@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.absolute{position:absolute}.static{position:static}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.block{display:block}.contents{display:contents}.grid{display:grid}.hidden{display:none}.table{display:table}.shrink{flex-shrink:1}.grow{flex-grow:1}.resize{resize:both}.rounded{border-radius:.25rem}.italic{font-style:italic}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.ring{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.invert{--tw-invert:invert(100%);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}}:root{--background:#f6f7f2;--foreground:#273025;--primary:#687e3e;--border:#e0e5d8;--muted:#70786a;--card:#fff;--accent:#eef3e4;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*{box-sizing:border-box}body{background:var(--background);color:var(--foreground);margin:0;font-family:Arial,Helvetica,sans-serif;font-size:16px}button,input,select{font:inherit}button{cursor:pointer}button,input,select{outline-offset:4px}button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid #779347}button{justify-content:center;align-items:center;gap:8px;display:inline-flex}button:disabled{opacity:.5;cursor:default}.topbar{border-bottom:1px solid var(--border);background:#fff;align-items:center;gap:24px;height:94px;padding:12px 42px;display:flex}.topbar img{object-fit:contain;width:100px;height:72px}.brand-divider{background:var(--border);width:1px;height:30px}.lab-name{letter-spacing:2px;font-size:13px;font-weight:700}.header-note{color:var(--muted);align-items:center;gap:9px;margin-left:auto;font-size:14px;display:flex}main{max-width:1700px;margin:auto;padding:34px 42px 32px}.heading{justify-content:space-between;align-items:center;display:flex}.eyebrow{letter-spacing:2.5px;color:#6b7f49;margin:0 0 10px;font-size:12px;font-weight:700}h1{letter-spacing:-1.7px;margin:0;font-family:Georgia,serif;font-size:42px;font-weight:400}h1 span{color:#83a34d}.heading p:not(.eyebrow){color:var(--muted);margin:11px 0 0;font-size:15px}.chapter{letter-spacing:1.5px;color:#818a78;font-size:12px}.mode-tabs{border-bottom:1px solid var(--border);gap:30px;margin:30px 0 25px;display:flex}.mode-tabs button{color:#727969;background:0 0;border:0;border-bottom:2px solid #0000;padding:0 1px 15px;font-size:15px}.mode-tabs button.active{color:#536b2e;border-color:#698740;font-weight:600}.workspace{grid-template-columns:280px minmax(0,1fr) minmax(0,1fr);gap:20px;display:grid}.panel{background:var(--card);border:1px solid var(--border);border-radius:13px;overflow:hidden}.settings{padding:20px}.panel-title{align-items:center;gap:9px;margin-bottom:22px;display:flex}.panel-title h2{margin:0;font-size:15px;font-weight:600}.step-label{color:#7d8e66;border:1px solid #dde5d1;border-radius:5px;padding:4px;font-size:12px}.badge{color:#687454;background:#f0f3eb;border:1px solid #e4e9dd;border-radius:5px;margin-left:auto;padding:4px 7px;font-size:12px}label{color:#56604c;margin-bottom:18px;font-size:14px;display:block}input,select{color:#283323;background:#fcfdf9;border:1px solid #dfe4d8;border-radius:7px;width:100%;min-width:0;margin-top:8px;padding:11px 12px;display:block}input{font-family:Georgia,serif;font-size:18px}.bounds{grid-template-columns:1fr 1fr;gap:12px;display:grid}.primary{color:#fff;background:#708746;border:0;border-radius:7px;width:100%;padding:13px;font-size:14px;font-weight:600}.view-panel{flex-direction:column;min-height:432px;display:flex}.view-panel>.panel-title{margin-bottom:0;padding:20px 20px 0}.plot{flex:1;width:100%;min-height:0}.view-foot{color:var(--muted);text-align:center;border-top:1px solid #e9ede2;margin:0;padding:15px 20px;font-size:12px}.initial-solid{color:#789343;background:#f9fbf4;flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex}.initial-solid p{font-size:14px}.initial-solid strong{font-family:Georgia,serif;font-size:22px;font-weight:400}@media (max-width:1100px){.workspace{grid-template-columns:240px minmax(0,1fr)}.workspace>.view-panel:last-child{grid-column:2}.settings{grid-row:span 2}.header-note{display:none}}@media (max-width:700px){.topbar{height:80px;padding:10px 20px}.topbar img{height:60px}main{padding:25px 16px}h1{font-size:34px}.chapter{display:none}.workspace{grid-template-columns:1fr}.workspace>.view-panel:last-child{grid-column:auto}.settings{grid-row:auto}.mode-tabs{gap:18px}.mode-tabs button{font-size:14px}.lab-name{font-size:11px}}.logo-link{display:flex}.help-button{border:1px solid var(--border);color:#5b6550;background:#fff;border-radius:7px;margin-left:4px;padding:9px 12px;font-size:13px}.preset-label{border:1px solid var(--border);color:#75835e;background:#fff;border-radius:8px;align-items:center;gap:9px;margin:0;padding:0 14px;display:flex}.preset-label select{color:#4e5c40;background:0 0;border:0;width:178px;margin:0;padding:11px 0;font-size:14px}.mode-bar{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:20px;margin:28px 0 24px;display:flex}.mode-tabs{border:0;margin:0}.compare-button{color:#6b775b;background:0 0;border:0;margin-bottom:14px;font-size:13px}.workspace{grid-template-columns:276px minmax(0,1fr);align-items:start}.views-area{min-width:0}.views-grid{grid-template-columns:1fr 1fr;gap:18px;display:grid}.view-panel{height:420px;min-height:420px}.solid-panel{background:#f7faf1}.muted{color:#8a9580;margin-left:auto}.settings .panel-title{margin-bottom:22px}.settings label{margin-bottom:16px;font-size:13px;font-weight:500}.function-label{float:right;color:#8c9680;font-family:Georgia,serif;font-style:italic}.function-input{position:relative}.function-input input{padding-left:31px;font-size:18px}.function-dot{background:#7a9650;border-radius:50%;width:6px;height:6px;position:absolute;top:20px;left:13px}.function-dot.tan{background:#b39a72}small{color:#939b8a;margin-top:7px;font-size:12px;font-weight:400;line-height:1.4;display:block}.bounds label{font-size:12px}.bounds i{float:right;font-family:Georgia,serif}.bounds input{padding:9px 12px}.control-divider{border-top:1px solid #edf0e7;margin:2px 0 19px}.segmented{background:#f6f8f1;border:1px solid #e4e8dd;border-radius:7px;padding:3px;display:flex}.segmented button{color:#7b846e;background:0 0;border:0;border-radius:5px;flex:1;padding:9px 6px;font-size:13px}.segmented button.selected{color:#4d6530;background:#fff;font-weight:600;box-shadow:0 1px 4px #28381810}.axis-select{margin-top:-7px;margin-bottom:18px}.method-label select{padding:11px 9px;font-family:inherit;font-size:13px}.input-help{text-align:center;color:#8b947f;margin:13px 0 0;font-size:12px;line-height:1.7}.control-note{color:#838e76;margin:-8px 0 16px;font-size:12px}.primary{transition:background .15s}.primary:hover{background:#5c7436}.view-panel>.panel-title{padding:18px 18px 0}.panel-title h2{font-size:14px}.plot-wrap{flex-direction:column;flex:1;min-height:0;padding:2px 12px 0;display:flex}.plot{touch-action:none;flex:1;height:0;min-height:0;display:block}.plot text{font-family:Arial,sans-serif}.plot-legend{color:#7b846d;justify-content:center;gap:21px;padding:0 0 18px;font-size:12px;display:flex}.plot-legend span{align-items:center;gap:6px;display:flex}.plot-legend i{background:#708b49;border-radius:4px;width:14px;height:3px}.plot-legend i.lower{background:#b49663}.plot-legend .region-key i{background:#dae6c8;border-radius:2px;width:10px;height:10px}.view-foot{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;min-height:41px;padding:13px 8px;font-size:11px;display:flex}.view-foot>span{background:#a8b29b;border-radius:50%;width:2px;height:2px}.solid-wrap{flex:1;min-height:0;position:relative}.three-host{touch-action:none;position:absolute;inset:0}.three-host canvas{outline:none;display:block}.view-tools{flex-direction:column;gap:6px;display:flex;position:absolute;top:14px;right:14px}.view-tools