:root {
  --primary: #2563eb;
  --primary-dark: #1e3a8a;
  --bg: #f5f7fa;
  --text: #1f2937;
}

body { margin: 0; font-family: 'Inter', Arial, sans-serif; background: var(--bg); color: var(--text); }
header { background: white; padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 8px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
header h1 { color: var(--primary-dark); font-size: 1.5rem; margin: 0; }
nav a { margin-left: 1.5rem; font-weight: 500; color: var(--primary-dark); text-decoration: none; }
.login-btn { font-weight: 600; color: var(--primary); }
.hero { text-align: center; padding: 6rem 2rem 4rem; background: linear-gradient(135deg, #2563eb 0%, #1e3a8a 100%); color: white; }
.hero h2 { font-size: 2.5rem; margin-bottom: 1rem; }
.hero p { font-size: 1.2rem; opacity: 0.9; margin-bottom: 2rem; }
.cta-button { background: white; color: var(--primary-dark); padding: 0.9rem 1.8rem; border-radius: 8px; font-weight: bold; display: inline-block; }
.section { padding: 4rem 2rem; max-width: 1200px; margin: 0 auto; }
.section h3 { text-align: center; font-size: 2rem; margin-bottom: 2rem; }
.features, .pricing-cards, .team { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
.feature-card, .pricing-card { background: white; border-radius: 16px; padding: 2rem; flex: 1 1 250px; max-width: 300px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); text-align: center; }
footer { background: #1f2937; color: white; text-align: center; padding: 2rem; font-size: 0.9rem; }
.signup-input { padding: 0.8rem 1rem; border-radius: 8px; border: 1px solid #d1d5db; width: 250px; margin-right: 0.5rem; }
.signup-btn { padding: 0.85rem 1.4rem; border-radius: 8px; border: none; background: var(--primary); color: white; font-weight: bold; cursor: pointer; }