*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f1117;--bg2: #1a1d27;--bg3: #22263a;--border: #2d3150;--accent: #4f7fff;--accent2: #7c5cfc;--success: #22c55e;--warning: #f59e0b;--danger: #ef4444;--text: #e2e8f0;--text2: #94a3b8;--text3: #64748b;--radius: 10px;--radius-lg:16px;font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif}body{background:var(--bg);color:var(--text);min-height:100vh}.app{display:flex;flex-direction:column;min-height:100vh}.header{display:flex;align-items:center;justify-content:space-between;padding:14px 28px;background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.header-title{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700}.header-title span{font-size:22px}.main{flex:1;display:flex;min-height:0}.sidebar{width:320px;flex-shrink:0;background:var(--bg2);border-right:1px solid var(--border);overflow-y:auto;padding:20px 16px;display:flex;flex-direction:column;gap:20px}.content{flex:1;overflow-y:auto;padding:28px;display:flex;flex-direction:column;gap:24px}.card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.card-title{font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;border:none;transition:opacity .15s,transform .1s;white-space:nowrap}.btn:hover{opacity:.88}.btn:active{transform:scale(.97)}.btn-primary{background:var(--accent);color:#fff}.btn-secondary{background:var(--bg3);color:var(--text);border:1px solid var(--border)}.btn-success{background:var(--success);color:#fff}.btn-sm{padding:5px 10px;font-size:12px}.btn:disabled{opacity:.45;cursor:not-allowed}.form-group{display:flex;flex-direction:column;gap:6px}.label{font-size:12px;color:var(--text2);font-weight:500}.input{background:var(--bg3);border:1px solid var(--border);border-radius:8px;padding:8px 12px;color:var(--text);font-size:13px;width:100%;transition:border-color .15s}.input:focus{outline:none;border-color:var(--accent)}.tabs{display:flex;gap:4px;padding:4px;background:var(--bg3);border-radius:10px}.tab{flex:1;padding:7px;border-radius:7px;font-size:13px;font-weight:500;cursor:pointer;border:none;background:transparent;color:var(--text2);transition:all .15s}.tab.active{background:var(--accent);color:#fff}.tab:hover:not(.active){color:var(--text)}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius-lg);padding:32px 20px;text-align:center;cursor:pointer;transition:all .2s;background:var(--bg3)}.upload-zone:hover,.upload-zone.drag-over{border-color:var(--accent);background:#4f7fff14}.upload-icon{font-size:36px;margin-bottom:10px}.upload-text{font-size:14px;color:var(--text2);line-height:1.6}.upload-hint{font-size:12px;color:var(--text3);margin-top:6px}.stats-row{display:flex;gap:10px;flex-wrap:wrap}.stat-chip{background:var(--bg3);border:1px solid var(--border);border-radius:8px;padding:10px 14px;display:flex;flex-direction:column;gap:2px;min-width:90px}.stat-num{font-size:20px;font-weight:700;color:var(--accent)}.stat-label{font-size:11px;color:var(--text3)}.funnel-wrap{overflow-x:auto}.funnel-svg-label{font-size:14px;fill:#fff;font-weight:600}.funnel-svg-sub{font-size:12px;fill:#ffffffd9}.conv-bar-wrap{display:flex;flex-direction:column;gap:10px}.conv-bar-row{display:flex;align-items:center;gap:10px}.conv-bar-label{width:120px;font-size:13px;color:var(--text2);text-align:right;flex-shrink:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-bar-track{flex:1;height:28px;background:var(--bg3);border-radius:6px;overflow:hidden;position:relative}.conv-bar-fill{height:100%;border-radius:6px;transition:width .4s ease}.conv-bar-count{flex-shrink:0;font-size:12px;font-weight:600;color:var(--text2);white-space:nowrap;min-width:72px;text-align:right}.conv-bar-right{width:60px;text-align:right;font-size:12px;color:var(--text3);flex-shrink:0}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:600}.badge-red{background:#ef444426;color:#f87171}.badge-orange{background:#f59e0b26;color:#fbbf24}.badge-green{background:#22c55e26;color:#4ade80}.badge-blue{background:#4f7fff26;color:#93c5fd}.badge-purple{background:#7c5cfc26;color:#c4b5fd}.hyp-card{border:1px solid var(--border);border-radius:var(--radius);padding:14px;background:var(--bg3);display:flex;flex-direction:column;gap:8px}.hyp-header{display:flex;align-items:center;justify-content:space-between}.confidence-dots{display:flex;gap:3px}.confidence-dot{width:8px;height:8px;border-radius:50%}.conf-filled{background:var(--warning)}.conf-empty{background:var(--bg);border:1px solid var(--border)}.rec-item{border:1px solid var(--border);border-radius:var(--radius);padding:14px;background:var(--bg3);display:flex;flex-direction:column;gap:6px}.rec-title{font-size:14px;font-weight:600;display:flex;align-items:center;gap:8px}.rec-detail{font-size:13px;color:var(--text2);line-height:1.6}.rec-impact{font-size:12px;color:var(--success)}.ab-card{border:1px solid var(--border);border-radius:var(--radius);padding:14px;background:var(--bg3);display:grid;grid-template-columns:1fr 1fr;gap:10px}.ab-card .ab-full{grid-column:1/-1}.ab-cell{display:flex;flex-direction:column;gap:3px}.ab-key{font-size:11px;color:var(--text3)}.ab-val{font-size:13px;color:var(--text)}.section-title{font-size:13px;font-weight:600;color:var(--text2);text-transform:uppercase;letter-spacing:.05em;margin-bottom:10px;display:flex;align-items:center;gap:6px}.empty-state{text-align:center;padding:60px 20px;color:var(--text3)}.empty-state .empty-icon{font-size:48px;margin-bottom:14px}.empty-state p{font-size:14px}.spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.2);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.alert{padding:10px 14px;border-radius:8px;font-size:13px}.alert-error{background:#ef44441f;color:#f87171;border:1px solid rgba(239,68,68,.3)}.alert-success{background:#22c55e1f;color:#4ade80;border:1px solid rgba(34,197,94,.3)}.divider{height:1px;background:var(--border);margin:4px 0}.step-arrow{text-align:center;color:var(--text3);font-size:18px;line-height:1}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;z-index:200;display:flex;align-items:center;justify-content:center}.modal{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;width:380px;display:flex;flex-direction:column;gap:16px}.modal-title{font-size:16px;font-weight:700}.tag-strip{display:flex;flex-wrap:wrap;gap:6px}.tag{padding:3px 8px;border-radius:5px;font-size:11px;background:var(--bg3);border:1px solid var(--border);color:var(--text2)}