button{color:#6f7e5b;background:#ffffffd9;border:1px solid #e0e7d7;border-radius:5px;width:29px;height:29px}.axis-label{letter-spacing:1.5px;color:#8a9878;pointer-events:none;font-size:10px;position:absolute;bottom:14px;left:16px}.export-menu{font-size:12px;position:absolute;bottom:11px;right:14px}.export-menu summary{cursor:pointer;color:#718059;background:#ffffffb0;border-radius:4px;align-items:center;gap:6px;padding:6px;display:flex}.export-menu>div{border:1px solid var(--border);z-index:3;background:#fff;border-radius:7px;width:145px;padding:4px;position:absolute;bottom:34px;right:0;box-shadow:0 5px 20px #253a1520}.export-menu button{background:0 0;border:0;width:100%;padding:10px;font-size:12px}.export-menu button:hover{background:var(--accent)}.canvas-loading{color:#82916a;flex:1;place-items:center;font-size:14px;display:grid}.webgl-error{color:#6c765e;z-index:3;background:#fff;border-radius:8px;padding:15px;font-size:14px;position:absolute;inset:60px 25px auto}.animation-bar{border:1px solid var(--border);background:#fff;border-radius:10px;align-items:center;gap:13px;margin-top:15px;padding:17px 18px;display:flex}.play-button{color:#fff;background:#7c944e;border:0;border-radius:50%;flex-shrink:0;width:34px;height:34px}.sweep-control{flex:1;min-width:110px}.sweep-control label{color:#717b64;justify-content:space-between;margin:0 0 5px;font-size:12px;display:flex}.sweep-control strong{color:#768b54;font-size:12px;font-weight:500}.sweep-control input,.slice-bar input{accent-color:#809b52;cursor:pointer;min-width:40px;height:4px;margin:0;padding:0}input[type=range]{border:0}.icon-button{color:#8b977c;background:0 0;border:0;padding:4px}.animation-divider{background:#e5e9df;width:1px;height:26px;margin:0 3px}.check{white-space:nowrap;color:#737c65;align-items:center;gap:6px;margin:0;font-size:12px;display:flex}.check input{accent-color:#78934c;width:13px;height:13px;margin:0;padding:0;display:inline}.slice-bar{align-items:center;gap:16px;padding:17px 3px 0;display:flex}.slice-bar label{white-space:nowrap;color:#76816a;margin:0;font-size:12px}.slice-bar label span{color:#506439;margin-left:12px;font-family:Georgia,serif}.slice-bar input{flex:1}.slice-area{color:#8a957d;text-align:right;min-width:100px;font-size:12px}.solution{margin-top:29px}.solution-heading{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.solution-heading>div{align-items:center;gap:10px;display:flex}.solution-heading h2{letter-spacing:-.3px;margin:0;font-size:18px;font-weight:500}.small-icon{color:#7e915e;font-family:Georgia,serif;font-size:23px}.method-badge{color:#718455;background:#edf3e2;border:1px solid #dce5cd;border-radius:20px;padding:6px 10px;font-size:12px}.solution-grid{grid-template-columns:1fr 276px;gap:20px;display:grid}.steps{border:1px solid var(--border);background:#fff;border-radius:12px;grid-template-columns:.9fr 1.1fr 1fr;padding:25px 0;display:grid}.math-step{gap:12px;min-width:0;padding:0 22px;display:flex}.math-step+.math-step{border-left:1px solid #e9ede3}.step-number{color:#8a9b70;background:#f2f5ec;border:1px solid #e6ecdc;border-radius:50%;justify-content:center;align-items:center;min-width:22px;height:22px;font-size:11px;display:flex}.math-step>div{flex:1;min-width:0}.math-step h3{color:#5f6b52;margin:2px 0 19px;font-size:13px;font-weight:500}.math-step p{color:#8b937f;margin:15px 0 0;font-size:12px;line-height:1.8}.math-inline,.math-block{color:#4b593d;max-width:100%;padding:3px 1px;overflow:auto hidden}.katex{font-size:1.04em!important}.math-block .katex-display{text-align:left;margin:4px 0 10px}.math-block .katex-display>.katex{text-align:left}.volume-card{background:#eaf1dc;border:1px solid #d8e2c5;border-radius:12px;flex-direction:column;align-items:center;padding:20px 23px;display:flex}.volume-top{color:#6f8055;letter-spacing:1.7px;justify-content:space-between;align-items:center;width:100%;font-size:11px;display:flex}.result-toggle{background:#e3eccf;border-color:#dce5cb;width:100%;margin-top:16px}.result-toggle button{padding:6px;font-size:11px}.volume-value{color:#435a2e;overflow-wrap:anywhere;max-width:100%;margin:17px 0 0;font-family:Georgia,serif;font-size:37px;line-height:1.4}.volume-value .katex{font-size:1.1em!important}.units{color:#80916a;font-size:12px}.volume-rule{background:#d7e2c3;width:100%;height:1px;margin-top:16px}.volume-card>p{color:#74865a;text-align:center;margin:12px 0;font-size:12px}.volume-context{text-align:center;color:#8a9876;flex-direction:column;gap:5px;font-size:11px;display:flex}.error-banner{color:#835537;background:#fff4eb;border:1px solid #ead2ba;border-radius:8px;gap:12px;margin-bottom:15px;padding:14px;font-size:14px;display:flex}.error-banner svg{flex-shrink:0}.error-banner strong{font-size:14px}.error-banner p{margin:5px 0;font-size:13px;line-height:1.6}.error-banner small{color:#9b7658}footer{border-top:1px solid var(--border);color:#89927f;justify-content:space-between;align-items:center;margin-top:28px;padding-top:18px;font-size:11px;display:flex}footer i{color:#b0b9a5;margin:0 13px;font-style:normal}footer button{color:#798868;background:0 0;border:0;font-size:11px}.green{color:#7da552}.modal{color:#4b5840;background:#fcfdf9;border:1px solid #dce4d0;border-radius:16px;max-width:min(630px,100vw - 30px);max-height:85vh;padding:28px;overflow:auto;box-shadow:0 25px 90px #253a1533}.modal::backdrop{-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#25332155}.modal-heading{justify-content:space-between;align-items:center;gap:20px;display:flex}.modal h2{margin:0;font-family:Georgia,serif;font-size:27px;font-weight:400}.modal-heading button{color:#6b7d53;background:0 0;border:0;padding:4px}.modal h3{margin:18px 0 8px;font-size:15px;font-weight:600}.modal p{color:#7c8770;font-size:14px;line-height:1.8}.guide-row{gap:16px;margin-top:18px;display:flex}.guide-row>svg{color:#8ea46c;flex-shrink:0;margin-top:17px}.guide-row p{margin:0}.guide-note{background:#eff3e7;border-radius:8px;padding:14px}.compare-card{background:#fff;border:1px solid #e0e7d7;border-radius:9px;margin:15px 0;padding:4px 18px 15px}.text-button{color:#6a863f;background:0 0;border:0;padding:5px 0;font-size:13px}.compare-answer{text-align:center;font-weight:600;color:#637e40!important}@media (min-width:1600px){.view-panel{height:460px}.topbar{padding-left:max(42px,50vw - 808px);padding-right:max(42px,50vw - 808px)}}@media (max-width:1250px){main{padding:28px}.topbar{padding-left:28px;padding-right:28px}.workspace{grid-template-columns:250px minmax(0,1fr);gap:16px}.views-grid{gap:14px}.settings{padding:17px}.view-panel{height:420px;min-height:420px}.view-panel>.panel-title{gap:7px;padding:16px 12px 0}.view-panel .panel-title h2{font-size:13px}.panel-title .badge{font-size:10px}.solution-grid{grid-template-columns:1fr 250px;gap:16px}.steps{grid-template-columns:1fr 1.15fr}.math-step{padding:0 17px}.math-step:last-child{border-top:1px solid #e9ede3;border-left:0;grid-column:span 2;margin-top:20px;padding-top:20px}.math-step h3{margin-bottom:12px}.math-step:last-child>div{grid-template-columns:1fr 1fr;align-items:center;gap:8px;display:grid}.math-step:last-child h3{grid-column:span 2;margin:0}.animation-bar{gap:9px;padding:17px 13px}.check{font-size:11px}.view-foot{font-size:10px}.axis-label{font-size:9px}}@media (max-width:1050px){.header-note{display:none}.help-button{margin-left:auto}.workspace{grid-template-columns:230px minmax(0,1fr)}.views-grid{grid-template-columns:1fr}.view-panel{height:390px;min-height:390px}.settings{grid-row:auto;position:sticky;top:18px}.workspace>.view-panel:last-child{grid-column:auto}.plot-wrap{padding-left:25px;padding-right:25px}.animation-bar{flex-wrap:wrap}.sweep-control{min-width:130px}.animation-divider{display:none}.slice-bar{flex-wrap:wrap}.slice-bar