/* roulang page: index */
:root{
      --bg:#0d1217;
      --bg-2:#111820;
      --panel:#151d25;
      --panel-2:#18222d;
      --line:#273342;
      --line-2:#334356;
      --text:#e7edf4;
      --muted:#9aa8b7;
      --soft:#6f7f91;
      --teal:#2dd4bf;
      --teal-2:#11b7a5;
      --amber:#f3b65f;
      --amber-2:#e79d31;
      --red:#ff6a5c;
      --green:#49d17d;
      --shadow:0 10px 24px rgba(0,0,0,.28);
      --shadow-2:0 18px 40px rgba(0,0,0,.34);
      --radius:18px;
      --radius-sm:14px;
      --radius-xs:12px;
      --container:1280px;
      --gap:24px;
      --gap-sm:16px;
      --space:clamp(18px,2vw,28px);
      --head-h:78px;
      --transition:180ms ease;
      --transition-slow:280ms ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:
        radial-gradient(1200px 700px at 12% 0%, rgba(45,212,191,.12), transparent 58%),
        radial-gradient(900px 500px at 88% 10%, rgba(243,182,95,.10), transparent 52%),
        linear-gradient(180deg, #0c1116 0%, #0d1217 32%, #0f151b 100%);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      line-height:1.65;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{border:0;background:none;padding:0;cursor:pointer}
    ::selection{background:rgba(45,212,191,.22);color:#fff}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }
    .skip{
      position:absolute;left:-999px;top:0;
    }
    .skip:focus{
      left:16px;top:16px;z-index:1000;
      background:var(--panel);color:var(--text);
      padding:10px 14px;border-radius:10px;border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .topbar{
      border-bottom:1px solid rgba(255,255,255,.06);
      background:rgba(13,18,23,.88);
      backdrop-filter:saturate(120%);
    }
    .topbar-inner{
      display:flex;align-items:center;justify-content:space-between;
      gap:14px;
      padding:10px 0;
      color:var(--muted);
      font-size:13px;
    }
    .topbar-left,.topbar-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .dot{
      width:6px;height:6px;border-radius:50%;
      background:var(--teal);
      box-shadow:0 0 0 4px rgba(45,212,191,.12);
      display:inline-block;
    }
    .badge{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;
      border:1px solid rgba(45,212,191,.22);
      background:rgba(17,23,29,.72);
      color:#d7f9f4;
      font-size:13px;
      line-height:1;
      white-space:nowrap;
    }
    header.site-header{
      position:sticky;top:0;z-index:40;
      background:rgba(13,18,23,.92);
      border-bottom:1px solid rgba(255,255,255,.07);
      backdrop-filter:saturate(120%);
    }
    .header-inner{
      min-height:var(--head-h);
      display:flex;align-items:center;justify-content:space-between;
      gap:20px;
    }
    .brand{
      display:flex;align-items:center;gap:14px;min-width:0;
    }
    .brand-mark{
      width:46px;height:46px;border-radius:14px;
      background:
        linear-gradient(145deg, rgba(45,212,191,.96), rgba(12,18,22,.95) 72%);
      box-shadow:0 10px 24px rgba(17,183,165,.18), inset 0 0 0 1px rgba(255,255,255,.08);
      position:relative;flex:0 0 auto;
    }
    .brand-mark::before{
      content:"";
      position:absolute;inset:10px;
      border-radius:10px;
      border:1.5px solid rgba(255,255,255,.75);
      transform:rotate(14deg);
    }
    .brand-text{
      min-width:0;
    }
    .brand-text strong{
      display:block;
      font-size:18px;
      letter-spacing:.2px;
      line-height:1.2;
      color:#f5fbff;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-text span{
      display:block;
      font-size:12px;
      color:var(--muted);
      margin-top:2px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .menu-toggle{
      display:none;
      align-items:center;justify-content:center;
      width:44px;height:44px;
      border-radius:12px;
      border:1px solid var(--line);
      background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
      color:var(--text);
      transition:transform var(--transition), border-color var(--transition), background var(--transition);
    }
    .menu-toggle:hover{transform:translateY(-1px);border-color:rgba(45,212,191,.35)}
    .menu-toggle:focus-visible{
      outline:2px solid rgba(45,212,191,.55);
      outline-offset:2px;
    }
    .menu-icon{
      width:18px;height:12px;position:relative;display:block;
    }
    .menu-icon::before,.menu-icon::after,.menu-icon span{
      content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;background:currentColor;
    }
    .menu-icon::before{top:0}
    .menu-icon span{top:5px}
    .menu-icon::after{bottom:0}
    nav.site-nav{
      display:flex;align-items:center;gap:10px;
    }
    .nav-list{
      display:flex;align-items:center;gap:8px;
      list-style:none;padding:0;margin:0;
    }
    .nav-list a{
      display:inline-flex;align-items:center;gap:8px;
      padding:11px 16px;border-radius:999px;
      color:#dbe5ef;
      border:1px solid transparent;
      transition:transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
      font-size:14px;
      white-space:nowrap;
    }
    .nav-list a:hover,
    .nav-list a:focus-visible{
      background:rgba(255,255,255,.04);
      border-color:rgba(45,212,191,.22);
      color:#ffffff;
      transform:translateY(-1px);
      outline:none;
    }
    .nav-list a.active{
      background:linear-gradient(135deg, rgba(45,212,191,.16), rgba(17,183,165,.08));
      border-color:rgba(45,212,191,.28);
      color:#fff;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.04);
    }

    .hero{
      position:relative;
      padding:28px 0 20px;
    }
    .hero-shell{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      border-radius:28px;
      background:
        linear-gradient(180deg, rgba(13,18,23,.78), rgba(13,18,23,.94)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow-2);
