:root{
  --bg:#f7f8f6; --surface:#ffffff; --ink:#15201c; --muted:#5b6762; --line:#dfe4e0;
  --accent:#0f7a5c; --accent-ink:#ffffff; --flow:#2f6fd6; --gate:#c2410c;
  --radius:14px; --wrap:1080px;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0f1513;--surface:#161e1b;--ink:#e6ece9;--muted:#9aa7a1;--line:#26312d;--accent:#3cc497;--accent-ink:#06130e;--flow:#6ea0ff;--gate:#fb8a4f}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}

.site-header{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.mark{width:22px;height:22px;border-radius:6px;background:conic-gradient(from 210deg,var(--accent),var(--flow),var(--gate),var(--accent))}
.nav nav{display:flex;gap:22px}
.nav nav a{color:var(--muted);text-decoration:none;font-size:15px}
.nav nav a:hover{color:var(--ink)}

.hero{padding:72px 20px 40px}
.eyebrow{font:600 13px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--accent);margin:0 0 16px}
h1{font-size:clamp(34px,6vw,58px);line-height:1.05;letter-spacing:-.03em;margin:0 0 18px}
.lede{font-size:clamp(17px,2vw,19px);color:var(--muted);max-width:620px;margin:0}
.trust{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:40px}
.trust div{border-left:3px solid var(--accent);padding:4px 0 4px 14px}
.trust strong{display:block;font-size:15px}
.trust span{color:var(--muted);font-size:14px}

.section-title{font-size:13px;font-family:var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:600;margin:48px 0 16px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-2px);box-shadow:0 10px 30px -18px rgba(0,0,0,.35)}
.card h3{margin:14px 0 6px;font-size:21px;letter-spacing:-.01em}
.card p{margin:0 0 14px;color:var(--muted);font-size:15px}
.card.soon{border-style:dashed;background:transparent}
.card.soon h3{margin-top:0}
.card-icon{width:48px;height:48px;border-radius:12px;display:grid;place-items:center}
.card-icon svg{width:34px;height:34px}
.card-icon.flow{color:var(--flow);background:color-mix(in srgb,var(--flow) 12%,transparent)}
.card-icon.gateway{color:var(--gate);background:color-mix(in srgb,var(--gate) 12%,transparent)}
.card-icon.qibc{color:#7c3aed;background:color-mix(in srgb,#7c3aed 12%,transparent)}
.card-icon.volcano{color:#db2777;background:color-mix(in srgb,#db2777 12%,transparent)}
.card-icon.orfeome{color:#0e7490;background:color-mix(in srgb,#0e7490 12%,transparent)}
.tags{list-style:none;padding:0;margin:0 0 20px;display:flex;flex-wrap:wrap;gap:6px}
.tags li{font:12px/1 var(--mono);padding:6px 8px;border-radius:6px;background:var(--bg);border:1px solid var(--line);color:var(--muted)}
.actions{margin-top:auto;display:flex;gap:10px}
.btn{display:inline-block;padding:10px 16px;border-radius:9px;border:1px solid var(--line);color:var(--ink);text-decoration:none;font-weight:600;font-size:14px}
.btn:hover{border-color:var(--ink)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{filter:brightness(1.08)}

.ad-slot{margin-top:40px;min-height:100px}
.cite p{color:var(--muted);max-width:640px}

.prose{max-width:720px;padding:56px 20px 40px}
.prose h1{font-size:clamp(30px,5vw,44px)}
.prose h2{font-size:20px;margin-top:36px}
.prose p,.prose li{color:var(--muted)}

.site-footer{margin-top:72px;border-top:1px solid var(--line)}
.foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:24px 20px;color:var(--muted);font-size:14px}
.foot nav{display:flex;gap:18px}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--ink)}
@media (max-width:520px){.nav nav{gap:14px}.hero{padding-top:48px}}