/* roulang page: index */
:root{
      --bg: #0a0f15;
      --bg-soft: #101823;
      --panel: #121b26;
      --panel-2: #162233;
      --line: rgba(255,255,255,.08);
      --line-strong: rgba(255,255,255,.14);
      --text: #edf4ff;
      --muted: #9eb0c5;
      --faint: #73849a;
      --brand: #17e7c3;
      --brand-2: #8cff59;
      --brand-3: #ff5ca8;
      --brand-4: #ff9f43;
      --shadow: 0 18px 40px rgba(0,0,0,.34);
      --shadow-soft: 0 10px 24px rgba(0,0,0,.22);
      --r-lg: 18px;
      --r-md: 14px;
      --r-sm: 10px;
      --space: clamp(18px, 2.4vw, 30px);
      --content: 1280px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:
        linear-gradient(180deg, rgba(18,27,38,.92), rgba(10,15,21,1) 22%),
        linear-gradient(135deg, rgba(23,231,195,.06), transparent 36%),
        linear-gradient(225deg, rgba(255,92,168,.06), transparent 42%);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
      line-height:1.7;
      letter-spacing:0;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:
        linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px) 0 0 / 100% 84px,
        linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px) 0 0 / 84px 100%;
      opacity:.22;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.35) 76%, transparent);
    }
    a{
      color:inherit;
      text-decoration:none;
      transition:color .18s ease, opacity .18s ease, transform .18s ease, border-color .18s ease, background-color .18s ease;
    }
    img{max-width:100%;display:block}
    button,input,select,textarea{
      font:inherit;
      color:inherit;
    }
    button{
      cursor:pointer;
    }
    :focus-visible{
      outline:2px solid rgba(23,231,195,.9);
      outline-offset:2px;
    }
    .site-shell{
      position:relative;
      z-index:1;
    }
    .container-wrap{
      width:min(var(--content), calc(100% - 32px));
      margin:0 auto;
    }
    .topbar{
      position:sticky;
      top:0;
      z-index:40;
      backdrop-filter: blur(14px);
      background: rgba(10,15,21,.72);
      border-bottom:1px solid rgba(255,255,255,.06);
    }
    .topbar-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      min-height:76px;
      padding:14px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      white-space:nowrap;
    }
    .brand-mark{
      width:14px;
      height:14px;
      border-radius:999px;
      background:linear-gradient(135deg, var(--brand), var(--brand-3));
      box-shadow:0 0 0 6px rgba(23,231,195,.08);
      flex:none;
    }
    .brand-name{
      font-weight:700;
      letter-spacing:0;
      font-size:1rem;
      color:var(--text);
      max-width:100%;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-sub{
      display:block;
      font-size:.78rem;
      color:var(--faint);
      line-height:1.1;
      margin-top:2px;
    }
    .site-nav{
      display:flex;
      align-items:center;
      gap:24px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .nav-link{
      position:relative;
      color:var(--muted);
      font-size:.96rem;
      padding:10px 0;
      white-space:nowrap;
    }
    .nav-link:hover{color:var(--text)}
    .nav-link.is-active{
      color:var(--text);
    }
    .nav-link.is-active::after{
      content:"";
      position:absolute;
      left:0;
      right:0;
      bottom:4px;
      height:2px;
      border-radius:999px;
      background:linear-gradient(90deg, var(--brand), var(--brand-3));
    }
    .nav-toggle{
      display:none;
      align-items:center;
      justify-content:center;
      width:44px;
      height:44px;
      border:1px solid var(--line);
      border-radius:12px;
      background:rgba(255,255,255,.03);
      color:var(--text);
    }
    .hero{
      padding: clamp(34px, 5vw, 64px) 0 clamp(30px, 4vw, 52px);
    }
    .hero-frame{
      position:relative;
      border:1px solid var(--line);
      border-radius:24px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01)),
        linear-gradient(135deg, rgba(23,231,195,.05), rgba(255,92,168,.03) 45%, rgba(255,159,67,.04));
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .hero-frame::before,
    .hero-frame::after{
      content:"";
      position:absolute;
      inset:auto 0 0 0;
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(255,255,255,.18), transparent);
    }
    .hero-frame::after{
      inset:0 auto 0 0;
      width:1px;
      height:auto;
      background:linear-gradient(180deg, transparent, rgba(255,255,255,.18), transparent);
    }
    .hero-grid{
      display:grid;
      grid-template-columns: minmax(0, 1.25fr) minmax(320px, .95fr);
      gap:0;
    }
    .hero-copy{
      padding: clamp(28px, 4vw, 52px);
      border-right:1px solid var(--line);
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--brand);
      font-size:.86rem;
      font-weight:700;
      text-transform:none;
      margin-bottom:16px;
    }
    .eyebrow i{
      width:16px;
      height:16px;
    }
    h1,h2,h3,p{margin:0}
    h1{
      font-size: clamp(2.2rem, 4vw, 4.15rem);
      line-height:1.08;
      letter-spacing:0;
      margin-bottom:18px;
      max-width: 11ch;
    }
    .hero-lead{
      max-width: 60ch;
      color:var(--muted);
      font-size:1.02rem;
      line-height:1.85;
      margin-bottom:24px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-bottom:24px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      border-radius:999px;
      padding:12px 18px;
      font-weight:700;
      border:1px solid transparent;
      min-height:46px;
      transition:transform .18s ease, box-shadow .18s ease, background-color .18s ease, border-color .18s ease, color .18s ease;
    }
    .btn:hover{
      transform:translateY(-1px);
    }
    .btn i{
      width:16px;
      height:16px;
      flex:none;
    }
    .btn-primary{
      color:#071017;
      background:linear-gradient(135deg, var(--brand), var(--brand-2));