    }
    .hero-shell::before{
      content:"";
      position:absolute;inset:0;
      background:
        linear-gradient(115deg, rgba(7,10,12,.86) 0%, rgba(7,10,12,.60) 45%, rgba(7,10,12,.25) 100%);
      pointer-events:none;
    }
    .hero-shell::after{
      content:"";
      position:absolute;inset:-1px;
      background:
        radial-gradient(800px 300px at 12% 10%, rgba(45,212,191,.18), transparent 60%),
        radial-gradient(600px 240px at 86% 16%, rgba(243,182,95,.14), transparent 58%);
      pointer-events:none;
      mix-blend-mode:screen;
    }
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:22px;
      padding:clamp(26px,4vw,42px);
      align-items:stretch;
      min-height:520px;
    }
    .hero-copy{
      display:flex;flex-direction:column;justify-content:center;
      gap:18px;
      z-index:1;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:10px;
      color:#dffaf6;
      font-size:13px;font-weight:600;
      letter-spacing:.3px;
      text-transform:none;
    }
    .eyebrow .bar{
      width:24px;height:2px;border-radius:999px;background:linear-gradient(90deg,var(--teal),transparent);
    }
    .hero h1{
      margin:0;
      font-size:clamp(34px,4.7vw,60px);
      line-height:1.08;
      letter-spacing:-.8px;
      max-width:12em;
    }
    .hero p.lead{
      margin:0;
      max-width:38rem;
      font-size:16px;
      color:#c0ccd8;
    }
    .hero-actions{
      display:flex;gap:12px;flex-wrap:wrap;align-items:center;
      margin-top:2px;
    }
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:10px;
      min-height:46px;padding:0 18px;
      border-radius:14px;
      border:1px solid transparent;
      font-weight:600;
      transition:transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), color var(--transition);
      position:relative;
      overflow:hidden;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:focus-visible{
      outline:2px solid rgba(45,212,191,.55);
      outline-offset:2px;
    }
    .btn-primary{
      color:#05201d;
      background:linear-gradient(135deg, var(--teal) 0%, #6ff0e2 100%);
      box-shadow:0 14px 28px rgba(17,183,165,.18);
    }
    .btn-primary:hover{
      background:linear-gradient(135deg, #41dfcd 0%, #86f5ea 100%);
      box-shadow:0 16px 30px rgba(17,183,165,.24);
    }
    .btn-secondary{
      color:#eaf3fb;
      background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
      border-color:rgba(255,255,255,.12);
    }
    .btn-secondary:hover{
      background:rgba(255,255,255,.08);
      border-color:rgba(243,182,95,.28);
    }
    .hero-points{
      display:flex;flex-wrap:wrap;gap:10px;
      margin-top:6px;
    }
    .pill{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:#dfe8f2;
      font-size:13px;
      white-space:nowrap;
    }
    .pill .mini{
      width:8px;height:8px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 4px rgba(243,182,95,.12);
    }

    .hero-aside{
      position:relative;
      z-index:1;
      display:flex;
      flex-direction:column;
      gap:16px;
      justify-content:center;
      align-self:stretch;
    }
    .visual-card{
      position:relative;
      border-radius:26px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.09);
      background:
        linear-gradient(180deg, rgba(10,14,18,.10), rgba(10,14,18,.78)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      min-height:320px;
      box-shadow:var(--shadow);
    }
    .visual-card::before{
      content:"";
      position:absolute;inset:0;
      background:linear-gradient(180deg, rgba(0,0,0,.16) 0%, rgba(0,0,0,.58) 100%);
    }
    .visual-overlay{
      position:absolute;inset:0;
      padding:20px;
      display:flex;flex-direction:column;justify-content:space-between;
    }
    .visual-top{
      display:flex;justify-content:space-between;gap:12px;align-items:flex-start;
    }
    .visual-top .tag{
      padding:8px 10px;
      border-radius:12px;
      background:rgba(17,23,29,.72);
      border:1px solid rgba(255,255,255,.10);
      font-size:12px;color:#dce6ef;
    }
    .heat{
      display:inline-flex;align-items:center;gap:8px;
      font-size:12px;color:#ffe7bf;
      padding:8px 10px;border-radius:999px;
      background:rgba(243,182,95,.12);
      border:1px solid rgba(243,182,95,.18);
    }
    .heat b{
      color:#fff;
      font-size:15px;
      line-height:1;
    }
    .visual-bottom{
      display:grid;gap:12px;
    }
    .visual-title{
      margin:0;
      font-size:22px;
      line-height:1.25;
      max-width:12em;
    }
    .visual-note{
      margin:0;
      color:#d1dbe5;
      font-size:14px;
      max-width:28rem;
    }
    .floating-metrics{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:10px;
    }
    .float-box{
      padding:12px 12px 13px;
      border-radius:16px;
      background:rgba(10,14,18,.76);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow);
    }
    .float-box span{
      display:block;font-size:12px;color:var(--muted);margin-bottom:5px;
    }
    .float-box strong{
      display:block;font-size:18px;letter-spacing:.2px;
    }
    .float-box em{
      display:block;font-style:normal;font-size:12px;color:#9cb0c3;margin-top:3px;
    }

    main{padding-bottom:40px}
    section.block{
      padding:22px 0;
    }
    .block-head{
      display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
      margin-bottom:16px;
    }
    .block-head h2{
      margin:0;
      font-size:26px;
      line-height:1.18;
      letter-spacing:-.4px;
    }
    .block-head p{
      margin:0;
      color:var(--muted);
      max-width:52rem;
      font-size:14px;
    }
    .chip-row{
      display:flex;flex-wrap:wrap;gap:10px;
      padding:4px 0 2px;
    }
    .chip{
      display:inline-flex;align-items:center;gap:8px;
      padding:10px 14px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.09);
