:root{color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:#101724;color:#eef3ff;font-family:system-ui,-apple-system,sans-serif;line-height:1.9}main{max-width:820px;margin:auto;padding:48px 24px 72px}nav{display:flex;flex-wrap:wrap;gap:12px 24px;border-bottom:1px solid #30405a;padding-bottom:20px}nav a{text-decoration:none}h1{font-size:clamp(32px,7vw,56px);line-height:1.3;margin:36px 0 20px}h2{font-size:23px;margin-top:44px}h3{font-size:18px;margin-top:28px}p,li{color:#c5d0e3}a{color:#8fc9ff;text-underline-offset:4px}a:focus-visible{outline:3px solid #fbd26d;outline-offset:5px}.button{display:inline-block;background:#87c8ff;color:#102039;text-decoration:none;padding:12px 24px;border-radius:12px;font-weight:700;margin:12px 0}.muted,footer{color:#a2b2ce;font-size:14px}footer{margin-top:64px;border-top:1px solid #30405a;padding-top:24px}.card{background:#19243a;padding:20px 24px;border-radius:16px;margin:24px 0}li{margin-bottom:8px}ul,ol{padding-left:24px}html{scroll-behavior:smooth}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}