@import url("https://fonts.googleapis.com/css2?family=Lexend+Deca:wght@400;500;600;700;800&display=swap");
:root {
  --green:#385f4b;
  --dark:#284536;
  --sage:#dce9df;
  --light:#f4f8f5;
  --purple:#6f3f91;
  --orange:#d9872f;
  --yellow:#fff0b6;
  --ink:#17221c;
  --muted:#59665f;
  --line:#b9c4bd;
  --error:#9a2f2f;
  --body:19px
}

* {
  box-sizing:border-box
}

html {
  scroll-behavior:smooth
}

body {
  margin:0;
  background:#fff;
  color:var(--ink);
  font-family:"Lexend Deca",Arial,sans-serif;
  font-size:var(--body);
  line-height:1.58
}

button,input,textarea {
  font:inherit
}

button {
  cursor:pointer
}

button:focus-visible,input:focus-visible,textarea:focus-visible,.sentence:focus-visible,.vocab:focus-visible {
  outline:3px solid var(--orange);
  outline-offset:3px
}

.overlay {
  position:fixed;
  inset:0;
  background:#fff;
  z-index:999;
  display:flex;
  align-items:center;
  justify-content:center
}

.overlay.hidden {
  display:none!important;
  pointer-events:none!important
}

.access-card {
  width:min(1760px,98vw);
  min-height:min(1190px,96vh);
  border:6px solid var(--green);
  border-radius:34px;
  padding:50px 72px 64px;
  text-align:center
}

.access-card img {
  width:min(500px,38vw);
  height:auto;
  display:block;
  margin:0 auto 16px
}

.access-card h1 {
  margin:0;
  color:var(--ink);
  font-size:clamp(2rem,3.35vw,3.7rem);
  line-height:1.12;
  font-weight:800
}

.opening-prompt {
  margin:42px 0 38px;
  font-size:clamp(1.4rem,2.3vw,2.4rem);
  font-weight:700;
  color:var(--muted)
}

.begin-reading-button {
  display:block;
  width:min(1120px,78vw);
  min-height:146px;
  margin:0 auto;
  padding:24px 36px;
  border:0;
  background:var(--green);
  color:#fff;
  border-radius:24px;
  font-weight:800;
  font-size:clamp(1.35rem,2.15vw,2.25rem)
}

.begin-reading-button:hover { background:var(--dark) }

.opening-save-note {
  max-width:1600px;
  margin:56px auto 0;
  color:var(--ink);
  font-size:clamp(1.25rem,2.4vw,2.35rem);
  line-height:1.55;
  font-weight:500
}

.brand-header {
  padding:12px 18px
}

.brand-lockup {
  max-width:1160px;
  margin:auto;
  display:flex;
  align-items:center;
  gap:12px;
  color:var(--dark);
  font-size:clamp(1.8rem,3.4vw,2.65rem);
  font-weight:800
}

.brand-lockup img {
  height:58px
}

.sticky-controls {
  position:sticky;
  top:0;
  z-index:50;
  background:#fff;
  border-bottom:3px solid var(--green)
}

.controls {
  max-width:1160px;
  margin:auto;
  padding:8px 16px;
  display:flex;
  gap:18px;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap
}

.controls button,.support-actions button,.bottom-nav button,.margin-help-button {
  border:2px solid var(--green);
  background:#fff;
  color:var(--dark);
  border-radius:8px;
  padding:8px 12px;
  font-weight:700
}

.size-btn.active,.page-btn.active {
  background:var(--sage)
}

.lesson-title,main {
  max-width:1160px;
  margin:18px auto;
  padding:0 18px
}

.lesson-title h1 {
  color:var(--dark);
  font-size:clamp(1.65rem,2.8vw,2.25rem)
}

.student-fields {
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-bottom:18px
}

.student-fields label {
  display:flex;
  flex-direction:column;
  font-weight:700
}

.student-fields input {
  border:2px solid var(--line);
  border-radius:7px;
  padding:8px
}

.screen-title {
  color:var(--dark);
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  margin:1.1rem 0 .7rem
}

.block-heading {
  color:var(--dark);
  font-size:clamp(1.25rem,2.1vw,1.65rem);
  margin:1.2rem 0 .55rem
}

.box {
  border:2px solid var(--line);
  border-radius:12px;
  padding:18px 20px;
  margin:0 0 18px;
  background:#fff
}

.reading-box {
  border-left:6px solid var(--green)
}

.reading-box p {
  margin:.55rem 0 1rem
}

.sentence {
  cursor:pointer;
  border-radius:5px;
  padding:2px 3px;
  user-select:text
}

.sentence:hover,.sentence.active {
  background:var(--yellow)
}

.vocab {
  color:var(--purple);
  font-weight:700;
  cursor:pointer;
  user-select:text
}

.question-box p:first-child {
  margin-top:0
}

.instructions-box {
  border-left:6px solid var(--orange)
}

.response-shell {
  display:flex;
  align-items:flex-start;
  gap:8px;
  width:100%
}

.response-shell.inline {
  display:inline-flex;
  width:auto;
  vertical-align:middle
}

