:root {
  color-scheme: light dark;
  --background: #f5f7fa;
  --surface: #ffffff;
  --text: #172033;
  --muted: #5a6578;
  --accent: #2056a8;
  --accent-hover: #123f82;
  --border: #d8dee8;
  --focus: #d97706;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

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

a:focus-visible {
  border-radius: 0.2rem;
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 10;
  padding: 0.65rem 0.9rem;
  border-radius: 0.35rem;
  background: var(--surface);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(calc(100% - 2rem), 48rem);
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding-block: clamp(2.75rem, 8vw, 5.5rem) 2.5rem;
}

.eyebrow,
.language-label {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.25;
  text-wrap: balance;
}

h1 {
  margin: 0;
  font-size: clamp(2.35rem, 8vw, 4rem);
  letter-spacing: -0.035em;
}

h2 {
  margin: 0 0 2rem;
  font-size: clamp(1.9rem, 6vw, 2.75rem);
  letter-spacing: -0.025em;
}

h3 {
  margin: 2.2rem 0 0.65rem;
  font-size: 1.2rem;
}

p,
ul {
  margin-block: 0.7rem 1rem;
}

li + li {
  margin-top: 0.45rem;
}

.policy-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 2.5rem;
  margin: 1.5rem 0;
}

.policy-meta div {
  min-width: 12rem;
}

.policy-meta dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.policy-meta dd {
  margin: 0.15rem 0 0;
  overflow-wrap: anywhere;
  font-weight: 650;
}

.language-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.language-nav a {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--background);
  font-weight: 700;
  text-decoration: none;
}

main {
  padding-block: clamp(3rem, 7vw, 5rem);
}

.policy {
  scroll-margin-top: 1rem;
}

hr {
  margin-block: clamp(3.5rem, 8vw, 6.5rem);
  border: 0;
  border-top: 1px solid var(--border);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding-block: 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
  overflow-wrap: anywhere;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #101521;
    --surface: #171e2c;
    --text: #edf1f7;
    --muted: #aeb8c8;
    --accent: #8bb8ff;
    --accent-hover: #b7d3ff;
    --border: #354052;
    --focus: #fbbf24;
  }
}

@media (max-width: 30rem) {
  .shell {
    width: min(calc(100% - 1.25rem), 48rem);
  }

  .policy-meta {
    display: block;
  }

  .policy-meta div + div {
    margin-top: 0.75rem;
  }

  ul {
    padding-left: 1.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}