:root {
  --bg: #fafafc;
  --surface: #ffffff;
  --text: #111827;
  --muted: #4b5563;
  --border: #e5e7eb;
  --brand: #4338ca;
  --brand-soft: #eef0fd;
  --accent: #b45309;
  --link: #4338ca;
  --code-bg: #f3f4f6;
  --radius: 14px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0e18;
    --surface: #141729;
    --text: #e5e7eb;
    --muted: #a1a7b6;
    --border: #262b45;
    --brand: #a5b4fc;
    --brand-soft: #1b1f3a;
    --accent: #fbbf24;
    --link: #a5b4fc;
    --code-bg: #1b1f33;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--link);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

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

a:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

code {
  font-family: ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 0.12em 0.38em;
  border-radius: 6px;
  white-space: nowrap;
}

code.url {
  white-space: normal;
  overflow-wrap: anywhere;
}

.wrap {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 16px;
  top: 12px;
  background: var(--surface);
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 10;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.site-nav {
  display: flex;
  gap: 4px 18px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 6px 0;
}

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

main {
  flex: 1;
  padding: 56px 0 72px;
}

/* Home */
.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
}

.hero .lead {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 62ch;
  margin: 0;
}

.section {
  margin-top: 56px;
}

.section > h2 {
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 420px), 1fr));
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.card-head img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  flex: none;
}

.card h3 {
  font-size: 1.15rem;
  margin: 0;
  line-height: 1.3;
}

.card .tag {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--muted);
}

.card p {
  margin: 0 0 12px;
}

.facts {
  list-style: none;
  padding: 0;
  margin: 16px 0;
  display: grid;
  gap: 6px;
  font-size: 0.95rem;
  color: var(--muted);
}

.facts strong {
  color: var(--text);
  font-weight: 600;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 0.95rem;
  font-weight: 500;
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin-top: 4px;
}

.glance {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: 16px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.glance li {
  background: var(--brand-soft);
  border-radius: var(--radius);
  padding: 18px 20px;
  font-size: 0.97rem;
}

.glance strong {
  display: block;
  margin-bottom: 4px;
}

/* Legal pages */
.prose {
  max-width: 72ch;
}

.prose h1 {
  font-size: clamp(1.9rem, 4.5vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin: 0 0 8px;
}

.prose .updated {
  color: var(--muted);
  margin: 0 0 32px;
  font-size: 0.95rem;
}

.prose h2 {
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  margin: 44px 0 12px;
  padding-top: 8px;
  scroll-margin-top: 16px;
}

.prose h3 {
  font-size: 1.05rem;
  margin: 28px 0 8px;
}

.prose ul,
.prose ol {
  padding-left: 1.3em;
}

.prose li {
  margin: 6px 0;
}

.prose li::marker {
  color: var(--muted);
}

.callout {
  background: var(--brand-soft);
  border-left: 4px solid var(--brand);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 20px 0;
}

.callout p {
  margin: 0;
}

.callout p + p {
  margin-top: 10px;
}

.toc {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px 22px;
  margin: 0 0 8px;
  font-size: 0.97rem;
}

.toc ol {
  margin: 6px 0 0;
}

.caps {
  text-transform: uppercase;
  font-size: 0.93rem;
  letter-spacing: 0.01em;
}

.notfound {
  text-align: center;
  padding: 40px 0;
}

.notfound h1 {
  font-size: clamp(2rem, 6vw, 3rem);
  margin: 0 0 8px;
  letter-spacing: -0.03em;
}

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

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.93rem;
  color: var(--muted);
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 22px;
  padding-bottom: 22px;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

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

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

.site-footer p {
  margin: 0;
}

@media (max-width: 560px) {
  body {
    font-size: 1rem;
  }

  main {
    padding: 36px 0 56px;
  }

  .site-header .wrap {
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .card {
    padding: 20px;
  }

  .section {
    margin-top: 44px;
  }
}