.entrance-grid, .chapter-grid, .step-grid, .case-grid { display: grid; gap: var(--space-5); }
.entrance-grid { grid-template-columns: repeat(3, 1fr); }
.entrance-card { position: relative; display: flex; min-height: 15rem; padding: var(--space-6); color: var(--color-text); border: 1px solid var(--color-border); border-top: 0.45rem solid; border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-sm); flex-direction: column; text-decoration: none; }
.entrance-card:hover { color: var(--color-text); box-shadow: var(--shadow-md); transform: translateY(-0.15rem); }
.entrance-card > span { color: var(--color-muted); font-size: 0.85rem; font-weight: 800; letter-spacing: 0.09em; }
.entrance-card > strong { margin-block: auto; font-size: 1.35rem; line-height: 1.5; }
.entrance-card > small { color: var(--color-muted); }
.accent-mint { border-top-color: var(--color-mint-500); }
.accent-gold { border-top-color: var(--color-gold-500); }
.accent-blue { border-top-color: var(--color-blue-500); }
.chapter-grid { grid-template-columns: repeat(3, 1fr); }
.chapter-card { padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: #fff; }
.chapter-card h2 { margin: 0 0 var(--space-3); font-size: 1.25rem; }
.chapter-number { margin: 0 0 var(--space-2); color: var(--color-muted); font-size: 0.78rem; font-weight: 800; }
.status { margin-bottom: 0; }
.status span { display: inline-block; padding: 0.2rem 0.55rem; color: #374d5e; border-radius: 100vmax; background: #e5edf1; font-size: 0.72rem; font-weight: 800; }
.search-panel { border-top: 1px solid var(--color-border); }
.search-form label, .glossary-filter label { display: block; margin-bottom: var(--space-2); font-weight: 800; }
.search-row { display: flex; gap: var(--space-2); max-width: 44rem; }
.search-row input { width: 100%; min-width: 0; min-height: 3rem; padding: 0.65rem 0.8rem; border: 2px solid #667b8b; border-radius: var(--radius-sm); }
.search-row button, .print-button, .button-link, .toolbox-toggle { padding: 0.65rem 1rem; color: #fff; border: 2px solid var(--color-navy-900); border-radius: var(--radius-sm); background: var(--color-navy-900); font-weight: 800; cursor: pointer; }
.secondary-button { padding: 0.65rem 1rem; color: var(--color-navy-900); border: 2px solid var(--color-navy-900); border-radius: var(--radius-sm); background: #fff; font-weight: 800; cursor: pointer; }
.toolbox-toggle[aria-pressed="true"] { color: var(--color-navy-900); background: var(--color-mint-100); }
.button-link { display: inline-block; text-decoration: none; }
.form-hint { color: var(--color-muted); font-size: 0.88rem; }
.search-results { max-width: 44rem; margin-top: var(--space-5); }
.search-results ul { padding: 0; list-style: none; }
.search-results li { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding-block: var(--space-3); border-bottom: 1px solid var(--color-border); }
.search-results li span { flex: 0 0 auto; color: var(--color-muted); font-size: 0.8rem; }
.search-results li div { min-width: 0; }
.search-results li p { margin: var(--space-1) 0 0; color: var(--color-muted); font-size: 0.88rem; }
.review-progress { display: grid; grid-template-columns: minmax(0, 1fr) minmax(12rem, 20rem) auto; align-items: center; gap: var(--space-5); margin-bottom: var(--space-3); padding: var(--space-5); border: 1px solid #8acabd; border-radius: var(--radius-md); background: var(--color-mint-100); }
.review-progress h2, .review-progress p { margin-block: var(--space-1); }
.review-progress progress { width: 100%; height: 1.1rem; accent-color: var(--color-navy-900); }
.review-list { display: grid; gap: var(--space-4); padding: 0; list-style: none; }
.review-list li { display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.review-list h3 { display: inline; margin: 0 0 0 var(--space-3); }
