.tool-header{text-align:center;margin-bottom:32px}.header-badge{display:flex;justify-content:center;gap:12px;margin-bottom:20px;flex-wrap:wrap}.badge{background:linear-gradient(135deg, #dc2626, #b91c1c);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, #dc2626);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}.core-features{display:flex;justify-content:center;gap:24px;margin-bottom:32px;flex-wrap:wrap}.feature-item{background:white;border-radius:60px;padding:12px 24px;display:flex;align-items:center;gap:12px;box-shadow:0 4px 15px rgba(0,0,0,0.05);border:1px solid var(--gray-200)}.feature-item i{font-size:1.2rem;color:#dc2626}.feature-item span{font-weight:600;color:var(--gray-700)}.feature-item small{font-size:0.7rem;color:var(--gray-400)}.level-selector{background:linear-gradient(135deg, #f8fafc, #fff);border-radius:24px;padding:20px;margin-bottom:24px;border:1px solid var(--gray-200)}.selector-header{display:flex;align-items:center;gap:10px;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--gray-200)}.selector-header i{color:#dc2626}.selector-header span{font-weight:600}.level-tip{margin-left:auto;font-size:0.7rem;color:var(--gray-400)}.level-buttons{display:flex;gap:16px;flex-wrap:wrap}.level-btn{flex:1;background:white;border:2px solid var(--gray-200);padding:14px 20px;border-radius:20px;cursor:pointer;text-align:center;transition:all 0.3s}.level-btn i{font-size:1.3rem;color:var(--gray-400);margin-bottom:8px;display:block}.level-btn span{display:block;font-weight:600;margin-bottom:4px}.level-btn small{font-size:0.7rem;color:var(--gray-400)}.level-btn.active{background:linear-gradient(135deg, #dc2626, #b91c1c);border-color:#dc2626}.level-btn.active i,.level-btn.active span,.level-btn.active small{color:white}.options-card{background:var(--gray-50);border-radius:20px;padding:16px 20px;margin-bottom:24px}.options-header{display:flex;align-items:center;justify-content:space-between}.options-header i{color:#dc2626}.toggle-btn{background:transparent;border:none;cursor:pointer;color:var(--gray-500)}.options-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:16px;margin-top:16px;padding-top:16px;border-top:1px solid var(--gray-200)}.option-check{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:0.85rem}.option-check small{font-size:0.65rem;color:var(--gray-400);margin-left:4px}.editor-container{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px}.editor-panel{background:white;border-radius:20px;overflow:hidden;border:1px solid var(--gray-200)}.panel-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:linear-gradient(135deg, #f8fafc, #fff);border-bottom:1px solid var(--gray-200)}.panel-title{display:flex;align-items:center;gap:8px;font-weight:600}.panel-title i{color:#dc2626}.icon-btn{background:transparent;border:none;padding:6px 10px;border-radius:30px;cursor:pointer;color:var(--gray-500)}.icon-btn:hover{background:var(--gray-100);color:#dc2626}.encrypt-btn{background:linear-gradient(135deg, #dc2626, #b91c1c);border:none;padding:6px 16px;border-radius:30px;color:white;cursor:pointer}.code-textarea,.output-textarea{width:100%;min-height:500px;padding:16px;font-family:'Fira Code',monospace;font-size:13px;border:none;resize:vertical;background:#1a1a2e;color:#e0e0e0}.code-textarea:focus{outline:none}.panel-footer{padding:8px 16px;background:var(--gray-50);border-top:1px solid var(--gray-200);display:flex;justify-content:space-between;font-size:0.7rem;color:var(--gray-500)}.output-wrapper{min-height:350px;max-height:500px;overflow:auto;background:#1a1a2e}.output-textarea{margin:0;white-space:pre-wrap;word-break:break-all}.stats-card{display:flex;gap:24px;justify-content:center;padding:16px;background:linear-gradient(135deg, #f8fafc, #fff);border-radius:20px;margin-bottom:24px;border:1px solid var(--gray-200)}.stat-item{display:flex;align-items:center;gap:12px}.stat-item i{font-size:1.2rem;color:#dc2626}.stat-label{display:block;font-size:0.7rem;color:var(--gray-500)}.stat-item strong{font-size:1rem;color:var(--gray-800)}.info-footer{background:var(--gray-50);border-radius:20px;padding:20px}.info-header{display:flex;align-items:center;gap:10px;font-weight:600;margin-bottom:12px}.info-header i{color:#dc2626}.info-text p{margin-bottom:12px;color:var(--gray-600);font-size:0.85rem}.info-text ul{margin-left:20px;margin-bottom:16px}.info-text li{margin-bottom:6px;color:var(--gray-600);font-size:0.85rem}.usage-tip{background:#fef3c7;padding:12px 16px;border-radius:16px;color:#92400e}@media (max-width:900px){.editor-container{grid-template-columns:1fr}.options-grid{grid-template-columns:repeat(2, 1fr)}.level-buttons{flex-direction:column}.stats-card{flex-direction:column;align-items:flex-start}}