.response-input,.response-area,.gap-input,.table-input,.path-input,.chain-input,.sequence-input,.graph-input,.margin-note-textarea {
  background:#fff;
  border:2px solid var(--green);
  border-radius:7px;
  padding:8px;
  color:var(--ink);
  position:relative;
  z-index:1
}

.response-input {
  width:100%;
  max-width:none;
}

.response-area {
  width:100%;
  resize:vertical
}

.choices {
  display:grid;
  gap:8px;
  margin-top:10px
}

.paper-table {
  border-collapse:collapse;
  width:100%
}

.paper-table th,.paper-table td {
  border:2px solid var(--line);
  padding:9px;
  vertical-align:top
}

.paper-table th {
  background:var(--light)
}

.table-input {
  width:100%
}

.image-box img {
  max-width:100%;
  height:auto;
  display:block;
  margin:auto
}

.pathway,.chain {
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px
}

.path-step {
  width:min(780px,100%);
  border:2px solid var(--line);
  border-radius:10px;
  padding:12px;
  text-align:center
}

.arrow {
  font-size:1.5rem;
  color:var(--green);
  font-weight:800
}

.margin-note-wrap {
  border:2px solid var(--green);
  border-left:6px solid var(--green);
  border-radius:12px;
  padding:14px 16px;
  margin:-4px 0 18px;
  background:var(--light)
}
.margin-type-status {
  margin:.35rem 0 .55rem;
  color:var(--green);
  font-size:.9rem;
  font-weight:700
}

.margin-note-top {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap
}

.margin-note-top strong {
  color:var(--dark)
}

.support-panel {
  position:fixed;
  right:12px;
  top:88px;
  bottom:12px;
  width:min(430px,calc(100vw - 24px));
  background:#fff;
  border:3px solid var(--green);
  border-radius:12px;
  display:none;
  z-index:100;
  overflow:hidden
}

.support-panel.open {
  display:flex;
  flex-direction:column
}

.support-head,.grade-modal-head {
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  padding:12px;
  border-bottom:2px solid var(--sage)
}

.support-head h2,.grade-modal-head h2 {
  margin:0;
  color:var(--dark)
}

.support-head button,.grade-modal-head button {
  border:0;
  background:#fff;
  font-size:1.7rem
}

.support-actions {
  display:flex;
  gap:8px;
  padding:12px;
  border-bottom:1px solid var(--line)
}

.support-content {
  padding:12px;
  overflow:auto;
  flex:1
}

.break-parts {
  display:flex;
  flex-direction:column;
  gap:10px
}

.break-part {
  background:var(--yellow);
  border:2px solid var(--orange);
  border-radius:999px;
  padding:8px 16px;
  font-weight:600
}

.coach-choice,.starter-button {
  display:block;
  width:100%;
  text-align:left;
  background:#fff;
  border:2px solid var(--green);
  border-radius:10px;
  padding:10px 12px;
  margin:8px 0;
  color:var(--ink)
}

.grade-modal {
  position:fixed;
  inset:0;
  background:#fff;
  z-index:150;
  display:none;
  overflow:auto
}

.grade-modal.open {
  display:block
}

.grade-modal-inner {
  max-width:980px;
  margin:auto;
  padding:20px
}

.grade-missing-item {
  border:2px solid var(--line);
  border-radius:10px;
  padding:12px;
  margin:10px 0
}

.grade-missing-item.unanswered {
  border-color:var(--orange)
}

.grade-missing-item button {
  border:2px solid var(--green);
  background:#fff;
  color:var(--dark);
  border-radius:8px;
  padding:8px 12px;
  font-weight:700
}

#printAssignment {
  display:none
}

.bottom-nav {
  display:flex;
  justify-content:space-between;
  margin:24px 0 60px
}

.paper-response,.paper-choices {
  display:none
}

html[data-pathway="paper"] .typed-response,html[data-pathway="paper"] .student-fields,html[data-pathway="paper"] {
  display:none!important
}

html[data-pathway="paper"] .paper-response,html[data-pathway="paper"] .paper-choices {
  display:inline-block
}

html[data-pathway="paper"] .paper-response-lines {
  display:block;
  width:100%;
  min-height:calc(var(--paper-lines,3)*31px);
  margin-top:10px;
  background:repeating-linear-gradient(to bottom,transparent 0,transparent 30px,#747d78 31px)
}

html[data-pathway="paper"] .paper-inline-blank {
  min-width:90px;
  height:1.25em;
  border-bottom:2px solid var(--ink);
  vertical-align:bottom;
  margin:0 6px
}

html[data-pathway="paper"] .paper-number-box {
  width:55px;
  height:42px;
  border:2px solid var(--ink)
}

html[data-pathway="paper"] .paper-choices {
  display:grid;
  gap:8px
}

.paper-choice {
  display:flex;
  gap:8px
}

.paper-check {
  width:21px;
  height:21px;
  border:2px solid var(--ink)
}

.matching-box {
  display:grid;
  grid-template-columns:minmax(220px,.8fr) minmax(360px,1.3fr);
  gap:28px
}

.matching-terms,.matching-definitions {
  display:grid;
  gap:14px
}

.matching-definition {
  display:grid;
  grid-template-columns:100px 1fr;
  gap:14px;
  align-items:center
}

