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auto;line-height:0}.fml-plot-wrap>svg{display:block;width:100%;height:auto;touch-action:pan-y}.fml-function-path{stroke:var(--fml-violet);stroke-width:3.2;fill:none;stroke-linejoin:round;stroke-linecap:round}.fml-plot-labels{font:19px Nunito,system-ui,sans-serif;fill:var(--fml-muted)}.fml-key-point text{font:800 19px Nunito,system-ui,sans-serif;paint-order:stroke;stroke:var(--fml-plot-bg);stroke-width:4px;stroke-linejoin:round}.fml-legend{display:flex;align-items:center;justify-content:center;gap:10px 17px;flex-wrap:wrap;margin:0 0 17px}.fml-legend label{font-size:9px;font-weight:700;display:inline-flex;align-items:center;gap:5px;cursor:pointer;color:var(--fml-muted)}.fml-legend input{margin:0;width:13px;height:13px;accent-color:var(--fml-violet)}.fml-legend label:nth-child(1) input{accent-color:var(--fml-root)}.fml-legend label:nth-child(2) input{accent-color:var(--fml-vertex)}.fml-legend label:nth-child(3) input{accent-color:var(--fml-intercept)}.fml-probe{display:grid;grid-template-columns:1fr auto;gap:5px 14px;padding:15px 17px;border-radius:9px;background:var(--fml-lilac);color:var(--fml-lilac-ink)}.fml-probe>div{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:12px}.fml-probe label{font-size:10px;font-weight:900}.fml-probe span{font-size:10px;font-variant-numeric:tabular-nums}.fml-probe input[type=range]{height:31px;align-self:center}.fml-play{background:var(--fml-card);border:1px solid #d9d0e9;color:var(--fml-violet);font-size:9px!important;font-weight:900!important;min-height:34px;min-width:81px;border-radius:7px;padding:5px 9px}.fml-chart-note{font-size:9px;line-height:1.8;color:var(--fml-muted);margin:13px 0 0}.fml-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.fml-stats article{border:1px solid var(--fml-border);background:var(--fml-card);border-radius:10px;padding:16px 18px;min-width:0}.fml-stats 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form>.fml-btn{width:100%}.fml-hint{border-top:1px solid var(--fml-border);padding-top:13px;margin-top:22px;font-size:11px;color:var(--fml-muted);line-height:1.85}.fml-hint summary,.fml-steps summary,.fml-solve-graph>summary{cursor:pointer;font-size:11px;font-weight:800;color:var(--fml-violet);min-height:34px;padding:5px 0}.fml-hint p{margin:9px 0 0}.fml-solve-aside{display:grid;gap:21px}.fml-solve-guide{padding:27px;border:1px solid var(--fml-border);border-radius:14px;background:var(--fml-lilac)}.fml-solve-guide ol{list-style:none;counter-reset:guide;margin:20px 0;padding:0}.fml-solve-guide li{counter-increment:guide;position:relative;padding:0 0 19px 28px;font-size:12px;line-height:1.85;color:var(--fml-lilac-ink)}.fml-solve-guide li:last-child{padding-bottom:0}.fml-solve-guide li:before{content:counter(guide,decimal-leading-zero);position:absolute;left:0;top:2px;font-size:9px;font-weight:900;color:#a18bbf}.fml-solve-guide>p{font-size:10px;line-height:1.85;color:var(--fml-muted);margin:0;border-top:1px solid #ded5ed;padding-top:17px}.fml-solve-graph{padding:13px 17px;border:1px solid var(--fml-border);border-radius:11px;background:var(--fml-card)}.fml-solve-graph .fml-chart-card{border:0;padding:17px 0 0;border-radius:0}.fml-solve-graph .fml-chart-top h3{font-size:21px}.fml-solve-graph .fml-chart-top>.fml-view-controls{display:none}.fml-solve-graph .fml-equation{font-size:25px}.fml-retry-note{font-size:11px;line-height:1.8;background:var(--fml-lilac);color:var(--fml-lilac-ink);border-left:3px solid #b6a3d0;padding:13px 16px}.fml-result-score{font:500 29px Georgia,serif;display:block;margin:15px 0 20px;letter-spacing:-.03em}.fml-field-results{display:grid;gap:11px}.fml-field-results>div{padding:15px 17px;border-radius:9px;background:var(--fml-card);border:1px solid #e3d8c8;display:grid;grid-template-columns:1fr auto;gap:8px 