.dpl-lesson{max-width:1150px;margin:auto;color:#173950;line-height:1.3;text-align:center}
.dpl-lesson header{margin:0 0 3px}
.dpl-lesson h1{font-size:clamp(18px,2.6vw,25px);line-height:1.2;margin:2px 0}
.dpl-lesson button,.dpl-lesson input,.dpl-lesson select{font:inherit}
.dpl-lesson button{border:2px solid #075bb6;background:#e4f1ff;color:#064278;font-weight:800;padding:5px 9px;cursor:pointer;touch-action:manipulation}
.dpl-lesson button:hover:not(:disabled){background:#c9e3ff;border-color:#043970}
.dpl-lesson button[aria-pressed=true],.dpl-lesson button.dpl-correct{background:#00764c;color:#fff;border-color:#005236}
.dpl-lesson button.dpl-wrong{background:#ffe6a0;border-color:#8a4100;color:#693400}
.dpl-lesson button:disabled{background:#edf0f3!important;border-color:#aab3bc!important;color:#737d88!important;opacity:.58;box-shadow:none!important;cursor:not-allowed}
.dpl-lesson :is(button,input,select):focus-visible{outline:3px solid #8a4100;outline-offset:2px}
.dpl-board{position:relative;min-width:0;box-sizing:border-box;background:#fff;border:2px solid #486d87;border-radius:0;padding:5px;overflow:visible}
.dpl-story{margin:0;padding:3px 5px;color:#173950;font-size:clamp(14px,1.7vw,18px);font-weight:700;line-height:1.4;overflow-wrap:anywhere}
.dpl-story strong,.dpl-story b{color:#b40d56;font-size:1.15em;font-weight:900;white-space:nowrap}
.dpl-phases{display:flex;justify-content:center;align-items:stretch;gap:4px;flex-wrap:nowrap;margin:3px 0;font-size:12px;line-height:1.2;font-weight:800;direction:rtl}
.dpl-phases span{display:inline-flex;justify-content:center;align-items:center;border:1px solid #6d8395;background:#f0f4f7;color:#334d60;padding:3px 9px;min-width:0}
.dpl-phases span[aria-current=true],.dpl-phases span[aria-current=step]{background:#075bb6;border-color:#043970;color:#fff}
.dpl-caption{margin:0;padding:4px 6px;min-height:1.3em;background:#fff0b4;color:#693d00;border:1px solid #9b6100;text-align:center;font-size:14px;font-weight:800;line-height:1.3}
.dpl-scene{min-width:0;margin:3px 0;position:relative;overflow:visible}
.dpl-scene svg{display:block;width:100%;height:auto;max-height:min(350px,40dvh);margin:auto;overflow:visible;touch-action:manipulation}
.dpl-scene svg [role=button],.dpl-scene svg [tabindex="0"]{cursor:pointer}
.dpl-scene svg [role=button]:focus-visible,.dpl-scene svg [tabindex="0"]:focus-visible{outline:3px solid #8a4100;outline-offset:3px}
.dpl-equation,.dpl-question-equation{font-size:clamp(25px,3.2vw,32px);font-weight:900;line-height:1.2;text-align:center;margin:3px 0;min-height:1.2em;color:#075bb6}
.dpl-result{color:#00764c;font-size:clamp(15px,1.7vw,17px);font-weight:900;line-height:1.3;min-height:1.3em;margin:2px 0;text-align:center}
.dpl-math{display:flex;flex-wrap:wrap;justify-content:center;align-items:baseline;gap:0 8px;min-width:0}
.dpl-math .dpl-equation{min-width:0;max-width:100%}
.dpl-math:has(.dpl-equation[hidden]) .dpl-result{font-size:26px}
.dpl-views,.dpl-navigation{display:inline-flex;gap:5px;flex-wrap:wrap;justify-content:center;align-items:center;vertical-align:middle;margin:4px 2px}
.dpl-actions{display:flex;gap:3px;flex-wrap:wrap;justify-content:center;align-items:center}
.dpl-lesson .dpl-views button,.dpl-lesson .dpl-navigation button{font-size:12px!important;min-height:34px!important;padding:5px 7px!important;display:inline-flex;gap:4px;justify-content:center;align-items:center;white-space:nowrap}
