:root{--bg:#f7f8fa;--fg:#1c2230;--muted:#5b6475;--accent:#2f6fde;--card:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#12151c;--fg:#e6e9ef;--muted:#9aa3b5;--accent:#6a9bf5;--card:#1b2029}}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--fg);line-height:1.6}
header,footer{padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}
header a,footer a{color:var(--fg);text-decoration:none;margin-left:1.2rem}
.logo{font-weight:700;font-size:1.25rem;margin-left:0!important}
main{max-width:960px;margin:0 auto;padding:2rem 1.5rem}
h1{font-size:2.2rem;line-height:1.2}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}
.card{background:var(--card);border-radius:12px;padding:1.2rem}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:.7rem 1.3rem;border-radius:8px;text-decoration:none}
footer{color:var(--muted);font-size:.9rem;border-top:1px solid rgba(127,127,127,.2)}