.review-list p { margin: var(--space-2) 0 0 3.3rem; color: var(--color-muted); }
.review-list .review-prompt { color: var(--color-text); }
.review-list .review-links { display: flex; gap: var(--space-4); }
.review-links a { font-weight: 800; }
.review-step { display: inline-grid; width: 2.5rem; height: 2.5rem; color: #fff; border-radius: 50%; background: var(--color-navy-900); font-weight: 800; place-items: center; }
.check-label { flex: 0 0 auto; padding: var(--space-3); font-weight: 700; }
.check-label input { width: 1.25rem; height: 1.25rem; vertical-align: middle; }
.callout, .action-box, .holding-card { margin-top: var(--space-7); padding: clamp(1.5rem, 4vw, 2.5rem); border-radius: var(--radius-lg); background: var(--color-mint-100); }
.callout h2, .action-box h2, .holding-card h2 { margin-top: 0; }
.compact-callout { margin: 0 0 var(--space-6); }
.participant-start { padding-bottom: 0; }
.participant-start-panel { padding: clamp(1.5rem, 4vw, 2.75rem); border: 1px solid #8acabd; border-radius: var(--radius-lg); background: var(--color-mint-100); }
.participant-start-panel h2 { margin-top: 0; }
.participant-route { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); margin: var(--space-5) 0; padding: 0; list-style: none; }
.participant-route li { display: grid; grid-template-columns: auto 1fr; gap: var(--space-2) var(--space-3); align-items: center; padding: var(--space-4); border: 1px solid #9ccdc3; border-radius: var(--radius-md); background: #fff; }
.participant-route span { display: grid; width: 2rem; height: 2rem; grid-row: 1 / 3; color: #fff; border-radius: 50%; background: var(--color-navy-900); font-weight: 800; place-items: center; }
.participant-route strong, .participant-route small { display: block; }
.participant-route small { color: var(--color-muted); line-height: 1.5; }
.participant-actions { display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; }
.learning-outcomes { margin-bottom: var(--space-7); padding: var(--space-5); border-left: 0.4rem solid var(--color-mint-500); background: var(--color-canvas); }
.learning-outcomes h2 { margin-top: 0; font-size: 1.35rem; }
.chapter-subnav { position: sticky; z-index: 5; top: 0; border-bottom: 1px solid var(--color-border); background: rgb(255 255 255 / 96%); }
.chapter-subnav .content-width { display: flex; gap: var(--space-2); overflow-x: auto; padding-block: var(--space-2); }
.chapter-subnav a { flex: 0 0 auto; min-height: 2.75rem; padding: 0.55rem 0.75rem; border-radius: var(--radius-sm); font-size: 0.84rem; font-weight: 800; text-decoration: none; }
.chapter-subnav a:hover { background: var(--color-mint-100); }
.chapter-intro { padding-bottom: var(--space-7); }
.key-message { max-width: 46rem; margin: 0 0 var(--space-7); padding-left: var(--space-5); border-left: 0.45rem solid var(--color-gold-500); font-family: var(--font-serif); font-size: clamp(1.35rem, 3vw, 2.1rem); font-weight: 700; line-height: 1.6; }
.step-grid { grid-template-columns: repeat(3, 1fr); }
.step-grid article { padding: var(--space-5); border-top: 0.3rem solid var(--color-mint-500); background: var(--color-canvas); }
.step-grid article > span, .reflection-sequence article > span { display: grid; width: 2.4rem; height: 2.4rem; color: #fff; border-radius: 50%; background: var(--color-navy-900); font-weight: 800; place-items: center; }
.lesson-stack { display: grid; gap: var(--space-7); }
.lesson-section { position: relative; max-width: 54rem; padding-left: clamp(0rem, 7vw, 6rem); }
.lesson-number { color: var(--color-mint-500); font-family: var(--font-serif); font-size: 2.8rem; font-weight: 800; line-height: 1; }
.lesson-section h2 { margin-top: 0; }
.lesson-summary { color: var(--color-navy-800); font-size: 1.15rem; font-weight: 800; }
