:root { color-scheme: light dark; --text: #243044; --muted: #475569; --border: #e2e8f0; --accent: #117568; --bg: #f8fafc; --surface: #fff; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.85 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }
.policy-nav { position: sticky; top: 0; z-index: 1; background: var(--surface); border-bottom: 1px solid var(--border); }
.policy-nav-inner { max-width: 800px; margin: 0 auto; padding: 6px 20px; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.policy-nav a { min-height: 44px; display: inline-flex; align-items: center; text-decoration: none; }
main { max-width: 800px; margin: 24px auto 40px; padding: 32px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; }
h1 { margin: 0 0 12px; font-size: 28px; line-height: 1.4; }
h2 { margin: 28px 0 12px; font-size: 20px; line-height: 1.5; }
p { margin: 0 0 16px; }
ul, ol { margin: 0 0 16px; padding-left: 24px; }
li { margin: 8px 0; }
.meta { color: var(--muted); font-size: 14px; }
a { color: var(--accent); text-underline-offset: 3px; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
@media (max-width: 640px) { main { margin: 12px 12px 24px; padding: 22px 20px; } h1 { font-size: 24px; } h2 { font-size: 18px; } }
@media (prefers-color-scheme: dark) { :root { --text: #eef8f5; --muted: #b3c6bf; --border: #34453e; --accent: #75ddc7; --bg: #101c19; --surface: #15241f; } }