:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #16202b;
  --muted: #4f5b67;
  --line: #dde2e8;
  --accent: #1d63a6;
  --lock: #9a5a0a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1419;
    --card: #182029;
    --text: #e8edf2;
    --muted: #a7b2bd;
    --line: #2a3541;
    --accent: #6fa8e0;
    --lock: #e0a35a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
header img { width: 72px; height: 72px; border-radius: 16px; }
header h1 { margin: 0; font-size: 28px; line-height: 1.3; }
header p { margin: 4px 0 0; color: var(--muted); }
nav { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; font-size: 15px; }
a { color: var(--accent); }
section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 16px;
}
h2 { margin: 0 0 8px; font-size: 20px; }
h3 { margin: 20px 0 4px; font-size: 16px; }
p, li { font-size: 15px; }
ul { padding-left: 1.3em; margin: 8px 0; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }
.ok { color: #2e7d4f; font-weight: 600; }
.ng { color: var(--lock); font-weight: 600; }
@media (prefers-color-scheme: dark) { .ok { color: #6fcf97; } }
.note { color: var(--muted); font-size: 14px; }
footer { color: var(--muted); font-size: 13px; text-align: center; margin-top: 32px; }