:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#fff;--bg-top:#fff;--bg-mid:#f4f4f5;--bg-bottom:#fff;--surface:#fff;--surface-2:#f4f4f5;--surface-3:#ebf5f5;--surface-glass:#fff;--plot-bg:#f6f9fc;--plot-stage:#f4f6f8;--text:#555;--text-strong:#17202a;--muted:#66717a;--line:#c7cacc;--line-strong:#9ea5aa;--axis:#6b747c;--accent:#1f82c0;--accent-strong:#0d5f90;--accent-soft:#eaf4fa;--accent-glow:#1f82c024;--hhi-green:#009474;--hhi-green-hover:#66bfac;--hhi-green-soft:#ebf5f5;--hhi-logo-green:#179c7d;--danger:#a52731;--shadow:none;--shadow-soft:none;font-family:FrutigerLTW02,Helvetica Neue,Helvetica,Arial,sans-serif;font-weight:200}*{box-sizing:border-box}[hidden]{display:none!important}body{background:var(--bg);min-height:100svh;color:var(--text);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0}::selection{background:#0094742e}button,select,input{font:inherit}button{cursor:pointer;color:inherit}.app-shell{grid-template-rows:auto auto minmax(0,1fr);width:100vw;max-width:100vw;height:100svh;min-height:100svh;margin:0 auto;display:grid;overflow:hidden}.topbar{border-bottom:1px solid var(--line);background:var(--surface);width:100%;min-height:0;box-shadow:none;z-index:10;grid-row:1;grid-template-columns:minmax(336px,1fr) minmax(0,auto);align-items:center;gap:10px 14px;padding:9px 14px;display:grid;position:sticky;top:0}.brand-lockup{align-items:center;gap:12px;min-width:0;display:flex}.hhi-logo{flex:none;align-items:center;width:clamp(136px,12vw,178px);max-width:24vw;text-decoration:none;display:flex}.hhi-logo img{width:100%;height:auto;display:block}.topbar-copy{border-left:1px solid var(--line);flex:auto;gap:2px;min-width:0;padding-left:12px;display:grid;overflow:hidden}h1,h2,p{margin:0}h1{color:var(--accent);letter-spacing:0;text-overflow:ellipsis;white-space:nowrap;font-size:22px;font-weight:400;line-height:1.1;overflow:hidden}h2{color:var(--accent);letter-spacing:0;font-size:15px;font-weight:400;line-height:1.15}.muted{color:var(--muted);font-size:12px;line-height:1.25}.topbar-copy .muted{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.topbar-actions{flex-wrap:nowrap;justify-content:flex-end;justify-self:end;align-items:flex-end;gap:8px;min-width:0;max-width:100%;display:flex}.topbar-links{flex-wrap:nowrap;flex:none;justify-content:flex-end;align-items:center;gap:2px;min-width:0;min-height:30px;display:flex}.topbar-link{min-height:28px;color:var(--accent);letter-spacing:.075em;text-transform:uppercase;white-space:nowrap;border:1px solid #0000;border-radius:0;justify-content:center;align-items:center;padding:0 7px;font-size:11px;font-weight:400;line-height:1;text-decoration:none;display:inline-flex}.topbar-link:hover,.topbar-link:focus-visible{border-color:var(--hhi-green);background:var(--hhi-green);color:#fff;text-decoration:none}.topbar-link:focus-visible{outline:2px solid var(--hhi-green);outline-offset:2px}.topbar-controls{flex-wrap:nowrap;flex:auto;align-items:flex-end;gap:6px;min-width:0;display:flex}.topbar-control{min-width:0;color:var(--muted);letter-spacing:.075em;text-transform:uppercase;gap:4px;font-size:11px;font-weight:400;display:grid}.problem-control{flex:clamp(170px,19vw,280px);width:clamp(170px,19vw,280px);min-width:160px}.quality-control{flex:0 0 118px}.topbar .quality-switch{width:118px}.topbar select{min-height:32px}.topbar .icon-button{width:32px;height:32px}label{color:var(--muted);letter-spacing:.075em;text-transform:uppercase;gap:4px;font-size:11px;font-weight:400;display:grid}select,input[type=range]{width:100%}select{border:1px solid