/* Default reading space. Shared navigation resumes when the pupil leaves the lesson. */
body[data-audience=student].bm-lesson-calm>header,
body[data-audience=student].bm-lesson-calm #design-sidebar,
body[data-audience=student].bm-lesson-calm .bm-mobile-nav,
body[data-audience=student].bm-lesson-calm .design-mobile-nav,
body[data-audience=student].bm-lesson-calm #siffer-feedback-launch{display:none!important}
body[data-audience=student].bm-lesson-calm{padding-left:0!important}
body[data-audience=student].bm-lesson-calm .wrap{margin:0 auto!important;left:auto!important;transform:none!important;padding:20px 24px calc(var(--ef-dock-space,100px) + 28px);width:100%;max-width:900px}
body.bm-lesson-calm .player-col{max-width:780px;width:100%;margin:0 auto;padding-bottom:28px}
body.bm-lesson-calm .calm-top{display:flex!important;align-items:center!important;gap:12px!important;padding:0 0 14px!important;border-bottom:1px solid var(--line);margin:0 0 32px;position:sticky;top:0;background:var(--bg);z-index:30}
.calm-top button,.calm-top a{min-height:44px;font:inherit;font-size:13px;line-height:1.4;cursor:pointer;color:var(--ink)}
.calm-back{flex-shrink:0;border:0;background:none;padding:8px 0;text-decoration:none}
.calm-exit-focus{display:none;background:none;border:1px solid var(--line);border-radius:10px;padding:8px 12px}
body.bm-lesson-calm.bm-focus .calm-exit-focus{display:block;margin-left:auto}
body.bm-lesson-calm.bm-focus .calm-top :is(.calm-lesson-name,.calm-part,.lesson-options){display:none}
body.bm-lesson-calm.bm-focus .lesson-part-label{display:none}
body.bm-lesson-calm.bm-focus .calm-top{border-bottom:0;margin-bottom:20px}
body.bm-lesson-calm.bm-focus .brand-credit{display:none}
.calm-lesson-name{min-width:0;flex:1;color:var(--muted);font-size:13px;text-align:center}
.calm-top .calm-part{white-space:nowrap;padding:8px 4px;color:var(--muted);font-variant-numeric:tabular-nums;text-decoration:none;min-width:52px}
.calm-top .lesson-options>summary{font-size:24px;justify-content:center;min-width:44px;padding:0;border:0;list-style:none}
.calm-top .lesson-options>summary:after{display:none}
.calm-top .lesson-actions{max-width:min(330px,calc(100vw - 40px));width:280px;min-width:0;max-height:70dvh;overflow-y:auto}
.calm-top .lesson-actions button,.calm-top .lesson-actions a{white-space:normal;background:none;border:0;border-radius:8px;padding:10px;text-decoration:none;font-size:13px}
.calm-top .lesson-actions button:hover,.calm-top .lesson-actions a:hover{background:var(--bg2)}
.calm-about summary{min-height:44px;cursor:pointer;font-size:13px;padding:10px}
.calm-about p{font-size:13px!important;line-height:1.6}
.calm-about .curriculum-note{font-size:12px}
body.bm-lesson-calm .slide.player{background:transparent;border:0!important;border-radius:0!important;padding:0 16px;box-shadow:none;margin:0;line-height:1.65;font-size:18px}
.slide.player #calm-part-title{font-family:var(--font-body,system-ui);font-size:32px;line-height:1.2;letter-spacing:-.025em;font-weight:650;margin:8px 0 28px;color:var(--ink)}
body.bm-lesson-calm .lesson-part-label{font-size:11px;letter-spacing:.09em;font-weight:600;color:var(--muted);margin:0}
.lesson-unit{min-width:0;margin:20px 0}
.lesson-unit>p{max-width:65ch}
body.bm-lesson-calm .player-col .rule{background:transparent!important;border:0!important;padding:0!important;gap:0;font-size:18px;font-weight:500;line-height:1.65}
body.bm-lesson-calm .player-col .rule .rico{display:none}
body.bm-lesson-calm .player-col .exrow{background:var(--surface);padding:24px 28px;border:1px solid var(--line);border-radius:16px;margin:20px 0;gap:10px}
body.bm-lesson-calm .player-col .exrow .exmath{font-size:1.35rem;padding:4px 0;text-align:center;background:none!important}
body.bm-lesson-calm .exmath .katex-display,body.bm-lesson-calm .exmath .katex-display>.katex{text-align:left}
body.bm-lesson-calm .player-col .exrow .exnote{border:0;padding:6px 0 0;font-size:16px;line-height:1.6;color:var(--muted)}
body.bm-lesson-calm .player-col .hint{background:none;border:0;border-left:2px solid var(--line);padding:4px 0 4px 16px;font-size:15px;line-height:1.6;color:var(--muted)}
body.bm-lesson-calm .player-col .vfeil{box-shadow:none;border-color:var(--line);font-size:16px;background:var(--surface)}
body.bm-lesson-calm .player-col .tryit{border:1px solid var(--line);background:var(--surface);border-radius:16px;padding:24px;margin:28px 0;font-size:18px}
.try-label{font-size:11px!important;letter-spacing:.09em;color:var(--muted);font-weight:600;margin:0 0 12px!important}
body.bm-lesson-calm .tryit .tq{font-weight:500;line-height:1.6}
body.bm-lesson-calm .tryit .trow{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0 12px}
