:root {
  --ink: #111;
  --paper: #fffaf0;
  --surface: #fff;
  --muted: #5b5750;
  --line: 3px solid var(--ink);
  --shadow: 6px 6px 0 var(--ink);
  --shadow-sm: 3px 3px 0 var(--ink);
  --yellow: #ffe15c;
  --blue: #8bd3ff;
  --green: #98f5a8;
  --pink: #ff9ec4;
  --orange: #ffb35c;
  --violet: #cdb7ff;
  --danger: #ff6f6f;
  --radius: 4px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(17, 17, 17, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(17, 17, 17, 0.06) 1px, transparent 1px),
    var(--paper);
  background-size: 24px 24px;
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.58;
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

code,
pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

:focus-visible {
  outline: 4px solid var(--pink);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 100;
  padding: 10px 14px;
  border: var(--line);
  background: var(--yellow);
  font-weight: 900;
}

.skip-link:focus {
  top: 16px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px clamp(14px, 3vw, 32px);
  border-bottom: var(--line);
  background: var(--surface);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: var(--line);
  background: var(--yellow);
  box-shadow: var(--shadow-sm);
  font-weight: 950;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  line-height: 1;
  font-size: 1.05rem;
}

.brand small {
  color: var(--muted);
  font-weight: 750;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-control {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 900;
}

.search-control input {
  width: min(32vw, 360px);
  min-height: 44px;
  padding: 10px 12px;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.menu-button,
.lesson-nav a {
  min-height: 44px;
  padding: 9px 12px;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  font-weight: 900;
  text-decoration: none;
  cursor: pointer;
}

.menu-button {
  display: none;
}

.manual-shell {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  padding: 24px clamp(14px, 3vw, 32px) 42px;
}

.sidebar {
  position: sticky;
  top: 92px;
}

.sidebar-card,
.lesson,
.day-divider {
  border: var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.sidebar-card {
  max-height: calc(100svh - 116px);
  overflow: auto;
  padding: 14px;
}

.sidebar h2 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.lesson-nav {
  display: grid;
  gap: 8px;
}

.lesson-nav a {
  box-shadow: none;
  background: var(--paper);
  font-size: 0.92rem;
}

.lesson-nav a.active,
.lesson-nav a:hover {
  background: var(--yellow);
}

.course-content {
  display: grid;
  gap: 24px;
}

.lesson {
  padding: clamp(18px, 3vw, 32px);
}

.hero {
  background: linear-gradient(135deg, var(--blue), var(--surface) 48%, var(--yellow));
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 22px;
  align-items: start;
}

.kicker {
  width: fit-content;
  margin: 0 0 12px;
  padding: 5px 9px;
  border: 2px solid var(--ink);
  background: var(--green);
  font-size: 0.78rem;
  font-weight: 950;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  max-width: 980px;
  font-size: clamp(2.2rem, 5vw, 5rem);
}

h2 {
  font-size: clamp(1.75rem, 3vw, 3rem);
}

h3 {
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
}

.lead,
.lesson-header > p {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.05rem;
}

.course-map {
  display: grid;
  gap: 12px;
}

.course-map article,
.note,
.procedure,
.teaching-card,
.block,
.exercise,
.screenshot-slot,
.concept-panel article,
.finance-example,
.code-card,
.metadata-table-wrap,
.module-brief article,
.quick-grid article,
.planning-grid article,
.procedure-card,
.quiz-grid details,
.profile-grid article,
.memo-table-wrap {
  border: var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.course-map article {
  min-height: 118px;
  padding: 14px;
}

.course-map article:nth-child(1),
.note.objective,
.procedure {
  background: var(--yellow);
}

.course-map article:nth-child(2),
.exercise {
  background: var(--green);
}

.course-map article:nth-child(3),
.teaching-card,
.block.warning {
  background: var(--pink);
}

.course-map article:nth-child(4),
.note.teacher {
  background: var(--violet);
}

.course-map span {
  display: inline-grid;
  min-width: 36px;
  min-height: 36px;
  place-items: center;
  margin-bottom: 8px;
  border: 2px solid var(--ink);
  background: var(--surface);
  font-weight: 950;
}

.lesson-header {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 2px solid var(--ink);
}

