/* roulang page: index */
:root{
      --bg:#090A0F;
      --bg-2:#101116;
      --bg-3:#14151C;
      --paper:#F7F3EC;
      --paper-2:#FBFAF7;
      --card:#171923;
      --card-2:#1B1D29;
      --line:rgba(255,255,255,.10);
      --line-dark:#E8E1D6;
      --text:#F4F6FB;
      --text-2:rgba(244,246,251,.78);
      --text-3:rgba(244,246,251,.56);
      --dark:#12131A;
      --accent:#7C3AED;
      --accent-2:#C026D3;
      --cyan:#22D3EE;
      --mint:#2DD4BF;
      --warn:#F59E0B;
      --ok:#10B981;
      --shadow:0 24px 70px rgba(0,0,0,.28);
      --shadow-soft:0 14px 40px rgba(0,0,0,.18);
      --radius:24px;
      --radius-lg:30px;
      --radius-sm:16px;
      --container:1240px;
      --gap:24px;
      --gap-lg:32px;
      --trans:.24s cubic-bezier(.2,.8,.2,1);
      --trans-slow:.45s cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      background:
        radial-gradient(circle at 20% 10%, rgba(124,58,237,.15), transparent 22%),
        radial-gradient(circle at 85% 15%, rgba(34,211,238,.12), transparent 18%),
        linear-gradient(180deg, #090A0F 0%, #0C0D13 26%, #0E1016 100%);
      color:var(--text);
      line-height:1.75;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(124,58,237,.35);color:#fff}
    .skip-link{
      position:absolute;left:-999px;top:12px;z-index:1000;
      background:#fff;color:#111;padding:10px 14px;border-radius:999px
    }
    .skip-link:focus{left:16px}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .section{padding:88px 0;position:relative}
    .section.paper{background:linear-gradient(180deg,var(--paper) 0%, var(--paper-2) 100%);color:#12131A}
    .section.dark{background:linear-gradient(180deg, rgba(10,11,16,.88), rgba(14,15,22,.96))}
    .section.tight{padding:68px 0}
    .eyebrow{
      display:inline-flex;align-items:center;gap:10px;
      padding:8px 14px;border:1px solid rgba(255,255,255,.12);
      border-radius:999px;background:rgba(255,255,255,.05);
      color:var(--text-2);font-size:13px;letter-spacing:.02em
    }
    .eyebrow.paper{
      border-color:rgba(18,19,26,.12);background:rgba(255,255,255,.64);color:#2b2d39
    }
    .eyebrow .dot{
      width:8px;height:8px;border-radius:50%;
      background:linear-gradient(135deg,var(--mint),var(--cyan));
      box-shadow:0 0 0 5px rgba(45,212,191,.1)
    }
    h1,h2,h3,h4,p{margin:0}
    h1{
      font-size:clamp(38px,5.2vw,70px);
      line-height:1.08;
      letter-spacing:-.04em;
      font-weight:800;
    }
    h2{
      font-size:clamp(30px,3.4vw,46px);
      line-height:1.12;
      letter-spacing:-.03em;
      font-weight:780;
    }
    h3{
      font-size:clamp(20px,2.1vw,28px);
      line-height:1.16;
      letter-spacing:-.02em;
      font-weight:740;
    }
    .lead{
      font-size:clamp(16px,1.35vw,18px);
      line-height:1.85;
      color:var(--text-2);
      max-width:58ch;
    }
    .paper .lead,.paper p,.paper li{color:#444a57}
    .muted{color:var(--text-3)}
    .paper .muted{color:#6b7280}
    .grid{display:grid;gap:var(--gap)}
    .btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:10px;
      min-height:48px;padding:0 20px;border-radius:999px;
      border:1px solid transparent;transition:transform var(--trans),background var(--trans),border-color var(--trans),box-shadow var(--trans),color var(--trans);
      font-weight:700;letter-spacing:.01em;cursor:pointer;white-space:nowrap
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible, .nav-link:focus-visible, .menu-btn:focus-visible, .card-link:focus-visible, .faq-q:focus-visible{
      outline:3px solid rgba(34,211,238,.35);outline-offset:3px
    }
    .btn-primary{
      background:linear-gradient(135deg,var(--accent),var(--accent-2));
      color:#fff;box-shadow:0 18px 40px rgba(124,58,237,.28)
    }
    .btn-primary:hover{box-shadow:0 22px 52px rgba(124,58,237,.36)}
    .btn-secondary{
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.14);color:#fff
    }
    .paper .btn-secondary{
      background:#fff;border-color:var(--line-dark);color:#12131A;box-shadow:var(--shadow-soft)
    }
    .btn-ghost{
      background:transparent;border-color:rgba(255,255,255,.14);color:#fff
    }
    .paper .btn-ghost{border-color:var(--line-dark);color:#12131A}
    .badge{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;font-size:12px;font-weight:700;
      border:1px solid rgba(255,255,255,.14);
      background:rgba(255,255,255,.05);color:var(--text-2)
    }
    .paper .badge{
      border-color:#e8dfd0;background:#fff;color:#414757
    }
    .badge strong{color:#fff}
    .paper .badge strong{color:#12131A}
    .card{
      border-radius:var(--radius);
      background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
      transition:transform var(--trans), border-color var(--trans), box-shadow var(--trans), background var(--trans);
    }
    .paper .card{
      background:#fff;
      border-color:var(--line-dark);
      box-shadow:0 16px 36px rgba(27,32,45,.07);
    }
    .card:hover{transform:translateY(-5px);border-color:rgba(124,58,237,.45);box-shadow:0 22px 55px rgba(0,0,0,.22)}
    .paper .card:hover{box-shadow:0 24px 40px rgba(27,32,45,.10)}
    .card-pad{padding:24px}
    .rule{height:1px;background:rgba(255,255,255,.09)}
    .paper .rule{background:var(--line-dark)}
    .nav-shell{
      position:sticky;top:14px;z-index:100;
      padding:0 0 8px;
    }
    .nav{
      width:min(var(--container),calc(100% - 18px));
      margin:0 auto;
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      padding:14px 18px;border-radius:999px;
      background:rgba(9,10,15,.70);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:0 18px 60px rgba(0,0,0,.26);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      transition:background var(--trans), border-color var(--trans), transform var(--trans);
    }
    .nav.is-light{
      background:rgba(255,255,255,.74);
      border-color:rgba(22,26,34,.10);
    }
    .brand{
      display:inline-flex;align-items:center;gap:12px;min-width:max-content
    }
    .brand-mark{
      width:38px;height:38px;border-radius:14px;
      background:linear-gradient(135deg,var(--accent),var(--cyan));
      box-shadow:0 14px 30px rgba(124,58,237,.28);
      position:relative;overflow:hidden;
    }
    .brand-mark:before,.brand-mark:after{
      content:"";position:absolute;border-radius:999px;background:rgba(255,255,255,.8)
    }
    .brand-mark:before{width:12px;height:12px;left:9px;top:10px}
    .brand-mark:after{width:8px;height:8px;right:9px;bottom:9px;background:rgba(255,255,255,.75)}
    .brand-name{
      font-size:15px;font-weight:800;letter-spacing:.02em
    }
    .nav.is-light .brand-name,.nav.is-light .nav-link,.nav.is-light .menu-btn{color:#111827}
    .nav-links{
      display:flex;align-items:center;gap:6px;flex-wrap:wrap
    }
    .nav-link{
      display:inline-flex;align-items:center;
      padding:10px 14px;border-radius:999px;
      color:var(--text-2);
      transition:background var(--trans),color var(--trans),transform var(--trans)
    }
    .nav-link:hover,.nav-link.active{
      background:rgba(124,58,237,.14);
      color:#fff
    }
    .nav.is-light .nav-link:hover,.nav.is-light .nav-link.active{color:#111827;background:rgba(124,58,237,.10)}
    .nav-cta{display:flex;align-items:center;gap:12px}
    .menu-btn{
      display:none;align-items:center;justify-content:center;
      width:44px;height:44px;border-radius:999px;background:transparent;
      border:1px solid rgba(255,255,255,.12);color:#fff;cursor:pointer
    }
    .nav.is-light .menu-btn{border-color:rgba(17,24,39,.14)}
    .menu-lines{width:18px;height:12px;position:relative}
    .menu-lines span{
      position:absolute;left:0;right:0;height:2px;border-radius:2px;background:currentColor;transition:transform var(--trans),top var(--trans),opacity var(--trans)
    }
    .menu-lines span:nth-child(1){top:0}
    .menu-lines span:nth-child(2){top:5px}
    .menu-lines span:nth-child(3){top:10px}
    .menu-open .menu-lines span:nth-child(1){top:5px;transform:rotate(45deg)}
    .menu-open .menu-lines span:nth-child(2){opacity:0}
    .menu-open .menu-lines span:nth-child(3){top:5px;transform:rotate(-45deg)}
    .mobile-panel{
      display:none;
      width:min(var(--container),calc(100% - 18px));
      margin:10px auto 0;
      padding:12px;
      border-radius:28px;
      background:rgba(9,10,15,.88);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:0 22px 60px rgba(0,0,0,.28);
      backdrop-filter:blur(18px);
    }
    .mobile-panel a{
      display:flex;align-items:center;justify-content:space-between;
      padding:14px 14px;border-radius:18px;color:#fff;font-weight:650
    }
    .mobile-panel a:hover{background:rgba(255,255,255,.06)}
    .mobile-panel .btn{width:100%}
    .hero{
      padding:54px 0 42px;
      position:relative;overflow:hidden;
    }
    .hero:before{
      content:"";position:absolute;inset:-2px 0 auto 0;height:520px;
      background:
        radial-gradient(circle at 18% 35%, rgba(124,58,237,.26), transparent 22%),
