.nv-chapter-intro{display:grid;grid-template-columns:1.25fr 1fr;align-items:center;gap:1.3rem;margin:1.4rem 0 2rem;padding:1rem;border:1px solid #cbdccd;border-radius:18px;background:#f1f7ea;overflow:hidden}
.nv-chapter-intro img{display:block;width:100%;height:auto;aspect-ratio:3/1;object-fit:cover;border-radius:12px}
.nv-chapter-intro p{margin:.3rem 0 .8rem}.nv-chapter-intro strong{font-size:1.2rem}
.negative-lab,.real-data-lab{padding:1rem;background:#fcfef9;border:1px solid #d4e2d1;border-radius:14px;margin:1rem 0}
.nv-controls{display:flex;flex-wrap:wrap;align-items:end;gap:.7rem;margin:.9rem 0}.nv-controls label{display:flex;flex-direction:column;gap:.3rem}.nv-controls input{max-width:12rem}
.nv-controls button,.negative-lab button,.real-data-lab button{min-height:44px}.negative-lab select{max-width:100%}
.nv-reference{padding:.8rem;border-left:4px solid #286c48;background:#edf5e7}.nv-context-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(185px,1fr);align-items:center;gap:1rem}
.nv-context-grid svg,.real-data-lab svg{width:100%;height:auto;display:block}.nv-position-controls label{display:block;margin:1rem 0}.nv-position-controls input[type=range]{display:block;width:100%}
.nv-point-a{color:#216e9b}.nv-point-b{color:#99520e}.nv-position-controls select{display:block;width:100%;margin:.4rem 0}.nv-point-a input{accent-color:#216e9b}.nv-point-b input{accent-color:#a35c14}
.nv-original-line{margin:1rem 0}.nv-expression{font-size:1.2rem;font-weight:700;line-height:1.65;padding:.8rem;background:#edf5e7;border-radius:10px;margin:.8rem 0}
.nv-term-cards{display:flex;flex-wrap:wrap;gap:.7rem}.nv-term{display:flex;flex:1 1 150px;flex-direction:column;gap:.4rem;padding:.85rem;border:2px solid;border-radius:12px}.nv-positive{color:#175579;border-color:#9ec8d9;background:#eef7fc}.nv-negative{color:#83480f;border-color:#dabe92;background:#fff6e8}.nv-done{box-shadow:inset 0 -4px 0 #345b39}
.nv-line-scroll{overflow-x:auto}.nv-line-scroll svg{width:100%;min-width:550px;display:block}.nv-question{border-top:1px solid #cbdccd;margin-top:1.3rem;padding-top:.4rem}.real-data-lab table{width:100%;max-width:30rem}.real-data-lab th,.real-data-lab td{padding:.5rem;text-align:left;border-bottom:1px solid #d4e2d1}.real-data-lab input[type=range]{display:block;width:100%;margin:1rem 0;accent-color:#a35c14}
@media(max-width:700px){.nv-chapter-intro{grid-template-columns:1fr}.nv-context-grid{grid-template-columns:1fr}.nv-position-controls{display:grid;grid-template-columns:1fr 1fr;gap:.7rem}.nv-position-controls p,.nv-position-controls button{grid-column:1/-1}.negative-lab,.real-data-lab{padding:.7rem}.nv-controls>*{max-width:100%}.nv-controls select{max-width:100%}}
@media(prefers-reduced-motion:reduce){.negative-lab *,.real-data-lab *{transition:none!important}}

.nv-mini-row{display:grid;grid-template-columns:65px 1fr 35px;gap:.5rem;align-items:center;margin:.65rem 0;font-size:.9rem}.nv-mini-row>div{border-left:1px solid #34553d;background:#e2ecdd;height:18px}.nv-mini-row i{display:block;height:100%;background:#286c48}.nv-mini-row:nth-child(2) i{background:#216e9b}.nv-mini-row:nth-child(3) i{background:#a35c14}.nv-mini-row:nth-child(4) i{background:#6b5592}

.nv-context-horizontal{overflow-x:auto}.nv-context-horizontal svg{min-width:590px}