/* roulang page: index */
:root{
  --paper:#070a17;
  --ink:#eef1ff;
  --mute:#98a1c4;
  --brand:#7c5cff;
  --accent:#2fd6c4;
  --edge:rgba(255,255,255,.11);
  --rad:16px;
  --lift:0 18px 42px rgba(4,7,20,.55);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
h1,h2,h3,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
section[id]{scroll-margin-top:84px}
.ultde-wrap{max-width:1180px;margin:0 auto;padding:0 20px}

.ultde-top{position:sticky;top:0;z-index:30;background:rgba(7,10,23,.84);backdrop-filter:blur(14px);border-bottom:1px solid var(--edge)}
.ultde-topbar{display:flex;align-items:center;gap:24px;min-height:66px}
.ultde-logo{display:flex;align-items:center;gap:10px;font-weight:700}
.ultde-mark{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--accent));color:#05060f;font-size:17px;font-weight:800}
.ultde-name{font-size:18px;letter-spacing:.02em}
.ultde-nav{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.ultde-nav a{padding:9px 13px;border-radius:999px;font-size:15px;color:var(--mute);min-height:44px;display:inline-flex;align-items:center;transition:color .2s,background .2s}
.ultde-nav a:hover,.ultde-nav a:focus-visible{color:var(--ink);background:rgba(124,92,255,.18)}

.ultde-hero{position:relative;padding:76px 0 64px;overflow:hidden;background-color:#0a0f24;background-size:cover;background-position:center}
.ultde-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(4,6,18,.95) 0%,rgba(6,9,26,.82) 58%,rgba(6,9,26,.55) 100%)}
.ultde-hero-inner{position:relative;max-width:1180px;margin:0 auto;padding:0 20px}
.ultde-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid rgba(47,214,196,.36);background:rgba(47,214,196,.1);color:#bff3ec;font-size:13px;letter-spacing:.04em}
.ultde-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent)}
.ultde-h1{font-size:42px;line-height:1.22;font-weight:800;letter-spacing:.01em;margin-top:16px;max-width:760px}
.ultde-h1 span{background:linear-gradient(100deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.ultde-sub{font-size:18px;color:#cbd3f4;margin-top:12px;font-weight:500}
.ultde-desc{font-size:16px;color:var(--mute);max-width:700px;margin-top:16px;margin-bottom:28px}
.ultde-actions{display:flex;flex-wrap:wrap;gap:14px}
.ultde-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;background:linear-gradient(100deg,var(--brand),#4b7bff);color:#fff;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s}
.ultde-btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(124,92,255,.38)}
.ultde-btn-ghost{background:rgba(255,255,255,.05);border-color:var(--edge);color:var(--ink)}
.ultde-btn-ghost:hover{background:rgba(255,255,255,.1);box-shadow:none}
.ultde-checks{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.ultde-checks li{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--edge);font-size:14px;color:#cdd4f2}
.ultde-checks li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);flex:0 0 auto}

.ultde-sec{padding:66px 0}
.ultde-sec-alt{background:#080c1d}
.ultde-sec-head{margin-bottom:28px;max-width:720px}
.ultde-sec-title{font-size:26px;line-height:1.3;font-weight:800;letter-spacing:.01em}
.ultde-sec-title::after{content:"";display:block;width:44px;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--accent));margin-top:12px}
.ultde-sec-sub{color:var(--mute);margin-top:14px;font-size:15px}

.ultde-claim-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:26px}
.ultde-claim{padding:24px 22px;border-radius:var(--rad);border:1px solid var(--edge);background:rgba(255,255,255,.04);transition:transform .25s,border-color .25s}
.ultde-claim:hover{transform:translateY(-4px);border-color:rgba(124,92,255,.5)}
.ultde-claim h3{font-size:17px;margin-bottom:8px}
.ultde-claim p{font-size:15px;color:var(--mute)}

.ultde-audit{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;counter-reset:aud}
.ultde-audit li{position:relative;padding:20px 20px 20px 60px;border-radius:var(--rad);background:rgba(255,255,255,.04);border:1px solid var(--edge);font-size:15px;color:#d3daf6}
.ultde-audit li::before{counter-increment:aud;content:counter(aud,decimal-leading-zero);position:absolute;left:20px;top:19px;font-weight:800;font-size:15px;color:var(--accent);letter-spacing:.04em}

.ultde-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(178px,1fr));gap:18px}
.ultde-card{background:rgba(255,255,255,.04);border:1px solid var(--edge);border-radius:var(--rad);overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
.ultde-card:hover{transform:translateY(-4px);box-shadow:var(--lift);border-color:rgba(124,92,255,.5)}
.ultde-thumb{position:relative;aspect-ratio:3/4;overflow:hidden;background:#111735}
.ultde-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.ultde-card:hover .ultde-thumb img{transform:scale(1.04)}
.ultde-badge{position:absolute;left:10px;top:10px;padding:3px 9px;border-radius:999px;font-size:12px;background:rgba(6,9,26,.8);color:var(--accent);border:1px solid rgba(47,214,196,.4)}
.ultde-score{position:absolute;right:10px;bottom:10px;padding:2px 9px;border-radius:8px;background:rgba(6,9,26,.84);color:#ffd166;font-size:13px;font-weight:700}
.ultde-card-body{padding:12px 14px 16px}
.ultde-card-title{font-size:16px;font-weight:600;line-height:1.4}
.ultde-card-meta{font-size:13px;color:var(--mute);margin-top:3px}