.word-bank-items {
  display:flex;
  flex-wrap:wrap;
  gap:18px 42px;
  line-height:1.8
}

.venn-regions {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px
}

.venn-region {
  border:2px solid var(--line);
  border-radius:12px;
  padding:12px
}

.compact-response-row {
  display:grid;
  grid-template-columns:120px 1fr;
  gap:14px;
  align-items:center;
  margin:12px 0
}

.follow-up-response {
  display:grid;
  grid-template-columns:minmax(180px,260px) 1fr;
  gap:14px;
  align-items:start;
  margin:14px 0
}

html[data-text-size="large"] {
  --body:21px
}

html[data-text-size="larger"] {
  --body:23px
}

html[data-text-size="largest"] {
  --body:25px
}

@media(max-width:760px) {
  .pathway-choices {
    grid-template-columns:1fr
  }

  .support-panel {
    left:8px;
    right:8px;
    top:auto;
    bottom:8px;
    width:auto;
    max-height:72vh
  }

  .matching-box,.venn-regions,.follow-up-response {
    grid-template-columns:1fr
  }

  .response-shell {
    flex-wrap:wrap
  }

  .question-box.response-layout-prompt_left_answer_right .labeled-responses label {
    grid-template-columns:1fr
  }

  .brand-lockup {
    font-size:1.4rem
  }

  .brand-lockup img {
    height:45px
  }

}

@media print {
  @page {
    margin:.5in
  }

  body > :not(#printAssignment) {
    display:none!important
  }

  #printAssignment {
    display:block!important;
    max-width:none;
    margin:0;
    padding:0
  }

  #printAssignment .print-page {
    page-break-after:always;
    break-after:page
  }

  #printAssignment .print-page:last-child {
    page-break-after:auto;
    break-after:auto
  }

  #printAssignment .print-lesson-title {
    color:var(--dark);
    font-size:20pt;
    margin:0 0 14px
  }

  #printAssignment .margin-help-button {
    display:none!important
  }

  #printAssignment input,
  #printAssignment textarea {
    color:var(--ink)!important;
    background:#fff!important;
    -webkit-print-color-adjust:exact;
    print-color-adjust:exact
  }

  #printAssignment .box,
  #printAssignment mark[data-bmd-highlight] {
    -webkit-print-color-adjust:exact;
    print-color-adjust:exact
  }

}

.tts-status {
  border:2px solid var(--line);
  border-radius:8px;
  padding:10px;
  margin-top:10px
}

.tts-status.error {
  border-color:var(--error);
  color:var(--error);
  font-weight:700
}

/* v0.11.1 lesson-build repair: approved stationary Focus behavior */

.reading-box.focus-active .sentence {
  opacity:.28;
  transition:opacity .12s ease
}

.reading-box.focus-active .sentence.focus-selected {
  opacity:1;
  text-decoration:underline;
  text-decoration-thickness:2px;
  text-underline-offset:3px
}

#focusButton[aria-pressed="true"] {
  background:var(--sage);
  border-width:3px
}

#focusButton:disabled {
  opacity:.45;
  cursor:not-allowed
}

/* v0.11.1 — Mark the Meaning controls and saved highlights (Typing pathway only). */

#markMeaningControls {
  display:flex;
  gap:7px;
  align-items:center;
  flex-wrap:wrap
}

#markMeaningControls [data-highlight-color] {
  min-width:78px
}

#markMeaningControls [data-highlight-color][aria-pressed="true"] {
  border-width:3px
}

#markMeaningControls [data-highlight-color="green"][aria-pressed="true"] {
  background:#9DC3E6
}

#markMeaningControls [data-highlight-color="orange"][aria-pressed="true"] {
  background:#f4b183
}

#markMeaningStatus {
  font-size:.86rem;
  color:var(--muted)
}

#markMeaningDirections {
  border-left:6px solid var(--orange)
}

#markMeaningDirections .block-heading {
  margin-top:0
}

mark[data-bmd-highlight] {
  color:inherit;
  padding:0 .05em;
  border-radius:3px
}

mark[data-bmd-highlight][data-highlight-color="green"] {
  background:#9DC3E6
}

mark[data-bmd-highlight][data-highlight-color="orange"] {
  background:#f4b183
}

html[data-pathway="paper"] #markMeaningControls, html[data-pathway="paper"] #markMeaningDirections {
  display:none!important
}

@media print {
  #markMeaningControls {
    display:none!important
  }

}

/* v0.12.2 preservation corrections */

.later-identifiers {
  display:flex;
  justify-content:flex-end;
  gap:10px;
  margin:-4px 0 12px
}

.later-identifiers label {
  font-size:.78rem;
  font-weight:700;
  display:flex;
  align-items:center;
  gap:5px
}

.later-identifiers input {
  width:72px;
  height:30px;
  border:2px solid var(--line);
  border-radius:6px;
  padding:3px 5px
}

.task-context-box {
  border-left:6px solid var(--orange)
}

.task-context-box p {
  margin:.55rem 0 1rem
}

.labeled-responses {
  display:grid;
  gap:16px;
  margin-top:14px
}

.labeled-responses label>strong {
  display:block;
  color:var(--dark);
  margin-bottom:5px
}

