:root {
  --accent: #c8b9f5;
  --accent-deep: #9e8aeb;
  --blush: #fcdce0;
  --cloud: #ebeffc;
  --cream: #fff7ed;
  --ink: #2d243f;
  --ink-soft: #5b536c;
  --stroke: rgba(255,255,255,0.5);
}

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

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  color: var(--ink);
  background: linear-gradient(135deg, var(--cloud), var(--blush) 50%, var(--accent) 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.hero {
  max-width: 920px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-size: 22px;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.nav nav a {
  margin-left: 18px;
  text-decoration: none;
  font-size: 14px;
  color: var(--ink-soft);
  transition: color 0.2s;
}

.nav nav a:hover { color: var(--accent-deep); }

.copy {
  margin-top: 12vh;
  text-align: center;
}

h1 {
  font-size: clamp(48px, 9vw, 96px);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.sub {
  margin-top: 28px;
  font-size: 18px;
  font-family: -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  color: var(--ink-soft);
  line-height: 1.6;
}

.sub.jp { font-family: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif; margin-top: 18px; }

.cta {
  display: inline-block;
  margin-top: 40px;
  padding: 14px 28px;
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(20px);
  border: 1px solid var(--stroke);
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink);
  font-size: 15px;
  font-family: system-ui, sans-serif;
  box-shadow: 0 8px 32px rgba(158, 138, 235, 0.2);
}

footer {
  text-align: center;
  font-size: 12px;
  color: var(--ink-soft);
  font-family: system-ui, sans-serif;
  letter-spacing: 0.04em;
}

.legal {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 24px;
  font-family: system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.legal h1 {
  font-size: 48px;
  font-weight: 300;
  margin-bottom: 8px;
}

.legal h2 {
  font-size: 20px;
  margin-top: 32px;
  margin-bottom: 8px;
}

.legal p, .legal ul { margin: 12px 0; color: var(--ink-soft); }
.legal a { color: var(--accent-deep); }
.legal .meta { font-size: 13px; color: var(--ink-soft); margin-bottom: 32px; }

.legal-toc {
  margin-bottom: 48px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(45, 36, 63, 0.08);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.legal-toc-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.lang-toggle {
  display: inline-flex;
  padding: 4px;
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(20px);
  border: 1px solid var(--stroke);
  border-radius: 999px;
  box-shadow: 0 4px 16px rgba(158, 138, 235, 0.12);
}
.lang-toggle button {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 6px 14px;
  font: inherit;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.lang-toggle button:hover { color: var(--accent-deep); }
.lang-toggle button.active {
  background: var(--accent-deep);
  color: #fff;
  box-shadow: 0 2px 10px rgba(158, 138, 235, 0.35);
}

body[data-lang="ja"] [lang="en"] { display: none; }
body[data-lang="en"] [lang="ja"] { display: none; }
.legal-toc .brand-link {
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  font-size: 22px;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--ink);
}
.legal-toc nav { display: flex; flex-wrap: wrap; gap: 18px; }
.legal-toc nav a {
  font-size: 14px;
  color: var(--ink-soft);
  text-decoration: none;
}
.legal-toc nav a:hover { color: var(--accent-deep); }

.legal section { scroll-margin-top: 24px; }
.legal section + .legal-sep,
.legal hr.legal-sep {
  border: 0;
  border-top: 1px solid rgba(45, 36, 63, 0.08);
  margin: 56px 0;
}
.legal-back { margin-top: 48px; }