:root{--bg:#fbfaf7;--ink:#16151a;--muted:#5d5b66;--line:#e7e4dd;--accent:#4338ca;--card:#ffffff}
@media (prefers-color-scheme:dark){:root{--bg:#121116;--ink:#f1f0f4;--muted:#a9a6b3;--line:#2a2830;--accent:#8b87ff;--card:#1a1920}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--accent)}
.wrap{max-width:760px;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:800;letter-spacing:.12em;text-decoration:none;color:var(--ink)}
nav a{color:var(--muted);text-decoration:none;margin-left:20px;font-size:15px}
nav a:hover{color:var(--ink)}
main{padding:56px 0 72px}
h1{font-size:clamp(32px,6vw,48px);line-height:1.1;margin:0 0 16px;letter-spacing:-.02em}
h2{font-size:22px;margin:40px 0 8px}
.lead{font-size:20px;color:var(--muted);margin:0 0 32px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;margin:24px 0}
.card p{margin:4px 0}
.muted{color:var(--muted)}
footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:14px}
footer a{color:var(--muted)}