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#ffffff14}.bar-label{color:#fff6e59e;letter-spacing:.18em;writing-mode:vertical-rl;font-size:.62rem;font-weight:900}.board-point{justify-content:center;min-width:0;display:flex;position:relative;overflow:hidden}.point-triangle{filter:drop-shadow(0 2px 1px #00000014);width:86%;height:88%;position:absolute;left:7%}.point-triangle--down{clip-path:polygon(0 0,100% 0,50% 100%);top:0}.point-triangle--up{clip-path:polygon(50% 0,100% 100%,0 100%);bottom:0}.point-triangle--burgundy{background:linear-gradient(90deg,#73362f,#9d5044 50%,#663027)}.point-triangle--gold{background:linear-gradient(90deg,#b87835,#dc9c4a 50%,#aa692c)}.point-number{z-index:9;color:#412a19bf;font-size:clamp(.55rem,1.4vw,.75rem);font-weight:900;line-height:1;position:absolute}.board-point--down .point-number{top:7px}.board-point--up .point-number{bottom:7px}.checker-stack{z-index:10;align-items:center;width:82%;display:flex;position:absolute;left:50%;transform:translate(-50%)}.checker-stack--down{flex-direction:column;top:22px}.checker-stack--up{flex-direction:column-reverse;bottom:22px}.checker{aspect-ratio:1;border:2px solid #2d1d127a;border-radius:50%;width:min(90%,46px);margin-top:-6%;display:block;box-shadow:inset 0 0 0 3px #ffffff1f,inset 0 -5px 8px #0000002e,0 3px 5px #0000003d}.checker-stack--down .checker:first-child,.checker-stack--up .checker:first-child{margin-top:0}.checker--cream{background:radial-gradient(circle at 35% 28%,#fefcf7 0 10%,#0000 11%),radial-gradient(circle,#f3e8cf,#cbb58e 72%)}.checker--dark{background:radial-gradient(circle at 35% 28%,#885e49 0 10%,#0000 11%),radial-gradient(circle,#56372a,#241711 74%)}.board-center-line{z-index:12;background:linear-gradient(90deg,#ffffff12,#0000),#5b3827;justify-content:space-between;align-items:center;padding:0 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#0003}.board-caption{color:#5e4432;justify-content:center;align-items:center;gap:9px;margin-top:18px;font-weight:700;display:flex}.board-caption strong{color:#fdf8ef;background:#744232;border-radius:4px;justify-content:center;align-items:center;min-width:42px;padding:6px 10px;display:inline-flex}.turn-indicator{background:#4d74a4;border-radius:50%;width:10px;height:10px;box-shadow:0 0 0 5px #3a6ba824}@media (width<=760px){.board-section{border-radius:2px;padding:16px}.board-heading{flex-direction:column;align-items:flex-start}.backgammon-shell{grid-template-columns:28px minmax(0,1fr) 28px;gap:5px}.backgammon-board{border-width:8px;min-height:430px}.board-half{grid-template-columns:minmax(0,1fr) 36px minmax(0,1fr)}.checker{border-width:1px}.board-center-line{padding:0 9px}.doubling-cube,.die{width:30px}.bear-off{border-width:4px}.bear-off span{font-size:.52rem}}@media (width<=480px){.board-tools{width:100%}.board-tool{flex:1;padding:9px 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#2d1e0c59)}.move-exercise{margin-top:24px}.exercise-instruction,.exercise-feedback,.exercise-takeaway{color:#1e2a3a;background:#fdfaf2;border-radius:2px;margin:16px 0;padding:24px}.exercise-instruction h3,.exercise-feedback h3,.exercise-takeaway h3{margin:6px 0 12px}.exercise-instruction p,.exercise-feedback p,.exercise-takeaway p{line-height:1.65}.exercise-feedback{border-left:5px solid #977423}.exercise-feedback-best{background:#e8eef6;border-color:#3a6ba8}.exercise-feedback-known{background:#fdf0dc;border-color:#a36718}.exercise-feedback-other{background:#fae9de;border-color:#a75a3b}.exercise-history{color:#2c4a74;line-height:1.6}.exercise-limit{font-size:.92rem}.exercise-takeaway a{color:#2f5c98;text-underline-offset:3px}.exercise-actions,.bg-destination-buttons{flex-wrap:wrap;gap:12px;display:flex}.exercise-actions{margin:20px 0}.bg-move-controls{flex-wrap:wrap;align-items:end;gap:16px;margin-top:16px;display:flex}.bg-move-controls label{color:#1e2a3a;gap:8px;font-weight:700;display:grid}.bg-move-controls select{color:#1e2a3a;max-width:100%;min-height:48px;font:inherit;background:#fdfaf2;border:1px solid #8494a8;border-radius:2px;padding:10px 14px}.bg-destination-buttons button,.exercise-actions button{min-height:48px}.bg-point:focus-visible polygon{stroke:#fff;stroke-width:6px}.bg-point[aria-disabled=true]{cursor:default}.bg-checker-stack-active{pointer-events:none}@media (width<=600px){.exercise-instruction,.exercise-feedback,.exercise-takeaway{padding:18px}.exercise-actions{flex-direction:column}.exercise-actions button{justify-content:center;width:100%}.bg-move-controls{flex-direction:column;align-items:stretch}.bg-destination-buttons button{flex:120px}.bg-move-controls select{width:100%}}@media (prefers-reduced-motion:reduce){.bg-point polygon{transition:none}}.exercise-explanation{max-width:840px}.exercise-explanation-section{margin-top:28px}.exercise-explanation-section h4{margin:0 0 12px;font-size:1.08rem;line-height:1.5}.exercise-reflection{background:#e9eef6;border:1px solid #b3c4dd;border-radius:2px;margin-top:28px;padding:16px}.exercise-reflection summary{cursor:pointer;min-height:44px;font-weight:700;line-height:1.6}.exercise-reflection summary:focus-visible{outline-offset:4px;outline:3px solid #3a6ba8}.exercise-sources{gap:12px;display:grid}.pip-count-form{gap:12px;max-width:440px;display:grid}.pip-count-form label{font-weight:700}.pip-count-form input{color:#1e2a3a;width:100%;min-width:0;min-height:48px;font:inherit;box-sizing:border-box;background:#fdfaf2;border:1px solid #8494a8;border-radius:2px;padding:10px 14px}.pip-count-form input:focus-visible{outline-offset:3px;outline:3px solid #3a6ba8}.pip-count-form button{min-height:48px}.pip-count-form button:disabled{opacity:.5;cursor:default}.lesson-progress-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,290px),1fr));gap:20px;display:grid}.lesson-progress-grid h4{margin:0 0 12px;font-size:1.3rem}.lesson-progress-grid p{line-height:1.6}.lesson-progress-grid button{white-space:normal;max-width:100%;min-height:48px}.lesson-progress-grid ul{padding-left:20px;line-height:1.7}.module-link{color:inherit;text-decoration:none}.module-link:hover{background:#eef2f9;border-color:#1f4e8c}.module-link:focus-visible{outline-offset:4px;outline:3px solid #1f4e8c}.module-open{color:#1f4e8c;margin-bottom:0;font-weight:750}.module-navigation{text-decoration:none;display:inline-flex}.assessment-choice-selected,.quiz-choice[aria-pressed=true]{outline-offset:2px;background:#e8ebf2;outline:3px solid #1f4e8c}.quiz-choice:disabled:hover{box-shadow:none;transform:none}.challenge-board-target:focus{outline-offset:4px;border-radius:2px;outline:3px solid #3a6ba8}.quiz-step-heading:focus-visible{outline-offset:4px;outline:3px solid #3a6ba8}.opponent-reply-dice label{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.opponent-reply-dice select{color:#1e2a3a;min-width:72px;min-height:48px;font:inherit;background:#fdfaf2;border:1px solid #8494a8;border-radius:2px;padding:10px 14px}.play-teaser{background:linear-gradient(120deg,#1f4e8c14,#f2a9001a 70%);border:1px solid #1a345e14;border-radius:2px;padding:30px 34px;box-shadow:6px 6px #1e2a3a14}.play-teaser h3{letter-spacing:-.03em;margin:8px 0 0;font-family:Bricolage Grotesque,Georgia,serif;font-size:clamp(1.6rem,3.5vw,2.3rem);font-weight:500}.play-teaser-content{flex-direction:column;align-items:flex-start;gap:10px;display:flex}.play-teaser .primary-button{margin-top:6px}.play-status-section{margin-bottom:34px}.play-scores{flex-wrap:wrap;justify-content:center;align-items:stretch;gap:16px;margin-bottom:18px;display:flex}.play-score{background:#ffffffd9;border:1px solid #1a345e14;border-radius:2px;flex-direction:column;gap:2px;min-width:190px;padding:14px 22px;display:flex;box-shadow:4px 4px #1e2a3a14}.play-score strong{letter-spacing:-.02em;font-family:Bricolage Grotesque,Georgia,serif;font-size:1.15rem}.play-level-chip{color:#1f4e8c;letter-spacing:.08em;text-transform:uppercase;background:#fdf3dc;border-radius:2px;align-self:center;padding:8px 16px;font-size:.78rem;font-weight:800}.play-status{background:#ffffffb3;border-left:4px solid #f2a900;margin:0 0 16px;padding:14px 18px;font-weight:600}.play-actions{flex-wrap:wrap;gap:14px;display:flex}.play-log{gap:8px;margin:0;padding:0;list-style:none;display:grid}.play-log li{background:#ffffffbf;border:1px solid #1a345e12;border-radius:2px;padding:10px 16px}.bot-level-card{cursor:pointer;text-align:left;font:inherit;color:inherit;transition:transform .15s,box-shadow .15s}.bot-level-card:hover{transform:translate(-2px,-2px);box-shadow:8px 8px #1e2a3a24}.bot-level-card .module-open{color:#1f4e8c;font-weight:760}@media (width<=720px){.play-scores{gap:10px}.play-score{flex:40%;min-width:150px}}