body.bm-lesson-calm .tryit .trow:has(input[type=hidden]){display:none}
body.bm-lesson-calm .tryit input{background:var(--bg);border:1px solid var(--line);border-radius:12px;width:100%;max-width:100%;min-height:52px;font:inherit;padding:12px 16px}
body.bm-lesson-calm .tryit input:focus{outline:2px solid var(--green);outline-offset:3px}
body.bm-lesson-calm .slide.player .try-inline-check{display:none}
.try-options{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.try-choice{min-height:48px;min-width:52px;padding:10px 18px;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:12px;font:inherit;font-size:16px;cursor:pointer}
.try-choice[aria-pressed=true]{background:var(--green);border-color:var(--green);color:var(--bg)}
.try-choice:focus-visible{outline:2px solid var(--green);outline-offset:3px}
.try-support{display:flex;align-items:flex-start;flex-wrap:wrap;column-gap:20px;row-gap:4px;margin-top:12px;font-size:13px}
.try-support button,.try-support summary{min-height:44px;display:flex;align-items:center;background:none;border:0;color:var(--muted);font:inherit;padding:8px 0;cursor:pointer;text-align:left}
.try-support button:hover,.try-support summary:hover{text-decoration:underline;text-underline-offset:4px}
.tryit .try-support .tsol{display:flex!important}
.try-hint p{font-size:15px;line-height:1.6;max-width:45ch;margin:4px 0 12px}
.try-hint[open]{flex-basis:100%}
.try-reflection{display:grid;gap:10px;margin:18px 0;font-size:13px;color:var(--muted)}
.try-reflection textarea{font:inherit;font-size:16px;line-height:1.6;min-height:110px;width:100%;padding:12px;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:12px;resize:vertical}
.lesson-instructions{padding-left:24px}
.lesson-instructions li{padding:6px 0;line-height:1.6}
.lesson-checkpoint{padding:18px 20px;border:1px solid var(--line);border-radius:14px;background:var(--surface);font-size:16px;line-height:1.6}
.lesson-checkpoint>div{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.lesson-checkpoint .try-skip{min-height:44px;background:none;border:0;color:var(--muted);padding:8px;font:inherit;font-size:13px;cursor:pointer}
body.bm-lesson-calm #v-quiz{max-width:780px;margin:0 auto;padding-bottom:32px}
body.bm-lesson-calm #v-quiz>.ef-learning-path,body.bm-lesson-calm #v-quiz>.qprog{display:none}
body.bm-lesson-calm #v-quiz>.back{min-height:44px;margin:0 0 12px;padding:8px 0;border:0;background:none;color:var(--muted);font-size:14px}
body.bm-lesson-calm #v-quiz .qbox{margin-top:16px!important}
body.bm-lesson-calm #v-quiz>.ef-tools{margin:0 0 16px}
.calm-quiz-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px;min-height:56px}
.calm-quiz-top>span{font-size:13px;color:var(--muted);min-width:0}
.calm-quiz-top>.back{margin:0;min-height:44px;background:none;border:0;font-size:13px;padding:8px 0}
.calm-quiz-top .ef-tools{margin:0}
.calm-quiz-top #verktoykasse-knapp{font-size:12px;min-height:44px;padding:8px 10px}
.calm-quiz-top #verktoykasse-knapp>span:first-child{display:none}
body.bm-lesson-calm.bm-focus .calm-quiz-top>.calm-exit-focus{display:block}
body.bm-lesson-calm.bm-focus .calm-quiz-top>span{display:none}
@media(max-width:600px){.calm-quiz-top{gap:10px;flex-wrap:wrap;margin-bottom:16px}.calm-quiz-top>span{font-size:12px;flex:1}.calm-quiz-top .ef-tools{margin-left:auto}}
.qbox .parbtn{max-width:100%;white-space:normal;overflow-wrap:anywhere;line-height:1.4;padding:10px 14px}
.qbox .parlegend .abc{width:auto;min-width:28px;height:auto;min-height:28px;padding:4px}
.tryit .tfb{font-size:16px;margin:12px 0;line-height:1.6}
.tryit .tfb:not(:empty){display:block!important;animation:none!important}
.tryit.open .ta{animation:none!important}
.tryit:is([data-outcome=correct],[data-outcome=assisted]) .try-support :is(.tsol,.try-skip){display:none!important}
.tryit[data-outcome=solution] .tfb{color:var(--muted)}
.tryit .ta{font-size:16px;line-height:1.7;margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
.tryit:not(.open) .ta{display:none}
body.bm-lesson-calm .player-col .stepbar{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;position:fixed;left:var(--ef-dock-left,50%);bottom:calc(12px + env(safe-area-inset-bottom));width:var(--ef-dock-width,min(780px,calc(100% - 48px)));max-width:780px;z-index:39;padding:12px 16px;min-height:76px;border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:0 4px 28px #0000000a;margin:0;transform:none}
body.bm-lesson-calm .stepbar .btn{min-height:48px!important;font-size:14px;padding:12px 18px;border-radius:12px}
body.bm-lesson-calm .stepbar #nextstep{justify-self:end;margin:0;white-space:normal;max-width:100%}
body.bm-lesson-calm .stepbar .calm-previous{min-width:44px;padding:10px 12px;background:none;border:0;color:var(--muted)}
