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.lv3-top{display:flex;align-items:center;justify-content:space-between;gap:20px;position:relative;z-index:21;min-width:0;padding:8px 0}.lv3-brand{display:flex;align-items:center;gap:14px;color:var(--v3-ink);text-decoration:none}.lv3-brand b{font-size:34px;line-height:1;letter-spacing:-2px;font-weight:900}.lv3-brand b span{color:var(--v3-blue);font-size:25px;position:relative;top:-13px;padding-left:3px}.lv3-brand>span{border-left:1px solid #b7bdc6;padding-left:13px;font-size:8px;letter-spacing:1.5px;line-height:1.7;font-weight:750}.lv3-profile-anchor{margin-left:auto}.lin.lv3 .lv3-top.has-title{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:20px}.lv3-top.has-title .lv3-profile-anchor{grid-column:3;justify-self:end}.lv3-top-title{min-width:0;text-align:center}.lv3-page-title{display:flex;align-items:center;justify-content:center}.lv3-page-title .lv3-kicker{padding-right:16px;margin-right:16px;border-right:1px solid #b7bdc6;line-height:1.7;white-space:nowrap}.lin.lv3 .lv3-page-title h1{position:relative;width:auto;max-width:none;font-size:clamp(25px,2.25vw,34px);line-height:1.2;font-weight:700;letter-spacing:-.5px;white-space:nowrap}.lv3-page-title h1 em{padding:0 .04em .16em;background:var(--v3-pen) 0 100% / 100% .34em no-repeat;font:italic 400 1.1em/1 var(--lin-serif)}.v3-igo-mark{position:relative;display:inline-grid;place-items:center;flex:none;width:var(--mark);height:var(--mark);border:1.5px solid var(--v3-ink);border-radius:32%;background:var(--v3-blue);box-shadow:2px 2px 0 var(--v3-ink);color:#fff;transform:rotate(-4deg)}.v3-igo-mark b{font-size:calc(var(--mark) * .3);font-weight:900;letter-spacing:-.04em;line-height:1}.v3-igo-mark i{position:absolute;top:15%;right:13%;width:calc(var(--mark) * .14);height:calc(var(--mark) * .14);border-radius:50%;background:#ffd966}.lin.lv3 .lv3-profile-anchor .child-profile-panel{top:calc(100% + 12px);right:0;bottom:auto;left:auto;width:min(340px,calc(100vw - 70px));max-height:calc(100dvh - 125px);overflow-y:auto;gap:18px;border:1.5px solid var(--v3-ink);border-radius:12px;background:var(--v3-paper);box-shadow:4px 4px 0 var(--v3-ink);padding:20px}.lin.lv3 .child-profile-panel:after{display:none}.lin.lv3 .child-profile-panel-head{grid-template-columns:42px minmax(0,1fr);gap:12px}.lin.lv3 .child-profile-panel-head .child-profile-panel-avatar{display:grid;place-items:center;width:42px;height:42px;margin:0;border:1px solid var(--v3-ink);border-radius:7px;background:#d2ddfb;box-shadow:none;color:var(--v3-ink);font-size:20px}.lin.lv3 .child-profile-panel-head h2{font-size:18px}.lin.lv3 .child-profile-panel-head p{margin-bottom:4px;font-size:10px;color:var(--v3-blue)}.lin.lv3 .child-profile-panel-head span{font-size:11px}.lin.lv3 .child-visual-modes{border-top:1px solid var(--v3-rule);padding-top:15px}.lin.lv3 .child-visual-modes-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;margin-top:10px}.lin.lv3 .child-visual-mode-option{min-height:36px;border:1px solid var(--v3-rule);border-radius:6px;background:transparent;color:var(--v3-ink);box-shadow:none;font-size:11px}.lin.lv3 .child-visual-mode-option.is-active{border-color:var(--v3-blue);background:#e4eafe;color:#2446bc}.lin.lv3 .child-visual-mode-swatch.is-linen-v3,.lin.lv3 .child-visual-mode-swatch.is-linen-studio{background:linear-gradient(135deg,#fffdf7 55%,#2d55e0 55%)}.lin.lv3 .v3-profile-grade{display:grid;gap:10px;border-top:1px solid var(--v3-rule);padding-top:15px}.lin.lv3 .v3-profile-grades{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}.lin.lv3 .v3-profile-grades button{min-height:36px;border:1px solid var(--v3-rule);border-radius:8px;background:transparent;color:var(--v3-ink);font-size:13px;font-weight:800;font-variant-numeric:tabular-nums}.lin.lv3 .v3-profile-grades button:hover{border-color:var(--v3-ink)}.lin.lv3 .v3-profile-grades button.is-active{border-color:var(--v3-ink);background:var(--v3-blue);color:#fff;box-shadow:2px 2px 0 var(--v3-ink)}.lin.lv3 .v3-profile-grade p{margin:0;color:var(--v3-muted);font-size:11px;line-height:1.5}.lin.lv3 .child-profile-logout{min-height:36px;border:1px solid var(--v3-rule);border-radius:6px;background:transparent;color:var(--v3-muted);box-shadow:none;font-size:12px}.lin.lv3 .lv3-profile-button{display:flex;align-items:center;gap:12px;min-height:43px;max-width:235px;padding:5px 11px 5px 5px;border:1.5px solid #172842;border-radius:9px;background:var(--v3-paper);box-shadow:3px 3px #172842;color:var(--v3-ink)}.lv3-profile-button>span:first-child{display:grid;place-items:center;width:31px;height:31px;background:#d2ddfb;border:1px solid #172842;border-radius:5px;font-weight:800;flex:none}.lv3-profile-button>span:nth-child(2){min-width:0;text-align:left}.lv3-profile-button strong{display:block;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lv3-profile-button small{font-size:9px;color:var(--v3-muted)}.child-main-area:has(.lv3) .v3-subject-switch{border-color:#9caec9;background:#e0e6f1;box-shadow:none}.child-main-area:has(.lv3) .v3-subject-switch button{font-size:12px}.child-main-area:has(.lv3) .v3-subject-switch button[aria-pressed=true]{color:#2548bd}section.lin.lv3>.lv3-workspace{position:relative!important;inset:auto!important;display:flex;flex-direction:column;gap:0;width:100%!important;height:100%;min-height:0;min-width:0;max-width:none;margin:0;padding:8px 5px 14px 0;overflow:hidden}.lv3-footer{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;border-top:1px solid #dccfb0;min-width:0}.lv3-signoff{display:flex;align-items:center;gap:8px;font-size:12px;color:#8c7f63;white-space:nowrap}.lv3-signoff em{font:italic 14px var(--lin-serif)}.lv3-grade{text-align:right;font-size:10px;color:#8c7f63;white-space:nowrap}.lv3-nav{position:relative;isolation:isolate;display:flex;align-items:center;gap:7px}.lv3-nav-marker{position:absolute;z-index:-1;border:1.5px solid #172842;border-radius:6px;background:#d0dcfa;box-shadow:2px 3px #172842;pointer-events:none}.lv3-nav-marker[hidden]{display:none}.lv3-nav-marker.to-right{transition:right var(--lead) cubic-bezier(.22,.9,.3,1),left var(--trail) cubic-bezier(.34,1.28,.64,1) 60ms}.lv3-nav-marker.to-left{transition:left var(--lead) cubic-bezier(.22,.9,.3,1),right var(--trail) cubic-bezier(.34,1.28,.64,1) 60ms}@keyframes lv3-nav-arrive{0%,45%{transform:none}70%{transform:translateY(-2px) scale(1.16) rotate(-6deg)}to{transform:none}}@keyframes lv3-nav-ink{0%,40%{color:#5f6b82}}.lin.lv3 .lv3-nav button{position:relative;display:flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:10px 14px;border:1.5px solid transparent;border-radius:6px;background:transparent;color:#5f6b82;font-size:12px;font-weight:700;white-space:nowrap}.lin.lv3 .lv3-nav button:hover{background:#f4ead3}.lin.lv3 .lv3-nav button[aria-current]{background:transparent;color:#172842}.lin.lv3 .lv3-nav.is-sliding button[aria-current]{animation:lv3-nav-ink .46s ease-out}.lin.lv3 .lv3-nav.is-sliding button[aria-current] svg{animation:lv3-nav-arrive .56s cubic-bezier(.3,1.2,.5,1)}.lv3-kicker{display:block;font-size:9px;letter-spacing:1.5px;font-weight:800;line-height:1.5;color:var(--v3-blue)}.lv3-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:4px 0 22px;border-bottom:1px solid #a9b5c7;flex:none}.lin.lv3 .lv3-heading h1{margin-top:7px;font-size:clamp(28px,2.5vw,37px);line-height:1.1;letter-spacing:-1px;font-weight:850;color:var(--v3-ink)}.lv3-heading h1 em{font:italic 450 1.06em/1 var(--lin-serif)}.lin.lv3 .lv3-heading p{margin-top:8px;font-size:12px;color:var(--v3-muted)}.lin.lv3 .lv3-primary{display:inline-flex;align-items:center;justify-content:center;gap:14px;min-height:47px;padding:12px 18px;border:1.5px solid #203968;border-radius:8px;background:var(--v3-blue);color:#fff;box-shadow:3px 4px #172842;font-size:14px;font-weight:750;transition:transform .15s,box-shadow .15s}.lin.lv3 .lv3-primary:hover{transform:translate(-1px,-1px);box-shadow:4px 5px #172842}.lin.lv3 .lv3-primary:active{transform:translate(2px,2px);box-shadow:1px 2px #172842}.lin.lv3 .lv3-text-action{display:inline-flex;align-items:center;gap:9px;padding:8px 0;border:0;background:transparent;color:var(--v3-blue);font-size:12px;font-weight:650}.lv3-home,.v3q,.lv3-topics-page{display:flex;flex-direction:column;height:100%;min-height:0;min-width:0}.lv3-mode-line{display:flex;gap:8px;margin:20px 0;flex:none}.lin.lv3 .lv3-mode-line button{display:flex;align-items:center;gap:9px;padding:10px 17px;border:1px solid #b7c3d6;border-radius:6px;color:#657590;background:transparent;font-size:12px;font-weight:700}.lin.lv3 .lv3-mode-line button[aria-selected=true]{color:#2149b6;border-color:#7892ce;background:#e0e8fb}.lv3-grade-select{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--v3-muted)}.lv3-grade-select select{border:1px solid #adbad1;border-radius:6px;padding:7px 12px;color:var(--v3-blue);background:var(--v3-paper);font-weight:750}.lv3-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:15px;flex:1;min-height:160px;padding:25px;text-align:center;color:var(--v3-muted)}.lin.lv3 .lv3-empty h2,.lin.lv3 .lv3-empty h3{color:var(--v3-ink);font-size:20px}@media(max-width:1180px){.lv3-brand>span,.lv3-grade{display:none}.lv3-footer{grid-template-columns:1fr auto}.lin.lv3 .lv3-nav button{padding:9px 11px;font-size:11px;gap:7px}}@media(max-height:760px)and (min-width:981px){section.lin.lv3{grid-template-rows:64px minmax(0,1fr) 59px}.lv3-heading{padding-bottom:16px}.lin.lv3 .lv3-heading h1{font-size:30px}}@media(max-height:640px)and (min-width:981px){.lv3-heading{padding-bottom:12px}.lin.lv3 .lv3-heading h1{font-size:27px}.lin.lv3 .lv3-primary{min-height:42px;font-size:12px;padding:10px 14px}.lv3-mode-line{margin:13px 0}}@media(max-width:980px){section.lin.lv3{grid-template-rows:108px minmax(0,1fr) 62px}.lv3-top{align-items:flex-start!important}.lin.lv3 .lv3-top.has-title{grid-template-columns:1fr 1fr;align-items:center!important;gap:14px}.lv3-top.has-title .lv3-top-title{grid-column:1 / -1;grid-row:2}.lv3-top.has-title .lv3-profile-anchor{grid-column:2;grid-row:1}.lin.lv3 .lv3-page-title h1{font-size:28px}.child-main-area:has(.lv3) .v3-subject-switch-slot{top:65px}.lv3-signoff,.lv3-grade{display:none}.lv3-footer{display:flex;justify-content:center}}@media(max-width:680px){section.lin.lv3{border-width:6px;border-radius:20px;padding:0 18px;grid-template-rows:105px minmax(0,1fr) 60px}section.lin.lv3>.lv3-workspace{overflow-y:auto;padding-right:3px}.lv3-home,.v3q,.lv3-topics-page{height:auto;min-height:100%}.lv3-heading{gap:12px;align-items:flex-start}.lin.lv3 .lv3-heading h1{font-size:27px}.lv3-heading>.lv3-text-action{font-size:0}.lv3-nav{width:100%;gap:0;justify-content:space-between}.lin.lv3 .lv3-nav button{flex-direction:column;gap:5px;padding:8px 6px;font-size:8px;border-width:1px}.lv3-nav-marker{border-width:1px}.lv3-nav svg{width:17px;height:17px}.lv3-profile-button small{display:none}.lin.lv3 .lv3-page-title h1{font-size:clamp(18px,4.85vw,21px);letter-spacing:-.3px}.lv3-page-title .lv3-kicker{padding-right:10px;margin-right:10px}.lv3-profile-button>span:nth-child(2){max-width:105px}}@media(prefers-reduced-motion:reduce){.lin.lv3 *,.lin.lv3 *:before,.lin.lv3 *:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}.lv3-mobile-nav,.lv3-mobile-scrim{display:none}@media(max-width:620px){section.lin.lv3{grid-template-rows:105px minmax(0,1fr) auto;padding:0 16px;border-width:0;border-radius:0}.lin.lv3 .lv3-brand b{font-size:30px}.lin.lv3 .lv3-profile-button{position:relative;justify-content:center;width:44px;height:44px;min-height:0;padding:0;gap:0;border-radius:14px;background:#d2ddfb;box-shadow:2px 3px 0 var(--v3-ink);transform:rotate(3deg);transition:transform .2s cubic-bezier(.3,1.4,.5,1)}.lin.lv3 .lv3-profile-button:active{transform:rotate(0) translate(1px,1px)}.lin.lv3 .lv3-profile-button>span:first-child{width:100%;height:100%;border:0;background:transparent;font-size:18px;font-weight:850}.lin.lv3 .lv3-profile-button>span:nth-child(2){display:none}.lin.lv3 .lv3-profile-button>svg{position:absolute;right:-7px;bottom:-7px;width:20px;height:20px;padding:3px;border:1.5px solid var(--v3-ink);border-radius:50%;background:var(--v3-paper)}.lv3-footer{position:relative;z-index:40;padding:6px 0 10px}.lin.lv3 .lv3-footer{border-top:0}.lv3-footer .lv3-nav{display:none}.lv3-mobile-nav{position:relative;z-index:1;display:grid;grid-template-columns:repeat(2,minmax(0,1fr)) 72px repeat(2,minmax(0,1fr));align-items:center;width:100%;min-height:64px;padding:5px 6px;border:1.5px solid var(--v3-ink);border-radius:22px;background:var(--v3-paper);box-shadow:3px 4px 0 var(--v3-ink)}.lin.lv3 .lv3-mobile-nav>button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-width:0;min-height:52px;padding:2px 0 0;border:0;background:transparent;color:#56647a;font-size:10px;font-weight:750;white-space:nowrap}.lv3-tab-icon{display:grid;place-items:center;width:46px;height:29px;border:1.5px solid transparent;border-radius:99px;transition:background .2s,border-color .2s,box-shadow .2s,transform .2s}.lin.lv3 .lv3-mobile-nav>button[aria-current]{color:var(--v3-ink);font-weight:850}.lv3-mobile-nav>button[aria-current] .lv3-tab-icon{border-color:var(--v3-ink);background:#d2ddfb;box-shadow:2px 2px 0 var(--v3-ink);transform:translateY(-1px)}.lin.lv3 .lv3-mobile-nav button:focus-visible{outline:3px solid var(--v3-blue);outline-offset:3px}.lv3-mobile-launcher{display:grid;justify-items:center}.lin.lv3 .lv3-mobile-plus{position:relative;z-index:2;display:grid;place-items:center;width:60px;height:60px;margin-top:-30px;padding:0;border:1.5px solid var(--v3-ink);border-radius:50%;background:var(--v3-blue);color:#fff;box-shadow:2px 4px 0 var(--v3-ink);transition:transform .26s cubic-bezier(.3,1.4,.5,1),background .2s,box-shadow .15s}.lv3-mobile-plus:after{content:"";position:absolute;top:7px;right:7px;width:10px;height:10px;border:1.5px solid var(--v3-ink);border-radius:50%;background:#ffd966;transition:transform .2s}.lv3-mobile-plus svg{transition:transform .3s cubic-bezier(.3,1.4,.5,1)}.lin.lv3 .lv3-mobile-plus:active{transform:translate(1px,2px);box-shadow:1px 2px 0 var(--v3-ink)}.lin.lv3 .lv3-mobile-plus[aria-expanded=true]{background:var(--v3-ink)}.lv3-mobile-plus[aria-expanded=true] svg{transform:rotate(135deg)}.lv3-mobile-plus[aria-expanded=true]:after{transform:scale(0)}.lv3-mobile-scrim{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;display:block;background:#08235457;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);animation:lv3-scrim-in .2s ease-out}@keyframes lv3-scrim-in{0%{opacity:0}}.lv3-mobile-tray{position:absolute;right:-2px;bottom:calc(100% + 40px);left:-2px;z-index:3;max-height:calc(100dvh - 170px);overflow-y:auto;padding:16px 14px 14px;border:1.5px solid var(--v3-ink);border-radius:22px;background:var(--v3-paper);box-shadow:4px 5px 0 var(--v3-ink);transform-origin:50% 110%;animation:lv3-tray-in .28s cubic-bezier(.2,1.1,.4,1);scrollbar-width:none}@keyframes lv3-tray-in{0%{opacity:0;transform:translateY(18px) scale(.94)}}.lv3-mobile-tray>header{padding:0 4px 12px}.lin.lv3 .lv3-mobile-tray h2{margin-top:3px;font-size:23px;font-weight:700;letter-spacing:-.4px}.lv3-mobile-tray h2 em{padding:0 .04em .16em;background:var(--v3-pen) 0 100% / 100% .34em no-repeat;font:italic 400 1.1em/1 var(--lin-serif)}.lv3-mobile-shortcuts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.lin.lv3 .lv3-mobile-shortcuts>button{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:78px auto;align-items:start;gap:8px 2px;min-width:0;padding:6px 6px 10px;border:1.5px solid var(--v3-ink);border-radius:16px;background:var(--v3-paper);color:var(--v3-ink);box-shadow:2px 3px 0 var(--v3-ink);text-align:left;animation:lv3-deal .42s cubic-bezier(.2,1.15,.4,1) backwards;animation-delay:calc(40ms + var(--n, 0) * 45ms)}.lin.lv3 .lv3-mobile-shortcuts>button:active{transform:translate(1px,2px);box-shadow:1px 1px 0 var(--v3-ink)}.lv3-mobile-shortcuts .v3h-door-art{grid-column:1 / 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.child-topics-grade-selector-menu button{grid-column:auto;width:100%;height:44px;min-height:44px;border:1.5px solid var(--v3-rule);border-radius:7px;background:var(--v3-paper);color:var(--v3-ink);box-shadow:none;font-size:15px;font-weight:800}.lin.lv3 .child-quiz-grade-selector .child-topics-grade-selector-menu button:hover,.lin.lv3 .child-quiz-grade-selector .child-topics-grade-selector-menu button.assigned{border-color:#7f96cb;background:#e8edf9;color:var(--v3-ink)}.lin.lv3 .child-quiz-grade-selector .child-topics-grade-selector-menu button.active{border-color:var(--v3-ink);background:var(--v3-blue);color:#fff;box-shadow:2px 2px 0 var(--v3-ink)}@media(max-width:620px){.lin.lv3 .child-quiz-grade-selector .child-topics-grade-selector-menu{position:relative;inset:auto;width:100%;margin-top:10px}}.lv3 .child-quiz-topic-layout,.lv3 .child-quiz-settings-layout{gap:25px;grid-template-columns:minmax(0,1fr) 265px}.child-dashboard[data-student-appearance=linen-v3] .lin.lv3 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span{position:absolute;left:var(--at);transform:translate(-50%)}.v3ep-primary.is-wide{width:100%}.v3ep-link.is-center{align-self:center;display:flex;margin:12px auto 0;text-decoration:underline;text-underline-offset:3px}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]){display:grid;grid-template-columns:minmax(0,1.3fr) minmax(360px,1fr);grid-template-rows:auto auto auto minmax(0,1fr) auto;grid-template-areas:"board kicker" "board head" "board intro" "board work" "keep work";column-gap:clamp(20px,2.6vw,40px);row-gap:12px;width:min(1340px,100%);flex:none;height:100%;min-height:0;margin:0 auto;padding:clamp(6px,1.2vh,14px) clamp(8px,1.6vw,24px) 10px;border:0;border-radius:0;background:none;box-shadow:none;overflow:visible;isolation:auto;color:var(--ink);align-content:center}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]):before,#root .v3ep 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.notebook-reminder-tape{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) :is(.v3ep-notebook-page,.v3m-card-body,.v3b-model-column):before,#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) :is(.v3ep-notebook-page,.v3m-card-body,.v3b-model-column):after{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .notebook-reminder-title{position:static;inset:auto;transform:none;margin:0;padding:0;border:0;background:none;box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .notebook-reminder-title{color:var(--amber-ink);font-size:10.5px;font-weight:900;letter-spacing:1.2px;text-transform:uppercase}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .notebook-reminder p{margin:0;font-size:15px;font-weight:700;line-height:1.45;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]):not(:has(.v3a-diagram-area)){grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto auto auto auto;grid-template-areas:"kicker" "head" "intro" "work" "keep";max-width:1080px;align-content:center}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .v3t-full-column{grid-area:work;display:block}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-recap{grid-template-columns:minmax(0,1fr);grid-template-rows:1fr auto auto auto auto auto 1fr;grid-template-areas:"." "kicker" "head" "intro" "board" "keep" ".";max-width:1180px}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-recap .v3t-full-column{display:contents}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-recap .v3a-diagram-area{height:auto;display:block}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-recap .v3t-recap{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:0}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .v3t-recap-item{display:flex;flex-direction:column;gap:10px;padding:18px;border:0;border-radius:22px;background:#fff;box-shadow:var(--soft-shadow),inset 0 0 0 1.5px var(--line);text-align:left;animation:v3ep-rise .32s var(--ease) both}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .v3t-recap-item h3{margin:0;font-size:17px;font-weight:850;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .v3t-recap-item p{margin:0;flex:1;font-size:14.5px;line-height:1.5;color:#39465c;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .v3t-recap-item .v3t-worked-formula{padding:10px 12px;border-radius:14px;background:#f6f1e4;overflow-x:auto}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .v3t-return{align-self:flex-start;min-height:40px;padding:6px 16px;border:1.5px solid #cfc5b1;border-radius:99px;background:#fff;color:var(--ink);font-size:13.5px;font-weight:800;cursor:pointer}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .v3t-return:hover{border-color:var(--ink)}.v3ep-save-error{margin:0 0 8px;padding:10px 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var(--serif);color:#8c7f63;text-align:center}.v3ep :is(.v3ep-nb,.v3ap-regular) .v3d-text{display:grid;gap:12px;width:min(440px,100%);margin:auto;padding:22px 24px;border-radius:20px;background:#fff;box-shadow:var(--soft-shadow),inset 0 0 0 1.5px var(--line)}.v3ep :is(.v3ep-nb,.v3ap-regular) .v3d-text p{margin:0;font-size:17px;font-weight:650;line-height:1.45;text-align:center}.v3ep .v3ep-board.is-notebook-board{padding:16px 18px}.v3ep .v3ap-drawing:has(.v3ap-regular){min-height:320px}.v3ep .v3ap-regular .v3p-legend{display:none}.v3ep .v3ap-regular .v3p-diagram{max-height:calc(100dvh - 330px)}@media(max-width:980px){.v3ep .v3ap-regular .v3p-diagram{max-height:360px}}.v3ep-verdict{display:grid;gap:4px;padding:12px 16px;border-radius:16px;font-size:14.5px;line-height:1.5;animation:v3ep-rise .26s var(--ease) both}.v3ep-verdict b{font-size:15px;font-weight:850}.v3ep-verdict.is-yes{background:var(--teal-soft);color:#1e5a4d}.v3ep-verdict.is-no{background:var(--amber-soft);color:#6b4310}.v3ep-formulas{display:grid;gap:8px;margin:0}.v3ep-formulas>div{display:grid;grid-template-columns:112px minmax(0,1fr);gap:2px 12px;align-items:center;padding:10px 14px;border-radius:16px;background:#fff;box-shadow:var(--soft-shadow),inset 0 0 0 1.5px var(--line);animation:v3ep-rise .32s var(--ease) both;animation-delay:calc(var(--i) * 70ms)}.v3ep-formulas dt{font-size:12.5px;font-weight:850;line-height:1.3;color:var(--amber-ink)}.v3ep-formulas dd{display:grid;gap:2px;margin:0;min-width:0}.v3ep-formulas dd .igo-math-display{margin:0;text-align:left;overflow-x:auto}.v3ep-formulas dd .katex-display{margin:0;text-align:left}.v3ep-formulas small{font-size:12.5px;color:var(--muted)}.v3ep-steps li .igo-math-display{margin:4px 0}.v3ep-steps li .katex-display{margin:0;text-align:left}.v3ep-step-math{font-size:17px;line-height:1.5}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-check-answer{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3a-answer-panel{display:block;margin:0;padding:0;border:0;border-radius:0;background:none;box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-response-form{display:grid;gap:10px;margin:0;padding:16px;border:0;border-radius:20px;background:#fff;box-shadow:var(--soft-shadow),inset 0 0 0 1.5px var(--line);text-align:left;animation:v3ep-rise .32s var(--ease) both .15s}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-response-form:before{content:"Twoja kolej" / "";color:var(--coral);font-size:10.5px;font-weight:900;letter-spacing:1.2px;text-transform:uppercase}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-options{display:grid;grid-template-columns:minmax(0,1fr);gap:8px;width:100%;min-width:0;margin:0;padding:0;border:0}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-choice-legend{float:left;width:100%;margin:0 0 4px;padding:0;font-size:17.5px;font-weight:800;line-height:1.35;text-align:left;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-choice-legend p{margin:0;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-options>button{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;min-height:48px;margin:0;padding:9px 16px;border:0;border-radius:14px;background:#fdfbf5;color:var(--ink);box-shadow:inset 0 0 0 1.5px 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.v3t-options>button:focus-visible{outline:3px solid var(--blue);outline-offset:2px}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-options>button:disabled{cursor:default;opacity:1}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-options>button:is(.is-right,.correct-answer){background:var(--teal-soft);color:#1e5a4d;box-shadow:inset 0 0 0 2px var(--teal);animation:v3ep-pop .36s var(--spring) both}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-options>button:is(.is-right,.correct-answer):after{content:"";display:block;flex:none;width:17px;height:17px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231f7d6f' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / contain 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.lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice:is([data-wrong-picks~="2"]) .v3t-options>button[data-choice-index="2"]:not(#v3ep-no-id),#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice:is([data-wrong-picks~="3"]) .v3t-options>button[data-choice-index="3"]:not(#v3ep-no-id),#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice:is([data-wrong-picks~="4"]) .v3t-options>button[data-choice-index="4"]:not(#v3ep-no-id),#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice:is([data-wrong-picks~="5"]) .v3t-options>button[data-choice-index="5"]:not(#v3ep-no-id){background:#fff6e8;color:#6b4310;box-shadow:inset 0 0 0 2px #efc98a;pointer-events:none}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-response-form 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.lesson-feedback-icon{position:static;display:grid;place-items:center;width:22px;height:22px;margin:1px 0 0;padding:0;border:0;border-radius:0;background:none;box-shadow:none;color:inherit;transform:none}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-response-form .lesson-interaction-feedback .lesson-feedback-icon svg{width:20px;height:20px}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-response-form .lesson-interaction-feedback>span:last-child{display:grid;justify-items:start;gap:2px;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-response-form .lesson-interaction-feedback :is(strong,p){margin:0;color:inherit;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-response-form .lesson-interaction-feedback 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.lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .v3m-board{padding:8px 8px 10px;border-radius:18px}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .v3m-card-head h2{font-size:25px;line-height:1.15;letter-spacing:-.5px}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .v3t-work-column{grid-template-columns:minmax(0,1fr);justify-items:stretch}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]) .v3t-work-column :is(.v3a-answer-panel,.v3t-response-form){grid-column:1 / -1}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-response-form{width:auto;margin:0;padding:14px;border-radius:18px}#root .v3ep .lin.lv3.v3m.v3n.v3t.v3ep-notebook:not([data-v3-maths-presentation=episode]).is-instant-choice .v3t-options>button{min-height:52px;padding:10px 14px;font-size:15.5px}#root .v3ep 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*:after,.v3ep{animation:none!important;transition:none!important}}.v3ep-choice-response{display:contents}.v3ep.is-maths-notebook .v3ep-tools{max-width:100%}.v3ep.is-maths-notebook .v3ep-ask{flex:0 0 auto}@media(min-width:981px){.v3ep.is-maths-notebook .v3ep-progress{min-width:0}.v3ep.is-maths-notebook .v3ep-status{flex:1 1 auto}}.v3ep.is-maths-notebook .v3ep-parts{flex:0 1 auto}.v3ep.is-maths-notebook .v3ep-parts>li{flex:0 0 auto;min-width:0}.v3ep.is-maths-notebook .v3ep-parts>li.is-now{flex:0 1 auto}.v3ep.is-maths-notebook .v3ep-parts .is-now button{min-width:0;max-width:100%}.v3ep.is-maths-notebook .v3ep-parts .is-now i{flex:0 0 auto}.v3ep.is-maths-notebook .v3ep-parts .is-now .v3ep-part-label{min-width:0}.v3ep.is-maths-notebook .v3ep-title h1{white-space:normal;overflow:visible;text-overflow:clip;text-wrap:balance}.v3ep.is-maths-notebook .v3ep-tools{flex-wrap:wrap;justify-content:flex-end;row-gap:4px}.v3ep.is-maths-notebook .v3ep-parts{flex:1 0 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.v3ep .v3ep-page:has(>[data-v3-maths-presentation=episode]){height:100%}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]{--v3ep-angle-side: minmax(380px, 1fr);display:grid;grid-template-columns:minmax(0,1.12fr) var(--v3ep-angle-side);grid-template-rows:minmax(0,1fr) auto auto auto auto auto auto minmax(0,1fr);grid-template-areas:"board ." "board kicker" "board head" "board intro" "board work" "board help" "board keep" "board .";column-gap:clamp(20px,2.8vw,40px);row-gap:10px;flex:none;width:min(1340px,100%);min-height:100%;height:auto;margin:0 auto;padding:clamp(6px,1.4vh,16px) clamp(8px,1.6vw,24px) 20px;overflow:visible;color:var(--ink);font-size:.9375rem}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.child-lesson-slide,.v3n-native-page,.angles-lesson-stage,.notebook-angle-teaching,.v3a-layout,.v3a-work,.lesson-interaction-keyboard-boundary,.lesson-interaction,.v3a-response-layout,.v3a-worked-examples,.v3a-worked-example){display:contents}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.v3a-diagram-area,.learner-item-stimulus,.angles-figure):has(.v3a-lab-layout),#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-layout{display:contents}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3ep-notebook-kicker{grid-area:kicker;align-self:end}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3m-card-head{grid-area:head;display:block;margin:0;padding:0;border:0;background:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3m-card-head :is(.v3m-kind,.v3m-count){display:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3m-card-head h2{margin:0;font-size:clamp(1.5rem,2vw,1.9375rem);font-weight:750;line-height:1.14;letter-spacing:-.6px;text-align:left;text-wrap:balance;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-intro{grid-area:intro;display:grid;grid-template-columns:minmax(0,1fr);gap:6px;margin:0;padding:0;border:0;background:none;box-shadow:none;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-intro :is(.angle-intro,.v3n-angle-intro){display:grid;grid-template-columns:minmax(0,1fr);gap:4px;margin:0;padding:0;border:0;background:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-intro>*{grid-column:1 / -1;grid-row:auto;width:auto;min-width:0;margin:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-intro :is(.angle-intro,.v3n-angle-intro)>*{grid-column:1 / -1;grid-row:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-intro :is(.angle-intro,.v3n-angle-intro) h2{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].is-try .v3a-intro .angle-intro h2{display:block;margin:0;color:var(--amber-ink);font-size:.6875rem;font-weight:850;line-height:1.4;letter-spacing:1.2px;text-transform:uppercase}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-intro p{max-width:none;margin:0;font-size:.96875rem;line-height:1.55;color:#39465c;text-align:left;text-wrap:pretty}#root .v3ep [data-v3-maths-presentation=episode] [data-notebook-template=context]{display:grid;gap:6px;margin:0;padding:0;border:0;border-radius:0;background:none;box-shadow:none}#root .v3ep [data-v3-maths-presentation=episode] [data-notebook-template=context] p{margin:0;padding:0;border:0;background:none;box-shadow:none;font-size:.96875rem;line-height:1.55;color:#39465c;text-align:left;text-wrap:pretty}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.v3a-diagram-area:not(:has(.v3a-lab-layout)),.v3a-lab-diagram){grid-area:board;align-self:start;position:sticky;top:0;display:flex;flex-direction:column;justify-content:center;gap:8px;width:auto;height:clamp(320px,calc(100dvh - 240px),660px);min-height:0;max-height:none;margin:0;padding:14px 16px 12px;overflow:hidden;border:0;border-radius:24px;background-color:var(--card);background-image:linear-gradient(#f1e9d7 1px,transparent 1px),linear-gradient(90deg,#f1e9d7 1px,transparent 1px);background-size:24px 24px;box-shadow:0 18px 40px -26px #08235480,inset 0 0 0 1.5px var(--line);animation:v3ep-board-in .46s var(--ease) both}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.v3a-diagram-area:not(:has(.v3a-lab-layout)),.v3a-lab-diagram) :is(.learner-item-stimulus,.angle-guided-diagram){display:flex;flex:1;min-height:0;margin:0;padding:0;border:0;background:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.v3a-diagram-area:not(:has(.v3a-lab-layout)),.v3a-lab-diagram) .angles-figure{display:grid;grid-template-rows:minmax(0,1fr) auto;flex:1;width:100%;height:100%;min-height:0;margin:0;padding:0;border:0;background:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson][data-v3-angle-lesson]:not(.v3t) :is(.v3a-diagram-area:not(:has(.v3a-lab-layout)),.v3a-lab-diagram) svg:not(.lucide):not(.katex svg){width:100%;height:100%;min-height:0;max-height:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.v3a-diagram-area:not(:has(.v3a-lab-layout)),.v3a-lab-diagram) figcaption{margin:0;padding:0 8px;font:italic .875rem/1.4 var(--serif);color:#8c7f63;text-align:center}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-static-notes{grid-area:work;display:grid;gap:8px;margin:0;padding:0;border:0;background:none;box-shadow:none;animation:v3ep-rise .32s var(--ease) both .12s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-static-notes .notebook-angle-notes{display:grid;gap:8px;margin:0;padding:0;border:0;background:none;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-static-notes p{position:relative;margin:0;padding:0 0 0 22px;border:0;background:none;text-align:left;font-size:.9375rem;line-height:1.55;color:#2f3c52}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-static-notes p:before{content:"";position:absolute;left:4px;top:9px;width:8px;height:8px;border-radius:50%;background:var(--blue)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-reminder{grid-area:keep;margin:0;padding:0;border:0;background:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .notebook-reminder{position:relative;display:grid;gap:6px;width:auto;max-width:none;margin:0;padding:14px 16px;border:1.5px solid var(--ink);border-radius:16px;background:#fff7df;box-shadow:3px 4px 0 var(--ink);transform:rotate(-.6deg);animation:v3ep-card .42s var(--spring) both .2s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .notebook-reminder:before,#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .notebook-reminder:after,#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .notebook-reminder-tape{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .notebook-reminder-title{position:static;inset:auto;margin:0;padding:0;border:0;background:none;box-shadow:none;transform:none;color:var(--amber-ink);font-size:.65625rem;font-weight:900;letter-spacing:1.2px;text-transform:uppercase}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .notebook-reminder p{margin:0;font-size:.9375rem;font-weight:700;line-height:1.45;text-align:left;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .notebook-reminder-emphasis{padding:0;background:none;color:inherit}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel{grid-area:work;display:grid;gap:10px;align-content:start;justify-items:stretch;width:auto;max-width:none;min-height:0;margin:0;padding:16px;border:0;border-radius:20px;background:#fff;box-shadow:var(--soft-shadow),inset 0 0 0 1.5px var(--line);text-align:left;animation:v3ep-rise .32s var(--ease) both .15s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel>h3{margin:0;font-size:1.09375rem;font-weight:800;line-height:1.35;text-align:left;text-wrap:pretty;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:8px;width:100%;margin:0;padding:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid>button{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;min-height:48px;margin:0;padding:9px 16px;border:0;border-radius:14px;background:#fdfbf5;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line);text-align:left;font-size:.9375rem;font-weight:700;line-height:1.35;cursor:pointer;transform:none;transition:box-shadow .15s,transform .15s,background .15s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid>button>span{display:block;flex:1;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid>button:before,#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid>button:after{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid>button:hover:not(:disabled){box-shadow:inset 0 0 0 1.5px var(--ink);transform:translate(2px)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid>button:focus-visible{outline:3px solid var(--blue);outline-offset:2px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid>button:disabled{cursor:default;opacity:1}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid>button.correct-answer{background:var(--teal-soft);color:#1e5a4d;box-shadow:inset 0 0 0 2px #1f7d6f;animation:v3ep-pop .36s var(--spring) both}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid>button.correct-answer:after{content:"";display:block;flex:none;width:17px;height:17px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231f7d6f' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / contain no-repeat}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid>button.wrong-answer{background:#fff6e8;color:#6b4310;box-shadow:inset 0 0 0 2px #efc98a;animation:v3ep-shake .38s ease both}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel:has(.correct-answer) .lesson-choice-grid>button:not(.correct-answer):not(.wrong-answer){background:transparent;color:var(--muted);box-shadow:inset 0 0 0 1.5px #efe7d8}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is(.v3t,[data-v3-atomic-choice=true]) .v3a-answer-panel:has(.lesson-choice-grid) .lesson-check-button{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .lesson-interaction-feedback{display:grid;grid-template-columns:auto minmax(0,1fr);gap:3px 10px;align-items:start;width:auto;margin:0;padding:12px 16px;border:0;border-radius:16px;box-shadow:none;text-align:left;font-size:.90625rem;line-height:1.5;animation:v3ep-rise .26s var(--ease) both}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .lesson-interaction-feedback:before,#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .lesson-interaction-feedback:after{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .lesson-interaction-feedback .lesson-feedback-icon{display:grid;place-items:center;width:22px;height:22px;margin:1px 0 0;padding:0;border:0;border-radius:0;background:none;color:inherit}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .lesson-interaction-feedback .lesson-feedback-icon svg{width:20px;height:20px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .lesson-interaction-feedback>span:last-child{display:grid;justify-items:start;gap:2px;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .lesson-interaction-feedback strong{display:block;margin:0;color:inherit;font-size:.9375rem;font-weight:850;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .lesson-interaction-feedback:is(.correct,.is-right){background:var(--teal-soft);color:#1e5a4d}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .lesson-interaction-feedback:is(.incorrect,.is-considered){background:var(--amber-soft);color:#6b4310}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel:has(>.lesson-number-field){grid-template-columns:auto auto minmax(0,1fr);column-gap:12px;align-items:center}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel:has(>.lesson-number-field)>*{grid-column:1 / -1}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel:has(>.lesson-number-field)>h3{grid-row:1}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel>.lesson-number-field{grid-row:2;grid-column:1;display:flex;align-items:center;justify-items:start;gap:12px;width:auto;max-width:none;min-width:0;margin:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel>.lesson-check-button{grid-row:2;grid-column:2}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-number-field>span:first-child{flex:none;font-size:.9375rem;font-weight:800;white-space:nowrap;text-align:left;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-number-input-shell{position:relative;display:block;flex:none;width:9.5rem;min-width:0;max-width:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-number-input-shell>input{display:block;width:100%;min-height:50px;margin:0;padding:10px 