.ultde-badges{display:flex;flex-wrap:wrap;gap:12px}
.ultde-chip{display:inline-flex;align-items:center;gap:9px;padding:12px 20px;border-radius:12px;border:1px solid rgba(47,214,196,.32);background:rgba(47,214,196,.08);font-size:15px;color:#c9f5ef}
.ultde-chip::before{content:"✓";font-size:13px;color:var(--accent)}

.ultde-tags{display:flex;flex-wrap:wrap;gap:10px}
.ultde-tagitem{padding:9px 18px;border-radius:999px;border:1px solid var(--edge);background:rgba(255,255,255,.04);font-size:14px;color:#c3ccf0}

.ultde-rank{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 20px;counter-reset:rk}
.ultde-rank li{counter-increment:rk;display:flex;align-items:center;gap:14px;padding:13px 16px;border-radius:12px;background:rgba(255,255,255,.035);border:1px solid var(--edge)}
.ultde-rank li::before{content:counter(rk);flex:0 0 26px;text-align:center;font-weight:800;font-size:17px;color:var(--mute)}
.ultde-rank li:nth-child(-n+3)::before{color:var(--accent)}
.ultde-rank-name{font-weight:600;font-size:15px}
.ultde-rank-cat{font-size:13px;color:var(--mute);border:1px solid var(--edge);padding:1px 8px;border-radius:999px}
.ultde-rank-score{margin-left:auto;color:#ffd166;font-weight:700;font-size:15px}

.ultde-picks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.ultde-pick{padding:20px 22px;border-radius:var(--rad);border:1px solid var(--edge);background:linear-gradient(150deg,rgba(124,92,255,.16),rgba(255,255,255,.025))}
.ultde-pick-top{display:flex;align-items:baseline;gap:12px}
.ultde-pick-name{font-size:17px;font-weight:700}
.ultde-pick-score{color:#ffd166;font-weight:800;font-size:15px}
.ultde-pick-note{color:var(--mute);font-size:15px;margin-top:8px}

.ultde-note{font-size:16px;color:#c3cced;max-width:820px}
.ultde-note strong{color:var(--ink)}

.ultde-news{display:grid;gap:12px}
.ultde-news-row{display:grid;grid-template-columns:92px 1fr;gap:16px;padding:16px 18px;border-radius:12px;border:1px solid var(--edge);background:rgba(255,255,255,.03);align-items:start}
.ultde-news-time{font-size:13px;color:var(--accent);padding-top:3px}
.ultde-news-title{font-size:16px;font-weight:600}
.ultde-news-desc{font-size:14px;color:var(--mute);margin-top:4px}

.ultde-voices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.ultde-voice{padding:22px;border-radius:var(--rad);border:1px solid var(--edge);background:rgba(255,255,255,.04)}
.ultde-voice p{font-size:15px;color:#d3d9f5}
.ultde-voice span{display:block;margin-top:14px;font-size:13px;color:var(--mute)}

.ultde-faq{display:grid;gap:12px;max-width:900px}
.ultde-faq-item{border:1px solid var(--edge);border-radius:14px;padding:18px 20px;background:rgba(255,255,255,.03)}
.ultde-faq-item h3{font-size:16px;margin-bottom:6px;font-weight:600}
.ultde-faq-item p{color:var(--mute);font-size:15px}

.ultde-foot{border-top:1px solid var(--edge);background:#05070f;padding:56px 0 28px}
.ultde-foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.ultde-foot-brand{font-size:18px;font-weight:700;margin-bottom:10px}
.ultde-foot-note{font-size:14px;color:var(--mute);max-width:300px}
.ultde-foot-title{font-size:14px;font-weight:700;color:#c9d1f2;margin-bottom:12px;letter-spacing:.04em}
.ultde-foot-list{display:grid;gap:4px;font-size:14px;color:var(--mute)}
.ultde-foot-list a{display:inline-flex;align-items:center;min-height:40px;transition:color .2s}
.ultde-foot-list a:hover{color:var(--ink)}
.ultde-copy{margin-top:36px;padding-top:20px;border-top:1px solid var(--edge);font-size:13px;color:#6f78a0;text-align:center}

@media (max-width:1024px){
  .ultde-hero{padding:60px 0 52px}
  .ultde-h1{font-size:36px}
  .ultde-claim-grid,.ultde-audit{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ultde-voices{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ultde-picks{grid-template-columns:1fr}
  .ultde-foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .ultde-topbar{flex-wrap:wrap;gap:8px;padding:10px 0;min-height:0}
  .ultde-nav{margin-left:0;width:100%;flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
  .ultde-nav::-webkit-scrollbar{display:none}
  .ultde-nav a{white-space:nowrap;font-size:14px;padding:8px 11px}
  .ultde-h1{font-size:30px}
  .ultde-sub{font-size:16px}
  .ultde-sec{padding:46px 0}
  .ultde-sec-title{font-size:22px}
  .ultde-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .ultde-rank{grid-template-columns:1fr}
  .ultde-voices{grid-template-columns:1fr}
  .ultde-audit{grid-template-columns:1fr}
}
@media (max-width:520px){
  .ultde-wrap,.ultde-hero-inner{padding:0 16px}
  .ultde-h1{font-size:25px}
  .ultde-desc{font-size:15px}
  .ultde-actions{gap:10px}
  .ultde-btn{width:100%;padding:0 18px}
  .ultde-claim-grid{grid-template-columns:1fr}
  .ultde-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .ultde-card-body{padding:10px 11px 13px}
  .ultde-card-title{font-size:14px}
  .ultde-card-meta{font-size:12px}
  .ultde-news-row{grid-template-columns:1fr;gap:6px}
  .ultde-foot-grid{grid-template-columns:1fr}
  .ultde-copy{font-size:12px}
}