body { font-family: "Hiragino Sans", sans-serif; max-width: 720px; margin: 0 auto; padding: 24px 20px 64px;
  color: #1f2a44; background: #f7f7f0; line-height: 1.9; }
h1 { font-size: 1.5rem; border-left: 6px solid #c63b2f; padding-left: 12px; }
h2 { font-size: 1.15rem; margin-top: 2.2em; border-bottom: 2px solid #21305422; padding-bottom: 4px; }
a { color: #0a6e63; }
header a { text-decoration: none; color: #1f2a44; font-weight: bold; }
footer { margin-top: 48px; font-size: .85rem; color: #667; border-top: 1px solid #ccc; padding-top: 16px; }
.card { background: #fff; border: 1px solid #21305455; border-radius: 8px; padding: 4px 20px; margin: 16px 0; }