:root {
  color-scheme: light;
  --bg: #f3f7fb;
  --surface: rgba(255, 255, 255, 0.92);
  --text: #142033;
  --muted: #5a677d;
  --accent: #0a84ff;
  --accent-strong: #0059d6;
  --border: rgba(20, 32, 51, 0.1);
  --shadow: 0 24px 60px rgba(21, 35, 57, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(10, 132, 255, 0.18), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
}

.shell {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 72px;
}

.hero,
.card,
.prose {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero,
.prose {
  padding: 32px;
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

h1,
h2 {
  margin: 0 0 12px;
  line-height: 1.1;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.75rem);
}

h2 {
  font-size: 1.2rem;
}

p,
li {
  color: var(--muted);
  line-height: 1.65;
}

.lede {
  max-width: 640px;
  font-size: 1.05rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 20px;
  padding: 14px 20px;
  border-radius: 999px;
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  text-decoration: none;
  font-weight: 700;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin: 18px 0;
}

.card {
  padding: 24px;
}

.link-list {
  margin: 0;
  padding-left: 20px;
}

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

@media (max-width: 640px) {
  .shell {
    width: min(100% - 24px, 960px);
    padding-top: 24px;
  }

  .hero,
  .card,
  .prose {
    border-radius: 22px;
  }
}