.site-header {
  position: fixed;
  top: 0; width: 100%;
  background: #fff;
  border-bottom: 1px solid #eee;
  z-index: 1000;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between; 
  height: 70px;
  padding: 0 40px;
}

.logo, .nav-right {
  text-decoration: none;
  color: inherit;
  flex: 1;
}

.nav-center {
  flex: 2;
  display: flex;
  justify-content: center;
  gap: 20px;
}

.nav-right {
  display: flex;
  justify-content: flex-end;
}
.btn-blog {
  display: inline-block;
  padding: 8px 20px;
  background-color: #000;
  color: #fff !important;
  border-radius: 20px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: transform 0.2s, background-color 0.2s;
}

.btn-blog:hover {
  background-color: #333;
  transform: translateY(-2px);
}
.nav-btn {
  background: none; border: none;
  padding: 10px 15px;
  cursor: pointer;
  font-weight: 500;
  font-size: 15px;
}

.mobile-toggle, .nav-mobile { display: none; }

section, .site-banner-group {
  scroll-margin-top: 60px;
}

@media (max-width: 768px) {
  .nav-desktop { display: none; }

  .mobile-toggle { 
    display: flex; 
    flex-direction: column; 
    justify-content: center;
    gap: 5px; 
    background: none; 
    border: none;
    cursor: pointer;
    width: 30px;
    height: 30px;
    padding: 0;
    z-index: 1001;
  }

  .mobile-toggle span { 
    display: block;
    width: 25px; 
    height: 2px; 
    background: #000;
    transition: all 0.3s ease;
  }

  .nav-mobile {
    display: none;
    position: absolute; 
    top: 70px;
    left: 0; 
    width: 100%;
    background: #fff; 
    flex-direction: column; 
    padding: 20px 0; 
    border-bottom: 1px solid #eee;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  }

  .nav-mobile.active { 
    display: flex; 
  }

  .nav-mobile .nav-btn { 
    width: 100%; 
    text-align: center; 
    padding: 15px; 
    font-size: 16px;
    border-bottom: 1px solid #f9f9f9;
  }

  .mobile-blog {
    margin: 15px 20px 0 20px;
    text-align: center;
    padding: 15px;
    background-color: #000;
    color: #fff !important;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
  }
}