:root {
  --blue: #063b70;
  --burgundy: #7b1f31;
  --gold: #b89b5e;
  --gold-soft: #ecdba9;
  --green: #082f29;
  --green-2: #0d463d;
  --ink: #151512;
  --line: rgba(21, 21, 18, 0.16);
  --line-dark: rgba(255, 255, 255, 0.2);
  --muted: #5f5b50;
  --paper: #f7f3ea;
  --paper-2: #fffaf0;
  --white: #fff;
  --success: #246247;
  --shadow: 0 24px 70px rgba(15, 21, 18, 0.18);
  --sans: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --measure: 72ch;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 49.92%, rgba(21, 21, 18, .028) 50%, transparent 50.08%);
  background-size: min(8vw, 96px) 100%;
  opacity: .5;
  z-index: -1;
}

a {
  color: var(--blue);
  text-underline-offset: .2em;
  text-decoration-thickness: .08em;
}

a:hover {
  color: var(--burgundy);
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--white);
  background: var(--blue);
  transition: top .2s ease;
}

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

.course-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(280px, 1.8fr) auto;
  align-items: center;
  gap: 24px;
  min-height: 76px;
  padding: 12px clamp(18px, 4vw, 64px);
  background: rgba(255, 250, 240, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--blue);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 50px;
  color: var(--white);
  background: var(--blue);
  border-radius: 4px 4px 16px 16px;
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 700;
}

.brand-copy {
  display: grid;
  line-height: 1.08;
}

.brand-copy strong {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
}

.brand-copy span {
  margin-top: 4px;
  color: var(--muted);
  font-size: .68rem;
  letter-spacing: .05em;
}

.header-progress {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 650;
}

.progress-track {
  position: relative;
  height: 5px;
  overflow: hidden;
  background: rgba(6, 59, 112, .13);
}

.progress-fill {
  width: 100%;
  height: 100%;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .8s var(--ease);
}

.progress-fill.is-full {
  transform: scaleX(1);
}

.quiet-button,
.primary-button,
.secondary-button,
.choice-button,
.chip-button {
  border: 0;
  border-radius: 4px;
  font-weight: 700;
  transition:
    transform .22s var(--ease),
    background-color .22s ease,
    color .22s ease,
    box-shadow .22s ease;
}

.quiet-button {
  padding: 9px 12px;
  color: var(--blue);
  background: transparent;
  border: 1px solid rgba(6, 59, 112, .3);
}

.primary-button {
  padding: 14px 20px;
  color: var(--white);
  background: var(--green);
}

.secondary-button {
  padding: 13px 19px;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--ink);
}

.primary-button:hover,
.quiet-button:hover,
.secondary-button:hover,
.choice-button:hover,
.chip-button:hover {
  transform: translateY(-2px);
}

.primary-button:hover {
  color: var(--white);
  background: var(--green-2);
  box-shadow: 0 10px 24px rgba(8, 47, 41, .16);
}

.primary-button[disabled],
.secondary-button[disabled] {
  cursor: not-allowed;
  opacity: .48;
  transform: none;
  box-shadow: none;
}

.course-shell {
  display: grid;
  grid-template-columns: minmax(210px, 272px) minmax(0, 1fr);
  min-height: calc(100vh - 76px);
}

.course-nav {
  position: sticky;
  top: 76px;
  align-self: start;
  height: calc(100vh - 76px);
  overflow: auto;
  padding: 32px 24px 40px clamp(18px, 4vw, 64px);
  background: var(--paper-2);
  border-right: 1px solid var(--line);
}

.nav-kicker,
.eyebrow,
.stage-label,
.feedback-label,
.source-label {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: .73rem;
  font-weight: 800;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.course-nav ol {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: lesson;
}

.course-nav li {
  counter-increment: lesson;
}

.course-nav a {
  display: grid;
  grid-template-columns: 28px 1fr 18px;
  gap: 10px;
  align-items: start;
  padding: 12px 8px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.course-nav a::before {
  content: counter(lesson, decimal-leading-zero);
  color: var(--blue);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .05em;
}

