:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #0b1520;
  --muted: #4b5a68;
  --brand: #0d5c8c;
  --brand-deep: #0b3a63;
  --accent: #ff5a2d;
  --border: #e3e8ec;
  --card: #f6f8fa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1520;
    --fg: #f2f5f7;
    --muted: #9fb0bd;
    --brand: #4fa3d8;
    --brand-deep: #7cc0ea;
    --border: #1e2b36;
    --card: #101c26;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 20px 64px;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
}

header.top {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 28px 0 8px;
}

header.top .mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand-deep), var(--brand));
  flex-shrink: 0;
}

header.top .name {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}

h1 {
  font-size: 28px;
  line-height: 1.25;
  margin: 24px 0 4px;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 18px;
  margin: 32px 0 8px;
  color: var(--brand-deep);
}

@media (prefers-color-scheme: dark) {
  h2 {
    color: var(--brand);
  }
}

p {
  margin: 8px 0;
  color: var(--fg);
}

.meta {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 20px;
}

.notice {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--muted);
  margin: 20px 0 32px;
}

.notice strong {
  color: var(--fg);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 12px 0;
}

th,
td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
}

a {
  color: var(--brand);
}

footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}