/* Anker 3: the next layer only appears when it helps. */
.t-modes{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:20px 0 28px}.t-mode{display:flex;align-items:center;gap:12px;text-align:left;border:1px solid var(--line);border-radius:16px;background:var(--panel);padding:17px 14px;min-width:0;color:var(--text)}.t-mode:hover{border-color:var(--accent-deep)}.t-mode>span:nth-child(2){flex:1;min-width:0}.t-mode strong,.t-mode small{display:block}.t-mode strong{font-size:12px;font-weight:600}.t-mode small{font-size:10px;color:var(--muted);margin-top:3px}.t-mode>.icon{width:14px;flex-shrink:0}.t-mode .topic-icon{width:33px;height:33px;flex-shrink:0}.t-focus{max-width:1020px}.t-card{margin-bottom:18px;min-height:0}.t-card h1{font-size:27px;line-height:1.45;letter-spacing:-.65px;margin-bottom:10px;max-width:100%}.t-task-note{font-size:12px;color:var(--muted);margin:5px 0 22px}.t-options{display:grid;gap:10px}.t-option{display:flex;align-items:center;gap:15px;text-align:left;width:100%;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:var(--panel);color:var(--text);font-family:inherit;line-height:1.6;transition:border-color .15s,background .15s;min-height:67px}.t-option:not(:disabled):hover{background:var(--subtle);border-color:#a1b28d}.t-option.selected{border-color:var(--accent-deep);background:var(--subtle);box-shadow:0 0 0 1px var(--accent-deep)}.t-option:disabled{opacity:1;cursor:default}.t-option.dimmed{opacity:.62}.t-letter{display:grid;place-items:center;width:29px;height:29px;flex:0 0 29px;border:1px solid var(--line);border-radius:8px;color:var(--muted);font-size:11px;font-weight:600}.selected .t-letter{color:var(--accent-deep);border-color:var(--accent-deep)}.t-option-text{flex:1;min-width:0;font-size:14px;overflow-wrap:anywhere}.t-option-mark{width:18px;flex:0 0 18px}.t-option-mark .icon{width:18px;height:18px;color:var(--accent-deep)}.t-option.right{border-color:var(--accent-deep);background:var(--subtle);box-shadow:none}.t-option.wrong{border-color:var(--amber);background:var(--amber-bg);box-shadow:none}.wrong .t-option-mark .icon{color:var(--amber)}.t-sr{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.t-confidence{margin:27px 0 0;padding:20px 0 0;border:0;border-top:1px solid var(--line)}.t-confidence legend{float:left;padding:0;font-size:12px;font-weight:600;width:100%;margin-bottom:12px}.t-confidence-options{clear:both;display:flex;gap:7px;flex-wrap:wrap}.t-confidence-options button{background:var(--bg);border:1px solid var(--line);border-radius:9px;padding:10px 18px;color:var(--muted);font-size:12px;min-height:40px}.t-confidence-options button.active{background:var(--subtle);border-color:var(--accent-deep);color:var(--accent-deep)}.t-confidence p{font-size:11px;color:var(--muted);margin:10px 0 0}.t-check{display:flex;align-items:center;gap:19px;margin-top:22px}.t-feedback{border-top:1px solid var(--line);padding-top:27px;margin-top:26px}.t-feedback-heading{display:flex;align-items:center;gap:12px}.t-feedback-heading h2{font-size:19px;letter-spacing:-.3px;flex:1}.t-feedback-heading>.tiny{color:var(--muted)}.t-feedback-icon{display:grid;place-items:center;width:33px;height:33px;background:var(--subtle);border-radius:50%;color:var(--accent-deep)}.incorrect .t-feedback-icon{background:var(--amber-bg);color:var(--amber)}.t-feedback>p{font-size:14px;line-height:1.85;margin-top:15px}.t-feedback .t-evidence{font-size:11px}.t-feedback .t-calibration{display:flex;align-items:flex-start;gap:10px;border-radius:11px;background:var(--amber-bg);padding:14px;font-size:12px;color:var(--amber)}.t-calibration .icon{flex:0 0 18px;margin-top:2px}.t-rationales{margin-top:18px;border-top:1px solid var(--line);padding-top:14px;font-size:12px}.t-rationales summary{cursor:pointer;display:flex;align-items:center;gap:7px;color:var(--accent-deep);list-style:none}.t-rationales summary .icon{width:14px}.t-rationales[open] summary .icon{transform:rotate(90deg)}.t-rationales>div{margin-top:15px;padding:12px;border-radius:9px;background:var(--subtle)}.t-rationales>div p{font-size:12px;margin-top:6px;line-height:1.8}.t-sources a{color:var(--accent-deep);text-decoration:underline;text-underline-offset:3px}.t-sources a .icon{width:13px;vertical-align:middle}.t-lower{display:flex;align-items:center;gap:24px;justify-content:center;flex-wrap:wrap;margin:22px 0 12px}.t-lower .text-btn{font-size:12px}.t-reason{text-align:center;color:var(--muted);font-size:11px;margin-top:9px}.t-error{background:var(--amber-bg);padding:17px;border:1px solid var(--amber);border-radius:12px;max-width:700px;margin:12px auto;text-align:center}.t-error p{margin-bottom:12px;font-size:13px}.t-space{margin-top:15px}.t-progress-teaser{display:flex;align-items:center;gap:22px;padding:27px;margin-bottom:25px}.t-progress-teaser>div{flex:1}.t-progress-teaser p:not(.eyebrow){font-size:12px;margin-top:9px}.t-progress-teaser h2{font-size:23px}.t-skill-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:20px 0 25px}.t-skill-summary>div{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:20px}.t-skill-summary strong{font-size:30px;display:block;font-weight:550}.t-skill-summary span{font-size:12px;color:var(--muted)}.t-mistakes{padding:27px;margin-bottom:28px}.t-mistakes h2{font-size:21px}.t-mistake-list{margin:10px 0 19px}.t-mistake-list article{padding:19px 0;display:flex;gap:15px;align-items:center;border-bottom:1px solid var(--line)}.t-mistake-list article>div{flex:1;min-width:0}.t-mistake-list strong{font-size:13px;overflow-wrap:anywhere}.t-mistake-list p{font-size:12px;margin-top:5px}.t-mistake-list details{font-size:12px;margin-top:9px}.t-mistake-list summary{cursor:pointer;color:var(--accent-deep)}.t-skill-tools{display:flex;align-items:center;gap:20px;margin-bottom:15px;flex-wrap:wrap}.t-skill-tools .search-wrap{flex:1;min-width:220px}.t-skill-tools .checkbox{font-size:12px}.t-skills-list{display:grid;gap:9px}.t-concept{border:1px solid var(--line);border-radius:15px;background:var(--panel);overflow:hidden}.t-concept>summary{display:flex;gap:15px;align-items:center;justify-content:space-between;padding:19px 21px;cursor:pointer;list-style:none}.t-concept>summary::-webkit-details-marker{display:none}.t-concept>summary strong{font-size:13px;display:block}.t-concept>summary small{font-size:10px;display:block;color:var(--muted);margin-top:3px}.t-concept-overview{display:flex;align-items:center;gap:15px;color:var(--muted);font-size:11px}.t-concept-overview .icon{width:15px}.t-concept[open] .t-concept-overview .icon{transform:rotate(90deg)}.t-concept-body{border-top:1px solid var(--line);padding:22px}.t-dimensions{display:grid;grid-template-columns:repeat(4,1fr);gap:11px}.t-dimension{border-radius:11px;padding:14px;background:var(--bg)}.t-dimension>span{font-size:11px;color:var(--muted);display:block}.t-dimension>strong{display:block;font-size:12px;font-weight:550;margin:7px 