.course-nav a::after {
  content: "○";
  color: var(--line);
  font-size: 1.1rem;
  line-height: 1;
}

.course-nav a[data-complete="true"]::after {
  content: "●";
  color: var(--gold);
}

.course-nav a[aria-current="page"] {
  color: var(--ink);
  font-weight: 750;
}

.course-main {
  min-width: 0;
}

.home-main,
.lesson {
  padding: clamp(44px, 8vw, 104px) clamp(22px, 7vw, 112px);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(380px, .98fr);
  gap: clamp(40px, 7vw, 104px);
  align-items: center;
  min-height: calc(100vh - 160px);
  margin-top: calc(0px - clamp(44px, 8vw, 104px));
  margin-right: calc(0px - clamp(22px, 7vw, 112px));
  margin-bottom: 0;
  margin-left: calc(0px - clamp(22px, 7vw, 112px));
  padding: clamp(72px, 9vw, 128px) clamp(22px, 7vw, 112px);
  color: var(--white);
  background: var(--green);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: -10vw;
  top: -20vw;
  width: 48vw;
  height: 48vw;
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 50%;
  box-shadow:
    0 0 0 9vw rgba(255, 255, 255, .025),
    0 0 0 18vw rgba(255, 255, 255, .018);
}

.hero-copy,
.workspace-theatre {
  position: relative;
  z-index: 1;
}

.hero h1,
.lesson-hero h1 {
  max-width: 900px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 500;
  letter-spacing: -.035em;
  line-height: .98;
}

.hero h1 span {
  color: var(--gold-soft);
}

.hero-deck {
  max-width: 58ch;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, .82);
  font-size: clamp(1.05rem, 1.5vw, 1.28rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero .primary-button {
  color: var(--green);
  background: var(--paper-2);
  text-decoration: none;
}

.hero .secondary-button {
  color: var(--white);
  border-color: rgba(255, 255, 255, .55);
  text-decoration: none;
}

.workspace-theatre {
  min-height: 520px;
  border: 1px solid var(--line-dark);
  background: rgba(0, 0, 0, .14);
  box-shadow: 28px 30px 42px rgba(0, 0, 0, .18);
}

.theatre-head {
  display: flex;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line-dark);
  color: rgba(255, 255, 255, .68);
  font-size: .73rem;
  font-weight: 750;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.theatre-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  min-height: 462px;
}

.theatre-files {
  display: grid;
  align-content: center;
  gap: 14px;
  padding: 24px;
  border-right: 1px solid var(--line-dark);
}

.file-slip {
  position: relative;
  padding: 13px 14px;
  color: var(--ink);
  background: var(--paper-2);
  box-shadow: 0 7px 14px rgba(0, 0, 0, .16);
  font-size: .8rem;
  animation: file-queue 6s var(--ease) infinite;
}

.file-slip:nth-child(2) {
  animation-delay: -2s;
}

.file-slip:nth-child(3) {
  animation-delay: -4s;
}

.file-slip strong,
.file-slip span {
  display: block;
}

.file-slip span {
  margin-top: 3px;
  color: var(--muted);
  font-size: .7rem;
}

.agent-loop {
  display: grid;
  grid-template-rows: repeat(4, 1fr);
  align-content: center;
  gap: 1px;
  padding: 30px;
  background: rgba(255, 255, 255, .035);
}

.loop-step {
  position: relative;
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: center;
  min-height: 74px;
  padding: 10px 0;
  color: rgba(255, 255, 255, .55);
  border-bottom: 1px solid var(--line-dark);
  animation: loop-highlight 6s linear infinite;
}

.loop-step:nth-child(2) {
  animation-delay: 1.5s;
}

.loop-step:nth-child(3) {
  animation-delay: 3s;
}

.loop-step:nth-child(4) {
  animation-delay: 4.5s;
}

.loop-step:last-child {
  border-bottom: 0;
}

.loop-index {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: .7rem;
  font-weight: 800;
}

