-toggle{
        display:inline-flex;
      }
      .site-nav,
      .search-form{
        display:none;
      }
      .site-header.open .site-nav,
      .site-header.open .search-form{
        display:flex;
      }
      .site-header.open .header-tools{
        width:100%;
        padding-top:4px;
      }
      .site-header.open .site-nav{
        flex-wrap:wrap;
        border-radius:20px;
      }
      .site-header.open .nav-link{
        flex:1 1 auto;
        justify-content:center;
      }
      .hero{
        padding-top:22px;
      }
      .card-grid,
      .quick-grid{
        grid-template-columns:1fr;
      }
      .hero-actions,
      .cta-actions{
        width:100%;
      }
      .hero-actions .btn,
      .cta-actions .btn{
        flex:1 1 180px;
      }
      .hero-stats{
        grid-template-columns:1fr;
      }
      .section-head,
      .cta-inner{
        flex-direction:column;
        align-items:flex-start;
      }
      .section-action{
        width:100%;
      }
      .footer-grid{
        grid-template-columns:1fr;
      }
    }

    @media (max-width: 520px){
      .container{
        width:min(var(--container), calc(100% - 22px));
      }
      .announcement-inner{
        gap:10px;
      }
      .brand-text small{
        display:none;
      }
      .hero-copy h1{
        max-width:12ch;
        font-size:clamp(28px, 8.2vw, 42px);
      }
      .visual-copy strong{
        font-size:20px;
      }
      .panel-head,
      .focus-list,
      .stack-list,
      .trend-panel,
      .card-body,
      .cta-box{
        padding-left:16px;
        padding-right:16px;
      }
      .cta-box{
        padding-top:22px;
        padding-bottom:22px;
      }
      .nav-link{
        width:100%;
      }
    }

/* roulang page: category1 */
:root{
  --bg:#0b0d10;
  --bg-soft:#11151b;
  --surface:#151a22;
  --surface-2:#1a2030;
  --surface-3:#20283a;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#f2f5fb;
  --muted:#a7afbf;
  --muted-2:#7d8799;
  --purple:#8b5cf6;
  --purple-2:#a78bfa;
  --cyan:#21d4fd;
  --cyan-2:#61f2ff;
  --red:#ff6a57;
  --orange:#ff9a54;
  --ok:#32d583;
  --shadow:0 18px 50px rgba(0,0,0,.38);
  --shadow-soft:0 10px 28px rgba(0,0,0,.24);
  --radius:18px;
  --radius-sm:12px;
  --radius-lg:26px;
  --container:1180px;
  --gap:24px;
  --gap-sm:16px;
  --transition:220ms cubic-bezier(.2,.8,.2,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
  line-height:1.65;
  background:
    radial-gradient(circle at 20% 10%, rgba(139,92,246,.12), transparent 28%),
    radial-gradient(circle at 80% 15%, rgba(33,212,253,.10), transparent 24%),
    radial-gradient(circle at 55% 80%, rgba(255,106,87,.08), transparent 22%),
    linear-gradient(180deg, #090b0e 0%, #0b0d10 45%, #0f1217 100%);
  min-height:100vh;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px);
  background-size:72px 72px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.95), rgba(0,0,0,.35));
  opacity:.23;
  z-index:-1;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit}
button{cursor:pointer}
::selection{background:rgba(139,92,246,.35);color:#fff}