/* Canonical response geometry selected from lesson data. */
.question-box.response-layout-prompt_left_answer_right .labeled-responses label {
  display:grid;
  grid-template-columns:minmax(260px,1fr) minmax(260px,1fr);
  gap:18px;
  align-items:center
}

.question-box.response-layout-prompt_left_answer_right .response-label>strong {
  display:block;
  margin-bottom:4px
}

.question-box.response-layout-prompt_left_answer_right .response-row-prompt {
  margin:0
}

.question-box.response-layout-prompt_left_answer_right .response-shell,
.question-box.response-layout-prompt_left_answer_right .response-input {
  width:100%;
  max-width:none
}

.question-box.response-layout-inline .labeled-responses label {
  display:flex;
  gap:14px;
  align-items:center;
  flex-wrap:wrap
}

.question-box.response-layout-inline .response-shell {
  flex:1 1 260px
}

.morphology-title {
  display:block;
  font-size:1.35rem;
  margin-bottom:14px
}

.morphology-cards {
  display:grid;
  gap:16px
}

.morphology-card {
  border:2px solid var(--line);
  border-left-width:12px;
  border-radius:14px;
  padding:18px 24px
}

.morphology-card.green {
  border-left-color:var(--green)
}

.morphology-card.orange {
  border-left-color:var(--orange)
}

.morphology-card strong {
  display:block;
  font-size:1.35rem;
  color:var(--dark);
  margin-bottom:10px
}

.morphology-card p {
  font-size:1.15rem;
  margin:0;
  line-height:1.55
}

/* v0.15.1 — compact right-side Vocabulary panel for full-panel visibility. */
.support-panel[data-mode="vocabulary"] {
  width:min(430px,calc(100vw - 24px))
}

.morphology-panel {
  border:2px solid var(--line);
  border-radius:14px;
  padding:16px 18px
}

.morphology-title {
  font-size:1.35rem;
  margin-bottom:14px
}

.morphology-cards {
  gap:14px
}

.morphology-card {
  min-height:0;
  border-width:2px;
  border-left-width:12px;
  border-radius:14px;
  padding:16px 18px
}

.morphology-card strong {
  font-size:1.25rem;
  margin-bottom:8px
}

.morphology-card p {
  font-size:1.05rem;
  line-height:1.4
}

@media(max-width:760px) {
  .support-panel[data-mode="vocabulary"] {
    width:auto
  }

  .morphology-panel {
    padding:26px 22px
  }

  .morphology-card {
    min-height:0;
    padding:14px 16px;
    border-left-width:10px
  }

  .morphology-title,
  .morphology-card strong {
    font-size:1.25rem
  }

  .morphology-card p {
    font-size:1.05rem
  }

  .later-identifiers {
    justify-content:flex-start;
    flex-wrap:wrap
  }

}

/* v0.12.3 — declared inline gap fills and source-left chain arrows */
.gap-fill-box p {
  line-height:2.2;
}
.gap-fill-box .response-shell.inline {
  display:inline-flex;
  width:auto;
  margin:0 .35rem;
}
.gap-fill-box .response-input.width-short {
  width:150px;
  min-width:120px;
  height:2.1em;
}
.source-chain-line {
  position:relative;
  margin:.25rem 0 2.15rem!important;
}
.source-chain-arrow {
  display:block;
  width:1.5rem;
  margin:.25rem 0 -1.8rem 0;
  color:var(--green);
  font-size:1.55rem;
  line-height:1;
  text-align:left;
}

/* v0.12.4 — approved plain left-aligned source chain */
.source-chain-left{display:flex;flex-direction:column;align-items:flex-start;gap:0;margin-top:8px}.source-chain-left-step{padding:0;text-align:left}.source-chain-left-arrow{font-size:1.5rem;line-height:1;color:var(--green);margin:.18rem 0 .18rem .15rem}.source-chain-box{border-left:6px solid var(--green)}

/* v0.12.6 — skeletal source-fidelity additions */
.response-row-prompt{display:block;margin:.35rem 0 .5rem;font-weight:600}
.labeled-responses label.section-break-before{margin-top:22px;padding-top:18px;border-top:2px solid var(--line)}
.number-order-intro{margin:.2rem 0 18px}
.number-order-list{display:grid;gap:16px}
.number-order-row{display:grid;grid-template-columns:90px minmax(0,1fr);gap:16px;align-items:center}
.number-order-row .response-input{width:72px}
html[data-pathway="paper"] .number-order-row .paper-number-box{display:inline-block}

