.category-dropdown {
     border: 1px solid #e5e7eb;
     border-radius: 12px;
     background: #fff;
     padding: 14px;
     max-height: 420px;
     overflow-y: auto;
 }

 .category-item {
     border: 1px solid #f1f1f1;
     border-radius: 10px;
     margin-bottom: 10px;
     transition: all 0.2s ease;
     background: #fafafa;
 }

 .category-item:hover {
     border-color: #d1d5db;
     background: #f9fafb;
 }

 .category-summary {
     list-style: none;
     cursor: pointer;
     padding: 12px 14px;
     font-weight: 600;
     display: flex;
     align-items: center;
     justify-content: space-between;
     user-select: none;
 }

 .category-summary::-webkit-details-marker {
     display: none;
 }

 .category-summary::after {
     content: "+";
     font-size: 18px;
     font-weight: bold;
     color: #6b7280;
 }

 details[open] .category-summary::after {
     content: "−";
 }

 .category-content {
     padding: 0 14px 14px;
     border-top: 1px solid #ececec;
     background: #fff;
     border-radius: 0 0 10px 10px;
 }

 .radio-option {
     display: flex;
     align-items: center;
     gap: 10px;
     padding: 8px 10px;
     border-radius: 8px;
     cursor: pointer;
     transition: background 0.2s ease;
     margin-top: 6px;
 }

 .radio-option:hover {
     background: #f3f4f6;
 }

 .radio-option input[type="radio"] {
     accent-color: #2563eb;
     transform: scale(1.1);
     cursor: pointer;
 }

 .subcategory-option {
     margin-left: 18px;
     font-size: 14px;
     color: #4b5563;
 }

 .normal-category {
     border: 1px solid #f1f1f1;
     border-radius: 10px;
     padding: 4px;
     margin-bottom: 10px;
     background: #fafafa;
 }

 @media (max-width: 768px) {
     .category-dropdown {
         padding: 10px;
     }

     .category-summary {
         font-size: 14px;
         padding: 10px 12px;
     }

     .radio-option {
         font-size: 14px;
     }
 }