.lesson-section li { margin-block: var(--space-2); }
.concept-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); margin-top: var(--space-5); }
.concept-grid > div { padding: var(--space-4); border-top: 0.25rem solid var(--color-blue-500); background: var(--color-blue-100); }
.concept-grid h3 { margin: 0 0 var(--space-2); font-size: 1rem; }
.concept-grid p { margin: 0; }
.field-tool { max-width: 54rem; margin-top: var(--space-8); padding: clamp(1.5rem, 4vw, 2.75rem); color: #fff; border-radius: var(--radius-lg); background: var(--color-navy-900); }
.field-tool .eyebrow { color: #8cebdc; }
.field-tool h2 { margin-top: 0; }
.field-tool ol { display: grid; gap: var(--space-3); padding-left: 1.5rem; }
.field-tool li::marker { color: var(--color-mint-500); font-weight: 800; }
.case-grid { grid-template-columns: 1fr 1fr; }
.case-grid > div { padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: #fff; }
.case-grid h3 { margin-top: 0; }
.case-grid .avoid { border-color: #e2a8a4; background: var(--color-danger-100); }
.case-grid .do { border-color: #93d3b2; background: var(--color-success-100); }
.case-questions { margin-top: var(--space-5); padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.case-questions h3 { margin-top: 0; }
.details-stack { display: grid; gap: var(--space-3); }
details { border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: #fff; }
summary { padding: var(--space-4) var(--space-5); font-weight: 800; cursor: pointer; }
details > div { padding: 0 var(--space-5) var(--space-4); }
.source-trace { margin-top: var(--space-6); color: var(--color-muted); font-size: 0.78rem; }
.self-check-list { display: grid; gap: var(--space-3); }
.self-check-list article { padding: var(--space-4) var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: #fff; }
.self-check-list label { display: flex; align-items: flex-start; gap: var(--space-3); font-weight: 800; cursor: pointer; }
.self-check-list input { flex: 0 0 auto; width: 1.35rem; height: 1.35rem; margin-top: 0.25rem; }
.self-check-list p { margin: var(--space-2) 0 0 2.1rem; color: var(--color-muted); }
.next-connection { padding: clamp(1.5rem, 4vw, 3rem); border: 1px solid #8acabd; border-radius: var(--radius-lg); background: var(--color-mint-100); }
.next-connection h2 { margin-top: 0; }
.problem-list, .tool-list { display: grid; gap: var(--space-5); }
.problem-list article, .tool-list article { padding: clamp(1.5rem, 4vw, 2.5rem); border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.problem-list h2, .tool-list h2 { margin-top: 0; }
.tag-row { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.tag-row a { padding: 0.3rem 0.65rem; color: var(--color-navy-900); border-radius: 100vmax; background: var(--color-mint-100); font-size: 0.85rem; font-weight: 800; text-decoration: none; }
.text-link { font-weight: 800; }
.tool-list ol { display: grid; gap: var(--space-2); }
.tool-list button + button { margin-left: var(--space-2); }
.my-toolbox { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(14rem, 1fr); gap: var(--space-4) var(--space-7); align-items: start; padding-block: var(--space-6); }
.my-toolbox h2, .my-toolbox p { margin-block: var(--space-1); }
.my-toolbox ul { min-height: 2rem; margin: 0; }
.my-toolbox > button { justify-self: start; }
.glossary-filter { margin-bottom: var(--space-6); padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-canvas); }
.glossary-list { display: grid; gap: var(--space-5); }
.glossary-list > div { padding: var(--space-5); border-left: 0.35rem solid var(--color-gold-500); background: var(--color-canvas); }
.glossary-list dt { margin-bottom: var(--space-3); font-size: 1.4rem; font-weight: 800; }
.glossary-list dd { margin: var(--space-2) 0; }
.reflection-sequence { display: grid; gap: var(--space-5); }