/* Current-framework compact responses and source-order fidelity */
.gap-fill-box p { white-space:pre-line; }
.gap-fill-box .response-input.width-medium {
  width:300px;
  min-width:220px;
  max-width:min(300px,70vw);
}
.question-box.compact-block .response-shell.inline {
  display:inline-flex;
  width:auto;
  margin-top:.45rem;
}
.question-box.compact-block .labeled-responses {
  display:grid;
  gap:12px;
}
.question-box.compact-block .labeled-responses label {
  display:grid;
  grid-template-columns:2.5rem minmax(120px,180px);
  gap:10px;
  align-items:center;
}
.question-box.compact-block .response-input.width-short {
  width:170px;
  max-width:45vw;
  height:2.1em;
}
.instruction-section + .instruction-section {
  margin-top:22px;
  padding-top:18px;
  border-top:2px solid var(--line);
}
.instruction-section h4 {
  margin:0 0 8px;
  font-size:1.18rem;
  color:var(--dark);
}
.instruction-section ul { margin-bottom:0; }
.interactive-diagram-box { border-left:6px solid var(--orange); }
.diagram-tools {
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.diagram-tools button {
  min-height:44px;
  border:2px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--dark);
  font:inherit;
  font-weight:700;
  padding:8px 12px;
}
.diagram-tools button.selected {
  border-color:var(--purple);
  outline:3px solid rgba(112,63,147,.22);
}
.diagram-swatch {
  display:inline-block;
  width:22px;
  height:22px;
  margin-right:7px;
  vertical-align:middle;
  border:2px solid var(--dark);
  border-radius:5px;
  background:var(--diagram-color);
}
[data-diagram-status] {
  flex:1 1 230px;
  color:var(--muted);
  font-size:.92rem;
}
.diagram-scroll { overflow-x:auto; }
.diagram-stage {
  position:relative;
  min-width:850px;
  width:100%;
  aspect-ratio:var(--diagram-aspect);
  background:#fff;
}
.diagram-stage canvas {
  position:relative;
  z-index:2;
  display:block;
  width:100%;
  height:100%;
  cursor:crosshair;
  touch-action:manipulation;
}
.diagram-base-image {
  position:absolute;
  inset:0;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:fill;
}
.diagram-label-layer {
  position:absolute;
  inset:0;
  pointer-events:none;
  z-index:3;
}
.sr-only {
  position:absolute!important;
  width:1px!important;
  height:1px!important;
  padding:0!important;
  margin:-1px!important;
  overflow:hidden!important;
  clip:rect(0,0,0,0)!important;
  white-space:nowrap!important;
  border:0!important;
}
.diagram-label {
  position:absolute;
  left:var(--x);
  top:var(--y);
  width:var(--w);
  transform:translateY(-50%);
  pointer-events:auto;
}
.diagram-label .response-shell { display:block; width:100%; }
.diagram-label .response-input {
  width:100%;
  min-width:0;
  height:34px;
  padding:5px 7px;
  border:2px solid var(--purple);
  border-radius:7px;
  background:rgba(255,255,255,.94);
  font-size:13px;
  font-weight:700;
}
.diagram-label .paper-inline-blank {
  width:100%;
  min-width:0;
  height:28px;
  background:rgba(255,255,255,.94);
  border-bottom:2px solid var(--dark);
}
html[data-pathway="paper"] .diagram-tools { display:none; }
html[data-pathway="paper"] .diagram-stage canvas { pointer-events:none; cursor:default; }
@media print {
  .diagram-tools { display:none!important; }
  .diagram-scroll { overflow:visible; }
  .diagram-stage { min-width:0; }
}



/* v1.3 approved opening-sign repair — 2026-08-01 */
.overlay .access-card {
  width:min(900px,94vw);
  min-height:0;
  border:3px solid var(--green);
  border-radius:16px;
  padding:28px 36px 36px;
  text-align:center;
}
.overlay .access-card img {
  width:auto;
  max-width:100%;
  height:220px;
  object-fit:contain;
  display:block;
  margin:0 auto 8px;
}
.overlay .access-card h1 {
  margin:0;
  color:var(--ink);
  font-size:clamp(1.65rem,2.9vw,2.55rem);
  line-height:1.12;
  font-weight:800;
}
.overlay .opening-prompt {
  margin:1rem 0;
  font-size:1.25rem;
  font-weight:650;
  color:var(--muted);
}
.overlay .opening-note {
  max-width:760px;
  margin:1.35rem auto;
  color:var(--ink);
  font-size:1rem;
  line-height:1.55;
  font-weight:500;
}
.overlay .pathway-choices {
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  max-width:560px;
  margin:18px auto 0;
}
.overlay .pathway-choice,
.overlay .begin-reading-button {
  display:block;
  width:100%;
  min-height:72px;
  margin:0;
  padding:14px 20px;
  border:2px solid var(--green);
  background:var(--green);
  color:#fff;
  border-radius:12px;
  font-weight:800;
  font-size:1.15rem;
}
.overlay .pathway-choice:hover,
.overlay .begin-reading-button:hover { background:var(--dark); }
@media (max-width:600px) {
  .overlay .access-card { padding:20px 18px 24px; }
  .overlay .access-card img { height:160px; }
}


/* Persistent highlight Erase / Erase All controls — v1.0.0 */
#markMeaningControls [data-highlight-erase] {
  border:2px solid var(--green, var(--bmd-green, #385f4b));
  background:#fff;
  color:var(--dark, var(--bmd-teal, #284536));
  border-radius:8px;
  min-height:42px;
  padding:7px 12px;
  font-weight:800;
}
#markMeaningControls [data-highlight-erase="one"][aria-pressed="true"],
#markMeaningControls [data-highlight-erase="one"].active { background:#fff0b6; border-color:#d9872f; }
#markMeaningControls [data-highlight-erase="all"] { border-color:#9a2f2f; color:#7b2424; }
mark[data-bmd-highlight] { cursor:pointer; }