input{min-width:100px}.slice-area{display:none}.solution-grid{grid-template-columns:1fr 230px}.steps{grid-template-columns:1fr}.math-step+.math-step{border-top:1px solid #e9ede3;border-left:0;margin-top:18px;padding-top:18px}.math-step:last-child{grid-column:auto}.math-step:last-child>div{display:block}.compare-button{gap:0;font-size:0}.compare-button svg{width:20px;height:20px}.preset-label select{width:145px}.heading h1{font-size:37px}.view-foot{font-size:12px}.axis-label{font-size:10px}}@media (max-width:700px){.topbar{gap:13px;height:78px;padding:8px 17px}.topbar img{width:82px;height:61px}.lab-name{letter-spacing:1.5px;font-size:10px}.brand-divider{height:25px}.help-button{gap:0;padding:8px;font-size:0}main{padding:25px 16px}.heading{flex-direction:column;align-items:flex-start;gap:20px}.heading h1{font-size:35px}.eyebrow{letter-spacing:2px;font-size:10px}.heading p:not(.eyebrow){font-size:13px;line-height:1.5}.preset-label{width:100%;padding-left:12px}.preset-label select{width:100%;font-size:13px}.mode-bar{gap:8px;margin-top:24px}.mode-tabs{gap:18px}.mode-tabs button{white-space:nowrap;gap:7px;font-size:12px}.mode-tabs button svg{width:16px}.compare-button{display:none}.workspace{grid-template-columns:1fr;gap:16px}.settings{padding:20px;position:static}.settings form{grid-template-columns:1fr 1fr;gap:0 15px;display:grid}.settings form>.bounds,.settings form>.control-divider,.settings form>.primary,.settings form>.input-help,.settings form>.control-note{grid-column:span 2}.settings form>.control-divider{margin-bottom:17px}.settings form>.axis-select{margin:0 0 17px}.settings form>.method-label{grid-column:span 2}.settings label{margin-bottom:17px}.settings label small{font-size:10px}.function-label{float:none;margin-left:4px}.function-input input{font-size:17px}.view-panel{height:380px;min-height:380px}.view-panel>.panel-title{padding:17px 18px 0}.view-panel .panel-title h2{font-size:14px}.plot-legend{font-size:12px}.view-foot{font-size:10px}.animation-bar{gap:11px}.sweep-control{min-width:150px}.animation-bar .check{font-size:12px}.solution{margin-top:25px}.solution-heading h2{font-size:16px}.method-badge{font-size:10px}.solution-grid{grid-template-columns:1fr}.volume-card{grid-row:1;grid-template-columns:1fr 1fr;gap:5px 20px;padding:20px;display:grid}.volume-top{grid-column:span 2}.result-toggle{grid-area:2/2;margin:10px 0 0}.volume-value{grid-area:2/1/span 2;margin-top:5px}.units{grid-area:4/1}.volume-rule,.volume-context{display:none}.volume-card>p{text-align:left;grid-area:3/2/span 2;font-size:11px}.math-step{padding:0 20px}.steps{padding:20px 0}.math-step p{font-size:13px}.math-step h3{font-size:14px}footer{align-items:flex-start;gap:20px;font-size:10px;line-height:1.8}footer span{max-width:210px}footer button{white-space:nowrap;font-size:10px}.modal{padding:22px}.modal h2{font-size:24px}.compare-card .katex{font-size:.9em!important}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}@media (max-width:700px){.compare-button{padding:0;display:inline-flex}.mode-tabs{gap:12px}.mode-tabs button{font-size:11px}.mode-bar{gap:7px}}.app-nav{border-bottom:1px solid var(--border);background:#fff;gap:10px;padding:0 42px;display:flex}.app-nav button{color:#7c856f;background:0 0;border:0;border-bottom:3px solid #0000;gap:10px;padding:19px 22px;font-size:14px}.app-nav button.active{color:#526936;background:#f8faf3;border-color:#77944b}.worksheet-count{color:#657d40;background:#eaf0dd;border-radius:4px;padding:2px 5px;font-size:12px}.collection-count{letter-spacing:1.2px;color:#899579;align-items:center;gap:10px;font-size:11px;display:flex}.collection-count i{background:#9eaf8b;border-radius:50%;width:3px;height:3px}.secondary{color:#66794d;background:#fff;border:1px solid #dce4cf;border-radius:7px;padding:10px 13px;font-size:13px;line-height:1.4}.secondary:hover{background:#f2f6e9}.object-studio{grid-template-columns:1.1fr 1fr;margin:28px 0;scroll-margin-top:18px;display:grid}.object-preview{background:#f7faf1;flex-direction:column;min-width:0;min-height:420px;display:flex}.object-preview .solid-wrap{min-height:360px}.object-preview .plot-wrap{height:360px;min-height:360px}.preview-heading{justify-content:space-between;align-items:center;gap:10px;padding:18px 20px 0;display:flex}.preview-heading .badge{margin:0}.object-lesson{border-left:1px solid var(--border);min-width:0;padding:27px 29px}.lesson-title{color:#708649;justify-content:space-between;align-items:center;display:flex}.lesson-title h2{color:#35432a;margin:0;font-family:Georgia,serif;font-size:30px;font-weight:400}.lesson-title .eyebrow{letter-spacing:1.6px;margin-bottom:7px;font-size:10px}.object-lesson>p{color:#858e78;margin:12px 0 20px;font-size:14px;line-height:1.7}.parameters{grid-template-columns:1fr 1fr;gap:16px 24px;margin:20px 0;display:grid}.parameters label{margin:0;font-size:13px}.parameters label>span{justify-content:space-between;align-items:center;gap:10px;display:flex}.parameters strong{color:#5e7840;font-size:14px}.parameters input[type=range]{accent-color:#839c59;height:5px;margin:12px 0 0;padding:0}.parameters small{color:#9ca58f;margin-top:9px;font-size:10px}.object-answer{border-top:1px solid #e6ecde;border-bottom:1px solid #e6ecde;justify-content:space-between;align-items:center;gap:15px;padding:16px 0;display:flex}.object-answer>strong{color:#516b36;white-space:nowrap;font-family:Georgia,serif;font-size:26px;font-weight:400}.object-answer>strong>span{color:#90a075;font-family:Arial,sans-serif;font-size:12px}.object-answer .math-inline{font-size:17px}.verification{align-items:center;gap:6px;display:flex;color:#7e9162!important;margin:12px 0!important;font-size:11px!important}.lesson-actions{gap:10px;display:flex}.lesson-actions .primary{flex:1;width:auto}.lesson-actions .secondary{flex:1}.related{color:#9ba58c;flex-wrap:wrap;align-items:center;gap:8px;margin-top:20px;font-size:11px;display:flex}.related button{color:#7f8e68;background:#f5f8ef;border:0;border-radius:5px;padding:5px 8px;font-size:11px}.library-toolbar{align-items:center;gap:12px;margin:26px 0 18px;display:flex}.search-box{border:1px solid var(--border);color:#849571;background:#fff;border-radius:8px;flex:1;align-items:center;gap:10px;min-width:0;padding:0 13px;display:flex}.search-box input{background:0 0;border:0;margin:0;padding:13px 0;font-family:Arial,sans-serif;font-size:14px}.library-toolbar select{background:#fff;width:auto;max-width:210px;margin:0;padding:12px;font-size:13px}.category-tabs{flex-wrap:wrap;gap:8px;display:flex}.category-tabs button{color:#8b947e;background:0 0;border:1px solid #0000;border-radius:20px;padding:8px 12px;font-size:12px}.category-tabs button.selected{color:#627b3c;background:#e9f0da;border-color:#d6e1c4}.results-line{color:#939d85;justify-content:space-between;margin:24px 0 15px;font-size:12px;display:flex}.object-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;display:grid}.object-card{text-align:left;border:1px solid var(--border);color:var(--foreground);background:#fff;border-radius:12px;flex-direction:column;align-items:stretch;gap:0;padding:0;transition:border-color .15s,transform .15s;display:flex;overflow:hidden}.object-card:hover{border-color:#9db87a;transform:translateY(-2px)}.object-card.selected{border-color:#8ba764;box-shadow:0 0 0 1px #8ba764}.object-art{background:radial-gradient(#f1f6e7,#f8faf4);place-items:center;height:170px;display:grid;position:relative}.object-art img{object-fit:contain;width:160px;height:145px}.object-art>span{color:#96a183;background:#ffffffb8;border:1px solid #e2e9d8;border-radius:4px;padding:4px 6px;font-size:10px;position:absolute;top:12px;left:12px}.object-card>div:last-child{padding:17px 19px 18px}.object-card small{letter-spacing:.3px;color:#9aa38d;margin:0;font-size:10px}.object-card