      background:linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02));
      color:#e3ebf2;
      font-size:13px;
      transition:transform var(--transition), border-color var(--transition), background var(--transition);
    }
    .chip:hover{transform:translateY(-1px);border-color:rgba(45,212,191,.26);background:rgba(255,255,255,.07)}
    .chip .k{
      width:8px;height:8px;border-radius:50%;background:var(--teal);
      box-shadow:0 0 0 4px rgba(45,212,191,.12);
    }

    .spotlight-grid{
      display:grid;
      grid-template-columns:1.3fr .7fr;
      gap:var(--gap);
      align-items:stretch;
    }
    .focus-card{
      position:relative;
      overflow:hidden;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.08);
      background:var(--panel);
      box-shadow:var(--shadow);
      min-height:100%;
    }
    .focus-card.big{
      background:
        linear-gradient(180deg, rgba(10,14,18,.15), rgba(10,14,18,.86)),
        url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
      min-height:420px;
    }
    .focus-card.big::before{
      content:"";
      position:absolute;inset:0;
      background:linear-gradient(135deg, rgba(5,8,10,.18), rgba(5,8,10,.74) 62%, rgba(5,8,10,.90));
    }
    .focus-content{
      position:relative;
      z-index:1;
      display:flex;flex-direction:column;justify-content:flex-end;
      min-height:420px;
      padding:24px;
      gap:14px;
    }
    .meta-row{
      display:flex;flex-wrap:wrap;gap:8px;
    }
    .meta{
      display:inline-flex;align-items:center;gap:6px;
      font-size:12px;
      color:#dbe4ec;
      padding:7px 10px;
      border-radius:999px;
      background:rgba(17,23,29,.66);
      border:1px solid rgba(255,255,255,.10);
    }
    .meta.red{color:#ffd7d2;border-color:rgba(255,106,92,.18);background:rgba(255,106,92,.10)}
    .meta.amber{color:#fff0ce;border-color:rgba(243,182,95,.18);background:rgba(243,182,95,.10)}
    .focus-content h3{
      margin:0;
      font-size:28px;
      line-height:1.18;
      max-width:14em;
    }
    .focus-content p{
      margin:0;
      color:#d4dde6;
      max-width:40rem;
      font-size:15px;
    }
    .focus-actions{display:flex;gap:10px;flex-wrap:wrap}

    .stack{
      display:grid;
      gap:var(--gap);
    }
    .mini-card{
      border-radius:24px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      background:var(--panel);
      box-shadow:var(--shadow);
      min-height:198px;
      display:grid;
      grid-template-columns:108px 1fr;
    }
    .mini-card .cover{
      background-size:cover;
      background-position:center;
      min-height:100%;
      position:relative;
    }
    .mini-card .cover::after{
      content:"";
      position:absolute;inset:0;
      background:linear-gradient(180deg, rgba(0,0,0,.06), rgba(0,0,0,.36));
    }
    .mini-card .copy{
      padding:18px 18px 18px 16px;
      display:flex;flex-direction:column;justify-content:space-between;gap:10px;
    }
    .mini-card h3{
      margin:0;
      font-size:20px;
      line-height:1.22;
      letter-spacing:-.2px;
    }
    .mini-card p{
      margin:0;color:var(--muted);font-size:14px;
    }
    .mini-card .foot{
      display:flex;align-items:center;justify-content:space-between;gap:12px;
      font-size:12px;color:#aab8c6;
    }
    .mini-card .foot .count{
      color:#fff;
      font-weight:700;
      letter-spacing:.3px;
    }

    .stats-wrap{
      display:grid;
      grid-template-columns:repeat(12,1fr);
      gap:var(--gap);
      align-items:stretch;
    }
    .stat-card{
      grid-column:span 3;
      padding:22px;
      border-radius:24px;
      background:linear-gradient(180deg, rgba(24,34,45,.96), rgba(19,26,34,.96));
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
      position:relative;
      overflow:hidden;
    }
    .stat-card::before{
      content:"";
      position:absolute;inset:auto -20% -40% auto;
      width:180px;height:180px;border-radius:50%;
      background:radial-gradient(circle, rgba(45,212,191,.18) 0%, transparent 70%);
      pointer-events:none;
    }
    .stat-card .num{
      font-size:34px;
      font-weight:800;
      line-height:1;
      letter-spacing:-.6px;
      margin-bottom:8px;
      color:#f6fbff;
    }
    .stat-card .label{
      font-size:14px;
      color:#dfe7ef;
      margin-bottom:8px;
    }
    .stat-card .desc{
      font-size:13px;
      color:var(--muted);
      margin:0;
    }
    .timeline{
      grid-column:span 12;
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
      padding:20px;
      border-radius:26px;
      background:linear-gradient(180deg, rgba(15,21,27,.92), rgba(21,29,37,.92));
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
    }
    .step{
      position:relative;
      padding:18px 18px 18px 20px;
      border-radius:18px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.06);
      min-height:132px;
    }
    .step .index{
      display:inline-flex;align-items:center;justify-content:center;
      width:30px;height:30px;border-radius:10px;
      background:rgba(45,212,191,.12);
      color:#dffcf7;
      font-weight:700;
      margin-bottom:10px;
    }
    .step h3{
      margin:0 0 8px;
      font-size:18px;
      line-height:1.22;
    }
    .step p{
      margin:0;color:var(--muted);font-size:13px;
    }

    .entry-grid{
      display:grid;
      grid-template-columns:repeat(12,1fr);
      gap:var(--gap);
    }
    .entry-main{
      grid-column:span 7;
      border-radius:26px;
      overflow:hidden;
      background:
        linear-gradient(180deg, rgba(8,12,15,.18), rgba(8,12,15,.84)),
        url('/assets/images/coverpic/cover-2.webp') center/cover no-repeat;
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
      min-height:360px;
      position:relative;
    }
    .entry-main::before{
      content:"";
