* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #f6f7fb;
  --text: #171923;
  --muted: #626778;
  --card: #ffffff;
  --accent: #7c3aed;
  --accent-dark: #5b21b6;
  --border: #e7e8ef;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.hero {
  color: white;
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,.15), transparent 30%),
    linear-gradient(135deg, #5b21b6, #7c3aed 55%, #db2777);
  padding-bottom: 90px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
}

.brand {
  color: white;
  font-weight: 800;
  text-decoration: none;
  font-size: 1.2rem;
}

.nav-link {
  color: white;
  text-decoration: none;
  border: 1px solid rgba(255,255,255,.45);
  padding: 9px 15px;
  border-radius: 999px;
}

.hero-content {
  padding-top: 70px;
  max-width: 850px;
}

.eyebrow {
  letter-spacing: .16em;
  font-size: .78rem;
  font-weight: 700;
  opacity: .8;
}

h1 {
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  line-height: 1.05;
  margin: 12px 0 22px;
}

.lead {
  max-width: 720px;
  font-size: 1.15rem;
  opacity: .92;
}

.button {
  display: inline-block;
  margin-top: 28px;
  background: white;
  color: var(--accent-dark);
  padding: 12px 20px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
}

.section {
  padding: 72px 0 0;
}

.section h2 {
  font-size: 2rem;
  margin-bottom: 18px;
}

.section p {
  color: var(--muted);
  margin-bottom: 15px;
}

.section a {
  color: var(--accent-dark);
  font-weight: 700;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 8px 30px rgba(20, 20, 40, .05);
}

.card h3 {
  margin-bottom: 10px;
}

.feature-list {
  padding-left: 22px;
  color: var(--muted);
}

.feature-list li {
  margin: 10px 0;
}

details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 17px 20px;
  margin: 12px 0;
}

summary {
  cursor: pointer;
  font-weight: 700;
}

details p {
  margin-top: 12px;
}

footer {
  margin-top: 80px;
  background: #11131b;
  color: #cfd2dc;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 0;
}

footer a {
  color: white;
}

@media (max-width: 760px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .nav {
    gap: 15px;
  }

  .hero {
    padding-bottom: 60px;
  }

  .hero-content {
    padding-top: 45px;
  }

  .footer-inner {
    flex-direction: column;
  }
}