/* Funnics Island B1-B20 index-like drop-in styles. */
.b-series-book .book-about {
  margin: -6px 0 16px;
  color: var(--fg-soft, #374151);
}
.b-series-book .lesson p[data-audio] {
  position: relative;
}
.b-series-book .lesson p[data-audio].is-playing {
  background: #f0fdf4;
  outline: 1px solid #86efac;
  border-radius: 6px;
  padding: 2px 5px;
}
.b-series-book .yt-section {
  display: block;
}
.b-series-joined-link {
  text-align: center;
  margin-top: 8px;
}
.b-series-book .vocab-current table,
.b-series-book .vocab-cumulative table {
  table-layout: fixed;
}
.b-series-book .vocab-current td:first-child,
.b-series-book .vocab-cumulative td:first-child {
  font-weight: 700;
}
.b-series-book .new-word {
  color: var(--new, #dc2626);
  font-weight: 700;
}
.b-series-book .picturebook-body {
  display: grid;
  gap: 14px;
  margin: 14px 0 18px;
}
.b-series-book .picture-card {
  display: grid;
  grid-template-columns: minmax(170px, 240px) minmax(0, 1fr);
  gap: 14px;
  align-items: stretch;
  padding: 10px;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0,0,0,.04));
  content-visibility: auto;
  contain-intrinsic-size: 0 160px;
}
.b-series-book .picture-frame {
  position: relative;
  overflow: hidden;
  border-radius: 6px;
  background: #0f172a;
  aspect-ratio: 16 / 9;
}
.b-series-book .picture-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.b-series-book .picture-line {
  display: grid;
  gap: 6px;
  align-content: center;
  width: 100%;
  border: 1px solid #dbeafe;
  border-radius: 8px;
  background: #f8fafc;
  color: var(--fg, #111827);
  padding: 12px 14px;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
}
.b-series-book .picture-line:hover {
  border-color: #60a5fa;
  background: #eff6ff;
}
.b-series-book .picture-line.is-playing {
  border-color: #22c55e;
  background: #f0fdf4;
  box-shadow: 0 0 0 3px rgba(34,197,94,.18);
}
.b-series-book .picture-speaker {
  font-size: .82rem;
  font-weight: 800;
  color: #0369a1;
}
.b-series-book .picture-english {
  font-size: 1.02rem;
  font-weight: 800;
  line-height: 1.45;
}
.b-series-book .picture-japanese {
  color: var(--fg-soft, #374151);
  line-height: 1.55;
}
.b-series-summary .summary-lead {
  margin: 10px 0 16px;
  padding: 14px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
}
.b-series-summary .summary-lead p {
  margin: 0 0 10px;
}
.b-series-summary .summary-primary-link,
.b-series-summary .summary-combined-link {
  text-decoration: none;
}
.b-series-summary .summary-primary-link {
  display: inline-block;
  padding: 8px 14px;
  background: #fff;
  border: 2px solid #ef4444;
  border-radius: 6px;
  color: #991b1b;
  font-weight: 800;
}
.b-series-summary .summary-block h3 {
  margin: 0 0 10px;
  font-size: 1rem;
}
.b-series-summary .summary-combined-list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.b-series-summary .summary-extra-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.b-series-summary .summary-extra-note {
  margin: 0 0 10px;
  color: #4b5563;
  line-height: 1.65;
}
.b-series-summary .summary-extra-link {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid #fed7aa;
  border-radius: 8px;
  background: #fff7ed;
  color: var(--fg, #111827);
}
.b-series-summary .summary-extra-label {
  font-weight: 800;
  color: #c2410c;
}
.b-series-summary .summary-combined-link {
  display: grid;
  grid-template-columns: 48px minmax(120px, 1.1fr) minmax(160px, 1.4fr) auto;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #fff;
  color: var(--fg, #111827);
}
.b-series-summary .summary-code {
  font-weight: 800;
  color: #0369a1;
}
.b-series-summary .summary-title {
  color: var(--fg, #111827);
}
.b-series-summary .summary-grammar {
  color: var(--fg-soft, #374151);
}
.b-series-summary .summary-open {
  justify-self: end;
  padding: 4px 9px;
  border: 1px solid #bae6fd;
  border-radius: 999px;
  color: #0369a1;
  font-weight: 700;
  font-size: .82rem;
  background: #f0f9ff;
  white-space: nowrap;
}
.b-series-summary .summary-combined-link:hover {
  border-color: #38bdf8;
}
@media (max-width: 760px) {
  .b-series-book .picture-card {
    grid-template-columns: 1fr;
  }
  .b-series-summary .summary-combined-link {
    grid-template-columns: 42px minmax(0, 1fr);
  }
  .b-series-summary .summary-grammar,
  .b-series-summary .summary-open {
    grid-column: 2;
    justify-self: start;
  }
}