:root{--blue:#1e3a8a;--accent:#2563eb;--ink:#0f172a;--muted:#475569;--line:#e5e7eb;--bg:#fff;--card:#fff;--code:#f1f5f9}@media (prefers-color-scheme:dark){:root{--ink:#e8edf5;--muted:#94a3b8;--line:#1e293b;--bg:#0b1120;--card:#0f172a;--code:#1e293b;--accent:#60a5fa}}*{box-sizing:border-box}body{margin:0;font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}.wrap{max-width:720px;margin:0 auto;padding:56px 24px 96px}header{display:flex;align-items:center;gap:11px;padding-bottom:22px;margin-bottom:34px;border-bottom:1px solid var(--line)}.mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--blue),var(--accent));color:#fff;display:grid;place-items:center;font-weight:800;font-size:14px;letter-spacing:-.02em}.brand{font-weight:800;font-size:20px;letter-spacing:-.02em;color:var(--ink)}.brand .accent{color:var(--accent)}h1{font-size:clamp(28px,5vw,38px);line-height:1.15;letter-spacing:-.03em;margin:16px 0 10px;font-weight:800}.lede{font-size:19px;color:var(--muted);margin:0 0 28px;max-width:60ch}h2{font-size:18px;font-weight:700;margin:36px 0 10px;letter-spacing:-.01em}p{margin:0 0 14px}ul{padding-left:22px;margin:0 0 14px}li{margin:8px 0}code{background:var(--code);padding:2px 7px;border-radius:6px;font-size:13.5px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.cta{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;text-decoration:none;font-weight:700;padding:13px 24px;border-radius:11px;margin:6px 0 8px;box-shadow:0 2px 8px rgba(37,99,235,.25)}.cta:hover{filter:brightness(1.06)}.card{border:1px solid var(--line);border-radius:14px;padding:20px 24px;margin:22px 0;background:var(--card)}footer{border-top:1px solid var(--line);margin-top:52px;padding-top:22px;color:var(--muted);font-size:14px;line-height:1.7}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}