:root{--bg:#f6f7fb;--card:#fff;--text:#16202e;--muted:#566377;--line:#e2e6ee;--brand:#1f3a8a;--on-brand:#fff;--accent:#0f766e}
@media (prefers-color-scheme:dark){:root{--bg:#0e1420;--card:#161e2e;--text:#e8edf5;--muted:#9aa7ba;--line:#263047;--brand:#8ab0ff;--on-brand:#0e1420;--accent:#5eead4}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--brand)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:var(--card);padding:8px 12px;z-index:9}
header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;flex-wrap:wrap}
.logo{font-weight:700;font-size:1.15rem;color:var(--text);text-decoration:none}
.logo span{color:var(--accent)}
nav a{margin-left:18px;color:var(--muted);text-decoration:none;font-weight:500}
nav a:hover,nav a[aria-current]{color:var(--brand)}
.hero{padding:56px 0 40px}
.hero h1{font-size:clamp(1.9rem,4.5vw,2.8rem);line-height:1.15;margin:0 0 14px;max-width:18ch}
.hero p{color:var(--muted);max-width:60ch;margin:0 0 22px;font-size:1.08rem}
.btn{display:inline-block;background:var(--brand);color:var(--on-brand);padding:11px 20px;border-radius:10px;text-decoration:none;font-weight:600}
.btn:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
h2{font-size:1.5rem;margin:0 0 6px}
.sub{color:var(--muted);margin:0 0 20px}
section{padding:28px 0}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(270px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px}
.card h3{margin:0 0 10px;font-size:1.05rem}
.card dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:4px 12px;font-size:.95rem}
.card dt{color:var(--muted)}.card dd{margin:0;word-break:break-word}
.note{font-size:.9rem;color:var(--muted)}
.steps{counter-reset:s;padding:0;list-style:none}
.steps li{counter-increment:s;position:relative;padding-left:44px;margin-bottom:16px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--brand);color:var(--on-brand);display:grid;place-items:center;font-weight:700}
.page{padding:40px 0;max-width:760px}.page h1{margin-top:0}
footer{border-top:1px solid var(--line);background:var(--card);margin-top:32px;padding:28px 0;font-size:.92rem;color:var(--muted)}
footer .wrap{display:grid;gap:10px}footer a{margin-right:16px}