.tabs{flex-wrap:wrap;gap:12px 20px}.drill-intro h2{border:0;margin-top:0;padding-top:0}.drill-intro p{color:var(--muted)}.drill-toolbar{max-width:250px;margin:18px 0 8px}.drill-stage{margin-top:28px;border-top:1px solid var(--line);padding-top:26px}.drill-question h3{font:23px/1.6 var(--serif);margin:14px 0 24px}.drill-stage label{display:block;font-size:12px;margin-bottom:8px}.recall-answer{display:block;width:100%;padding:14px;border:1px solid var(--line);background:#fbfcf7;resize:vertical;margin-bottom:18px;font-size:14px}.drill-answer{border-left:3px solid #9aaf75;margin:22px 0;padding:1px 18px;background:#f3f6eb}.drill-rate{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.drill-rate>span{width:100%;font-size:12px}.drill-rate .rate{flex:1;min-width:65px;width:auto;white-space:nowrap}.drill-stage>.secondary{margin-top:12px}.drill-stage [hidden]{display:none!important}.study-figure{margin:24px 0}.study-figure figcaption{font-size:11px;color:var(--muted)}.figure-zoom{display:block;border:1px solid var(--line);background:#fffef9;padding:8px;max-width:100%;width:100%;cursor:zoom-in}.figure-zoom img{max-width:100%;height:auto;margin:0 auto}.figure-warning{color:#875328;background:#fff4dc;padding:10px}.source-only{margin:14px 0}.source-only summary{font-size:12px;cursor:pointer}.image-lightbox{width:min(1200px,95vw);max-width:95vw;max-height:94vh;padding:20px;background:var(--paper);border:1px solid var(--line)}.image-lightbox::backdrop{background:#132319cc}.image-lightbox>.secondary{width:auto}.lightbox-caption{font-size:12px}.lightbox-scroll{overflow:auto;max-height:70vh}.lightbox-scroll img{display:block;width:100%;min-width:700px;height:auto}.chart-tip[hidden]{display:none!important}@media(max-width:700px){.tabs{gap:10px 18px}.tabs button{font-size:12px}.drill-question h3{font-size:20px}.image-lightbox{padding:12px}.drill-answer{padding:1px 12px}}
.spacing-status{background:#e9eeda;border:1px solid #d4dfbd;padding:13px 16px;margin:16px 0;color:var(--green);font-size:13px;line-height:1.8}.spacing-rules{font-size:12px;color:var(--muted);margin:12px 0}.spacing-rules summary{cursor:pointer}.spacing-rules p{max-width:640px}.drill-rate .rate small{margin-top:3px;font-size:10px;white-space:normal;line-height:1.4}
.drill-context{margin:16px 0 24px;padding:16px 20px;border:1px solid var(--line);background:#fafbf5;overflow-wrap:anywhere}.drill-context .markdown>:first-child{margin-top:0}.drill-context .markdown>:last-child{margin-bottom:0}.drill-context pre{max-width:100%;overflow-x:auto}.selftest-item{margin:24px 0}.selftest-item .drill-context{margin-bottom:10px}@media(max-width:700px){.drill-context{padding:12px}.drill-context pre{font-size:12px}}