.dpl-navigation button span,.dpl-views button span{pointer-events:none}
.dpl-lesson label{display:inline-flex;align-items:center;gap:5px;font-weight:700;text-align:start}
.dpl-lesson input,.dpl-lesson select{border:1px solid #486d87;background:#fff;color:#173950;min-height:34px;padding:4px 6px;max-width:100%;box-sizing:border-box}
.dpl-lesson input[type=checkbox]{min-height:20px;width:20px;accent-color:#075bb6}
.dpl-lesson form{display:flex;align-items:center;flex-wrap:wrap;gap:7px;width:100%;text-align:start}
.dpl-lesson form input{width:90px;font-size:19px;font-weight:800}
.dpl-lesson form small,.dpl-lesson form [role=alert]{width:100%;font-size:13px;line-height:1.35}
.dpl-lesson [role=alert]{color:#a70937;font-weight:800}
.dpl-controls{display:flex;gap:9px;flex-wrap:wrap;justify-content:center;align-items:center;margin:5px 0;text-align:start}
.dpl-controls label{flex-wrap:wrap}
.dpl-controls select{max-width:100%}
.dpl-question{border:3px solid #8a4100;background:#fff0bc;color:#593000;padding:7px;text-align:center;box-sizing:border-box}
.dpl-question strong{display:block;font-size:17px;line-height:1.3}
.dpl-question-equation{color:#075bb6}
.dpl-choices{display:flex;gap:5px;flex-wrap:wrap;justify-content:center;align-items:center;margin:5px 0}
.dpl-choices button{min-width:62px;max-width:100%;min-height:40px;font-size:20px}
.dpl-question p{margin:4px 0;font-size:14px;line-height:1.3;font-weight:800}
.dpl-lesson [hidden]{display:none!important}
.dpl-facts{font-size:13px;text-align:right;border-inline-start:4px solid #075bb6;padding-inline-start:6px;margin:3px 0;line-height:1.3}
.dpl-facts p{margin:2px 0}.dpl-facts b{color:#b40d56}
.dpl-equation[data-long=true]{font-size:clamp(18px,2.6vw,27px)}
.dpl-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px}
.dpl-choices label{cursor:pointer;background:#fff;border:2px solid #075bb6;color:#173950;padding:5px 7px;font-size:14px;line-height:1.3;align-self:stretch;min-width:0}
.dpl-choices input{width:19px;height:19px;min-height:19px;flex-shrink:0;accent-color:#075bb6}
.dpl-choices label.dpl-correct{background:#006344;color:#fff;border-color:#004d35}
.dpl-choices label.dpl-wrong{background:#ffe6a0;color:#693400;border-color:#8a4100}
.dpl-choices label:has(input:focus-visible){outline:3px solid #8a4100;outline-offset:2px}
.dpl-question strong b{display:inline;color:#b40d56;font-size:1.1em}
@media(max-width:650px){.dpl-choices label{font-size:12px;padding:4px}.dpl-facts{font-size:12px}.dpl-board:has(.dpl-question:not([hidden])) .dpl-scene{max-height:100px}.dpl-board:has(.dpl-question:not([hidden])) .dpl-scene svg{max-height:100px}}
@media(max-height:500px) and (min-width:651px){.dpl-facts{font-size:11px;line-height:1.2;margin:1px 0}.dpl-facts p{margin:0}.dpl-choices{grid-template-columns:repeat(3,minmax(0,1fr));gap:3px}.dpl-choices label{font-size:11px;line-height:1.15;padding:2px 4px}.dpl-board:has(.dpl-question:not([hidden])) .dpl-scene svg{max-height:65px}.dpl-question p{margin:1px;font-size:10px}}
@media(max-height:680px){
 .mv-experience:has(.dpl-lesson) .mv-teacher-footer{margin-top:2px;padding:2px 0}
 .mv-experience:has(.dpl-lesson) .mv-teacher-footer button{min-height:32px!important;padding:3px 8px!important;font-size:12px!important}
 .mv-experience:has(.dpl-lesson) .mv-workspace-tools{padding:2px;margin-block:2px}
