:root {
  color-scheme: light dark;
  --bg: #f4f2ee;
  --text: #1c1b18;
  --muted: #57534c;
  --line: #d7d2c8;
  --accent: #79582e;
  --soft: #eae4d9;
  --focus: #856234;
  --selection: #e6c796;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  scrollbar-color: var(--line) var(--bg);
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e0f12; --text: #f3f0ea; --muted: #b3aea5; --line: #34363c; --accent: #f2b35e; --soft: #202126; --focus: #f2b35e; --selection: #664820; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 16px; line-height: 1.75; }
::selection { background: var(--selection); color: var(--text); }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 5px; border-radius: 3px; }
main:focus { outline: none; }
.skip-link { position: absolute; top: 12px; left: 20px; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); background: var(--bg); z-index: 5; }
.skip-link:focus { width: auto; height: auto; overflow: visible; clip-path: none; padding: 10px 18px; }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { max-width: 1160px; margin: auto; padding: 20px 40px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; color: var(--text); flex-shrink: 0; font-size: 21px; font-weight: 650; letter-spacing: -0.025em; }
.brand img { display: block; border-radius: 9px; }
.main-nav { display: flex; gap: 28px; align-items: center; margin-left: auto; }
.main-nav a { color: var(--muted); text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; font-size: 14px; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--text); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 8px; }
.document, .home { max-width: 860px; margin: auto; padding: 64px 40px 88px; }
.page-heading { padding-bottom: 40px; border-bottom: 1px solid var(--line); margin-bottom: 44px; }
h1 { margin: 0 0 20px; font-size: clamp(36px, 4.8vw, 58px); font-weight: 600; line-height: 1.12; letter-spacing: -0.035em; text-wrap: balance; }
.intro { color: var(--muted); font-size: clamp(18px, 2vw, 21px); line-height: 1.65; max-width: 710px; margin: 0; }
.meta { font-size: 12px; color: var(--muted); margin: 24px 0 0; display: flex; flex-wrap: wrap; gap: 12px; font-variant-numeric: tabular-nums; }
.prose { min-width: 0; max-width: 74ch; }
.prose section { scroll-margin-top: 28px; margin-top: 42px; }
.prose section:first-child { margin-top: 0; }
h2 { font-size: 23px; font-weight: 600; letter-spacing: -0.02em; line-height: 1.35; margin: 0 0 16px; text-wrap: balance; }
p { margin: 0 0 16px; }
.prose p, .prose li { color: var(--muted); overflow-wrap: break-word; }
strong { color: var(--text); font-weight: 600; }
ul, ol { padding-left: 22px; margin: 16px 0 20px; }
li { padding-left: 6px; margin-bottom: 10px; }
li::marker { color: var(--accent); }
.at-a-glance { display: grid; grid-template-columns: 1fr 1.2fr 1fr; gap: 20px; margin: 0 0 38px; padding: 0 0 28px; border-bottom: 1px solid var(--line); }
.at-a-glance dt { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.at-a-glance dd { margin: 0; font-size: 14px; font-weight: 600; }
.back-top { display: inline-block; font-size: 13px; margin-top: 36px; padding: 8px 0; }
.faq { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { list-style: none; cursor: pointer; position: relative; padding: 20px 38px 20px 0; font-size: 16px; line-height: 1.5; font-weight: 550; }
summary::-webkit-details-marker { display: none; }
summary::after { content: ""; position: absolute; right: 6px; top: 26px; width: 7px; height: 7px; border-right: 1.5px solid var(--accent); border-bottom: 1.5px solid var(--accent); transform: rotate(45deg); transition: transform .16s ease-out; }
details[open] summary::after { transform: rotate(225deg); top: 30px; }
summary:hover { color: var(--accent); }
details > div { padding: 0 24px 10px 0; }
details > div p { font-size: 15px; }
.contact-block { margin: 20px 0 24px; padding: 26px 28px 24px; background: var(--soft); border-radius: 12px; }
.contact-block p { margin-bottom: 12px; }
.contact-block .small { font-size: 12px; margin-top: 12px; margin-bottom: 0; }
.email-link { font-size: clamp(20px, 2.4vw, 25px); letter-spacing: -0.02em; display: inline-flex; align-items: center; gap: 12px; font-weight: 550; overflow-wrap: anywhere; }
svg { width: 22px; height: 22px; stroke: currentColor; stroke-width: 1.5; fill: none; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.site-footer { max-width: 1080px; border-top: 1px solid var(--line); margin: 0 auto; padding: 28px 0 36px; color: var(--muted); font-size: 12px; display: flex; justify-content: space-between; gap: 24px; }
.site-footer p { margin: 0; }
.home { max-width: 920px; padding-top: 84px; min-height: calc(100vh - 186px); }
.home h1 { max-width: 680px; }
.home .intro { max-width: 600px; }
.directory { margin-top: 54px; border-top: 1px solid var(--line); }
.directory-link { padding: 26px 0; display: flex; justify-content: space-between; align-items: center; gap: 30px; border-bottom: 1px solid var(--line); text-decoration: none; color: var(--text); }
.directory-link h2 { margin-bottom: 6px; }
.directory-link p { font-size: 15px; margin: 0; color: var(--muted); }
.directory-link svg { color: var(--accent); transition: transform .16s ease-out; }
.directory-link:hover h2 { color: var(--accent); }
.directory-link:hover svg { transform: translateX(4px); }
@media (max-width: 1160px) { .site-footer { margin-left: 40px; margin-right: 40px; } }
@media (max-width: 800px) {
  .header-inner { padding: 16px 24px; gap: 22px; }
  .document, .home { padding: 44px 24px 64px; }
  .page-heading { padding-bottom: 28px; margin-bottom: 28px; }
  .prose { max-width: none; }
  .site-footer { margin-left: 24px; margin-right: 24px; }
}
@media (max-width: 540px) {
  .header-inner { flex-wrap: wrap; column-gap: 12px; row-gap: 8px; }
  .brand { font-size: 20px; }
  .brand img { width: 32px; height: 32px; }
  .main-nav { order: 2; width: 100%; margin: 0; justify-content: space-between; gap: 12px; }
  .main-nav a { min-height: 38px; }
  .document, .home { padding-top: 36px; }
  h1 { font-size: 38px; }
  h2 { font-size: 22px; }
  .meta { gap: 6px 10px; }
  .meta > span[aria-hidden] { display: none; }
  .meta > span:last-child { width: 100%; }
  .at-a-glance { grid-template-columns: 1fr; gap: 12px; }
  .at-a-glance > div { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
  .at-a-glance dt { margin: 0; }
  .contact-block { padding: 22px 20px; }
  .email-link { font-size: 21px; gap: 8px; }
  .site-footer { flex-direction: column; gap: 12px; }
  .directory { margin-top: 36px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; } }
@media print {
  :root { --bg: #fff; --text: #000; --muted: #333; --line: #ccc; --accent: #333; --soft: #eee; color-scheme: light; }
  .site-header, .back-top, .skip-link, .site-footer { display: none; }
  .document { padding: 0; max-width: none; }
  .prose { max-width: none; }
  h1 { font-size: 30px; }
  h2 { break-after: avoid; }
  .prose section { margin-top: 28px; }
}