.chapter-label{display:flex;gap:.75rem;align-items:center}.chapter-order{font-size:1rem;font-weight:750;color:#647460}.catalogue-intro{max-width:65ch}.chapter-ppts{margin:2.5rem 0;padding:1.4rem;background:#fff;border:1px solid #cadcc6;border-radius:10px;scroll-margin-top:1rem}.chapter-resource-heading{display:flex;align-items:center;justify-content:space-between;gap:1.25rem;flex-wrap:wrap}.chapter-resource-heading h2{margin:0 0 .5rem}.chapter-resource-heading p{margin:0 0 .8rem}.ppt-list{list-style:none;padding:0;margin:1rem 0}.ppt-list li{display:grid;grid-template-columns:2.2rem minmax(0,1fr) auto;gap:1rem;align-items:center;padding:1rem 0;border-top:1px solid #dce6d7}.ppt-number{font-weight:750;color:#315c36}.ppt-title{font-weight:600}.chapter-ppt-link{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid #cfdec5}.chapter-sequence{display:flex;justify-content:space-between;gap:1.25rem;border-top:1px solid #cadcc6;padding-top:1.2rem;margin:2rem 0}.lesson-sequence{display:grid;gap:.8rem;margin-top:1.3rem;padding-top:1.2rem;border-top:1px solid #cadcc6}.lesson-sequence a{font-size:1rem}.chapter-tabs{display:flex}.chapter-ppts:focus-within{outline-offset:4px}@media(max-width:640px){.ppt-list li{grid-template-columns:2rem minmax(0,1fr);gap:.6rem}.ppt-list .button{grid-column:2;justify-self:start}.chapter-resource-heading>.button{width:100%;text-align:center}.chapter-ppts{padding:1rem}.chapter-sequence{flex-wrap:wrap}}

.lesson-reference{display:block;font-weight:650;color:#315c36;font-size:.875rem;margin-bottom:.15rem}.share-notion{display:flex;align-items:center;flex-wrap:wrap;gap:.65rem;margin:.9rem 0}.share-notion input{width:100%;min-width:0;font-size:1rem}.share-notion [hidden]{display:none}

.ppt-formats{display:flex;gap:.5rem;flex-wrap:wrap}@media(max-width:640px){.ppt-formats{grid-column:2}}

/* Printable student practice, shared by the three current topics. */
.student-workbook{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;margin:1.5rem 0;padding:1.5rem;border:1px solid #9ec2af;border-left:5px solid #045334;border-radius:12px;background:#f1f7f3;color:#153d2e}
.student-workbook h2{font-size:1.35rem;margin:0 0 .5rem}.student-workbook p{max-width:42rem;margin:0 0 .6rem}.student-workbook .quiet{font-size:.9rem}.student-workbook>.button{flex-shrink:0;max-width:20rem;text-align:center;white-space:normal}
@media(max-width:720px){.student-workbook{align-items:stretch;flex-direction:column;padding:1.15rem;gap:1rem}.student-workbook>.button{max-width:none}}

