:root {
  --text: #1a1a1a;
  --muted: #666;
  --border: #e5e5e5;
  --accent: #2563eb;
  --panel-bg: #f5f7fa;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  line-height: 1.75;
  background: #fafafa;
}
html[lang="en"] body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}
.wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 24px 20px 64px;
  background: #fff;
  min-height: 100vh;
}
h1 { font-size: 1.75rem; margin: 0 0 8px; }
.meta { color: var(--muted); font-size: 0.9rem; margin-bottom: 32px; }
h2 { font-size: 1.15rem; margin-top: 2em; border-bottom: 1px solid var(--border); padding-bottom: 0.35em; }
h3 { font-size: 1rem; margin-top: 1.25em; margin-bottom: 0.5em; }
p, li { font-size: 0.95rem; }
ul, ol { padding-left: 1.25em; }
ul.compact li { margin-bottom: 0.35em; }
a { color: var(--accent); }
.toc {
  background: var(--panel-bg);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 24px 0;
}
.toc ol { margin: 0; padding-left: 1.25em; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }
.notice {
  font-size: 0.85rem;
  color: var(--muted);
  border-left: 3px solid var(--border);
  padding-left: 12px;
  margin: 24px 0;
}
.legal-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 12px 0 20px;
}
.legal-table th,
.legal-table td {
  border: 1px solid var(--border);
  padding: 10px;
  text-align: left;
  vertical-align: top;
}
.perm-block {
  background: var(--panel-bg);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 12px 0;
  font-size: 0.92rem;
}
.perm-block strong { display: block; margin-bottom: 6px; }
.contact-card {
  background: var(--panel-bg);
  border-radius: 8px;
  padding: 16px 20px;
  margin-top: 12px;
  line-height: 1.9;
}
.footer-note {
  margin-top: 32px;
  font-size: 0.85rem;
  color: var(--muted);
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #eee;
    --muted: #aaa;
    --border: #333;
    --panel-bg: #252525;
  }
  body { background: #111; }
  .wrap { background: #1a1a1a; }
}