.calm-help{justify-self:start;position:static;min-width:0}
body.bm-lesson-calm .calm-help>summary{font-size:13px;font-weight:500;gap:7px;min-height:48px}
body.bm-lesson-calm .calm-help>summary:after{display:none}
body.bm-lesson-calm .calm-help[open]{grid-column:auto;grid-row:auto}
body.bm-lesson-calm .calm-help .ef-lesson-help-content{position:absolute;left:0;right:0;bottom:calc(100% + 8px);margin:0;max-height:60dvh;overflow-y:auto;box-shadow:0 8px 32px #0002;padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:16px}
.calm-help .fk-elev-rad{padding:12px 0;gap:16px}
.calm-help .fk-elev-rad>div{display:grid;gap:5px;flex:1}
.calm-help .fk-elev-rad b{font-size:15px}
.calm-help .fk-elev-status{font-size:11px}
body.bm-lesson-calm .ef-foundation-return{margin:0 0 24px;border:0;background:var(--bg2);padding:12px 16px;font-size:13px}
.calm-return-button{display:flex;align-items:center;justify-content:flex-start;justify-self:start;gap:12px;max-width:100%;min-width:0;min-height:48px;padding:12px 16px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);font:inherit;font-size:14px;line-height:1.45;text-align:left;text-decoration:none;cursor:pointer}
.calm-return-button:hover{border-color:var(--ink2)}
.calm-return-arrow{display:grid;place-items:center;flex:0 0 24px;width:24px;height:24px;font-size:20px;line-height:1}
.calm-return-copy{display:grid;gap:3px;min-width:0;overflow-wrap:anywhere}
.calm-return-copy strong{font-weight:600}
.calm-return-copy>span{color:var(--ink2);font-size:13px}
.sign-product{border:1px solid var(--line);border-radius:18px;background:var(--surface);padding:32px 24px;text-align:center;margin:24px 0}
.sign-equation{font-size:1.65rem;overflow-x:auto;padding:8px 0}
.sign-equation .katex-display{margin:0}
.sign-pairs{display:flex;align-items:center;justify-content:center;gap:22px;font-size:25px;margin:20px 0}
.sign-pairs>span{border-bottom:2px solid var(--green);padding:0 12px 8px}
.sign-pairs>i{font-style:normal}
.sign-pairs>b{font-weight:500;background:var(--bg2);border-radius:12px;padding:4px 12px}
.sign-insight{font-size:16px;max-width:38ch;margin:20px auto 12px!important;line-height:1.6}
.sign-change{display:inline-flex;align-items:center;min-height:44px;border:0;background:none;color:var(--muted);font:inherit;font-size:14px;text-decoration:underline;text-underline-offset:4px;cursor:pointer}
.calm-whole-part{padding:24px;margin:32px 0;background:var(--surface);border:1px solid var(--line)!important;border-radius:16px}
.calm-whole-part h2{font-size:25px;margin:8px 0 24px}
.calm-whole-finish{margin:28px 0}
.construction-lab{padding:16px 20px 20px;background:var(--surface);border:1px solid var(--line);border-radius:16px;margin:24px 0}
.construction-scene svg{width:100%;max-height:330px;display:block;color:var(--ink)}
.construction-scene line,.construction-scene path{fill:none;stroke:var(--ink);stroke-width:2}
.construction-scene .construction-arc{stroke:var(--muted);stroke-dasharray:5 4;stroke-width:1.7}
.construction-scene .construction-final{stroke:var(--green);stroke-width:3}
.construction-scene circle{fill:var(--ink)}
.construction-scene text{font-family:inherit;font-size:20px;fill:var(--ink)}
.construction-caption{font-size:16px!important;line-height:1.6;min-height:3.2em;margin:12px 0!important}
.construction-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.construction-position{font-size:12px;color:var(--muted)}
.construction-controls button{min-height:44px;padding:10px 12px;font:inherit;font-size:14px;color:var(--ink);border:1px solid var(--line);border-radius:10px;background:var(--bg);cursor:pointer}
.construction-recipe{font-size:14px;margin-top:12px;color:var(--muted)}
.construction-recipe summary{cursor:pointer;min-height:44px;padding:10px 0}
.construction-recipe ol{padding-left:20px;margin:0}
.construction-recipe li{padding:6px 0;line-height:1.6}
.product-pattern{padding:26px 20px;background:var(--surface);border:1px solid var(--line);border-radius:16px;margin:24px 0;text-align:center}
.product-equation{display:flex;align-items:center;justify-content:center;gap:14px;font-size:30px;line-height:1.4;min-height:64px;font-variant-numeric:tabular-nums}
.product-equation strong{font-weight:600;min-width:45px}
.product-pattern>p{font-size:15px;line-height:1.6;max-width:42ch;margin:14px auto!important}
.product-pattern>[role=group]{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin:20px 0}
.product-pattern button{min-height:44px;min-width:44px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);font:inherit;cursor:pointer}
.product-pattern button[aria-pressed=true]{background:var(--green);color:var(--bg);border-color:var(--green)}
.product-pattern .product-reading{color:var(--muted);min-height:3.2em}
