/* isoAi 規約ページ共通スタイル(welcome と同じトーン) */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #07080a;
  --ink: #f0f0f3;
  --ink-dim: rgba(240,240,243,0.72);
  --ink-faint: rgba(240,240,243,0.56);
  --line: rgba(240,240,243,0.10);
  --accent: #d97757;
  --serif: 'Noto Serif JP', 'Hina Mincho', 'Yu Mincho', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Noto Sans JP', system-ui, sans-serif;
}
html { scroll-behavior: smooth; overflow-x: hidden; max-width: 100vw; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  max-width: 100vw;
}
input, textarea, select { font-size: 16px; min-height: 44px; }
button, a.btn { min-height: 44px; }
@media (max-width: 640px) {
  table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  h1, h2, h3 { word-break: keep-all; overflow-wrap: anywhere; }
}
a { color: inherit; text-decoration: none; }

nav.top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  padding: 22px 40px;
  display: flex; align-items: center; justify-content: space-between;
  transition: background 0.4s, padding 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
}
nav.top.scrolled {
  background: rgba(7,8,10,0.85);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom-color: var(--line);
  padding: 14px 40px;
}
nav.top .brand img {
  height: 30px;
  width: auto;
  display: block;
}
nav.top.scrolled .brand img { height: 26px; }
nav.top .links { display: flex; gap: 28px; align-items: center; font-size: 12.5px; letter-spacing: 0.08em; color: var(--ink-dim); }
nav.top .links a:hover { color: var(--ink); }
nav.top .cta {
  border: 1px solid var(--line);
  padding: 9px 22px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.12em;
}
nav.top .cta:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }

main.legal-page {
  max-width: 820px;
  margin: 0 auto;
  padding: 160px 32px 100px;
}
.legal-head {
  border-bottom: 1px solid var(--line);
  padding-bottom: 40px;
  margin-bottom: 56px;
}
.legal-head .tag {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.45em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.legal-head h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1.2;
  margin-bottom: 22px;
  letter-spacing: -0.01em;
}
.legal-head .meta {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-dim);
  line-height: 1.85;
}

article.legal-body { font-family: var(--sans); font-size: 14px; color: var(--ink-dim); line-height: 1.95; }
article.legal-body h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(18px, 2.4vw, 22px);
  color: var(--ink);
  letter-spacing: -0.005em;
  margin: 56px 0 18px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
article.legal-body h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
article.legal-body p { margin-bottom: 16px; }
article.legal-body p + h2 { margin-top: 56px; }
article.legal-body b { color: var(--ink); font-weight: 500; }

.legal-foot {
  margin-top: 70px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  text-align: center;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
  line-height: 1.95;
}

footer.bottom {
  border-top: 1px solid var(--line);
  padding: 48px 40px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}
footer.bottom .foot-brand {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}
footer.bottom .foot-meta {
  font-family: var(--sans);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}
footer.bottom .foot-links { display: flex; gap: 24px; }
footer.bottom .foot-links a {
  font-family: var(--sans);
  font-size: 11.5px;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  transition: color 0.2s;
}
footer.bottom .foot-links a:hover { color: var(--ink); }

@media (max-width: 820px) {
  nav.top { padding: 16px 22px; }
  nav.top.scrolled { padding: 12px 22px; }
  nav.top .links { gap: 16px; }
  nav.top .links a:not(.cta) { display: none; }
  main.legal-page { padding: 130px 22px 70px; }
  footer.bottom { padding: 36px 22px; flex-direction: column; align-items: flex-start; text-align: left; }
}

/* ★ 2026-05-22 礒貝CEO 指示「スマホで読みやすく」対応:小型スマホ(iPhone SE / 13 mini / 14 等)向け最適化
   本文フォント・行間・見出し間隔を圧縮、長文(規約 39KB / プライバシー 21KB / 免責 19KB)でも目が疲れにくい配置に */
@media (max-width: 560px) {
  nav.top { padding: 14px 16px; }
  nav.top.scrolled { padding: 10px 16px; }
  nav.top .brand img { height: 26px; }
  nav.top.scrolled .brand img { height: 22px; }
  nav.top .cta { padding: 7px 16px; font-size: 11px; letter-spacing: 0.08em; }

  main.legal-page { padding: 110px 18px 60px; }

  .legal-head { padding-bottom: 28px; margin-bottom: 36px; }
  .legal-head .tag { font-size: 10px; letter-spacing: 0.35em; margin-bottom: 10px; }
  .legal-head h1 { font-size: 26px; line-height: 1.35; margin-bottom: 16px; letter-spacing: 0; }
  .legal-head .meta { font-size: 12px; line-height: 1.75; }

  article.legal-body { font-size: 13.5px; line-height: 1.85; }
  article.legal-body h2 {
    font-size: 16.5px;
    margin: 40px 0 14px;
    padding-top: 18px;
    line-height: 1.5;
  }
  article.legal-body p + h2 { margin-top: 40px; }
  article.legal-body p { margin-bottom: 14px; }
  /* インライン箇条書き(<br>区切りの長い列挙)が画面端で詰まらないよう、左右余白を取る */
  article.legal-body { word-break: break-word; overflow-wrap: anywhere; }
  /* li が使われている場合の左インデント圧縮 */
  article.legal-body ul, article.legal-body ol { padding-left: 22px; margin: 8px 0 16px; }
  article.legal-body li { margin-bottom: 8px; line-height: 1.8; }

  .legal-foot {
    margin-top: 50px;
    padding-top: 24px;
    font-size: 11px;
    line-height: 1.85;
    letter-spacing: 0.04em;
  }

  footer.bottom { padding: 28px 18px 24px; gap: 14px; }
  footer.bottom .foot-brand { font-size: 14px; }
  footer.bottom .foot-meta { font-size: 10px; }
  footer.bottom .foot-links { gap: 14px; flex-wrap: wrap; }
  footer.bottom .foot-links a { font-size: 11px; }
}

/* さらに狭い画面(iPhone SE 1st gen: 320px 等)用の最終調整 */
@media (max-width: 360px) {
  main.legal-page { padding: 100px 14px 50px; }
  .legal-head h1 { font-size: 22px; }
  article.legal-body { font-size: 13px; }
  article.legal-body h2 { font-size: 15.5px; }
}