/* Calm reading surfaces share the existing BCZ palette and typography. */
.learning-cover{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--soft)}
.learning-page{max-width:1180px;margin:0 auto;min-width:0}.learning-heading{margin-bottom:28px}.learning-heading h1{font-size:28px;line-height:1.4;margin:8px 0 12px}.learning-heading p{color:var(--muted);max-width:700px;line-height:1.8}.learning-start{display:grid;grid-template-columns:1.3fr 1fr;gap:24px;margin-bottom:36px}.learning-handbook,.learning-guide{padding:28px;border:1px solid var(--line);border-radius:12px;background:var(--white)}.learning-handbook{border-top:4px solid var(--navy,#203a65)}.learning-start h2{font-size:22px;margin:10px 0 16px}.learning-start p{line-height:1.8;margin-bottom:24px}.learning-guide{background:var(--soft)}.learning-courses{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:20px 0 32px}.learning-course{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--white);min-width:0;display:flex;flex-direction:column}.learning-course-number{background:#edf1f6;color:#233e67;padding:20px 24px;display:flex;justify-content:space-between;align-items:center;font-size:28px;font-weight:600}.learning-course-number span{font-size:12px;font-weight:400;letter-spacing:2px}.learning-course-body{padding:24px;display:flex;flex-direction:column;flex:1}.learning-course h3{font-size:18px;line-height:1.5;margin:16px 0 12px}.learning-course p{font-size:14px;color:var(--muted);line-height:1.7;flex:1;margin-bottom:24px}.learning-course button{align-self:start}.learning-meta{display:flex;gap:12px;justify-content:space-between;font-size:12px;color:var(--muted)}.learning-reader-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:24px}.learning-reader-heading span{font-size:13px;color:var(--muted)}#learning-reader>h1{font-size:26px;line-height:1.5;margin:12px 0}#learning-reader>p{color:var(--muted);margin-bottom:24px}.learning-reader-layout{display:grid;grid-template-columns:minmax(0,1fr) 256px;gap:24px;align-items:start}.learning-media,.learning-outline{padding:24px;background:var(--white);border:1px solid var(--line);border-radius:12px;min-width:0}.learning-media video{display:block;width:100%;max-height:65vh;background:#152236;border-radius:6px}.learning-media .form-actions{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px}.learning-outline h2{font-size:18px;margin:0 0 16px}.learning-outline h3{font-size:15px;margin:28px 0 12px}.learning-chapter{display:flex;width:100%;gap:12px;align-items:baseline;text-align:left;background:transparent;color:var(--ink);border:0;min-height:44px;padding:12px;border-radius:6px;font-weight:400;line-height:1.6}.learning-chapter span{font-size:12px;color:var(--muted);flex-shrink:0}.learning-chapter:hover,.learning-chapter.current{background:var(--soft);color:#203a65}.learning-outline details{margin-top:24px;border-top:1px solid var(--line);padding-top:20px}.learning-outline form{margin-top:16px}.learning-pdf-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}.learning-pdf-toolbar label{display:flex;align-items:center;gap:8px;margin:0}.learning-pdf-toolbar input{width:70px}.learning-pdf-toolbar select{width:auto}.learning-canvas-wrap{overflow:auto;max-height:70vh;background:var(--soft);padding:12px;min-width:0}.learning-canvas-wrap canvas{display:block;margin:auto}.learning-config{padding:20px 0;border-top:1px solid var(--line)}.learning-config summary{font-size:16px;font-weight:600;line-height:1.6}.learning-config form{margin-top:24px;max-width:760px}.learning-config fieldset{max-height:250px;overflow:auto}.learning-records{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.learning-records p{margin:0;padding:16px;background:var(--soft);border-radius:8px}#learning-save{font-size:13px;line-height:1.8;min-height:24px}.learning-page [hidden]{display:none!important}
@media(max-width:1100px){.learning-courses{grid-template-columns:repeat(2,minmax(0,1fr))}.learning-reader-layout{grid-template-columns:minmax(0,1fr)}.learning-outline{display:block}.learning-start{gap:20px}.learning-handbook,.learning-guide{padding:24px}}
@media(max-width:760px){.learning-heading h1{font-size:24px}.learning-start,.learning-courses,.learning-records{grid-template-columns:minmax(0,1fr)}.learning-start{margin-bottom:28px}.learning-handbook,.learning-guide,.learning-course-body,.learning-media,.learning-outline{padding:20px}.learning-course-number{padding:16px 20px}.learning-reader-layout{gap:20px}.learning-pdf-toolbar{gap:8px}.learning-pdf-toolbar button{padding:10px 12px}.learning-pdf-toolbar input{width:60px}.learning-media .form-actions>button{width:100%}#learning-reader>h1{font-size:23px}.learning-canvas-wrap{padding:6px}}

.learning-assignment{padding:8px 12px;background:var(--soft);border-left:3px solid var(--navy,#203a65);font-size:14px}.learning-assignment-panel form{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;align-items:end}.learning-assignment-panel form [role=status]{grid-column:1/-1}.learning-task-filter{display:block;max-width:480px;margin:16px 0}.learning-assignment-panel>p:has([data-cancel-learning]){padding:16px;border:1px solid var(--line);border-radius:8px;line-height:1.8}.learning-assignment-panel [data-cancel-learning]{margin-left:12px}.learning-assignment-panel [hidden]{display:none!important}@media(max-width:760px){.learning-assignment-panel form{grid-template-columns:1fr}.learning-assignment-panel [data-cancel-learning]{display:block;margin:8px 0 0;min-height:44px}}