.container{
  width:min(var(--container), calc(100% - 32px));
  margin:0 auto;
}

.site-header{
  position:sticky;
  top:0;
  z-index:100;
  backdrop-filter:blur(18px);
  background:linear-gradient(180deg, rgba(9,11,14,.92) 0%, rgba(9,11,14,.78) 100%);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  padding:14px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:0;
}
.brand-mark{
  width:48px;
  height:48px;
  border-radius:16px;
  display:grid;
  place-items:center;
  background:
    linear-gradient(135deg, rgba(139,92,246,.92), rgba(33,212,253,.82));
  box-shadow:0 12px 30px rgba(139,92,246,.22);
  position:relative;
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:1px;
  border-radius:15px;
  background:linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,0));
  pointer-events:none;
}
.brand-mark span{
  position:relative;
  z-index:1;
  font-size:13px;
  font-weight:800;
  letter-spacing:.12em;
}
.brand-text{min-width:0}
.brand-text strong{
  display:block;
  font-size:16px;
  font-weight:800;
  letter-spacing:.02em;
  line-height:1.2;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.brand-text small{
  display:block;
  margin-top:3px;
  color:var(--muted);
  font-size:12px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.header-tools{
  display:flex;
  align-items:center;
  gap:16px;
  margin-left:auto;
}
.site-nav{
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px;
  border:1px solid rgba(255,255,255,.07);
  border-radius:999px;
  background:rgba(255,255,255,.03);
}
.nav-link{
  padding:10px 16px;
  border-radius:999px;
  color:var(--muted);
  font-size:14px;
  line-height:1;
  transition:all var(--transition);
}
.nav-link:hover,
.nav-link:focus-visible{
  color:var(--text);
  background:rgba(255,255,255,.06);
  outline:none;
}
.nav-link.active{
  color:#fff;
  background:linear-gradient(135deg, rgba(139,92,246,.9), rgba(33,212,253,.72));
  box-shadow:0 10px 24px rgba(139,92,246,.24);
}
.search-form{
  display:flex;
  align-items:center;
  gap:10px;
}
.search-field{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:320px;
  padding:12px 14px;
  border:1px solid rgba(255,255,255,.08);
  border-radius:14px;
  background:rgba(255,255,255,.04);
  transition:all var(--transition);
}
.search-field:focus-within{
  border-color:rgba(33,212,253,.45);
  box-shadow:0 0 0 4px rgba(33,212,253,.12);
  background:rgba(255,255,255,.055);
}
.search-ico{
  width:14px;
  height:14px;
  border:2px solid rgba(255,255,255,.56);
  border-radius:50%;
  position:relative;
  flex:0 0 auto;
}
.search-ico::after{
  content:"";
  position:absolute;
  width:8px;
  height:2px;
  right:-6px;
  bottom:-3px;
  transform:rotate(45deg);
  background:rgba(255,255,255,.56);
  border-radius:999px;
}
.search-field input{
  width:100%;
  background:transparent;
  border:none;
  color:var(--text);
  outline:none;
}
.search-field input::placeholder{color:var(--muted-2)}
.btn{
  border:none;
  border-radius:13px;
  padding:12px 18px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-weight:700;
  letter-spacing:.01em;
  transition:all var(--transition);
  white-space:nowrap;
}
.btn:focus-visible{
  outline:none;
  box-shadow:0 0 0 4px rgba(139,92,246,.2);
}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg, var(--purple), var(--cyan));
  box-shadow:0 14px 28px rgba(139,92,246,.24);
}
.btn-primary:hover{
  transform:translateY(-1px);
  box-shadow:0 18px 34px rgba(139,92,246,.28);
}
.btn-secondary{
  color:#fff;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.05);
}
.btn-secondary:hover{
  transform:translateY(-1px);
  border-color:rgba(33,212,253,.30);
  background:rgba(255,255,255,.08);
}
.btn-ghost{
  color:var(--text);
  border:1px solid rgba(255,255,255,.08);
  background:transparent;
}
.btn-ghost:hover{
  border-color:rgba(139,92,246,.38);
  background:rgba(139,92,246,.08);
}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:46px;
  height:46px;
  border:1px solid rgba(255,255,255,.10);
  border-radius:14px;
  background:rgba(255,255,255,.04);
  align-items:center;
  justify-content:center;
  padding:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  display:block;
  width:18px;
  height:2px;
  border-radius:999px;
  background:#fff;
  position:relative;
  transition:all var(--transition);
}
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:0;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