.reflection-sequence article { position: relative; padding: var(--space-5) var(--space-5) var(--space-5) 5rem; border-left: 2px solid var(--color-border); }
.reflection-sequence article > span { position: absolute; top: var(--space-5); left: var(--space-4); }
.reflection-sequence h2 { margin-top: 0; }
.learning-visual { position: relative; margin: var(--space-7) 0 0; padding: clamp(1.35rem, 3.5vw, 2.4rem); overflow: hidden; border: 1px solid #a9c9d7; border-radius: var(--radius-lg); background: linear-gradient(145deg, #f8fcfd 0%, var(--color-blue-100) 100%); box-shadow: var(--shadow-sm); }
.learning-visual::after { position: absolute; z-index: 0; right: -4rem; bottom: -4rem; width: 11rem; height: 11rem; border: 1.4rem solid rgb(59 203 179 / 14%); border-radius: 50%; content: ""; }
.learning-visual > * { position: relative; z-index: 1; }
.learning-visual figcaption { max-width: 50rem; }
.learning-visual figcaption .eyebrow { color: var(--color-blue-500); }
.learning-visual figcaption h2 { margin: 0; font-size: clamp(1.35rem, 2.6vw, 2rem); }
.learning-visual figcaption p:last-child { margin-bottom: 0; color: var(--color-muted); }
.visual-track { display: flex; align-items: stretch; gap: var(--space-3); margin-top: var(--space-5); }
.visual-node { display: flex; flex: 1 1 0; min-width: 0; flex-direction: column; justify-content: center; padding: var(--space-4); border: 1px solid #b9ccd6; border-top: 0.3rem solid var(--color-blue-500); border-radius: var(--radius-sm); background: #fff; text-align: center; }
.visual-node strong { display: block; color: var(--color-navy-900); font-size: 1.02rem; line-height: 1.45; }
.visual-node small { display: block; margin-top: var(--space-2); color: var(--color-muted); line-height: 1.55; }
.visual-node.is-mint { border-top-color: var(--color-mint-500); background: var(--color-mint-100); }
.visual-node.is-gold { border-top-color: var(--color-gold-500); background: var(--color-gold-100); }
.visual-node.is-risk { border-top-color: var(--color-danger-700); background: var(--color-danger-100); }
.visual-node.is-success { border-top-color: var(--color-success-700); background: var(--color-success-100); }
.visual-index { display: inline-grid; align-self: center; min-width: 2rem; height: 2rem; margin-bottom: var(--space-2); padding-inline: 0.4rem; color: #fff; border-radius: 100vmax; background: var(--color-navy-900); font-size: 0.76rem; font-weight: 800; line-height: 1; place-items: center; }
.visual-arrow { display: grid; flex: 0 0 1.6rem; align-self: center; color: var(--color-blue-500); font-size: 1.6rem; font-weight: 900; place-items: center; }
.visual-takeaway { margin: var(--space-5) 0 0; padding: var(--space-3) var(--space-4); border-left: 0.3rem solid var(--color-gold-500); background: rgb(255 255 255 / 76%); }
.visual-roadmap { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-3); margin-top: var(--space-5); }
.visual-stage { padding: var(--space-4); border: 1px solid #b9ccd6; border-radius: var(--radius-md); background: #fff; }
.visual-stage:nth-child(2) { background: var(--color-mint-100); }
.visual-stage:nth-child(3) { background: var(--color-gold-100); }
.visual-stage:nth-child(4) { background: var(--color-blue-100); }
.visual-stage > span { display: inline-block; margin-bottom: var(--space-2); color: var(--color-muted); font-size: 0.75rem; font-weight: 800; letter-spacing: 0.08em; }
.visual-stage strong { display: block; color: var(--color-navy-900); }
.visual-stage ul { margin: var(--space-3) 0 0; padding-left: 1.25rem; }
.visual-stage li { margin-block: var(--space-1); font-size: 0.9rem; }
.visual-lanes { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); margin-top: var(--space-5); }
