/* One regression lesson; no style changes to other experiments. */
body[data-regression-lab]{--nav:208px;--paper:#F4F5F2;background:var(--paper);font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:#172E3C;line-height:1.65}body[data-regression-lab] main{max-width:1540px;margin:auto;padding:28px 30px 22px}body[data-regression-lab] [hidden]{display:none!important}
.rl-header{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:25px}.rl-header h1{font:600 34px/1.35 "Songti SC","STSong",serif;letter-spacing:0;margin:0}.rl-header p{font-size:16px;line-height:1.7;color:#476170;margin:10px 0 0}.rl-header .pn{flex-shrink:0;font-size:12px}.rl-lab{background:white;border:1px solid #DCE3E5;border-radius:22px;overflow:hidden;box-shadow:0 15px 40px #253C5006}.rl-context{padding:18px 24px;display:flex;align-items:center;gap:14px;border-bottom:1px solid #E7ECED}.rl-house-icon{width:45px;height:45px;display:grid;place-items:center;border-radius:13px;background:#EDF3FB;color:#356CB3;font-size:35px;line-height:1;flex:none}.rl-context strong{font-size:16px;font-weight:600}.rl-context p{font-size:13px;margin:3px 0 0;color:#4A626D}.rl-data-tag{margin-left:auto;white-space:nowrap;font-size:11px;background:#F1F4ED;border:1px solid #E0E7DA;padding:4px 9px;border-radius:7px;color:#536553}.rl-unit{white-space:nowrap}
.rl-modes{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:16px 24px 0;gap:10px}.rl-modes button{display:flex;gap:12px;align-items:center;text-align:left;padding:14px 16px;min-width:0;border:1px solid #DBE4E8;border-radius:12px;background:#FCFDFE;color:#425D70;font-size:15px;line-height:1.55;transition:background .2s,border-color .2s;cursor:pointer}.rl-modes svg{width:36px;height:26px;fill:none;stroke:currentColor;stroke-width:1.8;flex:none}.rl-modes span{font-weight:600}.rl-modes small{display:block;font-size:11px;font-weight:400;line-height:1.5;margin-top:2px}.rl-modes button[aria-selected=true]{color:#1F61B3;border-color:#86ACDC;background:#EEF5FE;box-shadow:inset 0 0 0 1px #86ACDC20}.rl-modes button:hover{border-color:#8AAFD9}.rl-toolbar{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:17px 24px;border-bottom:1px solid #E5EBEF;flex-wrap:wrap}.rl-data-switch{display:flex;align-items:center;gap:12px}.rl-data-switch>span{font-size:12px;color:#506673}.rl-data-switch>div{display:flex;gap:4px;background:#F1F4F6;padding:4px;border-radius:9px}.rl-lab button{cursor:pointer;font-family:inherit}.rl-data-switch button,.rl-actions button,.rl-orbit-tools button{font-size:12px;padding:7px 12px;min-height:36px;line-height:1.5;border-radius:7px;border:1px solid #CCD9E1;background:white;color:#2D556D;white-space:nowrap}.rl-data-switch button{background:transparent;border:0}.rl-data-switch button[aria-pressed=true]{background:white;color:#1C5DA8;box-shadow:0 2px 5px #365B7510}.rl-actions{display:flex;gap:8px;flex-wrap:wrap}.rl-actions .primary{background:#2566B7;color:white;border-color:#2566B7}.rl-actions button[aria-pressed=true]{background:#FFF3DF;border-color:#E6BD73;color:#966422}.rl-lab button:focus-visible,.rl-lab input:focus-visible,.rl-lab canvas:focus-visible{outline:3px solid #E4A841;outline-offset:3px}
.rl-scene-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding:19px 24px 8px}.rl-scene-heading b{font-size:16px}.rl-scene-heading p{font-size:13px;color:#516C78;line-height:1.65;margin:4px 0 0;max-width:64ch}.rl-check{font-size:12px;white-space:nowrap;margin-top:4px;display:flex;align-items:center;gap:6px}.rl-check input{accent-color:#346FBA}.rl-plots{padding:0 18px;display:grid;grid-template-columns:minmax(0,1fr);gap:12px}.rl-plots.has-slice{grid-template-columns:minmax(0,1.65fr) minmax(290px,1fr)}.rl-main-plot{position:relative;min-width:0}.rl-main-plot>canvas,.rl-space canvas,.rl-slice