:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #5a5a5a;
  --accent: #2b6cb0;
  --border: #e2e2e2;
  --card-bg: #f7f7f8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #eaeaea;
    --muted: #a0a0a0;
    --accent: #6fa8dc;
    --border: #2a2d33;
    --card-bg: #1c1f24;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
}
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}
header {
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--border);
  flex-shrink: 0;
}
h1 {
  font-size: 1.6rem;
  margin: 0 0 8px;
}
.subtitle {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0;
}
section {
  margin-bottom: 40px;
}
h2 {
  font-size: 1.1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin-bottom: 16px;
}
.apps {
  display: grid;
  gap: 12px;
}
.app-card {
  border: 1px solid var(--border);
  background: var(--card-bg);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  text-decoration: none;
  color: inherit;
}
.app-card .icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  object-fit: cover;
  flex-shrink: 0;
}
.app-card .body {
  min-width: 0;
  flex: 1;
}
.app-card .name {
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--fg);
}
.app-card .desc {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0;
  line-height: 1.5;
}
.contact a {
  color: var(--accent);
}
footer {
  color: var(--muted);
  font-size: 0.8rem;
  margin-top: 60px;
}

/* アプリ個別トップページ */
.back-link {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--accent);
  font-size: 0.9rem;
  text-decoration: none;
}
.app-hero {
  text-align: center;
  padding: 24px 0 8px;
}
.app-hero .icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  object-fit: cover;
  border: 1px solid var(--border);
}
.app-hero h1 {
  margin: 20px 0 8px;
}
.app-hero .desc {
  color: var(--muted);
  font-size: 0.9rem;
  max-width: 480px;
  margin: 0 auto 20px;
}
.badge {
  display: inline-block;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.app-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 320px;
  margin: 0 auto;
}
.app-links a {
  display: block;
  border: 1px solid var(--border);
  background: var(--card-bg);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
}

/* プライバシーポリシー・リリースノートなどの文書ページ */
body.doc main {
  max-width: 760px;
}
body.doc h1 {
  font-size: 1.5rem;
  margin-bottom: 4px;
}
body.doc h2 {
  font-size: 1.1rem;
  border-bottom: none;
  border-left: 4px solid var(--accent);
  padding-left: 10px;
  padding-bottom: 0;
  margin-top: 2.2em;
  margin-bottom: 0.8em;
}
body.doc ul {
  padding-left: 1.4em;
}
body.doc li {
  margin-bottom: 0.5em;
}
body.doc a {
  color: var(--accent);
}
body.doc .updated,
body.doc .date,
body.doc .empty {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2em;
}
body.doc .version {
  font-size: 1.05rem;
  font-weight: 700;
  margin-top: 2em;
  margin-bottom: 0.6em;
}
body.doc .lang-divider {
  margin: 3.5em 0;
  border: none;
  border-top: 2px solid var(--border);
}
body.doc .contact {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 14px 18px;
  margin-top: 1em;
}