* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  color: #222;
  background: #f4f6f8;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 0 20px;
}

.site-header {
  background: #0f172a;
  color: #fff;
}

.header-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
}

.logo {
  font-size: 20px;
  font-weight: 600;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}

nav a {
  color: #fff;
  text-decoration: none;
  font-size: 15px;
}

.hero {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #fff;
  padding: 80px 0;
}

.hero h1 {
  font-size: 40px;
  margin-bottom: 15px;
}

.section {
  padding: 70px 0;
  background: #ffffff;
}

.section.alt {
  background: #eef2f6;
}

.section h2 {
  margin-bottom: 30px;
  font-size: 30px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 25px;
}

.card {
  background: #ffffff;
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}

.list {
  padding-left: 20px;
  font-size: 16px;
}

.site-footer {
  background: #0f172a;
  color: #fff;
  text-align: center;
  padding: 25px 0;
}

a {
  color: #0f172a;
  font-weight: 500;
}