/* Exact grading interface from the approved Skeletal System reader. */
.grade-summary-badge{display:inline-flex;align-items:center;min-height:2.25rem;padding:.35rem .7rem;border:2px solid var(--green);border-radius:999px;background:var(--light);color:var(--dark);font-weight:800}
#gradeWorkBtn{background:var(--orange);color:#fff;border-color:#9d5b19}
#gradeWorkBtn:disabled{opacity:.65;cursor:wait}
.grade-dialog-inner{max-width:920px}
.grade-error-code{font-size:.8rem;color:var(--muted)}
.response-incorrect{outline:4px solid #c62828!important;outline-offset:3px;border-radius:9px;box-shadow:0 0 0 2px #fff,0 0 0 6px rgba(198,40,40,.2)}
.response-incorrect::after{content:"Needs revision";display:inline-block;margin:.4rem 0 0 .45rem;padding:.16rem .45rem;border-radius:999px;background:#c62828;color:#fff;font-size:.78rem;font-weight:800}
.graded-control.response-incorrect{padding:.45rem}
.print-grade-summary{margin:0 0 12px;padding:8px 12px;border:2px solid var(--green);background:var(--light);font-weight:700}
.attempt-confirmation[hidden]{display:none!important}
.attempt-confirmation{position:fixed;inset:0;z-index:1000;background:#fff;display:flex;align-items:center;justify-content:center;padding:24px}
.attempt-confirmation-card{width:min(760px,96vw);border:4px solid var(--green);border-radius:18px;padding:36px;text-align:center;background:#fff;box-shadow:0 14px 40px rgba(0,0,0,.18)}
.attempt-confirmation-card h2{font-size:clamp(1.65rem,4vw,2.5rem);margin:0 0 30px;color:var(--dark)}
.attempt-confirmation-actions{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.attempt-confirmation-actions button{min-height:78px;border:3px solid var(--dark);border-radius:12px;background:var(--green);color:#fff;font-weight:800;font-size:1.08rem;padding:12px}
@media(max-width:760px){.grade-summary-badge{width:100%;justify-content:center}.attempt-confirmation-actions{grid-template-columns:1fr}}
@media print{.attempt-confirmation{display:none!important}.print-grade-summary{display:block}}

/* v0.15.13 — granular audio, highlight exemptions, and gated graph activities. */
.inline-hear{display:inline-flex;align-items:center;justify-content:center;flex:0 0 38px;width:38px;height:38px;margin:0;padding:0;border:2px solid #185a9d;border-radius:50%;background:#fff;color:#123b66;font-size:1rem;line-height:1;cursor:pointer}
.inline-hear:hover,.inline-hear:focus-visible{background:#eaf4ff;outline:3px solid #f4b183;outline-offset:2px}
.audio-text-row,.margin-note-label,.coach-choice-row,.graph-choice-row{display:flex;align-items:flex-start;gap:12px}
.audio-text-content{flex:1 1 auto;min-width:0}
.audio-text-content>p:first-child{margin-top:0}.audio-text-content>p:last-child{margin-bottom:0}
.reading-box>p>.inline-hear{margin-left:10px;vertical-align:middle}
.grouped-list-audio{align-items:flex-start;margin:.7rem 0}.grouped-list-audio ul{margin-top:.4rem}
.highlight-exempt{display:inline-block;margin-left:10px;padding:3px 8px;border:1px solid #527a94;border-radius:999px;background:#eef7fc;color:#244d66;font-size:.78rem;font-weight:800;white-space:nowrap}
.question-context{margin:0 0 14px;padding:12px 14px;border-left:5px solid #79a9c7;background:#eef7fc}
.question-context-label{font-weight:800;margin-bottom:8px}.question-context-line+.question-context-line{margin-top:9px}.answer-part-row{padding:.4rem 0}
.coach-choice-row{margin:10px 0}.coach-choice-row .coach-choice{flex:1}.sentence-starters{display:grid;gap:8px}
.page-btn:disabled{cursor:not-allowed;opacity:.58}
.graph-builder{border-left:6px solid #246b9b;max-width:920px;margin:0 auto;padding:18px 20px 20px}
.graph-builder-header,.graph-canvas,.graph-choice-bank,.graph-status{max-width:760px;margin-left:auto;margin-right:auto}
.graph-step-label{margin:0;color:#24506f;font-weight:800}.graph-builder-header h3{margin:.15rem 0 .5rem;color:var(--dark)}
.graph-canvas{margin-top:16px;margin-bottom:16px;padding:16px 18px 12px;border:2px solid #b8c8d3;border-radius:12px;background:#fff}
.graph-title-slot,.graph-x-label-slot{width:min(100%,560px);min-height:44px;margin:0 auto 12px}.graph-x-label-slot{margin-top:12px}
.graph-body{display:grid;grid-template-columns:64px 50px minmax(300px,1fr);align-items:stretch;min-height:330px}
.graph-y-label-slot{align-self:center;justify-self:center;width:250px;min-height:44px;transform:rotate(-90deg)}
.graph-scale{display:flex;flex-direction:column;justify-content:space-between;padding:0 8px 42px 0;text-align:right;font-variant-numeric:tabular-nums;font-weight:700}
.graph-plot{position:relative;border-left:3px solid #1f2933;border-bottom:3px solid #1f2933;min-height:330px}
.graph-grid-lines{position:absolute;inset:0 0 42px;display:flex;flex-direction:column;justify-content:space-between;pointer-events:none}.graph-grid-lines span{border-top:1px solid #d4dde3}
.graph-bars{position:absolute;inset:0 5% 0;display:flex;justify-content:space-around;align-items:flex-end}.graph-bar-column{height:100%;width:min(38%,170px);display:grid;grid-template-rows:minmax(0,1fr) 42px;align-items:center}
.graph-bar-stage{position:relative;width:100%;height:100%;display:flex;align-items:flex-end;justify-content:center}.graph-bar-value{position:absolute;left:0;right:0;z-index:2;font-weight:800;color:#173f5f;text-align:center}.graph-bar{width:min(100%,110px);background:#4b87b5;border:3px solid #173f5f;border-bottom:0}
.graph-drop-slot{display:flex;align-items:center;justify-content:center;padding:7px 10px;border:2px dashed #7a8f9d;border-radius:8px;background:#f7fafc;color:#52616b;text-align:center;font-weight:700}.graph-drop-slot.active{cursor:pointer;border-color:#246b9b;background:#eef7fc}.graph-drop-slot.filled{border-style:solid;border-color:#2d6a4f;background:#edf8f1;color:#173f2a}
.graph-category-slot{width:min(100%,150px);min-height:36px;margin-top:6px}.graph-scale-placement{display:flex;margin:10px 0 0 64px}.graph-scale-slot{width:min(100%,360px);min-height:40px}
.graph-choice-bank{margin-top:16px;margin-bottom:10px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.graph-choice{width:100%;min-height:52px;padding:9px 12px;border:2px solid #246b9b;border-radius:9px;background:#fff;color:#18384d;font-weight:750}.graph-choice.selected{background:#dceef9;outline:3px solid #f4a261}.graph-choice-bounce{animation:graph-choice-bounce .42s ease}@keyframes graph-choice-bounce{0%,100%{transform:translateX(0)}25%{transform:translateX(-12px)}55%{transform:translateX(10px)}78%{transform:translateX(-5px)}}
.graph-status{min-height:1.5em;color:#7b3f00;font-weight:750}.graph-status.complete{color:#1f6848}
@media(max-width:720px){.graph-builder{padding:14px 10px 18px}.graph-body{grid-template-columns:48px 42px minmax(230px,1fr);min-height:290px}.graph-plot{min-height:290px}.graph-choice-bank{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.graph-choice-bounce{animation:none}}

