:root {
  --bg:#0b0d10;
  --panel:#11151a;
  --text:#f3f5f7;
  --muted:#a7afb9;
  --line:#252b33;
  --accent:#87f0c5;
  --max:1180px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,sans-serif;line-height:1.6}.site-header{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;max-width:var(--max);margin:auto;padding:20px 28px;background:rgba(11,13,16,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.05)}.brand{font-weight:700;color:#fff;text-decoration:none;letter-spacing:-.03em}.brand span{color:var(--accent)}nav{display:flex;gap:24px}nav a{color:var(--muted);text-decoration:none;font-size:14px}nav a:hover{color:#fff}.section{max-width:var(--max);margin:auto;padding:110px 28px;border-bottom:1px solid var(--line)}.hero{padding-top:140px;padding-bottom:140px}.eyebrow{font-family:"IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.12em;font-size:12px;color:var(--accent);margin-bottom:22px}h1{font-size:clamp(48px,8vw,96px);line-height:.98;letter-spacing:-.06em;max-width:1000px;margin:0 0 34px}h2{font-size:clamp(34px,5vw,58px);line-height:1.05;letter-spacing:-.045em;margin:0 0 26px;max-width:850px}h3{font-size:20px;line-height:1.25;margin:10px 0 12px}.lead{max-width:820px;font-size:21px;color:#c9cfd6}.hero-actions{display:flex;gap:12px;margin:38px 0 28px;flex-wrap:wrap}.button{display:inline-block;padding:12px 17px;border-radius:8px;text-decoration:none;font-weight:600;font-size:14px}.primary{background:var(--accent);color:#07110d}.secondary{border:1px solid var(--line);color:#fff}.note,.section-intro,.prose p,.card p,.principles-grid p,.roadmap p,.closing p{color:var(--muted)}.note{font-size:13px;max-width:650px}.split{display:grid;grid-template-columns:1fr 1fr;gap:80px}.prose{font-size:18px}.loop{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:48px}.card,.principles-grid article,.roadmap>div{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:24px}.num,.roadmap span{font-family:"IBM Plex Mono",monospace;color:var(--accent);font-size:12px}.principles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:44px}.artifact{display:grid;grid-template-columns:1fr 1fr;gap:70px}.metric-list{display:grid;gap:0}.metric-list div{padding:20px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:180px 1fr;gap:20px}.metric-list span{color:var(--muted)}.roadmap{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:42px}.roadmap strong{display:block;margin:8px 0}.closing{text-align:center}.closing h2,.closing p{margin-left:auto;margin-right:auto}.closing p{max-width:700px}footer{max-width:var(--max);margin:auto;padding:30px 28px 50px;display:flex;justify-content:space-between;color:#727b86;font-size:13px}@media(max-width:900px){nav{display:none}.split,.artifact{grid-template-columns:1fr;gap:28px}.loop{grid-template-columns:1fr 1fr}.principles-grid,.roadmap{grid-template-columns:1fr 1fr}.section{padding-top:80px;padding-bottom:80px}}@media(max-width:620px){.loop,.principles-grid,.roadmap{grid-template-columns:1fr}.metric-list div{grid-template-columns:1fr;gap:6px}.hero{padding-top:90px}footer{flex-direction:column;gap:8px}}