:root{
  --bg:#090d13;
  --bg-2:#101820;
  --panel:rgba(16,24,32,.78);
  --ink:#e8eef3;
  --muted:#8b99a8;
  --line:rgba(232,238,243,.1);
  --accent:#2f8f82;
  --accent-2:#3aa394;
  --copper:#b08968;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%;}
body.landing{
  font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:
    radial-gradient(1200px 640px at 12% -10%, rgba(47,143,130,.16), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(176,137,104,.08), transparent 50%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  letter-spacing:.01em;
}
.grain{
  pointer-events:none;position:fixed;inset:0;z-index:0;opacity:.22;
  background-image:linear-gradient(rgba(232,238,243,.04) 1px, transparent 1px);
  background-size:100% 48px;
}
.nav,.hero,.caps,.path,.foot{position:relative;z-index:1}
.nav{
  display:flex;align-items:center;gap:14px;
  padding:18px 40px;
  border-bottom:1px solid var(--line);
}
.mark{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(160deg,#1d4e48,#2f8f82);
  color:#fff;font-weight:800;text-decoration:none;font-size:16px;
}
.nav-copy{flex:1;min-width:0}
.nav-copy strong{display:block;font-size:14px;font-weight:650}
.nav-copy span{font-size:11px;color:var(--muted)}
.gpu-badge{
  display:flex;gap:10px;flex-wrap:wrap;align-items:stretch;
  padding:8px 10px;border:1px solid var(--line);border-radius:12px;
  background:rgba(9,13,19,.55);
}
.gpu-badge .cell{min-width:92px}
.gpu-badge b{display:block;font-size:10px;font-weight:500;color:var(--muted);margin-bottom:2px}
.gpu-badge span{font-size:12px;line-height:1.3}
.gpu-badge.ok{border-color:rgba(47,143,130,.45)}
.gpu-badge.warn{border-color:rgba(212,160,23,.45)}
.nav-enter{
  text-decoration:none;color:#08110f;background:var(--accent);font-weight:650;
  font-size:13px;padding:10px 16px;border-radius:10px;white-space:nowrap;
}
.nav-enter:hover{background:var(--accent-2)}
.hero{
  max-width:1080px;margin:0 auto;padding:72px 40px 36px;
}
.eyebrow{
  font-size:12px;color:var(--copper);letter-spacing:.22em;text-transform:uppercase;
  margin-bottom:18px;
}
.hero h1{
  font-size:clamp(48px,8vw,84px);font-weight:620;letter-spacing:.16em;
  line-height:1.05;margin-bottom:18px;
}
.lede{
  max-width:640px;font-size:18px;line-height:1.7;color:#c5d0da;
  margin-bottom:32px;
}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.cta{
  display:inline-flex;align-items:center;justify-content:center;
  text-decoration:none;border-radius:12px;padding:12px 20px;font-size:14px;font-weight:650;
}
.cta.primary{background:var(--accent);color:#08110f}
.cta.primary:hover{background:var(--accent-2)}
.cta.ghost{
  color:var(--ink);border:1px solid var(--line);background:transparent;
}
.cta.ghost:hover{border-color:rgba(47,143,130,.5)}
.hero-note{font-size:12px;color:var(--muted);line-height:1.6}
.caps{
  max-width:1080px;margin:0 auto;padding:12px 40px 28px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
}
.cap{
  background:var(--panel);border:1px solid var(--line);border-radius:16px;
  padding:22px 22px 20px;min-height:168px;
  backdrop-filter:blur(8px);
}
.cap .idx{font-size:11px;color:var(--copper);letter-spacing:.16em;margin-bottom:10px}
.cap h2{font-size:18px;font-weight:650;margin-bottom:10px}
.cap p{font-size:13px;line-height:1.65;color:var(--muted)}
.path{
  max-width:1080px;margin:8px auto 28px;
  border:1px solid var(--line);border-radius:16px;
  background:rgba(16,24,32,.5);
  padding:20px 24px;
}
.path b{display:block;font-size:13px;margin-bottom:8px}
.path span{font-size:13px;color:var(--muted);line-height:1.65}
.foot{
  max-width:1080px;margin:0 auto;padding:28px 40px 48px;
  border-top:1px solid var(--line);
  font-size:12px;line-height:1.7;color:var(--muted);
}
.foot strong{color:#c5d0da;font-weight:600}
@media(max-width:900px){
  .nav{padding:14px 20px;flex-wrap:wrap}
  .hero,.caps,.foot{padding-left:20px;padding-right:20px}
  .path{margin-left:20px;margin-right:20px}
  .hero{padding-top:40px}
  .caps{grid-template-columns:1fr}
}