      position:absolute;inset:0;
      background:linear-gradient(135deg, rgba(5,8,10,.10), rgba(5,8,10,.76) 62%, rgba(5,8,10,.92));
    }
    .entry-main .copy{
      position:relative;z-index:1;
      padding:24px;
      display:flex;flex-direction:column;justify-content:flex-end;
      height:100%;
      gap:14px;
    }
    .entry-main h3{
      margin:0;
      font-size:26px;
      line-height:1.2;
    }
    .entry-main p{
      margin:0;
      color:#d3dee8;
      max-width:34rem;
      font-size:15px;
    }
    .entry-side{
      grid-column:span 5;
      display:grid;
      gap:var(--gap);
    }
    .entry-card{
      border-radius:24px;
      overflow:hidden;
      background:var(--panel);
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
      display:grid;
      grid-template-columns:120px 1fr;
      min-height:168px;
    }
    .entry-card .thumb{
      background-size:cover;background-position:center;
      position:relative;
    }
    .entry-card .thumb::after{
      content:"";
      position:absolute;inset:0;
      background:linear-gradient(180deg, rgba(0,0,0,.08), rgba(0,0,0,.34));
    }
    .entry-card .text{
      padding:18px 18px 18px 16px;
      display:flex;flex-direction:column;justify-content:space-between;gap:12px;
    }
    .entry-card h4{
      margin:0;
      font-size:19px;
      line-height:1.2;
    }
    .entry-card p{
      margin:0;color:var(--muted);font-size:13px;
    }
    .entry-card .linkline{
      display:flex;align-items:center;justify-content:space-between;gap:10px;
      color:#dceaf1;font-size:12px;
    }
    .entry-card .linkline .arrow{
      color:var(--teal);
      font-weight:700;
    }

    .grid-3{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:var(--gap);
    }
    .topic-card{
      border-radius:24px;
      overflow:hidden;
      background:var(--panel);
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
      transition:transform var(--transition-slow), border-color var(--transition-slow), box-shadow var(--transition-slow);
      min-height:100%;
    }
    .topic-card:hover{
      transform:translateY(-3px);
      border-color:rgba(45,212,191,.22);
      box-shadow:0 18px 34px rgba(0,0,0,.34);
    }
    .topic-card img{
      width:100%;
      aspect-ratio:16/9;
      object-fit:cover;
      border-bottom:1px solid rgba(255,255,255,.06);
      filter:saturate(1.02) contrast(1.02);
    }
    .topic-card .body{
      padding:18px;
      display:grid;
      gap:10px;
    }
    .topic-card h3{
      margin:0;
      font-size:19px;
      line-height:1.24;
    }
    .topic-card p{
      margin:0;color:var(--muted);font-size:14px;
    }
    .tag-row{
      display:flex;flex-wrap:wrap;gap:8px;
    }
    .tag{
      display:inline-flex;align-items:center;
      padding:6px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      color:#d9e3ec;
      border:1px solid rgba(255,255,255,.06);
      font-size:12px;
    }
    .tag.teal{background:rgba(45,212,191,.10);border-color:rgba(45,212,191,.18);color:#d9fffa}
    .tag.amber{background:rgba(243,182,95,.10);border-color:rgba(243,182,95,.18);color:#fff0ce}
    .tag.red{background:rgba(255,106,92,.10);border-color:rgba(255,106,92,.18);color:#ffd8d3}

    .faq-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:var(--gap);
    }
    details.faq{
      border-radius:20px;
      background:linear-gradient(180deg, rgba(24,34,45,.96), rgba(18,25,32,.96));
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    details.faq + details.faq{margin-top:0}
    summary{
      list-style:none;
      cursor:pointer;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      font-weight:700;
      color:#f2f7fb;
      font-size:16px;
      transition:background var(--transition), color var(--transition);
    }
    summary::-webkit-details-marker{display:none}
    summary:hover{background:rgba(255,255,255,.03)}
    summary .plus{
      width:30px;height:30px;border-radius:10px;
      display:inline-flex;align-items:center;justify-content:center;
      background:rgba(255,255,255,.05);
      color:var(--teal);
      flex:0 0 auto;
      transition:transform var(--transition);
    }
    details[open] summary .plus{transform:rotate(45deg)}
    .faq-body{
      padding:0 20px 18px;
      color:var(--muted);
      font-size:14px;
    }
    .faq-body p{margin:0}
    .cta{
      margin-top:8px;
      padding:0 0 10px;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      border:1px solid rgba(255,255,255,.08);
      background:
        linear-gradient(135deg, rgba(21,29,37,.98), rgba(13,18,23,.98));
      box-shadow:var(--shadow-2);
      padding:26px;
    }
    .cta-box::before{
      content:"";
      position:absolute;right:-70px;top:-60px;
      width:260px;height:260px;border-radius:50%;
      background:radial-gradient(circle, rgba(45,212,191,.18) 0%, transparent 70%);
      pointer-events:none;
    }
    .cta-row{
      position:relative;z-index:1;
      display:flex;align-items:center;justify-content:space-between;
      gap:20px;
    }
    .cta-copy h2{
      margin:0 0 8px;
      font-size:28px;
      line-height:1.16;
    }
    .cta-copy p{
      margin:0;
      color:var(--muted);
      max-width:52rem;
      font-size:14px;
    }

    footer.site-footer{
      margin-top:22px;
      border-top:1px solid rgba(255,255,255,.07);
      background:#0b1015;
    }
    .footer-inner{
      padding:28px 0 34px;
      display:grid;
      grid-template-columns:1.1fr .9fr .8fr;
      gap:24px;
    }
    .footer-col h3{
      margin:0 0 12px;
      font-size:16px;
      color:#f4f9fd;
    }
    .footer-col p,
    .footer-col li{
      margin:0;
      color:var(--muted);
      font-size:13px;
    }
    .footer-col ul{
      list-style:none;
      padding:0;margin:0;
      display:grid;gap:10px;
    }
    .footer-note{
