.dha-tool{max-width:900px;margin:0 auto}.dha-upload{border:2px dashed var(--border);border-radius:var(--radius-lg);padding:48px 24px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s}.dha-upload:hover,.dha-upload-drag{border-color:var(--primary);background:var(--primary-light)}.dha-upload-icon{font-size:3rem;margin-bottom:12px}.dha-upload p{margin:4px 0;color:var(--text-secondary)}.dha-upload strong{color:var(--primary);cursor:pointer}.dha-hint{font-size:.8rem;color:var(--text-tertiary)!important;margin-top:8px}.dha-loading{text-align:center;padding:48px}.dha-loading p{color:var(--text-secondary);margin-top:12px}.dha-spinner{width:40px;height:40px;margin:0 auto;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:dha-spin .8s linear infinite}@keyframes dha-spin{to{transform:rotate(360deg)}}.dha-summary-bar{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:24px;flex-wrap:wrap;gap:12px}.dha-summary-left h3{font-size:1.2rem;word-break:break-word}.dha-stats{display:flex;gap:16px;margin-top:8px;flex-wrap:wrap}.dha-stat{font-size:.85rem;color:var(--text-secondary)}.dha-stat strong{color:var(--text);font-size:1rem}.dha-actions{display:flex;gap:8px;flex-shrink:0}.btn{padding:8px 16px;border-radius:var(--radius);font-size:.85rem;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .15s;white-space:nowrap}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{background:var(--bg);color:var(--text);border-color:var(--border)}.btn-secondary:hover{border-color:var(--border-hover);background:var(--bg-secondary)}.dha-tree-container{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.dha-table-header{display:grid;grid-template-columns:1fr 100px 120px;background:var(--bg-secondary);border-bottom:2px solid var(--border);padding:10px 16px;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--text-secondary)}.dha-th-words,.dha-th-time{text-align:right}.dha-table-body{max-height:600px;overflow-y:auto}.dha-table-row{display:grid;grid-template-columns:1fr 100px 120px;align-items:center;padding:0 16px;border-bottom:1px solid var(--border);transition:background .1s;min-height:38px}.dha-table-row:hover{background:var(--primary-light)}.dha-td-title{min-width:0}.dha-title-inner{display:flex;align-items:center;gap:6px;position:relative}.dha-indent-guide{display:inline-block;width:22px;height:100%;position:absolute;border-left:1px solid var(--border);pointer-events:none}.dha-toggle{flex-shrink:0;width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;font-size:.65rem;color:var(--text-tertiary);user-select:none;transition:color .15s;z-index:1}.dha-toggle:hover{color:var(--primary)}.dha-toggle-placeholder{display:inline-block;width:18px;flex-shrink:0}.dha-children.dha-collapsed{display:none}.dha-level-badge{flex-shrink:0;padding:2px 7px;border-radius:4px;font-size:.68rem;font-weight:700;line-height:1.3}.dha-level-1{background:#4f46e5;color:#fff}.dha-level-2{background:#6366f1;color:#fff}.dha-level-3{background:#818cf8;color:#fff}.dha-level-4{background:#a5b4fc;color:#1e1b4b}.dha-level-5{background:#c7d2fe;color:#1e1b4b}.dha-level-6{background:#e0e7ff;color:#1e1b4b}.dha-level-7{background:#ddd6fe;color:#1e1b4b}.dha-level-8{background:#ede9fe;color:#1e1b4b}.dha-level-9{background:#f5f3ff;color:#1e1b4b}.dha-node-text{flex:1;min-width:0;font-size:.85rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text)}.dha-td-words{text-align:right;font-size:.82rem;font-weight:600;color:var(--text);font-variant-numeric:tabular-nums;padding-right:8px}.dha-td-time{text-align:right;font-size:.8rem;color:var(--text-secondary);font-variant-numeric:tabular-nums}.dha-table-body::-webkit-scrollbar{width:8px}.dha-table-body::-webkit-scrollbar-track{background:var(--bg-secondary)}.dha-table-body::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.dha-table-body::-webkit-scrollbar-thumb:hover{background:var(--border-hover)}.dha-empty{text-align:center;padding:48px 24px}.dha-empty-icon{font-size:3rem;margin-bottom:12px}.dha-empty h3{font-size:1.2rem;margin-bottom:8px}.dha-empty p{color:var(--text-secondary);max-width:500px;margin:0 auto}.dha-error{text-align:center;padding:48px 24px}.dha-error-icon{font-size:3rem;margin-bottom:12px}.dha-error h3{font-size:1.2rem;margin-bottom:8px}.dha-error p{color:var(--text-secondary);margin-bottom:16px;word-break:break-word}.faq-section{max-width:800px;margin:48px auto 0;padding:0 0 48px}.faq-section h2{font-size:1.75rem;margin-bottom:28px}.faq-item{margin-bottom:24px}.faq-item h3{font-size:1.1rem;margin-bottom:8px}.faq-item p{color:var(--text-secondary);line-height:1.7}@media (max-width: 768px){.dha-summary-bar{flex-direction:column}.dha-table-header{grid-template-columns:1fr 70px 80px;padding:8px 12px;font-size:.7rem}.dha-table-row{grid-template-columns:1fr 70px 80px;padding:0 12px}.dha-td-words{font-size:.75rem}.dha-td-time{font-size:.72rem}.dha-node-text{font-size:.78rem}.dha-level-badge{font-size:.62rem;padding:1px 5px}.dha-title-inner{gap:4px}.dha-toggle{width:16px;font-size:.6rem}.dha-toggle-placeholder{width:16px}.dha-indent-guide{width:18px}.dha-title-inner{padding-left:0!important}}