/* Reset & base */

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

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background-color: #f3f4f6;
  color: #111827;
  line-height: 1.6;
}

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

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

/* Top Bar */

.top-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: #020617;
  color: #f9fafb;
  padding: 0.75rem 0;
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
}

.nav a {
  margin-left: 1.5rem;
  font-size: 0.95rem;
  opacity: 0.9;
}

.nav a:hover {
  opacity: 1;
}

/* Hero Section */

.hero {
  background-image:
    linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(22, 163, 140, 0.9)),
    url("https://images.pexels.com/photos/106399/pexels-photo-106399.jpeg?auto=compress&cs=tinysrgb&w=1600");
  background-size: cover;
  background-position: center;
  min-height: 55vh;
  display: flex;
  align-items: center;
  position: relative