* { box-sizing: border-box; }
[hidden] { display: none !important; }
.language-toggle { border: none; background: none; color: #555; width: 44px; height: 44px; padding: 12px; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; border-radius: 8px; }
.language-toggle:focus-visible { outline: 2px solid #0969da; outline-offset: 2px; }
@media (hover: hover) { .language-toggle:hover { background: #f2f2f2; } }
.top { align-items: center; }
.top > a { color: #666; text-decoration: none; }
html { color-scheme: light; background: #fff; }
body { margin: 0; color: #222; font: 16px/1.8 -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif; }
.top, main { max-width: 800px; margin: 0 auto; padding-left: max(24px, env(safe-area-inset-left)); padding-right: max(24px, env(safe-area-inset-right)); }
.top { padding-top: max(24px, env(safe-area-inset-top)); display: flex; justify-content: space-between; gap: 20px; font-size: 14px; }
main { padding-top: 32px; padding-bottom: max(48px, env(safe-area-inset-bottom)); }
h1 { font-size: 30px; line-height: 1.3; margin: 0 0 16px; padding-bottom: 12px; border-bottom: 1px solid #e5e5e5; }
h2 { font-size: 21px; line-height: 1.5; margin: 32px 0 12px; }
p, ul { margin: 12px 0; }
ul { padding-left: 24px; }
a { color: #0969da; text-underline-offset: 3px; overflow-wrap: anywhere; }
a:focus-visible { outline: 2px solid #0969da; outline-offset: 3px; }