#teacher-upload-manager-bridge.tump-section {
  width: min(1180px, calc(100% - 2rem));
  margin: 2rem auto;
  padding: 1.25rem;
  border: 1px solid #dfe3ec;
  border-radius: 18px;
  color: #172033;
  background: #fff;
  box-shadow: 0 12px 36px rgba(0, 0, 70, .07);
}
.tump-section-heading { display: flex; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.tump-section-heading h2 { margin: .18rem 0 .2rem; color: #000091; font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.35rem, 2.6vw, 2rem); }
.tump-section-heading p { margin: 0; color: #5f687a; font-size: .9rem; line-height: 1.5; }
.tump-kicker { color: #e1000f; font-size: .72rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.tump-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1rem; }
.tump-card { min-width: 0; overflow: hidden; border: 1px solid #e0e4ed; border-radius: 14px; background: #fff; }
.tump-resource-card { display: grid; align-content: start; gap: .65rem; padding: 1rem; }
.tump-card-meta { display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.tump-level, .tump-type { display: inline-flex; width: max-content; border-radius: 999px; padding: .28rem .55rem; font-size: .7rem; font-weight: 850; }
.tump-level { color: #fff; background: #e1000f; }
.tump-type { color: #000091; background: #eef0ff; text-transform: capitalize; }
.tump-card h3 { margin: 0; color: #172033; font-size: 1rem; }
.tump-card p { margin: 0; color: #626c7e; font-size: .84rem; line-height: 1.55; }
.tump-tags { display: flex; flex-wrap: wrap; gap: .35rem; }
.tump-tags span { border-radius: 999px; padding: .22rem .46rem; color: #536075; background: #f0f2f6; font-size: .67rem; }
.tump-action { min-height: 40px; display: inline-flex; align-items: center; justify-content: center; width: max-content; border: 1px solid #000091; border-radius: 9px; padding: .55rem .8rem; color: #fff; background: #000091; font: inherit; font-size: .78rem; font-weight: 850; text-decoration: none; cursor: pointer; }
.tump-action:hover { color: #fff; background: #000078; }
.tump-book-card { display: grid; grid-template-rows: 210px auto; }
.tump-book-card > img, .tump-cover-fallback { width: 100%; height: 210px; object-fit: cover; background: #eef0ff; }
.tump-cover-fallback { display: grid; place-items: center; align-content: center; gap: .7rem; padding: 1.2rem; text-align: center; color: #000091; }
.tump-cover-fallback span { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: #e1000f; font-weight: 850; }
.tump-cover-fallback strong { font-family: Georgia, "Times New Roman", serif; font-size: 1.2rem; line-height: 1.25; }
.tump-card-body { display: grid; align-content: start; gap: .65rem; padding: 1rem; }
.tump-dialog-backdrop { position: fixed; inset: 0; z-index: 9999; display: grid; place-items: center; padding: 1rem; background: rgba(11, 18, 38, .72); }
.tump-book-dialog { width: min(1080px, 100%); max-height: min(840px, calc(100vh - 2rem)); overflow: hidden; border-radius: 16px; color: #172033; background: #fff; box-shadow: 0 30px 90px rgba(0, 0, 40, .28); }
.tump-book-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.2rem; border-bottom: 1px solid #e1e5ed; }
.tump-book-header > div { display: flex; align-items: center; gap: .7rem; }
.tump-book-header h2 { margin: 0; color: #000091; font-family: Georgia, "Times New Roman", serif; font-size: 1.35rem; }
.tump-close { border: 1px solid #cbd2e0; border-radius: 8px; padding: .5rem .7rem; color: #000091; background: #fff; font: inherit; font-size: .75rem; font-weight: 800; cursor: pointer; }
.tump-book-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); height: min(700px, calc(100vh - 110px)); }
.tump-chapter-nav { overflow: auto; display: grid; align-content: start; gap: .35rem; padding: .8rem; border-right: 1px solid #e1e5ed; background: #f7f8fb; }
.tump-chapter-nav button, .tump-tab-nav button { border: 0; border-radius: 8px; padding: .58rem .65rem; text-align: left; color: #596377; background: transparent; font: inherit; font-size: .76rem; cursor: pointer; }
.tump-chapter-nav button.active, .tump-tab-nav button.active { color: #fff; background: #000091; font-weight: 800; }
.tump-reader-area { min-width: 0; overflow: hidden; display: grid; grid-template-rows: auto minmax(0, 1fr); }
.tump-tab-nav { display: flex; gap: .35rem; overflow-x: auto; padding: .65rem; border-bottom: 1px solid #e1e5ed; }
.tump-tab-nav button { flex: 0 0 auto; }
.tump-reader { overflow: auto; padding: 1.2rem; }
.tump-reader-title { margin-bottom: 1rem; }
.tump-reader-title > span { color: #e1000f; font-size: .7rem; font-weight: 850; letter-spacing: .09em; text-transform: uppercase; }
.tump-reader-title h3 { margin: .22rem 0; color: #172033; font-family: Georgia, "Times New Roman", serif; font-size: 1.45rem; }
.tump-reader-title p { margin: 0; color: #667085; }
.tump-story-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.tump-story-columns section, .tump-supporting-copy { border: 1px solid #dfe3ec; border-radius: 12px; padding: 1rem; }
.tump-story-columns h4, .tump-supporting-copy h4 { margin: 0 0 .65rem; color: #000091; }
.tump-story-columns p, .tump-supporting-copy p { margin: 0; white-space: pre-wrap; color: #414b5d; line-height: 1.75; }
@media (max-width: 760px) {
  #teacher-upload-manager-bridge.tump-section { width: calc(100% - 1rem); margin: 1rem auto; padding: .9rem; }
  .tump-book-layout { grid-template-columns: 1fr; grid-template-rows: auto minmax(0, 1fr); }
  .tump-chapter-nav { display: flex; overflow-x: auto; border-right: 0; border-bottom: 1px solid #e1e5ed; }
  .tump-chapter-nav button { flex: 0 0 170px; }
  .tump-story-columns { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .tump-dialog-backdrop *, #teacher-upload-manager-bridge * { scroll-behavior: auto !important; transition: none !important; }
}