:root {
  color-scheme: light dark;
  --bg: #fff; --surface: #f6f7f8; --text: #22252b; --muted: #61656e;
  --line: #dedfe3; --accent: #894256; --accent-bg: #faf1f4; --focus: #245ecb;
  --radius: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 100%; font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 2rem; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.7; -webkit-text-size-adjust: 100%; }
a { color: var(--accent); text-underline-offset: .22em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--focus); outline-offset: 5px; border-radius: 3px; }
main, .site-header, .site-footer { width: min(1120px, calc(100% - 80px)); margin-inline: auto; }
main { min-height: 55vh; padding-bottom: 5rem; }
.site-header { display: flex; justify-content: space-between; gap: 1rem; align-items: center; padding-block: 1.55rem; border-bottom: 1px solid var(--line); }
.brand { color: var(--text); font-weight: 700; font-size: 1.12rem; letter-spacing: -.025em; text-decoration: none; }
.brand span { display: block; color: var(--muted); font-size: .875rem; font-weight: 400; letter-spacing: 0; }
.site-header nav, .site-footer nav { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem 1.5rem; }
.site-header nav a { color: var(--text); font-size: .9rem; text-decoration: none; padding-block: .5rem; min-height: 44px; display: inline-flex; align-items: center; }
.language-link { border: 1px solid var(--line); padding: .35rem .85rem !important; border-radius: 6px; }
.page-heading { padding-block: 4rem 2.75rem; max-width: 840px; }
.eyebrow { font-size: .875rem; color: var(--accent); font-weight: 600; margin: 0 0 .8rem; letter-spacing: .04em; }
h1 { font-size: clamp(2rem, 4.8vw, 3.5rem); font-weight: 650; letter-spacing: -.045em; line-height: 1.15; margin: 0 0 1.15rem; }
html[lang=zh] h1 { letter-spacing: -.02em; }
.lede { font-size: 1.125rem; line-height: 1.7; color: var(--muted); max-width: 650px; margin: 0; }
.app-directory { border-top: 1px solid var(--line); }
.app-card { display: grid; grid-template-columns: 70px 1fr; padding: 2rem 0; border-bottom: 1px solid var(--line); gap: 1.5rem; }
.app-number { color: var(--muted); font-variant-numeric: tabular-nums; font-size: .875rem; padding-top: .35rem; }
.app-card h2 { font-size: 1.6rem; letter-spacing: -.02em; line-height: 1.4; margin: 0 0 .55rem; }
.app-card p { color: var(--muted); margin: 0 0 1.25rem; max-width: 680px; }
.primary-link { font-weight: 600; font-size: 1rem; }
.primary-link span { margin-left: .3rem; }
.directory-note { color: var(--muted); font-size: .9rem; max-width: 740px; margin-top: 2rem; }
.site-footer { border-top: 1px solid var(--line); padding-block: 2rem 2.5rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.5rem; }
.site-footer strong { font-size: .95rem; }
.site-footer div span { font-size: .875rem; display: block; color: var(--muted); }
.site-footer nav a { font-size: .875rem; }
.site-footer p { font-size: .875rem; color: var(--muted); flex-basis: 100%; margin: 0; }
.skip-link { position: absolute; left: 1rem; top: -6rem; padding: .8rem 1rem; background: var(--bg); z-index: 10; }
.skip-link:focus { top: 1rem; }
.policy-heading { max-width: none; border-bottom: 1px solid var(--line); padding-bottom: 2rem; margin-bottom: 2.5rem; }
.policy-meta { display: flex; flex-wrap: wrap; gap: 1rem 2.5rem; margin: 1.75rem 0 0; font-size: .875rem; }
.policy-meta div { display: flex; gap: .75rem; }
.policy-meta dt { color: var(--muted); }
.policy-meta dd { margin: 0; font-variant-numeric: tabular-nums; }
.policy-grid { display: grid; grid-template-columns: 215px minmax(0, 1fr); gap: 3.25rem; }
