.method-tabs{display:flex;gap:12px;margin-bottom:24px;flex-wrap:wrap;border-bottom:1px solid var(--gray-200);padding-bottom:12px}.method-btn{background:transparent;border:none;padding:10px 24px;border-radius:40px;cursor:pointer;font-size:0.85rem;transition:all 0.2s;color:var(--gray-600)}.method-btn i{margin-right:8px}.method-btn.active{background:var(--primary-color);color:white}.stats-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-bottom:30px}.stat-card{background:white;border-radius:20px;padding:20px;display:flex;align-items:center;gap:16px;border:1px solid var(--gray-200);transition:all 0.3s}.stat-card:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(0,0,0,0.1)}.stat-icon{width:50px;height:50px;background:linear-gradient(135deg, #e0e7ff, #f0f4ff);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary-color)}.stat-value{font-size:1.6rem;font-weight:700;color:var(--gray-800)}.stat-label{font-size:0.75rem;color:var(--gray-500)}.method-panel{margin-bottom:24px}.upload-section{margin-bottom:20px}.upload-area{border:2px dashed var(--gray-300);border-radius:20px;padding:40px;text-align:center;cursor:pointer;transition:all 0.3s}.upload-area:hover{border-color:var(--primary-color);background:var(--gray-50)}.upload-area i{font-size:48px;color:var(--gray-400);margin-bottom:12px}.upload-hint{font-size:0.75rem;color:var(--gray-500);margin-top:8px}.image-preview{text-align:center;margin-top:16px;padding:16px;background:var(--gray-50);border-radius:16px}.image-preview img{max-width:100%;max-height:200px;border-radius:12px}.image-info{margin-top:8px;font-size:0.8rem;color:var(--gray-500)}.search-section{margin-bottom:20px}.search-input-group{display:flex;gap:12px;margin-bottom:16px}.search-input-group .input-field{flex:1}.search-btn{padding:0 24px}.search-options{display:flex;gap:20px;flex-wrap:wrap;margin-bottom:16px}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:0.85rem}.checkbox-label input{display:none}.checkmark{width:18px;height:18px;border:2px solid var(--gray-400);border-radius:4px;display:inline-block;position:relative;transition:all 0.2s}.checkbox-label input:checked+.checkmark{background:var(--primary-color);border-color:var(--primary-color)}.checkbox-label input:checked+.checkmark::after{content:'\f00c';font-family:'Font Awesome 6 Free';font-weight:900;font-size:10px;color:white;position:absolute;top:50%;left:50%;transform:translate(-50%, -50%)}.result-preview{background:white;border-radius:16px;border:1px solid var(--gray-200);overflow:hidden}.result-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--gray-50);border-bottom:1px solid var(--gray-200);font-weight:500}.result-badge{background:var(--primary-color);color:white;padding:2px 12px;border-radius:20px;font-size:0.75rem}.match-list{max-height:300px;overflow-y:auto;padding:12px}.match-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-bottom:1px solid var(--gray-200);font-family:monospace;font-size:0.8rem}.match-item:last-child{border-bottom:none}.match-item .match-index{color:var(--gray-500);min-width:40px}.match-item .match-content{flex:1;word-break:break-all}.match-item .match-tag{background:var(--gray-100);padding:2px 8px;border-radius:4px;font-size:0.7rem}.match-item.highlight{background:#e0e7ff}.xpath-help,.css-help{margin-top:12px}.help-btn{background:transparent;border:none;color:var(--primary-color);cursor:pointer;font-size:0.8rem}.help-content{margin-top:12px;padding:16px;background:var(--gray-50);border-radius:12px}.help-grid{display:grid;grid-template-columns:repeat(2, 1fr);gap:8px;font-size:0.8rem}.help-grid code{background:var(--gray-200);padding:2px 6px;border-radius:4px;font-family:monospace}.dom-preview-section{margin-top:24px}.dom-preview{margin-top:16px;padding:20px;background:#1a1a2e;border-radius:16px;font-family:'Fira Code',monospace;font-size:0.8rem;max-height:400px;overflow-y:auto}.dom-node{padding:4px 0;padding-left:20px;border-left:1px solid #3a3a5e;position:relative;transition:all 0.2s}.dom-node::before{content:'├─';color:#5a5a7e;position:absolute;left:-8px}.dom-node:last-child::before{content:'└─'}.dom-node .dom-tag{color:#4ade80}.dom-node .dom-text{color:#fbbf24;margin-left:4px}.dom-node .dom-attr{color:#60a5fa}.dom-node.matched{background:rgba(59,130,246,0.2);border-left-color:var(--primary-color);border-radius:4px}.dom-node.matched .dom-tag{color:#60a5fa}.dom-node.hover{background:rgba(251,191,36,0.15);border-left-color:#fbbf24}.dom-children{margin-left:8px}.dom-legend{display:flex;gap:20px;margin-top:12px;padding:12px;background:var(--gray-50);border-radius:12px;font-size:0.75rem;color:var(--gray-600)}.legend-item{display:flex;align-items:center;gap:6px}.legend-color{width:16px;height:16px;border-radius:4px}.legend-color.matched{background:rgba(59,130,246,0.4);border:2px solid var(--primary-color)}.legend-color.normal{background:transparent;border:2px solid #3a3a5e}.legend-color.hovered{background:rgba(251,191,36,0.3);border:2px solid #fbbf24}.history-section{margin-top:24px}.history-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.history-item{background:var(--gray-50);padding:6px 12px;border-radius:20px;font-family:monospace;font-size:0.75rem;cursor:pointer;transition:all 0.2s}.history-item:hover{background:var(--primary-color);color:white}.knowledge-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-top:20px}.knowledge-card{background:var(--gray-50);border-radius:16px;padding:20px;text-align:center}.knowledge-card i{font-size:28px;color:var(--primary-color);margin-bottom:12px}.knowledge-card h4{font-size:0.85rem;margin-bottom:8px}.knowledge-card p{font-size:0.75rem;color:var(--gray-500);line-height:1.5}@media (max-width:900px){.stats-grid{grid-template-columns:repeat(2, 1fr)}.search-input-group{flex-direction:column}.help-grid{grid-template-columns:1fr}.knowledge-grid{grid-template-columns:repeat(2, 1fr)}}@media (max-width:600px){.stats-grid{grid-template-columns:1fr}.method-tabs{justify-content:center}.method-btn{padding:8px 16px;font-size:0.75rem}.search-options{flex-direction:column;gap:8px}.knowledge-grid{grid-template-columns:1fr}}