:root{--bg:#EAF0F1;--surface:#fff;--text:#1F2D30;--muted:#5A6B6E;--line:#DCE5E6;--accent:#176775;--on-accent:#fff;--tint:#E3EFF0}
@media (prefers-color-scheme:dark){:root{--bg:#0F1A1C;--surface:#172427;--text:#E6EEEF;--muted:#9FB1B4;--line:#26373A;--accent:#5FB3C1;--on-accent:#0F1A1C;--tint:#1B2C30}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--accent)}
.wrap{max-width:880px;margin:0 auto;padding:0 16px}
header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 0}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:800;font-size:20px}
.brand img{width:36px;height:36px;border-radius:9px}
.langs a{margin-left:12px;font-size:14px;text-decoration:none;color:var(--muted)}
.langs a.on{color:var(--text);font-weight:700}
nav.pages{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:14px;padding:0 0 8px}
nav.pages a{color:var(--muted);text-decoration:none}
nav.pages a.on{color:var(--text);font-weight:700}
main{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:28px 24px;margin:8px 0 24px}
h1{font-size:clamp(28px,5vw,40px);line-height:1.15;margin:0 0 12px}
h2{font-size:20px;margin:28px 0 8px}
h3{font-size:16px;margin:20px 0 4px}
.lead{font-size:18px;color:var(--muted)}
.meta{color:var(--muted);font-size:14px}
.hero{padding:8px 0 12px}
.cta{display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px;margin-top:20px}
.btn{display:inline-block;background:var(--accent);color:var(--on-accent);text-decoration:none;font-weight:700;padding:12px 20px;border-radius:12px}
.note{color:var(--muted);font-size:14px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:12px;margin-top:24px}
.card{background:var(--tint);border-radius:14px;padding:16px}
.card h2{font-size:17px;margin:0 0 6px}
.card p{margin:0;color:var(--muted)}
.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin-top:12px}
ul,ol{padding-left:22px}
footer{color:var(--muted);font-size:13px;padding:0 0 32px}
footer a{color:var(--muted)}