        radial-gradient(circle at 78% 18%, rgba(34,211,238,.16), transparent 17%),
        linear-gradient(180deg, rgba(9,10,15,.62), rgba(9,10,15,.02));
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap:32px;
      align-items:center;
      padding:34px 0 10px;
    }
    .hero-copy{padding:26px 0 18px}
    .hero h1 span{
      background:linear-gradient(90deg,#fff 0%, #ddd9ff 36%, #9dffd8 100%);
      -webkit-background-clip:text;background-clip:text;color:transparent
    }
    .hero-meta{
      display:flex;flex-wrap:wrap;gap:10px;margin:24px 0 0
    }
    .hero-stats{
      display:flex;flex-wrap:wrap;gap:14px;margin-top:28px
    }
    .stat{
      min-width:150px;
      padding:15px 16px;border-radius:18px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10)
    }
    .stat strong{
      display:block;font-size:22px;line-height:1.1;margin-bottom:6px;color:#fff
    }
    .stat span{font-size:13px;color:var(--text-3)}
    .hero-visual{
      position:relative;
      min-height:540px;
      display:grid;
      align-items:end;
    }
    .stage{
      position:relative;
      width:min(100%,520px);
      margin-left:auto;
      aspect-ratio:5/7;
      border-radius:34px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.09), rgba(255,255,255,.03)),
        radial-gradient(circle at 20% 16%, rgba(124,58,237,.32), transparent 24%),
        radial-gradient(circle at 78% 24%, rgba(34,211,238,.24), transparent 18%),
        linear-gradient(180deg, #161823 0%, #0F1118 100%);
      border:1px solid rgba(255,255,255,.12);
      box-shadow:0 28px 80px rgba(0,0,0,.42);
      overflow:hidden;
      transform:translateY(16px) rotate(1.4deg);
    }
    .stage:before{
      content:"";position:absolute;inset:0;
      background-image:
        linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
      background-size:36px 36px;
      opacity:.5;
      mask:linear-gradient(180deg, rgba(0,0,0,.95), rgba(0,0,0,.12));
    }
    .stage-inner{
      position:absolute;inset:22px;
      display:grid;grid-template-rows:auto auto 1fr;
      gap:16px;
    }
    .stage-top{
      display:flex;align-items:center;justify-content:space-between;gap:12px
    }
    .status{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;font-size:12px;font-weight:700;
      background:rgba(18,19,26,.75);border:1px solid rgba(255,255,255,.10)
    }
    .status i{
      width:8px;height:8px;border-radius:50%;
      display:inline-block;background:var(--mint);box-shadow:0 0 0 6px rgba(45,212,191,.12)
    }
    .cover-card{
      border-radius:24px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      padding:18px;
    }
    .cover-head{
      display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px
    }
    .mini-bars{display:flex;gap:6px}
    .mini-bars span{
      width:8px;height:8px;border-radius:999px;background:rgba(255,255,255,.34)
    }
    .mini-bars span:nth-child(1){background:var(--accent)}
    .mini-bars span:nth-child(2){background:var(--cyan)}
    .mini-bars span:nth-child(3){background:var(--mint)}
    .panel-grid{
      display:grid;grid-template-columns:1.05fr .95fr;gap:16px
    }
    .preview{
      padding:18px;border-radius:22px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09)
    }
    .preview h4{font-size:16px;margin-bottom:8px}
    .preview p{font-size:13px;line-height:1.7;color:var(--text-3)}
    .preview-list{
      display:grid;gap:10px
    }
    .preview-item{
      display:flex;align-items:center;justify-content:space-between;gap:12px;
      padding:12px 14px;border-radius:16px;background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08)
    }
    .preview-item strong{font-size:14px}
    .preview-item span{font-size:12px;color:var(--text-3)}
    .hero-search{
      margin-top:16px;
      padding:14px;border-radius:22px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.10)
    }
    .hero-search label{
      display:block;font-size:12px;color:var(--text-3);margin-bottom:10px
    }
    .search-row{display:flex;gap:10px}
    .search-row input{
      flex:1;min-height:46px;padding:0 14px;border-radius:16px;border:1px solid rgba(255,255,255,.12);
      background:rgba(8,9,14,.58);color:#fff;outline:none
    }
    .search-row input::placeholder{color:rgba(255,255,255,.42)}
    .search-row button{
      min-width:104px;border:none
    }
    .topic-strip{
      display:flex;flex-wrap:wrap;gap:10px;margin-top:20px
    }
    .topic{
      padding:10px 12px;border-radius:14px;
      background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);
      color:var(--text-2);font-size:13px
    }
    .section-head{
      display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:24px
    }
    .section-head .desc{max-width:62ch}
    .features-grid{
      display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:start
    }
    .big-feature{
      padding:30px;border-radius:var(--radius-lg);
      background:
        radial-gradient(circle at top right, rgba(124,58,237,.18), transparent 28%),
        linear-gradient(180deg, #141722 0%, #10131B 100%);
      border:1px solid rgba(255,255,255,.10);
      min-height:100%;
    }
    .feature-list{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:18px;
    }
    .feature{
      padding:22px;border-radius:24px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10)
    }
    .paper .feature{background:#fff}
    .feature .icon{
      width:44px;height:44px;border-radius:16px;
      display:grid;place-items:center;margin-bottom:16px;
      background:linear-gradient(135deg, rgba(124,58,237,.16), rgba(34,211,238,.12));
      border:1px solid rgba(255,255,255,.10);
      color:#fff;font-weight:800
    }
    .paper .feature .icon{color:#12131A;border-color:#e9dfd1}
    .feature h3{font-size:20px;margin-bottom:10px}
    .feature p{font-size:15px;line-height:1.8;color:var(--text-2)}
    .feature .mini{
      display:flex;align-items:center;gap:8px;margin-top:16px;color:var(--text-3);font-size:12px
    }
    .feature .mini .dot{width:8px;height:8px;border-radius:50%;background:var(--mint)}
    .capability-bar{
      margin-top:20px;
      display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px
    }
    .cap{
      padding:18px 18px 16px;border-radius:22px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10)
    }
    .cap strong{display:block;font-size:16px;margin-bottom:8px}
    .cap span{display:block;font-size:13px;color:var(--text-3);line-height:1.7}
    .flow-grid{
      display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px
    }
    .flow{
      padding:24px;border-radius:26px;background:#fff;border:1px solid var(--line-dark);box-shadow:0 16px 36px rgba(27,32,45,.08)
    }
    .flow .num{
      display:inline-flex;align-items:center;justify-content:center;
      width:42px;height:42px;border-radius:14px;margin-bottom:16px;
      background:linear-gradient(135deg, rgba(124,58,237,.12), rgba(34,211,238,.10));
      color:#12131A;font-weight:800
    }
    .flow h3{font-size:22px;margin-bottom:10px}
    .flow p{font-size:15px;line-height:1.8;color:#4b5563}
    .flow .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
    .tag{
      display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;
      background:#f5f2eb;border:1px solid #e8e1d6;color:#444b57;font-size:12px;font-weight:650
    }
    .case-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:18px;align-items:stretch
    }
    .case-big{
      padding:28px;border-radius:30px;background:linear-gradient(180deg,#fff,#faf7f0);border:1px solid var(--line-dark)
    }
    .case-big h3{font-size:26px;margin-bottom:10px}
    .case-big p{font-size:15px;line-height:1.85;color:#4b5563}
    .metric-row{
      display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:20px
    }
    .metric{
      padding:16px;border-radius:18px;background:#fff;border:1px solid #ece3d6
    }
    .metric strong{display:block;font-size:22px;line-height:1.1;margin-bottom:6px;color:#12131A}
    .metric span{font-size:13px;color:#5e6674}
    .case-side{
      display:grid;gap:18px
    }
    .case{
      padding:22px;border-radius:26px;background:#fff;border:1px solid var(--line-dark)
    }
    .case h3{font-size:20px;margin-bottom:8px}
    .case p{font-size:14px;line-height:1.82;color:#556070}
    .case .meta{
      display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 16px
    }
    .case .link{
      display:inline-flex;align-items:center;gap:8px;color:#111827;font-weight:750
    }
    .case .link span{transition:transform var(--trans)}
    .case .link:hover span{transform:translateX(3px)}
    .pricing-grid{
      display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px
    }
    .price{
      padding:26px;border-radius:28px;background:#fff;border:1px solid var(--line-dark);
      display:flex;flex-direction:column;gap:16px;position:relative
    }
    .price.recommend{
      border-color:rgba(124,58,237,.45);
      box-shadow:0 22px 50px rgba(124,58,237,.10);
      transform:translateY(-6px)
