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

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #0d1b2a;
  color: #ffffff;
  line-height: 1.6;
}

a {
  color: #00b4ff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background-color: #091522;
  padding: 20px 0;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.header-container {
  display: flex;
  justify-content: center;
  gap: 40px;
}

.menu a {
  font-size: 1em;
  font-weight: 500;
  transition: color 0.3s;
}

.menu a:hover {
  color: #ffffff;
}

/* Hero */
.hero {
  text-align: center;
  padding: 100px 20px 60px;
}

.hero h1 {
  font-size: 2.4em;
  margin-bottom: 15px;
}

.hero h1 span {
  color: #00b4ff;
}

.hero p {
  font-size: 1.1em;
  color: #cfd8e3;
  margin-bottom: 30px;
}

.btn {
  display: inline-block;
  background-color: #00b4ff;
  color: #ffffff;
  padding: 12px 25px;
  border-radius: 30px;
  font-weight: bold;
  transition: background 0.3s;
}

.btn:hover {
  background-color: #008ec2;
}

/* Sections */
.section {
  padding: 60px 20px;
}

.section h2 {
  text-align: center;
  font-size: 1.8em;
  color: #00b4ff;
  margin-bottom: 40px;
}

.cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 25px;
}

.card {
  background-color: #112a46;
  border-radius: 10px;
  padding: 25px;
  width: 300px;
  text-align: center;
  color: #e0e0e0;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
}

.card h3 {
  margin-bottom: 15px;
  font-size: 1.1em;
  color: #00b4ff;
}

/* Footer */
footer {
  background-color: #091522;
  text-align: center;
  padding: 25px 15px;
  color: #cccccc;
  font-size: 0.95em;
  margin-top: 40px;
}

/* Responsive */
@media (max-width: 768px) {
  .cards {
    flex-direction: column;
    align-items: center;
  }

  .header-container {
    flex-direction: column;
    gap: 15px;
  }

  .hero h1 {
    font-size: 1.8em;
  }
}