      box-shadow:0 12px 24px rgba(23,231,195,.18);
    }
    .btn-primary:hover{
      box-shadow:0 16px 28px rgba(23,231,195,.24);
    }
    .btn-secondary{
      color:var(--text);
      background:rgba(255,255,255,.04);
      border-color:var(--line);
    }
    .btn-secondary:hover{
      border-color:rgba(23,231,195,.42);
      background:rgba(23,231,195,.07);
    }
    .btn-ghost{
      color:var(--muted);
      background:transparent;
      border-color:var(--line);
    }
    .btn-ghost:hover{
      color:var(--text);
      border-color:rgba(255,255,255,.22);
      background:rgba(255,255,255,.03);
    }
    .hero-metrics{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:24px;
    }
    .metric-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
      color:var(--text);
      font-size:.88rem;
      white-space:nowrap;
    }
    .metric-chip strong{
      color:var(--brand);
      font-weight:800;
    }
    .hero-note{
      display:flex;
      align-items:flex-start;
      gap:12px;
      color:var(--faint);
      font-size:.92rem;
      max-width:64ch;
      padding-top:6px;
      border-top:1px solid var(--line);
    }
    .hero-note i{
      width:18px;
      height:18px;
      color:var(--brand-2);
      flex:none;
      margin-top:2px;
    }
    .hero-aside{
      padding: clamp(22px, 3vw, 32px);
      display:flex;
      flex-direction:column;
      gap:14px;
      justify-content:space-between;
      background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01));
    }
    .matrix{
      display:grid;
      grid-template-columns:repeat(2, minmax(0, 1fr));
      gap:12px;
    }
    .matrix-card{
      min-height:132px;
      padding:16px;
      border-radius:18px;
      background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015));
      border:1px solid var(--line);
      box-shadow:var(--shadow-soft);
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .matrix-card .icon-badge{
      width:38px;
      height:38px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background:rgba(23,231,195,.12);
      color:var(--brand);
      margin-bottom:10px;
    }
    .matrix-card .icon-badge.alt{
      background:rgba(255,92,168,.12);
      color:var(--brand-3);
    }
    .matrix-card .icon-badge.warm{
      background:rgba(255,159,67,.12);
      color:var(--brand-4);
    }
    .matrix-card .icon-badge.cool{
      background:rgba(140,255,89,.12);
      color:var(--brand-2);
    }
    .matrix-card h3{
      font-size:1rem;
      line-height:1.3;
      margin-bottom:6px;
    }
    .matrix-card p{
      font-size:.86rem;
      color:var(--muted);
      line-height:1.55;
    }
    .hero-status{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      padding-top:2px;
    }
    .status-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border-radius:12px;
      border:1px solid var(--line);
      background:rgba(0,0,0,.14);
      font-size:.86rem;
      color:var(--muted);
    }
    .status-pill strong{
      color:var(--text);
      font-weight:700;
    }
    .section{
      padding: clamp(28px, 4vw, 52px) 0;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:18px;
    }
    .section-title{
      font-size: clamp(1.42rem, 2.1vw, 2.1rem);
      line-height:1.18;
      letter-spacing:0;
      margin-bottom:8px;
    }
    .section-subtitle{
      max-width:72ch;
      color:var(--muted);
      font-size:.98rem;
      line-height:1.8;
    }
    .section-tools{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:flex-end;
      margin-top:4px;
    }
    .tool-tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
      color:var(--muted);
      font-size:.86rem;
      white-space:nowrap;
    }
    .tool-tag strong{
      color:var(--text);
      font-weight:700;
    }
    .panel{
      border:1px solid var(--line);
      border-radius:var(--r-lg);
      background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .panel-inner{
      padding:22px;
    }
    .compare-wrap{
      overflow:auto;
    }
    .compare-table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      min-width:860px;
    }
    .compare-table th,
    .compare-table td{
      padding:16px 14px;
      border-bottom:1px solid var(--line);
      vertical-align:top;
      text-align:left;
      font-size:.95rem;
      line-height:1.6;
    }
    .compare-table thead th{
      color:var(--text);
      background:rgba(255,255,255,.02);
      position:sticky;
      top:0;
      z-index:1;
    }
    .compare-table tbody th{
      color:var(--text);
      width:18%;
      font-weight:700;
      background:rgba(255,255,255,.015);
    }
    .compare-table td{
      color:var(--muted);
    }
    .compare-table .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:6px 10px;
      border-radius:999px;
      font-size:.82rem;
      border:1px solid transparent;
      white-space:nowrap;
      margin-bottom:8px;
    }
    .badge.a{background:rgba(23,231,195,.12); color:#71ffe6; border-color:rgba(23,231,195,.25)}
    .badge.b{background:rgba(140,255,89,.12); color:#caff9a; border-color:rgba(140,255,89,.2)}
    .badge.c{background:rgba(255,92,168,.12); color:#ffbddc; border-color:rgba(255,92,168,.2)}
    .badge.d{background:rgba(255,159,67,.12); color:#ffd09a; border-color:rgba(255,159,67,.2)}
    .tier-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0, 1fr));
      gap:16px;
    }
    .tier-card{
      padding:20px;
      border-radius:var(--r-lg);
      border:1px solid var(--line);
      background:linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.015));
      box-shadow:var(--shadow-soft);
      transition:transform .18s ease, border-color .18s ease, background-color .18s ease;
      min-height:100%;
    }
    .tier-card:hover{
      transform:translateY(-2px);
      border-color:rgba(255,255,255,.14);
      background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.018));