    }
    .recommend-badge{
      position:absolute;top:18px;right:18px;
      padding:7px 12px;border-radius:999px;
      background:linear-gradient(135deg,var(--accent),var(--accent-2));
      color:#fff;font-size:12px;font-weight:800
    }
    .price .name{font-size:20px;font-weight:800}
    .price .who{color:#5b6271;font-size:14px}
    .amount{
      font-size:40px;line-height:1;font-weight:850;letter-spacing:-.04em;color:#12131A
    }
    .amount small{font-size:14px;font-weight:700;color:#697386}
    .price ul{
      margin:0;padding:0;list-style:none;display:grid;gap:10px
    }
    .price li{
      display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#404756
    }
    .price li:before{
      content:"";flex:0 0 8px;width:8px;height:8px;border-radius:50%;
      margin-top:8px;background:linear-gradient(135deg,var(--accent),var(--cyan))
    }
    .price .btn{margin-top:auto;width:100%}
    .news-layout{
      display:grid;grid-template-columns:.95fr 1.05fr;gap:20px;align-items:start
    }
    .news-intro{
      position:sticky;top:116px;
      padding:26px;border-radius:28px;background:#11131a;color:#fff;
      border:1px solid rgba(255,255,255,.10);
    }
    .news-intro .lead{max-width:none;color:rgba(255,255,255,.75)}
    .news-intro .notes{
      display:grid;gap:12px;margin-top:18px
    }
    .note{
      padding:14px 16px;border-radius:18px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08)
    }
    .note strong{display:block;margin-bottom:6px}
    .news-list{
      display:grid;gap:14px
    }
    .news-item{
      padding:20px 20px 18px;border-radius:24px;background:#fff;border:1px solid var(--line-dark);
      display:grid;gap:10px;transition:transform var(--trans), box-shadow var(--trans), border-color var(--trans)
    }
    .news-item:hover{transform:translateY(-4px);border-color:rgba(124,58,237,.38);box-shadow:0 18px 38px rgba(27,32,45,.08)}
    .news-title{
      display:flex;justify-content:space-between;gap:12px;align-items:flex-start
    }
    .news-item h3{font-size:20px;line-height:1.35}
    .news-item p{font-size:14px;line-height:1.82;color:#566171}
    .news-meta{
      display:flex;flex-wrap:wrap;gap:8px;align-items:center
    }
    .news-meta .chip{
      display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;
      background:#f5f2eb;border:1px solid #e8e1d6;font-size:12px;color:#46505e
    }
    .news-meta .chip.time{background:#eefaf7;border-color:#d6f5ec;color:#166d63}
    .news-arrow{
      flex:0 0 auto;
      width:40px;height:40px;border-radius:14px;
      display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(124,58,237,.12), rgba(34,211,238,.12));
      color:#111827;font-weight:900;
      transition:transform var(--trans), background var(--trans)
    }
    .news-item:hover .news-arrow{transform:translateX(3px);background:linear-gradient(135deg, rgba(124,58,237,.18), rgba(34,211,238,.16))}
    .empty-state{
      padding:24px;border-radius:24px;background:#fff;border:1px dashed #d8cdbd;color:#495261;
      display:grid;place-items:center;text-align:center;gap:12px;min-height:240px
    }
    .empty-state .empty-ic{
      width:58px;height:58px;border-radius:20px;
      background:linear-gradient(135deg, rgba(124,58,237,.12), rgba(34,211,238,.12));
      display:grid;place-items:center;font-size:24px
    }
    .faq-list{
      display:grid;gap:14px
    }
    .faq-item{
      border-radius:22px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      overflow:hidden
    }
    .paper .faq-item{background:#fff;border-color:var(--line-dark)}
    .faq-q{
      width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
      padding:20px 22px;background:transparent;border:0;color:inherit;cursor:pointer;text-align:left
    }
    .faq-q strong{font-size:18px;line-height:1.4}
    .faq-q .plus{
      flex:0 0 auto;width:36px;height:36px;border-radius:999px;
      display:grid;place-items:center;background:rgba(124,58,237,.10);border:1px solid rgba(124,58,237,.18);
      transition:transform var(--trans)
    }
    .faq-item.open .faq-q .plus{transform:rotate(45deg)}
    .faq-a{
      max-height:0;overflow:hidden;transition:max-height var(--trans-slow);
      padding:0 22px
    }
    .faq-item.open .faq-a{max-height:200px;padding-bottom:20px}
    .faq-a p{font-size:15px;line-height:1.9;color:#5b6473}
    .cta{
      padding:28px;
      border-radius:36px;
      background:
        radial-gradient(circle at 18% 30%, rgba(124,58,237,.22), transparent 22%),
        radial-gradient(circle at 80% 20%, rgba(34,211,238,.16), transparent 18%),
        linear-gradient(135deg,#12131a,#090a0f);
      border:1px solid rgba(255,255,255,.12);
      box-shadow:var(--shadow);
      overflow:hidden;
      position:relative;
    }
    .cta:before{
      content:"";position:absolute;inset:0;
      background-image:linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
      background-size:42px 42px;
      opacity:.28;pointer-events:none
    }
    .cta-grid{
      position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:center
    }
    .cta-box{
      padding:20px;border-radius:24px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10)
    }
    .cta-list{
      display:grid;gap:10px
    }
    .cta-list li{
      list-style:none;display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.82)
    }
    .cta-list li:before{
      content:"";width:10px;height:10px;border-radius:50%;margin-top:8px;flex:0 0 auto;
      background:linear-gradient(135deg,var(--mint),var(--cyan));box-shadow:0 0 0 6px rgba(34,211,238,.10)
    }
    .footer{
      padding:34px 0 46px;color:rgba(244,246,251,.76)
    }
    .footer-inner{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;
      padding-top:24px;border-top:1px solid rgba(255,255,255,.10)
    }
    .footer .brand-name{font-size:16px;color:#fff}
    .footer p{font-size:14px;line-height:1.9;color:rgba(244,246,251,.68);max-width:56ch}
    .footer-links{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 18px
    }
    .footer-links a{
      display:inline-flex;padding:8px 0;color:rgba(244,246,251,.76)
    }
    .footer-links a:hover{color:#fff}
    .copyright{
      margin-top:22px;font-size:13px;color:rgba(244,246,251,.48)
    }
    .kicker{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap
    }
    .line-dot{
      width:8px;height:8px;border-radius:50%;background:var(--mint);display:inline-block
    }
    .center-note{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap
    }
    .paper .section-head .muted,
    .paper .section-head .desc,
    .paper .section-head p,
    .paper .section-head span{color:#5f6878}
    .stack{display:grid;gap:16px}
    .small-note{font-size:13px;color:var(--text-3)}
    .paper .small-note{color:#697386}
    .link-btn{
      display:inline-flex;align-items:center;gap:8px;font-weight:750;color:#111827
    }
    .link-btn:hover span{transform:translateX(3px)}
    .link-btn span{transition:transform var(--trans)}
    .anchor-top{
      position:absolute;top:-88px
    }
    @media (max-width: 1199px){
      .hero-grid,.features-grid,.case-grid,.news-layout,.cta-grid,.footer-inner{grid-template-columns:1fr}
      .hero-visual{min-height:auto}
      .stage{margin:10px auto 0;transform:none;width:min(100%,520px)}
      .news-intro{position:static}
      .capability-bar{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width: 991px){
      .nav-links,.nav-cta .btn-secondary{display:none}
      .menu-btn{display:inline-flex}
      .mobile-panel.show{display:block}
      .section{padding:72px 0}
      .hero{padding-top:34px}
      .feature-list,.flow-grid,.pricing-grid,.metric-row{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 767px){
      .container{width:min(var(--container),calc(100% - 24px))}
      .nav{padding:12px 14px;border-radius:28px}
      h1{font-size:clamp(34px,10vw,42px)}
      h2{font-size:clamp(26px,8vw,34px)}
      .hero-grid{gap:24px}
      .btn-row{gap:10px}
      .btn{width:100%}
      .search-row{flex-direction:column}
      .search-row button{width:100%}
      .feature-list,.flow-grid,.pricing-grid,.metric-row,.capability-bar{grid-template-columns:1fr}
      .case-big,.case,.price,.feature,.flow,.news-item,.faq-q,.cta,.big-feature,.news-intro{padding-left:18px;padding-right:18px}
      .section-head{flex-direction:column;align-items:flex-start}
      .footer-inner{grid-template-columns:1fr}
      .footer-links{grid-template-columns:1fr 1fr}
      .faq-q strong{font-size:16px}
      .news-title{flex-direction:column}
    }
    @media (max-width: 560px){
      .hero{padding-top:24px}
      .hero-copy{padding-top:10px}
      .stat{min-width:calc(50% - 8px);flex:1 1 calc(50% - 8px)}
      .topic{font-size:12px}
      .footer-links{grid-template-columns:1fr}
      .nav-shell{top:8px}
      .nav{width:min(var(--container),calc(100% - 12px))}
      .stage{aspect-ratio:1/1.1}
      .panel-grid{grid-template-columns:1fr}
      .hero-meta,.hero-stats,.btn-row{width:100%}
    }