40px 10px 16px;border:0;border-radius:14px;background:#fff;box-shadow:inset 0 0 0 1.5px #d8cdb7;color:var(--ink);font-size:1.25rem;font-weight:750;font-variant-numeric:tabular-nums;text-align:left;outline:none;transition:box-shadow .15s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-number-input-shell>input:focus{box-shadow:inset 0 0 0 2px var(--blue),0 0 0 4px #dfe6fc}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-number-input-shell>input:disabled{background:#f6f1e4}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-number-input-shell>b{position:absolute;inset-inline-end:16px;top:50%;transform:translateY(-50%);margin:0;font-size:1.25rem;font-weight:750;line-height:1;color:var(--muted);pointer-events:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-number-input-shell>input[value=""]+b{opacity:.45}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel:has(>.lesson-number-field) .lesson-interaction-feedback{animation:v3ep-rise .26s var(--ease) both}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-check-button{justify-self:start;min-height:50px;margin:0;padding:8px 22px;border:0;border-radius:99px;background:var(--ink);color:#fff;box-shadow:none;font-size:.875rem;font-weight:800;white-space:nowrap;cursor:pointer;transition:transform .14s,background .14s,opacity .14s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-check-button:hover:not(:disabled){transform:translateY(-1px);background:#22385c}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-check-button:disabled{opacity:.35;cursor:default}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angle-practice-help{grid-area:help;display:grid;gap:10px;margin:0;padding:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angle-practice-help>button{grid-column:auto;justify-self:start;width:auto;display:inline-flex;align-items:center;gap:8px;min-height:44px;margin:0;padding:8px 16px;border:1.5px solid #cfc5b1;border-radius:99px;background:#fff;color:var(--ink);box-shadow:none;font-size:.84375rem;font-weight:800;cursor:pointer}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angle-practice-help>button:hover{border-color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angle-practice-help>button svg{width:16px;height:16px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-compact-walkthrough{grid-area:work;display:grid;gap:12px;margin:0;padding:16px;border:0;border-radius:20px;background:#fff;box-shadow:var(--soft-shadow),inset 0 0 0 1.5px var(--line);text-align:left;animation:v3ep-rise .32s var(--ease) both .15s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-step-count{order:0;justify-self:start;padding:4px 10px;border-radius:99px;background:var(--amber-soft);color:var(--amber-ink);font-size:.71875rem;font-weight:850;letter-spacing:.4px;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-current-step{display:grid;gap:6px;margin:0;padding:12px 14px;border:0;border-radius:14px;background:#fbf7ee;box-shadow:inset 3px 0 0 var(--amber);text-align:left;animation:v3ep-rise .3s var(--ease) both}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-current-step h3{margin:0;font-size:.96875rem;font-weight:850;text-align:left;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-current-step p{margin:0;font-size:1rem;line-height:1.55;text-align:left;color:#2f3c52}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-step-actions{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;justify-content:flex-start}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-step-actions>button{display:inline-flex;align-items:center;justify-content:center;gap:8px;flex:1 1 0;width:auto;min-height:44px;margin:0;padding:8px 18px;border-radius:99px;font-size:.875rem;font-weight:800;cursor:pointer;transform:none;transition:transform .14s,background .14s,border-color .14s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-step-actions>button.angle-walkthrough-next{order:2;border:0;background:var(--ink);color:#fff;box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-step-actions>button.angle-walkthrough-next:hover{transform:translateY(-1px);background:#22385c}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-step-actions>button.v3a-step-previous{order:1;border:1.5px solid #cfc5b1;background:#fff;color:var(--ink);box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-step-actions>button.v3a-step-previous:hover:not(:disabled){border-color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-step-actions>button:disabled{opacity:.4;cursor:default}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-step-actions>button svg{width:16px;height:16px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-diagram figcaption{order:2}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-card{grid-area:work;display:grid;gap:12px;margin:0;padding:16px;border:0;border-radius:20px;background:#fff;box-shadow:var(--soft-shadow),inset 0 0 0 1.5px var(--line);text-align:left;animation:v3ep-rise .32s var(--ease) both .15s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-reading :is(.notebook-angle-notes,p){margin:0;padding:0;border:0;background:none;font-size:.9375rem;line-height:1.55;text-align:left;color:#2f3c52}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-reading .notebook-angle-notes{display:grid;gap:6px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab{display:grid;gap:10px;margin:0;padding:0;border:0;background:none;box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-readout{display:grid;gap:4px;margin:0;padding:12px 14px;border:0;border-radius:14px;background:#f6f1e4;box-shadow:none;text-align:center}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-readout p{margin:0;font-size:1.1875rem;font-weight:750;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab>label{margin:0;font-size:.875rem;font-weight:800;text-align:left;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab input[type=range]{width:100%;margin:0;accent-color:var(--blue);cursor:pointer}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab-actions{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;justify-content:flex-start}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab-actions>button{display:inline-flex;align-items:center;justify-content:center;gap:7px;flex:0 1 auto;min-height:44px;margin:0;padding:8px 16px;border:1.5px solid #cfc5b1;border-radius:99px;background:#fff;color:var(--ink);box-shadow:none;font-size:.84375rem;font-weight:800;cursor:pointer;transform:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab-actions>button:first-child{border-color:var(--ink);background:var(--ink);color:#fff}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab-actions>button:hover{border-color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab-actions>button[aria-pressed=true]{background:#dfe6fc;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab-actions>button svg{width:15px;height:15px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab-actions>.angles-lab-auto{flex:1 1 100%}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab-actions:has(>.angles-lab-auto)>button:not(.angles-lab-auto){flex:1 1 0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab-demo-status{display:grid;margin:0;font-size:.8125rem;line-height:1.5;text-align:left;color:var(--muted)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab-demo-status>span{grid-area:1 / 1}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angles-lab-demo-status>[hidden]{display:block;visibility:hidden;pointer-events:none;-webkit-user-select:none;user-select:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-card.is-demo,#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-card.is-demo .angles-lab{gap:12px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-try{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:10px 14px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-try>.angles-lab-actions{grid-column:1 / -1}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-try>.angles-lab-actions>button{flex:1 1 0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-try>.angles-lab-actions>button:first-child{border-color:#cfc5b1;background:#fff;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-try>.angles-lab-actions>button:first-child:hover{border-color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo{display:grid;gap:8px;margin:0;padding:12px 14px 14px;border-radius:16px;background:#eef2fc}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:0;padding:0;list-style:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps li{display:grid;gap:6px;min-width:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps span{display:flex;align-items:center;gap:7px;font-size:.8125rem;font-weight:800;color:#6b7891;transition:color .2s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps b{display:grid;place-items:center;flex:none;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:inset 0 0 0 1.5px #c7d1ee;color:#6b7891;font-size:.6875rem;font-weight:900;transition:background .2s,color .2s,box-shadow .2s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps i{display:block;height:5px;overflow:hidden;border-radius:99px;background:#d6ddf3}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps em{display:block;width:0;height:100%;border-radius:inherit;background:var(--blue)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps li.is-now span{color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps li.is-now b{background:var(--blue);box-shadow:none;color:#fff}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps li.is-now em{animation:v3a-demo-fill var(--v3a-demo-time) linear forwards;animation-play-state:paused}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo[data-playing] .v3a-lab-demo-steps li.is-now em{animation-play-state:running}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps li.is-done span{color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps li.is-done b{background:#2f7d6d;box-shadow:none;color:#fff}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo-steps li.is-done em{width:100%;background:#2f7d6d}@keyframes v3a-demo-fill{to{width:100%}}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo .angles-lab-demo-status{font-size:.875rem;font-weight:650;line-height:1.4;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo[data-phase=ready] .angles-lab-demo-status{color:#4c5970}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo .angles-lab-actions>.angles-lab-auto{flex:1 1 100%;border-color:var(--ink);background:var(--ink);color:#fff}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-demo .angles-lab-actions>.angles-lab-auto[aria-pressed=true]{background:#fff;color:var(--ink)}#root .v3ep .v3ep-angle:has(.v3a-lab-demo[data-phase=sweep]) .v3a-lab-diagram .angles-point-label{opacity:0}#root .v3ep .v3ep-angle .v3a-lab-diagram .angles-point-label{transition:opacity .22s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-readout.is-pairs[data-demo=steady] p{box-shadow:inset 0 0 0 2px #2f7d6d8c;transition:box-shadow .2s}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angle-practice-help>div:not([hidden]){grid-column:1 / -1;grid-row:auto;display:block;width:auto;min-height:0;margin:0;padding:0;border:0;background:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angle-practice-help :is(.notebook-angle-teaching,.v3a-guided-panel,.v3a-worked-examples,.v3a-worked-example){display:block;width:auto;height:auto;margin:0;padding:0;border:0;background:none;box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angle-practice-help .v3a-compact-walkthrough{grid-area:auto;width:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angle-practice-help .v3a-guided-intro{display:grid;gap:4px;margin:0;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angle-practice-help .v3a-guided-intro h3{margin:0;font-size:1rem;font-weight:850;text-align:left;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angle-practice-help .v3a-guided-intro p{margin:0;font-size:.90625rem;line-height:1.5;text-align:left;color:#39465c}@media(min-width:981px)and (max-width:1180px){#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel>.lesson-check-button{grid-row:3;grid-column:1 / -1}}@media(max-width:980px){#root .v3ep .v3ep-page:has(>[data-v3-maths-presentation=episode]){height:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]{grid-template-columns:minmax(0,1fr);grid-template-rows:none;grid-template-areas:"kicker" "head" "intro" "board" "work" "help" "keep";grid-auto-rows:auto;align-content:start;height:auto;min-height:0;max-width:680px;row-gap:14px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.v3a-diagram-area:not(:has(.v3a-lab-layout)),.v3a-lab-diagram){position:static;align-self:stretch;min-height:0;height:clamp(260px,62vw,420px);max-height:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].is-recap :is(.v3a-diagram-area:not(:has(.v3a-lab-layout)),.v3a-lab-diagram){height:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-card.is-demo .v3a-lab-demo{order:1}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-lab-card.is-demo .v3a-lab-try{order:2}}@media(min-width:681px)and (max-width:980px){#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-angle-lesson][data-v3-blueprint-lesson] .is-crossing-lab .v3a-lab-diagram{height:clamp(220px,36dvh,330px)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-angle-lesson][data-v3-blueprint-lesson] .v3a-lab-card.is-demo .angles-lab{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-angle-lesson][data-v3-blueprint-lesson] .v3a-lab-card.is-demo .v3a-lab-readout{grid-column:1 / -1}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-angle-lesson][data-v3-blueprint-lesson] .v3a-lab-card.is-demo .v3a-lab-try{grid-column:1;order:1}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-angle-lesson][data-v3-blueprint-lesson] .v3a-lab-card.is-demo .v3a-lab-demo{grid-column:2;order:2}}@media(max-width:680px){#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]{row-gap:10px;padding:14px 16px 24px;font-size:.9375rem}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3m-card-head h2{font-size:1.375rem;line-height:1.18;letter-spacing:-.4px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-intro p{font-size:.96875rem}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.v3a-diagram-area:not(:has(.v3a-lab-layout)),.v3a-lab-diagram){height:clamp(220px,min(76vw,40dvh),330px);padding:8px 8px 10px;border-radius:18px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.v3a-diagram-area:not(:has(.v3a-lab-layout)),.v3a-lab-diagram) figcaption{font-size:.8125rem}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.v3a-answer-panel,.v3a-compact-walkthrough,.v3a-lab-card){padding:14px;border-radius:18px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-choice-grid>button{min-height:52px;padding:10px 14px;font-size:.96875rem}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel:has(>.lesson-number-field){grid-template-columns:minmax(0,1fr)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel>.lesson-check-button{grid-row:3;grid-column:1 / -1;justify-self:stretch;width:100%}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel .lesson-number-input-shell{flex:1;width:auto;max-width:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.v3a-step-actions,.angles-lab-actions)>button{flex:1 1 0;min-height:48px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .angle-practice-help>button{justify-self:stretch;justify-content:center;width:100%;min-height:48px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .notebook-reminder{transform:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].is-try .v3a-diagram-area:not(:has(.v3a-lab-layout)){height:clamp(200px,min(58vw,34dvh),260px)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3a-answer-panel>h3{font-size:1.03125rem}}@media(max-width:980px){#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] :is(.v3a-lab-diagram:has(>:is(.v3area-board,.v3pyapp-board,.v3special-board,.v3reason-board)),.v3a-diagram-area:has(.angles-figure>:is(.v3area-board,.v3pyapp-board,.v3special-board,.v3reason-board))){height:auto;min-height:0}}.v3ep-angle .angles-diagram .angles-ray line{stroke-dasharray:1200;stroke-dashoffset:1200;animation:v3ep-draw .62s var(--ease) forwards 80ms}.v3ep-angle .angles-diagram .angles-ray:nth-of-type(2) line{animation-delay:.18s}.v3ep-angle .angles-diagram .angles-ray:nth-of-type(3) line{animation-delay:.28s}.v3ep-angle .angles-diagram .angles-ray:nth-of-type(4) line{animation-delay:.38s}.v3ep-angle .angles-diagram .angles-ray path{animation:v3ep-fade .26s var(--ease) both .56s}.v3ep-angle .angles-diagram .angles-sector{transform-box:fill-box;transform-origin:center;animation:v3ep-angle-open .52s var(--spring) both .52s}.v3ep-angle .angles-diagram .angles-sector.tone-1{animation-delay:.64s}.v3ep-angle .angles-diagram .angles-sector.tone-2{animation-delay:.76s}.v3ep-angle .angles-diagram .angles-sector.tone-3{animation-delay:.88s}.v3ep-angle .angles-diagram .angles-origin{transform-box:fill-box;transform-origin:center;animation:v3ep-angle-dot .36s var(--spring) both .42s}.v3ep-angle .angles-diagram :is(.angles-label,.angles-point-label){animation:v3ep-angle-label .38s var(--ease) both .9s}.v3ep-angle .angles-diagram .angles-label.tone-1{animation-delay:1s}.v3ep-angle .angles-diagram .angles-label.tone-2{animation-delay:1.1s}.v3ep-angle .angles-diagram .angles-label.tone-3{animation-delay:1.2s}.v3ep-angle :is(.v3a-diagram-area,.v3a-lab-diagram) figcaption{animation:v3ep-rise .36s var(--ease) both 1s}@keyframes v3ep-angle-open{0%{opacity:0;scale:.55}}@keyframes v3ep-angle-dot{0%{opacity:0;scale:0}}@keyframes v3ep-angle-label{0%{opacity:0;translate:0 4px}}.v3ep-angle .v3a-current-step{animation:v3ep-rise .28s var(--ease) both}.v3ep-angle .v3a-step-count{animation:v3ep-pop .3s var(--spring) both}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3t-step-heading{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3t-step-heading>strong{color:var(--ink);font-size:.875rem;line-height:1.5}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3t-step-heading>.v3a-step-count{font-size:.71875rem;line-height:1.5}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3t-known{display:grid;gap:8px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3t-known>strong{font-size:.875rem;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3t-known>div{justify-content:flex-start}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson] .v3t-known-chip{padding:0;border-color:transparent;background:transparent;color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3b-model-column{display:contents}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-work-column{grid-area:work;display:grid;grid-template-columns:minmax(0,1fr);gap:10px;min-width:0;align-self:start}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-work-column:empty{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-work-column>:is(.v3a-work-card,.v3t-practice-panels,.angle-practice-help){grid-area:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-work-column>.v3t-practice-help{grid-template-columns:minmax(0,1fr);min-width:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-practice-help>button{grid-row:auto;max-width:100%;min-width:0;white-space:normal}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-practice-panels{display:block;min-width:0}@media(min-width:981px){#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t:not(.is-recap):has(.v3a-diagram-area):not(:has(.v3t-reminder)){grid-template-rows:minmax(0,1fr) auto auto auto auto minmax(0,1fr);grid-template-areas:"board ." "board kicker" "board head" "board intro" "board work" "board ."}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t:not(.is-recap):has(.v3a-diagram-area):not(:has(.v3t-work-column:not(:empty))):not(:has(.v3t-reminder)){grid-template-rows:minmax(0,1fr) auto auto auto minmax(0,1fr);grid-template-areas:"board ." "board kicker" "board head" "board intro" "board ."}}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3a-answer-panel{padding:16px;gap:10px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3a-diagram-area{height:auto;min-height:0;max-height:none;overflow:visible;flex:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3a-diagram-area>*{width:100%;min-width:0;max-width:100%}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3m-board{height:auto;min-height:0;margin:0;padding:0;border:0;border-radius:0;background:none;box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3m-board-body{display:grid;flex:none;min-height:0;height:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3m-board-head{margin:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3m-board-note{margin-bottom:0;font-size:.875rem}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t :is(.v3p-model,.v3py-model){height:auto;min-height:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t :is(.v3p-diagram,.v3py-diagram){flex:none;width:100%;height:clamp(260px,calc(100dvh - 360px),420px);min-height:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-comparison :is(.v3p-diagram,.v3py-diagram){height:260px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-reminder{grid-area:keep;margin:0;padding:0;align-self:start}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3a-static-notes{padding:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-exploration>p{margin:0;font-size:.9375rem;line-height:1.55;color:#2f3c52;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-layout :is(p,label,legend,figcaption,button,input,li,dt,dd){font-size:1rem;line-height:1.5}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3a-intro p{font-size:.96875rem;line-height:1.55}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-current-step h3{font-size:.96875rem;line-height:1.5}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-current-step p{font-size:1rem;line-height:1.55}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-current-step>.igo-math-display{font-size:1.5rem}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-formula-natural{font-size:inherit}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-view-controls{justify-content:flex-start}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-response-form{display:grid;grid-template-columns:minmax(0,1fr);gap:10px;min-width:0;margin:0;padding:0;border:0;background:none;box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-answer{grid-column:1 / -1;display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;justify-items:stretch;gap:12px;min-width:0;max-width:none;width:100%}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-answer>label{margin:0;font-size:.9375rem;font-weight:800;line-height:1.5;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3t-answer>.v3t-algebra-entry-tools{grid-column:1 / -1}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .lesson-number-unit{position:absolute;inset-inline-end:16px;top:50%;transform:translateY(-50%);padding:0;font-size:1.25rem;font-weight:750;line-height:1;color:var(--muted)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .lesson-number-input-shell{display:block;background:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .v3a-answer-panel .lesson-number-input-shell>input{font-size:1.25rem;font-weight:750;line-height:1.5}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .lesson-number-input-shell:has(>.lesson-number-unit){display:grid;grid-template-columns:minmax(3ch,1fr) max-content;align-items:center;width:100%;min-width:0;gap:4px;border-radius:14px;background:#fff;box-shadow:inset 0 0 0 1.5px #d8cdb7}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .lesson-number-input-shell:has(>.lesson-number-unit):focus-within{box-shadow:inset 0 0 0 2px var(--blue),0 0 0 4px #dfe6fc}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson].v3t .lesson-number-input-shell:has(>.lesson-number-unit)>input{min-width:0;padding-inline:16px 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.v3early-maths-spoken-answer>.v3early-maths-voice-message{margin-inline:auto;text-align:center}#root .lin.lv3.v3m dialog.v3solution-dialog{position:fixed;top:0;right:0;bottom:0;left:0;width:100vw;height:100dvh;max-width:none;max-height:none;margin:0;padding:24px;border:0;background:transparent;color:#172842;overflow:hidden;overscroll-behavior:contain;font-family:var(--notebook-font,"Avenir Next",system-ui,sans-serif)}#root .lin.lv3.v3m dialog.v3solution-dialog[open]{display:grid;place-items:center}#root .lin.lv3.v3m dialog.v3solution-dialog::backdrop{background:#0c1e3785;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);transition:background .22s ease,backdrop-filter .22s ease}#root .lin.lv3.v3m dialog.v3solution-dialog:is([data-phase=closed],[data-phase=entering],[data-phase=closing])::backdrop{background:#0c1e3700;-webkit-backdrop-filter:blur(0);backdrop-filter:blur(0)}#root .lin.lv3.v3m .v3solution-paper{display:flex;flex-direction:column;gap:14px;width:min(1080px,100%);max-height:100%;min-height:0;padding:24px;border:2px solid #172842;border-radius:28px;background:#fffdf7;box-shadow:5px 7px #172842,0 24px 70px #091e4140;opacity:1;transform:none;transition:opacity .22s ease,transform .22s cubic-bezier(.22,.7,.2,1);overflow:hidden}#root .lin.lv3.v3m .v3solution-dialog:is([data-phase=closed],[data-phase=entering],[data-phase=closing]) .v3solution-paper{opacity:0;transform:translateY(14px) scale(.985)}#root .lin.lv3.v3m .v3solution-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}#root .lin.lv3.v3m .v3solution-header span{font-size:.75rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:#257b70}#root .lin.lv3.v3m .v3solution-header h2{margin:4px 0 0;font:800 clamp(1.4rem,2.2vw,2rem)/1.15 var(--notebook-font);letter-spacing:-.025em}#root .lin.lv3.v3m 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.lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-shared-structured-notebook] .v3shared-work .v3pro-work p{text-align:left}#root .lin.lv3 .v3pro-controls{display:flex;justify-content:center;flex-wrap:wrap;gap:8px}#root .lin.lv3 .v3pro-controls button{min-height:44px;padding:9px 13px;border:1.5px solid var(--line);border-radius:999px;background:var(--card);color:var(--ink);font:750 .9375rem/1.4 var(--sans);cursor:pointer;transition:background-color .16s ease,border-color .16s ease}#root .lin.lv3 .v3pro-controls button[aria-pressed=true]{background:#dfe7ff;border-color:#3559d7;color:#213fa9}#root .lin.lv3 .v3pro-controls button:focus-visible{outline:3px solid #3459eb;outline-offset:3px}@media(prefers-reduced-motion:reduce){#root .lin.lv3 .v3pro-controls button{transition:none}}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] [data-native-kind=g7_roots_notebook_v1] .v3shared-model 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.v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] [data-native-kind=g7_word_problems_notebook_v1] :is(.v3shared-model,.v3shared-work) .word-choices