var(--line);appearance:none;background:linear-gradient(45deg, transparent 50%, var(--accent) 50%) right 13px center / 5px 5px no-repeat, linear-gradient(135deg, var(--accent) 50%, transparent 50%) right 8px center / 5px 5px no-repeat, var(--surface);min-height:34px;color:var(--accent);box-shadow:none;letter-spacing:.04em;border-radius:0;padding:0 32px 0 10px;font-weight:400;transition:border-color .14s,background-color .14s}select:hover{border-color:var(--hhi-green);color:var(--hhi-green)}select:focus-visible,button:focus-visible,input[type=range]:focus-visible{outline:2px solid var(--hhi-green);outline-offset:2px}.icon-button{background:var(--accent);color:#fff;width:34px;height:34px;box-shadow:none;border:0;border-radius:0;place-items:center;transition:background-color .12s,color .12s;display:grid}.icon-button svg{fill:none;stroke:currentColor;stroke-width:2px;stroke-linecap:round;stroke-linejoin:round;width:18px;height:18px}.icon-button:hover{background:var(--hhi-green);color:#fff}.message{border:1px solid var(--danger);color:var(--danger);box-shadow:var(--shadow-soft);background:#fff7f8;border-radius:0;grid-row:2;margin:10px 18px 0;padding:10px 12px;font-size:13px}.workspace{grid-row:3;min-width:0;height:100%;min-height:0;padding:12px 18px 16px;display:block}.plot-panel{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);border-radius:0}.segmented{border:1px solid var(--line);background:var(--surface);min-height:32px;box-shadow:none;border-radius:0;grid-auto-columns:1fr;grid-auto-flow:column;padding:0;display:grid}.segmented button{min-width:0;min-height:30px;color:var(--accent);letter-spacing:.075em;text-transform:uppercase;background:0 0;border:0;border-radius:0;padding:0 9px;font-size:11px;font-weight:400;transition:background-color .12s,color .12s}.segmented button+button{border-left:1px solid var(--line)}.quality-switch{width:128px}.segmented button.active{background:var(--accent);color:#fff;box-shadow:none}.segmented button:not(.active):hover{color:#fff;background:var(--hhi-green)}.plot-grid{grid-template-rows:minmax(0,1fr);grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;width:100%;min-width:0;max-width:100%;height:100%;min-height:0;display:grid}.plot-panel{grid-template-rows:auto minmax(0,1fr);min-width:0;min-height:0;display:grid;position:relative;overflow:hidden}.model-panel:before,.train-panel:before{content:"";z-index:4;background:var(--accent);pointer-events:none;height:4px;position:absolute;top:0;left:0;right:0}.train-panel:before{background:var(--hhi-green)}.plot-grid[data-layout=column]{grid-template-columns:minmax(0,1fr)}.plot-header{border-bottom:1px solid var(--line);background:var(--surface);z-index:3;min-width:0;box-shadow:none;flex-wrap:nowrap;justify-content:space-between;align-items:center;gap:8px;padding:12px 10px 9px;display:flex;position:relative}.plot-title-group{flex:150px;gap:2px;min-width:72px;display:grid}.plot-header .muted{text-overflow:ellipsis;white-space:nowrap;font-variant-numeric:tabular-nums;min-width:0;overflow:hidden}.selection-readout{min-width:0;color:var(--muted);font-variant-numeric:tabular-nums;box-shadow:none;background:0 0;border:0;flex-wrap:nowrap;flex:2 260px;justify-content:flex-end;align-items:baseline;gap:8px;padding:1px 0;font-size:10.5px;line-height:1.15;display:flex}.readout-item{white-space:nowrap;align-items:baseline;gap:4px;min-width:0;display:inline-flex}.readout-point{flex:auto;justify-content:flex-end}.readout-scalar{flex:none}.readout-label{color:var(--axis);flex:none;font-size:10px;font-weight:400}.readout-value{text-overflow:clip;white-space:nowrap;min-width:0;color:var(--text-strong);font-weight:400;overflow:visible}.readout-point .readout-value{flex:none;max-width:none}.readout-scalar .readout-value{flex:none}.plot-actions{flex:auto;justify-content:flex-end;align-items:center;min-width:0;display:flex;overflow:hidden}.plot-control{min-width:0;color:var(--muted);align-items:center;font-size:11px;font-weight:400;display:flex}.plot-control select{width:100%;min-width:0}.plot-controls{flex-wrap:nowrap;justify-content:flex-end;align-items:center;gap:6px;width:100%;min-width:0;display:flex;overflow:hidden}.model-actions{flex:0 160px}.train-actions{flex:380px}.field-control{flex:0 0 58px;min-width:54px;container-type:inline-size}.matrix-control{flex:0 0 82px;min-width:76px;container-type:inline-size}.sign-control{flex:0 0 76px;container-type:inline-size}.k-control{flex:96px;grid-template-columns:auto minmax(48px,1fr);align-items:center;gap:6px;min-width:68px;display:grid}.background-control{flex:0 0 122px;min-width:112px;container-type:inline-size}.plot-controls select{background:linear-gradient(45deg, transparent 50%, var(--accent) 50%) right 9px center / 4px 4px no-repeat, linear-gradient(135deg, var(--accent) 50%, transparent 50%) right 5px center / 4px 4px no-repeat, var(--surface);min-height:30px;padding:0 20px 0 7px;font-size:clamp(10px,16cqw,12px);line-height:1}.matrix-control select{padding-left:6px;padding-right:18px;font-size:clamp(10px,13cqw,11.5px)}.plot-controls .segmented{width:100%;min-width:0;min-height:30px}.plot-controls .segmented button{white-space:nowrap;min-height:24px;padding:0 6px;font-size:clamp(9px,10cqw,11px);line-height:1}.sign-control .segmented button{padding:0 2px;font-size:clamp(8.5px,13cqw,10px);font-weight:400}.k-control output{width:3ch;color:var(--text-strong);font-variant-numeric:tabular-nums;text-align:right;justify-self:end}.k-control input[type=range]{width:100%;min-width:0}.train-header{align-items:center}.train-header .plot-title-group{flex:0 100px;min-width:52px}.plot-body{background:var(--plot-bg);min-height:0;position:relative}.plot-body:before{content:"";pointer-events:none;opacity:.45;z-index:0;background-color:#0000;background-image:linear-gradient(#c7cacc38 1px,#0000 1px),linear-gradient(90deg,#c7cacc38 1px,#0000 1px);background-position:0 0,0 0;background-repeat:repeat,repeat;background-size:32px 32px;background-attachment:scroll,scroll;background-origin:padding-box,padding-box;background-clip:border-box,border-box;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#0000,#000 18% 82%,#0000);mask-image:linear-gradient(#0000,#000 18% 82%,#0000)}.plot-panel[data-loading=true] .plot-body:after{content:"";pointer-events:none;z-index:2;background:linear-gradient(100deg,#0000 0%,#1f82c01f 46%,#0000 62%);animation:1.05s ease-in-out infinite loading-sheen;position:absolute;inset:0}@keyframes loading-sheen{0%{transform:translate(-72%)}to{transform:translate(72%)}}canvas,.plot-overlay{width:100%;height:100%;display:block}canvas{background:var(--plot-bg);cursor:crosshair;touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;z-index:1;position:relative}.plot-overlay{pointer-events:none;z-index:2;position:absolute;inset:0;overflow:visible}.train-summary-badge{z-index:1;border:1px solid var(--line);min-width:0;max-width:calc(100% - 16px);color:var(--text-strong);box-shadow:none;font-variant-numeric:tabular-nums;text-overflow:ellipsis;white-space:nowrap;pointer-events:none;background:#fffffff0;border-radius:0;padding:2px 6px;font-size:10px;font-weight:400;line-height:1.05;position:absolute;overflow:hidden}.model-interaction-hint{z-index:4;border:1px