h3{justify-content:space-between;align-items:center;gap:10px;margin:8px 0 10px;font-size:16px;font-weight:500;display:flex}.object-card h3 svg{color:#9baf7e;flex-shrink:0}.object-card p{color:#8a947c;margin:0;font-size:12px;line-height:1.6}.empty-state{text-align:center;color:#8c9880;padding:35px;font-size:14px;line-height:1.8}.limit-lesson{color:#667d45;background:#f0f5e5;gap:18px;margin-bottom:24px;padding:25px;display:flex}.limit-lesson>svg{flex-shrink:0;margin-top:2px}.limit-lesson h3{margin:0;font-family:Georgia,serif;font-size:24px;font-weight:400}.limit-lesson p{color:#7b8d64;font-size:14px;line-height:1.8}.limit-lesson>div{min-width:0}.practice-layout{grid-template-columns:315px minmax(0,1fr);align-items:start;gap:22px;display:grid}.problem-list{max-height:900px;overflow:auto}.list-count{color:#96a187;margin:0;padding:19px 20px 12px;font-size:12px}.problem-list>button{text-align:left;color:#657454;background:0 0;border:0;border-left:3px solid #0000;flex-direction:column;align-items:flex-start;gap:7px;width:100%;padding:16px 18px;display:flex}.problem-list>button.selected{background:#f0f5e7;border-left-color:#809d50}.problem-list>button>span{font-size:14px;line-height:1.5}.problem-list small{margin:0;font-size:11px}.problem-detail{padding:30px}.problem-top{justify-content:space-between;align-items:center;gap:10px;display:flex}.problem-top .badge{margin:0}.problem-detail h2{color:#465839;margin:24px 0 12px;font-family:Georgia,serif;font-size:29px;font-weight:400;line-height:1.3}.problem-detail>p{color:#78886a;font-size:15px;line-height:1.8}.problem-setup{color:#6d7a5f;overflow-wrap:anywhere;background:#f7f9f1;border:1px solid #e8eddf;border-radius:8px;padding:17px 20px;font-size:14px;line-height:1.9}.problem-setup>span{color:#576c3f;font-size:13px;font-weight:600}.problem-setup p{margin:6px 0;font-family:ui-monospace,monospace;font-size:13px;line-height:1.9}.problem-detail blockquote,.worksheet-question blockquote{color:#89754b;background:#fbf5e9;border-left:3px solid #c5af7e;margin:20px 0;padding:16px 20px;font-size:14px;line-height:1.7}.answer-choices{border:0;margin:22px 0;padding:0}.answer-choices legend{color:#69804d;margin-bottom:10px;font-size:14px}.answer-choices label{background:#fcfdf9;border:1px solid #e5ebdb;border-radius:7px;align-items:flex-start;gap:10px;margin:9px 0;padding:12px;font-size:14px;line-height:1.6;display:flex}.answer-choices input{accent-color:#839b59;flex-shrink:0;width:15px;height:15px;margin-top:4px}.answer-choices p{color:#718b4a;font-size:13px}.answer-form{align-items:flex-end;gap:14px;margin:24px 0 15px;display:flex}.answer-form label{flex:1;margin:0;font-size:14px}.answer-form input{padding:12px;font-family:Arial,sans-serif;font-size:14px}.answer-form .primary{width:auto;padding:13px 20px}.answer-feedback{color:#718454;background:#eff4e6;border-radius:7px;padding:12px 15px;font-size:14px}.problem-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.hint{color:#768962;background:#f2f5eb;border-radius:7px;padding:12px 16px;line-height:1.8;font-size:14px!important}.worked-solution{background:#f7f9f2;border:1px solid #e4ead9;border-radius:9px;margin-top:22px;padding:22px;overflow:hidden}.worked-solution h4{color:#5d7146;margin:20px 0 10px;font-size:14px;font-weight:600}.worked-solution h4:first-child{margin-top:0}.worked-solution p{color:#82926f;font-size:14px;line-height:1.8}.worked-solution .answer-line{color:#5e793e;font-size:18px}.problem-related{border-top:1px solid var(--border);color:#97a08c;justify-content:space-between;align-items:center;gap:15px;margin-top:28px;padding-top:18px;font-size:12px;display:flex}.teacher-layout{grid-template-columns:285px minmax(0,1fr);align-items:start;gap:23px;margin-top:28px;display:grid}.teacher-sidebar{padding:20px}.teacher-sidebar h3{color:#657b4a;align-items:center;gap:8px;margin:0 0 15px;font-size:15px;font-weight:500;display:flex}.teacher-sidebar hr{border:0;border-top:1px solid var(--border);margin:22px 0}.saved-collection{text-align:left;background:#fafcf5;border:1px solid #e4ebd9;border-radius:7px;flex-direction:column;align-items:flex-start;gap:3px;width:100%;margin-top:10px;padding:12px;display:flex}.saved-collection.selected{background:#edf3e1;border-color:#adbf93}.saved-collection strong{color:#6a7e50;font-size:14px;font-weight:500}.saved-collection small{font-size:11px}.muted-copy{color:#96a088;font-size:13px;line-height:1.7}.teacher-sidebar>input{font-family:Arial,sans-serif;font-size:13px}.worksheet-picker{max-height:640px;margin-top:15px;overflow:auto}.worksheet-picker label{border-bottom:1px solid #f0f3e9;align-items:flex-start;gap:10px;margin:0;padding:10px 0;font-size:13px;line-height:1.5;display:flex}.worksheet-picker input{accent-color:#819d51;flex-shrink:0;width:14px;height:14px;margin:3px 0 0}.worksheet-picker small{margin-top:3px;font-size:10px}.worksheet-area{min-width:0}.worksheet-controls{margin-bottom:20px;padding:22px}.worksheet-controls>label:first-child{font-size:13px}.worksheet-controls input{font-family:Arial,sans-serif;font-size:16px}.worksheet-buttons{flex-wrap:wrap;gap:9px;margin:17px 0;display:flex}.worksheet-buttons .primary{width:auto}.worksheet-controls input[hidden]{display:none}.worksheet-controls .check input{width:14px;height:14px}.save-status{color:#73864e;background:#eef4e3;border-radius:6px;padding:12px;font-size:14px;line-height:1.6}.print-sheet{padding:32px 38px}.worksheet-brand{letter-spacing:1.7px;color:#829565;justify-content:space-between;align-items:center;font-size:11px;display:flex}.worksheet-brand img{object-fit:contain;width:74px;height:64px}.print-sheet>h2{color:#3e5130;margin:25px 0 20px;font-family:Georgia,serif;font-size:30px;font-weight:400}.print-sheet>p{color:#8d977e;font-size:13px;line-height:1.8}.worksheet-meta{border-top:1px solid #e6edda;border-bottom:1px solid #e6edda;padding:13px 0}.worksheet-models>h3{color:#6a7c51;font-size:16px;font-weight:500}.worksheet-model{border-bottom:1px solid #e9eee0;align-items:center;gap:20px;padding:20px 0;display:flex}.worksheet-model>img{width:120px;height:110px}.worksheet-model>div{flex:1;min-width:0}.worksheet-model h4{margin:0;font-size:16px;font-weight:500}.worksheet-model p{color:#8b967d;font-size:13px;line-height:1.7}.worksheet-question{break-inside:avoid;border-top:1px solid #e1e8d5;margin-top:25px;padding-top:25px}.worksheet-question-title{justify-content:space-between;align-items:center;display:flex}.worksheet-question h3{color:#5d7345;margin:0;font-size:17px;font-weight:500}.worksheet-question>p,.worksheet-question li{color:#788769;font-size:14px;line-height:1.8}.working-space{color:#a1ae90;border-bottom:1px dotted #dce4cd;height:170px;margin-top:20px;font-size:12px}.worksheet-footer{color:#a0ac90;text-align:center;border-top:1px solid #e0e7d5;margin-top:32px;padding-top:17px;font-size:10px}.toast{color:#fff;z-index:20;background:#465e2f;border-radius:9px;align-items:center;gap:25px;max-width:calc(100vw - 30px);padding:15px 20px;font-size:14px;display:flex;position:fixed;bottom:24px;left:50%;transform:translate(-50%);box-shadow:0 6px 30px #22361630}.toast button{color:#d9e8c1;white-space:nowrap;background:0 0;border:0;font-size:12px}.unit-picker{color:#859376;align-items:center;gap:8px;margin:0 0 12px;font-size:12px;display:flex}.unit-picker select{background:#fff;width:auto;margin:0;padding:7px;font-size:12px}.model-parameters{margin-top:24px;padding:17px 20px}.model-parameters summary{color:#73884d;cursor:pointer;font-size:14px}.model-parameters .parameters{grid-template-columns:repeat(4,1fr);margin-bottom:10px}.model-parameters small{font-size:11px}.find-intersections{margin:-3px 0 12px}.intersection-results{background:#f4f7ed;border-radius:7px;margin-bottom:15px;padding:10px}.intersection-results p,.intersection-results>span{color:#83916f;font-size:12px;line-height:1.7}.intersection-results