@media(max-width:600px){
 body[data-audience=student].bm-lesson-calm .wrap{padding:10px 16px calc(var(--ef-dock-space,100px) + 16px)}
 body.bm-lesson-calm .calm-top{gap:8px!important;margin-bottom:24px;padding-bottom:10px!important}
 .calm-top .calm-lesson-name{font-size:12px;text-align:left}
 .calm-top .calm-back{font-size:12px}
 .calm-top .calm-part{font-size:12px;min-width:44px}
 body.bm-lesson-calm .slide.player{padding:0 4px;font-size:17px}
 .slide.player #calm-part-title{font-size:27px;margin:8px 0 24px}
 body.bm-lesson-calm .player-col .rule{font-size:17px}
 body.bm-lesson-calm .player-col .exrow{padding:20px 18px;margin-inline:0}
 body.bm-lesson-calm .player-col .exrow .exmath{font-size:1.15rem}
 body.bm-lesson-calm .player-col .tryit{padding:20px 16px;font-size:17px;margin:24px 0}
 body.bm-lesson-calm .player-col .stepbar{padding:10px;gap:8px;min-height:72px;grid-template-columns:44px minmax(0,1fr) minmax(96px,1fr)}
 body.bm-lesson-calm .stepbar .btn{font-size:13px;padding:10px 8px;overflow-wrap:anywhere}
 .calm-previous-text{display:none}
 body.bm-lesson-calm .calm-help>summary{font-size:12px;gap:5px}
 body.bm-lesson-calm .calm-help>summary>span{width:21px;height:21px;font-size:13px;flex-shrink:0}
 .sign-product{padding:24px 16px}
 .sign-equation{font-size:1.25rem}
}
@media(prefers-reduced-motion:reduce){.bm-lesson-calm .reveal,.bm-lesson-calm .tryit{animation:none!important;transition:none!important}}
@media print{body.bm-lesson-calm .calm-top,body.bm-lesson-calm .stepbar{display:none!important}body.bm-lesson-calm .slide.player{padding:0}}
.lesson-deep{border-top:1px solid var(--line);margin:24px 0;font-size:15px;line-height:1.65;color:var(--muted)}
.lesson-deep>summary{min-height:48px;padding:12px 0;cursor:pointer;color:var(--ink);font-weight:500}
.lesson-deep>div{padding-bottom:12px}.lesson-deep .exrow{margin:12px 0!important}
.budget-lab{margin:24px 0;padding:20px 16px;background:var(--surface);border:1px solid var(--line);border-radius:16px}
.budget-lab>p{font-size:15px;line-height:1.6}.budget-lab table{width:100%;border-collapse:collapse;font-size:14px}
.budget-lab caption{text-align:left;font-weight:600;padding:12px 0}.budget-lab th,.budget-lab td{padding:10px 6px;border-bottom:1px solid var(--line);text-align:left}
.budget-lab thead{font-size:11px;color:var(--muted)}.budget-lab td:last-child{text-align:right;width:90px;font-variant-numeric:tabular-nums}
.budget-lab th{font-weight:500}.budget-lab code{font-size:12px;overflow-wrap:anywhere}.budget-lab small{display:block;color:var(--muted);font-size:11px;margin-top:4px}
.budget-lab input{font:inherit;font-size:16px;width:82px;max-width:100%;min-height:44px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);padding:7px;text-align:right}
.budget-lab input:focus{outline:2px solid var(--green);outline-offset:2px}.budget-reading{font-weight:600;margin-bottom:0!important}
.qbox .parbtn{width:auto;height:auto;flex:0 1 auto;min-width:44px;min-height:48px}
.qbox .parvalg{max-width:100%;min-width:0}
.qbox .pairrow .left{min-width:0;flex-basis:100%}
.qbox .parbtn .katex{font-size:1em}
.lesson-code{padding:20px;border:1px solid var(--line);border-radius:12px;overflow:auto;background:var(--surface);font-size:16px;line-height:1.7;color:var(--ink)}
.bm-lesson-calm :is(#calm-part-title,.calm-lesson-name,.calm-whole-part h2){overflow-wrap:anywhere}
.calm-focus-fallback{position:fixed;top:12px;right:16px;z-index:70;min-height:44px;padding:10px 16px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);font:inherit;font-size:13px;cursor:pointer}
.calm-focus-fallback[hidden]{display:none}
body.bm-lesson-calm :is(#tipsbox,.qbox.wrong){animation:none!important;transform:none!important}

/* A quiet position cue: location in the explanation, never a mastery score. */
.calm-position-line{position:absolute;bottom:-1px;left:0;right:0;height:3px;background:var(--line);overflow:hidden}
.calm-position-line i{display:block;height:100%;background:var(--ink2)}
.calm-reading{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:6px 10px;flex-shrink:0;font-weight:600!important}
.calm-top .calm-part,.calm-lesson-name,.bm-lesson-calm .lesson-part-label,.bm-lesson-calm .try-label{color:var(--ink2)!important}
body.bm-lesson-calm .player-col :is(.hint,.exnote),.bm-lesson-calm .try-support :is(button,summary),.bm-lesson-calm .lesson-deep{color:var(--ink2)}
/* Figures explain quantity; the text labels carry the same information without color. */
.economy-lab{--econ-first:var(--ink2);--econ-second:var(--rom-accent,var(--green));--econ-third:var(--muted);margin:20px 0;padding:24px;background:var(--surface);border:1px solid var(--line);border-radius:16px;font-size:1em}
