:root {
  --blue: #3B82F6;
  --green: #10B981;
  --purple: #8B5CF6;
  --dark: #111827;
  --gray: #4B5563;
  --bg-light: #F9FAFB;
  --bg-alt: #EEF2F7;
  --footer-bg: #1F2937;
  --footer-text: #D1D5DB;
  font-family: 'Inter', sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background-color: var(--bg-light); color: var(--dark); line-height: 1.6; }
header, section, footer { padding: 4rem 2rem; }
.container { max-width: 1200px; margin: 0 auto; }
h1 { font-size: 3rem; font-weight: 700; margin-bottom: 1rem; }
h2 { font-size: 2rem; font-weight: 600; margin-bottom: 1rem; }
p { font-size: 1.125rem; color: var(--gray); margin-bottom: 1.5rem; }
.btn-primary, .btn-secondary {
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  margin-right: 1rem;
}
.btn-primary {
  background-color: var(--blue);
  color: white;
}
.btn-secondary {
  border: 2px solid var(--blue);
  color: var(--blue);
  background-color: transparent;
}
.features { display: flex; gap: 2rem; margin-top: 2rem; }
.feature-box { flex: 1; padding: 1rem; background: white; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.05); }
.split-section { display: flex; gap: 2rem; flex-wrap: wrap; }
.split-section img { width: 100%; max-width: 500px; border-radius: 12px; }
.alt-bg { background-color: var(--bg-alt); }
footer { background-color: var(--footer-bg); color: var(--footer-text); text-align: center; padding: 2rem; }
input[type="email"] {
  padding: 1rem;
  width: 300px;
  border-radius: 12px;
  border: 1px solid #ccc;
  margin-right: 1rem;
}
.cta { margin-top: 1rem; }
.logo { max-width: 150px; margin-bottom: 1rem; }
.demo-img { max-width: 300px; }