main{display:block}

.category-hero{
  position:relative;
  overflow:hidden;
  padding:28px 0 18px;
}
.category-hero .hero-panel{
  position:relative;
  border:1px solid rgba(255,255,255,.08);
  border-radius:28px;
  background:
    linear-gradient(180deg, rgba(10,12,16,.76) 0%, rgba(10,12,16,.92) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  box-shadow:var(--shadow);
  overflow:hidden;
}
.category-hero .hero-panel::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 15% 20%, rgba(139,92,246,.24), transparent 26%),
    radial-gradient(circle at 82% 22%, rgba(33,212,253,.16), transparent 22%),
    linear-gradient(135deg, rgba(255,255,255,.02), rgba(255,255,255,0));
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:1.18fr .92fr;
  gap:26px;
  padding:30px;
  align-items:center;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
  color:var(--muted);
  font-size:13px;
  margin-bottom:16px;
}
.breadcrumb a{
  color:var(--muted);
  transition:color var(--transition);
}
.breadcrumb a:hover,
.breadcrumb a:focus-visible{
  color:#fff;
  outline:none;
}
.breadcrumb span{
  color:rgba(255,255,255,.28);
}
.hero-copy .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.05);
  color:#dbe6ff;
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.hero-copy h1{
  margin:0;
  font-size:clamp(30px, 4vw, 54px);
  line-height:1.06;
  letter-spacing:-.03em;
}
.hero-copy .lead{
  margin:18px 0 0;
  max-width:58ch;
  color:#d8deea;
  font-size:16px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:20px 0 26px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 13px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.09);
  background:rgba(255,255,255,.04);
  color:#edf2ff;
  font-size:13px;
  transition:all var(--transition);
}
.tag:hover{
  transform:translateY(-1px);
  border-color:rgba(33,212,253,.28);
  background:rgba(33,212,253,.08);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}

.hero-side{
  display:grid;
  gap:14px;
}
.hero-visual{
  margin:0;
  border-radius:22px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.10);
  background:var(--surface);
  box-shadow:var(--shadow-soft);
}
.hero-visual img{
  width:100%;
  aspect-ratio:1.28/1;
  object-fit:cover;
  filter:saturate(1.02) contrast(1.02);
  transform:scale(1.01);
}
.hero-visual .caption{
  padding:14px 16px 16px;
  background:linear-gradient(180deg, rgba(21,26,34,.38), rgba(21,26,34,.92));
}
.hero-visual .caption strong{
  display:block;
  font-size:15px;
}
.hero-visual .caption p{
  margin:6px 0 0;
  color:var(--muted);
  font-size:13px;
}

.stat-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:12px;
}
.stat-card{
  padding:16px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.08);
  background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
}
.stat-card b{
  display:block;
  font-size:22px;
  line-height:1;
  letter-spacing:-.02em;
}
.stat-card span{
  display:block;
  margin-top:8px;
  color:var(--muted);
  font-size:12px;
}

.section{
  padding:18px 0 6px;
}
.section-head{
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:16px;
  margin:0 0 16px;
}
.section-head h2{
  margin:0;
  font-size:24px;
  line-height:1.18;
  letter-spacing:-.02em;
}
.section-head p{
  margin:0;
  color:var(--muted);
  max-width:62ch;
  font-size:14px;
}
.section-kicker{
  color:var(--cyan-2);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  margin-bottom:10px;
}

.filter-strip{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  padding:14px;
  border-radius:20px;
  border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.035);
}
.filter-label{
  color:var(--muted);
  font-size:13px;
  margin-right:4px;
}
.filter-group{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.filter-chip{
  border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.03);
  color:var(--text);
  padding:10px 14px;
  border-radius:999px;
  font-size:13px;
  transition:all var(--transition);
}
.filter-chip:hover,
.filter-chip:focus-visible{
  outline:none;
  transform:translateY(-1px);
  border-color:rgba(33,212,253,.26);
  background:rgba(33,212,253,.08);
}
.filter-chip.active{
  background:linear-gradient(135deg, rgba(139,92,246,.92), rgba(33,212,253,.78));
  border-color:transparent;
  box-shadow:0 12px 24px rgba(33,212,253,.12);
}
.filter-note{
  margin-left:auto;
  color:var(--muted-2);
  font-size:12px;
}

