.game-engine-week-two-root {
  color-scheme: light;
  --week-two-accent: #b84f35;
  --week-two-accent-strong: #8e3928;
  --week-two-accent-soft: #f2ddd4;
  --week-two-forest: #334b3c;
  --week-two-blue: #dce9eb;
  --week-two-cream: #f7f2e8;
  --week-two-charcoal: #171c1a;
  --week-two-success: #42694b;
  --week-two-warning: #8a642e;
}

body.game-engine-week-two {
  --accent: var(--week-two-accent);
  --accent-ink: var(--week-two-accent);
  --accent-strong: var(--week-two-accent-strong);
  --accent-soft: var(--week-two-accent-soft);
  --link: #8e3928;
  background: #eceee9;
}

body.game-engine-week-two code,
body.game-engine-week-two kbd,
body.game-engine-week-two .mono {
  font-family: var(--mono);
}

body.game-engine-week-two code {
  padding: 0.12em 0.34em;
  border: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  border-radius: 3px;
  background: var(--surface);
  color: var(--ink-strong);
  font-size: 0.88em;
  overflow-wrap: anywhere;
}

body.game-engine-week-two .week-two-hero .hero-inner {
  width: min(1280px, calc(100% - 56px));
  min-height: min(760px, calc(100svh - 58px));
  padding: 54px 0;
  grid-template-columns: minmax(340px, 0.94fr) minmax(440px, 1.06fr);
  gap: clamp(44px, 6vw, 86px);
  align-items: center;
}

.week-two-hero-copy {
  min-width: 0;
}

body.game-engine-week-two .week-two-hero h1 {
  max-width: 720px;
  font-size: clamp(42px, 5.2vw, 64px);
  line-height: 0.99;
}

body.game-engine-week-two .week-two-hero .lead {
  max-width: 610px;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.7;
}

.hero-summary {
  margin: 22px 0 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 620;
  letter-spacing: 0.025em;
  line-height: 1.55;
  word-break: keep-all;
}

.week-two-hero-visual {
  min-width: 0;
  margin: 0;
  padding: 9px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--week-two-charcoal);
  box-shadow: 0 26px 70px rgba(19, 27, 23, 0.18);
  transform: rotate(0.35deg);
}

.week-two-period2 .week-two-hero-visual {
  transform: rotate(-0.35deg);
}

.week-two-period3 .week-two-hero-visual {
  transform: none;
}

.week-two-hero-visual img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 3px;
}

.week-two-hero-visual figcaption {
  margin: 9px 4px 1px;
  color: #c8cec9;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  line-height: 1.5;
}

.editor-layout-visual {
  margin: 28px 0 32px;
  padding: 10px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: color-mix(in srgb, var(--surface) 78%, var(--paper));
  box-shadow: 0 20px 46px rgba(22, 31, 34, 0.12);
}

.editor-layout-visual img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.editor-layout-visual figcaption {
  margin: 11px 5px 3px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
  word-break: keep-all;
}

body.game-engine-week-two .layout,
body.game-engine-week-two main.layout {
  width: min(1180px, calc(100% - 48px));
  padding-top: 54px;
  grid-template-columns: minmax(0, 1fr) 238px;
  gap: 48px;
}

body.game-engine-week-two .article {
  padding: clamp(28px, 5vw, 60px);
  border-color: var(--line-strong);
  box-shadow: 0 18px 50px rgba(20, 29, 24, 0.07);
}

.lesson-intro {
  display: grid;
  gap: 34px;
}

.lesson-facts {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.lesson-facts > div {
  min-width: 0;
  padding: 18px 18px 19px 0;
}

.lesson-facts > div:nth-child(3n + 2),
.lesson-facts > div:nth-child(3n + 3) {
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.lesson-facts > div:nth-child(n + 4) {
  border-top: 1px solid var(--line);
}

.lesson-facts dt {
  margin: 0 0 7px;
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.lesson-facts dd {
  margin: 0;
  color: var(--ink-strong);
  font-size: 13px;
  font-weight: 680;
  line-height: 1.55;
  word-break: keep-all;
}

.arrival-statement {
  padding: 26px 28px;
  border-left: 5px solid var(--accent);
  background: var(--week-two-cream);
}