.learning-grid,
.lesson-blocks,
.step-layout,
.concept-panel,
.shot-grid,
.module-brief,
.quick-grid,
.planning-grid,
.procedure-grid,
.quiz-grid,
.profile-grid {
  display: grid;
  gap: 16px;
  margin: 18px 0;
}

.learning-grid,
.step-layout,
.lesson-blocks {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.concept-panel {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.module-brief {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.quick-grid,
.planning-grid,
.procedure-grid,
.profile-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.quiz-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.shot-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.note,
.procedure,
.teaching-card,
.block,
.exercise,
.concept-panel article,
.finance-example,
.code-card,
.metadata-table-wrap,
.module-brief article,
.quick-grid article,
.planning-grid article,
.procedure-card,
.quiz-grid details,
.profile-grid article,
.memo-table-wrap {
  padding: 16px;
}

.module-brief article {
  display: grid;
  gap: 6px;
  align-content: start;
}

.module-brief strong {
  width: fit-content;
  padding: 4px 8px;
  border: 2px solid var(--ink);
  background: var(--yellow);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.module-brief span {
  color: var(--muted);
  font-weight: 760;
}

.quick-grid article:nth-child(4n + 1),
.planning-grid article:nth-child(4n + 1),
.procedure-card:nth-child(4n + 1),
.profile-grid article:nth-child(4n + 1) {
  background: var(--blue);
}

.quick-grid article:nth-child(4n + 2),
.planning-grid article:nth-child(4n + 2),
.procedure-card:nth-child(4n + 2),
.profile-grid article:nth-child(4n + 2) {
  background: var(--yellow);
}

.quick-grid article:nth-child(4n + 3),
.planning-grid article:nth-child(4n + 3),
.procedure-card:nth-child(4n + 3),
.profile-grid article:nth-child(4n + 3) {
  background: var(--green);
}

.quick-grid article:nth-child(4n),
.planning-grid article:nth-child(4n),
.procedure-card:nth-child(4n),
.profile-grid article:nth-child(4n) {
  background: var(--violet);
}

.quiz-grid details {
  background: var(--paper);
}

.quiz-grid summary {
  cursor: pointer;
  font-weight: 950;
}

.quiz-grid p {
  margin-bottom: 0;
  padding-top: 10px;
  border-top: 2px solid var(--ink);
}

.procedure ol,
.block ul,
.quick-grid ul,
.planning-grid ol,
.procedure-card ol,
.profile-grid ul {
  padding-left: 22px;
}

li + li {
  margin-top: 8px;
}

.flow-diagram {
  display: grid;
  grid-template-columns: repeat(7, auto);
  gap: 8px;
  align-items: center;
  margin: 20px 0;
  overflow-x: auto;
}

.flow-diagram span,
.flow-diagram strong {
  min-width: max-content;
  padding: 12px;
  border: var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.flow-diagram span {
  background: var(--blue);
  font-weight: 950;
}

.flow-diagram strong {
  background: var(--yellow);
  font-size: 0.88rem;
}

.screenshot-slot {
  margin: 18px 0;
  overflow: hidden;
}

.screenshot-slot img {
  display: block;
  width: 100%;
  height: auto;
  border-bottom: var(--line);
}

.schema-inline {
  background: var(--surface);
}

.schema-inline img {
  aspect-ratio: 16 / 9;
  background: var(--paper);
  object-fit: contain;
}

.screenshot-slot figcaption {
  margin: 0;
  padding: 12px 14px;
  background: var(--surface);
  color: var(--muted);
  font-weight: 750;
}

.day-divider {
  padding: 28px;
  background: var(--orange);
}

.day-divider.day-two {
  background: var(--violet);
}

.day-divider p {
  margin: 0 0 8px;
  font-weight: 950;
  text-transform: uppercase;
}

.presenter-slider {
  background: linear-gradient(135deg, var(--surface), var(--yellow));
}

.service-slider {
  background: linear-gradient(135deg, var(--surface), var(--green));
}

.object-slider {
  background: linear-gradient(135deg, var(--surface), var(--violet));
}

.slider-status {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding: 12px 14px;
  border: var(--line);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
}