canvas{display:block;width:100%;height:470px}.rl-main-plot>canvas{cursor:crosshair;touch-action:pan-y}.rl-space{position:relative;border-radius:13px;overflow:hidden;background:#F8FBFE}.rl-space #rl-webgl{touch-action:none;cursor:grab;outline-offset:-4px}.rl-space #rl-webgl:active{cursor:grabbing}.rl-space #rl-labels{position:absolute;top:0;left:0;pointer-events:none}.rl-orbit-tools{position:absolute;bottom:10px;right:12px;left:12px;display:flex;align-items:center;justify-content:flex-end;gap:6px}.rl-orbit-tools span{font-size:11px;color:#516B7B;margin-right:auto}.rl-orbit-tools button{font-size:11px;padding:5px 9px;min-height:30px;background:#FFFFFFE8}.rl-selected{position:absolute;top:12px;left:66px;max-width:75%;padding:8px 12px;border:1px solid #D6E3EF;border-radius:8px;background:#FFFFFFED;font-size:12px;line-height:1.7;box-shadow:0 3px 14px #354E6810;pointer-events:none}.rl-slice{background:#FFFBF4;border:1px solid #F1DFBF;border-radius:14px;padding:17px 13px;min-width:0}.rl-slice-kicker{font-size:11px;letter-spacing:.02em;color:#A06B26}.rl-slice h2{font-size:19px;line-height:1.4;margin:7px 0 4px}.rl-slice h2 span{color:#AC6818}.rl-slice p{font-size:12px;margin:0;color:#725B3B}.rl-slice canvas{height:300px;margin-top:8px}.rl-slice-readout{font-size:13px;line-height:1.7;color:#79511E;padding:8px 7px 0}.rl-legend{display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px;padding:10px 25px 18px;font-size:12px;color:#4C6574}.rl-legend>span{display:flex;align-items:center;gap:7px}.rl-legend i{display:inline-block;width:8px;height:8px;border-radius:50%;flex:none}.rl-legend .blue{background:#4383C9}.rl-legend .line{width:19px;height:3px;border-radius:1px;background:#2566B7}.rl-legend .orange{background:#D98522}.rl-legend-hint{margin-left:auto;font-size:11px}
.rl-predict{display:grid;grid-template-columns:minmax(250px,1.45fr) minmax(180px,1fr) minmax(180px,1fr);gap:24px;margin:0 24px;padding:22px 0;border-top:1px solid #E2E9EC;align-items:stretch}.rl-query h2{font-size:15px;line-height:1.6;margin:0 0 11px}.rl-query label{display:flex;justify-content:space-between;align-items:baseline;font-size:13px;line-height:1.7;gap:12px}.rl-query label b{font-variant-numeric:tabular-nums;white-space:nowrap}.rl-query label small{font-size:11px;color:#677D86;margin-left:5px}.rl-query input[type=range]{accent-color:#D58B2D;display:block;width:100%;height:26px;margin:5px 0 12px;cursor:ew-resize}.rl-query input:last-child{margin-bottom:0}.rl-price-card{background:#FFF5E5;padding:17px 21px;border-radius:13px;display:flex;flex-direction:column;justify-content:center}.rl-price-card>span,.rl-error-card>span{font-size:12px;line-height:1.65}.rl-price{display:flex;align-items:baseline;gap:7px;white-space:nowrap;color:#A76015;line-height:1.2;margin:10px 0 4px}.rl-price b{font-size:42px;letter-spacing:-.03em;font-weight:600;font-variant-numeric:tabular-nums}.rl-price span{font-size:14px}.rl-price-card p,.rl-error-card p{font-size:12px;line-height:1.65;margin:5px 0 0}.rl-error-card{border-left:1px solid #E3E9EC;padding:15px 0 12px 24px;display:flex;flex-direction:column;justify-content:center}.rl-error-card>div{display:flex;gap:7px;align-items:baseline;margin:8px 0 0;white-space:nowrap}.rl-error-card b{font-size:28px;line-height:1.3;font-weight:600;font-variant-numeric:tabular-nums}.rl-error-card>div span{font-size:13px}.rl-error-card small{display:block;font-size:11px;line-height:1.6;color:#5D7482;margin-top:8px}.rl-insight{display:flex;gap:12px;align-items:flex-start;padding:15px 24px;background:#F0F5F9;border-top:1px solid #DCE7EF;font-size:14px;line-height:1.75}.rl-insight>span{font-size:9px;color:#477BB1;line-height:2.7}.rl-insight p{margin:0;text-wrap:pretty}.rl-footer{display:flex;justify-content:space-between;gap:18px;margin-top:17px;font-size:11px;line-height:1.7;color:#5E7380}.rl-footer>span:first-child{flex:none}
