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.student-preview-bar{background:#e0faf6;border-bottom:2px solid #137f80;padding:12px max(16px,calc((100vw - 1180px)/2));display:flex;align-items:center;justify-content:space-between;gap:12px}.student-preview-bar span{display:block;font-size:.85rem;margin-top:4px}@media(max-width:600px){.student-preview-bar{flex-direction:column;align-items:flex-start}.student-preview-bar .btn{width:100%}}@media print{.student-preview-bar{display:none}}

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18px;min-height:235px;display:flex;flex-direction:column;justify-content:center;gap:16px}.meaning-nodes{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:12px;align-items:stretch}.visual-node{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:0;gap:9px;text-align:center;background:white;padding:16px 11px;border:1px solid #dbe4f1;border-radius:13px;overflow-wrap:anywhere}.visual-token{font-size:1.3rem;line-height:1.35;color:#203a69;display:block}.visual-token.pictogram{font-size:2.45rem}.visual-node>span{font-size:.88rem;font-weight:500;line-height:1.5;color:#425573}.meaning-svg{display:block;width:100%;max-width:450px;height:auto;align-self:center;overflow:visible}.meaning-svg+.meaning-nodes .visual-token{font-size:1.1rem}.layout-flow,.layout-timeline,.layout-family{grid-template-columns:1fr;gap:24px}.layout-flow .visual-node,.layout-timeline .visual-node,.layout-family .visual-node{position:relative;display:grid;grid-template-columns:minmax(55px,.8fr) minmax(0,1.7fr);text-align:left;gap:14px}.layout-flow .visual-node:not(:last-child)::after,.layout-timeline .visual-node:not(:last-child)::after,.layout-family .visual-node:not(:last-child)::after{content:'↓';position:absolute;bottom:-26px;left:50%;color:#5777b9;font-size:22px;line-height:26px}.layout-timeline .visual-node{border-left:5px solid #7097e4}.layout-pair .visual-node:nth-child(2){background:#f0f8f3;border-color:#c6dfd0}.layout-math{grid-template-columns:1fr;gap:7px}.layout-math .visual-node{display:grid;grid-template-columns:1fr 1.5fr;text-align:left;background:transparent;border:0;border-radius:0;padding:10px}.layout-math .visual-node:last-child{border-top:3px solid #335edf;background:#e6edff;border-radius:0 0 9px 9px}.layout-math .visual-token{font-variant-numeric:tabular-nums;font-size:1.65rem}.layout-text{grid-template-columns:1fr}.layout-text .visual-node{align-items:flex-start;text-align:left;border-left:4px solid #e6bc4d;background:#fffdf4}.layout-text .visual-token{font-size:1.16rem}.layout-parts{gap:5px}.layout-parts .visual-node{background:#e4edff;border-bottom:4px solid #8ca9e5}.layout-parts .visual-node:last-child{background:#e1f3e7;border-bottom-color:#7dbc97}.layout-network,.layout-branch{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.layout-network .visual-node:first-child,.layout-branch .visual-node:first-child{grid-column:1/-1;background:#e5edff}.layout-branch .visual-node:not(:first-child){border-top:4px solid #a2b9e4}.layout-set{border:2px dashed #a9bfda;padding:12px;border-radius:16px}.layout-object .visual-node{background:transparent;border:0;padding:13px 5px}.layout-object .pictogram{font-size:3.8rem}.layout-pattern .visual-node{border-bottom:4px solid #e2c15d}.layout-loop{border:2px solid #b4c6e4;border-radius:35px;padding:15px;position:relative}.layout-loop::after{content:'↻ Repeat the cycle';font-size:.9rem;color:#31589a;text-align:center;grid-column:1/-1;padding-top:4px}.quantity-model{display:flex;flex-wrap:wrap;gap:15px;align-items:stretch}.quantity-group{flex:1 1 110px;min-width:0}.counter-set{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;align-content:center;min-height:88px;padding:10px;max-width:190px;margin:auto}.counter-set i,.density-box i{display:block;width:15px;height:15px;background:#3867d9;border-radius:50%;flex-shrink:0}.counter-set span{font-size:2rem;color:#8f9eb8}.quantity-group:nth-child(2n) .counter-set i{background:#c77826}.quantity-group .visual-node{min-height:110px}.bar-model{display:flex;gap:13px;align-items:stretch}.bar-column{flex:1;min-width:0}.bar-space{height:120px;display:flex;align-items:flex-end;justify-content:center;border-bottom:2px solid #aabbd6}.meaning-bar{width:70%;background:#759bed;border-radius:8px 8px 0 0}.bar-column:nth-child(2n) .meaning-bar{background:#77bc95}.bar-column .visual-node{border:0;background:transparent;padding:12px 2px}.bar-column .visual-token{font-size:1.05rem}.fraction-model{display:flex;align-items:center;gap:20px;justify-content:center}.fraction-number{font-size:1.8rem;line-height:1.5;display:grid;text-align:center}.fraction-number