* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --background: #ffffff;
  --text: #172033;
  --muted: #667085;
  --line: #e6eaf0;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

.nav,
.container,
.site-footer-inner {
  width: min(100% - 32px, 880px);
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

.brand {
  color: var(--text);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0;
}

.nav-links,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
}

.container {
  padding: 52px 0 64px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  border: 1px solid #cfe0ff;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #1d4ed8;
  padding: 4px 10px;
  font-size: 13px;
  font-weight: 600;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(34px, 6vw, 52px);
  line-height: 1.1;
  letter-spacing: 0;
}

h2 {
  margin: 34px 0 10px;
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: 0;
}

p {
  margin: 0 0 16px;
}

ul {
  margin: 0 0 18px;
  padding-left: 22px;
}

li {
  margin: 6px 0;
}

.intro {
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
}

.updated {
  margin: 18px 0 34px;
  color: var(--muted);
  font-size: 14px;
}

.card-list {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.card {
  display: block;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px;
  color: var(--text);
}

.card:hover {
  border-color: #b8cef9;
  background: #fbfdff;
  text-decoration: none;
}

.card-title {
  display: block;
  margin-bottom: 4px;
  font-weight: 700;
}

.card-copy {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.contact-box {
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fafbfc;
  padding: 18px;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 0;
  font-size: 14px;
}

@media (max-width: 640px) {
  .nav,
  .site-footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .container {
    padding: 36px 0 48px;
  }
}