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

body {
  font-family: "Segoe UI", Arial, sans-serif;
  color: #333;
  background: #ffffff;
  line-height: 1.6;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

/* HEADER */
.header {
  background: #0f172a;
  padding: 15px 0;
}

.logo {
  color: #fff;
  font-size: 1.8rem;
}

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

.header nav a {
  color: #fff;
  margin-left: 20px;
  text-decoration: none;
  font-weight: 500;
}

.header nav a:hover {
  color: #38bdf8;
}

/* HERO */
.hero {
  background: linear-gradient(to right, #0f172a, #1e293b);
  color: #fff;
  padding: 80px 0;
  text-align: center;
}

.hero h2 {
  font-size: 2.2rem;
  margin-bottom: 15px;
}

.btn-primary {
  display: inline-block;
  margin-top: 20px;
  background: #38bdf8;
  color: #000;
  padding: 12px 25px;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
}

/* SECTIONS */
.section {
  padding: 60px 0;
}

.light-bg {
  background: #f8fafc;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
  font-size: 2rem;
}

/* CARDS */
.cards {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.card {
  background: #fff;
  border: 1px solid #e5e7eb;
  padding: 25px;
  width: 300px;
  border-radius: 6px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

/* FOOTER */
.footer {
  background: #0f172a;
  color: #fff;
  text-align: center;
  padding: 20px 0;
}