    }
    .tier-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
      margin-bottom:14px;
    }
    .tier-top h3{
      font-size:1.08rem;
      line-height:1.35;
      margin-bottom:6px;
    }
    .tier-top p{
      color:var(--muted);
      font-size:.9rem;
      line-height:1.6;
    }
    .score{
      flex:none;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-width:54px;
      height:34px;
      padding:0 10px;
      border-radius:12px;
      background:rgba(23,231,195,.13);
      color:#7ef5e0;
      font-weight:800;
      font-size:.86rem;
      border:1px solid rgba(23,231,195,.22);
    }
    .tier-tags{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin:14px 0 0;
    }
    .mini-tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 10px;
      border-radius:999px;
      font-size:.8rem;
      color:var(--muted);
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
    }
    .preview-grid{
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap:18px;
    }
    .feed{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .feed-item{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:14px;
      align-items:start;
      padding:16px 18px;
      border:1px solid var(--line);
      border-radius:16px;
      background:rgba(255,255,255,.025);
    }
    .feed-time{
      display:flex;
      flex-direction:column;
      align-items:center;
      min-width:60px;
      color:var(--brand);
      font-weight:800;
      line-height:1.1;
      font-size:1rem;
    }
    .feed-time span{
      color:var(--faint);
      font-size:.72rem;
      font-weight:600;
      margin-top:4px;
    }
    .feed-content h3{
      font-size:1rem;
      line-height:1.45;
      margin-bottom:6px;
    }
    .feed-content p{
      color:var(--muted);
      font-size:.92rem;
      line-height:1.7;
    }
    .feed-meta{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .meta-chip{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:6px 9px;
      border-radius:999px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.03);
      font-size:.78rem;
      color:var(--muted);
      white-space:nowrap;
    }
    .preview-side{
      display:flex;
      flex-direction:column;
      gap:14px;
    }
    .preview-box{
      padding:18px;
      border:1px solid var(--line);
      border-radius:16px;
      background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015));
    }
    .preview-box h3{
      font-size:1rem;
      margin-bottom:10px;
    }
    .preview-list{
      display:grid;
      grid-template-columns:1fr;
      gap:10px;
    }
    .preview-row{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:11px 12px;
      border-radius:12px;
      background:rgba(0,0,0,.12);
      border:1px solid rgba(255,255,255,.06);
    }
    .preview-row strong{
      display:block;
      font-size:.92rem;
      line-height:1.35;
      margin-bottom:2px;
    }
    .preview-row small{
      color:var(--faint);
      font-size:.8rem;
    }
    .preview-status{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:6px 10px;
      border-radius:999px;
      font-size:.76rem;
      border:1px solid rgba(140,255,89,.22);
      background:rgba(140,255,89,.1);
      color:#caff9a;
      flex:none;
    }
    .share-grid{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:18px;
    }
    .share-actions{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:16px;
    }
    .share-list{
      display:grid;
      gap:12px;
    }
    .share-row{
      padding:15px 16px;
      border-radius:15px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.025);
      display:flex;
      align-items:flex-start;
      gap:12px;
    }
    .share-row i{
      width:18px;
      height:18px;
      flex:none;
      color:var(--brand);
      margin-top:2px;
    }
    .share-row h3{
      font-size:.98rem;
      margin-bottom:4px;
    }
    .share-row p{
      color:var(--muted);
      font-size:.9rem;
      line-height:1.7;
    }
    .tag-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
      color:var(--muted);
      font-size:.86rem;
    }
    .tag strong{
      color:var(--text);
      font-weight:700;
    }
    .faq-list{
      display:grid;
      gap:12px;
    }
    details.faq{
      border:1px solid var(--line);
      border-radius:16px;
      background:rgba(255,255,255,.025);
      overflow:hidden;
    }
    details.faq[open]{
      border-color:rgba(23,231,195,.24);
      background:rgba(23,231,195,.05);
    }
    details.faq summary{
      list-style:none;
      padding:16px 18px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      cursor:pointer;
      font-weight:700;
      color:var(--text);
    }
    details.faq summary::-webkit-details-marker{display:none}
    details.faq summary .sum-icon{
      width:32px;
      height:32px;
      border-radius:10px;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.05);
      border:1px solid var(--line);
      flex:none;
      transition:transform .18s ease, background-color .18s ease;
    }
    details.faq[open] summary .sum-icon{
      transform:rotate(180deg);
      background:rgba(23,231,195,.12);
    }
    .faq-body{
      padding:0 18px 18px;
      color:var(--muted);
      font-size:.94rem;
      line-height:1.85;
      max-width:78ch;
    }
    .cta{
      padding:0 0 56px;
    }
    .cta-box{
      position:relative;
      border-radius:24px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      background:
        linear-gradient(135deg, rgba(23,231,195,.16), rgba(255,92,168,.12) 52%, rgba(255,159,67,.14)),
        linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
      box-shadow:var(--shadow);
    }
    .cta-inner{
      padding: clamp(24px, 3.8vw, 40px);
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap:20px;
      align-items:center;
    }
    .cta h2{
      font-size: clamp(1.44rem, 2.2vw, 2.2rem);
      line-height:1.2;
