:root{--text:#1d1d1f;--muted:#5f6368;--bg:#ffffff;--accent:#1f4e79}
@media (prefers-color-scheme:dark){:root{--text:#f2f2f2;--muted:#b0b0b0;--bg:#141414;--accent:#7fb0e0}}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--text);background:var(--bg);line-height:1.5}
.wrap{max-width:860px;margin:0 auto;padding:48px 16px}
h1{font-size:2rem;margin:0 0 .5rem}
p{color:var(--muted)}
.btn{display:inline-block;padding:.7rem 1.1rem;border-radius:8px;background:var(--accent);color:#fff;text-decoration:none}