:root {
  --text: #1f1a24;
  --muted: #6b6475;
  --link: #5b3fa0;
  --border: #e4dfea;
  --bg: #ffffff;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #ece8f1;
    --muted: #a8a0b3;
    --link: #c5b0ff;
    --border: #3a3442;
    --bg: #17141b;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    system-ui, -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

main,
.site-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

main {
  padding-top: 32px;
  padding-bottom: 48px;
}

header {
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
  padding-bottom: 16px;
}

.site-name {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.08em;
}

h1 {
  margin: 4px 0 0;
  font-size: 24px;
  line-height: 1.4;
}

.updated {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

section + section {
  margin-top: 32px;
}

h2 {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.5;
}

p {
  margin: 0 0 1em;
}

/* 規約の本文。改行・連続スペース・行頭の字下げを原稿のまま残す（アプリの Text と同じ見え方。<br> は使わない） */
.body {
  white-space: pre-wrap;
}

a {
  color: var(--link);
}

.doc-list {
  padding-left: 1.2em;
}

.doc-list li + li {
  margin-top: 8px;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  padding-bottom: 32px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.site-footer p {
  margin: 8px 0 0;
}