:root{--bg:#fbfcfe;--card:#fff;--ink:#1b2340;--muted:#5d6785;--line:#dfe4ef;--pen:#0f766e;--soft:#d5f3ec}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--pen)}
.wrap{max-width:860px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}
.top{background:var(--pen);padding-block:14px}
.top a{color:#fff;text-decoration:none}
.row{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.brand{font-weight:800;font-size:20px}
nav{display:flex;gap:16px;font-size:14px}
.hero{padding-block:48px 24px}
.hero h1{font-size:clamp(28px,6vw,44px);line-height:1.15;margin:0 0 12px;text-wrap:balance}
.lead{font-size:18px;color:var(--muted);max-width:60ch}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}
.card h2{font-size:17px;margin:0 0 6px}
.card p{margin:0;color:var(--muted)}
.note{margin-block:28px;background:var(--soft);border-radius:14px;padding:20px}
.note h2{margin:0 0 6px;font-size:19px}
.doc{padding-block:32px;max-width:72ch}
.doc h1{font-size:30px;margin:0 0 4px}
.doc h2{font-size:19px;margin:28px 0 6px}
.muted{color:var(--muted)}
code{background:var(--soft);padding:1px 6px;border-radius:6px}
.foot{padding-block:28px;color:var(--muted);font-size:14px;border-top:1px solid var(--line);margin-top:24px}