.bb-start .bb-visible-mode{flex:1 1 100%;margin:0!important}.bb-teaching{max-width:var(--bb-col);margin:14px auto 22px;padding:22px clamp(18px,3vw,28px);border:1px solid var(--bb-line);border-radius:16px;background:var(--bb-card);color:var(--bb-ink);font-family:var(--bbf)}.bb-teaching h2{margin:0 0 8px;font-size:clamp(1.5rem,1.2rem + 1vw,2rem);line-height:1.2}.bb-teaching-intro{max-width:72ch;margin:0 0 12px;line-height:1.55}.bb-view-note{margin:0 0 18px;padding:9px 12px;border-left:4px solid var(--bb-turf);border-radius:6px;background:var(--bb-tint);font-weight:700}.bb-coach-note{display:none}.exp-coach-view .bb-quiz-note{display:none}.exp-coach-view .bb-coach-note{display:block}.bb-teach-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:20px}.bb-teach-card{min-width:0;padding:16px;border:1px solid var(--bb-line);border-radius:12px;background:var(--bb-cream)}.bb-teach-card h3{margin:0 0 8px;font-size:1.12rem;line-height:1.25;color:var(--bb-turf-deep)}.bb-teach-card p{margin:0 0 9px;line-height:1.55}.bb-teach-card p:last-child{margin-bottom:0}.bb-teach-card strong{color:var(--bb-turf-deep)}.exp-coach-answer{display:none;margin-top:14px;padding:12px;border-left:4px solid #14532d;background:#e8f4ec;line-height:1.5}.exp-coach-answer span{display:block;margin-top:5px}.exp-coach-view .exp-coach-answer{display:block}.exp-answered .exp-option[data-key="true"],.exp-coach-view .exp-option[data-key="true"]{border:2px solid #14532d;padding:calc(.7rem - 1px);background:#e8f4ec}.exp-wrong .exp-option:has(input:checked){border:2px solid #9d231b;padding:calc(.7rem - 1px);background:#fff0ed}.exp-first-count{margin:0 0 8px;color:#eafaf0;font-size:.75rem}@media(max-width:680px){.bb-teach-grid{grid-template-columns:1fr}}@media print{.bb-teaching{border:0;padding:0;background:#fff}.bb-teach-grid{grid-template-columns:1fr}.bb-teach-card{break-inside:avoid}.bb-quiz-start{display:none!important}.bb-view-note,.exp-feedback,.exp-actions,.exp-first-count{display:none!important}.exp-root:not(.exp-coach-view) .exp-option[data-key="true"],.exp-root:not(.exp-coach-view) .exp-option:has(input:checked){border:1px solid #777;padding:.7rem;background:#fff}.exp-option input[type=radio]{appearance:none;-webkit-appearance:none;width:13px;height:13px;border:1px solid #333;border-radius:50%}.exp-coach-view .exp-coach-answer{display:block!important}.exp-coach-view .exp-option[data-key="true"]{border:2px solid #14532d;padding:calc(.7rem - 1px);background:#e8f4ec}}