.quick-grid{
  display:grid;
  grid-template-columns:repeat(3, minmax(0, 1fr));
  gap:18px;
}
.quick-card{
  position:relative;
  overflow:hidden;
  padding:20px;
  border-radius:22px;
  border:1px solid rgba(255,255,255,.08);
  background:
    linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  box-shadow:var(--shadow-soft);
  transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.quick-card::before{
  content:"";
  position:absolute;
  inset:auto -20px -24px auto;
  width:120px;
  height:120px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(139,92,246,.28), transparent 66%);
  pointer-events:none;
}
.quick-card:hover{
  transform:translateY(-3px);
  border-color:rgba(139,92,246,.26);
  box-shadow:0 18px 36px rgba(0,0,0,.34);
}
.quick-card .tag{
  margin-bottom:12px;
  padding:7px 12px;
  background:rgba(255,255,255,.05);
}
.quick-card h3{
  margin:0;
  font-size:18px;
}
.quick-card p{
  margin:10px 0 0;
  color:var(--muted);
  font-size:14px;
}
.quick-card .btn{
  margin-top:16px;
}

.page-grid{
  display:grid;
  grid-template-columns:minmax(0, 1.18fr) 330px;
  gap:24px;
  margin-top:26px;
}
.main-col{
  min-width:0;
  display:grid;
  gap:22px;
}
.side-col{
  min-width:0;
  position:sticky;
  top:92px;
  align-self:start;
  display:grid;
  gap:16px;
}
.card-section{
  padding:22px;
  border:1px solid rgba(255,255,255,.08);
  border-radius:24px;
  background:linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02));
  box-shadow:var(--shadow-soft);
}
.topic-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:18px;
}
.topic-card{
  overflow:hidden;
  border-radius:20px;
  border:1px solid rgba(255,255,255,.08);
  background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  box-shadow:var(--shadow-soft);
  transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.topic-card:hover{
  transform:translateY(-3px);
  border-color:rgba(33,212,253,.24);
  box-shadow:0 18px 34px rgba(0,0,0,.34);
}
.topic-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
}
.topic-thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(3,5,8,.04), rgba(3,5,8,.58));
  pointer-events:none;
}
.topic-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(1.02) contrast(1.03);
}
.topic-body{
  padding:18px;
}
.topic-head{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 10px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  color:#eef3ff;
  border:1px solid rgba(255,255,255,.08);
  font-size:12px;
}
.topic-body h3{
  margin:12px 0 0;
  font-size:18px;
  line-height:1.28;
}
.topic-body p{
  margin:10px 0 0;
  color:var(--muted);
  font-size:14px;
  min-height:3.1em;
}
.topic-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid rgba(255,255,255,.08);
}
.meta-list{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.meta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:#dbe4f6;
  font-size:12px;
}
.meta i{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 4px rgba(33,212,253,.14);
}
.topic-action{
  color:#fff;
  font-size:13px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  gap:8px;
  white-space:nowrap;
}
.topic-action::after{
  content:"→";
  color:var(--cyan-2);
}

.timeline{
  display:grid;
  gap:14px;
}
.timeline-item{
  display:grid;
  grid-template-columns:88px minmax(0, 1fr);
  gap:14px;
  align-items:start;
  padding:16px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.03);
}
.timeline-time{
  display:flex;
  flex-direction:column;
  gap:6px;
}
.timeline-time strong{
  font-size:18px;
  line-height:1;
}
.timeline-time span{
  color:var(--muted-2);
  font-size:12px;
}
.timeline-body h4{
  margin:0;
  font-size:16px;
}
.timeline-body p{
  margin:7px 0 0;
  color:var(--muted);
  font-size:13px;
}
.timeline-body .badge{
  margin-top:10px;
}