.economy-controls{display:grid;gap:18px;margin-bottom:22px}.economy-controls:empty{display:none}
.economy-controls label{display:grid;gap:4px;font-size:.85em;color:var(--ink)}
.economy-controls label>span{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.economy-controls output{font-weight:700;font-variant-numeric:tabular-nums}
.economy-controls input[type=range]{width:100%;min-width:0;min-height:44px;accent-color:var(--rom-accent,var(--green));cursor:pointer}
.economy-controls input:focus-visible{outline:2px solid var(--ink);outline-offset:4px;border-radius:4px}
.economy-bar-row{margin:18px 0}.economy-bar-label{font-size:.9em;font-weight:600;margin-bottom:8px}
.economy-bar{display:flex;overflow:hidden;gap:2px;height:28px;background:var(--bg2);border-radius:5px}
.economy-bar>span{min-width:0;height:100%;transition:width .18s}
.economy-tone-0{background:var(--econ-first)}.economy-tone-1{background:var(--econ-second);background-image:repeating-linear-gradient(135deg,transparent,transparent 6px,#ffffff50 6px,#ffffff50 8px)}.economy-tone-2{background:var(--econ-third)}
.economy-bar-values,.economy-legend{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.8em;margin:8px 0!important}
.economy-bar-values>span,.economy-legend>span{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.economy-bar-values i,.economy-legend i{display:inline-block;width:12px;height:12px;border-radius:2px;flex-shrink:0}
.economy-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,140px),1fr));gap:12px;margin:22px 0}
.economy-metrics>div{border-left:3px solid var(--line);padding:4px 0 4px 14px;display:grid;gap:5px}
.economy-metrics span{font-size:.8em;color:var(--ink2)}.economy-metrics strong{font-size:1.3em;font-weight:650;font-variant-numeric:tabular-nums}
.economy-equation{font-size:1em;line-height:1.65;margin:20px 0!important;overflow-wrap:anywhere}
.economy-reading{font-size:.9em;line-height:1.65;color:var(--ink2);margin:18px 0 0!important}
.economy-route{display:grid;gap:24px;list-style:none;margin:0;padding:0}
.economy-route li{display:flex;gap:18px;align-items:flex-start}.economy-route li>span{font-size:1.6em;flex:0 0 40px;line-height:1.25;color:var(--ink2)}
.economy-route p{font-size:.9em;line-height:1.6;color:var(--ink2);margin:5px 0 0!important}
.economy-comparison{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:24px}
.economy-comparison h3{font:inherit;font-size:1em;font-weight:650;margin:0 0 12px}
.economy-loan-year{padding:10px 8px;margin:8px -8px;border:1px solid transparent;border-radius:8px;font-size:.8em;display:grid;grid-template-columns:1fr 2fr;gap:5px 10px}
.economy-loan-year>.economy-bar{grid-column:1/-1;grid-row:2;height:22px}
.economy-loan-year>strong{text-align:right;font-variant-numeric:tabular-nums}.economy-loan-year.is-selected{border-color:var(--ink2);background:var(--bg)}
.economy-months{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.economy-months span{display:grid;place-items:center;min-height:44px;border:1px solid var(--line);border-radius:6px;background:var(--bg);font-size:.85em}.economy-months .is-saved{background:var(--ink2);color:var(--surface)}
@media(max-width:600px){.economy-lab{padding:20px 16px}.economy-months{gap:6px}.calm-top{flex-wrap:wrap}.calm-top .calm-lesson-name{order:-1;flex-basis:100%}.calm-top .calm-part{margin-left:auto}}
@media(prefers-reduced-motion:reduce){.economy-bar>span{transition:none}}
/* Explicit reading palettes use dark ink in daylight and light ink at night. */
body[data-rom].bm-lesson-calm[data-reading-palette=white]{--bg:#fff;--surface:#fff;--bg2:#eef0f3;--ink:#202124;--ink2:#38404a;--muted:#48505b;--line:#b5bdc7;--green:#4e3669;--rom-accent:#4e3669;--rom-on:#fff}
body[data-rom].bm-lesson-calm[data-reading-palette=warm]{--bg:#fff8e8;--surface:#fffcf4;--bg2:#f1e8d3;--ink:#26231d;--ink2:#494337;--muted:#514a3e;--line:#b7ac96;--green:#4e3669;--rom-accent:#4e3669;--rom-on:#fff}
body[data-rom].bm-lesson-calm[data-reading-palette=dark]{--bg:#15181c;--surface:#1e2329;--bg2:#292f37;--ink:#f4f4f2;--ink2:#d5dae0;--muted:#c5cbd3;--line:#727d8a;--green:#d2b5f0;--rom-accent:#d2b5f0;--rom-on:#15181c}
body.bm-lesson-calm{--lesson-scale:1}
body.bm-lesson-calm .slide.player{font-size:calc(18px * var(--lesson-scale))}
body.bm-lesson-calm .slide.player #calm-part-title{font-size:calc(32px * var(--lesson-scale));overflow-wrap:anywhere}
body.bm-lesson-calm .player-col :is(.rule,.tryit){font-size:calc(18px * var(--lesson-scale))}
body.bm-lesson-calm .player-col :is(.hint,.exnote,.vfeil,.tryit .ta,.tryit .tfb,.lesson-deep){font-size:calc(16px * var(--lesson-scale))}
body.bm-lesson-calm :is(.try-choice,.try-hint p,.budget-lab table,.budget-lab>p,.budget-lab input){font-size:calc(16px * var(--lesson-scale))}
