:root {
  color-scheme: light dark;
  --background: #101114;
  --surface: #1a1c21;
  --surface-raised: #23262d;
  --text: #f4f5f7;
  --secondary: #b9bec8;
  --accent: #f28c28;
  --border: #343842;
  --max-width: 760px;
}

* {
  box-sizing: border-box;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif;
  line-height: 1.65;
  background: var(--background);
  color: var(--text);
}

body {
  margin: 0;
}

a {
  color: var(--accent);
}

.site-header,
main,
.site-footer {
  width: min(calc(100% - 32px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  padding: 48px 0 24px;
}

.brand {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
}

.eyebrow {
  margin: 28px 0 8px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2 {
  line-height: 1.25;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 8vw, 3.4rem);
}

h2 {
  margin: 2.2rem 0 0.75rem;
  font-size: 1.25rem;
}

p,
li {
  color: var(--secondary);
}

.lead {
  max-width: 42rem;
  font-size: 1.08rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.card {
  display: block;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
}

.card:hover,
.card:focus-visible {
  border-color: var(--accent);
  background: var(--surface-raised);
}

.card p {
  margin-bottom: 0;
}

.notice {
  margin: 28px 0;
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  background: var(--surface);
}

.site-footer {
  margin-top: 56px;
  padding: 24px 0 48px;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}

@media (prefers-color-scheme: light) {
  :root {
    --background: #fbfaf7;
    --surface: #ffffff;
    --surface-raised: #fff8ef;
    --text: #18191d;
    --secondary: #555b65;
    --accent: #b95300;
    --border: #ded9d1;
  }
}