.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, #667eea, #764ba2);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, #667eea);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}.tool-header p{color:var(--gray-500);font-size:1rem}.core-stats{display:flex;justify-content:center;gap:24px;margin-bottom:32px;flex-wrap:wrap}.core-stat{background:white;border-radius:60px;padding:16px 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, #e0e7ff, #f0f4ff);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#667eea;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)}.test-area{background:linear-gradient(135deg, #f8fafc, #fff);border:2px dashed var(--gray-300);border-radius:32px;padding:60px 20px;text-align:center;cursor:pointer;margin-bottom:32px;transition:all 0.3s}.test-area:focus{outline:none;border-color:#667eea;background:linear-gradient(135deg, #f0f4ff, #fff);box-shadow:0 0 0 4px rgba(102,126,234,0.1)}.test-area-content i{font-size:3rem;color:var(--gray-400);margin-bottom:16px}.test-area-content p{font-size:1rem;color:var(--gray-600);margin-bottom:8px}.test-hint{font-size:0.7rem;color:var(--gray-400)}.current-key-display{background:linear-gradient(135deg, #667eea, #764ba2);border-radius:60px;padding:20px 30px;margin-bottom:32px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;color:white}.current-key-icon i{font-size:2rem}.current-key-info{flex:1;text-align:center}.current-key-label{display:block;font-size:0.7rem;opacity:0.8;margin-bottom:4px}.current-key-value{font-size:1.5rem;font-weight:700;letter-spacing:2px}.current-key-code{background:rgba(255,255,255,0.2);padding:8px 20px;border-radius:40px;font-family:'Fira Code',monospace;font-weight:600}.key-details{background:var(--gray-50);border-radius:24px;padding:24px;margin-bottom:32px}.key-details h3{font-size:1rem;margin-bottom:20px;display:flex;align-items:center;gap:8px;color:var(--gray-700)}.details-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:16px}.detail-card{background:white;border-radius:20px;padding:16px;display:flex;align-items:center;gap:12px;transition:all 0.3s;border:1px solid var(--gray-200)}.detail-card:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,0.08)}.detail-icon{width:40px;height:40px;background:linear-gradient(135deg, #e0e7ff, #f0f4ff);border-radius:12px;display:flex;align-items:center;justify-content:center;color:#667eea}.detail-content{flex:1}.detail-label{display:block;font-size:0.65rem;color:var(--gray-500);margin-bottom:2px}.detail-value{display:block;font-size:0.9rem;font-weight:600;color:var(--gray-800);font-family:monospace}.key-history{background:var(--gray-50);border-radius:24px;padding:24px;margin-bottom:32px}.history-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;flex-wrap:wrap;gap:12px}.history-header h3{font-size:1rem;display:flex;align-items:center;gap:8px;color:var(--gray-700)}.history-actions{display:flex;gap:8px}.action-btn-sm{background:white;border:1px solid var(--gray-200);padding:6px 14px;border-radius:40px;cursor:pointer;font-size:0.75rem;transition:all 0.2s}.action-btn-sm:hover{background:#667eea;border-color:#667eea;color:white}.history-list{max-height:300px;overflow-y:auto}.empty-history{text-align:center;padding:40px;color:var(--gray-400)}.empty-history i{font-size:2rem;margin-bottom:12px}.history-item{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:white;border-radius:16px;margin-bottom:8px;transition:all 0.2s;animation:slideIn 0.3s ease}.history-item:hover{transform:translateX(4px);box-shadow:0 2px 8px rgba(0,0,0,0.05)}.history-key{font-weight:700;color:#667eea;font-family:monospace;min-width:100px}.history-code{font-family:monospace;color:var(--gray-600)}.history-time{font-size:0.7rem;color:var(--gray-400)}@keyframes slideIn{from{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:translateX(0)}}.key-reference{background:white;border-radius:24px;padding:24px;border:1px solid var(--gray-200)}.reference-header{margin-bottom:20px}.reference-header h3{font-size:1rem;display:flex;align-items:center;gap:8px;color:var(--gray-700)}.reference-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:20px}.ref-category h4{font-size:0.85rem;color:var(--gray-600);margin-bottom:12px;padding-bottom:6px;border-bottom:1px solid var(--gray-200)}.ref-items{display:flex;flex-wrap:wrap;gap:8px}.ref-item{display:flex;justify-content:space-between;gap:12px;font-size:0.75rem;padding:4px 0;border-bottom:1px solid var(--gray-100);min-width:80px}.ref-code{font-family:monospace;color:#667eea;font-weight:500}@media (max-width:900px){.details-grid{grid-template-columns:repeat(2, 1fr)}.reference-grid{grid-template-columns:repeat(2, 1fr)}}@media (max-width:768px){.details-grid{grid-template-columns:1fr}.reference-grid{grid-template-columns:1fr}.core-stat{padding:12px 20px}.current-key-value{font-size:1.1rem}.history-header{flex-direction:column;align-items:flex-start}}