/* Responsive layer for the per-chapter source-derived intake overlay. */
html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

img,
video,
audio,
iframe {
  max-width: 100%;
}

.head-inner,
.wrap,
.foot-inner,
.chapter-head,
.chapter-assets,
.artifact-section,
.reader-tools,
.reader-layout,
.resource-grid,
.artifact-grid {
  min-width: 0;
  max-width: 100%;
}

.artifact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.artifact-card {
  min-width: 0;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.artifact-card audio,
.artifact-card video {
  display: block;
  width: 100%;
  height: auto;
}

.social-mobile-section {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid #d9e1e8;
}

.social-mobile-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.social-mobile-grid figure {
  min-width: 0;
  margin: 0;
}

.social-mobile-grid img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
}

@media (max-width: 760px) {
  .head-inner {
    min-height: auto;
    flex-wrap: wrap;
    gap: 8px 14px;
    padding-block: 12px;
  }

  .head-nav {
    max-width: 100%;
    flex-wrap: wrap;
    gap: 8px 14px;
  }

  .artifact-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .social-mobile-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 420px) {
  body {
    width: 100vw;
  }

  .head-inner,
  .wrap,
  .foot-inner {
    width: calc(100% - 24px) !important;
    max-width: calc(100% - 24px) !important;
    margin-inline: 12px;
  }

  .head-inner {
    display: block;
  }

  .head-nav {
    margin-top: 8px;
  }

  .chapter-head,
  .chapter-assets,
  .artifact-section,
  .reader-tools {
    padding-inline: 16px;
  }

  .social-mobile-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}
/* core-chapter-assets:v2 */
.resource-grid.core-resource-grid{grid-template-columns:minmax(0,1fr)!important;align-items:stretch}
.core-resource-grid .resource{min-width:0}
.core-resource-grid .resource-audio,.core-resource-grid .resource-video{grid-column:1/-1}
.core-resource-grid .resource-video>div,.core-resource-grid .resource-audio>div{width:100%}
.core-resource-grid .resource-video video{display:block;width:min(100%,860px);max-height:520px;margin:14px 0 10px;background:#06101c;border-radius:10px}
.core-resource-grid .resource-infographic-card,.core-resource-grid .resource-mindmap{min-height:300px}
.core-asset-preview{display:grid;grid-template-rows:180px auto;gap:10px;margin-top:12px;color:#174f86;font-weight:760;text-decoration:none}
.core-asset-preview img{display:block;width:100%;height:180px;object-fit:contain;background:#eef3f6;border:1px solid #d9e1e8;border-radius:9px}
.core-asset-preview-map img{padding:22px}
.core-asset-preview:hover span{text-decoration:underline;text-underline-offset:.18em}
.core-asset-actions{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 0!important}
@media(max-width:700px){.resource-grid.core-resource-grid{grid-template-columns:minmax(0,1fr)!important}.core-resource-grid .resource-audio,.core-resource-grid .resource-video{grid-column:auto}.core-resource-grid .resource-infographic-card,.core-resource-grid .resource-mindmap{min-height:0}}

/* chapter-experience-final:v1 */
.artifact-library{padding:0!important;overflow:hidden}
.artifact-library>summary{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:24px 26px;cursor:pointer;list-style:none;background:#fff;color:#102337}
.artifact-library>summary::-webkit-details-marker{display:none}
.artifact-library>summary strong{display:block;font:700 24px/1.2 Georgia,serif}
.artifact-library>summary small{display:block;margin-top:5px;color:#526579;font-size:.92rem;font-weight:400}
.artifact-library>summary:after{content:"＋";font-size:28px;color:#8e6711}
.artifact-library[open]>summary{border-bottom:1px solid #d6e0e8}
.artifact-library[open]>summary:after{content:"−"}
.artifact-count{flex:none;padding:5px 10px;border:1px solid #a9c5d9;border-radius:999px;color:#0b5c8c;font-size:.78rem;font-weight:800}
.artifact-library-body{padding:24px 26px 28px}
.shareable-images-head{max-width:720px}
.shareable-image-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:18px}
.shareable-image-card{display:grid;grid-template-rows:minmax(180px,280px) auto auto;gap:9px;padding:14px;border:1px solid #c8d5e1;border-radius:10px;background:#fff;color:#123b5d;text-decoration:none;box-shadow:0 7px 18px rgba(7,25,45,.06)}
.shareable-image-card:hover{border-color:#9a7114;transform:translateY(-2px)}
.shareable-image-card:focus-visible{outline:3px solid #b8881a;outline-offset:3px}
.shareable-image-card img{width:100%;height:100%;max-height:280px;object-fit:contain;background:#eef3f6;border-radius:7px}
.shareable-image-title{font-weight:800;line-height:1.3}
.shareable-image-action{color:#075c91;font-size:.9rem;font-weight:700}
@media(max-width:700px){.artifact-library>summary{align-items:flex-start;padding:20px}.artifact-library-body{padding:20px}.artifact-count{display:none}.shareable-image-grid{grid-template-columns:1fr}.shareable-image-card{grid-template-rows:minmax(170px,240px) auto auto}}

