:root {
  color-scheme: light;
  --background: #f6f8fc;
  --card: #ffffff;
  --primary: #4657d5;
  --primary-dark: #3343b8;
  --text: #172033;
  --muted: #5f6b80;
  --border: #dfe4ef;
  --accent: #eef0ff;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  background: var(--background);
  color: var(--text);
  line-height: 1.65;
  margin: 0;
}

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

a:hover {
  color: var(--primary-dark);
}

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

.nav,
.page,
.footer-inner {
  margin: 0 auto;
  max-width: 920px;
  padding-left: 24px;
  padding-right: 24px;
}

.nav {
  align-items: center;
  display: flex;
  justify-content: space-between;
  min-height: 72px;
}

.brand {
  color: var(--text);
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 20px;
}

.nav-links a {
  font-weight: 650;
  text-decoration: none;
}

.page {
  padding-bottom: 64px;
  padding-top: 56px;
}

.hero {
  margin-bottom: 32px;
}

.eyebrow {
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.25;
}

h1 {
  font-size: clamp(36px, 7vw, 58px);
  letter-spacing: -0.045em;
  margin: 10px 0 14px;
}

h2 {
  font-size: 24px;
  margin: 0 0 12px;
}

h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.lead {
  color: var(--muted);
  font-size: 18px;
  margin: 0;
  max-width: 700px;
}

.card,
.section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  margin-bottom: 18px;
  padding: 28px;
}

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid .card {
  margin-bottom: 0;
}

.button {
  background: var(--primary);
  border-radius: 12px;
  color: #ffffff;
  display: inline-block;
  font-weight: 750;
  margin-top: 10px;
  padding: 11px 16px;
  text-decoration: none;
}

.button:hover {
  background: var(--primary-dark);
  color: #ffffff;
}

ul {
  padding-left: 22px;
}

li + li {
  margin-top: 7px;
}

.note {
  background: var(--accent);
  border-radius: 12px;
  color: var(--muted);
  padding: 14px 16px;
}

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

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

.footer-inner {
  padding-bottom: 28px;
  padding-top: 28px;
}

@media (max-width: 640px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    justify-content: center;
    padding-bottom: 14px;
    padding-top: 14px;
  }

  .page {
    padding-top: 38px;
  }

  .card,
  .section {
    padding: 22px;
  }
}