body.bm-lesson-calm :is(.calm-top button,.calm-top a,.calm-lesson-name,.try-support,.calm-return-button,.calm-return-copy>span){font-size:calc(13px * var(--lesson-scale))}
body.bm-lesson-calm :is(.lesson-part-label,.try-label,.budget-lab small,.budget-lab code){font-size:calc(12px * var(--lesson-scale))}
body.bm-lesson-calm .stepbar .btn,body.bm-lesson-calm .calm-help>summary{font-size:calc(14px * var(--lesson-scale))}
body.bm-lesson-calm #v-quiz :is(.qtext,.choice,.parbtn,input,.fb,.tipsbox,.sub,.action,.btn){font-size:calc(16px * var(--lesson-scale))}
body.bm-lesson-calm .try-support button,body.bm-lesson-calm .try-support summary{white-space:normal}
body.bm-lesson-calm[data-reading-size="200"] .calm-top{position:relative;flex-wrap:wrap}
body.bm-lesson-calm[data-reading-size="200"] .calm-lesson-name{order:-1;flex-basis:100%;text-align:left}
body.bm-lesson-calm[data-reading-size="200"] .player-col .stepbar{position:relative;left:auto;bottom:auto;width:100%;grid-template-columns:1fr;justify-items:stretch;margin-top:28px}
body.bm-lesson-calm[data-reading-size="200"] .stepbar #nextstep{justify-self:stretch}
body.bm-lesson-calm[data-reading-size="200"] .calm-help{justify-self:stretch}
body.bm-lesson-calm[data-reading-size="200"] .calm-help .ef-lesson-help-content{position:static;max-height:none}
body.bm-lesson-calm[data-reading-size="200"] .budget-lab table{display:block;overflow-x:auto}
body.bm-lesson-calm[data-reading-size="200"] .economy-months{grid-template-columns:repeat(4,1fr)}
.reading-dialog{position:fixed;inset:0;margin:auto;width:min(520px,calc(100% - 24px));max-height:calc(100dvh - 32px);overflow-y:auto;padding:24px;border:1px solid var(--line);border-radius:18px;background:var(--surface);color:var(--ink);font:calc(16px * var(--lesson-scale,1))/1.6 system-ui;box-shadow:0 16px 70px #0004}
.reading-dialog::backdrop{background:#0008}.reading-head{display:flex;gap:16px;align-items:flex-start;justify-content:space-between}.reading-head h2{font:600 calc(22px * var(--lesson-scale,1))/1.35 system-ui;margin:0}
.reading-dialog fieldset{border:0;padding:0;margin:24px 0}.reading-dialog legend{font-weight:600;margin-bottom:10px}.reading-choices{display:flex;gap:10px;flex-wrap:wrap}
.reading-dialog button{min-height:48px;min-width:48px;font:inherit;padding:10px 14px;background:var(--bg);border:1px solid var(--ink2);border-radius:10px;color:var(--ink);cursor:pointer}.reading-dialog button[aria-pressed=true],.reading-dialog .reading-done{background:var(--ink);color:var(--surface)}
.reading-dialog button:focus-visible,.calm-reading:focus-visible{outline:3px solid var(--ink2);outline-offset:3px}.reading-dialog p{margin:20px 0;font-size:.875em;color:var(--ink2)}.reading-dialog .reading-done{width:100%}.reading-close{flex-shrink:0}
@media(max-width:600px){body.bm-lesson-calm .slide.player,body.bm-lesson-calm .player-col :is(.rule,.tryit){font-size:calc(17px * var(--lesson-scale))}body.bm-lesson-calm .slide.player #calm-part-title{font-size:calc(27px * var(--lesson-scale))}body.bm-lesson-calm .calm-top .calm-part{white-space:normal}body.bm-lesson-calm[data-reading-size="150"] .player-col .stepbar{grid-template-columns:44px 1fr}body.bm-lesson-calm[data-reading-size="150"] #nextstep{grid-column:1/-1;justify-self:stretch}.reading-dialog{padding:18px}.reading-head h2{font-size:1.25em}.reading-dialog button{padding:10px 12px}}
/* Override the older student-shell selectors at their actual specificity. */
body[data-audience=student].bm-lesson-calm #v-lesson>.player-col{margin:0 auto}
body.bm-lesson-calm #v-lesson .stepbar{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:14px;padding:12px 16px;width:var(--ef-dock-width,min(780px,calc(100% - 48px)));max-width:780px;border-radius:16px}
body.bm-lesson-calm #v-lesson .stepbar .btn{font-size:calc(14px * var(--lesson-scale))!important;min-height:48px;padding:12px 18px}
body.bm-lesson-calm #v-lesson .stepbar .calm-previous{padding:10px 12px}
body.bm-lesson-calm[data-reading-size="200"] #v-lesson .calm-top{flex-wrap:wrap!important}
body.bm-lesson-calm[data-reading-size="200"] #v-lesson .stepbar{position:relative;left:auto;bottom:auto;width:100%;grid-template-columns:1fr;justify-items:stretch;margin-top:28px}
body.bm-lesson-calm[data-reading-size="200"] #v-lesson .stepbar #nextstep{justify-self:stretch}
@media(max-width:600px){
 body.bm-lesson-calm #v-lesson .calm-top{flex-wrap:wrap!important}
 body.bm-lesson-calm #v-lesson .stepbar{padding:10px;gap:8px;grid-template-columns:44px minmax(0,1fr) minmax(96px,1fr)}
 body.bm-lesson-calm #v-lesson .stepbar .btn{padding:10px 8px;font-size:calc(13px * var(--lesson-scale))!important}
 body.bm-lesson-calm[data-reading-size="150"] #v-lesson .stepbar{grid-template-columns:44px 1fr}
