/* Static site stylesheet – system fonts only, no external resources. */
:root {
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: #d2d2d7;
  --link: #0066cc;
  --accent: #0071e3;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --bg-soft: #1d1d1f;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --line: #424245;
    --link: #2997ff;
    --accent: #2997ff;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 22px; }
a { color: var(--link); text-decoration: none; overflow-wrap: anywhere; }
a:hover, a:focus { text-decoration: underline; }
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 52px; flex-wrap: wrap; }
.brand { color: var(--text); font-weight: 600; font-size: 15px; letter-spacing: -0.01em; }
.lang { font-size: 13px; color: var(--muted); }
.lang a { color: var(--muted); }
main { padding-top: 40px; padding-bottom: 56px; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; font-weight: 600; }
h1 { font-size: 40px; margin: 0 0 16px; }
h2 { font-size: 28px; margin: 40px 0 12px; }
h3 { font-size: 20px; margin: 30px 0 8px; }
section:first-of-type > h1:first-child, section:first-of-type > h2:first-child { margin-top: 0; }
p, ul, ol, table { margin: 0 0 14px; }
li { margin-bottom: 6px; }
em { color: var(--muted); }
hr { border: 0; border-top: 1px solid var(--line); margin: 48px 0; }
code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.88em; background: var(--bg-soft); padding: 1px 5px; border-radius: 5px; overflow-wrap: anywhere; }
.lead { font-size: 21px; color: var(--muted); }
.hero { padding: 24px 0 8px; }
.hero h1 { font-size: 48px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 28px 0; }
.card { display: block; background: var(--bg-soft); border-radius: 18px; padding: 20px 22px; color: var(--text); }
.card:hover, .card:focus { text-decoration: none; outline: 2px solid var(--accent); outline-offset: 0; }
.card strong { display: block; font-size: 17px; margin-bottom: 4px; }
.card span { color: var(--muted); font-size: 15px; }
.notice { border: 2px solid var(--accent); border-radius: 14px; padding: 14px 18px; margin: 18px 0; background: var(--bg-soft); }
.notice p:last-child { margin-bottom: 0; }
.note { font-size: 15px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 14px; margin-top: 28px; }
.table-scroll { overflow-x: auto; margin: 0 0 14px; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); padding: 8px 10px 8px 0; }
th { font-weight: 600; }
address { font-style: normal; }
.site-footer { border-top: 1px solid var(--line); background: var(--bg-soft); color: var(--muted); font-size: 13px; padding: 20px 0 28px; }
.site-footer p { margin: 8px 0 0; }
.site-footer a { color: var(--muted); }
@media (max-width: 600px) {
  body { font-size: 16px; }
  h1, .hero h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  .lead { font-size: 18px; }
}