.slider-status strong,
.slider-status span {
  font-weight: 900;
}

.slider-status span {
  color: var(--muted);
}

.slider-stage {
  position: relative;
  min-height: min(62svh, 620px);
  border: var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.presenter-slide {
  display: none;
  min-height: min(62svh, 620px);
  grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
  gap: clamp(18px, 4vw, 46px);
  align-items: stretch;
  padding: clamp(20px, 4vw, 48px);
}

.presenter-slide.is-active {
  display: grid;
}

.slide-copy {
  display: grid;
  align-content: center;
  gap: 14px;
}

.slide-copy h3 {
  max-width: 900px;
  font-size: clamp(2.4rem, 5vw, 5.8rem);
}

.slide-copy p,
.slide-copy li {
  max-width: 820px;
  font-size: clamp(1.05rem, 1.7vw, 1.5rem);
  font-weight: 760;
}

.slide-copy ul,
.slide-copy ol {
  margin: 0;
  padding-left: 24px;
}

.slide-demo {
  width: fit-content;
  max-width: 100%;
  padding: 10px 12px;
  border: 2px solid var(--ink);
  background: var(--yellow);
  box-shadow: var(--shadow-sm);
}

.slide-visual {
  display: grid;
  place-items: center;
  margin: 0;
  min-height: 280px;
  border: var(--line);
  background: var(--paper);
  overflow: hidden;
}

.slide-visual img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: contain;
}

.slider-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.slider-controls button,
.control-link,
.remote-controls button {
  min-height: 52px;
  padding: 12px 16px;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--yellow);
  box-shadow: var(--shadow-sm);
  color: var(--ink);
  font-weight: 950;
  text-decoration: none;
  cursor: pointer;
}

.slider-controls button:nth-child(2),
.remote-controls button:nth-child(2) {
  background: var(--green);
}

.control-link,
.remote-controls button:nth-child(3) {
  background: var(--pink);
}

.remote-body {
  min-height: 100svh;
}

.slider-page {
  min-height: 100svh;
}

.slider-shell {
  width: min(100%, 1480px);
  margin: 0 auto;
  padding: clamp(14px, 2vw, 28px);
}

.slider-page .presenter-slider {
  min-height: calc(100svh - clamp(28px, 4vw, 56px));
}

.intro-slider .lesson-header {
  margin-bottom: 14px;
  padding-bottom: 12px;
}

.intro-slider .lesson-header h1 {
  font-size: clamp(2.4rem, 4vw, 4.8rem);
}

.intro-slider .slider-stage,
.intro-slider .presenter-slide {
  min-height: min(58svh, 560px);
}

.intro-slider .presenter-slide {
  padding: clamp(18px, 3vw, 38px);
}

.intro-slider .slide-copy h3 {
  font-size: clamp(2rem, 4vw, 4.4rem);
}

.intro-slider .slide-copy p,
.intro-slider .slide-copy li {
  font-size: clamp(1rem, 1.45vw, 1.35rem);
}

.control-link.secondary {
  background: var(--surface);
}

.mobile-remote {
  display: grid;
  gap: 18px;
  width: min(100%, 720px);
  min-height: 100svh;
  margin: 0 auto;
  padding: clamp(18px, 5vw, 34px);
  align-content: center;
}

.mobile-remote h1 {
  font-size: clamp(2.4rem, 12vw, 5rem);
}

.remote-display {
  display: grid;
  gap: 8px;
  padding: 18px;
  border: var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.remote-display span {
  width: fit-content;
  padding: 6px 10px;
  border: 2px solid var(--ink);
  background: var(--green);
  font-weight: 950;
}

.remote-display strong {
  font-size: clamp(1.8rem, 9vw, 4.2rem);
  line-height: 1.05;
}

.remote-display small {
  color: var(--muted);
  font-weight: 850;
}

.remote-controls {
  display: grid;
  gap: 14px;
}

.remote-controls button {
  min-height: 88px;
  font-size: clamp(1.1rem, 5vw, 1.7rem);
}

.remote-note {
  padding: 14px;
  border: var(--line);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
  font-weight: 850;
}