.panel{
  padding:18px;
  border-radius:20px;
  border:1px solid rgba(255,255,255,.08);
  background:
    linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  box-shadow:var(--shadow-soft);
}
.panel + .panel{margin-top:16px}
.panel h3{
  margin:0 0 10px;
  font-size:17px;
}
.panel p{
  margin:0;
  color:var(--muted);
  font-size:14px;
}
.rank-list{
  list-style:none;
  padding:0;
  margin:16px 0 0;
  display:grid;
  gap:12px;
}
.rank-list li{
  display:grid;
  grid-template-columns:28px minmax(0, 1fr) auto;
  gap:12px;
  align-items:center;
  color:#e9efff;
  font-size:13px;
}
.rank-num{
  width:28px;
  height:28px;
  display:grid;
  place-items:center;
  border-radius:10px;
  background:rgba(139,92,246,.14);
  color:#fff;
  font-weight:800;
}
.rank-bar{
  grid-column:2 / 4;
  margin-left:40px;
  height:7px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  overflow:hidden;
}
.rank-bar span{
  display:block;
  height:100%;
  border-radius:inherit;
  background:linear-gradient(90deg, var(--purple), var(--cyan));
}
.hint-list{
  list-style:none;
  padding:0;
  margin:14px 0 0;
  display:grid;
  gap:10px;
}
.hint-list li{
  position:relative;
  padding-left:16px;
  color:var(--muted);
  font-size:13px;
}
.hint-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 0 4px rgba(255,154,84,.12);
}
.callout{
  display:flex;
  flex-direction:column;
  gap:12px;
  align-items:flex-start;
  padding:24px;
  border-radius:24px;
  border:1px solid rgba(255,255,255,.08);
  background:
    linear-gradient(135deg, rgba(139,92,246,.16), rgba(33,212,253,.08)),
    rgba(255,255,255,.03);
  box-shadow:var(--shadow-soft);
}
.callout h2{
  margin:0;
  font-size:24px;
  line-height:1.18;
}
.callout p{
  margin:0;
  max-width:70ch;
  color:#d7deea;
}
.callout .actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}

.faq-section{
  padding:24px 0 8px;
}
.faq-grid{
  display:grid;
  gap:14px;
}
.faq-item{
  border-radius:18px;
  border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.03);
  overflow:hidden;
}
.faq-item summary{
  list-style:none;
  padding:18px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  cursor:pointer;
  font-weight:700;
  transition:background var(--transition);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{
  background:rgba(255,255,255,.04);
}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  width:30px;
  height:30px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:18px;
  transition:transform var(--transition), background var(--transition);
}
.faq-item[open] summary::after{
  content:"–";
  background:rgba(139,92,246,.18);
}
.faq-item .answer{
  padding:0 20px 18px;
  color:var(--muted);
}
.faq-item .answer p{
  margin:0;
}
.faq-item .answer p + p{margin-top:10px}

