:root {
  --primary: #007bff;
  --surface: #ffffff;
  --surface-tint: #f2f5f9;
  --on-surface: #1c1b1e;
  --on-surface-variant: #59555e;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  color: var(--on-surface);
  background: var(--surface-tint);
}

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

.header,
.footer,
main {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
  padding-bottom: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  font-weight: 600;
  font-size: 19px;
  text-decoration: none;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 15px;
}

.nav a {
  color: var(--on-surface-variant);
  text-decoration: none;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--primary);
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 24px;
}

.hero {
  text-align: center;
  padding: 56px 32px;
}

.hero img {
  width: 112px;
  height: 112px;
  border-radius: 26px;
}

.hero h1 {
  font-size: 40px;
  line-height: 1.15;
  margin: 24px 0 12px;
}

.tagline {
  font-size: 20px;
  color: var(--on-surface-variant);
  margin: 0 auto 24px;
  max-width: 520px;
}

.badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
}

h1 {
  font-size: 32px;
  line-height: 1.2;
  margin: 0 0 8px;
}

h2 {
  font-size: 20px;
  margin: 32px 0 8px;
}

.updated,
.muted {
  color: var(--on-surface-variant);
  font-size: 15px;
}

ul,
ol {
  padding-left: 22px;
}

li {
  margin-bottom: 8px;
}

.footer {
  padding-top: 8px;
  padding-bottom: 40px;
  color: var(--on-surface-variant);
  font-size: 14px;
  text-align: center;
}

@media (max-width: 560px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .card {
    padding: 24px 20px;
  }

  .hero h1 {
    font-size: 32px;
  }
}