/* roulang page: article */
:root{
      --bg:#090A0F;
      --bg-2:#101116;
      --bg-3:#14151C;
      --paper:#F7F3EC;
      --paper-2:#FBFAF7;
      --card:#171923;
      --card-2:#1B1D29;
      --line:rgba(255,255,255,.10);
      --line-dark:#E8E1D6;
      --text:#F4F6FB;
      --text-2:rgba(244,246,251,.78);
      --text-3:rgba(244,246,251,.56);
      --dark:#12131A;
      --accent:#7C3AED;
      --accent-2:#C026D3;
      --cyan:#22D3EE;
      --mint:#2DD4BF;
      --warn:#F59E0B;
      --ok:#10B981;
      --shadow:0 24px 70px rgba(0,0,0,.28);
      --shadow-soft:0 14px 40px rgba(0,0,0,.18);
      --radius:24px;
      --radius-lg:30px;
      --radius-sm:16px;
      --container:1240px;
      --gap:24px;
      --gap-lg:32px;
      --trans:.24s cubic-bezier(.2,.8,.2,1);
      --trans-slow:.45s cubic-bezier(.2,.8,.2,1);
    }

    *{box-sizing:border-box}
    html{
      scroll-behavior:smooth;
      scroll-padding-top:110px;
    }
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      background:
        radial-gradient(circle at 20% 10%, rgba(124,58,237,.15), transparent 22%),
        radial-gradient(circle at 85% 15%, rgba(34,211,238,.12), transparent 18%),
        linear-gradient(180deg, #090A0F 0%, #0C0D13 26%, #0E1016 100%);
      color:var(--text);
      line-height:1.75;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:
        linear-gradient(transparent 0 0),
        repeating-linear-gradient(90deg, rgba(255,255,255,.03) 0 1px, transparent 1px 80px),
        repeating-linear-gradient(0deg, rgba(255,255,255,.02) 0 1px, transparent 1px 80px);
      opacity:.35;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.75), transparent 70%);
      z-index:-1;
    }
    ::selection{background:rgba(124,58,237,.28);color:#fff}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{border:0;background:none}
    p{margin:0}
    h1,h2,h3,h4,h5,h6{margin:0;font-weight:800;letter-spacing:-.03em}
    ul,ol{margin:0;padding-left:1.2em}
    hr{border:0;border-top:1px solid rgba(18,19,26,.10);margin:24px 0}

