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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #fff;
}

a {
  text-decoration: none;
  color: inherit;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #eee;
  z-index: 100;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: #6366f1;
}

nav a {
  margin-left: 2rem;
  font-size: 0.9rem;
  color: #666;
  transition: color 0.2s;
}

nav a:hover {
  color: #6366f1;
}

/* Hero */
.hero {
  padding: 10rem 0 6rem;
  text-align: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 2rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-primary {
  background: #fff;
  color: #6366f1;
}

.btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.5);
  color: #fff;
  margin-left: 1rem;
}

/* Features */
.features {
  padding: 5rem 0;
}

.features h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.features .subtitle {
  text-align: center;
  color: #666;
  margin-bottom: 3rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid #eee;
  transition: box-shadow 0.2s;
}

.feature-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: #666;
  font-size: 0.9rem;
}

/* CTA */
.cta {
  padding: 5rem 0;
  text-align: center;
  background: #f8f9fa;
}

.cta h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.cta p {
  color: #666;
  margin-bottom: 2rem;
}

.btn-gradient {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: #fff;
}

/* Footer */
footer {
  padding: 2rem 0;
  text-align: center;
  color: #999;
  font-size: 0.85rem;
  border-top: 1px solid #eee;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

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

  .btn-outline {
    margin-left: 0;
    margin-top: 1rem;
  }
}