0}.t-dimension>small{font-size:10px;color:var(--muted);line-height:1.7}.t-dimension.fragile{background:var(--amber-bg)}.t-dimension.practiced{background:var(--subtle)}.t-concept-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:20px}.t-method{padding:28px;margin-top:27px}.t-method h2{font-size:21px}.t-method>p{margin-top:8px;font-size:12px}.t-method details{font-size:12px;line-height:1.85}.t-method details p{margin-top:13px}.t-method summary{cursor:pointer;color:var(--accent-deep)}.t-calibration-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:23px 0}.t-calibration-grid>div{background:var(--bg);border-radius:10px;padding:14px}.t-calibration-grid span,.t-calibration-grid small{display:block;color:var(--muted);font-size:11px}.t-calibration-grid strong{display:block;font-size:21px;font-weight:500;margin:4px 0}.t-card button:focus-visible,.t-mode:focus-visible{outline:3px solid var(--accent-deep);outline-offset:3px}
@media(max-width:1150px){.t-modes{grid-template-columns:repeat(2,minmax(0,1fr))}.t-mode strong{font-size:13px}}
@media(max-width:620px){.t-modes{gap:8px;margin:15px 0 25px}.t-mode{padding:12px;gap:8px;min-height:79px;border-radius:13px}.t-mode .topic-icon{width:25px;height:25px}.t-mode .topic-icon .icon{width:17px;height:17px}.t-mode>.icon{display:none}.t-mode strong{font-size:11px}.t-mode small{font-size:9px}.t-card{padding:24px 19px}.t-card h1{font-size:22px;line-height:1.5}.t-task-note{font-size:11px;margin-bottom:17px}.t-option{padding:13px 11px;gap:10px;border-radius:12px}.t-option-text{font-size:13px;line-height:1.6}.t-letter{width:24px;height:24px;flex-basis:24px;font-size:10px}.t-option-mark{width:14px;flex-basis:14px}.t-option-mark .icon{width:14px}.t-confidence-options{gap:6px}.t-confidence-options button{padding:10px 12px;font-size:11px;flex:1}.t-confidence p{font-size:10px}.t-check{display:block}.t-check .btn{width:100%}.t-check>span{display:block;text-align:center;margin-top:12px}.t-lower{gap:17px}.t-lower>.btn{width:100%}.t-reason{font-size:10px}.t-feedback-heading h2{font-size:17px}.t-feedback-heading>.tiny{display:none}.t-feedback>p{font-size:13px}.t-feedback-icon{width:29px;height:29px;flex:0 0 29px}.t-progress-teaser{padding:21px;display:block}.t-progress-teaser>.btn{margin-top:20px}.t-skill-summary{gap:8px}.t-skill-summary>div{padding:15px 12px;border-radius:13px}.t-skill-summary strong{font-size:25px}.t-skill-summary span{font-size:9px}.t-mistakes{padding:20px}.t-mistakes h2{font-size:18px}.t-mistake-list article{display:block}.t-mistake-list .btn{margin-top:13px}.t-skill-tools{gap:12px}.t-skill-tools .search-wrap{min-width:100%;flex-basis:100%}.t-concept>summary{padding:16px;gap:9px}.t-concept>summary strong{font-size:12px}.t-concept-overview{font-size:9px;gap:6px;flex:0 0 auto;max-width:93px}.t-concept-body{padding:16px}.t-dimensions{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.t-dimension{padding:12px}.t-dimension>strong{font-size:11px}.t-dimension>span{font-size:10px}.t-dimension>small{font-size:9px}.t-method{padding:20px}.t-method h2{font-size:18px}.t-calibration-grid{gap:7px}.t-calibration-grid>div{padding:12px 9px}.t-calibration-grid span,.t-calibration-grid small{font-size:9px}.t-calibration-grid strong{font-size:18px}.t-concept-actions{gap:15px}}