    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .section{padding:88px 0;position:relative}
    .section.tight{padding:68px 0}
    .section.dark{
      background:linear-gradient(180deg, rgba(10,11,16,.86), rgba(14,15,22,.98));
      color:var(--text);
    }
    .section.paper{
      background:linear-gradient(180deg,var(--paper) 0%, var(--paper-2) 100%);
      color:#12131A;
    }

    .eyebrow{
      display:inline-flex;align-items:center;gap:10px;
      padding:8px 14px;border:1px solid rgba(255,255,255,.12);
      border-radius:999px;background:rgba(255,255,255,.05);
      color:var(--text-2);font-size:13px;letter-spacing:.02em
    }
    .eyebrow.paper{
      border-color:rgba(18,19,26,.12);background:rgba(255,255,255,.64);color:#2b2d39
    }
    .eyebrow .dot{
      width:8px;height:8px;border-radius:50%;
      background:linear-gradient(135deg,var(--mint),var(--cyan));
      box-shadow:0 0 0 5px rgba(45,212,191,.1)
    }
    .lead{
      font-size:clamp(16px,1.35vw,18px);
      line-height:1.85;
      color:var(--text-2);
      max-width:60ch;
    }
    .paper .lead,.paper p,.paper li{color:#444a57}
    .muted{color:var(--text-3)}
    .paper .muted{color:#6b7280}
    .grid{display:grid;gap:var(--gap)}
    .btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:10px;
      min-height:48px;padding:0 20px;border-radius:999px;
      border:1px solid transparent;
      transition:transform var(--trans),background var(--trans),border-color var(--trans),box-shadow var(--trans),color var(--trans),opacity var(--trans);
      font-weight:700;letter-spacing:.01em;cursor:pointer;white-space:nowrap
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,
    .nav-link:focus-visible,
    .menu-btn:focus-visible,
    .card-link:focus-visible,
    .faq-q:focus-visible,
    .mini-links a:focus-visible{
      outline:3px solid rgba(34,211,238,.35);
      outline-offset:3px
    }
    .btn-primary{
      background:linear-gradient(135deg,var(--accent),var(--accent-2));
      color:#fff;box-shadow:0 18px 40px rgba(124,58,237,.28)
    }
    .btn-primary:hover{box-shadow:0 22px 52px rgba(124,58,237,.36)}
    .btn-secondary{
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.14);color:#fff
    }
    .paper .btn-secondary{
      background:#fff;border-color:var(--line-dark);color:#12131A;box-shadow:var(--shadow-soft)
    }
    .btn-ghost{
      background:transparent;border-color:rgba(255,255,255,.14);color:#fff
    }
    .paper .btn-ghost{border-color:var(--line-dark);color:#12131A}
    .badge{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;font-size:12px;font-weight:700;
      border:1px solid rgba(255,255,255,.14);
      background:rgba(255,255,255,.05);color:var(--text-2)
    }
    .paper .badge{
      border-color:#e8dfd0;background:#fff;color:#414757
    }
    .badge strong{color:#fff}
    .paper .badge strong{color:#12131A}
    .card{
      border-radius:var(--radius);
      background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
      transition:transform var(--trans), border-color var(--trans), box-shadow var(--trans), background var(--trans);
    }
    .paper .card{
      background:#fff;
      border-color:var(--line-dark);
      box-shadow:0 16px 36px rgba(27,32,45,.07);
    }
    .card:hover{transform:translateY(-5px);border-color:rgba(124,58,237,.45);box-shadow:0 22px 55px rgba(0,0,0,.22)}
    .paper .card:hover{box-shadow:0 24px 40px rgba(27,32,45,.10)}
    .card-pad{padding:24px}

