:root {
  color-scheme: dark;
  --bg: #050505;
  --panel: #101010;
  --fg: #f5f5f3;
  --muted: #bdbdb8;
  --line: #2a2a2a;
  --accent: #ffffff;
  --light-bg: #ffffff;
  --light-fg: #111111;
  --light-muted: #5f5f5b;
  --light-line: #dddddd;
  --max: 1100px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.theme-dark {
  background: var(--bg);
  color: var(--fg);
}

body:not(.theme-dark) {
  background: var(--light-bg);
  color: var(--light-fg);
}

a {
  color: inherit;
  text-underline-offset: 0.18em;
}

.shell {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 20px 48px;
}

.shell-page {
  max-width: 860px;
}

.hero-home {
  padding: 44px 0 56px;
  border-bottom: 1px solid var(--line);
}

.eyebrow,
.kicker {
  margin: 0 0 14px;
  font-size: 0.77rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.02;
}

h1 {
  max-width: 11ch;
  font-size: clamp(3rem, 8vw, 6.2rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 700;
}

h3 {
  font-size: 1.12rem;
  font-weight: 650;
}

.lead {
  max-width: 48rem;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-actions a,
.back-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 16px;
  border: 1px solid currentColor;
  text-decoration: none;
}

.hero-actions a:hover,
.hero-actions a:focus-visible,
.back-link:hover,
.back-link:focus-visible,
.card:hover,
.card:focus-visible {
  background: var(--accent);
  color: var(--bg);
}

.section {
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}

.section-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
}

.section-page h2 {
  margin-bottom: 18px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.card {
  display: block;
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  text-decoration: none;
  transition:
    background-color 160ms ease,
    color 160ms ease,
    border-color 160ms ease;
}

.card p,
.copy p,
.list li,
.footer p {
  color: var(--muted);
  line-height: 1.7;
}

.card p,
.copy p {
  margin: 10px 0 0;
}

.list {
  margin: 0;
  padding-left: 1.2rem;
}

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

.page-head {
  padding: 10px 0 30px;
}

.back-link {
  margin-bottom: 22px;
}

.note {
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid var(--light-line);
  padding-left: 18px;
  padding-right: 18px;
}

body.theme-dark .note {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line);
}

.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

body:not(.theme-dark) {
  color: var(--light-fg);
}

body:not(.theme-dark) .eyebrow,
body:not(.theme-dark) .kicker,
body:not(.theme-dark) .lead,
body:not(.theme-dark) .card p,
body:not(.theme-dark) .copy p,
body:not(.theme-dark) .list li,
body:not(.theme-dark) .footer p {
  color: var(--light-muted);
}

body:not(.theme-dark) .section,
body:not(.theme-dark) .hero-home,
body:not(.theme-dark) .note {
  border-color: var(--light-line);
}

body:not(.theme-dark) .card {
  background: #fafafa;
  border-color: var(--light-line);
}

body:not(.theme-dark) .back-link:hover,
body:not(.theme-dark) .back-link:focus-visible,
body:not(.theme-dark) .card:hover,
body:not(.theme-dark) .card:focus-visible {
  background: var(--light-fg);
  color: var(--light-bg);
}

@media (max-width: 860px) {
  .section-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  h1 {
    max-width: none;
  }
}