:root{--bg:#fff;--fg:#14161a;--muted:#5b6270;--line:#e6e8ec;--accent:#2f6bff;--card:#f6f7f9}
@media(prefers-color-scheme:dark){:root{--bg:#0e1013;--fg:#eceef2;--muted:#9aa1ad;--line:#23272e;--accent:#6c97ff;--card:#161a20}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent)}
.wrap{max-width:720px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--line)}
header .wrap{display:flex;justify-content:space-between;align-items:center;height:60px;flex-wrap:wrap}
header a.brand{color:var(--fg);font-weight:700;text-decoration:none}
nav a{margin-left:18px;color:var(--muted);text-decoration:none;font-size:15px}
nav a:hover{color:var(--fg)}
main{padding:48px 0 64px}
h1{font-size:2.2rem;line-height:1.2;margin:0 0 12px}
h2{margin:36px 0 8px;font-size:1.25rem}
.lead{color:var(--muted);font-size:1.15rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;display:flex;gap:16px;align-items:center;margin-top:28px}
.card img{width:64px;height:64px;border-radius:14px}
.card h3{margin:0}
.card p{margin:2px 0 0;color:var(--muted)}
ul{padding-left:22px}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:14px;padding:24px 0}
footer a{color:var(--muted)}