    .nav-shell{
      position:sticky;top:14px;z-index:1000;
      padding:0 0 8px;
    }
    .nav{
      width:min(var(--container),calc(100% - 18px));
      margin:0 auto;
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      padding:14px 18px;border-radius:999px;
      background:rgba(9,10,15,.70);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:0 18px 60px rgba(0,0,0,.26);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      transition:background var(--trans), border-color var(--trans), transform var(--trans), box-shadow var(--trans);
    }
    .nav.is-light{
      background:rgba(255,255,255,.78);
      border-color:rgba(22,26,34,.10);
      box-shadow:0 18px 50px rgba(18,19,26,.08);
    }
    .brand{
      display:inline-flex;align-items:center;gap:12px;min-width:max-content;
      color:#fff
    }
    .nav.is-light .brand{color:#12131A}
    .brand-mark{
      width:38px;height:38px;border-radius:14px;
      background:linear-gradient(135deg,var(--accent),var(--cyan));
      box-shadow:0 14px 30px rgba(124,58,237,.28);
      position:relative;overflow:hidden;
      flex:0 0 auto;
    }
    .brand-mark:before,.brand-mark:after{
      content:"";position:absolute;border-radius:999px;background:rgba(255,255,255,.86)
    }
    .brand-mark:before{width:14px;height:14px;left:8px;top:10px;box-shadow:14px 8px 0 rgba(255,255,255,.44)}
    .brand-mark:after{width:16px;height:3px;left:9px;bottom:9px;opacity:.82}
    .brand-name{
      font-size:15px;font-weight:800;letter-spacing:.02em
    }
    .nav-links{
      display:flex;align-items:center;gap:8px;flex-wrap:wrap;
      margin-left:auto;
    }
    .nav-link{
      display:inline-flex;align-items:center;justify-content:center;
      min-height:42px;padding:0 14px;border-radius:999px;
      color:var(--text-2);font-size:14px;font-weight:700;
      transition:background var(--trans), color var(--trans), transform var(--trans), opacity var(--trans);
    }
    .nav-link:hover,
    .nav-link.active{
      background:rgba(124,58,237,.14);
      color:#fff;
    }
    .nav.is-light .nav-link{color:#4d5666}
    .nav.is-light .nav-link:hover,
    .nav.is-light .nav-link.active{
      background:#ece5ff;color:#2a1447
    }
    .menu-btn{
      display:none;
      width:48px;height:48px;border-radius:16px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.05);
      cursor:pointer;
      align-items:center;justify-content:center;flex-direction:column;gap:5px;
      transition:background var(--trans), border-color var(--trans), transform var(--trans);
      flex:0 0 auto;
    }
    .nav.is-light .menu-btn{
      background:#fff;border-color:rgba(18,19,26,.10)
    }
    .menu-btn:hover{transform:translateY(-1px)}
    .menu-btn span{
      width:18px;height:2px;border-radius:2px;background:#fff;display:block;
      transition:transform var(--trans), opacity var(--trans), background var(--trans)
    }
    .nav.is-light .menu-btn span{background:#12131A}
    .menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
    .menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

    .article-hero{
      padding:48px 0 36px;
      overflow:hidden;
    }
    .article-hero::before{
      content:"";
      position:absolute;inset:0;
      background:
        radial-gradient(circle at 18% 24%, rgba(124,58,237,.14), transparent 25%),
        radial-gradient(circle at 82% 14%, rgba(34,211,238,.10), transparent 20%),
        linear-gradient(180deg, rgba(255,255,255,.02), transparent 45%);
      pointer-events:none;
    }
    .breadcrumb{
      display:flex;flex-wrap:wrap;align-items:center;gap:8px;
      margin-bottom:18px;font-size:13px;color:var(--text-3)
    }
    .breadcrumb a{color:rgba(255,255,255,.74)}
    .breadcrumb a:hover{text-decoration:underline;text-underline-offset:3px}
    .breadcrumb .sep{opacity:.5}
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:minmax(0,1.36fr) minmax(320px,.92fr);
      gap:32px;
      align-items:start;
    }
    .hero-copy h1{
      font-size:clamp(36px,5.3vw,68px);
      line-height:1.08;
      margin:16px 0 18px;
      letter-spacing:-.04em;
      max-width:11.5ch;
    }
    .meta-row{
      display:flex;flex-wrap:wrap;gap:10px;
      margin:20px 0 26px
    }
    .meta-item{
      padding:9px 12px;border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      color:var(--text-2);
      font-size:13px;
    }
    .hero-note{
      margin-top:22px;
      padding:20px;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.10);
      background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.025));
    }
    .hero-note ul{
      margin:0;
      padding-left:18px;
      color:var(--text-2)
    }
    .hero-note li + li{margin-top:8px}
    .hero-panel{
      position:sticky;
      top:108px;
    }
    .panel-title{
      display:flex;align-items:center;justify-content:space-between;gap:12px;
      margin-bottom:18px
    }
    .panel-title h2{
      font-size:20px;line-height:1.2
    }
    .summary-list{
      list-style:none;margin:0;padding:0;
      display:grid;gap:12px
    }
    .summary-list li{
      display:flex;justify-content:space-between;gap:14px;align-items:flex-start;
      padding:12px 14px;border-radius:18px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:var(--text-2);
      font-size:14px
    }
    .summary-list strong{
      color:#fff;
      font-weight:800;
      text-align:right
    }
    .stat-grid{
      display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
      margin-top:16px
    }
    .stat{
      padding:14px;
      border-radius:18px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08)
    }
    .stat .num{
      display:block;
      font-size:22px;font-weight:800;line-height:1;
      margin-bottom:8px;
      background:linear-gradient(135deg,#fff,var(--cyan));
      -webkit-background-clip:text;background-clip:text;color:transparent
    }
    .stat span:last-child{
      font-size:12px;color:var(--text-3)
    }