12px;color:var(--fml-ink)}.fml-field-results>div[data-status=correct]{border-color:#c8dacd}.fml-field-results b{font-size:11px}.fml-field-results span{font-size:9px;color:#9a7054;font-weight:900}.fml-field-results [data-status=correct] span{color:#4e805d}.fml-field-results small{font-size:10px;color:var(--fml-muted);grid-column:1/-1}.fml-field-results p{font-size:11px;grid-column:1/-1;margin:0}.fml-field-results p strong{font:500 19px Georgia,serif;color:var(--fml-violet)}.fml-steps{padding-top:15px;margin-top:18px;border-top:1px solid #e0d3c0}.fml-steps ol{padding-left:20px;font-size:11px;line-height:1.95;margin:9px 0 0}.fml-steps li{padding:5px 0 5px 5px}.fml-footer{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--fml-border);padding-top:21px;margin-top:36px;color:var(--fml-muted);font-size:9px;line-height:1.8}.fml-dialog-overlay{position:fixed;inset:0;background:#18213b80;z-index:4500;display:grid;place-items:center;padding:20px}.fml-dialog{max-width:480px;width:100%;border:1px solid var(--fml-border);border-radius:15px;background:var(--fml-card);padding:29px;box-shadow:0 20px 70px #0003}.fml-dialog h2{font:500 30px/1.3 Georgia,serif;margin:12px 0 15px;letter-spacing:-.025em}.fml-dialog p{font-size:12px;line-height:1.85;color:var(--fml-muted)}.fml-dialog>div{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}@keyframes fml-trace{from{stroke-dashoffset:500}to{stroke-dashoffset:0}}
.dark .fml-app,[data-theme=dark] .fml-app{--fml-ink:#e3eaf4;--fml-muted:#a3b2c7;--fml-card:#1d2d3d;--fml-wash:#132231;--fml-border:#344355;--fml-violet:#b6a0e5;--fml-violet-deep:#cfbef0;--fml-lilac:#2c2a42;--fml-lilac-ink:#d0c4e5;--fml-grid:#354354;--fml-axis:#7e8b9e;--fml-plot-bg:#192936;--fml-root:#8ebbb0;--fml-vertex:#d3ac82;--fml-intercept:#c79bbf;--fml-probe:#b6a0e5;--fml-negative:#d1a08b;--fml-positive:#8db6a7}.dark .fml-hero,[data-theme=dark] .fml-hero{background:linear-gradient(120deg,#2d2b44,#303039);border-color:#4a435f;color:#e3daf3}.dark .fml-hero p,.dark .fml-tags,[data-theme=dark] .fml-hero p,[data-theme=dark] .fml-tags{color:#b8adc9}.dark .fml-hero-art,[data-theme=dark] .fml-hero-art{filter:brightness(.9)}.dark .fml-family>button[aria-pressed=true],[data-theme=dark] .fml-family>button[aria-pressed=true]{border-color:#7d699b;box-shadow:inset 0 0 0 1px #7d699b}.dark .fml-equation .fml-coeff-a,[data-theme=dark] .fml-equation .fml-coeff-a{color:#baa3e6}.dark .fml-equation .fml-coeff-b,[data-theme=dark] .fml-equation .fml-coeff-b{color:#d6aa8e}.dark .fml-equation .fml-coeff-c,[data-theme=dark] .fml-equation .fml-coeff-c{color:#9bc9bd}.dark .fml-feedback.is-correct,[data-theme=dark] .fml-feedback.is-correct{background:#263e34;border-color:#466252;color:#b1cfbb}.dark .fml-feedback.is-review,[data-theme=dark] .fml-feedback.is-review{background:#3d342b;border-color:#66533d;color:#ddc3a1}.dark .fml-field-results>div,[data-theme=dark] .fml-field-results>div{border-color:#66533d}.dark .fml-field-results>div[data-status=correct],[data-theme=dark] .fml-field-results>div[data-status=correct]{border-color:#466252}.dark .fml-field-results span,[data-theme=dark] .fml-field-results span{color:#d4ae8e}.dark .fml-field-results [data-status=correct] span,[data-theme=dark] .fml-field-results [data-status=correct] span{color:#a3c7ae}.dark .fml-mission,.dark .fml-probe,.dark .fml-think,[data-theme=dark] .fml-mission,[data-theme=dark] .fml-probe,[data-theme=dark] .fml-think{border-color:#514260}.dark .fml-mission ul,.dark .fml-solve-guide>p,.dark .fml-steps,[data-theme=dark] .fml-mission ul,[data-theme=dark] .fml-solve-guide>p,[data-theme=dark] .fml-steps{border-color:#514260}
