:root {
  --landing-bg: #fbfbf8;
  --landing-surface: rgba(255, 255, 255, 0.86);
  --landing-surface-strong: #ffffff;
  --landing-text: #111111;
  --landing-text-muted: #5f5f5f;
  --landing-line: rgba(17, 17, 17, 0.1);
  --landing-link: #111111;
  --landing-link-hover: #000000;
  --landing-shadow: 0 18px 42px rgba(17, 17, 17, 0.06);
  --landing-focus: #1d4ed8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --landing-bg: #0f1113;
    --landing-surface: rgba(19, 22, 25, 0.88);
    --landing-surface-strong: #131619;
    --landing-text: #f5f5f3;
    --landing-text-muted: #a2a7ae;
    --landing-line: rgba(245, 245, 243, 0.1);
    --landing-link: #f5f5f3;
    --landing-link-hover: #ffffff;
    --landing-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
    --landing-focus: #93c5fd;
  }
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light dark;
  background: var(--landing-bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(17, 17, 17, 0.035), transparent 34rem),
    var(--landing-bg);
  color: var(--landing-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

a {
  color: var(--landing-link);
}

a:hover {
  color: var(--landing-link-hover);
}

a:focus-visible {
  outline: 3px solid var(--landing-focus);
  outline-offset: 4px;
}

.page-shell {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 4rem;
}

.hero {
  padding: 4rem 0 2.75rem;
  border-bottom: 1px solid var(--landing-line);
}

.hero--compact {
  padding-bottom: 2rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--landing-text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.04em;
}

h1 {
  max-width: 14ch;
  font-size: clamp(2.8rem, 7vw, 5.4rem);
  line-height: 0.95;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
}

h3 {
  font-size: 1.35rem;
  line-height: 1.1;
}

.hero__lead {
  max-width: 48rem;
  margin: 1.3rem 0 0;
  color: var(--landing-text-muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

.hero__body {
  display: grid;
  gap: 0.95rem;
  margin-top: 1.5rem;
}

.hero__body p,
.section__heading p,
.wiki-card p,
.site-footer p,
.empty-state {
  margin: 0;
  color: var(--landing-text-muted);
  line-height: 1.75;
}

.hero__body p {
  max-width: 52rem;
}

.section {
  padding-top: 2.25rem;
}

.section__heading {
  display: grid;
  gap: 0.7rem;
  margin-bottom: 1.25rem;
}

.wiki-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 1rem;
}

.wiki-card {
  display: grid;
  gap: 0.95rem;
  padding: 1.2rem;
  border: 1px solid var(--landing-line);
  border-radius: 22px;
  background: var(--landing-surface);
  box-shadow: var(--landing-shadow);
  backdrop-filter: blur(10px);
}

.wiki-card:focus-within {
  border-color: var(--landing-focus);
}

.wiki-card__slug {
  color: var(--landing-text-muted);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.wiki-card h3 a {
  text-decoration: none;
}

.wiki-card__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 2.75rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--landing-line);
  border-radius: 999px;
  background: var(--landing-surface-strong);
  color: var(--landing-text);
  font-weight: 600;
  text-decoration: none;
}

.wiki-card__link:hover {
  border-color: var(--landing-text);
}

.site-footer {
  margin-top: 2.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--landing-line);
}

@media (max-width: 700px) {
  .page-shell {
    width: min(100% - 1.25rem, 1100px);
  }

  .hero {
    padding-top: 3rem;
  }

  h1 {
    max-width: none;
  }
}