:root{color-scheme:light;--ink:#14252b;--muted:#52636a;--accent:#075f64;--line:#dce5e6;--paper:#f5f8f7}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}header,main,footer{max-width:860px;margin:auto;padding:24px}header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:23px;font-weight:700;text-decoration:none;color:var(--ink)}.brand img{width:42px;height:42px}nav{display:flex;gap:18px;flex-wrap:wrap}a{color:var(--accent);text-underline-offset:3px}h1{font-size:clamp(30px,6vw,48px);line-height:1.15;letter-spacing:-.03em;margin:26px 0 14px}h2{font-size:23px;margin:34px 0 10px;line-height:1.3}p{margin:12px 0}.lead{font-size:20px;color:var(--muted)}.meta{color:var(--muted);font-size:14px}.notice{padding:18px 20px;border-left:4px solid var(--accent);background:#e8f1ef;border-radius:0 8px 8px 0}.cards{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0}.card{padding:20px;background:white;border:1px solid var(--line);border-radius:12px}.card h2{margin-top:0}li{margin:8px 0}code{font-size:.88em;overflow-wrap:anywhere}footer{border-top:1px solid var(--line);font-size:14px;color:var(--muted)}@media(max-width:600px){header{align-items:flex-start;gap:16px;flex-direction:column}.cards{grid-template-columns:1fr}main{padding:18px}}