      margin-top:18px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.06);
      color:#8392a4;
      font-size:12px;
      display:flex;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
    }
    .footer-links{
      display:flex;gap:12px;flex-wrap:wrap;
    }
    .footer-links a{
      color:#dce6ef;
      transition:color var(--transition), transform var(--transition);
    }
    .footer-links a:hover,
    .footer-links a:focus-visible{
      color:#fff;
      transform:translateY(-1px);
      outline:none;
    }

    .section-sep{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(255,255,255,.12), transparent);
      margin:14px 0 0;
    }

    @media (max-width: 1439px){
      .hero-grid{min-height:500px}
    }
    @media (max-width: 1199px){
      .spotlight-grid,
      .entry-grid{
        grid-template-columns:1fr;
      }
      .entry-main,
      .entry-side{
        grid-column:1/-1;
      }
      .entry-side{grid-template-columns:repeat(2,1fr)}
      .stats-wrap{gap:20px}
      .stat-card{grid-column:span 6}
      .timeline{grid-template-columns:repeat(2,1fr)}
      .grid-3{grid-template-columns:repeat(2,1fr)}
      .faq-grid{grid-template-columns:1fr}
      .footer-inner{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 991px){
      .hero-grid{
        grid-template-columns:1fr;
        min-height:auto;
      }
      .hero h1{max-width:unset}
      .hero-aside{gap:12px}
      .visual-card{min-height:300px}
      .floating-metrics{grid-template-columns:repeat(3,1fr)}
      .block-head{
        align-items:flex-start;
        flex-direction:column;
      }
      .cta-row{flex-direction:column;align-items:flex-start}
    }
    @media (max-width: 767px){
      :root{--head-h:70px}
      .topbar-inner{font-size:12px}
      .menu-toggle{display:inline-flex}
      nav.site-nav{
        position:fixed;
        left:16px;right:16px;top:126px;
        opacity:0;pointer-events:none;
        transform:translateY(-8px);
        transition:opacity var(--transition-slow), transform var(--transition-slow);
        background:rgba(13,18,23,.98);
        border:1px solid rgba(255,255,255,.10);
        border-radius:20px;
        box-shadow:var(--shadow-2);
        padding:12px;
      }
      body.nav-open nav.site-nav{
        opacity:1;pointer-events:auto;transform:translateY(0);
      }
      .nav-list{
        width:100%;
        flex-direction:column;
        align-items:stretch;
      }
      .nav-list a{
        justify-content:center;
        border-color:rgba(255,255,255,.08);
        background:rgba(255,255,255,.03);
      }
      .header-inner{
        gap:12px;
      }
      .brand-text strong{font-size:16px}
      .hero{padding-top:18px}
      .hero-shell{
        border-radius:22px;
      }
      .hero-grid{padding:20px;gap:18px}
      .hero h1{font-size:30px}
      .hero p.lead{font-size:15px}
      .floating-metrics{grid-template-columns:1fr;gap:10px}
      .spotlight-grid,.grid-3,.faq-grid,.footer-inner,.timeline,.entry-side{
        grid-template-columns:1fr;
      }
      .stat-card{grid-column:span 12}
      .timeline{padding:14px}
      .step{min-height:auto}
      .focus-content h3{font-size:24px}
      .focus-content{min-height:360px;padding:20px}
      .mini-card,.entry-card{
        grid-template-columns:1fr;
      }
      .mini-card .cover,
      .entry-card .thumb{
        min-height:180px;
      }
      .entry-card .text,.mini-card .copy,.topic-card .body{
        padding:16px;
      }
      .cta-box{padding:20px}
      .cta-copy h2{font-size:24px}
      .footer-note{flex-direction:column}
    }
    @media (max-width: 520px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .hero-grid{padding:16px}
      .hero h1{font-size:28px}
      .btn{width:100%}
      .hero-actions,.focus-actions{width:100%}
      .hero-actions .btn,.focus-actions .btn{width:100%}
      .pill,.chip,.meta,.tag,.badge{white-space:normal}
      summary{padding:16px}
      .faq-body{padding:0 16px 16px}
      .block-head h2{font-size:22px}
      .visual-top{flex-direction:column;align-items:flex-start}
    }

    .is-hidden{display:none!important}
    body.nav-open .nav-mask{
      opacity:1;pointer-events:auto;
    }
    .nav-mask{
      position:fixed;inset:0;
      background:rgba(0,0,0,.42);
      opacity:0;pointer-events:none;
      transition:opacity var(--transition-slow);
      z-index:30;
    }

/* roulang page: category1 */
:root{
      --bg:#0b0f12;
      --bg-soft:#11181d;
      --panel:#151e24;
      --panel-2:#18232a;
      --text:#edf5f4;
      --muted:#9fb0b4;
      --weak:#6f8288;
      --line:rgba(151,178,184,.18);
      --primary:#21d3b2;
      --primary-2:#3aa8ff;
      --gold:#f0b35a;
      --coral:#ff6b5d;
      --green-soft:rgba(33,211,178,.12);
      --blue-soft:rgba(58,168,255,.12);
      --gold-soft:rgba(240,179,90,.12);
      --radius-sm:10px;
      --radius:16px;
      --radius-lg:24px;
      --shadow:0 16px 42px rgba(0,0,0,.28);
      --shadow-sm:0 10px 26px rgba(0,0,0,.18);
      --container:1240px;
      --ease:all .22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 4%, rgba(33,211,178,.13), transparent 32%),
        radial-gradient(circle at 88% 12%, rgba(58,168,255,.10), transparent 30%),
        linear-gradient(180deg,#091013 0%,#0b0f12 42%,#0a0d10 100%);
      line-height:1.7;
      min-height:100vh;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select{font:inherit}
    button{cursor:pointer;border:0}
    input,select{
      color:var(--text);
      background:#0e1519;
      border:1px solid var(--line);
      border-radius:12px;
      outline:none;
      transition:var(--ease);
    }
    input:focus,select:focus,button:focus-visible,a:focus-visible{
      outline:2px solid rgba(33,211,178,.65);
      outline-offset:3px;
    }
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(9,15,18,.88);
