:root{--bg:#fafaf7;--fg:#16181d;--muted:#5b6070;--line:#e3e3dc;--accent:#2952e3;--card:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#121317;--fg:#ecedf0;--muted:#a0a4b0;--line:#2a2c33;--accent:#7d9bff;--card:#1a1c21}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
header{padding:28px 0;display:flex;justify-content:space-between;align-items:center}
.logo{font-weight:800;letter-spacing:.02em;font-size:1.25rem;color:var(--fg);text-decoration:none}
nav a{color:var(--muted);text-decoration:none;margin-left:18px;font-size:.95rem}
.hero{padding:56px 0 40px}
h1{font-size:clamp(2rem,5vw,3rem);line-height:1.15;margin:0 0 16px}
.lead{font-size:1.15rem;color:var(--muted);max-width:620px}
.btn{display:inline-block;margin-top:22px;background:var(--accent);color:#fff;padding:12px 22px;border-radius:8px;text-decoration:none;font-weight:600}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin:24px 0 48px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px}
.card h3{margin:0 0 8px;font-size:1.1rem}
.card p{margin:0;color:var(--muted);font-size:.97rem}
.note{border-left:3px solid var(--accent);padding:4px 0 4px 16px;color:var(--muted);margin:0 0 48px}
footer{border-top:1px solid var(--line);padding:24px 0 40px;color:var(--muted);font-size:.9rem}
footer a{color:var(--muted);margin-right:16px}
main.text{padding:24px 0 48px}
main.text h1{font-size:2rem}