:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #111827;
  --muted: #5f6b7a;
  --line: #dbe3ee;
  --accent: #1769ff;
  --accent-soft: #e8f0ff;
  --max: 880px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top right, #e8f0ff 0, transparent 30rem), var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

a:hover {
  text-decoration: underline;
}

.site-header,
.site-footer,
main {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent);
  color: white;
  font-weight: 900;
}

nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
  font-weight: 650;
}

.hero,
.card {
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(28, 42, 68, 0.08);
}

.hero {
  padding: 48px;
  margin: 32px 0 24px;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(38px, 8vw, 68px);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 12px;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin: 24px 0 8px;
  font-size: 18px;
}

p {
  margin: 0 0 16px;
}

.lede {
  max-width: 650px;
  color: var(--muted);
  font-size: 20px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  font-weight: 750;
}

.button.secondary {
  background: var(--accent-soft);
  color: var(--accent);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.card {
  padding: 24px;
}

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

ul {
  padding-left: 22px;
  margin: 0 0 16px;
}

li + li {
  margin-top: 8px;
}

.site-footer {
  color: var(--muted);
  font-size: 14px;
  padding: 32px 0 48px;
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  nav {
    flex-wrap: wrap;
  }

  .hero {
    padding: 32px 24px;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}