:root {
  --paper: #ffffff;
  --ink: #1a1625;
  --ink-soft: #5c5468;
  --line: #e3ddef;
  --accent: #6750a4;
  --accent-soft: #f1edfa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0b0710;
    --ink: #f3effa;
    --ink-soft: #b4a9cc;
    --line: #241d38;
    --accent: #8b5cf6;
    --accent-soft: #1a1428;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Noto Sans JP", Meiryo, sans-serif;
  line-height: 1.8;
}

.legal-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

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

.legal-nav a:first-child {
  color: var(--ink);
  font-weight: 700;
}

.legal-nav a:hover {
  text-decoration: underline;
}

.legal-doc {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.legal-home {
  text-align: center;
  padding-top: 80px;
}

h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 6px;
}

.legal-date {
  color: var(--ink-soft);
  font-size: 14px;
  margin: 0 0 32px;
}

h2 {
  font-size: 18px;
  font-weight: 700;
  margin: 36px 0 12px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

p, li {
  font-size: 15.5px;
  color: var(--ink);
}

ul, ol {
  padding-left: 1.4em;
}

li {
  margin-bottom: 8px;
}

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

.legal-links {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.legal-links a {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 8px;
  background: var(--accent-soft);
  text-decoration: none;
  font-weight: 600;
}

.legal-translation-note {
  font-size: 13px;
  font-style: italic;
  color: var(--ink-soft);
  margin: -8px 0 32px;
}

.lang-toggle {
  position: fixed;
  top: 16px;
  right: 20px;
  z-index: 10;
}

.lang-toggle button {
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--accent-soft);
  color: var(--accent);
  cursor: pointer;
}

[data-lang] {
  display: none;
}

[data-lang].active {
  display: block;
}

nav [data-lang] {
  display: none;
}

nav [data-lang].active {
  display: contents;
}