.loop-step strong {
  display: block;
  color: inherit;
}

.loop-step span {
  display: block;
  margin-top: 2px;
  font-size: .72rem;
}

@keyframes file-queue {
  0%, 14%, 100% { transform: translateX(0); opacity: .74; }
  25%, 44% { transform: translateX(12px); opacity: 1; }
  55%, 88% { transform: translateX(0); opacity: .74; }
}

@keyframes loop-highlight {
  0%, 22%, 100% { color: rgba(255, 255, 255, .5); }
  4%, 18% { color: #ecdba9; }
}

.section-block {
  padding: clamp(64px, 9vw, 120px) 0;
}

.section-block + .section-block {
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, .6fr);
  gap: 40px;
  align-items: end;
  margin-bottom: 52px;
}

.section-heading h2,
.lesson h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.3rem, 4.7vw, 4.8rem);
  font-weight: 500;
  letter-spacing: -.03em;
  line-height: 1.02;
}

.section-heading p,
.lede {
  max-width: var(--measure);
  color: var(--muted);
  font-size: 1.08rem;
}

.module-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--ink);
}

.module-row {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr) minmax(210px, .45fr) 42px;
  gap: 24px;
  align-items: center;
  min-height: 128px;
  padding: 22px 8px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: background .25s ease, transform .25s var(--ease);
}

.module-row:hover {
  transform: translateX(8px);
  color: var(--ink);
  background: var(--paper-2);
}

.module-number {
  color: var(--gold);
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .1em;
}

.module-title {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.4vw, 2.4rem);
  line-height: 1.1;
}

.module-outcome {
  color: var(--muted);
  font-size: .9rem;
}

.module-state {
  color: var(--line);
  font-size: 1.5rem;
}

.module-row[data-complete="true"] .module-state {
  color: var(--gold);
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
}

.principle {
  padding: 30px 28px 20px 0;
  border-right: 1px solid var(--line);
}

.principle + .principle {
  padding-left: 28px;
}

.principle:last-child {
  border-right: 0;
}

.principle strong {
  display: block;
  margin-bottom: 14px;
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 600;
}

.principle p {
  margin: 0;
  color: var(--muted);
}

.lesson {
  max-width: 1180px;
}

.lesson-hero {
  padding-bottom: clamp(56px, 8vw, 96px);
  border-bottom: 1px solid var(--ink);
}

.lesson-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 28px;
  color: var(--muted);
  font-size: .86rem;
}

.lesson-meta span {
  position: relative;
}

.lesson-meta span + span::before {
  content: "•";
  position: absolute;
  left: -15px;
  color: var(--gold);
}

.lesson-section {
  max-width: 920px;
  padding: clamp(60px, 8vw, 104px) 0;
}

.lesson-section > p,
.lesson-section > ul,
.lesson-section > ol {
  max-width: var(--measure);
}

.lesson-section h3 {
  margin: 44px 0 14px;
  font-family: var(--serif);
  font-size: clamp(1.55rem, 2.7vw, 2.35rem);
  font-weight: 600;
  line-height: 1.15;
}

.key-idea {
  margin: 34px 0;
  padding: 28px 0 28px 32px;
  border-left: 1px solid var(--gold);
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.3vw, 2rem);
  line-height: 1.35;
}

.work-surface {
  position: relative;
  max-width: none;
  margin: 12px 0;
  padding: clamp(24px, 4vw, 44px);
  color: var(--white);
  background: var(--green);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.work-surface h3 {
  margin: 0 0 10px;
  color: var(--white);
}

.work-surface > p {
  max-width: 68ch;
  color: rgba(255, 255, 255, .75);
}

.exercise-progress {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  margin: 8px 0 22px;
  color: var(--gold-soft);
  font-size: .78rem;
  font-weight: 750;
}

.scenario-stack {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.scenario {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  padding: 20px;
  background: rgba(255, 255, 255, .07);
  border: 1px solid var(--line-dark);
}

