:root { color-scheme: light dark; --text: #1d1d1f; --muted: #6e6e73; --bg: #ffffff; --line: #d2d2d7; --link: #0066cc; }
@media (prefers-color-scheme: dark) { :root { --text: #f5f5f7; --muted: #a1a1a6; --bg: #000000; --line: #424245; --link: #2997ff; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.75 -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Helvetica Neue", sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
header img { width: 72px; height: 72px; border-radius: 16px; }
h1 { font-size: 1.75rem; line-height: 1.3; margin: 0 0 8px; }
h2 { font-size: 1.2rem; margin: 2em 0 0.5em; }
h3 { font-size: 1.05rem; margin: 1.5em 0 0.5em; }
p, li { overflow-wrap: anywhere; }
a { color: var(--link); }
.muted { color: var(--muted); }
nav.links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 24px 0; }
.button { display: inline-block; padding: 10px 20px; border-radius: 999px; background: var(--link); color: #fff; text-decoration: none; font-weight: 600; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 0.875rem; }