 body.bm-lesson-calm[data-reading-size="150"] #v-lesson .stepbar #nextstep{grid-column:1/-1;justify-self:stretch}
 body.bm-lesson-calm[data-reading-size="200"] #v-lesson .stepbar{grid-template-columns:1fr}
 body.bm-lesson-calm[data-reading-size="200"] #v-lesson .calm-top .calm-back{flex-basis:100%;text-align:left}
}

body.bm-lesson-calm .player-col .exrow .exmath{font-size:calc(1.35rem * var(--lesson-scale))}
.economy-route li>div{min-width:0}.economy-metrics strong{overflow-wrap:anywhere}
.economy-fixed{font-size:.8em!important;color:var(--ink2);margin:0 0 14px!important}
@media(max-width:600px){.economy-comparison{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.economy-comparison h3{font-size:.9em;overflow-wrap:anywhere}.economy-loan-year{grid-template-columns:1fr;font-size:.75em;margin:8px 0}.economy-loan-year>strong{grid-column:1;grid-row:3;text-align:left}.economy-loan-year>.economy-bar{grid-column:1;grid-row:2}body[data-reading-size="200"] .economy-comparison{grid-template-columns:1fr}}

body[data-reading-size="200"] .reading-head{flex-wrap:wrap}

body.bm-lesson-calm #v-quiz .ef-quiz-result :is(p,h3,.ef-result-path){font-size:calc(16px * var(--lesson-scale))}
body.bm-lesson-calm #v-quiz .ef-quiz-result h2{font-size:calc(24px * var(--lesson-scale));overflow-wrap:anywhere}
body.bm-lesson-calm .calm-quiz-top button{font-size:calc(13px * var(--lesson-scale));white-space:normal}
body.bm-lesson-calm[data-reading-size="200"] .calm-quiz-top{flex-wrap:wrap}
body.bm-lesson-calm #v-quiz .calm-quiz-top>span{font-size:calc(13px * var(--lesson-scale));color:var(--ink2)}
body.bm-lesson-calm #v-quiz :is(.qmeta,#verktoykasse-knapp,.meldfeil-q){font-size:calc(13px * var(--lesson-scale))}
body.bm-lesson-calm #v-quiz .qmeta{flex-wrap:wrap;gap:8px 18px;color:var(--ink2)}
body.bm-lesson-calm #v-quiz .abc{font-size:calc(13px * var(--lesson-scale));min-width:1.5em;min-height:1.5em}
body.bm-lesson-calm[data-reading-size="200"] #v-quiz .calm-quiz-top>span{order:-1;flex-basis:100%;text-align:left}
body.bm-lesson-calm .calm-whole-part{font-size:calc(18px * var(--lesson-scale))}
body.bm-lesson-calm .calm-whole-part h2{font-size:calc(28px * var(--lesson-scale));overflow-wrap:anywhere}
body.bm-lesson-calm #v-quiz .ef-quiz-result :is(h2,h3){font-family:inherit}
body.bm-lesson-calm #v-quiz .ef-build-label{font-size:calc(12px * var(--lesson-scale));color:var(--ink2)}
body.bm-lesson-calm :is(.product-pattern>p,.sign-insight,.construction-caption,.lesson-code){font-size:calc(16px * var(--lesson-scale))!important;color:var(--ink2)}
body.bm-lesson-calm :is(.construction-controls button,.construction-recipe,.sign-change){font-size:calc(14px * var(--lesson-scale));color:var(--ink2)}
body.bm-lesson-calm :is(.construction-position,.budget-lab thead){font-size:calc(12px * var(--lesson-scale));color:var(--ink2)}
body.bm-lesson-calm .product-equation{font-size:calc(30px * var(--lesson-scale));flex-wrap:wrap}
body.bm-lesson-calm .sign-equation{font-size:calc(1.65rem * var(--lesson-scale))}
body.bm-lesson-calm .sign-pairs{font-size:calc(25px * var(--lesson-scale));flex-wrap:wrap}
body.bm-lesson-calm .budget-lab input{width:calc(82px * var(--lesson-scale));min-width:4.5em}
body.bm-lesson-calm #v-lesson .ef-lesson-help-content{font-size:calc(16px * var(--lesson-scale));color:var(--ink2)}
body.bm-lesson-calm #v-lesson .ef-lesson-help-content :is(strong,b,p,span,button){font-size:inherit;white-space:normal;overflow-wrap:anywhere}
body.bm-lesson-calm .calm-top :is(.bm-share-exercise,.calm-about summary){font-size:calc(13px * var(--lesson-scale))!important;color:var(--ink2)}
body.bm-lesson-calm .calm-about p{font-size:calc(13px * var(--lesson-scale))!important}

body.bm-lesson-calm .budget-lab :is(th,td){font-size:inherit}
body.bm-lesson-calm .budget-lab td:nth-child(2){min-width:7em}
.budget-lab .budget-scroll-hint{display:none}
.number-lab{margin:20px 0;padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--surface);font-size:1em}
body.bm-lesson-calm .rule>span{min-width:0;max-width:100%}
body.bm-lesson-calm .lesson-unit :is(p,.hint,.rule,.exnote,.vfeil,.ta,.tq) .katex{display:inline-block;max-width:100%;overflow-x:auto;overflow-y:hidden;vertical-align:middle;padding-block:.18em}
.number-lab p{font-size:inherit;line-height:1.6}.number-lab .economy-controls{margin-bottom:24px}
.number-wholes{display:grid;gap:12px;margin:16px 0}.number-strip{display:grid;grid-template-columns:repeat(var(--parts),minmax(0,1fr));min-height:48px;border:2px solid var(--ink2);border-radius:5px;overflow:hidden}
.number-strip i{border-right:1px solid var(--ink2);background:var(--bg2);min-height:44px}.number-strip i:last-child{border:0}
