:root {
  color-scheme: light dark;
  --bg: #f6f4ef;
  --fg: #1a1a1a;
  --muted: #5c5c5c;
  --card: #ffffff;
  --border: #ddd6c8;
  --accent: #2f5d50;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141414;
    --fg: #f2f2f2;
    --muted: #a8a8a8;
    --card: #1f1f1f;
    --border: #333333;
    --accent: #7ec8b0;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family:
    'Hiragino Sans',
    'Hiragino Kaku Gothic ProN',
    'Yu Gothic UI',
    sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  max-width: 42rem;
  margin: 0 auto;
  padding: 3rem 1.25rem 2rem;
  width: 100%;
}

.site-header {
  margin-bottom: 2rem;
}

.site-title {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  letter-spacing: 0.02em;
}

.lead {
  margin: 0;
  color: var(--muted);
}

.section {
  margin-bottom: 2.5rem;
}

.section-title {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.section p {
  margin: 0 0 0.75rem;
}

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

.meta {
  margin: 0.75rem 0 0;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--card);
  font-size: 0.9rem;
  color: var(--muted);
}

.meta dt {
  font-weight: 600;
  color: var(--fg);
  margin: 0 0 0.15rem;
}

.meta dd {
  margin: 0 0 0.65rem;
}

.meta dd:last-child {
  margin-bottom: 0;
}

.app-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.app-card {
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--card);
  padding: 1rem 1.25rem;
}

.app-card-heading {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.35rem;
}

.app-logo {
  display: block;
  flex-shrink: 0;
  border-radius: 0.25rem;
}

.app-card h3 {
  margin: 0;
  font-size: 1.1rem;
}

.app-card p {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.feature-list {
  margin: 0 0 0.75rem;
  padding-left: 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.feature-list li {
  margin-bottom: 0.25rem;
}

a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.25rem;
  margin-bottom: 0.5rem;
}

.site-footer p {
  margin: 0;
  font-size: 0.85rem;
}

.policy-section {
  margin-bottom: 1.75rem;
}

.policy-section h2 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.policy-section p {
  margin: 0 0 0.65rem;
}

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

.policy-updated {
  margin: 0 0 2rem;
  font-size: 0.9rem;
  color: var(--muted);
}