body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #040404;
  color: #fff;
}
header {
  background: #1b6064;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
header .logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: #e08c2e;
}
nav button {
  background: #1f9a9e;
  border: none;
  color: white;
  padding: 0.5rem 1rem;
  margin-left: 0.5rem;
  cursor: pointer;
  border-radius: 5px;
  transition: background 0.3s;
}
nav button:hover {
  background: #277a85;
}
main {
  padding: 2rem;
}
.intro-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}
.intro-text {
  text-align: center;
}
.intro-image {
  position: relative;
  opacity: 0.25;
  max-width: 600px;
  width: 100%;
}
@media(min-width: 768px) {
  .intro-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
  .intro-text {
    flex: 1;
    padding-right: 2rem;
  }
  .intro-image {
    flex: 1;
    opacity: 0.25;
  }
}
h2 {
  color: #e08c2e;
  border-bottom: 2px solid #e08c2e;
  padding-bottom: 0.5rem;
  margin-top: 2rem;
}
.grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  margin-top: 1rem;
}
.card {
  background: #082f30;
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  transition: transform 0.3s ease;
}
.card:hover {
  transform: translateY(-5px);
}
.card h3 {
  color: #1f9a9e;
  margin-bottom: 0.5rem;
}
footer {
  margin-top: 1.5rem;
  text-align: center;
  padding: 1rem;
  background: #082f30;
  color: #fff;
}
footer a {
  color: #e08c2e;
  text-decoration: none;
}

.intro-image img {
  width: 100%;
  max-width: 400px;
  height: auto;
  display: block;
  margin: 0 auto;
}