:root{--bg:#fff;--fg:#14161a;--muted:#5b6370;--card:#f4f6fa;--line:#e1e5ec;--accent:#5b3df5;--accent-fg:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#0f1115;--fg:#eceef2;--muted:#9aa3b2;--card:#181b22;--line:#2a2f3a;--accent:#8b78ff;--accent-fg:#0f1115}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}
.doc{max-width:760px;padding-top:32px;padding-bottom:48px}
a{color:var(--accent)}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:8px;background:var(--bg);padding:8px;z-index:9}
header.site{border-bottom:1px solid var(--line)}
.bar{display:flex;justify-content:space-between;align-items:center;min-height:60px;gap:12px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--fg);text-decoration:none}
nav a{margin-left:16px;text-decoration:none;color:var(--fg)}
.btn{display:inline-block;background:var(--accent);color:var(--accent-fg);padding:12px 24px;border-radius:10px;font-weight:600;text-decoration:none}
nav a.btn{color:var(--accent-fg)}
.btn.small{padding:6px 14px}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}
a:focus-visible,.btn:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.hero{padding:64px 0 40px;text-align:center}
.hero h1{font-size:clamp(2rem,6vw,3.2rem);line-height:1.15;margin:0 0 16px}
.lead{font-size:1.2rem;color:var(--muted);max-width:640px;margin:0 auto 24px}
h2{margin-top:2rem}.center{text-align:center}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}
.card h3{margin-top:0}
.steps{max-width:560px;margin:0 auto;padding-left:24px}
section.wrap{padding-bottom:32px}
.muted{color:var(--muted);font-size:.9rem}
footer.site{border-top:1px solid var(--line);margin-top:48px;padding:24px 0;font-size:.9rem}
footer nav a{margin:0 16px 0 0;display:inline-block}