.section-nav {
  background: linear-gradient(to bottom, #1b1b1b 0%, #0d0d0d 100%);
  border-bottom: 2px solid #007BFF;
  color: white;
  padding: 20px 0;
}

.nav-container {
  display: grid;
  grid-template-columns: 60px 1fr auto; /* 这里左边预留60px空白 */
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  gap: 20px;
}

.nav-links {
  display: flex;
  gap: 50px;
  justify-content: center;
  align-items: center;
}

.nav-links a {
  color: #eee;
  text-decoration: none;
  font-size:18px;
  font-weight: 500;
}

.nav-links a:hover {
  color: #1e90ff;
}

.nav-buttons {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.btn1 {
  padding: 8px 16px;
  border-radius: 5px;
  font-weight: 500;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
}

.download-btn {
  background-color: #1e90ff;
  color: white !important;
}

.download-btn:hover {
  background-color: #007BFF;
}

.buy-btn {
  background-color: transparent;
  border: 1px solid #ccc;
  color: #fff;
}

.buy-btn:hover {
  background-color: #fff;
  color: #000;
}

/* 响应式 */
@media (max-width: 768px) {
  .nav-container {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-bottom: 10px;
  }

  .nav-buttons {
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
  }
}
.recommended-text {
  background-color: #e6f0ff;    
  border: 2px solid #1e90ff;    
  border-radius: 8px;           
  padding: 16px 20px;        
  color: #003366;              
  font-size: 16px;
  max-width: 700px;            
  margin: 20px auto;               
  box-shadow: 0 4px 8px rgb(30 144 255 / 0.2);
}
.recommended-icon {
  font-size: 24px;
  color: #1e90ff;
  flex-shrink: 0;
}
.features-title {
  font-size: 2.8rem;       
  font-weight: 700;
  color: #000000;          
  text-align: center;
  margin-bottom: 70px;     
  text-transform: capitalize;
  letter-spacing: 1.2px;    
}