      backdrop-filter:blur(14px);
      border-bottom:1px solid var(--line);
    }
    .header-inner{
      height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      color:#071012;
      font-weight:900;
      letter-spacing:-.04em;
      box-shadow:0 10px 28px rgba(33,211,178,.22);
      flex:0 0 auto;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
    }
    .brand-name{
      font-size:18px;
      font-weight:800;
      letter-spacing:.01em;
      white-space:nowrap;
    }
    .brand-sub{
      font-size:12px;
      color:var(--muted);
      margin-top:4px;
      white-space:nowrap;
    }
    .site-nav{margin-left:auto}
    .nav-list{
      list-style:none;
      display:flex;
      align-items:center;
      gap:8px;
      padding:0;
      margin:0;
    }
    .nav-list a{
      display:inline-flex;
      align-items:center;
      min-height:42px;
      padding:10px 15px;
      border-radius:999px;
      color:#c9d7da;
      font-size:14px;
      font-weight:700;
      transition:var(--ease);
      border:1px solid transparent;
    }
    .nav-list a:hover{
      color:#fff;
      background:rgba(255,255,255,.05);
      border-color:var(--line);
      transform:translateY(-1px);
    }
    .nav-list a.active{
      color:#081010;
      background:linear-gradient(135deg,var(--primary),#6ee7d1);
      box-shadow:0 10px 24px rgba(33,211,178,.2);
    }
    .menu-toggle{
      display:none;
      width:42px;
      height:42px;
      border-radius:12px;
      background:var(--panel);
      border:1px solid var(--line);
      color:var(--text);
    }
    .menu-toggle span{
      display:block;
      width:18px;
      height:2px;
      background:var(--text);
      margin:4px auto;
      border-radius:2px;
      transition:var(--ease);
    }
    .breadcrumb{
      padding:24px 0 0;
      color:var(--muted);
      font-size:14px;
    }
    .breadcrumb a{color:#cce1e2;transition:var(--ease)}
    .breadcrumb a:hover{color:var(--primary)}
    .breadcrumb span{color:var(--weak);margin:0 8px}
    .category-hero{
      position:relative;
      padding:34px 0 40px;
    }
    .hero-panel{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:
        linear-gradient(90deg,rgba(9,14,17,.96) 0%,rgba(9,14,17,.83) 48%,rgba(9,14,17,.42) 100%),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      box-shadow:var(--shadow);
      min-height:440px;
      display:grid;
      align-items:end;
    }
    .hero-panel:before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent 0%,rgba(8,12,14,.78) 100%);
      pointer-events:none;
    }
    .hero-content{
      position:relative;
      z-index:1;
      padding:46px;
      max-width:830px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      border:1px solid rgba(33,211,178,.36);
      background:var(--green-soft);
      color:#a8fff0;
      font-size:13px;
      font-weight:800;
      letter-spacing:.02em;
      margin-bottom:18px;
    }
    .eyebrow:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 5px rgba(33,211,178,.12);
    }
    h1{
      margin:0;
      font-size:clamp(34px,5vw,58px);
      line-height:1.08;
      letter-spacing:-.04em;
      font-weight:900;
      max-width:760px;
    }
    .hero-desc{
      margin:20px 0 0;
      color:#d3e2e4;
      font-size:17px;
      max-width:760px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:12px 18px;
      border-radius:13px;
      font-weight:800;
      transition:var(--ease);
      border:1px solid transparent;
      user-select:none;
    }
    .btn-primary{
      color:#071010;
      background:linear-gradient(135deg,var(--primary),#7ce8d5);
      box-shadow:0 14px 28px rgba(33,211,178,.20);
    }
    .btn-primary:hover{
      filter:brightness(1.09);
      transform:translateY(-2px);
      border-color:rgba(255,255,255,.28);
    }
    .btn-secondary{
      color:#eefafa;
      background:rgba(255,255,255,.06);
      border-color:var(--line);
    }
    .btn-secondary:hover{
      background:rgba(255,255,255,.10);
      border-color:rgba(33,211,178,.38);
      transform:translateY(-2px);
    }
    .filter-bar{
      margin-top:18px;
      padding:16px;
      display:grid;
      grid-template-columns:1.4fr .75fr auto;
      gap:12px;
      border-radius:18px;
      background:rgba(17,24,29,.88);
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .search-wrap{position:relative}
    .search-wrap input{
      width:100%;
      min-height:48px;
      padding:0 15px 0 42px;
    }
    .search-wrap:before{
      content:"⌕";
      position:absolute;
      left:16px;
      top:50%;
      transform:translateY(-50%);
      color:var(--primary);
      font-weight:900;
      font-size:18px;
    }
    .filter-bar select{
      width:100%;
      min-height:48px;
      padding:0 14px;
    }
    .filter-bar .btn{min-height:48px}
    main{padding-bottom:84px}
    .section{padding:42px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:22px;
    }
    .section-title{
      margin:0;
      font-size:clamp(24px,3vw,36px);
      line-height:1.18;
      letter-spacing:-.03em;
      font-weight:900;
    }
    .section-note{
      margin:8px 0 0;
      color:var(--muted);
      max-width:680px;
    }
    .tag-row{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
    }
    .tag,.badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 10px;
      border-radius:999px;
      font-size:12px;
      font-weight:800;
      border:1px solid var(--line);
      color:#d8e8e9;
      background:rgba(255,255,255,.05);
      white-space:nowrap;
    }
    .tag.hot{color:#ffe0b6;border-color:rgba(240,179,90,.34);background:var(--gold-soft)}
    .tag.score{color:#b5fff2;border-color:rgba(33,211,178,.32);background:var(--green-soft)}
    .tag.alert{color:#ffd0ca;border-color:rgba(255,107,93,.34);background:rgba(255,107,93,.10)}