 .mv-experience:has(.dpl-lesson) .mv-workspace-tools button{min-height:30px!important;padding:2px 6px!important;font-size:12px!important}
 .mv-experience .dpl-lesson header{margin-bottom:2px!important}
 .mv-experience .dpl-navigation,.mv-experience .dpl-views{margin-block:3px!important}
}
@media(max-width:650px){
 .dpl-actions{display:block}
 .dpl-question:is([data-question-kind=data],[data-question-kind=plan]) .dpl-choices{grid-template-columns:1fr}
 .dpl-board{padding:4px}
 .dpl-story{font-size:14px;padding:2px;line-height:1.35}
 .dpl-phases{font-size:11px;gap:3px;margin:3px 0}
 .dpl-phases span{padding:3px 6px;flex:1}
 .dpl-caption{font-size:13px;padding:4px;line-height:1.3}
 .dpl-scene svg{max-height:min(240px,34dvh)}
 .dpl-equation{font-size:26px;margin:2px 0}
 .dpl-result{font-size:15px;margin:2px 0}
 .dpl-lesson .dpl-views{display:flex;margin:4px 0}
 .dpl-lesson .dpl-views button{font-size:12px!important;min-height:32px!important;padding:4px 8px!important}
 .dpl-lesson .dpl-navigation{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;margin:4px 0}
 .dpl-lesson .dpl-navigation button{font-size:11px!important;padding:4px 2px!important;min-height:32px!important}
 .dpl-question{padding:5px}
 .dpl-question strong{font-size:14px}
 .dpl-question-equation{font-size:25px}
 .dpl-choices button{font-size:18px;min-width:52px}
 .dpl-question p{font-size:13px}
}
@media(max-width:360px){
 .dpl-story{font-size:13px}
 .dpl-phases{font-size:10px}
 .dpl-phases span{padding:3px 2px}
 .dpl-caption{font-size:12px}
 .dpl-scene{margin:2px 0}
 .dpl-scene svg{max-height:205px}
 .dpl-equation{font-size:24px}
 .dpl-result{font-size:14px}
 .dpl-lesson .dpl-navigation{gap:3px}
 .dpl-lesson .dpl-navigation button{font-size:10.5px!important}
}
@media(max-height:500px) and (min-width:651px){
 .skill-layout:has(.dpl-lesson){padding-block:2px!important}
 .mv-experience:has(.dpl-lesson){padding-block:3px!important}
 .mv-experience .dpl-lesson h1{font-size:17px!important;line-height:1.1!important;margin:1px 0!important}
 .dpl-board{padding:3px}
 .dpl-story{font-size:11px;line-height:1.2;padding:1px 3px;margin:0}
 .dpl-story strong,.dpl-story b{font-size:1.12em}
 .dpl-phases{font-size:10px;line-height:1.1;gap:3px;margin:1px 0}
 .dpl-phases span{padding:2px 8px}
 .dpl-caption{font-size:11px!important;padding:1px 4px;min-height:0;line-height:1.2}
 .dpl-scene{margin:1px 0}
 .dpl-scene svg{max-height:120px}
 .dpl-equation{font-size:22px;line-height:1.05;min-height:0;margin:1px 0}
 .dpl-result{font-size:12px;line-height:1.2;min-height:0;margin:1px 0}
 .dpl-navigation,.dpl-views{gap:3px;margin:2px 1px}
 .dpl-lesson .dpl-navigation button,.dpl-lesson .dpl-views button{font-size:10.5px!important;min-height:29px!important;padding:2px 5px!important}
 .dpl-question{padding:3px}
 .dpl-question strong{font-size:12px;line-height:1.2}
 .dpl-question-equation{font-size:21px;margin:1px;min-height:0}
 .dpl-question p{font-size:11px;margin:2px 0}
 .dpl-choices{gap:4px;margin:3px 0}
 .dpl-choices button{font-size:15px;min-height:28px!important;padding:2px 6px!important}
 .mv-experience:has(.dpl-lesson) .mv-teacher-footer button{min-height:29px!important;padding:2px 7px!important;font-size:11px!important}
 .mv-experience:has(.dpl-lesson) .mv-teacher-footer{margin-top:1px;padding-block:1px}
 .mv-experience .dpl-navigation,.mv-experience .dpl-views{margin-block:2px!important}
}
@media(max-height:390px) and (min-width:651px){
 .dpl-scene svg{max-height:125px}
}