/* v0.15.7 — source-faithful multi-response and extended writing tasks. */
.separate-response-list {
  border-left-color:var(--orange)
}
.separate-response-row {
  display:grid;
  grid-template-columns:2rem minmax(0,1fr);
  align-items:start;
  gap:12px;
  margin:20px 0
}
.separate-response-row>strong {
  padding-top:10px;
  font-size:1.15rem;
  color:var(--dark)
}
.separate-response-row .response-shell,
.separate-response-row textarea,
.writing-task-response,
.writing-task-response .response-shell,
.writing-task-response textarea {
  display:block;
  width:100%
}
.writing-task-box {
  border-left-color:var(--orange)
}
.writing-task-box .block-heading {
  margin-top:0
}
.writing-task-response {
  margin-top:20px
}
.sequence-input-row {
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-top:18px;
  font-weight:700
}
.sequence-input-row .response-shell.inline {
  display:inline-block;
  flex:1 1 190px;
  min-width:190px
}
.sequence-input-row input {
  width:100%;
  min-width:0;
  background:#fff
}
@media(max-width:600px) {
  .separate-response-row { grid-template-columns:1.6rem minmax(0,1fr); gap:8px }
  .sequence-input-row { align-items:stretch; flex-direction:column }
  .sequence-input-row .response-shell.inline { width:100%; flex:auto }
}

/* v0.15.9 — source-declared cause/effect grouping. */
.cause-effect-pair {
  margin:24px 0;
  padding:14px 18px;
  border:2px solid var(--line);
  border-radius:12px;
  background:#fff
}
.cause-effect-pair p { margin:0 }
.cause-effect-pair p + p { margin-top:10px }

/* Mitosis Phase Two preservation repairs */
.blue-guide-box{background:#eef7ff;border:2px solid #2b6fb3;border-left:7px solid #2b6fb3;}
.blue-guide-box .blue-guide-lead{font-weight:800;color:#174f86;margin-bottom:.2rem;}
.conceptual-model-box{background:#fff;}
.conceptual-model{display:flex;flex-direction:column;align-items:center;gap:8px;}
.conceptual-model .audio-text-row{width:min(820px,100%);}
.conceptual-step{border:2px solid var(--line);border-radius:10px;padding:14px 18px;text-align:center;font-weight:700;background:#fff;width:100%;}
.conceptual-arrow{font-size:1.55rem;line-height:1;color:var(--green);font-weight:800;}

