:root {
  color-scheme: dark;
  --background: #0b1020;
  --surface: #121a2e;
  --surface-raised: #18233d;
  --border: #2b3856;
  --text: #f7f9ff;
  --muted: #aeb9d2;
  --accent: #f5c451;
  --accent-ink: #201804;
  --success: #6ee7b7;
  --danger: #fca5a5;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
  scroll-behavior: smooth;
}

body {
  min-width: 280px;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(
      circle at 50% -20%,
      #24345c 0,
      transparent 42rem
    ),
    var(--background);
  font-size: 16px;
  line-height: 1.65;
}

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

a:hover {
  text-decoration-thickness: 0.14em;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.site-shell {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgb(11 16 32 / 88%);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.site-header__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
}

.brand {
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 18px;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 750;
  text-decoration: none;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  color: var(--text);
}

.language-switch {
  display: flex;
  gap: 4px;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--background);
}

.language-switch a {
  padding: 4px 8px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 850;
  text-decoration: none;
}

.language-switch a:hover {
  color: var(--text);
}

.language-switch a[aria-current="true"] {
  color: var(--accent-ink);
  background: var(--accent);
}

main {
  padding: 64px 0 80px;
}

.hero,
.document {
  border: 1px solid var(--border);
  border-radius: 24px;
  background: rgb(18 26 46 / 94%);
  box-shadow: 0 24px 70px rgb(0 0 0 / 24%);
}

.hero {
  padding: clamp(28px, 7vw, 72px);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2rem, 7vw, 4.5rem);
  letter-spacing: -0.04em;
}

.lead {
  max-width: 720px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2.5vw, 1.18rem);
}

.card-grid {
  display: grid;
  grid-template-columns:
    repeat(auto-fit, minmax(min(100%, 230px), 1fr));
  gap: 16px;
  margin-top: 32px;
}

.card {
  display: grid;
  gap: 10px;
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 18px;
  color: var(--text);
  background: var(--surface-raised);
  text-decoration: none;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card strong {
  font-size: 1.05rem;
}

.card span {
  color: var(--muted);
  font-size: 0.91rem;
}

.card b {
  align-self: end;
  color: var(--accent);
  font-size: 0.88rem;
}

.document {
  padding: clamp(24px, 6vw, 60px);
}

.document__header {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.document h1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
}

.updated {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.document__content {
  max-width: 760px;
}

.document section {
  padding-top: 32px;
}

.document h2 {
  margin: 0 0 12px;
  font-size: 1.35rem;
}

.document h3 {
  margin: 24px 0 8px;
  font-size: 1rem;
}

.document p,
.document li {
  color: var(--muted);
}

.document strong {
  color: var(--text);
}

.document ul,
.document ol {
  padding-left: 1.4rem;
}

.document li + li {
  margin-top: 8px;
}

.callout {
  margin: 24px 0 0;
  padding: 20px;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  background: var(--surface-raised);
}

.callout p:first-child {
  margin-top: 0;
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout--warning {
  border-left-color: var(--danger);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 10px 18px;
  border: 1px solid var(--accent);
  border-radius: 12px;
  color: var(--accent-ink);
  background: var(--accent);
  font-weight: 900;
  text-align: center;
  text-decoration: none;
}

.button--secondary {
  color: var(--text);
  background: transparent;
}

.data-table {
  width: 100%;
  margin-top: 18px;
  border-collapse: collapse;
  font-size: 0.91rem;
}

.data-table th,
.data-table td {
  padding: 14px;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--text);
  background: var(--surface-raised);
}

.data-table td {
  color: var(--muted);
}

.site-footer {
  padding: 28px 0 40px;
  border-top: 1px solid var(--border);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
  color: var(--muted);
  font-size: 0.82rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 680px) {
  .site-shell {
    width: min(100% - 20px, 960px);
  }

  .site-header__inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .site-header__actions {
    width: 100%;
    align-items: flex-start;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
  }

  main {
    padding: 24px 0 48px;
  }

  .hero,
  .document {
    border-radius: 18px;
  }

  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table th,
  .data-table td {
    display: block;
  }

  .data-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  .data-table tr + tr {
    margin-top: 12px;
  }

  .data-table td::before {
    display: block;
    margin-bottom: 4px;
    color: var(--text);
    font-weight: 850;
    content: attr(data-label);
  }
}