/* chapter-assets-usability:v1 */
.chapter-modes{gap:8px}.chapter-modes a{position:relative;min-height:42px;padding:8px 13px;background:#fff;border-color:#c7d4de;border-radius:999px;box-shadow:0 3px 10px rgba(8,24,43,.04)}.chapter-modes a:hover{background:#08182b;border-color:#08182b;color:#fff}.chapter-assets{padding:clamp(22px,4vw,38px);background:linear-gradient(150deg,#fff 0%,#f4f7f9 100%);border-top-width:4px}.chapter-assets-head{margin-bottom:26px}.chapter-assets-head h2{font-size:clamp(1.7rem,3.4vw,2.35rem)}.resource-grid.core-resource-grid{gap:18px}.core-resource-grid .resource{display:grid;grid-template-columns:50px minmax(0,1fr);gap:17px;min-height:0;padding:22px 24px;border:1px solid #cbd7e0;border-left:4px solid #b98720;border-radius:13px;background:#fff;box-shadow:0 8px 22px rgba(8,24,43,.055);transition:border-color .16s ease,box-shadow .16s ease,transform .16s ease}.core-resource-grid .resource:before{display:none}.core-resource-grid .resource:has(a:hover){border-color:#9fb4c4;box-shadow:0 14px 30px rgba(8,24,43,.11);transform:translateY(-2px)}.core-resource-grid .resource-icon{width:46px;height:46px;border-radius:50%;background:#08182b;border-color:#08182b;color:#f3c55f;font-size:1.1rem}.core-resource-grid .eyebrow{margin-bottom:4px}.core-resource-grid h3{margin:0;color:#08182b;font:700 clamp(1.25rem,2.4vw,1.65rem)/1.2 Georgia,"Times New Roman",serif}.core-resource-grid p{max-width:72ch;margin-top:7px;font-size:.94rem}.core-resource-grid .resource-audio audio{display:block;width:100%;max-width:none;height:54px!important;margin-top:16px}.core-resource-grid .resource-video video{width:100%;max-width:980px;aspect-ratio:16/9;max-height:none;object-fit:contain;margin-top:16px}.core-resource-grid .download-link,.core-asset-preview span{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:9px 14px;background:#08182b;border:1px solid #08182b;border-radius:8px;color:#fff;font-size:.86rem;font-weight:780;text-decoration:none}.core-resource-grid .download-link:hover,.core-asset-preview:hover span{background:#174f86;border-color:#174f86;color:#fff;text-decoration:none}.core-asset-preview{grid-template-columns:minmax(160px,230px) minmax(0,1fr);grid-template-rows:auto;align-items:center;gap:18px;margin-top:16px;padding:14px;background:#f4f7f9;border:1px solid #d5e0e7;border-radius:11px}.core-asset-preview img{width:100%;height:170px;border:0;background:#fff}.core-asset-preview span{width:fit-content}.artifact-library{margin-top:22px;border:1px solid #cbd7e0;border-radius:14px;box-shadow:0 8px 22px rgba(8,24,43,.045)}.artifact-library>summary{min-height:86px}.artifact-library>summary:hover{background:#f8fafb}.artifact-grid{gap:18px}.artifact-card{position:relative;display:flex;flex-direction:column;min-height:100%;padding:17px;background:#fff;border:1px solid #cbd7e0;border-radius:12px;box-shadow:0 6px 18px rgba(8,24,43,.045);transition:border-color .16s ease,box-shadow .16s ease,transform .16s ease}.artifact-card[data-card-clickable="true"]{cursor:pointer}.artifact-card[data-card-clickable="true"]:hover{border-color:#9b7118;box-shadow:0 12px 26px rgba(8,24,43,.09);transform:translateY(-2px)}.artifact-card h4{margin:13px 0 5px;color:#08182b;font:700 1.08rem/1.25 Georgia,"Times New Roman",serif}.artifact-card>p{margin:0 0 12px;color:#526478;font-size:.88rem;line-height:1.5}.artifact-card .artifact-preview-link{display:flex;align-items:center;justify-content:center;min-height:150px;padding:12px;background:#eef3f6;border-radius:9px}.artifact-card .artifact-preview{display:block;width:100%;height:150px;object-fit:contain}.artifact-card>.download-link{width:fit-content;margin-top:auto}.artifact-card>p:last-child{margin:8px 0 0}.artifact-card>p:last-child .download-link{padding:6px 0;background:transparent;border:0;color:#526478;font-size:.77rem;text-decoration:underline}.shareable-image-card{border-radius:12px}.shareable-image-action{display:inline-flex;width:fit-content;min-height:38px;align-items:center;padding:7px 11px;background:#08182b;border-radius:7px;color:#fff}.shareable-image-card:hover .shareable-image-action{background:#174f86}.resource a:focus-visible,.artifact-card a:focus-visible{outline:3px solid #b98720;outline-offset:3px}
@media(max-width:700px){.chapter-modes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.chapter-modes a{justify-content:center;text-align:center}.core-resource-grid .resource{grid-template-columns:40px minmax(0,1fr);gap:13px;padding:18px 16px}.core-resource-grid .resource-icon{width:40px;height:40px}.core-asset-preview{grid-template-columns:1fr;padding:12px}.core-asset-preview img{height:auto;max-height:260px}.artifact-grid{grid-template-columns:1fr}.artifact-library-body{padding:18px}.artifact-card .artifact-preview-link{min-height:130px}.artifact-card .artifact-preview{height:130px}}
@media(max-width:420px){.chapter-modes{grid-template-columns:1fr}.chapter-modes a{width:100%}.core-resource-grid .resource{display:block}.core-resource-grid .resource-icon{margin-bottom:12px}.chapter-assets{padding-inline:14px}}