.back-button{display:inline-flex;align-items:center;gap:8px;margin:0 0 18px;padding:10px 16px;border:1px solid #d9c4e6;border-radius:999px;background:#fff;color:#4e176d;font:inherit;font-weight:750;cursor:pointer;transition:transform .18s ease,background .18s ease}.back-button:hover{background:#faf4ff;transform:translateX(-2px)}.back-button:focus-visible{outline:3px solid #e5bd36;outline-offset:3px}
.book-source{font-size:.9rem;color:#685374;border-left:3px solid #e5bd36;padding-left:14px}
.lesson-goal{background:#fff4c1;border-radius:12px;padding:12px 18px}.annotated-visual{margin:26px 0;padding:24px;border:1px solid #dbc5ea;border-radius:20px;background:#faf7fd}.annotated-visual h3{margin:8px 0 20px}.visual-pairs{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px}.visual-pairs article{background:#fff;border-radius:14px;border-top:4px solid var(--purple);padding:18px;box-shadow:0 5px 0 #e8daf2}.visual-pairs article:nth-child(even){border-top-color:var(--yellow)}.visual-number{font-size:1.8rem;font-weight:850;color:#b89ec9}.visual-pairs h4{margin:8px 0;font-size:1.1rem}.visual-pairs p{margin:0;font-size:.96rem}.notebook-task{background:#fff8db;border-radius:18px;padding:22px;margin:24px 0}.self-check{display:flex;align-items:flex-start;gap:12px;font-size:.95rem}.self-check input{width:20px;height:20px;flex-shrink:0;accent-color:var(--purple);margin-top:5px}
.book-sheet{padding:clamp(20px,4vw,38px)}.book-spread.illustrated{display:grid;grid-template-columns:minmax(230px,.9fr) minmax(280px,1.1fr);gap:32px;align-items:start}
.story-figure{margin:0}.story-crop{overflow:hidden;border-radius:16px;background:#e9e0ef}.book-sheet .story-crop img{display:block;width:300%;max-width:none;border-radius:0;height:auto}.story-figure figcaption{font-size:.87rem;line-height:1.5;color:#685374;margin-top:12px}
.book-reading{font-size:1.12rem;line-height:1.8}.book-reading>p{margin:0 0 20px;max-width:55ch}.book-reading .example{font-size:1rem}.book-reading .example p{margin:6px 0 0}
.look-prompt{background:#f3edf8;padding:14px 18px;border-radius:12px}.book-anchor{font-size:.9rem;color:#685374}.word-help{padding:16px 20px;background:#faf6ff;border-radius:14px}.word-help dt{font-weight:750}.word-help dd{margin:4px 0 16px}
.memory-notes{list-style:none;counter-reset:memory;padding:0;display:grid;gap:12px}.memory-notes[hidden]{display:none}.memory-notes li{counter-increment:memory;display:flex;gap:16px;align-items:center;padding:18px;background:#faf6ff;border:1px solid #e7d9f1;border-radius:14px;font-size:1.1rem}.memory-notes li:before{content:counter(memory);display:grid;place-items:center;background:var(--yellow);border-radius:50%;min-width:34px;height:34px;font-weight:800}
.lesson-map{margin:28px 0;padding:22px;border-radius:20px;background:linear-gradient(135deg,#f5edfb,#fff8dc);border:1px solid #e4d5ee}.lesson-map figcaption{display:flex;justify-content:space-between;gap:18px;align-items:baseline;color:#4e176d}.lesson-map figcaption span{font-size:.9rem;color:#685374}.lesson-map .diagram{margin:18px 0 0;align-items:stretch}.lesson-map .diagram span{position:relative;display:flex;align-items:center;gap:10px;flex:1;min-width:150px;background:#fff;border:2px solid #d7bce8;box-shadow:0 6px 0 #eadcf2}.lesson-map .diagram span b{display:grid;place-items:center;flex:0 0 30px;height:30px;border-radius:50%;background:var(--purple);color:#fff}.lesson-map .diagram span:not(:last-child):after{content:'→';position:absolute;right:-18px;color:#8b55ad;font-size:22px;font-weight:900}
.recall-card{border-top:1px solid #e6ddeb;padding:12px 0}.recall-card details{background:#fff8d9;padding:12px 18px;border-radius:12px}
@media(max-width:700px){.book-spread.illustrated{grid-template-columns:1fr;gap:20px}.story-figure{max-width:380px;margin:0 auto}.book-reading{font-size:1.05rem}.memory-notes li{padding:14px}.lesson-map figcaption{display:block}.lesson-map figcaption span{display:block;margin-top:5px}.lesson-map .diagram{display:grid}.lesson-map .diagram span:not(:last-child):after{content:'↓';right:auto;bottom:-23px;left:50%;}}
@media print{#memoryNotes[hidden]{display:grid!important}#memoryToggle,.recall-card{display:none}.book-source{border:0}.memory-notes li{break-inside:avoid}}