:root {
  color-scheme: light;
  --bg: oklch(98.4% 0.004 250);
  --surface: oklch(100% 0 0);
  --surface-muted: oklch(96.5% 0.006 250);
  --ink: oklch(22% 0.025 255);
  --text: oklch(32% 0.025 255);
  --muted: oklch(45% 0.022 255);
  --border: oklch(88% 0.012 250);
  --accent: oklch(43% 0.12 25);
  --accent-muted: oklch(95% 0.025 25);
  --info: oklch(94.5% 0.025 220);
  --radius: 10px;
  --measure: 72ch;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.58;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible,
.button:focus-visible {
  outline: 3px solid oklch(72% 0.12 25 / 0.45);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: oklch(100% 0 0 / 0.94);
  backdrop-filter: blur(10px);
}

.nav {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

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

.page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 44px 0 56px;
}

.intro {
  max-width: var(--measure);
  margin-bottom: 28px;
}

.page-label {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 14px;
}

h1,
h2,
h3 {
  color: var(--ink);
  line-height: 1.25;
  text-wrap: balance;
}

h1 {
  margin: 0;
  font-size: 36px;
  letter-spacing: -0.02em;
}

h2 {
  margin: 30px 0 8px;
  font-size: 22px;
}

h3 {
  margin: 20px 0 6px;
  font-size: 17px;
}

p {
  max-width: var(--measure);
  margin: 10px 0;
  text-wrap: pretty;
}

.lead {
  margin-top: 14px;
  color: var(--text);
  font-size: 19px;
}

.muted {
  color: var(--muted);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 13px;
  border: 1px solid var(--accent);
  border-radius: 7px;
  background: var(--accent);
  color: white;
  font-weight: 650;
  text-decoration: none;
}

.button.secondary {
  border-color: var(--border);
  background: var(--surface);
  color: var(--ink);
}

.button:hover {
  text-decoration: none;
}

.notice {
  max-width: var(--measure);
  margin: 22px 0;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--accent-muted);
}

.panel {
  max-width: var(--measure);
  margin: 18px 0;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.facts {
  display: grid;
  max-width: var(--measure);
  margin: 22px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}

.fact-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  padding: 13px 16px;
  border-top: 1px solid var(--border);
}

.fact-row:first-child {
  border-top: 0;
}

.fact-row dt {
  color: var(--ink);
  font-weight: 700;
}

.fact-row dd {
  margin: 0;
  color: var(--text);
}

.doc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  align-items: start;
}

.doc-body {
  min-width: 0;
}

.doc-body section {
  max-width: var(--measure);
  padding-top: 18px;
  margin-top: 18px;
  border-top: 1px solid var(--border);
}

.doc-body section:first-of-type {
  padding-top: 0;
  margin-top: 0;
  border-top: 0;
}

.summary {
  position: sticky;
  top: 88px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.summary h2 {
  margin: 0 0 10px;
  font-size: 16px;
}

ul,
ol {
  max-width: var(--measure);
  margin: 10px 0 16px;
  padding-left: 24px;
}

li {
  margin: 5px 0;
}

code {
  padding: 2px 5px;
  border-radius: 5px;
  background: var(--surface-muted);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.94em;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 860px) {
  .doc-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .summary {
    position: static;
    order: -1;
  }
}

@media (max-width: 640px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 12px 0;
    gap: 8px;
  }

  .page {
    padding-top: 30px;
  }

  h1 {
    font-size: 30px;
  }

  .lead {
    font-size: 17px;
  }

  .fact-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}