.arrival-statement > span,
.mission-kicker,
.section-kicker,
.cue-label,
.visual-label {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.arrival-statement strong {
  max-width: 760px;
  margin-top: 8px;
  display: block;
  color: var(--ink-strong);
  font-size: clamp(21px, 2.5vw, 30px);
  font-weight: 760;
  letter-spacing: -0.025em;
  line-height: 1.38;
  word-break: keep-all;
}

.arrival-statement p {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
  word-break: keep-all;
}

.session-track {
  margin: 0;
  padding: 0;
  display: grid;
  list-style: none;
  counter-reset: session;
}

.session-track li {
  padding: 15px 0;
  display: grid;
  grid-template-columns: 80px minmax(150px, 0.42fr) minmax(0, 1fr);
  gap: 18px;
  border-top: 1px solid var(--line);
  align-items: baseline;
}

.session-track li:last-child {
  border-bottom: 1px solid var(--line);
}

.session-track time,
.session-track .step-index {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
}

.session-track strong {
  color: var(--ink-strong);
  font-size: 13.5px;
  word-break: keep-all;
}

.session-track p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
  word-break: keep-all;
}

.lesson-section {
  margin-top: 72px;
  padding-top: 31px;
  border-top: 1px solid var(--line-strong);
  scroll-margin-top: 86px;
}

.lesson-section > header {
  max-width: 780px;
  margin-bottom: 30px;
}

.lesson-section > header h2 {
  margin: 7px 0 13px;
  color: var(--ink-strong);
  font-size: clamp(27px, 3.6vw, 42px);
  font-weight: 770;
  letter-spacing: -0.038em;
  line-height: 1.16;
  word-break: keep-all;
}

.lesson-section > header h2:first-child {
  margin-top: 0;
}

.lesson-section > header p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
  word-break: keep-all;
}

.lesson-section h3 {
  margin: 34px 0 12px;
  color: var(--ink-strong);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.38;
  word-break: keep-all;
}

.lesson-section p,
.lesson-section li,
.lesson-section dd,
.lesson-section td,
.lesson-section th {
  word-break: keep-all;
}

.lesson-section p {
  margin: 0 0 17px;
  color: var(--ink);
  font-size: 15.5px;
  line-height: 1.78;
}

.lesson-section ul,
.lesson-section ol {
  margin: 0 0 22px;
  padding-left: 22px;
}

.lesson-section li {
  margin: 8px 0;
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.72;
}

.teacher-cue,
.concept-note {
  margin: 27px 0;
  padding: 23px 25px;
  border: 1px solid var(--line-strong);
  border-left: 5px solid var(--week-two-forest);
  border-radius: 5px;
  background: color-mix(in srgb, var(--week-two-blue) 62%, var(--paper));
}

.teacher-cue > p:last-child,
.concept-note > p:last-child,
.callout > p:last-child,
.checkpoint > p:last-child {
  margin-bottom: 0;
}

.teacher-words,
.concept-summary {
  margin: 11px 0 0;
  color: var(--ink-strong);
  font-size: 17px;
  font-weight: 650;
  line-height: 1.68;
}

.teacher-words::before,
.concept-summary::before {
  content: "“";
  color: var(--accent-ink);
}

.teacher-words::after,
.concept-summary::after {
  content: "”";
  color: var(--accent-ink);
}

.board-note {
  margin: 25px 0;
  padding: 23px 25px;
  border-radius: 5px;
  background: var(--week-two-charcoal);
  color: #f1f2ed;
}

.board-note .cue-label {
  color: #efa083;
}

.board-note strong {
  margin-top: 10px;
  display: block;
  color: #fff;
  font-size: clamp(18px, 2.3vw, 24px);
  line-height: 1.5;
  word-break: keep-all;
}

.board-note p {
  margin: 10px 0 0;
  color: #c8cec9;
}

.concept-ladder {
  margin: 28px 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  overflow: hidden;
}

.concept-ladder > div {
  min-width: 0;
  padding: 22px 20px;
  background: var(--paper);
}

.concept-ladder > div + div {
  border-left: 1px solid var(--line);
}

.concept-ladder span,
.window-matrix span,
.comparison-list dt,
.parameter-table th,
.prefab-source > span,
.prefab-instance span {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.concept-ladder strong {
  margin: 7px 0 8px;
  display: block;
  color: var(--ink-strong);
  font-size: 16px;
  line-height: 1.42;
}

.concept-ladder p {
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.65;
}

.containment-line {
  margin: 28px 0;
  padding: 17px 20px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  color: var(--ink-strong);
  font-family: var(--mono);
  font-size: clamp(12px, 1.8vw, 15px);
  font-weight: 600;
  line-height: 1.8;
  text-align: center;
  overflow-wrap: anywhere;
}