      margin-bottom:12px;
    }
    .cta p{
      color:rgba(237,244,255,.82);
      max-width:66ch;
      line-height:1.8;
      font-size:.98rem;
      margin-bottom:18px;
    }
    .cta-points{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:18px;
    }
    .point{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border-radius:999px;
      background:rgba(6,10,16,.22);
      border:1px solid rgba(255,255,255,.16);
      color:#f2f8ff;
      font-size:.86rem;
    }
    .point i{
      width:16px;
      height:16px;
      color:#d7fff0;
      flex:none;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }
    .cta-side{
      padding:18px;
      border-radius:18px;
      background:rgba(6,10,16,.22);
      border:1px solid rgba(255,255,255,.14);
    }
    .cta-side h3{
      font-size:1rem;
      margin-bottom:10px;
    }
    .cta-side ul{
      list-style:none;
      margin:0;
      padding:0;
      display:grid;
      gap:10px;
    }
    .cta-side li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      color:rgba(237,244,255,.86);
      font-size:.92rem;
      line-height:1.7;
    }
    .cta-side li::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:999px;
      background:linear-gradient(135deg, var(--brand), var(--brand-3));
      flex:none;
      margin-top:9px;
      box-shadow:0 0 0 4px rgba(255,255,255,.04);
    }
    footer{
      padding:20px 0 36px;
      border-top:1px solid rgba(255,255,255,.08);
      color:var(--muted);
    }
    .footer-inner{
      display:flex;
      flex-wrap:wrap;
      align-items:flex-start;
      justify-content:space-between;
      gap:18px;
      padding-top:18px;
    }
    .footer-brand{
      max-width: 45ch;
    }
    .footer-brand .site-title{
      display:block;
      color:var(--text);
      font-weight:800;
      font-size:1rem;
      margin-bottom:8px;
    }
    .footer-brand p{
      color:var(--muted);
      line-height:1.8;
      font-size:.92rem;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:14px 18px;
      justify-content:flex-end;
      align-items:center;
    }
    .footer-links a{
      color:var(--muted);
      font-size:.92rem;
    }
    .footer-links a:hover{
      color:var(--text);
    }
    .footer-meta{
      margin-top:12px;
      font-size:.84rem;
      color:var(--faint);
    }
    .mobile-nav-panel{
      display:none;
    }
    .section-divider{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(255,255,255,.12), transparent);
      margin-top:10px;
    }
    @media (max-width: 1024px){
      .hero-grid,
      .preview-grid,
      .share-grid,
      .cta-inner{
        grid-template-columns:1fr;
      }
      .hero-copy{
        border-right:0;
        border-bottom:1px solid var(--line);
      }
      .tier-grid{
        grid-template-columns:repeat(2, minmax(0,1fr));
      }
      .section-head{
        align-items:flex-start;
        flex-direction:column;
      }
      .section-tools{
        justify-content:flex-start;
      }
    }
    @media (max-width: 768px){
      .topbar-inner{
        min-height:66px;
      }
      .nav-toggle{
        display:inline-flex;
      }
      .site-nav{
        display:none;
      }
      .site-nav.is-open{
        display:flex;
        position:absolute;
        left:16px;
        right:16px;
        top:100%;
        margin-top:10px;
        padding:14px 16px;
        flex-direction:column;
        align-items:flex-start;
        gap:8px;
        background:rgba(9,13,19,.96);
        border:1px solid rgba(255,255,255,.08);
        border-radius:16px;
        box-shadow:var(--shadow);
      }
      .site-nav.is-open .nav-link{
        width:100%;
        padding:10px 0;
      }
      .site-nav.is-open .nav-link.is-active::after{
        left:0;
        right:auto;
        width:64px;
      }
      .matrix{
        grid-template-columns:1fr;
      }
      .tier-grid{
        grid-template-columns:1fr;
      }
      .feed-item{
        grid-template-columns:1fr;
      }
      .feed-meta{
        justify-content:flex-start;
      }
      .compare-table{
        min-width:720px;
      }
      .topbar{
        position:sticky;
      }
    }
    @media (max-width: 520px){
      .container-wrap{
        width:min(var(--content), calc(100% - 24px));
      }
      .hero{
        padding-top:22px;
      }
      .hero-copy,
      .hero-aside,
      .panel-inner,
      .cta-inner{
        padding:18px;
      }
      h1{
        max-width: 10.5ch;
      }
      .hero-actions,
      .cta-actions,
      .share-actions{
        gap:10px;
      }
      .btn{
        width:100%;
      }
      .btn.btn-ghost,
      .btn.btn-secondary{
        width:100%;
      }
      .status-pill,
      .metric-chip,
      .tool-tag,
      .mini-tag,
      .tag{
        width:auto;
        max-width:100%;
      }
      .footer-inner{
        flex-direction:column;
      }
      .footer-links{
        justify-content:flex-start;
      }
    }

/* roulang page: category1 */
:root{
      --bg: #0b0f14;
      --bg-soft: #10161d;
      --panel: #131b24;
      --panel-2: #171f29;
      --line: rgba(255,255,255,.09);
      --line-strong: rgba(255,255,255,.16);
      --text: #edf2f7;
      --muted: #99a6b7;
      --muted-2: #708095;
      --cyan: #48e0d0;
      --green: #9ef25d;
      --pink: #ff6bb5;
      --orange: #ffb45a;
      --blue: #66a8ff;
      --shadow: 0 18px 52px rgba(0,0,0,.33);
      --shadow-soft: 0 10px 28px rgba(0,0,0,.24);
      --radius: 18px;
      --radius-sm: 12px;
      --container: 1240px;
      --gap: 24px;
      --transition: 180ms ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:
        linear-gradient(180deg, #090c11 0%, #0d1218 36%, #0b0f14 100%);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", sans-serif;
      line-height:1.72;
      letter-spacing:0;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:
