:root {
  --color-bg: #faf7f2;
  --color-text: #2d2a26;
  --color-accent: #b9603f;
  --color-muted: #6b655c;
  --max-width: 760px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  border-bottom: 1px solid #e3ddd2;
  padding: 1.5rem 0;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-title {
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--color-accent);
  text-decoration: none;
}

.site-nav a {
  margin-left: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
}

.site-nav a:hover {
  text-decoration: underline;
}

main {
  padding: 2.5rem 0 3rem;
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.3rem;
  margin-top: 2rem;
}

.disclosure {
  background: #fff3e6;
  border: 1px solid #f0d9b5;
  border-radius: 6px;
  padding: 1rem 1.25rem;
  font-size: 0.95rem;
  margin: 1.5rem 0;
}

.article-list {
  list-style: none;
  padding: 0;
}

.article-list li {
  padding: 1rem 0;
  border-bottom: 1px solid #e3ddd2;
}

.article-list a {
  color: var(--color-accent);
  font-weight: bold;
  text-decoration: none;
}

.article-list a:hover {
  text-decoration: underline;
}

.site-footer {
  border-top: 1px solid #e3ddd2;
  padding: 1.5rem 0;
  font-size: 0.85rem;
  color: var(--color-muted);
}