.policy-toc { align-self: start; position: sticky; top: 2rem; font-size: .875rem; max-height: calc(100vh - 4rem); overflow-y: auto; }
.toc-label { font-weight: 600; margin: 0; padding-block: .35rem; }
.mobile-toc { display: none; }
.mobile-toc summary { cursor: pointer; font-weight: 600; padding-block: .35rem; }
.policy-reading { min-width: 0; }
.policy-toc ol, .mobile-toc ol { list-style: none; margin: .75rem 0 0; padding: 0; }
.policy-toc a, .mobile-toc a { display: block; padding: .3rem 0; color: var(--muted); text-decoration: none; }
.policy-toc a:hover, .mobile-toc a:hover { color: var(--accent); text-decoration: underline; }
.prose { font-size: 1rem; line-height: 1.85; max-width: 760px; overflow-wrap: anywhere; }
.prose h2 { font-size: 1.35rem; line-height: 1.5; margin: 2.5rem 0 .9rem; letter-spacing: -.015em; }
.prose h3 { font-size: 1.08rem; margin: 1.75rem 0 .65rem; }
.prose p { margin: .85rem 0; }
.prose ul, .prose ol { padding-left: 1.4rem; }
.prose li { margin: .4rem 0; }
.prose li::marker { color: var(--muted); }
.prose h2:first-child { margin-top: 0; }
.prose img { max-width: 100%; height: auto; border-radius: var(--radius); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
.summary-box { border-left: 3px solid var(--accent); background: var(--accent-bg); padding: 1.05rem 1.3rem; margin-bottom: 2.25rem; border-radius: 0 var(--radius) var(--radius) 0; }
.summary-box p:first-child { margin-top: 0; }
.summary-box p:last-child { margin-bottom: 0; }
.summary-box ul { margin: .5rem 0 0; }
.summary-box strong { font-weight: 650; }
.contact-panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem 1.5rem; margin-top: 2rem; }
.contact-panel h2 { margin-top: 0; }
.support-page { max-width: 760px; }
.legacy-policy { border-top: 1px solid var(--line); margin-top: 3rem; padding-top: 2rem; }
.legacy-policy > h2 { font-size: 1.65rem; }
.version-note { font-size: .875rem; color: var(--muted); }
@media (prefers-color-scheme: dark) {
  :root { --bg: #141518; --surface: #1e2025; --text: #eeeff2; --muted: #adb0ba; --line: #383b43; --accent: #e7a3b8; --accent-bg: #271f25; --focus: #9dbfff; }
}
@media (max-width: 800px) {
  main, .site-header, .site-footer { width: calc(100% - 40px); }
  .page-heading { padding-block: 2.75rem 2rem; }
  .policy-grid { grid-template-columns: minmax(0, 1fr); gap: 1.75rem; }
  .policy-toc { display: none; }
  .mobile-toc { display: block; background: var(--surface); padding: .7rem 1.15rem; border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 1.75rem; }
  .mobile-toc ol { columns: 2; column-gap: 1rem; }
  .mobile-toc li { break-inside: avoid; }
  .mobile-toc a { padding: .42rem 0; min-height: 44px; }
  .policy-heading { margin-bottom: 1.75rem; }
  .app-card { grid-template-columns: 32px 1fr; gap: 1rem; padding-block: 1.6rem; }
}
@media (max-width: 440px) {
  .site-header { flex-wrap: wrap; }
  .site-header nav { gap: .6rem; }
  .site-header nav a { font-size: .875rem; }
  .page-heading { padding-top: 2.5rem; }
  .lede { font-size: 1rem; }
  .policy-meta { gap: .5rem 1rem; }
  .policy-meta div { gap: .5rem; }
  .mobile-toc ol { columns: 1; }
  .app-card h2 { font-size: 1.4rem; }
  .site-footer { flex-direction: column; }
  .prose h2 { font-size: 1.22rem; }
  .summary-box { padding: 1rem; }
}
@media print {
  :root { --bg: #fff; --text: #000; --muted: #444; --line: #bbb; --accent: #000; --accent-bg: #fff; }
  .site-header, .site-footer, .policy-toc, .mobile-toc, .skip-link { display: none; }
  main { width: 100%; padding: 0; }
  .policy-grid { display: block; }
  .page-heading { padding-top: 0; }
  .prose { max-width: none; }
  h2, h3 { break-after: avoid; }
  .summary-box { border: 1px solid #bbb; }
  a { text-decoration: underline; }
}