        linear-gradient(180deg, rgba(255,255,255,.025) 1px, transparent 1px) 0 0 / 100% 58px,
        linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px) 0 0 / 72px 100%;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.85), rgba(0,0,0,.25) 70%, rgba(0,0,0,0));
      opacity:.55;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition: color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition), opacity var(--transition), box-shadow var(--transition);
    }
    a:hover{color:var(--text)}
    img{max-width:100%; display:block}
    button,input,select,summary{font:inherit}
    button{
      border:0;
      cursor:pointer;
      background:none;
      color:inherit;
    }
    ::selection{background:rgba(72,224,208,.24); color:#fff}
    .container-wrap{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
      position:relative;
      z-index:1;
    }
    .topbar{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter: blur(16px);
      background: rgba(10,14,19,.82);
      border-bottom:1px solid var(--line);
    }
    .topbar-inner{
      min-height:74px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:14px;
      min-width:0;
      padding:8px 0;
    }
    .brand-mark{
      width:20px;
      height:20px;
      border-radius:7px;
      background: linear-gradient(135deg, var(--cyan), var(--pink) 58%, var(--orange));
      box-shadow: 0 0 0 4px rgba(255,255,255,.03);
      flex:0 0 auto;
    }
    .brand-name{
      display:flex;
      flex-direction:column;
      min-width:0;
      font-size:17px;
      font-weight:700;
      letter-spacing:0;
      line-height:1.1;
    }
    .brand-sub{
      margin-top:4px;
      font-size:12px;
      color:var(--muted);
      font-weight:500;
    }
    .site-nav{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .nav-link{
      position:relative;
      padding:10px 12px;
      color:var(--muted);
      font-size:14px;
      font-weight:600;
      border-radius:999px;
    }
    .nav-link:hover{
      color:var(--text);
      background: rgba(255,255,255,.04);
    }
    .nav-link.is-active{
      color:var(--text);
      background: rgba(72,224,208,.08);
      box-shadow: inset 0 0 0 1px rgba(72,224,208,.18);
    }
    .nav-link.is-active::after{
      content:"";
      position:absolute;
      left:14px;
      right:14px;
      bottom:5px;
      height:2px;
      border-radius:999px;
      background: linear-gradient(90deg, var(--cyan), var(--pink));
      opacity:.85;
    }
    .nav-toggle{
      display:none;
      align-items:center;
      justify-content:center;
      width:44px;
      height:44px;
      border-radius:12px;
      color:var(--text);
      background: rgba(255,255,255,.04);
      box-shadow: inset 0 0 0 1px var(--line);
    }
    .nav-toggle:hover{background: rgba(255,255,255,.08)}
    .hero{
      padding:36px 0 18px;
    }
    .hero-shell{
      border:1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02)),
        linear-gradient(135deg, rgba(72,224,208,.08), rgba(255,107,181,.05) 42%, rgba(255,180,90,.05));
      border-radius: calc(var(--radius) + 4px);
      box-shadow: var(--shadow);
      overflow:hidden;
    }
    .hero-shell .grid-x{
      margin:0;
    }
    .hero-copy,
    .hero-rail{
      padding:30px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--cyan);
      background: rgba(72,224,208,.08);
      box-shadow: inset 0 0 0 1px rgba(72,224,208,.16);
      font-size:12px;
      font-weight:700;
      letter-spacing:0;
    }
    .eyebrow i{width:14px;height:14px}
    h1,
    h2,
    h3,
    h4{
      margin:0;
      letter-spacing:0;
      line-height:1.18;
    }
    .hero-title{
      margin-top:16px;
      max-width:10.2em;
      font-size:clamp(34px, 4.2vw, 60px);
      font-weight:800;
    }
    .hero-title .accent{
      background: linear-gradient(90deg, var(--cyan), var(--green) 34%, var(--pink) 68%, var(--orange));
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-desc{
      max-width:62ch;
      margin-top:18px;
      font-size:16px;
      color:var(--muted);
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:44px;
      padding:0 16px;
      border-radius:999px;
      font-size:14px;
      font-weight:700;
      letter-spacing:0;
      transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
      will-change:transform;
    }
    .btn i{width:16px;height:16px}
    .btn:hover{transform:translateY(-1px)}
    .btn-primary{
      color:#071018;
      background: linear-gradient(135deg, var(--cyan), var(--green));
      box-shadow: 0 14px 28px rgba(72,224,208,.15);
    }
    .btn-primary:hover{box-shadow: 0 18px 34px rgba(72,224,208,.22)}
    .btn-secondary{
      color:var(--text);
      background: rgba(255,255,255,.04);
      box-shadow: inset 0 0 0 1px var(--line);
    }
    .btn-secondary:hover{background: rgba(255,255,255,.07)}
    .hero-points{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:20px;
    }
    .stat-pill,
    .tag-pill,
    .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      border-radius:999px;
      font-size:12px;
      font-weight:700;
      letter-spacing:0;
      white-space:nowrap;
    }
    .stat-pill{
      padding:8px 12px;
      color:var(--muted);
      background: rgba(255,255,255,.04);
      box-shadow: inset 0 0 0 1px var(--line);
    }
    .stat-pill strong{color:var(--text)}
    .hero-rail{
      background:
        linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01)),
        rgba(7,12,17,.55);
      border-left:1px solid var(--line);
    }
    .rail-card{
      border:1px solid var(--line);
      background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.02));
      border-radius: var(--radius);
      padding:18px;
      box-shadow: var(--shadow-soft);
    }
    .rail-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:16px;
    }
    .rail-title{
      font-size:15px;
      font-weight:800;
    }
    .rail-note{
      font-size:12px;