    .content-grid{
      display:grid;
      grid-template-columns:minmax(0,1.22fr) minmax(290px,.78fr);
      gap:24px;
      align-items:start;
    }
    .article-main{
      background:#fff;
    }
    .article-head{
      padding:24px 24px 0;
      display:flex;
      justify-content:space-between;
      align-items:flex-start;
      gap:18px;
      flex-wrap:wrap;
      color:#12131A;
    }
    .article-head .eyebrow.paper{background:#fff}
    .article-topline{
      display:flex;flex-wrap:wrap;gap:10px;align-items:center
    }
    .article-topline .badge{
      border-color:#e8dfd0;background:#fbfaf7;color:#414757
    }
    .article-body{
      padding:24px;
    }
    .article-content{
      font-size:16px;
      line-height:1.9;
      color:#374151;
      word-break:break-word;
    }
    .article-content > * + *{margin-top:1.05em}
    .article-content h2{
      font-size:26px;
      line-height:1.25;
      padding-left:14px;
      border-left:4px solid var(--accent);
      margin-top:1.9em;
      color:#13151d;
    }
    .article-content h3{
      font-size:20px;
      line-height:1.3;
      margin-top:1.6em;
      color:#151923;
    }
    .article-content p{
      color:#3d4654;
    }
    .article-content a{
      color:var(--accent);
      text-decoration:underline;
      text-underline-offset:3px;
    }
    .article-content ul,
    .article-content ol{
      padding-left:1.25em;
    }
    .article-content li + li{margin-top:6px}
    .article-content blockquote{
      margin:1.4em 0;
      padding:18px 20px;
      background:#f4efe6;
      border-left:4px solid var(--accent);
      border-radius:18px;
      color:#344152
    }
    .article-content pre{
      background:#111318;
      color:#e8eefc;
      padding:18px;
      border-radius:18px;
      overflow:auto;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)
    }
    .article-content code{
      background:rgba(124,58,237,.08);
      color:#5b21b6;
      padding:.12em .38em;
      border-radius:8px;
      font-size:.95em
    }
    .article-content pre code{
      background:transparent;
      color:inherit;
      padding:0;
      border-radius:0
    }
    .article-content table{
      width:100%;
      display:block;
      overflow-x:auto;
      border-collapse:separate;
      border-spacing:0;
      margin:1.2em 0;
      border:1px solid #e4ded3;
      border-radius:18px;
      background:#fff
    }
    .article-content th,
    .article-content td{
      padding:12px 14px;
      border-bottom:1px solid #ece4d8;
      border-right:1px solid #ece4d8;
      white-space:nowrap;
      text-align:left;
      vertical-align:top
    }
    .article-content th:last-child,
    .article-content td:last-child{border-right:none}
    .article-content tr:last-child td{border-bottom:none}
    .article-content img{
      border-radius:18px;
      margin:16px 0;
      box-shadow:0 16px 34px rgba(17,24,39,.08)
    }
    .article-content figure{margin:18px 0}
    .article-content figure figcaption{
      margin-top:8px;
      font-size:13px;
      color:#6b7280
    }
    .article-content hr{
      border-top:1px solid #e8e1d6;
      margin:28px 0
    }
    .article-content mark{
      background:rgba(34,211,238,.18);
      color:inherit;
      border-radius:6px;
      padding:0 .2em
    }

    .side-stack{
      display:grid;
      gap:24px;
      position:sticky;
      top:108px;
    }
    .side-card{
      background:#fff;
      color:#12131A;
    }
    .side-card .card-pad{padding:22px}
    .side-card h3{
      font-size:20px;
      margin-bottom:14px;
      color:#12131A
    }
    .info-list{
      list-style:none;margin:0;padding:0;
      display:grid;gap:10px
    }
    .info-list li{
      display:flex;justify-content:space-between;gap:10px;
      font-size:14px;
      color:#374151;
      padding-bottom:10px;
      border-bottom:1px solid #ebe3d6
    }
    .info-list li:last-child{padding-bottom:0;border-bottom:none}
    .mini-links{
      display:grid;gap:10px
    }
    .mini-links a{
      display:flex;justify-content:space-between;align-items:center;gap:12px;
      padding:12px 14px;
      border-radius:14px;
      background:#f7f5ef;
      border:1px solid #e8e1d6;
      color:#1f2937;
      transition:transform var(--trans),border-color var(--trans),background var(--trans)
    }
    .mini-links a:hover{
      transform:translateY(-2px);
      border-color:#c8b1ff;
      background:#fff
    }
    .mini-links span{
      color:#7c3aed;
      font-weight:800
    }
    .reading-tips{
      background:linear-gradient(180deg,#fff, #fcfaf6);
    }
    .reading-tips p{
      color:#4b5563;
      font-size:14px;
      line-height:1.8
    }

    .section-head{
      display:flex;
      flex-direction:column;
      gap:12px;
      margin-bottom:24px;
    }
    .section-head h2{
      font-size:clamp(28px,3.5vw,46px);
      line-height:1.1;
      letter-spacing:-.03em;
    }
    .section-head .lead{max-width:64ch}
    .section-head .eyebrow.paper{width:max-content}