/* Exploration leads each chapter; printable resources follow in a stable order. */
.chapter-exploration{margin:1.8rem 0 2.7rem;padding:clamp(1.2rem,3vw,2.4rem);border:1px solid #b9d3c4;border-radius:20px;background:linear-gradient(135deg,#edf6ee,#f8faf5);scroll-margin-top:1rem}
.exploration-heading{display:flex;align-items:center;justify-content:space-between;gap:2rem;margin-bottom:1.6rem}.exploration-heading>div{max-width:650px}.exploration-heading .eyebrow{color:#376852;margin:0 0 .4rem}.exploration-heading h2{font-size:clamp(1.5rem,3vw,2rem);margin:.3rem 0 .8rem;line-height:1.2}.exploration-heading p{margin:.6rem 0 0}.exploration-heading>.button{flex-shrink:0;text-align:center}
.chapter-exploration .compact-lessons{margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem}.chapter-exploration .compact-lessons>li{margin:0}.chapter-exploration .lesson-tile{height:100%;display:grid;grid-template-columns:2rem minmax(0,1fr) auto;align-items:center;gap:.8rem;border:1px solid #c9ddce;border-radius:10px;background:#fff;padding:1.05rem;font-size:1rem}.chapter-exploration .lesson-tile:hover{border-color:#045334;background:#f8fcf8}.lesson-enter{font-size:1.2rem;color:#5c7a68}
.exploration-groups{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.exploration-group{height:100%;display:flex;gap:1rem;background:#fff;border:1px solid #c9ddce;border-radius:12px;padding:1.25rem}.exploration-group h3{margin:0 0 .8rem;line-height:1.4;font-size:1.15rem}.explore-link{font-weight:700}.exploration-related{border-top:1px solid #e0e8e0;margin-top:.9rem;padding-top:.7rem;font-size:.9rem}.exploration-related a{display:block}.more-explorations{margin-top:1.2rem}.more-explorations summary{padding:.6rem 0;font-weight:650}.more-explorations .compact-lessons{margin-top:.7rem}
.chapter-resources-title{font-size:1.45rem;margin:0 0 1rem}.resource-section{border:1px solid #d0ded2;border-radius:12px;padding:0 1.4rem;background:#fff;margin:0 0 .85rem;scroll-margin-top:1.2rem}.resource-section>summary{padding:1.2rem 0;font-size:1.1rem;font-weight:700;cursor:pointer}.resource-section[open]{padding-bottom:1.3rem}.resource-section>h2{font-size:1.25rem;margin:0 0 .8rem}.resource-section .actions{gap:.6rem}.topic-worksheets{margin-top:1.4rem}.topic-worksheets>summary{font-weight:650;padding:.5rem 0;cursor:pointer}
.worksheet-list{list-style:none;margin:1rem 0 0;padding:0}.worksheet-list>li{display:flex;align-items:center;justify-content:space-between;gap:1.2rem;padding:.85rem 0;border-top:1px solid #e3eae1}.worksheet-list .actions{display:flex;flex-shrink:0;gap:1rem}.worksheet-list a{font-size:.95rem}.chapter-extension{padding:1.1rem 1.4rem;border:1px dashed #b4c5b7;border-radius:10px;margin:1.5rem 0}.chapter-extension summary{font-weight:650;cursor:pointer}.chapter-extension .compact-lessons{margin-top:1rem}.chapter-pack{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin:2rem 0;padding:1.25rem 1.5rem;border-radius:12px;background:#f3f0e5}.chapter-pack h3{margin:0 0 .4rem;font-size:1.05rem}.chapter-pack p{margin:0;font-size:.95rem}.chapter-pack>.button{flex-shrink:0}
@media(max-width:760px){.exploration-heading{align-items:stretch;flex-direction:column;gap:1rem}.exploration-heading>.button{align-self:flex-start}.exploration-groups,.chapter-exploration .compact-lessons{grid-template-columns:1fr}.chapter-pack{align-items:stretch;flex-direction:column}.chapter-pack>.button{text-align:center}.chapter-tabs{flex-wrap:wrap;gap:.5rem}.worksheet-list>li{align-items:flex-start;flex-direction:column;gap:.5rem}.resource-section{padding-left:1rem;padding-right:1rem}.exploration-group{padding:1rem}}
.worksheet-overview{display:flex;gap:1.8rem;align-items:flex-start}.worksheet-overview>div{flex:1;min-width:0}.worksheet-preview{flex:0 0 210px;margin:.5rem 0}.worksheet-preview a{text-decoration:none;display:block}.worksheet-preview img{display:block;width:210px;height:auto;border:1px solid #d2dbd2;box-shadow:0 8px 20px #14352a12;border-radius:3px}.worksheet-preview figcaption{font-size:.8rem;line-height:1.4;margin-top:.65rem;color:#51685b}.worksheet-preview a:focus-visible{outline:3px solid #045334;outline-offset:4px}@media(max-width:640px){.worksheet-overview{flex-direction:column;gap:.8rem}.worksheet-preview{flex-basis:auto;align-self:center}.worksheet-preview img{width:170px}.worksheet-preview figcaption{max-width:170px}.worksheet-overview>div{width:100%}}