.visual-lane { padding: var(--space-4); border: 1px solid #b9ccd6; border-radius: var(--radius-md); background: #fff; }
.visual-lane.is-risk { border-color: #d8a4a0; background: var(--color-danger-100); }
.visual-lane.is-success { border-color: #93d3b2; background: var(--color-success-100); }
.visual-lane h3 { margin: 0 0 var(--space-3); font-size: 1.05rem; }
.visual-lane .visual-track { margin-top: 0; }
.visual-lane .visual-node { padding: var(--space-3); background: rgb(255 255 255 / 78%); }
.visual-chips { display: flex; gap: var(--space-2); flex-wrap: wrap; justify-content: center; margin-top: var(--space-4); }
.visual-chip { padding: 0.4rem 0.7rem; border: 1px solid #9eb8c7; border-radius: 100vmax; background: #fff; font-size: 0.84rem; font-weight: 800; }
.annotation-guide { margin-block: var(--space-5) 0; padding: var(--space-3) var(--space-4); color: var(--color-navy-800); border-left: 0.25rem solid var(--color-mint-500); background: var(--color-mint-100); font-size: 0.88rem; }
.annotation-guide > span { display: inline-grid; width: 1.25rem; height: 1.25rem; margin-right: 0.25rem; color: #fff; border-radius: 50%; background: var(--color-navy-900); font-weight: 800; place-items: center; }
.term-note { display: inline; }
.term-note__trigger { display: inline; padding: 0 0.05em; color: inherit; border: 0; border-bottom: 0.12em dotted currentcolor; background: transparent; font: inherit; font-weight: 700; line-height: inherit; cursor: help; }
.term-note__trigger::after { content: "?"; display: inline-grid; width: 1.05rem; height: 1.05rem; margin-left: 0.15rem; color: #fff; border-radius: 50%; background: var(--color-navy-800); font-size: 0.68rem; font-weight: 800; line-height: 1; vertical-align: 0.18em; place-items: center; }
.term-note__trigger:focus-visible { outline-color: var(--color-navy-900); }
.term-note__popup { position: fixed; z-index: 80; display: block; padding: 0.8rem 0.9rem; color: #fff; border: 1px solid #496171; border-radius: var(--radius-sm); background: var(--color-navy-950); box-shadow: var(--shadow-md); font-size: 0.86rem; font-weight: 500; line-height: 1.65; opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(0.25rem); transition: opacity 120ms ease, transform 120ms ease, visibility 120ms; }
.term-note:hover .term-note__popup, .term-note__trigger[aria-expanded="true"] + .term-note__popup, .term-note.is-open .term-note__popup { opacity: 1; visibility: visible; transform: translateY(0); }
@media (max-width: 56rem) {
  .entrance-grid, .chapter-grid { grid-template-columns: 1fr 1fr; }
  .step-grid { grid-template-columns: 1fr; }
  .concept-grid { grid-template-columns: 1fr; }
  .review-progress, .my-toolbox { grid-template-columns: 1fr; }
  .visual-roadmap { grid-template-columns: 1fr 1fr; }
  .visual-track { display: grid; grid-template-columns: 1fr; }
  .participant-route { grid-template-columns: 1fr; }
  .visual-arrow { transform: rotate(90deg); }
}
@media (max-width: 38rem) {
  .entrance-grid, .chapter-grid, .case-grid { grid-template-columns: 1fr; }
  .search-row, .review-list li { align-items: stretch; flex-direction: column; }
  .search-row button { width: 100%; }
  .search-results li { align-items: flex-start; flex-direction: column; }
  .review-list p { margin-left: 0; }
  .review-list .review-links { flex-wrap: wrap; }
  .tool-list button { width: 100%; }
  .tool-list button + button { margin: var(--space-2) 0 0; }
  .lesson-section { padding-left: 0; }
  .chapter-subnav .content-width { flex-wrap: wrap; overflow-x: visible; }
  .annotation-guide { margin-top: var(--space-4); }
  .learning-visual { padding: var(--space-4); }
  .visual-roadmap, .visual-lanes { grid-template-columns: 1fr; }
  .participant-actions { align-items: stretch; flex-direction: column; }
  .participant-actions .button-link { text-align: center; }
}