:root{color-scheme:light dark;--bg:#f4f4f0;--surface:#fcfcf9;--text:#27342f;--muted:#626e69;--line:#dce3dd;--accent:#376c60;--soft:#dce9e1}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:var(--accent);text-underline-offset:4px}a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:5px}header,main,footer{max-width:1080px;margin:auto;padding:24px}header{display:flex;align-items:center;gap:24px;flex-wrap:wrap;border-bottom:1px solid var(--line)}.brand{display:flex;gap:10px;align-items:center;font-weight:650;text-decoration:none;color:var(--text);white-space:nowrap}.brand svg{width:34px;height:34px}nav{display:flex;flex:1;gap:22px;flex-wrap:wrap;font-size:14px}nav a{color:var(--muted);text-decoration:none}nav a[aria-current=page]{color:var(--accent);text-decoration:underline}.language{font-size:14px}.draft{padding:10px 24px;background:var(--soft);text-align:center;font-size:14px}.eyebrow{font-size:13px;color:var(--muted);margin:0}h1{font-size:clamp(30px,5vw,48px);line-height:1.3;letter-spacing:-.025em;margin:18px 0}h2{font-size:22px;line-height:1.5;margin:0 0 12px}h3{font-size:18px;margin:0 0 8px}p{margin:0 0 16px}.lead{font-size:19px;max-width:700px;color:var(--muted)}.hero{padding:48px 0 36px}.links{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.button{display:inline-block;border-radius:8px;padding:9px 18px;text-decoration:none;background:var(--accent);color:var(--surface)}.button.secondary{background:var(--soft);color:var(--accent)}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:28px 0}.card{padding:24px;background:var(--surface);border-radius:12px}.card p:last-child{margin-bottom:0}.meta{color:var(--muted);font-size:14px}.article{max-width:780px;margin:36px auto 60px}.article section{margin:32px 0;padding-bottom:20px;border-bottom:1px solid var(--line)}.article li{margin:10px 0}.toc{display:flex;gap:16px;flex-wrap:wrap;font-size:14px;margin:28px 0}.notice{padding:18px 22px;background:var(--soft);border-radius:8px}.diagram{display:flex;gap:14px;flex-wrap:wrap;align-items:stretch;margin:28px 0}.node{flex:1;min-width:180px;padding:24px;background:var(--surface);border-radius:12px}.node small{display:block;color:var(--muted)}footer{border-top:1px solid var(--line);color:var(--muted);font-size:13px;padding-bottom:44px}.footer-links{display:flex;flex-wrap:wrap;gap:18px;margin:12px 0}.skip{position:absolute;left:12px;top:-100px;background:var(--surface);padding:8px}.skip:focus{top:12px}table{border-collapse:collapse;width:100%;font-size:14px}td,th{border-bottom:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}code{overflow-wrap:anywhere}main{min-height:60vh}@media(prefers-color-scheme:dark){:root{--bg:#171d1b;--surface:#222a27;--text:#e5ece7;--muted:#a7b5ad;--line:#35423c;--accent:#a4cbb7;--soft:#30463c}.button{color:#171d1b}}@media(max-width:640px){header,main,footer{padding:18px}header{gap:14px}nav{order:3;flex-basis:100%;gap:16px}.language{margin-left:auto}.hero{padding-top:28px}.grid{grid-template-columns:1fr}.card{padding:20px}.article{margin:24px auto}.lead{font-size:17px}.diagram{gap:10px}h2{font-size:20px}}