:root {
  color-scheme: light;
  --bg: #eef8fb;
  --surface: #ffffff;
  --text: #172033;
  --muted: #657084;
  --line: rgba(47, 87, 123, 0.14);
  --accent: #2374c6;
  --accent-soft: #e6f4ff;
  --shadow: 0 24px 70px rgba(33, 63, 92, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 10%, rgba(59, 203, 215, 0.22), transparent 28rem),
    radial-gradient(circle at 90% 0%, rgba(62, 143, 238, 0.16), transparent 26rem),
    var(--bg);
}

.page-shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0;
}

.hero-card,
.content-card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  border-radius: 30px;
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 54px;
}

.content-card {
  padding: 44px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(34px, 6vw, 56px);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

h2 {
  margin: 34px 0 10px;
  font-size: 22px;
  letter-spacing: -0.02em;
}

h3 {
  margin: 22px 0 8px;
  font-size: 18px;
}

p,
li {
  font-size: 17px;
  line-height: 1.62;
}

p {
  margin: 0 0 14px;
}

ul {
  margin: 8px 0 0;
  padding-left: 22px;
}

a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.lead {
  max-width: 720px;
  color: var(--muted);
  font-size: 20px;
}

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

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

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 16px;
}

.primary-link {
  color: #ffffff;
  background: linear-gradient(135deg, #27c9d6, #3587e8);
}

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

.back-link {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 20px, 920px);
    padding: 20px 0;
  }

  .hero-card,
  .content-card {
    border-radius: 24px;
    padding: 28px 22px;
  }
}