body {
  max-width: 920px;
  margin: auto;
  padding: 24px;
  color: #1f2933;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.72;
}
h1, h2 { color: #12343b; }
h1 { font-size: 28px; }
h2 { margin-top: 32px; font-size: 20px; }
.date { color: #607d8b; }
table { width: 100%; border-collapse: collapse; margin: 12px 0 20px; font-size: 15px; }
th, td { border: 1px solid #d6dee2; padding: 10px; vertical-align: top; }
th { background: #f1f7f4; color: #12343b; }
a { color: #007a8a; }
.notice { background: #fff8e1; border: 1px solid #f3d58a; border-radius: 12px; padding: 14px; }