.scenario strong {
  display: block;
  font-size: 1rem;
}

.scenario p {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, .68);
  font-size: .85rem;
}

.choice-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.choice-button,
.chip-button {
  min-height: 44px;
  padding: 10px 13px;
  color: var(--white);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .4);
  font-size: .8rem;
}

.choice-button[aria-pressed="true"],
.chip-button[aria-pressed="true"],
.choice-button.is-correct {
  color: var(--green);
  background: var(--gold-soft);
  border-color: var(--gold-soft);
}

.choice-button.is-wrong {
  color: var(--white);
  background: var(--burgundy);
  border-color: #a95766;
}

.feedback {
  display: none;
  margin-top: 22px;
  padding: 18px 20px;
  color: var(--ink);
  background: var(--paper-2);
  border-radius: 4px;
}

.feedback.is-visible {
  display: block;
  animation: feedback-in .5s var(--ease) both;
}

.feedback strong {
  display: block;
}

.feedback p {
  margin: 4px 0 0;
  color: var(--muted);
}

@keyframes feedback-in {
  from { opacity: 0; transform: translateY(10px); clip-path: inset(0 0 100% 0); }
  to { opacity: 1; transform: translateY(0); clip-path: inset(0); }
}

.compare-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 36px 0;
  border-top: 1px solid var(--ink);
}

.compare-col {
  padding: 24px;
  border-bottom: 1px solid var(--line);
}

.compare-col:nth-child(odd) {
  border-right: 1px solid var(--line);
}

.compare-col h3 {
  margin: 0 0 12px;
  font-size: 1.35rem;
}

.compare-col ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.brief-builder {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(300px, 1.1fr);
  gap: 24px;
  margin-top: 26px;
}

.brief-options {
  display: grid;
  gap: 16px;
}

.brief-group {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-dark);
}

.brief-group legend {
  margin-bottom: 9px;
  color: var(--gold-soft);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.brief-choice {
  display: block;
  margin: 8px 0;
  padding: 10px 12px;
  color: rgba(255, 255, 255, .82);
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--line-dark);
  cursor: pointer;
}

.brief-choice:has(input:checked) {
  color: var(--green);
  background: var(--gold-soft);
}

.brief-choice input {
  margin-right: 8px;
}

.brief-preview {
  align-self: start;
  min-height: 100%;
  padding: 24px;
  color: var(--ink);
  background: var(--paper-2);
  border-radius: 4px;
}

.brief-preview dt {
  margin-top: 18px;
  color: var(--blue);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.brief-preview dd {
  margin: 4px 0 0;
  min-height: 24px;
  color: var(--muted);
}

.file-lab {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, .8fr);
  gap: 24px;
  margin-top: 26px;
}

.file-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.file-card {
  position: relative;
  min-height: 118px;
  padding: 18px;
  color: var(--white);
  background: rgba(255, 255, 255, .055);
  border: 1px solid var(--line-dark);
  border-radius: 4px;
  text-align: left;
}

.file-card::after {
  content: "Add";
  position: absolute;
  right: 12px;
  bottom: 10px;
  color: var(--gold-soft);
  font-size: .72rem;
  font-weight: 800;
}

.file-card[aria-pressed="true"] {
  color: var(--green);
  background: var(--gold-soft);
  border-color: var(--gold-soft);
}

.file-card[aria-pressed="true"]::after {
  content: "Added";
  color: var(--green);
}

.file-card small {
  display: block;
  margin-top: 8px;
  color: inherit;
  opacity: .7;
}

.workspace-output {
  padding: 22px;
  color: var(--ink);
  background: var(--paper-2);
  border-radius: 4px;
}

.workspace-output ol {
  margin: 16px 0;
  padding-left: 20px;
}

.permission-board {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.permission-case {
  padding: 20px;
  border: 1px solid var(--line-dark);
}

