/* アプリのカラーパレット（ネイビー × オレンジ × クリーム）に合わせる */
:root {
  color-scheme: light dark;
  --background: #FAF0DE;
  --surface: #FFFFFF;
  --text-primary: #2A2D5B;
  --text-secondary: #5C5F85;
  --accent: #E87A2E;
  --border: rgba(42, 45, 91, 0.12);
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #16172E;
    --surface: #202244;
    --text-primary: #F3EEE4;
    --text-secondary: #B9BAD3;
    --accent: #F29A5B;
    --border: rgba(243, 238, 228, 0.14);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 760px;
  margin: 0 auto;
  padding: 16px;
}

.app-name {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.lang-switch {
  color: var(--text-secondary);
  font-size: 14px;
}

main {
  max-width: 760px;
  margin: 0 auto 48px;
  padding: 24px 16px;
  background: var(--surface);
  border-radius: 16px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

@media (min-width: 792px) {
  main {
    padding: 32px 40px;
  }
}

h1 {
  font-size: 1.6rem;
  line-height: 1.4;
  margin-top: 0;
}

h2 {
  font-size: 1.2rem;
  margin-top: 2em;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--accent);
}

h3 {
  font-size: 1.05rem;
  margin-top: 1.5em;
}

a {
  color: var(--accent);
  overflow-wrap: anywhere;
}

table {
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
}

.index-links {
  padding-left: 1.2em;
  font-size: 1.1rem;
}