button[aria-pressed=true],#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] [data-native-kind=g7_word_problems_notebook_v1] .v3shared-model .word-discussion button[aria-pressed=true]{background:#172842;color:#fffefa;border-color:#172842;box-shadow:none}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] [data-native-kind=g7_word_problems_notebook_v1] :is(.v3shared-model,.v3shared-work) .word-choices button:focus-visible,#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] [data-native-kind=g7_word_problems_notebook_v1] .v3shared-model :is(.word-discussion 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#cfc5b1;border-radius:99px;background:#fff;color:var(--ink);box-shadow:none;font-size:.875rem;font-weight:800;line-height:1.4;white-space:normal}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-layout,.v3e-layout) button[aria-pressed=true]:where(:not(.lesson-choice-grid button)){background:#dfe6fc;border-color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-layout,.v3e-layout) :is(button,input,select,textarea,summary):focus-visible{outline:3px solid var(--blue);outline-offset:2px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-layout,.v3e-layout) button svg{flex:none;width:18px;height:18px;margin:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-layout,.v3e-layout) .v3a-diagram-area svg.lucide{display:block;flex:none;width:22px;height:22px;min-height:0;max-width:22px;max-height:22px;margin:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-layout,.v3e-layout) button:disabled{cursor:default}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-layout,.v3e-layout) input[type=range]{width:100%;min-width:0;min-height:44px;margin:0;accent-color:var(--blue)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-layout,.v3e-layout) :is(.roots-variants,.coordinates-variants,.word-choices,.roots-step-tabs,.coordinates-step-tabs,.word-step-tabs,.eq-step-track){display:flex;flex-wrap:wrap;gap:8px;width:100%;min-width:0;margin:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-step-tabs,.coordinates-step-tabs,.word-step-tabs,.eq-step-track) button{min-width:44px;min-height:44px;width:auto;padding:8px 12px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-step-tabs,.coordinates-step-tabs,.word-step-tabs,.eq-step-track) button[aria-current=step]{background:var(--ink);color:#fff;border-color:var(--ink)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) button:is(.roots-action,.coordinates-action,.word-action,.eq-primary-action){justify-self:start;width:auto;min-height:44px;margin:0;border:0;border-radius:99px;background:var(--ink);color:#fff;box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) button:is(.roots-action,.coordinates-action,.word-action,.eq-primary-action):hover:not(:disabled){background:#22385c}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-worked,.coordinates-worked,.word-work,.eq-worked-notepaper){display:grid;grid-template-columns:minmax(0,1fr);gap:12px;width:100%;min-width:0;margin:0;padding:0;border:0;border-radius:0;background:none;box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-worked,.coordinates-worked,.word-work)>*{grid-column:auto;grid-row:auto;min-width:0;max-width:100%}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-current,.word-current,.coordinates-worked>[aria-live]){display:grid;gap:6px;margin:0;padding:12px 14px;border:0;border-radius:14px;background:#fbf7ee;box-shadow:inset 3px 0 0 var(--amber)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-current,.word-current,.coordinates-worked>[aria-live]) :is(h3,p){margin:0;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-worked-head,.eq-worked-heading){display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px;margin:0;color:var(--amber-ink);font-size:.8125rem;line-height:1.4;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-history,.word-history){display:flex;flex-wrap:wrap;align-items:center;gap:8px;min-width:0;margin:0;padding:0;border:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-history>div,.word-history>span){min-width:0;max-width:100%;padding:0;border:0;border-radius:0;background:none;color:var(--muted);box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-history>span{font-size:.8125rem;font-weight:800}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) 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.lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-full,.word-full,.coordinates-full) li{margin:12px 0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-help,.word-help,.coordinates-help){grid-area:help}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-help{display:grid;gap:10px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-help>[hidden]{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-help>div:not([hidden]){margin:0;padding:16px;border-radius:20px;background:#fff;box-shadow:var(--soft-shadow),inset 0 0 0 1.5px var(--line)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-help,.word-help,.coordinates-help) .katex-display{margin:8px 0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3ne-reminder{grid-area:keep}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-square-lab{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:none;gap:10px;align-items:center;width:100%;min-width:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-square-lab>*{grid-column:auto;grid-row:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-square{--v3ne-model-width:300px;width:min(100%,300px);margin-inline:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-cube-lab{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;min-width:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-cube-lab>*{grid-column:auto;grid-row:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3n-cube-figure{width:100%;margin:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3n-cube-figure>.roots-cube{--v3ne-model-width:400px;width:min(100%,400px);max-width:100%}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-layer-controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;margin:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-cube-observation,.roots-refine,.roots-notation,.roots-negative){display:grid;gap:12px;min-width:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-number-line{width:100%;min-width:0;margin:0;padding:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-number-line svg{width:100%;height:auto;max-height:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-sum-model{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:14px;align-items:center}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-sum-model>span{display:block}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-sum-model>div{grid-column:1 / -1;margin:0;padding:12px 0 0;border:0;border-top:1px dashed var(--sand)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-sum-model .roots-square{--v3ne-model-width:190px;width:min(100%,190px)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-sign-contrast{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-sign-contrast>p{grid-column:1 / -1}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .coordinates-figure{display:block;width:100%;max-width:480px;margin:0 auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .coordinates-plane{width:100%;height:auto;max-height:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .coordinates-directions{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;margin:8px 0 0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .coordinates-response{display:grid;grid-template-columns:minmax(0,1fr);gap:10px;width:100%;max-width:none;min-width:0;margin:0;padding:0;border:0;border-radius:0;background:none;box-shadow:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .coordinates-response>*{grid-column:auto;grid-row:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .coordinates-response .coordinates-figure{display:block}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .coordinates-response :is(.coordinates-plane,.coordinates-directions,figcaption){grid-column:auto;grid-row:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .coordinates-toggle{display:flex;align-items:center;gap:10px;min-height:44px;margin:8px 0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .coordinates-toggle input{flex:none;width:22px;height:22px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .coordinates-height{display:grid;gap:6px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.word-pair,.word-packs,.coordinates-recap,.roots-recap){min-width:0;gap:14px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .word-packs{grid-template-columns:repeat(3,minmax(0,1fr))}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .word-packs>div{min-width:0;padding:12px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .word-bar-row{margin:12px 0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .word-bar-track{min-height:44px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .word-bar-part{min-height:44px;padding:4px 2px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .word-age-table table{width:100%;font-size:.9375rem}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.word-receipt,.word-model,.word-age-table){min-width:0;max-width:100%}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .word-receipt{padding:14px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .word-receipt>div{gap:8px;padding:12px 4px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-note,.word-note,.coordinates-note){padding:12px 14px;border:0;border-radius:14px;background:#f6f1e4;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-discussion,.word-discussion,.coordinates-discussion){min-width:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-discussion,.word-discussion,.coordinates-discussion) fieldset{min-width:0;margin:0;padding:0;border:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.roots-discussion,.word-discussion,.coordinates-discussion) button{display:flex;width:100%;margin:8px 0;justify-content:flex-start;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-paired-flow,.v3ne-paired-flow>.word-walkthrough,.v3ne-paired-flow .word-work-layout){display:contents}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3ne-paired-flow .word-work-layout>:first-child:not(.word-work){grid-area:board;align-self:start;position:sticky;top:0;display:block;min-width:0;min-height:320px;margin:0;padding:20px;border:0;border-radius:24px;background-color:var(--card);background-image:linear-gradient(#f1e9d7 1px,transparent 1px),linear-gradient(90deg,#f1e9d7 1px,transparent 1px);background-size:24px 24px;box-shadow:0 18px 40px -26px #08235480,inset 0 0 0 1.5px var(--line)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3ne-paired-flow .word-work{grid-area:work;padding:16px;border-radius:20px;background:#fff;box-shadow:var(--soft-shadow),inset 0 0 0 1.5px var(--line)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3ne-paired-flow .word-full{grid-area:help}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3ne-flow-controls{grid-area:help;display:grid;gap:10px;min-width:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3ne-recap{grid-area:board;display:grid;gap:12px;min-width:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]):has(.v3ne-recap),#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]):has(.v3ne-layout[data-native-has-model=false]){grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto auto auto auto auto;grid-template-areas:"kicker" "head" "intro" "board" "work" "keep";width:min(100%,960px)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-recap,.v3ne-work) :is(.roots-teaching-layout,.coordinates-teaching-layout,.word-work-layout){display:grid;grid-template-columns:minmax(0,1fr);gap:12px;margin:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3ne-recap :is(.roots-recap,.coordinates-recap){display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3ne-recap .word-recap{margin:0;padding-left:24px}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3ne-recap .word-recap li{margin:12px 0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3e-layout{display:contents}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3e-layout>.v3a-work{display:contents}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3e-model-column{display:contents}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3e-model-column>.v3a-diagram-area{height:auto;min-height:320px;overflow:visible}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3e-lab-controls{display:grid;gap:12px;margin-top:12px;min-width:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3e-guided-panel{min-width:0}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3e-guided-panel .v3e-worked-card{grid-area:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .v3e-response-column .v3a-answer-panel{grid-area:auto}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson][data-v3-native-family=equations] .v3e-layout:has(.v3n-inspection.is-open) .v3e-teaching-column>.v3e-worked-card{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson][data-v3-native-family=equations] .v3e-response-column:has(.eq-practice-help>button[aria-expanded=true])>.v3a-answer-panel{display:none}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-layout,.v3e-layout) .katex-display{min-width:0;max-width:100%;margin:8px 