.st2,.st2 *{box-sizing:border-box}.st2{font-family:inherit!important;max-width:100%;width:100%;contain:layout style;overflow:hidden;color:#142333;line-height:1.45}.st2 button,.st2 select{font:inherit;cursor:pointer}.st2-head,.st2-options,.st2-nav,.st2-tools{display:flex;align-items:center;gap:12px;justify-content:space-between;flex-wrap:wrap}.st2-head{font-size:20px;font-weight:650;margin-bottom:14px}.st2-toggle{background:#f0f2f6;padding:4px;border-radius:10px;display:flex;gap:2px}.st2-toggle button{border:0;background:transparent;padding:8px 12px;border-radius:7px;color:#28354a}.st2-toggle button.selected{background:white;box-shadow:0 1px 4px #0012}.st2-options{margin-bottom:12px}.st2-options label{display:flex;align-items:center;gap:8px;font-size:14px}.st2-options select,.st2-tools button,.st2-nav button,.st2-quiz button{border:1px solid #d4d9e1;background:#fff;border-radius:9px;padding:9px 12px;color:#263445}.st2-stage{height:auto;aspect-ratio:1.6;background:#08090c;border-radius:12px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;touch-action:pan-y}.st2-stage img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;image-rendering:auto;user-select:none;transform-origin:center;display:block}.st2-stage img:not([src]){display:none}.st2-stage [data-message]{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center;color:#ccd0d9;font-size:15px;pointer-events:none}.st2-stage [data-message][hidden]{display:none}.st2-side{position:absolute;color:#ddd9;font-size:13px;top:50%}.st2-l{left:10px}.st2-r{right:10px}.st2-nav{margin-top:12px;flex-wrap:nowrap}.st2-nav input{min-width:0;flex:1;accent-color:#667991}.st2-nav [data-position]{min-width:63px;text-align:right;font-variant-numeric:tabular-nums;font-size:13px}.st2-tools{justify-content:flex-start;margin-top:12px}.st2-guide{margin-top:16px;border-top:1px solid #e2e6ed;padding-top:12px}.st2-guide summary{cursor:pointer}.st2-quiz{border-top:1px solid #e2e6ed;margin-top:12px;padding-top:10px}.st2-quiz [data-feedback]{font-size:14px}.st2-quiz button{margin-right:8px}.st2:fullscreen{background:white;padding:16px;overflow:auto}.st2:fullscreen .st2-stage{max-height:75vh}@media(max-width:650px){.st2-head{font-size:17px}.st2-toggle button{font-size:13px;padding:7px}.st2-stage{aspect-ratio:1.1}.st2-tools{gap:6px}.st2-tools button{font-size:12px;padding:7px}}

.st2-nav [data-play]{white-space:nowrap;min-width:104px}.st2-stage img{will-change:transform}@media(max-width:650px){.st2-nav [data-play]{min-width:82px;padding:7px;font-size:12px}}
.st2-nav [data-play]{display:inline-flex;align-items:center;justify-content:center;gap:7px;color:#171c25;background:#fff;border:1px solid #d4d9e1;min-width:106px}.st2-nav [data-play] svg{width:17px;height:17px;flex:none}.st2-quiz [data-answers]{display:flex;flex-wrap:wrap;gap:8px}.st2-quiz [data-answers] button:disabled{opacity:.72;cursor:default}.st2-quiz [data-question-next]{border:1px solid #cfd5df;border-radius:8px;background:#fff;color:#152233;padding:9px 13px}.st2-options[hidden],.st2-quiz[hidden]{display:none!important}.st2.st2-fullscreen{position:fixed!important;inset:0!important;z-index:2147483000!important;width:100vw!important;height:100dvh!important;max-width:none!important;background:white!important;overflow-y:auto!important;padding:12px!important;contain:none!important}.st2.st2-fullscreen .st2-stage{height:65dvh;aspect-ratio:auto}.st2:fullscreen{width:100vw;height:100vh;max-width:none;contain:none}.st2:fullscreen .st2-stage{height:70vh;aspect-ratio:auto}

.st2[data-mode="train"] .st2-training-options .st2-toggle{display:none!important}.st2-quiz [data-task-hint]{font-size:13px;color:#586676}.st2-quiz [data-check-task]{border:1px solid #263445;background:#263445;color:#fff}.st2-stage img{max-width:100%;max-height:100%;object-fit:contain}

.st2-speed-label{display:inline-flex;align-items:center;gap:6px;font-size:13px;white-space:nowrap}.st2-speed-label select{font:inherit;border:1px solid #d6dbe0;border-radius:7px;padding:6px;background:#fff;color:#192333}@media(max-width:650px){.st2-speed-label{font-size:12px}}