:root {
  --bg: #f7f8fa;
  --text: #1f2937;
  --sub: #6b7280;
  --card: #ffffff;
  --line: #e5e7eb;
  --accent: #2563eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

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

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 8%;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.logo {
  font-weight: 700;
  color: var(--text);
}

.nav {
  display: flex;
  gap: 24px;
}

.nav a {
  color: var(--sub);
  font-size: 14px;
}

.nav a:hover {
  color: var(--accent);
}

main {
  width: min(1000px, 88%);
  margin: 0 auto;
}

.hero {
  padding: 110px 0 90px;
}

.label {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
}

.hero h1 {
  font-size: clamp(44px, 8vw, 76px);
  line-height: 1.05;
  margin: 0 0 24px;
  letter-spacing: -0.04em;
}

.lead {
  max-width: 680px;
  color: var(--sub);
  font-size: 18px;
}

.buttons {
  display: flex;
  gap: 12px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.button {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  font-weight: 600;
}

.button.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.section {
  padding: 56px 0;
  border-top: 1px solid var(--line);
}

.section h2 {
  font-size: 28px;
  margin: 0 0 20px;
}

.section > p {
  max-width: 760px;
  color: var(--sub);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
}

.card h3 {
  margin: 0 0 10px;
}

.card p {
  color: var(--sub);
  margin-bottom: 18px;
}

.card span {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
}

.footer {
  text-align: center;
  padding: 40px 0;
  color: var(--sub);
  font-size: 14px;
}

.card-link {
  display: inline-block;
  margin-top: 16px;
  font-weight: 600;
  color: var(--accent);
}

@media (max-width: 760px) {
  .header {
    padding: 14px 6%;
  }

  .nav {
    gap: 14px;
  }

  .hero {
    padding: 80px 0 64px;
  }

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