.side-box{
  padding:18px;
  border-radius:20px;
  border:1px solid rgba(255,255,255,.08);
  background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  box-shadow:var(--shadow-soft);
}
.side-box h3{
  margin:0 0 12px;
  font-size:17px;
}
.side-box p{
  margin:0;
  color:var(--muted);
  font-size:14px;
}
.side-box .small{
  color:var(--muted-2);
  font-size:12px;
}
.hot-list{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:12px;
}
.hot-list li{
  display:grid;
  grid-template-columns:auto minmax(0, 1fr) auto;
  gap:12px;
  align-items:center;
  padding:12px 0;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.hot-list li:last-child{border-bottom:none}
.hot-order{
  width:30px;
  height:30px;
  display:grid;
  place-items:center;
  border-radius:10px;
  background:rgba(33,212,253,.14);
  color:#fff;
  font-weight:800;
}
.hot-text{
  min-width:0;
}
.hot-text strong{
  display:block;
  font-size:13px;
  line-height:1.35;
}
.hot-text span{
  display:block;
  margin-top:4px;
  color:var(--muted-2);
  font-size:12px;
}
.hot-rate{
  font-size:12px;
  color:#fff;
  padding:6px 10px;
  border-radius:999px;
  background:rgba(139,92,246,.14);
  border:1px solid rgba(139,92,246,.18);
}
.footer{
  margin-top:26px;
  padding:24px 0 30px;
}
.site-footer{
  border-top:1px solid rgba(255,255,255,.08);
  background:
    linear-gradient(180deg, rgba(10,12,16,.08), rgba(10,12,16,.96)),
    radial-gradient(circle at 30% 0%, rgba(139,92,246,.12), transparent 30%);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.35fr .9fr .9fr;
  gap:24px;
  padding:28px 0 20px;
}
.footer-brand p{
  margin:16px 0 0;
  color:var(--muted);
  max-width:42ch;
  font-size:14px;
}
.footer-col h3{
  margin:0 0 12px;
  font-size:16px;
}
.footer-links{
  display:grid;
  gap:10px;
}
.footer-links a{
  color:var(--muted);
  font-size:14px;
  transition:color var(--transition), transform var(--transition);
}
.footer-links a:hover,
.footer-links a:focus-visible{
  color:#fff;
  transform:translateX(2px);
  outline:none;
}
.footer-note{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:16px 0 0;
  border-top:1px solid rgba(255,255,255,.06);
  color:var(--muted-2);
  font-size:12px;
}

.skip-link{
  position:absolute;
  left:-999px;
  top:auto;
  width:1px;
  height:1px;
  overflow:hidden;
}
.skip-link:focus{
  left:16px;
  top:16px;
  width:auto;
  height:auto;
  padding:10px 14px;
  border-radius:12px;
  z-index:9999;
  background:#111722;
  color:#fff;
  box-shadow:var(--shadow-soft);
}

@media (max-width: 1120px){
  .hero-inner{grid-template-columns:1fr}
  .page-grid{grid-template-columns:1fr}
  .side-col{position:static}
}
@media (max-width: 920px){
  .quick-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width: 768px){
  .header-inner{
    flex-wrap:wrap;
    gap:12px;
  }
  .nav-toggle{display:inline-flex}
  .header-tools{
    display:none;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:12px;
    padding-bottom:8px;
  }
  .site-header.nav-open .header-tools{display:flex}
  .site-nav{
    justify-content:space-between;
    width:100%;
  }
  .search-form{
    width:100%;
    flex-direction:column;
    align-items:stretch;
  }
  .search-field{min-width:0;width:100%}
  .search-form .btn{width:100%}
  .hero-inner{padding:22px}
  .hero-copy h1{font-size:clamp(28px, 7vw, 42px)}
  .section-head{
    flex-direction:column;
    align-items:flex-start;
  }
  .filter-strip{
    align-items:flex-start;
  }
  .filter-note{
    margin-left:0;
    width:100%;
  }
  .timeline-item{
    grid-template-columns:1fr;
  }
  .timeline-time{
    flex-direction:row;
    align-items:baseline;
    justify-content:space-between;
  }
  .footer-note{
    flex-direction:column;
    align-items:flex-start;
  }
}
@media (max-width: 520px){
  .container{width:min(var(--container), calc(100% - 24px))}
  .hero-inner{padding:18px}
  .card-section,
  .side-box,
  .callout,
  .quick-card,
  .topic-body,
  .topic-card{
    border-radius:18px;
  }
  .stat-grid{grid-template-columns:1fr}
  .hero-actions,
  .callout .actions{
    flex-direction:column;
    width:100%;
  }
  .hero-actions .btn,
  .callout .actions .btn{
    width:100%;
  }
  .filter-chip{width:100%; justify-content:center}
}