:root {
  --bg: #f6f6f8;
  --card: #ffffff;
  --text: #16161a;
  --muted: #5c5c66;
  --line: #e3e3ea;
  --accent: #e8261a;
  --amber: #ffbd1a;
  --board: #0d0d10;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0d10;
    --card: #17171c;
    --text: #f2f2f5;
    --muted: #a3a3ad;
    --line: #2a2a32;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px 64px; }
header.hero {
  background: var(--board);
  color: #fff;
  padding: 48px 16px 40px;
  text-align: center;
}
header.hero img { width: 96px; height: 96px; border-radius: 22px; }
header.hero h1 { margin: 16px 0 4px; font-size: 34px; letter-spacing: -0.5px; }
header.hero p { margin: 0; color: #c9c9d1; }
header.hero .tag {
  display: inline-block; margin-top: 14px; padding: 4px 12px; border-radius: 999px;
  background: rgba(255, 189, 26, 0.15); color: var(--amber); font-weight: 600; font-size: 14px;
}
nav { display: flex; gap: 18px; justify-content: center; padding: 16px; font-weight: 600; }
nav a { color: var(--accent); text-decoration: none; }
h2 { font-size: 22px; margin: 36px 0 12px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 20px; margin: 12px 0;
}
.contact a.button {
  display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  padding: 12px 20px; border-radius: 12px; font-weight: 600; margin-top: 6px;
}
details { border-top: 1px solid var(--line); padding: 14px 0; }
details:first-of-type { border-top: 0; }
summary { cursor: pointer; font-weight: 600; }
details p, details ol, details ul { color: var(--muted); margin: 10px 0 0; }
p.muted, footer { color: var(--muted); }
footer { text-align: center; font-size: 14px; margin-top: 40px; }
a { color: var(--accent); }