@media(max-width:1100px){.fml-app{padding:24px 26px 43px}.fml-hero{padding:31px;gap:22px}.fml-hero h1{font-size:43px}.fml-workspace{grid-template-columns:minmax(240px,.78fr) minmax(0,1.4fr);gap:19px}.fml-controls{padding:23px 20px}.fml-chart-card{padding:20px 18px 17px}.fml-chart-top{align-items:start}.fml-chart-top h3{font-size:22px}.fml-coeff-top>label{font-size:9px}.fml-coeff-symbol{width:29px;flex-basis:29px}.fml-coeff-top input[type=number]{width:64px}.fml-workspace-task{grid-template-columns:minmax(0,1fr) minmax(0,1.3fr)}.fml-challenge-card{padding:24px}.fml-challenge-card>h3{font-size:27px}.fml-view-controls{flex-basis:100px}.fml-bottom-grid{gap:19px}.fml-sign-card,.fml-table-card{padding:22px}.fml-solve-layout{grid-template-columns:minmax(0,1.3fr) minmax(250px,.9fr)}.fml-solve-card{padding:27px}.fml-solve-guide{padding:22px}.fml-section-head h2{font-size:31px}}
@media(max-width:820px){.fml-app{padding:22px 21px 40px}.fml-hero{grid-template-columns:1fr;padding:31px;gap:15px}.fml-hero h1{font-size:44px}.fml-hero-art{max-width:360px}.fml-hero p{max-width:none}.fml-workspace{grid-template-columns:1fr}.fml-controls{padding:25px}.fml-controls .fml-coeff-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:23px}.fml-controls .fml-coeff-top{align-items:start;flex-direction:column}.fml-controls .fml-coeff-top>label{min-height:35px}.fml-controls .fml-coeff-top input[type=number]{width:100%}.fml-controls .fml-control-note{margin-top:15px}.fml-controls .fml-preset-row{display:flex;align-items:end;justify-content:space-between;gap:15px}.fml-preset-row label{flex:1}.fml-preset-row>.fml-btn{min-height:44px}.fml-think{margin-top:19px}.fml-chart-card{padding:23px 25px 20px}.fml-chart-top h3{font-size:26px}.fml-plot-wrap{max-width:530px}.fml-equation{font-size:32px}.fml-bottom-grid{grid-template-columns:1fr}.fml-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.fml-workspace-task{grid-template-columns:1fr}.fml-challenge-card{position:static}.fml-choices{display:grid;grid-template-columns:1fr 1fr;gap:10px}.fml-choices legend{grid-column:1/-1}.fml-choice{margin:0}.fml-task-actions>.fml-btn-primary{flex:initial}.fml-mission{grid-template-columns:1fr;gap:17px}.fml-mission ul{border-left:0;border-top:1px solid #d8cce6;padding:12px 0 0;display:flex;gap:5px 25px;flex-wrap:wrap}.fml-controls .fml-task-actions{display:flex}.fml-solve-layout{grid-template-columns:1fr}.fml-solve-aside{grid-template-columns:1fr 1fr;align-items:start}.fml-solve-graph{min-width:0}.fml-solve-guide li{font-size:11px}.fml-solve-graph .fml-chart-top h3{font-size:20px}.fml-solve-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.fml-footer{font-size:8px;gap:15px}}
@media(max-width:550px){.fml-app{padding:16px 15px 34px}.fml-topbar{align-items:start;flex-direction:column;gap:4px;margin-bottom:18px}.fml-topbar>a{font-size:11px;min-height:32px}.fml-topbar>span{font-size:7px}.fml-hero{padding:25px 22px 17px;border-radius:15px;margin-bottom:22px;gap:12px}.fml-hero h1{font-size:39px;margin:11px 0 16px}.fml-hero h1 br{display:none}.fml-hero p{font-size:12px;line-height:1.85}.fml-kicker{font-size:8px;letter-spacing:.13em}.fml-tags{font-size:8px;gap:7px 12px}.fml-hero-art{max-width:330px}.fml-tabs{padding:4px;gap:3px;margin-bottom:25px;border-radius:10px}.fml-tabs>button{font-size:10px;min-height:52px;flex-direction:column;gap:1px;padding:4px 2px}.fml-tabs>button small{font-size:7px}.fml-section-head{margin-bottom:20px}.fml-section-head h2{font-size:29px;line-height:1.25}.fml-section-head p{font-size:11px}.fml-family{gap:10px;margin-bottom:17px}.fml-family>button{flex-direction:column;align-items:start;justify-content:center;gap:7px;min-height:86px;padding:14px}.fml-family>button strong{font-size:10px}.fml-family>button span{font-size:17px}.fml-workspace{gap:17px}.fml-controls{padding:23px 20px}.fml-controls h3{font-size:27px;margin-bottom:20px}.fml-controls .fml-coeff-list{grid-template-columns:1fr;gap:24px}.fml-controls .fml-coeff-top{flex-direction:row;align-items:center}.fml-controls .fml-coeff-top>label{font-size:10px;min-height:0}.fml-controls .fml-coeff-top input[type=number]{width:77px;font-size:17px;min-height:43px}.fml-coeff-symbol{width:34px;flex-basis:34px}.fml-controls .fml-preset-row{flex-direction:column;align-items:stretch;gap:12px}.fml-preset-row label{font-size:11px}.fml-app select{font-size:16px;padding:10px;min-height:46px}.fml-control-note{font-size:9px}.fml-chart-card{padding:21px 14px 17px;border-radius:13px}.fml-chart-top{gap:12px;align-items:start;padding:0 5px}.fml-chart-top h3{font-size:22px}.fml-chart-top .fml-kicker{font-size:7px}.fml-view-controls{flex-basis:95px}.fml-view-controls select{min-height:35px;font-size:13px;padding:6px 8px}.fml-view-controls label{font-size:7px}.fml-view-controls>span{font-size:6px}.fml-chart-card [data-fml-equation]{padding-top:23px}.fml-equation{font-size:25px}.fml-equation-label{font-size:6px}.fml-legend{gap:9px 12px;margin-bottom:13px;padding:0 5px}.fml-legend label{font-size:8px;min-height:30px}.fml-legend input{width:14px;height:14px}.fml-probe{padding:14px 13px;gap:8px 10px}.fml-probe>div{flex-direction:column;align-items:start;gap:4px}.fml-probe label{font-size:10px}.fml-probe span{font-size:9px}.fml-play{min-height:38px;min-width:76px}.fml-chart-note{font-size:11px;line-height:1.75;padding:0 4px}.fml-plot-labels{font-size:28px}.fml-key-point text{font-size:28px;stroke-width:6px}.fml-stats{gap:10px}.fml-stats article{padding:15px 14px}.fml-stats article>span{font-size:6px}.fml-stats article>strong{font-size:17px}.fml-analysis-note{font-size:9px;padding:13px 15px}.fml-bottom-grid{gap:17px;margin-top:17px}.fml-sign-card,.fml-table-card{padding:23px 20px}.fml-sign-card h3,.fml-table-card h3{font-size:26px}.fml-sign-legend{font-size:8px;gap:8px 12px}.fml-sign-card p{font-size:11px}.fml-sign-card small{font-size:8px}.fml-table-card th,.fml-table-card td{font-size:11px;padding:11px 7px}.fml-task-picker{flex-direction:column;align-items:stretch;gap:12px;margin-bottom:20px}.fml-task-picker label{font-size:10px}.fml-task-picker .fml-btn{width:100%}.fml-challenge-card{padding:24px 21px}.fml-challenge-card>h3,.fml-solve-card>h3{font-size:29px}.fml-prompt{font-size:12px}.fml-choices{display:block;margin-top:20px}.fml-choice{font-size:11px;padding:14px 13px;margin-bottom:10px}.fml-task-actions{flex-direction:column;align-items:stretch;gap:12px}.fml-task-actions>.fml-btn{width:100%}.fml-btn{font-size:11px!important;min-height:46px}.fml-feedback{padding:19px 17px}.fml-feedback>span{font-size:11px}.fml-feedback>p{font-size:10px}.fml-mission{padding:23px 21px;border-radius:13px;gap:15px}.fml-mission h3{font-size:27px}.fml-mission p{font-size:11px}.fml-mission ul{display:block;padding-top:9px}.fml-mission li{font-size:10px;margin:9px 0}.fml-small{font-size:9px}.fml-solve-card{padding:25px 21px}.fml-solve-equation{font-size:29px;padding:18px 13px}.fml-solve-fields{grid-template-columns:1fr;gap:18px}.fml-solve-field{font-size:11px}.fml-solve-field input{min-height:49px;font-size:18px}.fml-answer-caption{font-size:9px}.fml-solve-aside{grid-template-columns:1fr}.fml-solve-guide{padding:25px 23px}.fml-solve-guide li{font-size:11px}.fml-solve-guide>p{font-size:10px}.fml-solve-graph{padding:12px 18px}.fml-result-score{font-size:26px;line-height:1.3}.fml-field-results>div{padding:15px 13px;gap:8px}.fml-field-results b{font-size:10px}.fml-field-results span{font-size:8px}.fml-field-results small{font-size:9px}.fml-field-results p{font-size:10px}.fml-steps ol{font-size:10px}.fml-footer{display:grid;gap:8px;padding-top:18px;margin-top:28px;font-size:8px}.fml-dialog{padding:25px 21px}.fml-dialog h2{font-size:29px}.fml-dialog p{font-size:11px}.fml-dialog>div{display:grid}.fml-dialog .fml-btn{width:100%}}
@media(prefers-reduced-motion:reduce){.fml-app *{animation:none!important;transition:none!important;scroll-behavior:auto!important}}