      color:var(--muted);
    }
    .leaderboard{
      display:grid;
      gap:12px;
    }
    .leader-row{
      display:grid;
      grid-template-columns: 1fr auto;
      gap:12px;
      align-items:center;
      padding:13px 14px;
      border-radius:16px;
      background: rgba(255,255,255,.035);
      box-shadow: inset 0 0 0 1px rgba(255,255,255,.05);
    }
    .leader-main{
      min-width:0;
    }
    .leader-name{
      display:flex;
      align-items:center;
      gap:10px;
      font-size:14px;
      font-weight:800;
    }
    .leader-sub{
      margin-top:4px;
      font-size:12px;
      color:var(--muted);
    }
    .progress{
      width:100%;
      height:8px;
      margin-top:10px;
      border-radius:999px;
      background: rgba(255,255,255,.06);
      overflow:hidden;
    }
    .progress > span{
      display:block;
      height:100%;
      border-radius:inherit;
      background: linear-gradient(90deg, var(--cyan), var(--green), var(--pink));
    }
    .hero-metrics{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:10px;
      margin-top:14px;
    }
    .metric{
      padding:12px;
      border-radius:14px;
      background: rgba(255,255,255,.035);
      box-shadow: inset 0 0 0 1px rgba(255,255,255,.05);
    }
    .metric .num{
      display:block;
      font-size:18px;
      font-weight:800;
      color:var(--text);
    }
    .metric .lbl{
      display:block;
      margin-top:4px;
      font-size:12px;
      color:var(--muted);
    }
    .intro-strip{
      margin-top:22px;
      padding:18px 0 8px;
    }
    .intro-panel{
      border:1px solid var(--line);
      background: rgba(17,22,29,.8);
      border-radius: var(--radius);
      padding:18px;
      box-shadow: var(--shadow-soft);
    }
    .intro-top{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:12px;
      justify-content:space-between;
    }
    .intro-left{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
    }
    .mini-label{
      font-size:13px;
      font-weight:800;
      color:var(--text);
    }
    .filter-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:14px;
    }
    .tag-pill{
      padding:9px 13px;
      color:var(--muted);
      background: rgba(255,255,255,.04);
      box-shadow: inset 0 0 0 1px var(--line);
    }
    .tag-pill:hover{
      color:var(--text);
      background: rgba(255,255,255,.07);
    }
    .tag-pill.is-active{
      color:#081018;
      background: linear-gradient(135deg, rgba(72,224,208,.95), rgba(158,242,93,.9));
      box-shadow:none;
    }
    .sort-box{
      display:flex;
      align-items:center;
      gap:10px;
      color:var(--muted);
    }
    .sort-box select{
      min-width:170px;
      height:42px;
      margin:0;
      border-radius:999px;
      border:1px solid var(--line);
      background: rgba(255,255,255,.04);
      color:var(--text);
      padding-left:14px;
      padding-right:40px;
      box-shadow:none;
    }
    .section{
      padding:54px 0 0;
    }
    .section-head{
      display:flex;
      flex-wrap:wrap;
      align-items:flex-end;
      justify-content:space-between;
      gap:16px;
      margin-bottom:18px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      font-size:12px;
      font-weight:800;
      color:var(--cyan);
      text-transform:none;
      letter-spacing:0;
    }
    .section-title{
      margin-top:8px;
      font-size:clamp(24px, 2.3vw, 34px);
      font-weight:800;
    }
    .section-desc{
      max-width:70ch;
      color:var(--muted);
      font-size:15px;
      margin-top:8px;
    }
    .section-tools{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
    }
    .ghost-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--muted);
      font-size:13px;
      font-weight:700;
      padding:8px 12px;
      border-radius:999px;
      background: rgba(255,255,255,.03);
      box-shadow: inset 0 0 0 1px var(--line);
    }
    .ghost-link:hover{
      color:var(--text);
      background: rgba(255,255,255,.06);
    }
    .ghost-link i{width:15px;height:15px}
    .panel{
      border:1px solid var(--line);
      background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.02));
      border-radius: var(--radius);
      box-shadow: var(--shadow-soft);
      overflow:hidden;
    }
    .compare-panel{
      padding:18px;
    }
    .compare-table-wrap{
      overflow-x:auto;
    }
    .compare-table{
      width:100%;
      min-width: 760px;
      border-collapse:separate;
      border-spacing:0 10px;
    }
    .compare-table th{
      color:var(--muted);
      font-size:12px;
      font-weight:700;
      text-align:left;
      padding:0 14px 8px;
      white-space:nowrap;
    }
    .compare-table td{
      padding:15px 14px;
      background: rgba(255,255,255,.035);
      border-top:1px solid rgba(255,255,255,.04);
      border-bottom:1px solid rgba(255,255,255,.04);
      font-size:14px;
      vertical-align:top;
    }
    .compare-table tr td:first-child{
      border-left:1px solid rgba(255,255,255,.04);
      border-top-left-radius:16px;
      border-bottom-left-radius:16px;
      font-weight:800;
      color:var(--text);
      width:160px;
    }
    .compare-table tr td:last-child{
      border-right:1px solid rgba(255,255,255,.04);
      border-top-right-radius:16px;
      border-bottom-right-radius:16px;
    }
    .badge{
      padding:6px 10px;
      background: rgba(255,255,255,.05);
      box-shadow: inset 0 0 0 1px var(--line);
      color:var(--muted);
    }
    .badge-cyan{color:#09131b; background: linear-gradient(135deg, rgba(72,224,208,.96), rgba(103,227,196,.92)); box-shadow:none;}
    .badge-green{color:#08120a; background: linear-gradient(135deg, rgba(158,242,93,.96), rgba(194,255,140,.92)); box-shadow:none;}
    .badge-pink{color:#190812; background: linear-gradient(135deg, rgba(255,107,181,.96), rgba(255,173,205,.92)); box-shadow:none;}