.permission-case h4 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.permission-case p {
  margin: 0 0 14px;
  color: rgba(255, 255, 255, .68);
}

.permission-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.evidence-board {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr);
  gap: 24px;
  margin-top: 24px;
}

.draft-output {
  padding: 24px;
  color: var(--ink);
  background: var(--paper-2);
}

.claim {
  position: relative;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
}

.claim::before {
  content: attr(data-marker);
  position: absolute;
  left: -8px;
  top: 11px;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  color: var(--white);
  background: var(--blue);
  border-radius: 50%;
  font-size: .68rem;
  font-weight: 800;
}

.claim.is-revealed[data-status="unsupported"] {
  background: rgba(123, 31, 49, .12);
}

.claim.is-revealed[data-status="conflict"] {
  background: rgba(184, 155, 94, .18);
}

.claim.is-revealed[data-status="supported"] {
  background: rgba(36, 98, 71, .12);
}

.verification-list {
  display: grid;
  align-content: start;
  gap: 10px;
}

.verification-check {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  padding: 12px;
  color: rgba(255, 255, 255, .84);
  border-bottom: 1px solid var(--line-dark);
}

.verification-check input {
  width: 18px;
  height: 18px;
  accent-color: var(--gold);
}

.capstone-form {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.form-row {
  display: grid;
  gap: 8px;
}

.form-row label,
.form-row legend {
  color: var(--gold-soft);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.form-row input,
.form-row textarea,
.form-row select {
  width: 100%;
  padding: 13px 14px;
  color: var(--ink);
  background: var(--paper-2);
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 4px;
}

.form-row textarea {
  min-height: 96px;
  resize: vertical;
}

.capstone-output {
  display: none;
  margin-top: 24px;
  padding: 24px;
  color: var(--ink);
  background: var(--paper-2);
}

.capstone-output.is-visible {
  display: block;
  animation: feedback-in .5s var(--ease) both;
}

.capstone-output pre {
  max-height: 460px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--sans);
  font-size: .92rem;
}

.source-card {
  max-width: var(--measure);
  margin-top: 48px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.source-card p {
  margin: 4px 0;
  color: var(--muted);
}

.lesson-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  max-width: 920px;
  padding-top: 32px;
  border-top: 1px solid var(--ink);
}

.lesson-actions a {
  text-decoration: none;
}

.completion-note {
  color: var(--muted);
  font-size: .86rem;
}

.course-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  padding: 36px clamp(22px, 7vw, 112px);
  color: rgba(255, 255, 255, .7);
  background: var(--green);
  font-size: .82rem;
}

.course-footer a {
  color: var(--gold-soft);
}

.print-only {
  display: none;
}

.visually-hidden,
[data-live-region] {
  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;
}

.playbook {
  max-width: 1080px;
  margin: 0 auto;
  padding: 72px 28px 120px;
}

.playbook h1 {
  max-width: 900px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 500;
  letter-spacing: -.035em;
  line-height: .98;
}

.playbook-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 56px 0 80px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.playbook-step {
  padding: 26px 22px 30px 0;
  border-right: 1px solid var(--line);
}

.playbook-step + .playbook-step {
  padding-left: 22px;
}

.playbook-step:last-child {
  border-right: 0;
}

.playbook-step span {
  color: var(--gold);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .08em;
}

.playbook-step h2 {
  margin: 10px 0;
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 600;
  line-height: 1.15;
}

.playbook-step p {
  margin: 0;
  color: var(--muted);
  font-size: .9rem;
}

.reference-section {
  padding: 54px 0;
  border-top: 1px solid var(--line);
}

.reference-section h2 {
  margin: 0 0 24px;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 500;
  line-height: 1.05;
}

.brief-template {
  padding: 28px;
  color: var(--white);
  background: var(--green);
  white-space: pre-wrap;
}

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

.decision-table th,
.decision-table td {
  padding: 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.decision-table th {
  color: var(--blue);
  font-size: .76rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.glossary {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 0 24px;
}