    .content-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      gap:22px;
      align-items:start;
    }
    .feature-card{
      display:grid;
      grid-template-columns:1.08fr .92fr;
      overflow:hidden;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:linear-gradient(135deg,rgba(21,30,36,.96),rgba(15,22,27,.96));
      box-shadow:var(--shadow-sm);
      margin-bottom:22px;
    }
    .feature-media{
      position:relative;
      min-height:320px;
      overflow:hidden;
    }
    .feature-media img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .35s ease;
    }
    .feature-card:hover .feature-media img{transform:scale(1.04)}
    .feature-media:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,rgba(0,0,0,.02),rgba(0,0,0,.48));
    }
    .feature-copy{
      padding:30px;
      display:flex;
      flex-direction:column;
      justify-content:center;
    }
    .meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      color:var(--weak);
      font-size:13px;
      margin:14px 0 0;
    }
    .feature-copy h2,.article-card h3,.side-card h3,.process-card h3,.faq-item summary{
      margin:0;
      color:var(--text);
    }
    .feature-copy h2{
      font-size:30px;
      line-height:1.22;
      letter-spacing:-.03em;
      margin-top:14px;
    }
    .feature-copy p,.article-card p,.side-card p,.process-card p,.faq-item p{
      color:var(--muted);
      margin:12px 0 0;
    }
    .card-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:18px;
    }
    .article-card{
      overflow:hidden;
      border-radius:var(--radius);
      background:var(--panel);
      border:1px solid var(--line);
      transition:var(--ease);
      box-shadow:0 12px 28px rgba(0,0,0,.13);
    }
    .article-card:hover{
      transform:translateY(-3px);
      border-color:rgba(33,211,178,.34);
      box-shadow:var(--shadow-sm);
    }
    .article-media{
      position:relative;
      aspect-ratio:16/9;
      overflow:hidden;
      background:#0e1519;
    }
    .article-media img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .35s ease;
    }
    .article-card:hover img{transform:scale(1.04)}
    .article-body{padding:18px}
    .article-card h3{
      font-size:19px;
      line-height:1.35;
      margin-top:12px;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .article-card p{
      font-size:14px;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .sidebar{
      display:grid;
      gap:18px;
      position:sticky;
      top:96px;
    }
    .side-card{
      padding:20px;
      border-radius:var(--radius);
      background:linear-gradient(180deg,var(--panel),rgba(17,24,29,.86));
      border:1px solid var(--line);
      box-shadow:0 12px 28px rgba(0,0,0,.14);
    }
    .side-card h3{
      font-size:18px;
      line-height:1.3;
      margin-bottom:12px;
    }
    .rank-list,.check-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:12px;
    }
    .rank-list li{
      display:grid;
      grid-template-columns:30px 1fr;
      gap:10px;
      align-items:start;
      color:#d7e6e8;
      font-size:14px;
      padding-bottom:12px;
      border-bottom:1px solid rgba(151,178,184,.12);
    }
    .rank-list li:last-child{border-bottom:0;padding-bottom:0}
    .rank-no{
      width:28px;
      height:28px;
      border-radius:9px;
      display:grid;
      place-items:center;
      color:#081010;
      background:var(--primary);
      font-weight:900;
      font-size:13px;
    }
    .check-list li{
      position:relative;
      padding-left:26px;
      color:#cbdadd;
      font-size:14px;
    }
    .check-list li:before{
      content:"✓";
      position:absolute;
      left:0;
      top:0;
      color:var(--primary);
      font-weight:900;
    }
    .data-strip{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:16px;
    }
    .data-card{
      padding:22px;
      border-radius:var(--radius);
      background:
        linear-gradient(135deg,rgba(33,211,178,.09),transparent 52%),
        var(--panel);
      border:1px solid var(--line);
      transition:var(--ease);
    }
    .data-card:hover{
      transform:translateY(-3px);
      border-color:rgba(33,211,178,.34);
    }
    .data-num{
      font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
      font-size:34px;
      line-height:1;
      font-weight:900;
      color:#bafff3;
      letter-spacing:-.05em;
    }
    .data-label{
      margin-top:10px;
      color:var(--muted);
      font-size:14px;
    }
    .process-grid{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:16px;
      counter-reset:step;
    }
    .process-card{
      position:relative;
      padding:22px;
      border-radius:var(--radius);
      background:var(--panel);
      border:1px solid var(--line);
      min-height:205px;
      transition:var(--ease);
      overflow:hidden;
    }
    .process-card:hover{
      transform:translateY(-3px);
      border-color:rgba(58,168,255,.34);
    }
    .process-card:before{
      counter-increment:step;
      content:"0" counter(step);
      display:inline-grid;
      place-items:center;
      width:42px;
      height:42px;
      border-radius:14px;
      color:#061012;
      background:linear-gradient(135deg,var(--primary-2),var(--primary));
      font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
      font-weight:900;
      margin-bottom:20px;
    }
    .process-card h3{font-size:18px}
    .process-card p{font-size:14px}
    .compare-panel{
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:linear-gradient(135deg,rgba(24,35,42,.98),rgba(13,19,23,.98));
      overflow:hidden;
    }
    .compare-row{
      display:grid;
      grid-template-columns:220px 1fr 1fr;
      border-bottom:1px solid rgba(151,178,184,.13);
    }
    .compare-row:last-child{border-bottom:0}
    .compare-cell{
      padding:18px;
      color:#cbdadd;
      border-right:1px solid rgba(151,178,184,.13);
    }