solid var(--accent);color:#fff;max-width:min(360px,100% - 32px);box-shadow:none;letter-spacing:.075em;text-align:center;text-shadow:none;text-transform:uppercase;pointer-events:none;opacity:0;background:#1f82c0f5;border-radius:0;padding:8px 12px;font-size:12px;font-weight:400;line-height:1.2;transition:opacity .42s,transform .42s cubic-bezier(.16,1,.3,1);position:absolute;top:clamp(12px,7%,32px);left:50%;transform:translate(-50%,-6px)scale(.98)}.model-interaction-hint[data-state=visible]{opacity:1;transition-duration:.24s;transform:translate(-50%)scale(1)}.axis path,.axis line{stroke:#55555585;stroke-width:var(--plot-axis-stroke-width,1px);shape-rendering:crispedges}.axis text,.colorbar-ticks text{fill:var(--muted);font-variant-numeric:tabular-nums;paint-order:stroke fill;stroke:#f7fafcdb;stroke-linejoin:round;stroke-width:3px;font-size:10px;font-weight:400}.axis-label{fill:var(--text-strong);paint-order:stroke fill;stroke:#f7fafce6;stroke-linejoin:round;stroke-width:3px;font-size:11px;font-weight:400}.axis-frame{fill:none;stroke:#5555559e;stroke-width:var(--plot-axis-stroke-width,1px)}.colorbar-track{stroke:none}.colorbar-frame{fill:none;stroke:#5555559e;stroke-width:var(--plot-axis-stroke-width,1px)}.colorbar-ticks line{stroke:#55555585;stroke-width:var(--plot-axis-stroke-width,1px);shape-rendering:crispedges}.colorbar-ticks text{font-size:9px}.contours path{fill:none;stroke:#11182733;stroke-width:var(--plot-contour-stroke-width,.7px);vector-effect:non-scaling-stroke}output{color:var(--text-strong);font-variant-numeric:tabular-nums;justify-self:end}input[type=range]{accent-color:var(--hhi-green);appearance:none;cursor:pointer;background:0 0;height:28px}input[type=range]::-webkit-slider-runnable-track{background:linear-gradient(90deg, var(--hhi-green) 0%, var(--hhi-green) var(--range-progress,10%), var(--line) var(--range-progress,10%), var(--line) 100%);border-radius:999px;height:4px}input[type=range]::-webkit-slider-thumb{appearance:none;border:2px solid var(--surface);background:var(--hhi-green);border-radius:50%;width:16px;height:16px;margin-top:-6px;box-shadow:0 1px 4px #11182738}input[type=range]::-moz-range-track{background:linear-gradient(90deg, var(--hhi-green) 0%, var(--hhi-green) var(--range-progress,10%), var(--line) var(--range-progress,10%), var(--line) 100%);border-radius:999px;height:4px}input[type=range]::-moz-range-thumb{border:2px solid var(--surface);background:var(--hhi-green);border-radius:50%;width:14px;height:14px;box-shadow:0 1px 4px #11182738}.switch-input{appearance:none;border:1px solid var(--line);background:var(--surface-2);cursor:pointer;border-radius:999px;width:38px;height:22px;margin:0;transition:background-color .12s,border-color .12s;position:relative}.switch-input:before{content:"";background:var(--surface);border-radius:50%;width:16px;height:16px;transition:transform .12s;position:absolute;top:2px;left:2px;box-shadow:0 1px 3px #19263438}.switch-input:checked{border-color:var(--hhi-green);background:var(--hhi-green)}.switch-input:checked:before{transform:translate(16px)}.switch-input:focus-visible{outline:2px solid var(--hhi-green);outline-offset:2px}@media (width<=1040px){.plot-grid{min-height:0}}@media (width<=1180px){.topbar{grid-template-columns:minmax(310px,1fr) minmax(0,auto);gap:8px 10px;padding:8px 12px}.brand-lockup{gap:10px}.hhi-logo{width:clamp(118px,13vw,150px);max-width:20vw}.topbar-copy{padding-left:10px}.topbar-actions{gap:6px}.topbar-links{gap:1px}.topbar-link{letter-spacing:.055em;padding:0 