.glossary dt,
.glossary dd {
  margin: 0;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.glossary dt {
  color: var(--blue);
  font-weight: 800;
}

.glossary dd {
  color: var(--muted);
}

@media (max-width: 1040px) {
  .course-header {
    grid-template-columns: 1fr auto;
  }

  .header-progress {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .course-shell {
    display: block;
  }

  .course-nav {
    position: sticky;
    top: 108px;
    z-index: 20;
    width: 100%;
    height: auto;
    padding: 10px 18px;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .course-nav .nav-kicker {
    display: none;
  }

  .course-nav ol {
    display: flex;
    min-width: max-content;
  }

  .course-nav a {
    grid-template-columns: 26px auto 16px;
    min-width: 180px;
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }

  .hero {
    grid-template-columns: 1fr;
    margin-top: -76px;
  }

  .workspace-theatre {
    min-height: 440px;
  }

  .theatre-grid {
    min-height: 380px;
  }
}

@media (max-width: 760px) {
  .course-header {
    min-height: 68px;
    gap: 8px 14px;
    padding-inline: 16px;
  }

  .brand-copy span {
    display: none;
  }

  .header-progress {
    font-size: .7rem;
  }

  .quiet-button {
    padding: 8px 10px;
  }

  .course-nav {
    top: 104px;
  }

  .home-main,
  .lesson {
    padding: 48px 20px;
  }

  .hero {
    margin-inline: -20px;
    padding-inline: 20px;
  }

  .hero h1,
  .lesson-hero h1 {
    font-size: clamp(2.75rem, 14vw, 4.5rem);
  }

  .workspace-theatre {
    min-height: 0;
    box-shadow: 14px 16px 28px rgba(0, 0, 0, .16);
  }

  .theatre-grid,
  .section-heading,
  .brief-builder,
  .file-lab,
  .evidence-board {
    grid-template-columns: 1fr;
  }

  .theatre-files {
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .section-heading {
    gap: 12px;
  }

  .module-row {
    grid-template-columns: 46px minmax(0, 1fr) 28px;
    gap: 12px;
  }

  .module-outcome {
    grid-column: 2 / -1;
  }

  .principles,
  .compare-table {
    grid-template-columns: 1fr;
  }

  .principle,
  .principle + .principle,
  .compare-col,
  .compare-col:nth-child(odd) {
    padding: 24px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .scenario {
    grid-template-columns: 1fr;
  }

  .choice-pair,
  .file-grid {
    grid-template-columns: 1fr;
  }

  .permission-options {
    grid-template-columns: 1fr;
  }

  .course-footer {
    grid-template-columns: 1fr;
  }

  .playbook-grid {
    grid-template-columns: 1fr;
  }

  .playbook-step,
  .playbook-step + .playbook-step {
    padding: 22px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .glossary {
    grid-template-columns: 1fr;
  }

  .glossary dt {
    padding-bottom: 0;
    border-bottom: 0;
  }
}

.course-regulatory-notice {
  margin-top: 70px;
  padding: 44px;
  border: 1px solid var(--line);
  background: #f4f1e9;
}

.course-regulatory-notice h2 {
  max-width: 760px;
  margin: 8px 0 18px;
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
}

.course-regulatory-notice > p:last-child {
  max-width: 980px;
  margin: 0;
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.7;
}

@media (max-width: 680px) {
  .course-regulatory-notice {
    margin-top: 48px;
    padding: 30px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

@media print {
  body {
    background: white;
  }

  body::before,
  .course-header,
  .course-nav,
  .work-surface,
  .lesson-actions,
  .course-footer {
    display: none !important;
  }

  .course-shell {
    display: block;
  }

  .lesson,
  .home-main {
    max-width: none;
    padding: 0;
  }

  .playbook {
    max-width: none;
    padding: 0;
  }

  .playbook h1 {
    font-size: 38pt;
  }

  .reference-section {
    break-inside: avoid;
  }

  .print-only {
    display: block;
  }

  a {
    color: black;
  }
}