/* Evolith legal & support pages — monochrome, bilingual, theme-aware */

@import url("https://fonts.googleapis.com/css2?family=Jost:wght@400;500;600&display=swap");

:root {
  --bg: #fefefe;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --line: #e6e6e6;
  --card: #f6f6f6;
  --accent: #1a1a1a;
  --link: #1a1a1a;
  --maxw: 44rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111111;
    --fg: #ededed;
    --muted: #9a9a9a;
    --line: #2a2a2a;
    --card: #1b1b1b;
    --accent: #ededed;
    --link: #ededed;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  line-height: 1.7;
  font-size: 17px;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 5rem;
}

/* Header */
header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.25rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-family: "Jost", -apple-system, sans-serif;
  font-weight: 600;
  letter-spacing: 0.18em;
  font-size: 1.05rem;
  text-transform: uppercase;
  color: var(--fg);
  text-decoration: none;
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  font-size: 0.8rem;
}

.lang-toggle button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 0.35rem 0.8rem;
  cursor: pointer;
  font: inherit;
  letter-spacing: 0.04em;
}

.lang-toggle button[aria-pressed="true"] {
  background: var(--accent);
  color: var(--bg);
}

/* Typography */
h1 {
  font-size: 1.9rem;
  line-height: 1.25;
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.2rem;
  margin: 2.4rem 0 0.6rem;
  letter-spacing: -0.005em;
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 2rem;
}

p, li { color: var(--fg); }

a { color: var(--link); text-underline-offset: 2px; }

ul { padding-left: 1.2rem; }
li { margin: 0.25rem 0; }

strong { font-weight: 600; }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2.5rem 0;
}

/* Landing cards */
.cards {
  display: grid;
  gap: 1rem;
  margin: 2rem 0;
}

.card {
  display: block;
  padding: 1.25rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
  text-decoration: none;
  color: var(--fg);
  transition: border-color 0.15s ease;
}

.card:hover { border-color: var(--muted); }

.card h3 { margin: 0 0 0.25rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* Footer */
footer.site {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
}

footer.site a { color: var(--muted); }

/* Language switching */
[data-lang="en"] .only-ja { display: none; }
[data-lang="ja"] .only-en { display: none; }