.metadata-table-wrap,
.memo-table-wrap {
  overflow-x: auto;
  background: var(--surface);
}

table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

th,
td {
  padding: 12px;
  border: 2px solid var(--ink);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--ink);
  color: var(--surface);
}

code {
  padding: 2px 5px;
  border: 1px solid var(--ink);
  background: var(--paper);
  font-weight: 800;
}

.finance-example {
  background: var(--blue);
}

.finance-example dl {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0 0;
}

.finance-example div {
  padding: 12px;
  border: 2px solid var(--ink);
  background: var(--surface);
}

.finance-example dt {
  font-size: 0.8rem;
  font-weight: 950;
  text-transform: uppercase;
}

.finance-example dd {
  margin: 8px 0 0;
  font-size: 1.15rem;
  font-weight: 950;
}

.glossary-grid,
.schema-grid,
.capture-checklist {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.glossary-grid article,
.schema-grid article,
.capture-checklist label {
  border: var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.glossary-grid article,
.schema-grid article {
  padding: 14px;
}

.schema-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin-bottom: 12px;
  border: 2px solid var(--ink);
  background: var(--surface);
  object-fit: contain;
  cursor: zoom-in;
}

.schema-card h3,
.schema-card p {
  margin-bottom: 0;
}

.glossary-grid article:nth-child(3n + 1) {
  background: var(--yellow);
}

.glossary-grid article:nth-child(3n + 2) {
  background: var(--green);
}

.glossary-grid article:nth-child(3n) {
  background: var(--pink);
}

.schema-grid article:nth-child(4n + 1) {
  background: var(--blue);
}

.schema-grid article:nth-child(4n + 2) {
  background: var(--yellow);
}

.schema-grid article:nth-child(4n + 3) {
  background: var(--green);
}

.schema-grid article:nth-child(4n) {
  background: var(--violet);
}

.resource-link {
  width: fit-content;
  margin-top: 18px;
  padding: 12px 14px;
  border: var(--line);
  background: var(--yellow);
  box-shadow: var(--shadow-sm);
  font-weight: 900;
}

.resource-link a {
  text-decoration-thickness: 3px;
}

.test-card-page {
  min-height: 100vh;
}

.resource-hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 56px) clamp(16px, 4vw, 32px) 18px;
}

.resource-hero h1 {
  margin-top: 10px;
}

.resource-hero .lead {
  margin-top: 16px;
}

.test-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px clamp(16px, 4vw, 32px) 44px;
}

.test-card {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.test-card.success {
  background: var(--green);
}

.test-card.danger {
  background: var(--danger);
}

.test-card.warning {
  background: var(--orange);
}

.test-card.info {
  background: var(--blue);
}

.test-card.neutral {
  background: var(--violet);
}

.test-card h2 {
  font-size: 1.25rem;
}

.test-card p {
  margin: 0;
  font-weight: 780;
}

.card-number {
  padding: 12px;
  border: 2px solid var(--ink);
  background: var(--surface);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 1.08rem;
  font-weight: 950;
  letter-spacing: 1px;
  overflow-wrap: anywhere;
}

.test-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.test-meta span {
  padding: 5px 8px;
  border: 2px solid var(--ink);
  background: var(--surface);
  font-size: 0.82rem;
  font-weight: 950;
}

.copy-card-button,
.back-link {
  min-height: 44px;
  border: var(--line);
  border-radius: 0;
  background: var(--yellow);
  box-shadow: var(--shadow-sm);
  color: var(--ink);
  cursor: pointer;
  font-weight: 950;
}

.copy-card-button:hover,
.back-link:hover {
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0 var(--ink);
}

.copy-message {
  min-height: 22px;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 950;
}

.resource-note {
  max-width: 1180px;
  margin: 0 auto 44px;
  padding: 0 clamp(16px, 4vw, 32px);
}

.resource-note article {
  padding: 16px;
  border: var(--line);
  background: var(--yellow);
  box-shadow: var(--shadow-sm);
}

.back-link {
  display: inline-grid;
  width: fit-content;
  place-items: center;
  padding: 10px 14px;
  text-decoration: none;
}

.capture-checklist label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px;
  font-weight: 850;
}

.capture-checklist input {
  width: 20px;
  height: 20px;
  accent-color: var(--ink);
}

