:root {
  --bg: #ffffff;
  --text: #1c1c1e;
  --muted: #6e6e73;
  --accent: #5c4ff2;
  --surface: #f4f4f7;
  --border: #e3e3e8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f12;
    --text: #f2f2f7;
    --muted: #a1a1aa;
    --accent: #8b80ff;
    --surface: #1c1c22;
    --border: #2c2c34;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 48px 16px 80px; }
header { margin-bottom: 32px; }
header .app { color: var(--accent); font-weight: 600; text-decoration: none; }
h1 { font-size: 2rem; line-height: 1.2; margin: 8px 0; }
h2 { font-size: 1.25rem; margin: 40px 0 8px; }
h3 { font-size: 1.05rem; margin: 24px 0 4px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--accent); }
ul { padding-left: 1.2em; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  margin: 16px 0;
}
.card p:first-child { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 0.95rem; }
th, td { text-align: left; vertical-align: top; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }
details { border-bottom: 1px solid var(--border); padding: 12px 0; }
summary { cursor: pointer; font-weight: 600; }
footer { margin-top: 56px; color: var(--muted); font-size: 0.9rem; }