4px;font-size:10px}.problem-control{flex-basis:clamp(144px,16vw,230px);width:clamp(144px,16vw,230px);min-width:140px}.quality-control{flex-basis:112px}.topbar .quality-switch{width:112px}.topbar .segmented button{padding:0 6px}.topbar .icon-button{width:30px;height:30px}}@media (width<=900px){.topbar{grid-template-columns:minmax(0,1fr);align-items:stretch;gap:5px;padding:7px 10px}.hhi-logo{width:clamp(112px,16vw,132px);max-width:22vw}.topbar-actions{grid-template-columns:auto minmax(0,1fr);justify-self:stretch;align-items:end;gap:8px;width:100%;display:grid}.topbar-links{justify-content:flex-start}.topbar-controls{justify-content:flex-end}}@media (width<=720px){.app-shell{grid-template-rows:auto auto minmax(0,1fr)}.topbar{grid-template-columns:minmax(0,1fr);align-items:stretch;gap:5px;min-height:0;padding:8px 10px}.brand-lockup{flex:none;gap:8px;width:100%}.hhi-logo{width:clamp(96px,30vw,118px);max-width:32vw}.topbar-copy{flex:auto;grid-template-columns:minmax(0,1fr);align-items:baseline;gap:2px;width:auto;padding-left:8px}h1{font-size:17px}h2{font-size:13px}.topbar-copy .muted{text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:11px;overflow:hidden}.topbar-actions{grid-template-columns:minmax(0,1fr);justify-content:stretch;align-items:stretch;gap:4px;width:100%;display:grid}.topbar-links{justify-content:flex-start;gap:1px;min-height:24px;overflow:visible}.topbar-link{letter-spacing:.05em;min-height:24px;padding:0 5px;font-size:10px}.topbar-controls{grid-template-columns:minmax(0,1fr) 108px 30px;align-items:end;gap:5px;display:grid}.topbar-control{gap:3px;font-size:11px}.problem-control{width:auto;min-width:0}.quality-control,.topbar .quality-switch{width:108px}.topbar-controls .icon-button{align-self:end}select{background:linear-gradient(45deg, transparent 50%, var(--accent) 50%) right 12px center / 5px 5px no-repeat, linear-gradient(135deg, var(--accent) 50%, transparent 50%) right 7px center / 5px 5px no-repeat, var(--surface);min-height:30px;padding-left:8px;padding-right:28px}.segmented{min-height:30px}.segmented button{min-height:24px;padding:0 7px;font-size:11px}.message{margin:8px 10px 0}.workspace{padding:8px 10px 10px}.plot-grid{gap:8px;min-height:0}.plot-header{gap:6px;padding:9px 7px 6px}.selection-readout{flex:2 170px;gap:5px;padding:1px 0;font-size:10px}.readout-label{font-size:10px}.readout-point .readout-value{max-width:none}.plot-title-group{flex:82px;gap:1px;min-width:58px}.train-header .plot-title-group{flex:0 44px;min-width:36px}.plot-header .muted{max-width:112px;font-size:10px}.plot-actions{gap:6px}.plot-controls{gap:4px}.model-actions{flex-basis:116px}.train-actions{flex-basis:260px}.field-control{flex-basis:54px;min-width:44px}.matrix-control{flex-basis:78px;min-width:72px}.sign-control{flex-basis:64px}.k-control{grid-template-columns:auto minmax(38px,1fr);gap:4px;min-width:58px}.background-control{flex-basis:104px;min-width:96px}.plot-controls .segmented button{padding:0 4px}.sign-control .segmented button{padding:0 1px}.icon-button{width:30px;height:30px}.icon-button svg{width:16px;height:16px}.model-interaction-hint{max-width:calc(100% - 18px);padding:7px 9px;font-size:12px;top:10px}input[type=range]{height:24px}}@media (width>=721px){.plot-grid{min-height:0}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:1ms!important;animation-duration:1ms!important;animation-iteration-count:1!important}.icon-button:hover{transform:none}.model-interaction-hint,.model-interaction-hint[data-state=hidden],.model-interaction-hint[data-state=visible]{transform:translate(-50%)!important}}