:root{--bg:#fafaf7;--fg:#1d2327;--muted:#5d676d;--line:#e4e4dd;--accent:#2f6f5e;--card:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#14181a;--fg:#e8ebec;--muted:#9aa5aa;--line:#2a3236;--accent:#6cc2a8;--card:#1b2124}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:700;letter-spacing:.2px;color:var(--fg);display:flex;align-items:center;gap:10px}
.logo img{width:26px;height:26px}
nav a{margin-left:22px;color:var(--muted);font-size:15px}
nav a.on,nav a:hover{color:var(--fg);text-decoration:none}
.hero{padding:84px 0 64px}
.hero h1{font-size:clamp(32px,6vw,52px);line-height:1.15;margin:0 0 18px;letter-spacing:-.5px}
.hero p{font-size:19px;color:var(--muted);max-width:620px;margin:0 0 28px}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:11px 22px;border-radius:8px;font-weight:600}
.btn:hover{text-decoration:none;opacity:.92}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin:8px 0 64px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px}
.card h3{margin:0 0 8px;font-size:18px}.card p{margin:0;color:var(--muted);font-size:15px}
h2{font-size:26px;margin:48px 0 14px}
main.page{padding:48px 0 64px}main.page h1{font-size:36px;margin:0 0 10px}
.lead{color:var(--muted);font-size:18px;max-width:640px}
ul.clean{padding-left:20px;color:var(--muted)}ul.clean li{margin:6px 0}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:28px}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:14px;padding:26px 0}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}