:root {
  color-scheme: light dark;
  --bg: #f7f8ff;
  --surface: #ffffff;
  --surface-soft: #eef1ff;
  --text: #182033;
  --muted: #566078;
  --border: #d8def0;
  --primary: #3157c8;
  --primary-strong: #2444a6;
  --accent: #7149bd;
  --focus: #c64212;
  --shadow: 0 16px 42px rgba(42, 55, 112, 0.1);
  --radius: 1rem;
  --content: 72rem;
  --reading: 50rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 1rem;
}

body {
  min-width: 18rem;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
}

a {
  color: var(--primary);
  text-decoration-thickness: 0.1em;
  text-underline-offset: 0.18em;
}

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

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  border-radius: 0.2rem;
  outline: 0.2rem solid var(--focus);
  outline-offset: 0.2rem;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  border-radius: 0.5rem;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
  transform: translateY(-180%);
}

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

.site-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  background: linear-gradient(125deg, #204bb8 0%, #553db0 58%, #7a3f9f 100%);
  color: #fff;
}

.header-inner,
.main-layout,
.footer-inner {
  width: min(calc(100% - 2rem), var(--content));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.05rem;
}

.brand {
  color: #fff;
  font-size: 1.15rem;
  font-weight: 780;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.header-link {
  color: #fff;
  font-weight: 650;
}

.header-link:hover {
  color: #fff;
}

.main-layout {
  padding-block: clamp(2rem, 6vw, 4.5rem);
}

.hero {
  max-width: 57rem;
  padding-block: clamp(1rem, 4vw, 3rem);
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.2;
  text-wrap: balance;
}

h1 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2.25rem, 8vw, 4.7rem);
  letter-spacing: -0.045em;
}

.policy h1,
.language-page h1 {
  max-width: 24ch;
  font-size: clamp(2rem, 7vw, 3.65rem);
}

h2 {
  margin: 0 0 0.8rem;
  font-size: clamp(1.35rem, 4vw, 1.8rem);
  letter-spacing: -0.02em;
}

h3 {
  margin: 1.5rem 0 0.5rem;
  font-size: 1.08rem;
}

p,
ul,
ol {
  margin-block: 0 1rem;
}

.lede {
  max-width: 43rem;
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: clamp(1.1rem, 3vw, 1.3rem);
}

.actions,
.language-nav,
.language-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.actions {
  margin-top: 1.6rem;
}

.button,
.language-nav a,
.language-grid a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.button-primary {
  border-color: transparent;
  background: linear-gradient(120deg, var(--primary), var(--accent));
  color: #fff;
}

.button-primary:hover {
  color: #fff;
  filter: brightness(1.08);
}

.language-nav {
  margin-block: 1.4rem 0;
}

.language-nav a[aria-current="page"] {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-block: 1.5rem;
}

.card,
.policy-section,
.toc,
.notice {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card {
  padding: clamp(1.25rem, 4vw, 2rem);
}

.card p:last-child,
.policy-section > :last-child,
.toc > :last-child,
.notice > :last-child {
  margin-bottom: 0;
}

.language-grid {
  margin-top: 1.25rem;
}

.language-grid a {
  flex: 1 1 12rem;
  min-height: 4rem;
}

.language-grid a.recommended {
  border-color: var(--primary);
  background: var(--surface-soft);
}

.policy {
  max-width: var(--reading);
}

.policy-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-block: 1.25rem;
  color: var(--muted);
}

.policy-meta p {
  margin: 0;
}

.toc,
.notice,
.policy-section {
  padding: clamp(1.15rem, 4vw, 1.75rem);
  margin-block: 1rem;
}

.notice {
  border-left: 0.3rem solid var(--accent);
  background: var(--surface-soft);
}

.toc ol {
  columns: 2 15rem;
  padding-left: 1.3rem;
}

.toc li {
  margin-bottom: 0.35rem;
  break-inside: avoid;
}

.plain-list {
  padding-left: 1.25rem;
}

code {
  overflow-wrap: anywhere;
  color: inherit;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.91em;
}

.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-block: 1.5rem;
}

.footer-inner p {
  margin: 0;
}

@media (max-width: 42rem) {
  .grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .toc ol {
    columns: 1;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101321;
    --surface: #181d31;
    --surface-soft: #202641;
    --text: #f3f5ff;
    --muted: #b9c1d9;
    --border: #39425f;
    --primary: #9bb3ff;
    --primary-strong: #b4c4ff;
    --accent: #d3a8ff;
    --focus: #ffb15c;
    --shadow: 0 16px 42px rgba(0, 0, 0, 0.24);
  }

  .site-header {
    background: linear-gradient(125deg, #17378c 0%, #432f8e 58%, #622f80 100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  :root {
    --bg: #fff;
    --surface: #fff;
    --text: #000;
    --muted: #333;
    --border: #bbb;
    --shadow: none;
  }

  body {
    font-size: 11pt;
  }

  .site-header,
  .site-footer,
  .skip-link,
  .language-nav,
  .actions {
    display: none;
  }

  .main-layout {
    width: 100%;
    padding: 0;
  }

  .policy-section,
  .toc,
  .notice {
    break-inside: avoid;
    box-shadow: none;
  }

  a {
    color: #000;
  }
}