.library-page .page-heading { margin-bottom: 22px; }
.library-inventory { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 28px; margin: 0 0 28px; }
.library-inventory>span { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font-size: 12px; }
.library-inventory strong { color: var(--ink); font-size: 16px; }
.library-inventory .ui-icon { width: 17px; height: 17px; color: var(--action); }
.library-inventory>p { flex-basis: 100%; margin: 0; color: var(--muted); font-size: 12px; }
.library-topic-card { border-top: 3px solid var(--level-accent); }
.library-topic-card .card-topline { align-items: center; }
.library-topic-card .topic-skills { font-size: 11px; font-weight: 650; color: var(--area-ink,var(--muted)); margin-bottom: 18px; }
.page-backlink { margin: 24px 0 0; }
.page-backlink .button-link { flex-direction: row-reverse; }
.topic-overview { display: flex; align-items: start; gap: 25px; padding: 30px; margin: 24px 0 34px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); }
.topic-overview>div { min-width: 0; }
.topic-overview .overview-icon { width: 78px; height: 84px; border-radius: 20px; margin-top: 4px; }
.topic-overview .overview-icon .ui-icon { width: 38px; height: 38px; }
.topic-overview .page-heading { margin: 0 0 22px; }
.topic-overview .page-heading h1 { margin-top: 10px; font-size: clamp(28px,3vw,42px); }
.topic-overview .badges { margin: 0; }
.topic-activities { grid-template-columns: repeat(2,minmax(0,1fr)); }
.topic-activities .catalog-card { padding: 28px; }
.topic-activities .catalog-card h3 { font-size: 22px; }
.topic-page>.mechanics-grid { margin-bottom: 28px; }
.setup-activity-meta { margin-bottom: 26px; }
.setup-layout { display: grid; grid-template-columns: minmax(0,1.35fr) minmax(280px,1fr); align-items: start; gap: 24px; }
.setup-layout>.info-panel { margin: 0; min-width: 0; }
.setup-form { padding: 28px; }
.setup-panel-heading { display: flex; align-items: start; gap: 14px; margin-bottom: 26px; }
.setup-panel-heading>div { min-width: 0; }
.setup-panel-heading h2 { margin: 2px 0 6px; }
.setup-panel-heading p { font-size: 12px; color: var(--muted); margin: 0; }
.setup-panel-heading .eyebrow { font-size: 9px; color: var(--action); margin-bottom: 6px; }
.setup-panel-icon { display: grid; place-items: center; flex-shrink: 0; width: 46px; height: 46px; background: var(--indigo-soft); color: var(--action); border-radius: 13px; }
.setup-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; margin-bottom: 24px; }
.team-inputs { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px 16px; padding-top: 24px; border-top: 1px solid var(--line); }
.team-inputs>.field { position: relative; padding-left: 39px; }
.team-inputs .team-input-marker { position: absolute; left: 0; top: 30px; display: grid; place-items: center; width: 28px; height: 28px; border-radius: 9px; background: var(--team-soft); color: var(--team-color); font-size: 12px; font-weight: 800; margin: 0; }
.team-inputs input { border-left: 3px solid var(--team-color); }
.setup-form>.small-text { margin: 24px 0 20px; }
.setup-start { width: 100%; }
.teacher-preparation { background: #f2f3ff; border-color: #e0dff6; }
.teacher-preparation>p,.teacher-preparation li { font-size: 13px; color: #43506b; }
.teacher-preparation ol { padding-left: 22px; margin: 20px 0; }
.teacher-preparation .teacher-preparation-note { display: flex; align-items: start; gap: 10px; border-top: 1px solid #d9dbef; padding-top: 18px; margin: 20px 0 0; font-size: 12px; }
.teacher-preparation-note .ui-icon { margin-top: 3px; width: 17px; height: 17px; color: var(--action); }
.setup-answer-key { margin-top: 28px; }
.setup-answer-key summary { color: var(--ink); font-size: 15px; }
.answer-preview { padding: 24px 0; border-top: 1px solid var(--line); overflow-wrap: anywhere; }
.answer-preview:last-child { padding-bottom: 0; }
.answer-preview h3 { color: var(--action); font-size: 15px; margin: 0 0 12px; }
.answer-preview p,.answer-preview li { font-size: 13px; }
.answer-preview blockquote { margin: 16px 0; padding: 14px 18px; border-left: 3px solid var(--indigo); background: var(--indigo-soft); border-radius: 0 10px 10px 0; }
@media(max-width:1100px) {
  .setup-layout { grid-template-columns: minmax(0,1fr); }
  .teacher-preparation { padding: 25px 28px; }
}
@media(max-width:600px) {
  .library-inventory { gap: 10px 18px; }
  .library-inventory>span { flex-wrap: wrap; font-size: 11px; gap: 6px; }
  .topic-overview { flex-direction: column; padding: 24px; gap: 20px; }
  .topic-overview .overview-icon { width: 58px; height: 62px; border-radius: 16px; margin-top: 0; }
  .topic-overview .overview-icon .ui-icon { width: 29px; height: 29px; }
  .topic-overview .page-heading h1 { font-size: 30px; }
  .topic-activities { grid-template-columns: minmax(0,1fr); }
  .topic-activities .catalog-card { padding: 24px; }
  .setup-form,.teacher-preparation { padding: 22px; }
  .setup-panel-heading { gap: 12px; }
  .setup-panel-heading h2 { font-size: 20px; }
  .setup-grid,.team-inputs { grid-template-columns: minmax(0,1fr); }
  .team-inputs { gap: 17px; }
  .setup-answer-key { padding: 20px; }
}