.tool-header{text-align:center;margin-bottom:40px}.header-badge{display:flex;justify-content:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}.badge{background:linear-gradient(135deg, #f59e0b, #d97706);color:white;padding:6px 18px;border-radius:40px;font-size:0.75rem;font-weight:500;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.tool-header h1{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg, #1e293b, #f59e0b);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}.tool-header p{color:var(--gray-500);font-size:1rem}.core-stats-aa{display:flex;justify-content:center;gap:24px;margin-bottom:32px;flex-wrap:wrap}.core-stat-aa{background:white;border-radius:60px;padding:14px 28px;display:flex;align-items:center;gap:16px;box-shadow:0 4px 15px rgba(0,0,0,0.05);border:1px solid var(--gray-200)}.core-stat-icon{width:48px;height:48px;background:linear-gradient(135deg, #fef3c7, #fffbeb);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#f59e0b;font-size:1.3rem}.core-stat-info{text-align:left}.core-stat-value{display:block;font-size:1.5rem;font-weight:700;color:var(--gray-800)}.core-stat-label{font-size:0.7rem;color:var(--gray-500)}.aa-tabs{display:flex;gap:16px;margin-bottom:32px;justify-content:center}.aa-tab{background:transparent;border:none;padding:14px 28px;cursor:pointer;transition:all 0.3s;border-radius:20px;text-align:center;min-width:180px}.aa-tab i{font-size:1.3rem;color:var(--gray-400);margin-bottom:8px;display:block}.aa-tab span{display:block;font-weight:600;color:var(--gray-600);margin-bottom:4px}.aa-tab small{font-size:0.65rem;color:var(--gray-400)}.aa-tab.active{background:linear-gradient(135deg, #f59e0b, #d97706);box-shadow:0 8px 25px rgba(245,158,11,0.3)}.aa-tab.active i,.aa-tab.active span,.aa-tab.active small{color:white}.editor-card{background:white;border-radius:24px;overflow:hidden;border:1px solid var(--gray-200);transition:all 0.3s;margin-bottom:20px}.editor-card:hover{box-shadow:0 8px 25px rgba(0,0,0,0.08)}.editor-header{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:linear-gradient(135deg, #f8fafc, #fff);border-bottom:1px solid var(--gray-200)}.editor-title{display:flex;align-items:center;gap:12px;font-weight:600;color:var(--gray-700)}.editor-title i{color:#f59e0b}.tip-badge{font-size:0.65rem;font-weight:normal;background:#fef3c7;color:#92400e;padding:2px 8px;border-radius:20px;margin-left:8px}.editor-actions{display:flex;gap:8px}.icon-btn-sm{background:transparent;border:none;padding:6px 10px;border-radius:30px;cursor:pointer;transition:all 0.2s;color:var(--gray-500);font-size:0.8rem}.icon-btn-sm:hover{background:var(--gray-100);color:#f59e0b}.aa-textarea{width:100%;min-height:250px;padding:20px;border:none;font-family:'Fira Code',monospace;font-size:0.85rem;line-height:1.6;resize:vertical;background:#1a1a2e;color:#e0e0e0}.aa-textarea:focus{outline:none}.aa-output{min-height:200px;padding:20px;font-family:'Fira Code',monospace;font-size:0.8rem;line-height:1.6;background:#1a1a2e;color:#e0e0e0;white-space:pre-wrap;word-break:break-all;max-height:300px;overflow-y:auto}.editor-footer{padding:10px 20px;background:var(--gray-50);border-top:1px solid var(--gray-200);font-size:0.7rem;color:var(--gray-500)}.action-center{text-align:center;margin:20px 0}.encode-btn,.decode-btn{background:linear-gradient(135deg, #f59e0b, #d97706);padding:14px 36px;font-size:1rem;border-radius:50px;box-shadow:0 4px 15px rgba(245,158,11,0.3)}.encode-btn:hover,.decode-btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(245,158,11,0.4)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.5);z-index:1000;display:flex;align-items:center;justify-content:center}.modal-content{background:white;border-radius:24px;width:90%;max-width:800px;max-height:80vh;overflow:hidden;animation:fadeIn 0.3s ease}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;background:linear-gradient(135deg, #f8fafc, #fff);border-bottom:1px solid var(--gray-200)}.modal-header h3{display:flex;align-items:center;gap:8px;font-size:1.1rem}.modal-close{background:transparent;border:none;font-size:1.5rem;cursor:pointer;color:var(--gray-500)}.modal-body{padding:20px;min-height:300px}.test-frame{width:100%;height:400px;border:1px solid var(--gray-200);border-radius:12px;background:white}.modal-footer{padding:12px 24px;border-top:1px solid var(--gray-200);display:flex;justify-content:flex-end}.info-footer{margin-top:24px;background:var(--gray-50);border-radius:20px;padding:20px}.info-footer-header{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-weight:600;color:var(--gray-700)}.info-content{color:var(--gray-600);font-size:0.85rem;line-height:1.6;margin-bottom:16px}.info-content code{background:var(--gray-200);padding:2px 6px;border-radius:6px;font-family:monospace}.info-tips{display:flex;flex-wrap:wrap;gap:20px;padding-top:12px;border-top:1px solid var(--gray-200)}.tip-item{display:flex;align-items:center;gap:8px;font-size:0.75rem;color:var(--gray-500)}.tip-item i{color:#10b981}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:768px){.aa-tab{min-width:auto;padding:10px 16px}.core-stats-aa{gap:12px}.core-stat-aa{padding:10px 20px}.core-stat-value{font-size:1.2rem}.editor-header{flex-direction:column;align-items:flex-start;gap:12px}.editor-actions{width:100%;justify-content:flex-end}}