/* Beginner lesson additions use the existing lab palette and local fonts. */
.learning-ribbon{display:flex;align-items:center;justify-content:space-between;gap:12px;border-block:1px solid var(--line);padding:17px 8px;margin-bottom:24px;font-size:16px;color:var(--ink)}
.learning-ribbon b{color:var(--accent);font-weight:400}.lesson-index-head{display:flex;justify-content:space-between;gap:25px}.lesson-count{font:32px var(--mono);color:var(--accent);white-space:nowrap}.lesson-count span{display:block;font:12px/1.7 "Microsoft YaHei",sans-serif;color:var(--muted);margin-top:10px}
.lesson-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:24px 0}.lesson-tile{display:flex;flex-direction:column;padding:24px;border:1px solid var(--line);border-radius:10px;background:var(--panel);text-decoration:none;color:var(--ink);min-width:0}.lesson-tile:hover{border-color:var(--accent)}.lesson-tile h2{font-size:21px;margin:13px 0 10px}.lesson-tile p{color:var(--muted);font-size:15px;flex:1}.lesson-go{font-size:13px;color:var(--cyan)}
.lesson-route{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;margin-bottom:20px;font-size:13px}.plain-sentence{border-top:3px solid var(--accent)}.plain-sentence p{font-size:22px;line-height:1.65;margin-top:10px}.example-sheet{border-left:3px solid var(--cyan)}.expected-note{padding:12px 16px;border-left:2px solid var(--cyan);background:#25d7d009}.quick-quiz{border:0;border-top:1px solid var(--line);padding:20px 0 5px;margin:20px 0;min-width:0}.quick-quiz legend{font-weight:700;max-width:100%;padding:0 10px 0 0}.quiz-option{display:flex;align-items:flex-start;gap:12px;border:1px solid var(--line);border-radius:8px;padding:12px 15px;margin:9px 0;font-size:15px;cursor:pointer}.quiz-option:hover{border-color:var(--accent)}.quiz-option:has(input:checked){background:#ff8d7510;border-color:var(--accent)}.quiz-option input{margin-top:6px;flex-shrink:0;accent-color:var(--accent);width:17px;height:17px}.quiz-feedback{font-size:14px;padding:12px 15px;color:var(--muted);min-height:50px}.quiz-feedback.correct{border-left:3px solid var(--cyan);color:var(--ink)}.quiz-feedback.rethink{border-left:3px solid var(--accent);color:var(--ink)}
.finish-card{border-style:dashed}.finish-card p{font-size:18px;margin-top:10px}.primer-jumps{margin-bottom:25px}.primer-card{scroll-margin-top:90px}.primer-plain{color:var(--cyan)}.simple-glossary{display:grid;grid-template-columns:1fr 1fr;gap:15px 30px}.simple-glossary div{border-top:1px solid var(--line);padding-top:12px}.simple-glossary dt{font-weight:700;font-size:15px}.simple-glossary dd{margin:5px 0 0;font-size:14px;color:var(--muted)}.track-switch{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:18px 0}.track-switch button[aria-pressed=true]{border-color:var(--accent);color:var(--accent)}.track-switch span{font-size:12px;color:var(--muted)}.transfer-card{border-top:3px solid var(--cyan)}.original-task{margin:20px 0}.original-task summary{cursor:pointer;color:var(--muted);padding:16px;border:1px solid var(--line);border-radius:8px}.original-task article{margin-top:12px}.foundation-home{margin-bottom:22px}.theory-shortcut{font-size:13px;color:var(--muted);margin-top:14px}.theory-shortcut a{white-space:nowrap}
@media(max-width:760px){.lesson-grid{grid-template-columns:1fr}.lesson-index-head{display:block}.lesson-count{display:block;font-size:26px;margin-top:20px}.lesson-count span{display:inline;margin-left:12px}.learning-ribbon{font-size:13px;gap:5px}.plain-sentence p{font-size:20px}.simple-glossary{grid-template-columns:1fr}.lesson-tile{padding:21px}.quick-quiz{padding-inline:0}.quiz-option{padding:11px}.primer-jumps .button{font-size:12px}}
@media print{.lesson-route,.lesson-go,.primer-jumps,.track-switch{display:none}.lesson-grid,.simple-glossary{grid-template-columns:1fr}.lesson-tile,.expected-note,.quiz-option:has(input:checked){background:#fff}.learning-ribbon,.plain-sentence{color:#111}.quick-quiz,.example-sheet{break-inside:avoid}.quiz-feedback{color:#333}}