/* Mitosis targeted interaction and scaffold repair v0.15.13.2 */
.numbered-conceptual-model{display:flex;flex-direction:column;gap:18px}.numbered-conceptual-model .audio-text-row{align-items:center}.numbered-conceptual-model .conceptual-step{display:flex;gap:14px;align-items:flex-start;border:2px solid #b7c5bd;border-radius:14px;padding:16px 18px;background:#fff;width:100%}.conceptual-number{font-weight:800;min-width:2.1rem}.sentence-support-box{margin:18px 0;padding:18px 20px;border:3px solid #2f73b8;border-left-width:10px;border-radius:16px;background:#eef7ff}.sentence-support-box h4{margin:0 0 10px;font-size:1.2em}.sentence-support-lead{font-weight:700}.sentence-starters p{margin:12px 0}.movable-arrow-bank{display:flex;gap:18px;margin-top:14px}.movable-arrow{font-size:2.2rem;line-height:1;padding:10px 20px;border:3px solid #2364a8;border-radius:14px;background:white;cursor:grab}.movable-arrow.placed{opacity:.4}.movable-arrow-image-host{position:relative}.arrow-snap-target{position:absolute;top:42%;width:18%;height:22%;border:2px dashed rgba(35,100,168,.45);border-radius:12px;display:flex;align-items:center;justify-content:center;z-index:6}.arrow-snap-target.left{left:7%}.arrow-snap-target.right{right:7%}.placed-arrow{font-size:4rem;font-weight:900;color:#111;background:rgba(255,255,255,.75);border-radius:10px;padding:0 8px}.movable-arrow-status{margin-top:12px;font-weight:700}.blue-guide-box .grouped-list-audio .audio-text-content{width:100%}

/* v0.15.13.3: grouped blue-guide audio and numbered conceptual-model rows */
.blue-guide-box .grouped-list-audio{align-items:flex-start;}
.blue-guide-box .grouped-list-audio>.inline-hear{flex:0 0 auto;margin-left:auto;}
.numbered-conceptual-model .numbered-model-row{display:flex;align-items:center;gap:12px;width:min(920px,100%);}
.numbered-conceptual-model .numbered-model-row .conceptual-step{flex:1;display:flex;align-items:flex-start;gap:14px;margin:0;}
.numbered-conceptual-model .numbered-model-row>.inline-hear{flex:0 0 auto;}
.numbered-conceptual-model .conceptual-number{font-weight:800;min-width:2.1rem;}
.numbered-conceptual-model .conceptual-step-text{display:inline;}

/* v0.15.13.4: force numbered Whole Story into one visual/audio row */
.numbered-conceptual-model .numbered-model-row{display:flex!important;align-items:center!important;gap:12px!important;width:min(980px,100%)!important;}
.numbered-conceptual-model .numbered-model-row .audio-text-content{display:block!important;flex:1 1 auto!important;min-width:0!important;}
.numbered-conceptual-model .numbered-step-line{display:flex!important;flex-direction:row!important;align-items:baseline!important;gap:12px!important;width:100%!important;margin:0!important;}
.numbered-conceptual-model .conceptual-number{display:inline-block!important;flex:0 0 auto!important;min-width:2rem!important;}
.numbered-conceptual-model .conceptual-step-text{display:inline!important;flex:1 1 auto!important;}
.numbered-conceptual-model .numbered-model-row>.inline-hear{flex:0 0 auto!important;margin-left:8px!important;}


.sequence-drag-layout{display:grid;grid-template-columns:minmax(220px,1fr) minmax(240px,1.2fr);gap:24px;align-items:start;margin-top:10px}
.sequence-bank-column h4,.sequence-target-column h4{margin:0 0 10px 0;font-size:1.05rem;color:#2f5b44}
.sequence-card-bank,.sequence-slot-column{display:flex;flex-direction:column;gap:12px}
.sequence-choice-card,.sequence-drop-slot{border:2px solid #d0892a;border-radius:14px;background:#fffaf2;padding:14px 16px;font-weight:700;line-height:1.35;box-shadow:0 1px 2px rgba(0,0,0,.05)}
.sequence-choice-card{cursor:grab}
.sequence-choice-card.placed{margin:0}
.sequence-drop-slot{min-height:78px;border-style:dashed;background:#fcfcfc;display:flex;align-items:center;justify-content:center}
.sequence-slot-placeholder{color:#6a6a6a;font-style:italic;text-align:center}
.sequence-slot-label{font-weight:700;margin-bottom:6px;color:#2f5b44}
.sequence-progression-arrow{text-align:center;font-size:28px;font-weight:900;color:#d0892a;line-height:1;margin:2px 0 4px}
.sequence-result-row{margin-top:18px;padding-top:12px;border-top:2px solid #e7eced}
.sequence-choice-prompt{margin:0 0 8px 0}
.sequence-choice-buttons{display:flex;flex-wrap:wrap;gap:12px}
.sequence-result-choice{border:2px solid #2e69b3;border-radius:999px;padding:10px 16px;font:inherit;font-weight:700;background:#fff;cursor:pointer}
.sequence-result-choice.selected{background:#eaf3ff}
.sequence-bank-empty{margin:0;color:#555;font-style:italic}
@media (max-width: 800px){.sequence-drag-layout{grid-template-columns:1fr}}