@media(max-width:1100px){body[data-regression-lab] main{padding:24px 20px}.rl-modes{padding:15px 18px 0;gap:8px}.rl-modes button{padding:12px;gap:8px;font-size:14px}.rl-modes svg{width:28px}.rl-modes small{font-size:10px}.rl-plots.has-slice{grid-template-columns:minmax(0,1.4fr) minmax(270px,1fr)}.rl-predict{gap:18px;grid-template-columns:minmax(220px,1.3fr) minmax(165px,1fr) minmax(160px,1fr)}.rl-price-card{padding:15px}.rl-error-card{padding-left:18px}.rl-header h1{font-size:30px}.rl-header .pn{display:none}}
@media(max-width:820px){body[data-regression-lab] main{padding:20px 13px}.rl-header{margin-bottom:18px}.rl-header h1{font-size:29px}.rl-header p{font-size:14px}.rl-lab{border-radius:17px}.rl-context{padding:16px;gap:11px;align-items:flex-start}.rl-context strong{font-size:15px}.rl-context p{font-size:12px;line-height:1.8}.rl-house-icon{width:36px;height:36px;font-size:29px}.rl-data-tag{display:none}.rl-modes{grid-template-columns:repeat(2,minmax(0,1fr));padding:14px 15px 0}.rl-modes button{padding:10px 12px;font-size:14px}.rl-modes small{font-size:11px}.rl-toolbar{padding:14px 16px;gap:13px}.rl-data-switch{width:100%;justify-content:space-between;gap:8px}.rl-data-switch>span{font-size:12px}.rl-actions{width:100%}.rl-actions button{flex:1;font-size:12px;padding:8px 10px;min-height:38px}.rl-scene-heading{padding:16px 16px 6px;flex-wrap:wrap;gap:7px}.rl-scene-heading b{font-size:15px}.rl-scene-heading p{font-size:12px;line-height:1.8}.rl-check{font-size:12px}.rl-plots{padding:0 9px}.rl-plots.has-slice{grid-template-columns:minmax(0,1fr)}.rl-slice{margin:0 6px 4px;padding:16px}.rl-slice canvas{height:280px}.rl-legend{padding:13px 16px;gap:8px 14px;font-size:11px}.rl-legend-hint{margin-left:0;flex-basis:100%}.rl-main-plot>canvas{height:360px}.rl-space canvas{height:320px}.rl-predict{margin:0 16px;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px 16px;padding:18px 0}.rl-query{grid-column:1/-1}.rl-price b{font-size:34px}.rl-error-card{padding-left:16px;padding-right:0}.rl-price-card>span,.rl-error-card>span{font-size:12px}.rl-error-card b{font-size:25px}.rl-insight{padding:14px 16px;font-size:13px}.rl-footer{font-size:10px}.rl-orbit-tools span{font-size:10px;max-width:110px}.rl-selected{left:43px;max-width:80%;font-size:11px;padding:6px 9px}}
@media(max-width:360px){.rl-header h1{font-size:26px}.rl-modes button{gap:7px;padding:10px 7px;font-size:13px}.rl-modes svg{width:24px}.rl-modes small{font-size:10px}.rl-data-switch{flex-wrap:wrap}.rl-predict{grid-template-columns:minmax(0,1fr)}.rl-query{grid-column:auto}.rl-error-card{border-left:0;border-top:1px solid #E3E9EC;padding:15px 0 0}.rl-price-card{padding:16px}.rl-actions button{font-size:11px;padding:7px}.rl-scene-heading p{font-size:12px}.rl-orbit-tools{left:8px;right:8px}.rl-orbit-tools button{font-size:10px;padding:5px 7px}}
@media(prefers-reduced-motion:reduce){body[data-regression-lab] *{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

/* Quiet, consistent slider tracks across browsers. */
.rl-query input[type=range]{appearance:none;-webkit-appearance:none;background:transparent;outline-offset:2px}.rl-query input[type=range]::-webkit-slider-runnable-track{height:5px;border-radius:8px;background:#DCE4E8}.rl-query input[type=range]::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:17px;height:17px;margin-top:-6px;border-radius:50%;background:#D88B27;border:3px solid #FFF;box-shadow:0 0 0 1px #D99C4A,0 2px 5px #684A1A1A}.rl-query input[type=range]::-moz-range-track{height:5px;border-radius:8px;background:#DCE4E8}.rl-query input[type=range]::-moz-range-thumb{width:12px;height:12px;border:3px solid #FFF;border-radius:50%;background:#D88B27;box-shadow:0 0 0 1px #D99C4A}