button{width:100%;margin:5px 0;padding:7px;font-size:12px}.piece-actions{flex-direction:column;align-items:flex-start;gap:5px;margin:5px 0 15px;display:flex}.piece-actions button{font-size:12px}.piece-editor fieldset{border:1px solid #e2e9d5;border-radius:7px;margin-bottom:15px;padding:12px}.piece-editor legend{color:#859969;padding:0 5px;font-size:12px}.piece-editor input{padding:8px;font-family:Arial,sans-serif;font-size:13px}.piece-editor label{margin-bottom:11px!important;font-size:12px!important}.piece-editor .bounds{gap:7px}.piece-editor .text-button{font-size:11px}.calculator-page .settings{max-height:1000px;overflow:auto}.calculator-page .solution-grid{grid-template-columns:1fr 220px}.calculator-page .steps{grid-template-columns:1fr}.calculator-page .math-step+.math-step{border-top:1px solid #e9ede3;border-left:0;margin-top:20px;padding-top:20px}.calculator-page .math-step:last-child{grid-column:auto}.calculator-page .math-step:last-child>div{display:block}.calculator-page .math-step p{font-size:13px}.calculator-page .volume-card{align-self:start;position:sticky;top:20px}.view-note{color:#98a58a;margin:16px 0;font-size:11px;line-height:1.6}.analysis-tools{grid-template-columns:1fr 1fr;gap:20px;margin-top:26px;display:grid}.analysis-card{min-width:0;padding:24px}.analysis-title{color:#7f9856;align-items:center;gap:10px;display:flex}.analysis-title h3{color:#5e7444;margin:0;font-size:17px;font-weight:500}.analysis-card>p{color:#8a977a;font-size:14px;line-height:1.8}.analysis-card>small{color:#9aa889;margin-top:16px;font-size:11px;line-height:1.7}.finite-controls{align-items:center;gap:22px;margin:20px 0;display:flex}.finite-controls>label:first-child{flex:1;margin:0;font-size:13px}.finite-controls strong{float:right;color:#6d8947}.finite-controls input[type=range]{accent-color:#849d5a;height:4px;margin-top:14px;padding:0}.finite-controls .check{font-size:12px}.measure-row{color:#8e9e7a;border-top:1px solid #e8eedf;border-bottom:1px solid #e8eedf;gap:35px;margin-top:16px;padding:15px 0;font-size:12px;display:flex}.measure-row>span{flex-direction:column;flex:1;gap:7px;display:flex}.measure-row strong{color:#657f45;font-size:16px;font-weight:500}.analysis-card details{color:#7f9466;margin-top:16px;font-size:13px}.analysis-card summary{cursor:pointer}.analysis-card table{text-align:left;border-collapse:collapse;width:100%;margin-top:12px;font-size:12px}.analysis-card td,.analysis-card th{border-bottom:1px solid #e7eddd;padding:8px}.analysis-card th{color:#8c9d74;font-weight:500}.surface-total{color:#6b854a;margin-top:23px;font-family:Georgia,serif;font-size:37px}.surface-total>span{color:#9aaa85;font-family:Arial,sans-serif;font-size:14px}.comparison-card{grid-column:span 2}.comparison-results{grid-template-columns:1fr 1fr;gap:25px;margin-top:25px;display:grid}.comparison-results>div{background:#f5f8ed;border-radius:7px;min-width:0;padding:16px}.comparison-results strong{color:#6d874a;font-weight:500}.calculator-guide{margin-top:20px;padding:20px 24px;font-size:14px}.calculator-guide summary{color:#7c925d;cursor:pointer}.calculator-guide p{color:#8a9879;line-height:1.8}.calculator-page .animation-bar{flex-wrap:wrap}.calculator-page .sweep-control{min-width:160px}@media (min-width:1700px){.app-nav{padding-left:max(42px,50vw - 808px);padding-right:max(42px,50vw - 808px)}}@media (max-width:1200px){.app-nav{padding:0 28px}.app-nav button{padding:17px 16px}.object-studio{grid-template-columns:1fr 1fr}.object-lesson{padding:23px}.object-answer{flex-direction:column;align-items:flex-start;gap:8px}.object-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.collection-count{display:none}.library-toolbar{flex-wrap:wrap}.library-toolbar .search-box{min-width:250px}.practice-layout{grid-template-columns:270px minmax(0,1fr)}.teacher-layout{grid-template-columns:240px minmax(0,1fr)}.print-sheet{padding:25px}.teacher-sidebar{padding:16px}.worksheet-buttons .secondary{padding:9px;font-size:12px}.calculator-page .solution-grid{grid-template-columns:1fr 190px}.calculator-page .volume-value{font-size:28px}.calculator-page .volume-card{padding:17px}.lesson-actions{flex-direction:column}}@media (max-width:900px){.object-studio{grid-template-columns:1fr}.object-preview{min-height:330px}.object-preview .solid-wrap{min-height:310px}.object-lesson{border-left:0;border-top:1px solid var(--border)}.object-answer{flex-direction:row;align-items:center}.lesson-actions{flex-direction:row}.object-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.object-card>div:last-child{padding:13px}.object-card h3{font-size:14px}.object-card p{font-size:11px}.object-art{height:150px}.object-art img{width:140px;height:130px}.object-art>span{font-size:9px}.practice-layout{grid-template-columns:1fr}.problem-list{max-height:260px}.problem-detail{padding:24px}.teacher-layout{grid-template-columns:1fr}.teacher-sidebar .worksheet-picker{max-height:240px}.teacher-sidebar{grid-template-columns:1fr 1fr;gap:10px 20px;display:grid}.teacher-sidebar hr{display:none}.teacher-sidebar>h3,.teacher-sidebar>.text-button,.teacher-sidebar>input,.teacher-sidebar>.worksheet-picker,.teacher-sidebar .muted-copy{grid-column:span 2}.analysis-tools{grid-template-columns:1fr}.comparison-card{grid-column:auto}.calculator-page .solution-grid{grid-template-columns:1fr}.calculator-page .volume-card{grid-row:1;position:static}.model-parameters .parameters{grid-template-columns:1fr 1fr}.calculator-page .settings{max-height:none}.app-nav{justify-content:space-between;gap:0;padding:0 18px}.app-nav button{gap:7px;padding:15px 12px;font-size:12px}}@media (max-width:600px){.app-nav{gap:2px;padding:0 8px}.app-nav button{flex-direction:column;flex:1;gap:6px;padding:12px 8px;font-size:10px}.app-nav button svg{width:17px;height:17px}.topbar .lab-name{letter-spacing:1px;font-size:9px}.topbar .help-button{gap:5px;padding:7px;font-size:0}.worksheet-count{font-size:10px}.object-studio{margin:24px 0}.object-lesson{padding:20px}.object-lesson>p{font-size:13px}.lesson-title h2{font-size:27px}.parameters{gap:17px}.parameters label{font-size:12px}.parameters label>span{gap:7px;line-height:1.5}.parameters strong{font-size:13px}.object-answer{flex-direction:column;gap:10px}.object-answer .math-inline{font-size:16px}.lesson-actions .primary,.lesson-actions .secondary{font-size:12px}.related{line-height:1.6}.library-toolbar{gap:9px}.library-toolbar .search-box{flex-basis:100%;min-width:0}.library-toolbar select{flex:1;min-width:0;max-width:none;padding:10px 7px;font-size:11px}.category-tabs{gap:4px}.category-tabs button{padding:7px 9px;font-size:10px}.results-line{font-size:10px}.object-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.object-art{height:140px}.object-art img{width:125px;height:118px}.object-card h3{align-items:flex-start;font-size:13px;line-height:1.4}.object-card h3 svg{width:13px;height:13px;margin-top:2px}.object-card small{font-size:9px}.object-card p{font-size:10px}.object-card>div:last-child{padding:12px}.preview-heading{padding:15px 15px 0}.preview-heading .text-button{font-size:11px}.preview-heading .badge,.object-preview .view-foot{font-size:10px}.limit-lesson{gap:10px;padding:18px}.limit-lesson h3{font-size:22px}.limit-lesson p{font-size:13px}.problem-detail{padding:20px}.problem-top{flex-direction:column;align-items:flex-start;gap:12px}.problem-detail h2{font-size:25px}.problem-detail>p{font-size:14px}.problem-setup{padding:13px}.problem-setup p{font-size:11px}.answer-form{flex-direction:column;align-items:stretch}.answer-form .primary{width:100%}.problem-actions{gap:8px}.problem-actions .secondary{padding:9px;font-size:12px}.worked-solution{padding:16px}.problem-related{flex-direction:column;align-items:flex-start;font-size:11px}.worksheet-controls{padding:17px}.worksheet-controls .check{white-space:normal;align-items:flex-start;line-height:1.6}.worksheet-controls .check input{flex-shrink:0;margin-top:3px}.worksheet-buttons{gap:7px}.worksheet-buttons .primary{padding:10px;font-size:12px}.print-sheet{padding:20px}.print-sheet>h2{font-size:26px}.worksheet-brand>span{letter-spacing:1px;font-size:9px}.worksheet-model{align-items:flex-start;gap:10px}.worksheet-model>img{width:72px;height:80px}.worksheet-model p{font-size:11px}.worksheet-model h4{font-size:14px}.worksheet-models>h3{font-size:15px}.worksheet-question h3{font-size:15px;line-height:1.6}.worksheet-question>p,.worksheet-question li{font-size:13px}.toast{gap:15px;min-width:calc(100vw - 32px);padding:13px 16px;font-size:12px}.toast button{white-space:normal;font-size:11px}.calculator-page .mode-bar{flex-wrap:wrap;align-items:center}.unit-picker{margin-bottom:12px;font-size:11px}.model-parameters{padding:15px}.model-parameters .parameters{gap:20px 15px}.calculator-page .settings form{display:block}.calculator-page .settings .bounds{display:grid}.calculator-page .axis-select{margin-bottom:18px}.calculator-page .volume-value{font-size:32px}.analysis-card{padding:20px}.finite-controls{flex-direction:column;align-items:flex-start;gap:15px}.finite-controls>label:first-child{width:100%}.comparison-results{grid-template-columns:1fr;gap:12px}.analysis-title h3{font-size:16px}.analysis-card>p{font-size:13px}.measure-row strong{font-size:14px}.calculator-page .view-note{font-size:10px}.calculator-guide{padding:18px;font-size:13px}.piece-editor .bounds input{font-size:14px}.piece-actions{align-items:flex-start}.model-parameters summary{font-size:13px}}@media print{@page{size:A4;margin:16mm}body{background:#fff!important}body *{visibility:hidden}nav,.topbar,.teacher-sidebar,.worksheet-controls,footer,.toast,.no-print{display:none!important}.print-sheet,.print-sheet *{visibility:visible}.print-sheet{width:100%;position:absolute;top:0;left:0;color:#222!important;background:#fff!important;border:0!important;padding:0!important;overflow:visible!important}.print-sheet .problem-setup,.print-sheet .worked-solution{break-inside:avoid;background:#fff!important}.print-sheet .math-inline,.print-sheet .math-block{overflow:visible}.print-sheet .worksheet-question,.print-sheet .worksheet-model{break-inside:avoid}.print-sheet p,.print-sheet li{color:#333!important}.print-sheet .working-space{height:38mm}.print-sheet .worksheet-footer{font-size:9px}main{padding:0}.teacher-layout{display:block}.teacher-page>.heading{display:none}}.saved-collection-row{grid-template-columns:minmax(0,1fr) 32px;align-items:stretch;gap:6px;margin-top:10px;display:grid}.saved-collection-row .saved-collection{margin-top:0}.saved-delete{color:#95a286;background:#fff;border:1px solid #e4ebd9;border-radius:7px;place-items:center;display:grid}.saved-delete:hover{color:#8f5148;background:#fff8f6;border-color:#d8b6b0}.local-storage-note{color:#8d997e;margin:8px 0 0;font-size:11px;line-height:1.6}button.logo-link{cursor:pointer;background:0 0;border:0;padding:0}.math-inline{display:inline-block}.math-block{display:block}.math-entry{margin-bottom:15px;display:block}.math-entry-label{color:#647056;align-items:center;gap:5px;margin-bottom:8px;font-size:13px;display:flex}.math-entry-label .math-inline{color:#40512f;font-size:14px}.math-entry input{margin:0}.math-source-input{display:block}.math-entry-preview{color:#536a39;background:#fafcf7;border:1px solid #e5eadc;border-radius:6px;align-items:center;gap:9px;min-height:33px;margin-top:6px;padding:6px 9px;display:flex;overflow-x:auto}.math-entry-preview .preview-label{letter-spacing:1.15px;text-transform:uppercase;color:#9aa58d;flex:none;font:700 8px/1 Arial,sans-serif}.math-entry-preview .math-inline{white-space:nowrap;flex-shrink:0;min-width:0;max-width:none;font-size:15px;overflow:visible}.math-entry-preview.unavailable{color:#a28f73;background:#fcfbf8;border-color:#eee8dc}.preview-message{font-size:11px;line-height:1.4}.math-entry.compact{margin-bottom:12px}.math-entry.compact .math-entry-preview{min-height:29px;padding:4px 7px}.math-entry.compact .math-entry-preview .math-inline{font-size:13px}.math-entry.compact .preview-label{display:none}.math-source-fallback,.math-render-error{color:#8c664e;font-family:Georgia,serif}.piece-editor .math-entry{margin-bottom:11px}.piece-editor .math-entry-label{margin-bottom:6px;font-size:12px}.piece-editor .math-entry-preview{min-height:28px}.problem-formulas{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 15px;margin-top:9px;display:grid}.problem-formulas .math-block{text-align:left;margin:0}.problem-setup>span>.math-inline{margin-left:3px;display:inline-block}@media (max-width:600px){.problem-formulas{grid-template-columns:1fr}.math-entry-preview{flex-direction:column;align-items:flex-start;gap:4px}.math-entry.compact .math-entry-preview{display:block}.math-entry-preview .math-inline{font-size:14px}}.site-footer{border-top:1px solid var(--border);color:#78846c;grid-template-columns:1.1fr 1fr 1fr;align-items:start;gap:34px;margin-top:54px;padding:32px 0 5px;font-size:14px;display:grid}.footer-brand>span{letter-spacing:1.7px;text-transform:uppercase;color:#9aa58f;margin-bottom:8px;font-size:11px;display:block}.powered-link{color:#2d3829;letter-spacing:.5px;align-items:center;gap:4px;font-size:18px;font-weight:700;text-decoration:none;display:inline-flex}.powered-link span{color:#7ba448}.powered-link:hover{color:#637e3f}.footer-brand p{color:#8a9580;margin:10px 0 0;font-size:13px;line-height:1.6}.footer-links{grid-template-columns:1fr 1fr;gap:12px 22px;display:grid}.footer-links a,.footer-contact a{color:#687a54;text-decoration:none}.footer-links a:hover,.footer-contact a:hover{text-underline-offset:3px;text-decoration:underline}.footer-contact{text-align:right;flex-direction:column;align-items:flex-end;gap:13px;display:flex}.footer-contact a{align-items:center;gap:7px;display:flex}.footer-contact span{color:#9aa38f;font-size:12px}.info-topbar{border-bottom:1px solid var(--border);background:#fff;justify-content:space-between;align-items:center;gap:25px;height:94px;padding:12px max(42px,50vw - 600px);display:flex}.info-logo{color:#303a2b;letter-spacing:2px;align-items:center;gap:25px;font-size:13px;font-weight:700;text-decoration:none;display:flex}.info-logo img{object-fit:contain;width:100px;height:72px}.info-logo span{border-left:1px solid var(--border);padding-left:25px}.info-topbar>a:last-child{color:#64794a;border:1px solid var(--border);border-radius:7px;padding:10px 14px;font-size:13px;text-decoration:none}.info-main{max-width:1120px;padding:34px 42px 42px}.back-link{color:#71845a;align-items:center;gap:7px;margin-bottom:34px;font-size:13px;text-decoration:none;display:inline-flex}.back-link:hover{text-underline-offset:3px;text-decoration:underline}.info-hero{max-width:820px;padding:50px 0 46px}.info-hero h1{font-size:52px}.info-hero>p:last-child{color:#76806e;max-width:760px;margin:18px 0 0;font-size:18px;line-height:1.75}.info-document{border:1px solid var(--border);background:#fff;border-radius:14px;padding:48px 56px;box-shadow:0 12px 50px #31421c08}.info-document section{border-top:1px solid #e8ecdf;max-width:820px;padding:26px 0}.info-document section:first-of-type{border-top:0;padding-top:0}.info-document h2{color:#4d613a;margin:0 0 13px;font-family:Georgia,serif;font-size:25px;font-weight:400}.info-document p,.info-document li{color:#68735f;font-size:16px;line-height:1.85}.info-document p{margin:0 0 14px}.info-document ul{margin:10px 0 3px;padding-left:22px}.info-document li{margin-bottom:9px;padding-left:5px}.info-document a{color:#628238;text-underline-offset:3px}.effective-date{background:#eef3e5;border:1px solid #dfe8d1;border-radius:20px;color:#768963!important;margin:0 0 28px!important;padding:7px 12px!important;font-size:13px!important;display:inline-block!important}.info-callout{background:#edf3e2;border:1px solid #dce7cb;border-radius:10px;max-width:820px;margin:14px 0 26px;padding:25px 28px}.info-callout p{color:#60724c;margin-bottom:18px}.info-callout>a{color:#fff;background:#6f8846;border-radius:7px;padding:11px 15px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.contact-grid{grid-template-columns:1fr 1fr;gap:15px;margin-bottom:34px;display:grid}.contact-card{background:#fbfcf8;border:1px solid #e2e8d8;border-radius:10px;align-items:flex-start;gap:17px;padding:21px;text-decoration:none;transition:border-color .15s,transform .15s;display:flex}.contact-card:hover{border-color:#9eb77a;transform:translateY(-2px)}.contact-card>svg{color:#77944c;flex-shrink:0;margin-top:3px}.contact-card>span{flex-direction:column;gap:6px;display:flex}.contact-card strong{color:#536442;font-size:16px}.contact-card small{color:#8b9680;margin:0;font-size:13px;line-height:1.5}.contact-card b{color:#6a873f;font-size:14px;font-weight:500}@media (max-width:800px){.site-footer{grid-template-columns:1fr 1fr}.footer-contact{text-align:left;grid-column:span 2;align-items:flex-start}.info-topbar{height:80px;padding:10px 20px}.info-logo{gap:14px}.info-logo img{width:84px;height:60px}.info-logo span{padding-left:14px;font-size:11px}.info-main{padding:25px 20px 35px}.info-hero{padding:35px 0}.info-hero h1{font-size:42px}.info-document{padding:35px}.contact-grid{grid-template-columns:1fr}}@media (max-width:520px){.site-footer{grid-template-columns:1fr;gap:28px}.footer-contact{grid-column:auto}.footer-links{gap:12px}.info-logo span{display:none}.info-topbar>a:last-child{padding:8px 10px;font-size:12px}.info-main{padding:22px 16px 30px}.back-link{margin-bottom:22px}.info-hero{padding:28px 0 32px}.info-hero h1{font-size:36px}.info-hero>p:last-child{font-size:16px}.info-document{padding:25px 20px}.info-document h2{font-size:22px}.info-document p,.info-document li{font-size:15px}.contact-card{padding:17px}.footer-links{grid-template-columns:1fr 1fr;font-size:13px}}.model-viewer-open{overflow:hidden}.solid-wrap.is-fullscreen{z-index:1000;background:#f7faf1;border:1px solid #d7e2ca;border-radius:14px;min-height:0;position:fixed;inset:14px;box-shadow:0 24px 90px #263b1e55}.solid-wrap.is-fullscreen .three-host{border-radius:inherit;overflow:hidden}.fullscreen-view-title{z-index:2;color:#61734b;pointer-events:none;background:#ffffffe8;border:1px solid #e0e7d7;border-radius:7px;flex-direction:column;gap:4px;padding:9px 12px;display:flex;position:absolute;top:16px;left:18px}.fullscreen-view-title strong{font-size:13px}.fullscreen-view-title span{color:#87947a;font-size:10px}.solid-wrap .view-tools{z-index:3}.solid-wrap .view-tools button{cursor:pointer;background:#ffffffea;border-color:#dbe4d1;border-radius:6px;place-items:center;width:31px;height:31px;padding:0;display:grid;box-shadow:0 2px 8px #35452310}.solid-wrap .view-tools button:hover{color:#40572c;background:#f2f6ea}.solid-wrap .view-tools button:focus-visible{outline-offset:2px;outline:2px solid #78934c}.solid-wrap .axis-label,.solid-wrap .export-menu{z-index:3}@media (max-width:700px){.solid-wrap.is-fullscreen{border:0;border-radius:0;inset:0}.fullscreen-view-title{top:12px;left:12px;right:56px}.fullscreen-view-title span{display:none}.solid-wrap .view-tools{top:12px;right:12px}}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}
@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(../media/KaTeX_AMS-Regular.25ieegmnh38ts.woff2)format("woff2"),url(../media/KaTeX_AMS-Regular.10y3kupq4t663.woff)format("woff"),url(../media/KaTeX_AMS-Regular.418dr7cz3fo2x.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(../media/KaTeX_Caligraphic-Bold.06b-ya9t43ioz.woff2)format("woff2"),url(../media/KaTeX_Caligraphic-Bold.2vmk2hva4ctha.woff)format("woff"),url(../media/KaTeX_Caligraphic-Bold.40ltxhe834pns.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(../media/KaTeX_Caligraphic-Regular.2eph4dlhid_m9.woff2)format("woff2"),url(../media/KaTeX_Caligraphic-Regular.3gxeetazf831f.woff)format("woff"),url(../media/KaTeX_Caligraphic-Regular.07-7u27-nhn_r.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(../media/KaTeX_Fraktur-Bold.2sasz-d-jtw8y.woff2)format("woff2"),url(../media/KaTeX_Fraktur-Bold.1alcy76__wdj2.woff)format("woff"),url(../media/KaTeX_Fraktur-Bold.19yqa_tc9d_gx.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(../media/KaTeX_Fraktur-Regular.2d10y4xmjvzlf.woff2)format("woff2"),url(../media/KaTeX_Fraktur-Regular.110oo81prr9n5.woff)format("woff"),url(../media/KaTeX_Fraktur-Regular.2qhy34r6a05dn.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(../media/KaTeX_Main-Bold.3-rowy8o6_4ky.woff2)format("woff2"),url(../media/KaTeX_Main-Bold.0v1esh257kqpe.woff)format("woff"),url(../media/KaTeX_Main-Bold.0us_n0tnxlxu7.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(../media/KaTeX_Main-BoldItalic.14r2naom8mrec.woff2)format("woff2"),url(../media/KaTeX_Main-BoldItalic.13355ck5zr48q.woff)format("woff"),url(../media/KaTeX_Main-BoldItalic.3x_u9cepaced0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(../media/KaTeX_Main-Italic.0lig0v9j0700p.woff2)format("woff2"),url(../media/KaTeX_Main-Italic.0afv392dj4w59.woff)format("woff"),url(../media/KaTeX_Main-Italic.2hkw3230mfwcv.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(../media/KaTeX_Main-Regular.1ryvsdzh2w1_e.woff2)format("woff2"),url(../media/KaTeX_Main-Regular.15u8r3b2y7fv4.woff)format("woff"),url(../media/KaTeX_Main-Regular.0symfa7dqj6jd.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(../media/KaTeX_Math-BoldItalic.1oopuu636h4il.woff2)format("woff2"),url(../media/KaTeX_Math-BoldItalic.12pl58orkw9rg.woff)format("woff"),url(../media/KaTeX_Math-BoldItalic.0y5w36a5aq__2.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(../media/KaTeX_Math-Italic.32405s1aq8vas.woff2)format("woff2"),url(../media/KaTeX_Math-Italic.0w0b1ugh62cfr.woff)format("woff"),url(../media/KaTeX_Math-Italic.2vkekfblmz5nb.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(../media/KaTeX_SansSerif-Bold.0h3wi2z_eouyg.woff2)format("woff2"),url(../media/KaTeX_SansSerif-Bold.1ovw5p-yjp56g.woff)format("woff"),url(../media/KaTeX_SansSerif-Bold.2d03q85pwxpti.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(../media/KaTeX_SansSerif-Italic.0wkjc4dm2kcit.woff2)format("woff2"),url(../media/KaTeX_SansSerif-Italic.1qavw__2zz8gk.woff)format("woff"),url(../media/KaTeX_SansSerif-Italic.3i-q087b23-m8.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(../media/KaTeX_SansSerif-Regular.2peiewu59z3d-.woff2)format("woff2"),url(../media/KaTeX_SansSerif-Regular.1i4afx8nk8n4r.woff)format("woff"),url(../media/KaTeX_SansSerif-Regular.31pbu25feko_c.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(../media/KaTeX_Script-Regular.11h14300o9pd0.woff2)format("woff2"),url(../media/KaTeX_Script-Regular.3110jb9c-bxna.woff)format("woff"),url(../media/KaTeX_Script-Regular.28p_x7iz71ofe.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size1-Regular.03lhvx36ekcou.woff2)format("woff2"),url(../media/KaTeX_Size1-Regular.1slf4bh0hc6vm.woff)format("woff"),url(../media/KaTeX_Size1-Regular.1y57-ck23ey8c.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size2-Regular.14s5gg-puz6h-.woff2)format("woff2"),url(../media/KaTeX_Size2-Regular.0-kwyvx03omo8.woff)format("woff"),url(../media/KaTeX_Size2-Regular.2u0s-b07k2o9m.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size3-Regular.1n1rgzz84z8r9.woff2)format("woff2"),url(../media/KaTeX_Size3-Regular.04o9a_02gu_e8.woff)format("woff"),url(../media/KaTeX_Size3-Regular.1pkn-dge4q0fv.