:root {
  --bg: #f5f7f8;
  --panel: #ffffff;
  --ink: #172026;
  --muted: #64717a;
  --line: #dbe2e6;
  --blue: #2f6f9f;
  font-family: "Yu Gothic UI", "Meiryo", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
}

.page {
  max-width: 860px;
  margin: 0 auto;
  padding: 34px 20px 54px;
}

.back {
  color: var(--blue);
  font-weight: 800;
  text-decoration: none;
}

h1 {
  margin: 24px 0 14px;
  font-size: 34px;
  letter-spacing: 0;
}

h2 {
  margin: 28px 0 8px;
  font-size: 20px;
  letter-spacing: 0;
}

p, li, dd {
  line-height: 1.8;
  color: var(--ink);
}

.note {
  padding: 12px 14px;
  border: 1px solid #eadfbf;
  background: #fff8e6;
  color: #755000;
  border-radius: 8px;
}

.small {
  color: var(--muted);
  font-size: 13px;
}

.info {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  overflow: hidden;
}

.info dt, .info dd {
  margin: 0;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
}

.info dt {
  font-weight: 800;
  background: #edf1f3;
}

.info dt:last-of-type, .info dd:last-of-type {
  border-bottom: 0;
}

@media (max-width: 560px) {
  h1 { font-size: 28px; }
  .info { grid-template-columns: 1fr; }
  .info dt { border-bottom: 0; }
}