    .related-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:20px;
    }
    .mini-card{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height:220px;
      padding:22px;
      background:#fff;
      color:#12131A;
    }
    .mini-card .tag{
      align-self:flex-start
    }
    .mini-card h3{
      margin:14px 0 10px;
      font-size:22px;
      line-height:1.22
    }
    .mini-card p{
      color:#4b5563;
      font-size:15px;
      line-height:1.8
    }
    .card-link{
      display:inline-flex;align-items:center;gap:10px;
      margin-top:22px;
      color:var(--accent);
      font-weight:800
    }
    .arrow{
      display:inline-block;
      transition:transform var(--trans)
    }
    .card:hover .arrow{transform:translateX(4px)}

    .cta-card{
      padding:30px;
      background:
        radial-gradient(circle at 18% 24%, rgba(124,58,237,.22), transparent 28%),
        radial-gradient(circle at 86% 22%, rgba(34,211,238,.12), transparent 24%),
        linear-gradient(135deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
      display:flex;
      justify-content:space-between;
      gap:24px;
      align-items:center;
    }
    .cta-card h2{
      margin:10px 0 0;
      font-size:clamp(28px,4vw,44px);
      line-height:1.08;
      max-width:12ch;
    }
    .cta-copy{max-width:760px}

    .faq-list{
      display:grid;
      gap:14px;
    }
    .faq-item{
      border:1px solid rgba(18,19,26,.10);
      border-radius:20px;
      background:#fff;
      overflow:hidden;
      box-shadow:0 10px 24px rgba(27,32,45,.05);
    }
    .faq-q{
      width:100%;
      text-align:left;
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:16px;
      padding:18px 20px;
      background:transparent;
      border:none;
      cursor:pointer;
      font-weight:800;
      color:#12131A
    }
    .faq-q span:first-child{
      line-height:1.45;
    }
    .faq-q .icon{
      width:28px;height:28px;border-radius:50%;
      background:#f2ecff;
      display:grid;place-items:center;
      color:var(--accent);
      transition:transform var(--trans),background var(--trans)
    }
    .faq-item.open .faq-q .icon{transform:rotate(45deg);background:#ece5ff}
    .faq-a{
      max-height:0;
      overflow:hidden;
      transition:max-height var(--trans-slow);
    }
    .faq-a-inner{
      padding:0 20px 18px;
      color:#475569;
      line-height:1.8
    }

    .empty-state{
      padding:30px 24px;
      text-align:center;
      border:1px dashed #d8ccb9;
      background:#fbfaf7;
      border-radius:20px;
    }
    .empty-state h3{
      margin:0 0 10px;
      font-size:22px;
      color:#12131A
    }
    .empty-state p{
      color:#6b7280;
      margin-bottom:18px;
    }

    .footer{
      padding:56px 0 34px;
      color:var(--text-2);
    }
    .footer-inner{
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:26px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.10);
    }
    .footer .brand{color:#fff}
    .footer p{
      color:var(--text-2);
      line-height:1.85
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      justify-content:flex-start;
    }
    .footer-links a{
      padding:10px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      color:var(--text-2);
      transition:transform var(--trans),border-color var(--trans),background var(--trans),color var(--trans)
    }
    .footer-links a:hover{
      transform:translateY(-2px);
      border-color:rgba(124,58,237,.35);
      background:rgba(124,58,237,.10);
      color:#fff
    }
    .copyright{
      margin-top:20px;
      color:var(--text-3);
      font-size:13px
    }

    @media (max-width: 1180px){
      .hero-grid,
      .content-grid{
        grid-template-columns:1fr;
      }
      .hero-panel,
      .side-stack{
        position:relative;
        top:auto;
      }
      .hero-copy h1{max-width:none}
    }

    @media (max-width: 992px){
      .section{padding:76px 0}
      .article-hero{padding-top:32px}
      .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .cta-card{flex-direction:column;align-items:flex-start}
      .cta-card h2{max-width:none}
    }

    @media (max-width: 768px){
      .nav{
        border-radius:24px;
        padding:12px 14px;
      }
      .menu-btn{display:inline-flex}
      .nav-links{
        position:absolute;
        left:0;right:0;top:calc(100% + 12px);
        margin-left:0;
        display:grid;
        gap:8px;
        padding:14px;
        border-radius:24px;
        background:rgba(9,10,15,.96);
        border:1px solid rgba(255,255,255,.10);
        box-shadow:0 20px 50px rgba(0,0,0,.35);
        backdrop-filter:blur(18px);
        -webkit-backdrop-filter:blur(18px);
        max-height:0;
        overflow:hidden;
        opacity:0;
        transform:translateY(-8px);
        pointer-events:none;
        transition:max-height var(--trans-slow),opacity var(--trans),transform var(--trans);
      }
      .nav.is-light .nav-links{
        background:rgba(255,255,255,.95);
        border-color:rgba(18,19,26,.08);
      }
      .nav-links.is-open{
        max-height:460px;
        opacity:1;
        transform:translateY(0);
        pointer-events:auto;
      }
      .nav-link{
        justify-content:flex-start;
        min-height:44px;
        padding:0 14px;
      }
      .hero-copy h1{font-size:clamp(34px,8vw,44px)}
      .stat-grid{grid-template-columns:1fr}
      .article-head,
      .article-body,
      .side-card .card-pad{
        padding-left:18px;
        padding-right:18px;
      }
      .related-grid{grid-template-columns:1fr}
      .footer-inner{grid-template-columns:1fr}
    }

    @media (max-width: 560px){
      .container{width:min(var(--container),calc(100% - 24px))}
      .section{padding:64px 0}
      .article-hero{padding-top:24px}
      .hero-copy h1{font-size:clamp(30px,10vw,40px)}
      .section-head h2{font-size:clamp(26px,9vw,36px)}
      .card-pad{padding:20px}
      .cta-card{padding:22px}
      .btn{width:100%}
      .btn-row{width:100%}
      .btn-row .btn{flex:1 1 100%}
      .meta-row{gap:8px}
      .meta-item{width:100%;text-align:center}
      .faq-q{padding:16px}
      .faq-a-inner{padding:0 16px 16px}
      .breadcrumb{font-size:12px}
      .article-content{font-size:15px}
      .article-content h2{font-size:22px}
      .article-content h3{font-size:18px}
      .summary-list li,
      .info-list li{
        flex-direction:column;
        align-items:flex-start;
      }
      .summary-list strong{ text-align:left; }
    }

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