:root{--bg:#f6f6f4;--fg:#1c1c1e;--muted:#6b6b70;--card:#fff;--line:#e4e4e0;--acc:#222}
@media (prefers-color-scheme:dark){:root{--bg:#141416;--fg:#ececee;--muted:#9a9aa2;--card:#1d1d20;--line:#2c2c30;--acc:#ececee}}
*{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:1040px;margin:0 auto;padding:0 20px}
.top{border-bottom:1px solid var(--line);background:var(--bg)}
.bar{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:700;color:var(--fg);text-decoration:none;letter-spacing:.2px}
.logo span{font-weight:400;opacity:.65}
nav a{color:var(--muted);text-decoration:none;margin-left:22px;font-size:15px}
nav a:hover{color:var(--fg)}
.hero{padding:64px 0 36px}
h1{font-size:clamp(28px,5vw,44px);line-height:1.15;margin:0 0 16px;font-weight:700}
.hero p{max-width:640px;margin:0 0 10px}
.muted{color:var(--muted);font-size:14px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;padding-bottom:36px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}
.card h2{font-size:18px;margin:0 0 8px}
.card p{margin:0;color:var(--muted);font-size:15px}
.block{padding:20px 20px 10px}
.block h2{font-size:22px;margin:0 0 8px}
.block p{max-width:700px;color:var(--muted);margin:0 0 12px}
.foot{border-top:1px solid var(--line);margin-top:36px;padding:22px 0;color:var(--muted);font-size:14px}