:root {
  --primary: #3b82f6;
  --fg: #0f172a;
  --muted: #64748b;
  --bg: #f8fafc;
  --card: #ffffff;
  --border: #e2e8f0;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 32px 20px 64px; }
header { text-align: center; padding: 24px 0 32px; }
header img { width: 72px; height: 72px; border-radius: 16px; box-shadow: 0 4px 12px rgba(0,0,0,.08); }
header h1 { font-size: 28px; margin-top: 16px; }
header p { color: var(--muted); margin-top: 6px; }
.back { display: inline-block; color: var(--primary); text-decoration: none; font-size: 14px; font-weight: 500; margin-bottom: 8px; }
.back:hover { text-decoration: underline; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  margin-top: 20px;
}
.card h2 { font-size: 18px; margin-bottom: 12px; }
.card h3 { font-size: 15px; margin: 18px 0 8px; }
.card p { color: var(--muted); font-size: 15px; margin-bottom: 10px; }
.muted-date { color: var(--muted); font-size: 13px; }
ol, ul { color: var(--muted); font-size: 15px; margin: 6px 0 10px 20px; }
ol li, ul li { margin-bottom: 6px; }
.contact a {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--primary); font-weight: 600; text-decoration: none; font-size: 17px;
}
.contact a:hover { text-decoration: underline; }
details { border-bottom: 1px solid var(--border); padding: 14px 0; }
details:last-child { border-bottom: none; }
summary { font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--muted); font-size: 20px; }
details[open] summary::after { content: "\2013"; }
details p { color: var(--muted); margin-top: 10px; font-size: 15px; }
.note { background: #eff6ff; border: 1px solid #bfdbfe; border-radius: 12px; padding: 14px 16px; margin-top: 16px; color: #1e3a8a; font-size: 14px; }
.links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.links a { color: var(--primary); text-decoration: none; font-size: 14px; font-weight: 500; }
.links a:hover { text-decoration: underline; }
footer { text-align: center; color: var(--muted); font-size: 13px; margin-top: 40px; }
.contact-email { font-weight: 600; color: var(--fg); }