@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&family=Noto+Serif+JP:wght@400;700&display=swap');

:root {
  --color-canvas: #FFFBF5;
  --color-on-canvas: #1C1917;
  --color-secondary: #78716C;
  --color-terracotta: #B5493A;
  --color-terracotta-light: #F4DDD7;
  --color-border: #E7E5E4;
  --color-surface: #FFFFFF;
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-on-canvas);
  background-color: var(--color-canvas);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

/* Header */
.site-header {
  text-align: center;
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.site-header .logo {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-terracotta);
  text-decoration: none;
}

.site-header .logo:hover {
  opacity: 0.8;
}

.site-header .page-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  margin-top: 16px;
  color: var(--color-on-canvas);
}

.site-header .last-updated {
  font-size: 14px;
  color: var(--color-secondary);
  margin-top: 8px;
}

/* Headings */
h2 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-on-canvas);
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-terracotta);
}

h3 {
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-on-canvas);
  margin-top: 32px;
  margin-bottom: 12px;
}

/* Paragraph */
p {
  margin-bottom: 16px;
}

/* Lists */
ul, ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

li {
  margin-bottom: 8px;
}

/* Table */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 15px;
}

th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: 700;
  background-color: var(--color-surface);
}

/* Links */
a {
  color: var(--color-terracotta);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Card (index page) */
.card-list {
  list-style: none;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card-list a {
  display: block;
  padding: 24px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.card-list a:hover {
  text-decoration: none;
  border-color: var(--color-terracotta);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.card-list .card-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-on-canvas);
  margin-bottom: 4px;
}

.card-list .card-desc {
  font-size: 14px;
  color: var(--color-secondary);
}

/* Footer */
.site-footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 13px;
  color: var(--color-secondary);
}

/* Responsive */
@media (max-width: 480px) {
  .container {
    padding: 24px 16px 60px;
  }

  .site-header .logo {
    font-size: 28px;
  }

  .site-header .page-title {
    font-size: 20px;
  }

  h2 {
    font-size: 18px;
    margin-top: 36px;
  }

  table {
    font-size: 14px;
  }

  th, td {
    padding: 8px 12px;
  }
}