:root {
  --bg: #FAF7F1;
  --card: #FFFFFF;
  --card-border: #EFE8DC;
  --surface: #F2EDE0;
  --primary: #B8513A;
  --primary-hover: #A04330;
  --text: #1A1410;
  --text-secondary: #6B5F55;
  --text-muted: #9C9289;
  --max-width: 720px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-weight: 400;
  line-height: 1.85;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 96px;
}

@media (max-width: 600px) {
  .container {
    padding: 32px 20px 64px;
  }
}

header.site-header {
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 24px;
  margin-bottom: 40px;
}

header.site-header .brand {
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 8px;
}

header.site-header .brand a {
  color: inherit;
  text-decoration: none;
}

h1 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 8px;
  color: var(--text);
}

.meta {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 32px;
}

h2 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  margin: 48px 0 16px;
  padding-top: 8px;
  color: var(--text);
}

h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  margin: 28px 0 8px;
  color: var(--text);
}

p {
  margin: 0 0 16px;
  color: var(--text);
}

ul, ol {
  margin: 0 0 16px;
  padding-left: 1.4em;
}

li {
  margin-bottom: 6px;
}

a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--primary-hover);
}

strong {
  font-weight: 700;
}

hr {
  border: none;
  border-top: 1px solid var(--card-border);
  margin: 48px 0;
}

dl.info {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 12px 24px;
  margin: 0 0 16px;
}

@media (max-width: 600px) {
  dl.info {
    grid-template-columns: 1fr;
    gap: 4px 0;
  }
  dl.info dt {
    margin-top: 12px;
  }
}

dl.info dt {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 14px;
}

dl.info dd {
  margin: 0;
  color: var(--text);
}

footer.site-footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--card-border);
  font-size: 13px;
  color: var(--text-muted);
}

footer.site-footer nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

footer.site-footer nav a {
  color: var(--text-secondary);
  text-decoration: none;
}

footer.site-footer nav a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.callout {
  background: var(--surface);
  border-left: 3px solid var(--primary);
  padding: 16px 20px;
  border-radius: 4px;
  margin: 24px 0;
  font-size: 15px;
}

.callout p:last-child {
  margin-bottom: 0;
}