body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0b1f14;
  color: #fff;
}
header {
  background: linear-gradient(90deg, #0b3d2e, #145a3a);
  padding: 20px;
  text-align: center;
}
nav {
  background: #123524;
  text-align: center;
  padding: 10px;
}
nav a {
  color: #cde7d6;
  margin: 0 12px;
  text-decoration: none;
  font-weight: bold;
}
nav a:hover {
  color: #7CFFB2;
}
.container {
  max-width: 1100px;
  margin: auto;
  padding: 30px 20px;
}
.hero {
  background: url('https://images.unsplash.com/photo-1603475725886-5f1f5c3c9b0e?auto=format&fit=crop&w=1400&q=60') center/cover;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.hero h2 {
  background: rgba(0,0,0,0.55);
  padding: 20px;
  border-radius: 10px;
}
.card {
  background: #123524;
  padding: 20px;
  border-radius: 10px;
  margin-bottom: 15px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 15px;
}
.ba-pair {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 15px;
  margin-bottom: 25px;
}
.ba-pair figure {
  margin: 0;
  background: #123524;
  border-radius: 10px;
  overflow: hidden;
}
.ba-pair img {
  display: block;
  width: 100%;
  height: 260px;
  object-fit: cover;
}
.ba-pair figcaption {
  padding: 10px;
  text-align: center;
  font-weight: bold;
  color: #cde7d6;
}
code {
  background: #0b3d2e;
  padding: 2px 6px;
  border-radius: 4px;
}
footer {
  text-align: center;
  padding: 20px;
  color: #aaa;
  font-size: 13px;
}