:root {
  --bg: #f8fafc;
  --text: #0f172a;
  --muted: #475569;
  --line: #dbe3ef;
  --brand: #0f4bcc;
  --brand-strong: #0c3ba0;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: inherit;
}

.hero {
  background: linear-gradient(180deg, #ffffff 0%, #eef4ff 100%);
  border-bottom: 1px solid var(--line);
}

.top-nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 18px;
}

.nav-link {
  color: var(--brand);
  text-decoration: none;
  font-weight: 600;
}

.hero-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 20px 54px;
}

.eyebrow {
  margin: 0;
  color: var(--brand);
  font-weight: 700;
}

h1 {
  margin: 10px 0 12px;
  font-size: clamp(30px, 5vw, 50px);
  line-height: 1.15;
}

.lead {
  max-width: 780px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.cta-row {
  margin-top: 20px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 10px;
  text-decoration: none;
  border: 1px solid transparent;
  font-weight: 600;
}

.btn.primary {
  background: var(--brand);
  color: #fff;
}

.btn.primary:hover {
  background: var(--brand-strong);
}

.btn.ghost {
  border-color: var(--line);
  background: #fff;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 20px 34px;
}

.section + .section {
  margin-top: 26px;
}

h2 {
  margin: 0 0 12px;
  font-size: 28px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 14px;
}

.card h3 {
  margin: 0 0 8px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.feature-list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.8;
}

.frame-wrap {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
}

iframe {
  width: 100%;
  height: 760px;
  border: 0;
  display: block;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 20px;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
  }

  iframe {
    height: 620px;
  }
}