:root {
  --ink: #172126;
  --navy: #203d59;
  --cream: #fff0c8;
  --paper: #fff8e7;
  --signal: #1aa9d1;
  --danger: #ef5b45;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.8;
}
header {
  background: var(--navy);
  color: var(--cream);
  padding: 40px 24px;
  text-align: center;
}
header img { width: 96px; height: 96px; border-radius: 22px; }
header h1 { font-size: 32px; margin-top: 12px; }
header p { opacity: 0.85; }
nav { margin-top: 16px; }
nav a { color: var(--signal); margin: 0 10px; text-decoration: none; font-weight: bold; }
main { max-width: 720px; margin: 0 auto; padding: 32px 24px 64px; }
h2 { margin: 32px 0 12px; border-left: 6px solid var(--signal); padding-left: 12px; font-size: 22px; }
h3 { margin: 20px 0 8px; font-size: 17px; }
p, li { margin-bottom: 8px; }
ul { padding-left: 24px; }
.en { color: #445; }
footer { text-align: center; padding: 24px; color: #667; font-size: 13px; }
.badge { display: inline-block; background: var(--signal); color: #fff; border-radius: 8px; padding: 2px 10px; font-size: 13px; }
hr { border: none; border-top: 1px solid #ddd; margin: 32px 0; }