:root { --bg: #ffffff; --fg: #1d1d1f; --muted: #6e6e73; --accent: #0a84ff; --line: #e5e5ea; }
@media (prefers-color-scheme: dark) { :root { --bg: #000000; --fg: #f5f5f7; --muted: #a1a1a6; --accent: #409cff; --line: #2c2c2e; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; flex-direction: column; gap: 4px; margin-bottom: 8px; }
header img { width: 56px; height: 56px; border-radius: 13px; }
h1 { font-size: 30px; margin: 0; overflow-wrap: break-word; hyphens: auto; }
h2 { font-size: 21px; margin: 32px 0 8px; }
p, li { color: var(--fg); }
.muted { color: var(--muted); font-size: 15px; }
a { color: var(--accent); text-decoration: none; } a:hover { text-decoration: underline; }
nav { margin: 8px 0 24px; font-size: 15px; } nav a { margin-right: 16px; }
ul { padding-left: 22px; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); }
.lang { display: flex; align-self: flex-end; order: -1; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; font-size: 14px; font-weight: 600; }
.lang a, .lang span { padding: 4px 10px; color: var(--muted); }
.lang a:hover { text-decoration: none; color: var(--fg); }
.lang span { background: var(--line); color: var(--fg); }