:root {
  color-scheme: light dark;
  --bg: #0f1419;
  --surface: #1a2332;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #7cb7ff;
  --accent-hover: #a8d0ff;
  --border: #2d3a4d;
  --disclosure-bg: #252f3f;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7f9;
    --surface: #fff;
    --text: #1a1d21;
    --muted: #5c6370;
    --accent: #1565c0;
    --accent-hover: #0d47a1;
    --border: #d8dee9;
    --disclosure-bg: #e8edf4;
  }
}

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

html {
  font-family: var(--font);
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

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

.site-header .inner,
.site-footer .inner,
.main {
  width: 100%;
  max-width: 52rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header .inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
  text-decoration: none;
}

.logo:hover {
  color: var(--accent);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

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

.nav a:hover {
  color: var(--accent);
}

.disclosure-banner {
  background: var(--disclosure-bg);
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.disclosure-banner p {
  margin: 0;
  max-width: 52rem;
  margin-inline: auto;
  padding: 0.75rem 1.25rem;
}

.disclosure-banner a {
  color: var(--accent);
}

.main {
  flex: 1;
  padding-top: 2rem;
  padding-bottom: 3rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: auto;
  padding: 1.5rem 0;
  font-size: 0.875rem;
}

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

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

.hero,
.page-header {
  margin-bottom: 2rem;
}

.hero h1,
.page-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  line-height: 1.2;
  margin: 0 0 0.75rem;
}

.lede {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 40rem;
  margin: 0 0 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border-color: transparent;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.affiliate-link {
  margin-top: 0.5rem;
}

.category-block {
  margin-bottom: 2.5rem;
}

.category-block h2 {
  font-size: 1.25rem;
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0;
  overflow: hidden;
}

.card-body {
  padding: 1.25rem;
}

.card-badge {
  display: inline-block;
  margin: 0 0 0.5rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
}

.card-title {
  font-size: 1.125rem;
  margin: 0 0 0.35rem;
}

.card-meta {
  margin: 0 0 0.75rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.card-summary {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.card-cta {
  margin: 0;
}

.prose {
  max-width: 40rem;
}

.prose h1 {
  margin-top: 0;
}

.prose h2 {
  font-size: 1.15rem;
  margin: 1.75rem 0 0.5rem;
}

.prose p {
  margin: 0 0 1rem;
}

.prose code {
  font-size: 0.9em;
  padding: 0.1em 0.35em;
  border-radius: 0.25rem;
  background: var(--disclosure-bg);
}