span:first-child{border-bottom:3px solid #142440}.fraction-strip{display:grid;grid-template-columns:repeat(var(--pieces),1fr);width:78%;max-width:340px;height:65px;border:2px solid #335edf;overflow:hidden;border-radius:8px}.fraction-strip i{border-right:1px solid #335edf;background:white}.fraction-strip i:last-child{border:0}.fraction-strip i.filled,.percent-model i.filled{background:#4775dc}.percent-model{display:grid;grid-template-columns:repeat(10,1fr);gap:3px;max-width:240px;width:100%;align-self:center}.percent-model i{aspect-ratio:1;border:1px solid #a6bce4;border-radius:2px;background:white}.density-model{display:flex;gap:20px;justify-content:center}.density-box{width:120px;height:100px;display:flex;flex-wrap:wrap;gap:8px;align-content:center;justify-content:center;border:3px solid #9bb8e5;border-radius:8px;background:white}.frequency-model p{font-size:.9rem;line-height:1.5;margin:8px 0 17px}.frequency-row{display:flex;align-items:center;gap:4px;min-height:34px}.frequency-row i{display:block;width:24px;flex:1;max-width:34px;height:24px;background:white;border:2px solid #bac9e3;border-radius:5px}.frequency-row .event{background:#335edf;border-color:#335edf}.frequency-row .continuous{margin-right:-5px;border-radius:0}.frequency-model small{font-size:.8rem;color:#52678b}.spectrum-line{height:18px;width:100%;border-radius:15px;background:linear-gradient(90deg,#7bacdf,#d7e8e9,#f5c47c,#df876d);margin:5px 0 0}.visual-table{border:1px solid #c7d7ee;border-radius:12px;overflow:hidden;background:white}.visual-table>div{display:grid;grid-template-columns:minmax(75px,.8fr) minmax(0,1.3fr);border-bottom:1px solid #d8e4f3}.visual-table>div:last-child{border-bottom:0}.visual-table strong,.visual-table span{padding:14px;font-size:.92rem;line-height:1.5;overflow-wrap:anywhere}.visual-table strong{background:#eaf1fe}.layer-model{display:grid;border:1px solid #aec4e4;border-radius:13px;overflow:hidden}.layer-model .visual-node{border-radius:0;border:0;border-bottom:1px dashed #9cb2d0;display:grid;grid-template-columns:1fr 1.5fr;text-align:left}.layer-model .visual-node:nth-child(2){background:#eef3fd}.layer-model .visual-node:nth-child(3){background:#f5efdf}.palette-model{display:flex;gap:18px;justify-content:center}.palette-model i{width:54px;height:54px;border-radius:50%;background:#db4b49}.palette-model i:nth-child(2){background:#3b67df}.palette-model i:nth-child(3){background:#ffdf59}.underlined-example{font-size:2rem;text-align:center;text-decoration:underline;text-underline-offset:8px;color:#244eaa}.math-equality{text-align:center;font-size:1.8rem;font-weight:750}.place-model{display:flex;justify-content:center;gap:5px}.place-model>div{display:grid;gap:7px;text-align:center;padding:14px 25px;background:#dfe9ff;border:1px solid #a5c1ea;border-radius:9px}.place-model strong{font-size:2.5rem}.spreadsheet-model{display:grid;grid-template-columns:45px 1fr 1fr;max-width:330px;width:100%;align-self:center}.spreadsheet-model>span{border:1px solid #b6c5dc;min-height:42px;display:grid;place-items:center;font-size:.85rem;background:white}.spreadsheet-model .selected{background:#ffeb9a;outline:2px solid #b5821c}.layout-force{grid-template-columns:1fr 1fr}.layout-force .visual-token{font-size:2.2rem}@media(max-width:1050px) and (min-width:761px){.learn-card{grid-template-columns:1fr}.word-illustration{max-height:420px}.meaning-diagram{max-width:650px;width:100%;margin:auto}}@media(max-width:440px){.meaning-diagram{padding:18px 12px}.visual-node{padding:13px 8px}.visual-token{font-size:1.12rem}.visual-node>span{font-size:.88rem}.word-visual figcaption{padding:14px}.meaning-nodes{grid-template-columns:repeat(auto-fit,minmax(100px,1fr))}.layout-flow,.layout-timeline,.layout-family,.layout-math,.layout-text{grid-template-columns:1fr}.bar-model{gap:8px}.visual-table strong,.visual-table span{padding:10px}.image-key{padding:10px}}
.word-visual img{max-width:100%;height:auto}.word-visual svg{max-width:100%;height:auto}
.word-details{display:grid;grid-template-columns:110px minmax(0,1fr);gap:8px 12px;font-size:.9rem;margin:18px 0}.word-details dt{font-weight:700}.word-details dd{margin:0;overflow-wrap:anywhere}

.adventure-heading{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.adventure-heading h2{margin:0}.unit-week-badge{display:inline-flex;padding:8px 13px;border-radius:999px;background:var(--mint);color:var(--teal2);font-size:1rem;font-weight:750;white-space:nowrap}.section-heading{flex-wrap:wrap;gap:12px}

.edit-sentence{font-size:1.05rem;line-height:1.65;padding:12px 16px;background:var(--paper);border-left:4px solid var(--teal);border-radius:8px;white-space:pre-wrap}