.screenshot-slot img,
.schema-card img {
  cursor: zoom-in;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 14px;
  padding: clamp(14px, 3vw, 34px);
  background: rgba(17, 17, 17, 0.88);
}

.lightbox.open {
  display: grid;
}

.lightbox-header {
  display: flex;
  justify-content: flex-end;
}

.lightbox-close {
  min-height: 44px;
  padding: 10px 14px;
  border: var(--line);
  background: var(--yellow);
  box-shadow: var(--shadow-sm);
  font-weight: 950;
  cursor: pointer;
}

.lightbox-image-wrap {
  display: grid;
  place-items: center;
  min-height: 0;
}

.lightbox img {
  max-width: 100%;
  max-height: 100%;
  border: var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  object-fit: contain;
}

.lightbox-caption {
  margin: 0 auto;
  max-width: 900px;
  padding: 12px 14px;
  border: var(--line);
  background: var(--surface);
  font-weight: 850;
}

.code-card {
  margin-top: 18px;
  background: var(--ink);
  color: var(--surface);
}

.code-card pre {
  overflow-x: auto;
  margin: 12px 0 0;
  padding: 14px;
  border: 2px solid var(--surface);
  background: #242424;
}

.code-card code {
  border: 0;
  background: transparent;
  color: inherit;
}

.progress-shell {
  height: 18px;
  border: 2px solid var(--ink);
  background: var(--paper);
}

#progress-bar,
#task-progress-bar {
  display: block;
  width: 0%;
  height: 100%;
  background: var(--green);
}

#progress-label,
#task-progress-label {
  margin-bottom: 0;
  font-weight: 850;
}

.todo-status {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
  padding: 14px;
  border: var(--line);
  background: var(--yellow);
  box-shadow: var(--shadow-sm);
}

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

.task-groups article,
.task-list {
  border: var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.task-groups article {
  padding: 14px;
}

.task-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding: 14px;
  background: var(--paper);
}

.task-list::before {
  content: "Tâches à cocher";
  width: fit-content;
  padding: 4px 8px;
  border: 2px solid var(--ink);
  background: var(--green);
  font-weight: 950;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.task-list label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 10px;
  border: 2px solid var(--ink);
  background: var(--surface);
  font-weight: 800;
}

.task-list input {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  accent-color: var(--ink);
}

.task-list label:has(input:checked) {
  background: var(--green);
  text-decoration: line-through;
}

.footer {
  padding: 24px clamp(14px, 3vw, 32px);
  border-top: var(--line);
  background: var(--ink);
  color: var(--surface);
  font-weight: 800;
}

.is-hidden {
  display: none !important;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media (max-width: 1180px) {
  .hero-grid,
  .presenter-slide,
  .shot-grid.three,
  .finance-example dl {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  html {
    scroll-padding-top: 78px;
  }

  .topbar {
    align-items: flex-start;
  }

  .topbar-actions {
    width: 100%;
    justify-content: flex-end;
  }

  .search-control span {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  .search-control input {
    width: min(52vw, 320px);
  }

  .menu-button {
    display: inline-block;
  }

  .manual-shell {
    display: block;
    padding-top: 14px;
  }

  .sidebar {
    position: fixed;
    inset: 76px 12px auto 12px;
    z-index: 40;
    display: none;
    max-height: calc(100svh - 92px);
    overflow: auto;
  }

  .sidebar.open {
    display: block;
  }

  .course-content {
    gap: 18px;
  }

  .learning-grid,
  .step-layout,
  .lesson-blocks,
  .concept-panel,
  .module-brief,
  .quick-grid,
  .planning-grid,
  .procedure-grid,
  .quiz-grid,
  .profile-grid,
  .shot-grid,
  .glossary-grid,
  .schema-grid,
  .capture-checklist,
  .task-groups {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .topbar {
    flex-wrap: wrap;
  }

  .brand {
    width: 100%;
  }

  .topbar-actions {
    justify-content: space-between;
  }

  .search-control {
    flex: 1;
  }

  .search-control input {
    width: 100%;
  }

  .lesson {
    padding: 16px;
  }

  .flow-diagram {
    grid-template-columns: 1fr;
  }
}