.vt-tool{max-width:900px;margin:0 auto}.vt-privacy{display:flex;align-items:center;gap:8px;padding:10px 16px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;font-size:.85rem;color:var(--text-secondary)}.vt-tabs{display:flex;gap:6px;margin-bottom:20px;flex-wrap:wrap;padding:6px;background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border)}.vt-tab{flex:1;min-width:110px;padding:10px 6px;background:transparent;border:none;border-radius:var(--radius);font-size:.82rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all .2s}.vt-tab:hover{background:var(--bg);color:var(--text)}.vt-tab.active{background:var(--primary);color:#fff}.vt-panel{display:none}.vt-panel.active{display:block}.vt-upload{border:2px dashed var(--border);border-radius:var(--radius-lg);padding:48px 32px;text-align:center;cursor:pointer;transition:all .2s;background:var(--bg)}.vt-upload:hover,.vt-upload.drag{border-color:var(--primary);background:var(--bg-secondary)}.vt-upload-text{font-size:1.05rem;color:var(--text);margin:8px 0 4px;font-weight:500}.vt-hint{font-size:.82rem;color:var(--text-tertiary);margin:0}.vt-work{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px}.vt-video-box{background:#000;border-radius:var(--radius);overflow:hidden;display:flex;justify-content:center;align-items:center;padding:8px;margin-bottom:12px}.vt-info-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:8px;margin-bottom:16px}.vt-info-item{display:flex;flex-direction:column;gap:2px;padding:10px 12px;background:var(--bg);border-radius:var(--radius);border:1px solid var(--border)}.vt-info-label{font-size:.72rem;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.04em}.vt-info-value{font-size:.88rem;color:var(--text);font-weight:500;word-break:break-all}.vt-options{margin-bottom:20px;padding:16px;background:var(--bg);border-radius:var(--radius);border:1px solid var(--border)}.vt-opt-row{display:flex;align-items:flex-start;gap:16px;padding:10px 0;border-bottom:1px solid var(--border)}.vt-opt-row:last-child{border-bottom:none}.vt-opt-label{flex-shrink:0;width:130px;font-size:.85rem;font-weight:500;color:var(--text);padding-top:6px}.vt-opt-control{flex:1;min-width:0}.vt-select,.vt-input{width:100%;max-width:320px;padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-secondary);color:var(--text);font-size:.88rem}.vt-select:focus,.vt-input:focus{outline:none;border-color:var(--primary)}.vt-opt-hint-inline{font-size:.78rem;color:var(--text-tertiary);margin-left:6px}.vt-opt-hint{font-size:.76rem;color:var(--text-tertiary);margin:6px 0 0;line-height:1.5}.vt-time-btn{display:inline-block;margin-left:8px;padding:5px 10px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);font-size:.76rem;color:var(--text-secondary);cursor:pointer;transition:all .2s;vertical-align:middle}.vt-time-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}.vt-slider{flex:1;max-width:280px;height:6px;-webkit-appearance:none;appearance:none;background:var(--bg-tertiary);border-radius:3px;outline:none;cursor:pointer}.vt-slider::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary);cursor:pointer;border:2px solid #fff}.vt-slider::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--primary);cursor:pointer;border:2px solid #fff}.vt-opacity-val{font-size:.82rem;color:var(--text-secondary);white-space:nowrap}.vt-opacity-val strong{color:var(--primary);font-size:1.05rem}.vt-actions{display:flex;gap:12px;flex-wrap:wrap}.vt-file-list{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.vt-file-item{display:flex;align-items:center;gap:12px;padding:10px 12px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);font-size:.88rem;transition:all .2s}.vt-file-item:hover{border-color:var(--primary)}.vt-file-num{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700}.vt-file-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}.vt-file-size{flex-shrink:0;color:var(--text-tertiary);font-size:.82rem}.vt-progress{margin-top:20px;padding:16px;background:var(--bg);border-radius:var(--radius);border:1px solid var(--border)}.vt-progress-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.vt-progress-status{font-size:.88rem;color:var(--text);font-weight:500;cursor:pointer}.vt-progress-pct{font-size:1.1rem;font-weight:700;color:var(--primary)}.vt-progress-track{height:8px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden}.vt-progress-fill{height:100%;background:var(--primary);border-radius:4px;transition:width .3s ease}.vt-progress-fill.indeterminate{width:30%!important;animation:vt-indeterminate 1.2s ease-in-out infinite;transition:none}@keyframes vt-indeterminate{0%{margin-left:0%}50%{margin-left:50%}to{margin-left:100%}}.vt-progress-log{margin-top:10px;max-height:100px;overflow-y:auto;font-size:.72rem;color:var(--text-tertiary);font-family:monospace;background:var(--bg-secondary);padding:8px;border-radius:var(--radius);border:1px solid var(--border)}.vt-result{margin-top:20px;padding:28px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);text-align:center}.vt-result-icon{font-size:3rem;margin-bottom:8px}.vt-result-title{font-size:1.25rem;font-weight:700;color:var(--text);margin-bottom:8px}.vt-result-info{font-size:.88rem;color:var(--text-secondary);margin-bottom:16px}.vt-result-preview{background:#000;border-radius:var(--radius);overflow:hidden;margin-bottom:16px;padding:8px}.vt-result-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.vt-error{margin-top:20px;padding:28px;background:#dc35450d;border:1px solid rgba(220,53,69,.2);border-radius:var(--radius);text-align:center}.vt-error-icon{font-size:3rem;margin-bottom:8px}.vt-error-title{font-size:1.15rem;font-weight:700;color:var(--text);margin-bottom:8px}.vt-error-msg{font-size:.86rem;color:var(--text-secondary);margin-bottom:16px;max-width:500px;margin-left:auto;margin-right:auto}.faq-section{max-width:800px;margin:0 auto;padding:48px 0}.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){.vt-tabs{flex-direction:column}.vt-opt-row{flex-direction:column;gap:6px}.vt-opt-label{width:100%;padding-top:0}.vt-select,.vt-input{max-width:100%}.vt-time-btn{display:block;margin-left:0;margin-top:6px}.vt-actions{flex-direction:column}}