    .compare-cell:last-child{border-right:0}
    .compare-head .compare-cell{
      color:#fff;
      font-weight:900;
      background:rgba(33,211,178,.08);
    }
    .compare-cell strong{color:#bafff3}
    .faq-wrap{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:16px;
    }
    .faq-item{
      border-radius:var(--radius);
      background:var(--panel);
      border:1px solid var(--line);
      overflow:hidden;
      transition:var(--ease);
    }
    .faq-item:hover{border-color:rgba(33,211,178,.32)}
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:19px 20px;
      font-weight:850;
      position:relative;
      padding-right:50px;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{
      content:"+";
      position:absolute;
      right:20px;
      top:50%;
      transform:translateY(-50%);
      width:24px;
      height:24px;
      border-radius:8px;
      display:grid;
      place-items:center;
      color:#061012;
      background:var(--primary);
      font-weight:900;
    }
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{
      margin:0;
      padding:0 20px 20px;
      font-size:14px;
    }
    .pager{
      display:flex;
      justify-content:center;
      gap:10px;
      margin-top:24px;
    }
    .pager a{
      min-width:42px;
      height:42px;
      padding:0 14px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:12px;
      background:var(--panel);
      border:1px solid var(--line);
      color:#d7e6e8;
      font-weight:800;
      transition:var(--ease);
    }
    .pager a:hover,.pager a.active{
      color:#071010;
      background:var(--primary);
      border-color:transparent;
      transform:translateY(-2px);
    }
    .cta{
      padding:44px;
      border-radius:var(--radius-lg);
      border:1px solid rgba(33,211,178,.28);
      background:
        linear-gradient(135deg,rgba(33,211,178,.14),transparent 45%),
        linear-gradient(90deg,rgba(15,22,27,.98),rgba(20,30,35,.98));
      display:grid;
      grid-template-columns:1fr auto;
      align-items:center;
      gap:24px;
      box-shadow:var(--shadow-sm);
    }
    .cta h2{
      margin:0;
      font-size:clamp(24px,3vw,36px);
      line-height:1.18;
      letter-spacing:-.03em;
    }
    .cta p{
      margin:10px 0 0;
      color:var(--muted);
      max-width:760px;
    }
    .site-footer{
      border-top:1px solid var(--line);
      background:#080c0f;
      padding:46px 0 22px;
    }
    .footer-inner{
      display:grid;
      grid-template-columns:1.4fr .8fr 1fr;
      gap:28px;
      padding-bottom:28px;
    }
    .footer-col h3{
      margin:0 0 12px;
      font-size:16px;
      color:#f4fbfb;
    }
    .footer-col p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .footer-col ul{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:8px;
    }
    .footer-col a,.footer-links a{
      color:#aebfc3;
      font-size:14px;
      transition:var(--ease);
    }
    .footer-col a:hover,.footer-links a:hover{color:var(--primary)}
    .footer-note{
      padding-top:18px;
      border-top:1px solid rgba(151,178,184,.13);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      color:var(--weak);
      font-size:13px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
    }
    @media (min-width:1440px){
      :root{--container:1280px}
      .hero-panel{min-height:470px}
    }
    @media (max-width:1199px){
      .content-layout{grid-template-columns:1fr}
      .sidebar{position:static;grid-template-columns:repeat(3,minmax(0,1fr))}
      .process-grid,.data-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
      .compare-row{grid-template-columns:180px 1fr 1fr}
    }
    @media (max-width:991px){
      .container{width:min(100% - 36px,var(--container))}
      .header-inner{height:70px}
      .menu-toggle{display:block}
      .site-nav{
        position:absolute;
        left:18px;
        right:18px;
        top:76px;
        display:none;
        padding:12px;
        border-radius:18px;
        background:rgba(13,19,23,.98);
        border:1px solid var(--line);
        box-shadow:var(--shadow);
      }
      .site-nav.open{display:block}
      .nav-list{display:grid;gap:8px}
      .nav-list a{width:100%;justify-content:center}
      .hero-content{padding:34px}
      .filter-bar{grid-template-columns:1fr 1fr}
      .filter-bar .btn{grid-column:1/-1}
      .feature-card{grid-template-columns:1fr}
      .feature-media{min-height:260px}
      .sidebar{grid-template-columns:1fr}
      .faq-wrap{grid-template-columns:1fr}
      .cta{grid-template-columns:1fr}
      .footer-inner{grid-template-columns:1fr 1fr}
      .footer-note{align-items:flex-start;flex-direction:column}
    }
    @media (max-width:767px){
      .container{width:min(100% - 28px,var(--container))}
      .brand-sub{display:none}
      .brand-name{font-size:16px;max-width:210px;overflow:hidden;text-overflow:ellipsis}
      .category-hero{padding-top:24px}
      .hero-panel{min-height:500px}
      .hero-content{padding:26px}
      .hero-desc{font-size:15px}
      .hero-actions{flex-direction:column}
      .btn{width:100%}
      .filter-bar{grid-template-columns:1fr;padding:13px}
      .section{padding:34px 0}
      .section-head{align-items:flex-start;flex-direction:column}
      .card-grid,.process-grid,.data-strip{grid-template-columns:1fr}
      .feature-copy{padding:22px}
      .feature-copy h2{font-size:24px}
      .compare-panel{overflow-x:auto}
      .compare-row{min-width:680px}
      .cta{padding:28px}
      .footer-inner{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .brand-mark{width:38px;height:38px;border-radius:12px}
      h1{font-size:32px}
      .hero-panel{border-radius:20px}
      .hero-content{padding:22px}
      .breadcrumb{font-size:13px}
      .tag-row{gap:8px}
      .data-num{font-size:30px}
      .compare-cell{padding:14px}
    }