    .badge-orange{color:#1b1007; background: linear-gradient(135deg, rgba(255,180,90,.96), rgba(255,214,152,.92)); box-shadow:none;}
    .badge + .badge{margin-left:8px}
    .level-grid{
      display:grid;
      grid-template-columns: repeat(4, minmax(0,1fr));
      gap:18px;
    }
    .level-card{
      position:relative;
      padding:18px;
      min-height:220px;
      border:1px solid var(--line);
      border-radius: var(--radius);
      background:
        linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
      box-shadow: var(--shadow-soft);
      overflow:hidden;
      transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    .level-card:hover{
      transform:translateY(-3px);
      border-color: rgba(72,224,208,.26);
      box-shadow: 0 16px 40px rgba(0,0,0,.3);
    }
    .level-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
    }
    .level-icon{
      width:44px;
      height:44px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#081018;
      background: linear-gradient(135deg, var(--cyan), var(--green));
      box-shadow: 0 10px 18px rgba(72,224,208,.14);
      flex:0 0 auto;
    }
    .level-icon.pink{background: linear-gradient(135deg, var(--pink), #ff9ec8); color:#220714;}
    .level-icon.orange{background: linear-gradient(135deg, var(--orange), #ffe0b8); color:#1e1206;}
    .level-icon.blue{background: linear-gradient(135deg, var(--blue), #9cc8ff); color:#09121e;}
    .level-body{margin-top:16px}
    .level-body h3{
      font-size:19px;
      font-weight:800;
    }
    .level-body p{
      margin:10px 0 0;
      color:var(--muted);
      font-size:14px;
      min-height:48px;
    }
    .level-list{
      margin:14px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .level-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      color:var(--text);
      font-size:13px;
    }
    .level-list i{
      color:var(--cyan);
      width:16px;
      height:16px;
      margin-top:2px;
      flex:0 0 auto;
    }
    .preview-grid-wrap{
      display:grid;
      grid-template-columns: minmax(0,1.7fr) minmax(280px,.9fr);
      gap:18px;
      align-items:start;
    }
    .preview-grid{
      display:grid;
      grid-template-columns: repeat(2, minmax(0,1fr));
      gap:16px;
    }
    .preview-item{
      border:1px solid var(--line);
      background: rgba(255,255,255,.03);
      border-radius: var(--radius);
      overflow:hidden;
      transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
      box-shadow: var(--shadow-soft);
    }
    .preview-item:hover{
      transform: translateY(-2px);
      border-color: rgba(255,107,181,.24);
    }
    .preview-media{
      position:relative;
      aspect-ratio: 16 / 9;
      background:
        linear-gradient(135deg, rgba(72,224,208,.75), rgba(255,107,181,.5) 52%, rgba(255,180,90,.75));
      overflow:hidden;
    }
    .preview-media::after{
      content:"";
      position:absolute;
      inset:12px;
      border:1px solid rgba(255,255,255,.42);
      border-radius:14px;
      opacity:.65;
    }
    .preview-media::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, transparent 0 46%, rgba(8,12,17,.5) 100%),
        linear-gradient(90deg, rgba(255,255,255,.15) 1px, transparent 1px) 0 0 / 18px 100%;
      opacity:.7;
    }
    .preview-meta{
      position:absolute;
      left:14px;
      right:14px;
      bottom:12px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      color:#fff;
      z-index:1;
      font-size:12px;
      font-weight:700;
    }
    .preview-body{
      padding:16px;
    }
    .preview-title{
      font-size:16px;
      font-weight:800;
    }
    .preview-desc{
      margin-top:8px;
      font-size:13px;
      color:var(--muted);
    }
    .meta-line{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:12px;
    }
    .side-stack{
      display:grid;
      gap:16px;
    }
    .side-card{
      padding:18px;
      border:1px solid var(--line);
      background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.02));
      border-radius: var(--radius);
      box-shadow: var(--shadow-soft);
    }
    .side-card h3{
      font-size:18px;
      font-weight:800;
    }
    .side-card p{
      margin:10px 0 0;
      font-size:14px;
      color:var(--muted);
    }
    .side-list{
      margin:14px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .side-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      font-size:13px;
      color:var(--text);
    }
    .side-list i{
      width:16px;
      height:16px;
      margin-top:2px;
      color:var(--green);
    }
    .chip-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:14px;
    }
    .chip{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:34px;
      padding:0 12px;
      border-radius:999px;
      font-size:12px;
      font-weight:700;
      background: rgba(255,255,255,.04);
      box-shadow: inset 0 0 0 1px var(--line);
      color:var(--muted);
    }
    .chip strong{
      color:var(--text);
      margin-left:6px;
    }
    details.faq-item{
      border:1px solid var(--line);
      background: rgba(255,255,255,.03);
      border-radius:16px;
      box-shadow: var(--shadow-soft);
      overflow:hidden;
    }
    details.faq-item + details.faq-item{
      margin-top:12px;
    }
    summary.faq-q{
      list-style:none;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:18px 20px;
      cursor:pointer;
      font-size:15px;
      font-weight:800;
      color:var(--text);
    }
    summary.faq-q::-webkit-details-marker{display:none}
    .faq-q .arrow{
      width:18px;
      height:18px;
      color:var(--muted);
      transition: transform var(--transition);
      flex:0 0 auto;
    }
    details[open] .faq-q .arrow{
      transform:rotate(180deg);
    }
    .faq-a{
      padding:0 20px 18px;
      color:var(--muted);
      font-size:14px;
    }
    .cta-panel{
      margin-top:8px;
      padding:24px;