.number-selected{background:var(--ink2)!important;color:var(--surface)}.number-second{background:var(--bg2)!important;background-image:repeating-linear-gradient(135deg,transparent,transparent 5px,var(--ink2) 5px,var(--ink2) 7px)!important}
.number-line{position:relative;display:flex;justify-content:space-between;margin:32px 8px 14px;border-top:2px solid var(--ink2);padding-top:8px;font-size:.85em}
.number-line i{position:absolute;top:-8px;width:14px;height:14px;border-radius:50%;background:var(--ink);transform:translateX(-50%)}
.number-lab .number-equation{font-size:1.25em;font-weight:600;margin:20px 0;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.number-groups,.number-area{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.number-groups>div{border:1px solid var(--ink2);padding:16px 8px;overflow-wrap:anywhere;text-align:center;border-radius:8px}
.number-area{gap:0;border:2px solid var(--ink2);max-width:420px}.number-area i{min-height:64px;border:1px solid var(--ink2);background:var(--bg2)}
.number-hundred{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:3px;max-width:320px;margin:0 auto}.number-hundred i{aspect-ratio:1;border:1px solid var(--ink2);background:var(--bg2);border-radius:2px}
.number-comparison{display:grid;gap:12px}.number-comparison p{margin:0}.number-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,160px),1fr));gap:20px;margin:20px 0}.number-metrics>div{display:grid;gap:8px;min-width:0}.number-metrics span{font-size:.8em;color:var(--ink2)}.number-metrics strong{font-size:1.35em;overflow-wrap:anywhere}
.number-lab .number-reading{font-size:.9em;color:var(--ink2);margin:20px 0 0}.number-price-bar{background:var(--bg2);height:48px;border:2px solid var(--ink2);border-radius:5px;overflow:hidden}.number-price-bar i{display:block;background:var(--ink2);height:100%}
.number-route{list-style:none;padding:0;margin:12px 0;display:grid;gap:16px}.number-route li{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:10px 0;flex-wrap:wrap}.number-route strong{font-size:1.3em}
@media(max-width:600px){.number-lab{padding:20px 16px}.number-groups{grid-template-columns:repeat(2,minmax(0,1fr))}.number-groups>div{padding:12px 8px}}
.budget-lab table:focus-visible{outline:2px solid var(--ink2);outline-offset:3px}
@media(max-width:600px){body.bm-lesson-calm[data-reading-size="200"] .budget-scroll-hint{display:block;font-size:calc(13px * var(--lesson-scale))}}
body.bm-lesson-calm .budget-lab table{display:block;overflow-x:auto}
@media(max-width:600px){body.bm-lesson-calm .budget-scroll-hint{display:block;font-size:calc(13px * var(--lesson-scale))}}

.player-col[data-calm]:not(.calm-whole) .construction-lab:not([data-stage="3"]) .construction-controls button{display:none}
body.bm-lesson-calm .lesson-route small{font-size:calc(13px * var(--lesson-scale));color:var(--ink2)}
body.bm-lesson-calm .lesson-route strong{font-size:calc(15px * var(--lesson-scale))}

.visual-choice{margin-bottom:18px}.visual-choice .choice{width:100%;margin-bottom:8px}.visual-choice .choice>span:last-child{min-width:0;flex:1}.visual-choice .choice img{display:block;width:220px;max-width:100%;height:auto;max-height:230px;object-fit:contain;margin:0 auto 10px;background:#fff;border-radius:8px}.visual-choice-caption{display:block}.visual-choice>.reading-enlarge{display:block;margin-left:auto}

.hot-zoom-tools{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:12px 0}.hot-zoom-tools button{min-height:44px;padding:8px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink);font:inherit}.hot-zoom-tools button[aria-pressed=true]{border:2px solid var(--ink);font-weight:700}.hot-scroll{max-width:100%;max-height:min(70vh,650px);overflow:auto;overscroll-behavior:contain;border:1px solid var(--line);border-radius:10px}.hot-scroll:focus-visible{outline:3px solid var(--ink);outline-offset:3px}

/* Keep long lesson names above the mobile quiz controls instead of squeezing between them. */
@media(max-width:600px){body.bm-lesson-calm #v-quiz .calm-quiz-top>span{order:-1;flex:0 0 100%;overflow-wrap:anywhere}body.bm-lesson-calm #v-quiz .calm-quiz-top>.back{margin-right:auto}}

.qbox .labelled-blanks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;font-size:inherit;line-height:1.5}.qbox .blank-field{display:grid;gap:8px;min-width:0}.qbox .blank-field>span{font-size:.85em}.qbox .blank-field :is(input,select){display:block;width:100%;max-width:100%;min-width:0;margin:0;min-height:48px;font:inherit;font-size:1em}
@media(max-width:600px){.qbox .labelled-blanks{grid-template-columns:minmax(0,1fr)}}

.pair-figure{display:grid;gap:10px;min-width:0;max-width:100%}.qbox .pair-figure img{display:block;max-width:100%;height:auto}.pair-figure .reading-enlarge{justify-self:start;white-space:normal;max-width:100%;min-height:44px}