0;font-size:1.1em;text-align:left}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-layout,.v3e-layout) .katex-display>.katex{max-width:100%;text-align:left;white-space:normal}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-layout,.v3e-layout) .katex-display>.katex>.katex-html{display:flex;flex-wrap:wrap;align-items:baseline;row-gap:.35em}@media(max-width:980px){#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-model,.v3a-diagram-area,.v3ne-paired-flow .word-work-layout>:first-child:not(.word-work)){position:static;width:100%;height:auto;min-height:0;overflow:visible}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) :is(.v3ne-work,.v3e-teaching-column,.v3e-response-column){width:100%}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .roots-degree-model{grid-template-columns:minmax(0,1fr)}#root .v3ep .lin.lv3.v3m.v3n.v3ep-notebook[data-v3-maths-presentation=episode][data-v3-blueprint-lesson]:is([data-v3-native-family=roots],[data-v3-native-family=words],[data-v3-native-family=coordinates],[data-v3-native-family=equations]) .word-packs{grid-template-columns:minmax(0,1fr)}#root .v3ep 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.lin.lv3.v3n .v3a-lab-card .angles-lab{display:grid;gap:12px;margin:0}#root .lin.lv3.v3n .v3a-lab-reading{display:grid;gap:12px}#root .lin.lv3.v3n .v3a-lab-readout{display:grid;gap:8px}#root .lin.lv3.v3n .v3a-lab-readout.is-pairs{grid-template-columns:repeat(2,minmax(0,1fr))}#root .lin.lv3.v3n .v3a-lab-readout p{margin:0;padding:8px;border-radius:10px;background:#d7eeea;color:#206458;text-align:center}#root .lin.lv3.v3n .v3a-lab-readout.is-pairs p:first-child{background:#f5ddd0;color:#a3402d}#root .lin.lv3.v3n .v3a-layout .angles-lab input[type=range]{margin:0}#root .lin.lv3.v3n .v3a-layout .angles-lab-actions{gap:8px}#root .lin.lv3.v3n .v3a-layout .angles-lab-actions button{min-height:40px;padding:7px 10px;font-size:13px}#root .lin.lv3.v3n .v3a-layout .angles-lab-actions .v3a-lab-reset{box-shadow:none;font-weight:400}#root .lin.lv3.v3n .v3a-layout .angles-recap-diagrams{height:100%;min-height:0;gap:16px;grid-template-rows:minmax(0,1fr);align-items:stretch}#root .lin.lv3.v3n 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.eq-step-track.v3b-labelled-steps button[aria-current=step]{border-color:var(--v3-blue);background:#e6edff;color:#1f3fae}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-step-track.v3b-labelled-steps button[aria-current=step] b{background:var(--v3-blue);color:#fff}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-step-track.v3b-labelled-steps button:not([aria-current]):hover{border-color:#7e94c6;background:#f0f4ff}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-step-track.v3b-labelled-steps button span{text-wrap:balance}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-primary-action{justify-self:center;width:auto;margin:0}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .v3e-lab-controls>div[role=group]{display:flex;justify-content:center;flex-wrap:wrap;gap:8px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout :is(.eq-candidate,.eq-solution-experiment) input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;min-height:44px;height:44px;margin:0;padding:0;border:0;border-radius:0;background:transparent;cursor:pointer;accent-color:var(--v3-blue)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout :is(.eq-candidate,.eq-solution-experiment) input[type=range]::-webkit-slider-runnable-track{height:8px;border:1px solid #b1bdd5;border-radius:99px;background:#dbe4f8}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout :is(.eq-candidate,.eq-solution-experiment) input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:28px;height:28px;margin-top:-11px;border:2px solid var(--ink);border-radius:50%;background:#fffdf7;box-shadow:none}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout :is(.eq-candidate,.eq-solution-experiment) input[type=range]::-moz-range-track{height:6px;border:1px solid #b1bdd5;border-radius:99px;background:#dbe4f8}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout :is(.eq-candidate,.eq-solution-experiment) input[type=range]::-moz-range-thumb{width:24px;height:24px;border:2px solid var(--ink);border-radius:50%;background:#fffdf7;box-shadow:none}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-anatomy>div{font-size:24px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-anatomy>div:not([role=group])>.igo-math-text{display:grid;place-items:center;justify-self:center;min-width:76px;min-height:52px;padding:8px 14px;border:1px solid #b5c4e8;border-radius:10px;background:#e6edff;color:#1f3fae}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-anatomy>div:not([role=group])>p{display:grid;place-items:center;min-height:6em}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .v3e-lab-controls button{border:1px solid #c6cdd7;border-radius:10px;background:#fffdf7;color:var(--ink);box-shadow:none;font-weight:500}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .v3e-lab-controls button[aria-pressed=true]{border-color:var(--v3-blue);background:#d2ddfb;color:#1f3fae}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-operation-path{grid-template-columns:minmax(0,1fr) 68px minmax(0,1fr);font-size:24px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-path-operation{font-size:var(--v3-angle-copy-size);gap:4px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-reverse-path{gap:12px;padding-top:12px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-reverse-path{min-height:132px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-reverse-path>div{justify-content:center;align-content:center;min-height:68px;font-size:24px;gap:10px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-operation-path>.igo-math-text,#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-reverse-path>div>.igo-math-text{display:grid;place-items:center;min-width:64px;min-height:48px;padding:6px 10px;border:1px solid #dfd2b5;border-radius:10px;background:#fffdf7}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-reverse-path>div>.igo-math-text:not(:first-child){border-color:#bdd8d0;background:#edf6f2;color:#185e54}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-cancel-model{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-cancel-model>p{grid-column:1/-1}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-cancel-model section>div{justify-content:center}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-cancel-model small{font-size:var(--v3-angle-copy-size)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout :is(.eq-factor,.eq-fraction-whole){font-size:24px;gap:8px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-distribution-branches>div{gap:8px;min-width:0;font-size:24px;padding:12px 8px;border:1px solid #dfd2b5;border-radius:12px;background:#fffdf7}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-distribution-branches>div>span:last-child{display:grid;place-items:center;min-height:48px;width:100%;font-size:var(--v3-angle-copy-size)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-fraction-parts>div{padding:12px 8px;gap:8px;border-radius:10px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-fraction-parts strong{font-size:24px;font-weight:400}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-fraction-model>p{min-height:72px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .model-groups>p{min-height:48px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-scaling-branches>section{gap:8px;min-width:0;font-size:24px;padding:12px 8px;border:1px solid #dfd2b5;border-radius:12px;background:#fffdf7}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-scaling-branches small{display:grid;place-items:center;min-height:48px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-scaling-branches>section>div{display:grid;place-items:center;min-height:42px;width:100%;font-size:24px;border-radius:8px;background:#edf6f2}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-evaluations{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;font-size:24px;gap:10px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-candidate .eq-evaluations{grid-template-columns:repeat(2,minmax(0,1fr))}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-evaluations>div,#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-candidate .eq-evaluations>span{display:grid;justify-items:center;align-content:center;min-width:0;min-height:76px;padding:8px;border:1px solid #dfd2b5;border-radius:10px;background:#fffdf7}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-evaluations strong{font-size:24px;font-weight:400}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout :is(.eq-candidate,.eq-solution-experiment)>p[role=status]{display:grid;place-items:center;min-height:72px;padding:8px 10px;border:1px solid #dfd2b5;border-radius:10px;background:#f8f3e8}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-signed-model svg{max-height:190px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout :is(.eq-original-equation>small,.eq-both-sides>strong,.eq-path-operation,.eq-scaling-branches .eq-multiplier-control,.eq-outcome-symbol){color:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout :is(.eq-distribution-branches>div>span:last-child,.eq-scaling-branches>section>div){color:#185e54}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-cancel-model section>div>span{position:relative;align-content:start;min-width:60px;min-height:84px;padding:8px 8px 32px;border:1.5px solid var(--ink);border-radius:10px;background:#d7eeea;color:var(--ink);opacity:1}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-cancel-model section>div>span>small{position:absolute;bottom:5px;left:0;width:100%}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-cancel-model section>div>span:after{content:"";position:absolute;inset:25px 5px auto;height:2px;background:var(--ink);transform:rotate(-25deg) scaleX(0);transform-origin:left center}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-cancel-model .is-cancelled{background:#ecf1ec}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-cancel-model .is-cancelled>.igo-math-text{opacity:.6}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-cancel-model .is-cancelled:after{transform:rotate(-25deg) scaleX(1)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout :is(.eq-fraction-whole,.eq-original-proof,.eq-reverse-path){border-color:#dfd2b5}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-scaling-branches>section:last-child{border-color:#b5c4e8;border-left-width:1px;padding-left:8px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-anatomy button[aria-pressed=true]{background:#d2ddfb;border-color:var(--ink);color:#1f3fae;box-shadow:none}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-fraction-parts>div{border:1.5px solid var(--ink);background:#d7eeea;color:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-fraction-parts .is-awaiting{background:#fffaf0;border-style:dashed;color:var(--body)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-group-outline rect{fill:#d7eeea;stroke:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-group-outline text{fill:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-group-token{fill:#fdba74;stroke:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .equation-balance :is(.equation-beam,.equation-pouch-tie){stroke:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .equation-balance .equation-stand{fill:#d2ddfb;stroke:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .equation-balance .equation-pan{fill:#fbf1d3;stroke:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .equation-balance .equation-pouch{fill:#d7eeea;stroke:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .equation-balance .equation-unit{fill:#fdba74;stroke:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .equation-balance :is(text,.equation-pivot,.equation-unit-label){fill:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .equation-balance text{font-size:24px;font-weight:600}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .equation-balance .equation-unit-label{font-size:14px;font-weight:500}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .equation-moving-beam{transition:none;transform-origin:0 0;transform-box:view-box}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-signed-model svg :is(line,text){stroke:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-signed-model svg text{stroke:none;fill:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-signed-model svg circle{fill:var(--v3-blue)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-signed-model svg>g:nth-of-type(7) text{font-weight:700}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-signed-model svg>g:nth-of-type(7) line{stroke-width:3}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-signed-model svg circle{stroke:#fffdf7;stroke-width:3}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .eq-deliberate-error{padding:10px 12px;border:1.5px solid var(--ink);border-radius:12px;background:#ffedd5;color:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .v3e-model-focus{color:var(--body);border-top:1px dashed #dfd2b5;padding-top:12px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout.is-practice .v3a-work>:is(.lesson-interaction-keyboard-boundary,.lesson-interaction){display:contents}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-teaching-column{display:flex;flex-direction:column;gap:14px;min-width:0;width:100%}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-teaching-column>.v3a-work-card{width:100%}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .v3e-teaching-column .v3n-inspection{display:flex;flex-direction:column-reverse;gap:14px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-teaching-column .v3n-inspection>div[hidden]{display:none}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-response-column{display:flex;flex-direction:column;gap:14px;min-width:0;width:100%}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-response-column>.v3a-answer-panel{order:1;width:100%}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-response-column>.eq-practice-help{display:contents}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-response-column .eq-practice-help>button{order:2;align-self:stretch;justify-content:center;width:100%;min-height:44px;margin:0;padding:6px 10px;text-align:center}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-help-label{display:grid;min-width:0}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-help-label>span{grid-area:1/1;align-self:center}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-help-measure{visibility:hidden}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-response-column .eq-practice-help>div[hidden]{display:none}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-response-column .eq-practice-help>div:not([hidden]){order:1;display:block;min-width:0;padding:0;border:0}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-response-column:has(.eq-practice-help>button[aria-expanded=true])>.v3a-answer-panel{display:none}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout:has(.eq-practice-help>button[aria-expanded=true])>.v3a-intro{display:flex}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .v3e-guided-panel .eq-intro h2{font-size:var(--v3-angle-copy-size);line-height:var(--v3-angle-copy-leading);margin:0 0 8px}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .v3e-guided-panel .eq-intro p{margin:0}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .lesson-interaction>.v3a-response-layout{grid-column:auto}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .lesson-choice-grid{width:100%}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .lesson-choice-grid button{text-align:center}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .lesson-choice-grid button.wrong-answer{background:#ffedd5;color:var(--ink)}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .v3a-answer-panel>h3{text-align:center;text-wrap:balance}#root .lin.lv3.v3n[data-v3-equation-lesson] .v3e-layout .v3a-answer-panel .lesson-number-field{align-self:center;display:grid;justify-items:center;gap:8px;width:100%;max-width:240px}#root 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.lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-shared-structured-notebook] .v3shared-work .v3m-numeric-response.has-early-voice>.v3early-maths-spoken-answer>.v3early-maths-voice-message{grid-column:1 / -1;order:2;width:100%;max-width:none;margin:0;text-align:center;font-size:.8125rem}#root .v3ep.is-shared-notebook.is-early-maths .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-shared-structured-notebook] .v3shared-work .v3m-numeric-response.has-early-voice>:is(.lesson-interaction-feedback,.v3t-response-instruction){grid-column:1 / -1;width:100%;order:3}@media(max-width:680px){#root .v3ep.is-shared-notebook.is-early-maths .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-shared-structured-notebook] .v3shared-work .v3m-numeric-response.has-early-voice{grid-template-columns:max-content max-content}#root .v3ep.is-shared-notebook.is-early-maths .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-shared-structured-notebook] .v3shared-work 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.v3al-term-choice.is-assigned:not([aria-pressed=true]):not(.is-right):not(.is-considered){background:#f6e4ac}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3al-term-choice>.igo-math-text,#root .lin.lv3.v3t[data-v3-maths-template-set] .v3al-opposite-options .igo-math-rendered,#root .lin.lv3.v3t[data-v3-maths-template-set] .v3al-group-target>.igo-math-text{font-size:23px}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3al-assignment-label{font-size:16px;line-height:1.5;text-align:center}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3al-selected-term{text-align:center;min-height:48px}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3al-group-targets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3al-group-target:disabled{cursor:default;opacity:.65}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3al-group-members{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:4px 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form>.lesson-check-button{justify-self:start}.v3pg-writing>strong{font-size:16px;line-height:1.4;color:#192d47}.v3pg-tools{display:flex;flex-wrap:wrap;gap:8px}.v3pg-tools button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:8px 12px}.v3pg-tools button:disabled{opacity:.55;cursor:default}.v3pg-tools button .igo-math-text{font-size:18px}.v3pg-work details{font-size:16px;line-height:1.5;color:#526681}.v3pg-work details p{margin:8px 0 0}.v3pg-work summary{cursor:pointer}.v3pg-preview{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;padding:8px 12px;border:1px solid #c7d5f0;border-radius:10px;background:#edf1ff;color:#192d47}.v3pg-preview>span{font-size:16px}.v3pg-preview .igo-math-text{font-size:19px}.v3pg-help-controls{display:flex;flex-wrap:wrap;gap:10px;min-width:0}.v3pg-help-controls>button{min-height:44px;white-space:normal}@media(min-width:981px)and (max-height:720px){.v3pg-table th,.v3pg-table td{padding:8px 10px}.v3pg-activity,.v3pg-work{gap:10px}.v3pg-guidance{line-height:1.4}.v3pg-work form,.v3pg-writing{gap:8px}}@media(max-width:680px){.v3pg-table th,.v3pg-table td{padding:9px 6px}.v3pg-table th:first-child{width:40px}.v3pg-table td>input{padding:8px 4px}.v3pg-cell-feedback{font-size:14px}.v3pg-table td>label{font-size:16px}.v3pg-activity{gap:12px}}@media(forced-colors:active){.v3pg-table td>input:focus{outline:3px solid Highlight}.v3pg-table td.is-active{outline:2px solid Highlight}.v3pg-table td>input[aria-invalid=true]{outline:2px dashed CanvasText}}.v3pg-writing-toggle{justify-self:start;min-height:44px;text-align:left}.v3pg-writing-instruction{margin:8px 0 0;font-size:16px;line-height:1.4;color:#526681}.v3pg-writing [hidden]{display:none!important}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3shared-model:has(.v3pg-activity)>.v3m-board{padding:0}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3shared-model:has(.v3pg-activity) .v3m-board-body{padding:0;gap:0}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3pg-cell-heading{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:2px 8px;margin-bottom:6px}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3pg-cell-heading label{font-size:16px;font-weight:700;line-height:1.4}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3pg-cell-feedback{margin:0;font-size:14px;line-height:1.4}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3pg-guidance{font-size:16px;line-height:1.4}#root .v3ep.is-shared-notebook 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.v3pg-preview{grid-column:2;margin:0;min-height:44px;padding:6px 8px}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3pg-writing:has(>div:not([hidden]))+.v3pg-preview{grid-column:1/-1}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3pg-response>div:has(>.v3m-feedback),#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3pg-response>.lesson-check-button{grid-column:1/-1}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3pg-work .v3m-feedback{padding:8px 10px}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3pg-work .v3m-feedback p{margin:3px 0 0}@media(max-width:680px){#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3pg-response{grid-template-columns:1fr}.v3pg-preview{grid-column:1!important}}@media(min-width:981px)and (max-height:740px){#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3shared-model:has(.v3pg-activity){padding-block:6px}}.v3ga-activity-board{display:grid;gap:14px;width:100%;min-width:0}.v3ga-activity{display:grid;gap:10px;min-width:0;width:100%;text-align:left}.v3ga-activity :is(p,ul){margin:0;font-size:1rem;line-height:1.5}.v3ga-activity>button{min-height:44px;justify-self:center;max-width:100%}.v3ga-selection{color:var(--ink,#172b45)}.v3ga-reasoning>label{font-weight:700}.v3ga-reasoning>textarea{box-sizing:border-box;width:100%;min-height:130px;padding:12px;border:1.5px solid 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.lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-model>.v3m-board-body{padding-block:2px}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-model .v3ga-parallel-drawing{max-width:360px;margin-inline:auto}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-model .v3ga-geometry-scene{width:min(100%,calc(240px * var(--v3ga-activity-ratio,1)))}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-model .v3ga-parallel .v3ga-geometry-scene{width:min(100%,calc(clamp(220px,100dvh - 360px,300px) * var(--v3ga-activity-ratio,1)))}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-model .v3ga-parallel-math-label{font-size:3rem}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-model .v3ga-parallel-point text{font-size:calc(1.5rem * var(--v3ga-point-scale,1))}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-model .v3co-drawing{max-width:320px}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-model .v3co-model .v3ga-geometry-scene{width:min(100%,calc(200px * var(--v3ga-activity-ratio,1)))}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-model .v3co-label-content{font-size:2.5rem}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-model .v3co-model .v3ga-math-overlay-label{transform:translate(-50%,-50%) 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li{line-height:1.5}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3shared-work>.v3ga-work{padding:6px 14px}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-work .v3ga-activity{gap:6px}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-work :is(p,label,li){font-size:1rem;line-height:1.5}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-work .v3ga-feedback{margin:0;padding:4px 8px}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-work .v3ga-feedback>span:last-child{display:block}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-work .v3ga-feedback>span:last-child>:is(strong,p){display:inline}#root .v3ep.is-shared-notebook .lin.lv3.v3m.v3n.v3ep-notebook.v3t[data-v3-blueprint-lesson][data-shared-structured-notebook] .v3ga-work .v3ga-feedback p{margin-left:6px}}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3m-sheet{display:none}#root .lin.lv3.v3m.v3n.v3t[data-v3-maths-template-set] .child-lesson-slide.v3m-card{overflow-y:auto;scrollbar-width:thin;justify-content:safe center}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3t-layout :is(p,label,legend,figcaption,button,input,li,dt,dd){font-size:16px;line-height:1.5}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3t-layout button{min-width:0;max-width:100%;white-space:normal;overflow-wrap:break-word}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3t-layout :is(p,h3,fieldset){margin:0}#root .lin.lv3.v3t[data-v3-maths-template-set] 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.v3m-board-body{display:grid;grid-template-columns:minmax(0,1fr);place-items:center;text-align:center;flex:0 0 auto;height:auto;min-height:min-content;width:100%;padding:0}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3m-board-body>*{min-width:0;max-width:100%}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3m-board-body .katex-display,#root .lin.lv3.v3t[data-v3-maths-template-set] .v3m-board-note{text-align:center}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3m-board-body>.v3m-table{margin-inline:auto;table-layout:auto}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3m-board-body .v3m-table :is(th,td){width:auto;overflow-wrap:anywhere;-webkit-hyphens:auto;hyphens:auto;text-align:center;vertical-align:middle}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3m-board-body .v3m-table thead th{overflow-wrap:normal}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3m-board-body .v3percent-labels{padding-inline:0}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3m-board-body 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.v3t-formula-measure{position:absolute;inset:0 auto auto 0;width:0;height:0;overflow:hidden;visibility:hidden;pointer-events:none}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3t-formula-natural{width:max-content;max-width:none}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3t-formula-measure :is(.igo-math-display,.katex-display>.katex,.katex-html){width:max-content;max-width:none;white-space:nowrap;overflow:visible}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3t-known{display:grid;gap:8px}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3t-known>strong{font-size:16px;font-weight:700;text-align:center}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3t-known>div{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3t-known-chip{padding:5px 10px;border:1px solid #bcd9d2;border-radius:8px;background:#d7eeea}#root .lin.lv3.v3t[data-v3-maths-template-set] .v3t-step-actions>button:enabled:hover{transform:none}#root 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