:root {
  --text: #1f2937;
  --muted: #667085;
  --border: #e4e7ec;
  --panel: #f8fafc;
  --accent: #6d28d9;
  --accent-soft: #f3e8ff;
  --success: #166534;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", sans-serif;
  font-size: 16px;
  line-height: 1.72;
}
main { max-width: 960px; margin: 0 auto; padding: 28px 22px 72px; }
h1 { font-size: 2rem; line-height: 1.28; margin: 18px 0 10px; }
h2 { margin-top: 2.2em; padding-bottom: .35em; border-bottom: 1px solid var(--border); font-size: 1.38rem; }
h3 { margin-top: 1.55em; font-size: 1.08rem; }
p, li, td, th { overflow-wrap: anywhere; }
a { color: var(--accent); }
.meta { color: var(--muted); margin: 0 0 24px; }
.language-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  padding: 12px 14px; border: 1px solid var(--border); border-radius: 12px;
  background: var(--panel); font-size: .9rem;
}
.language-bar strong { margin-right: 4px; }
.language-bar a { text-decoration: none; padding: 3px 8px; border-radius: 6px; }
.language-bar a[aria-current="page"] { background: var(--accent-soft); font-weight: 700; }
.toc, .note, .card, .identity {
  border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px;
  margin: 20px 0; background: var(--panel);
}
.identity p { margin: .35em 0; }
.toc ul { columns: 2; padding-left: 20px; margin: 8px 0 0; }
table { width: 100%; border-collapse: collapse; margin: 16px 0 26px; font-size: .94rem; }
th, td { border: 1px solid var(--border); padding: 11px 12px; text-align: left; vertical-align: top; }
th { background: var(--panel); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.button {
  display: inline-block; border-radius: 8px; padding: 11px 16px;
  background: #111827; color: #fff; text-decoration: none; font-size: 15px;
}
.button.secondary { background: #e5e7eb; color: #111827; }
.badge { display:inline-block; padding:.15em .55em; border-radius:999px; background:#ecfdf3; color:var(--success); font-size:.84rem; font-weight:700; }
.small { color: var(--muted); font-size: .92rem; }
footer { margin-top: 52px; padding-top: 24px; border-top: 1px solid var(--border); color: var(--muted); font-size: .9rem; }
.root-card { max-width: 720px; margin: 80px auto; }
@media (max-width: 700px) {
  main { padding: 18px 16px 56px; }
  h1 { font-size: 1.65rem; }
  .toc ul { columns: 1; }
  table { display: block; overflow-x: auto; white-space: normal; }
}
@media print {
  .language-bar, .actions { display:none; }
  main { max-width:none; padding:0; }
  a { color:inherit; text-decoration:none; }
}