body {
  background: #f0f6fa;
  font-family: system-ui, Arial, sans-serif;
}

.container {
  max-width: 480px;
  margin: 30px auto;
  padding: 0 15px;
}

.card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 6px 14px rgba(0,0,0,.1);
  padding: 20px;
  text-align: left;
}

.card-header {
  background: linear-gradient(90deg,#1aa7a5,#27ae60);
  border-radius: 12px;
  color: #fff;
  font-weight: bold;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  margin-bottom: 15px;
}

.logo-small {
  height: 30px;
}

h2 {
  margin: 0;
  color: #15827f;
}

p.desc {
  margin: 5px 0 15px;
  color: #555;
}

details {
  background: #f8f9fb;
  border-radius: 8px;
  margin: 6px 0;
  padding: 8px 12px;
  cursor: pointer;
}
details summary {
  font-weight: 600;
  color: #333;
  outline: none;
}

.price-box {
  background: linear-gradient(90deg,#1a73e8,#1259b2);
  color: #fff;
  text-align: center;
  border-radius: 10px;
  padding: 15px;
  font-size: 16px;
  margin: 15px 0;
}
.price-box b {
  font-size: 20px;
}

.cta {
  text-align: center;
  margin-top: 10px;
}
.btn {
  text-decoration: none;
  display: inline-block;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: bold;
  font-size: 14px;
  margin: 5px;
  transition: .2s;
}
.btn.back {
  background: #eee;
  color: #333;
}
.btn.book {
  background: #2ecc71;
  color: #fff;
}
.btn.book:hover {
  background: #27ae60;
}