:root{color-scheme:light;--ink:#241d1d;--muted:#5d5757;--paper:#faf7f2;--line:#ddd5cf;--accent:#aa3636}
*{box-sizing:border-box}
html{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--paper);color:var(--ink)}
body{margin:0;line-height:1.6}
main{max-width:740px;margin:0 auto;padding:48px 24px 80px}
nav{margin-bottom:56px}nav a{font-weight:700;text-decoration:none;color:var(--ink)}
h1{font-size:clamp(2rem,5vw,3rem);line-height:1.15;letter-spacing:-.03em;margin:0 0 20px}
h2{font-size:1.3rem;margin:36px 0 8px}
p,li{font-size:1rem}p.lead{font-size:1.15rem;color:var(--muted)}
a{color:var(--accent)}a:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.action{display:inline-block;background:var(--accent);color:#fff;border-radius:10px;padding:12px 18px;text-decoration:none;font-weight:700;margin:14px 0}
.note{border:1px solid var(--line);border-radius:12px;padding:18px;background:#fff}
footer{border-top:1px solid var(--line);margin-top:56px;padding-top:20px;color:var(--muted);font-size:.9rem}
@media(max-width:520px){main{padding:28px 20px 56px}nav{margin-bottom:40px}}