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size4-Regular.2sgotkdv3dcyv.woff2)format("woff2"),url(../media/KaTeX_Size4-Regular.3p2r1l7xmebxv.woff)format("woff"),url(../media/KaTeX_Size4-Regular.2uelkfk2yna5e.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(../media/KaTeX_Typewriter-Regular.11gr2d2wuwz77.woff2)format("woff2"),url(../media/KaTeX_Typewriter-Regular.12f8myjij3617.woff)format("woff"),url(../media/KaTeX_Typewriter-Regular.3nee9kjfy6nm8.ttf)format("truetype")}.katex{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.18.7"}.katex .katex-mathml{clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{white-space:nowrap;width:min-content;position:relative}.katex .katex-base,.katex .katex-strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;table-layout:fixed;display:inline-table}.katex .vlist-r{display:table-row}.katex .vlist{vertical-align:bottom;display:table-cell;position:relative}.katex .vlist>span{height:0;display:block;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{width:0;overflow:hidden}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.katex .katex-vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .katex-thinbox{flex-direction:row;width:0;max-width:0;display:inline-flex}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .katex-hdashline,.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-rule,.katex .katex-underline .underline-line,.katex .mfrac .frac-line{min-height:1px}.katex .mspace{display:inline-block}.katex .katex-smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.katex-inner,.katex .llap>.katex-inner,.katex .rlap>.katex-inner{position:absolute}.katex .clap>.katex-fix,.katex .llap>.katex-fix,.katex .rlap>.katex-fix{display:inline-block}.katex .llap>.katex-inner{right:0}.katex .clap>.katex-inner,.katex .rlap>.katex-inner{left:0}.katex .clap>.katex-inner>span{margin-left:-50%;margin-right:50%}.katex .katex-rule{border:0 solid;display:inline-block;position:relative}.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .katex-hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.katex-root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .katex-sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .katex-sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .katex-sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .katex-sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .katex-sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .katex-sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .katex-sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .katex-sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .katex-sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .katex-sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .katex-sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .katex-sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .katex-sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .katex-sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .katex-sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .katex-sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .katex-sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .katex-sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .katex-sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .katex-sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .katex-sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .katex-sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .katex-sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .katex-sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .katex-sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .katex-sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .katex-sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .katex-sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .katex-sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .katex-sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .katex-sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .katex-sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .katex-sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .katex-sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .katex-sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .katex-sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .katex-sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .katex-sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .katex-sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .katex-sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .katex-sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .katex-sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .katex-sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .katex-sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .katex-sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .katex-sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .katex-sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .katex-sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .katex-sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .katex-sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .katex-sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .katex-sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .katex-sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .katex-sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .katex-sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .katex-sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .katex-sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .katex-sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .katex-sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .katex-sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .katex-sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .katex-sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .katex-sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .katex-sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .katex-sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .katex-sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .katex-sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .katex-sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .katex-sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{width:.12em;display:inline-block}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .katex-accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .katex-accent .accent-body{position:relative}.katex .katex-accent .accent-body:not(.accent-full){width:0}.katex .katex-overlay{display:block}.katex .mtable .vertical-separator{min-width:1px;display:inline-block}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;height:inherit;width:100%;display:block;position:absolute}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;min-width:0;max-width:none;min-height:0;max-height:none}.katex .katex-stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{width:100%;position:relative;overflow:hidden}.katex .halfarrow-left{width:50.2%;position:absolute;left:0;overflow:hidden}.katex .halfarrow-right{width:50.2%;position:absolute;right:0;overflow:hidden}.katex .brace-left{width:25.1%;position:absolute;left:0;overflow:hidden}.katex .brace-center{width:50%;position:absolute;left:25%;overflow:hidden}.katex .brace-right{width:25.1%;position:absolute;right:0;overflow:hidden}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{box-sizing:border-box;border:.04em solid}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .katex-sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .reflectbox{display:inline-block;transform:scaleX(-1)}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.katex-tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.katex-tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}