      border:1px solid rgba(72,224,208,.18);
      background:
        linear-gradient(135deg, rgba(72,224,208,.13), rgba(255,107,181,.08) 42%, rgba(255,180,90,.08)),
        rgba(16,22,29,.92);
      border-radius: calc(var(--radius) + 2px);
      box-shadow: var(--shadow);
    }
    .cta-grid{
      display:grid;
      grid-template-columns: minmax(0,1.4fr) minmax(280px,.9fr);
      gap:18px;
      align-items:center;
    }
    .cta-copy h2{
      font-size:clamp(26px, 2.8vw, 38px);
      font-weight:850;
    }
    .cta-copy p{
      margin:12px 0 0;
      color:var(--muted);
      max-width:58ch;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:18px;
    }
    .cta-meta{
      display:grid;
      gap:10px;
    }
    .cta-note{
      padding:14px 16px;
      border-radius:16px;
      background: rgba(255,255,255,.04);
      box-shadow: inset 0 0 0 1px var(--line);
      color:var(--text);
      font-size:13px;
    }
    .cta-note small{
      display:block;
      margin-top:4px;
      color:var(--muted);
      font-size:12px;
    }
    footer{
      margin-top:56px;
      border-top:1px solid var(--line);
      background: rgba(8,11,16,.92);
    }
    .footer-inner{
      padding:30px 0 34px;
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:24px;
    }
    .footer-brand{
      max-width:620px;
    }
    .site-title{
      display:block;
      font-size:18px;
      font-weight:800;
    }
    .footer-brand p{
      margin:10px 0 0;
      color:var(--muted);
      font-size:14px;
    }
    .footer-meta{
      margin-top:10px;
      color:var(--muted-2);
      font-size:12px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      justify-content:flex-end;
      gap:10px 16px;
      max-width:360px;
    }
    .footer-links a{
      color:var(--muted);
      font-size:13px;
      font-weight:700;
    }
    .footer-links a:hover{color:var(--text)}
    .footer-links a[href^="#"]{opacity:.9}
    .breadcrumbs{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      align-items:center;
      margin-bottom:12px;
      font-size:12px;
      color:var(--muted);
    }
    .breadcrumbs a{
      color:var(--muted);
    }
    .breadcrumbs a:hover{color:var(--text)}
    .breadcrumbs .sep{
      color:rgba(255,255,255,.25);
    }
    .mobile-only{display:none}
    .screen-rule{
      height:1px;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,.12), transparent);
      margin:0;
    }
    .tight-note{
      font-size:12px;
      color:var(--muted-2);
      margin-top:10px;
    }
    .anchor-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:12px;
    }
    .jump-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      font-size:12px;
      font-weight:700;
      color:var(--muted);
      padding:8px 11px;
      border-radius:999px;
      background: rgba(255,255,255,.03);
      box-shadow: inset 0 0 0 1px var(--line);
    }
    .jump-link:hover{color:var(--text); background: rgba(255,255,255,.06)}
    .jump-link i{width:14px;height:14px}
    .note-belt{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:14px;
    }
    .note-belt .badge{
      font-weight:800;
    }
    .subtle-line{
      margin-top:18px;
      padding-top:18px;
      border-top:1px solid var(--line);
    }
    .stack-gap{gap:18px}
    .visually-hidden{
      position:absolute!important;
      height:1px;
      width:1px;
      overflow:hidden;
      clip:rect(1px,1px,1px,1px);
      white-space:nowrap;
    }
    @media (max-width: 1024px){
      .level-grid{grid-template-columns: repeat(2, minmax(0,1fr))}
      .preview-grid-wrap,
      .cta-grid{grid-template-columns:1fr}
      .hero-rail{
        border-left:0;
        border-top:1px solid var(--line);
      }
      .hero-title{max-width:12ch}
    }
    @media (max-width: 768px){
      .container-wrap{width:min(var(--container), calc(100% - 24px))}
      .topbar-inner{
        min-height:68px;
      }
      .site-nav{
        position:absolute;
        left:12px;
        right:12px;
        top:calc(100% + 10px);
        display:grid;
        gap:6px;
        padding:12px;
        border:1px solid var(--line);
        border-radius:18px;
        background: rgba(10,14,19,.96);
        box-shadow: var(--shadow);
        opacity:0;
        transform: translateY(-8px);
        pointer-events:none;
        transition: opacity var(--transition), transform var(--transition);
      }
      .site-nav.is-open{
        opacity:1;
        transform: translateY(0);
        pointer-events:auto;
      }
      .nav-link{
        padding:12px 14px;
        border-radius:14px;
      }
      .nav-link.is-active::after{display:none}
      .nav-toggle{display:inline-flex}
      .hero-copy,
      .hero-rail{
        padding:22px;
      }
      .hero-title{font-size:clamp(32px, 9vw, 42px); max-width:100%}
      .hero-desc{font-size:15px}
      .hero-metrics{grid-template-columns:1fr}
      .intro-top{align-items:flex-start}
      .sort-box{width:100%; justify-content:space-between}
      .sort-box select{flex:1}
      .compare-panel{padding:14px}
      .level-grid{grid-template-columns:1fr}
      .preview-grid{grid-template-columns:1fr}
      .section{padding-top:42px}
      .footer-inner{flex-direction:column}
      .footer-links{justify-content:flex-start}
      .mobile-only{display:inline-flex}
    }
    @media (max-width: 520px){
      .brand-sub{font-size:11px}
      .hero-actions .btn,
      .cta-actions .btn{
        width:100%;
      }
      .stat-pill,
      .tag-pill,
      .badge,
      .jump-link{
        width:100%;
        justify-content:center;
      }
      .compare-table{
        min-width: 640px;
      }
      summary.faq-q,
      .faq-a{
        padding-left:16px;
        padding-right:16px;
      }
    }
    .focusable:focus,
    a:focus,
    button:focus,
    select:focus,
    summary:focus{
      outline:2px solid rgba(72,224,208,.85);
      outline-offset:2px;
    }