.window-matrix {
  margin: 28px 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
}

.window-matrix article {
  padding: 22px 24px 23px 0;
  border-bottom: 1px solid var(--line);
}

.window-matrix article:nth-child(even) {
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

.window-matrix h3 {
  margin: 6px 0 7px;
  font-size: 18px;
}

.window-matrix p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.window-matrix small {
  margin-top: 11px;
  display: block;
  color: var(--ink);
  font-size: 11.5px;
  font-weight: 680;
}

.scene-navigation-guide {
  margin: 25px 0 29px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.scene-navigation-guide article {
  min-width: 0;
  padding: 23px 24px 22px 0;
}

.scene-navigation-guide article + article {
  padding-right: 0;
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

.scene-navigation-guide h4 {
  margin: 7px 0 8px;
  color: var(--ink-strong);
  font-size: 18px;
  line-height: 1.35;
}

.scene-navigation-guide p {
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.68;
}

.control-list {
  margin: 16px 0 0;
}

.control-list > div {
  padding: 10px 0;
  display: grid;
  grid-template-columns: minmax(130px, 0.46fr) minmax(0, 1fr);
  gap: 13px;
  border-top: 1px solid var(--line);
}

.control-list dt,
.control-list dd {
  min-width: 0;
  margin: 0;
  font-size: 11.5px;
  line-height: 1.55;
}

.control-list dt {
  color: var(--ink-strong);
  font-weight: 680;
}

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

body.game-engine-week-two kbd {
  padding: 0.16em 0.42em;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--surface);
  color: var(--ink-strong);
  font-size: 0.9em;
  font-weight: 700;
  white-space: nowrap;
}

.camera-frustum-model {
  margin: 27px 0 32px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(230px, 0.85fr);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--paper);
  overflow: hidden;
}

.camera-frustum-visual {
  min-width: 0;
  display: flex;
  align-items: center;
  background: var(--week-two-charcoal);
  overflow: hidden;
}

.camera-frustum-visual img {
  width: 100%;
  height: auto;
  display: block;
}

.camera-frustum-model figcaption {
  margin: 0;
  padding: 22px 23px;
  display: flex;
  align-items: center;
  border-left: 1px solid var(--line-strong);
  background: var(--surface);
}

.camera-frustum-model dl {
  width: 100%;
  margin: 0;
}

.camera-frustum-model dl > div {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.camera-frustum-model dl > div:last-child {
  border-bottom: 0;
}

.camera-frustum-model dt,
.camera-frustum-model dd {
  margin: 0;
}

.camera-frustum-model dt {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.camera-frustum-model dd {
  margin-top: 5px;
  color: var(--ink);
  font-size: 12.5px;
  line-height: 1.58;
}

.transform-tool-model {
  margin: 27px 0 22px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(250px, 0.8fr);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--paper);
  overflow: hidden;
}

.transform-tool-visual {
  min-width: 0;
  display: flex;
  align-items: center;
  background: var(--week-two-charcoal);
  overflow: hidden;
}

.transform-tool-visual img {
  width: 100%;
  height: auto;
  display: block;
}

.transform-tool-model figcaption {
  margin: 0;
  padding: 18px 21px;
  display: flex;
  align-items: center;
  border-left: 1px solid var(--line-strong);
  background: var(--surface);
}

.transform-tool-model dl {
  width: 100%;
  margin: 0;
}

.transform-tool-model dl > div {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.transform-tool-model dl > div:last-child {
  border-bottom: 0;
}

.transform-tool-model dt,
.transform-tool-model dd {
  margin: 0;
}

.transform-tool-model dt {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.transform-tool-model dd {
  margin-top: 5px;
  color: var(--ink);
  font-size: 11.5px;
  line-height: 1.55;
}

.axis-legend {
  margin: 0 0 30px;
  padding: 15px 0;
  display: grid;
  grid-template-columns: minmax(100px, 0.55fr) repeat(3, minmax(120px, 1fr));
  gap: 0;
  align-items: center;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.axis-legend > strong,
.axis-legend > span {
  min-width: 0;
  padding: 3px 18px;
  font-size: 11.5px;
  line-height: 1.5;
}

.axis-legend > strong {
  color: var(--ink-strong);
}

.axis-legend > span {
  border-left: 1px solid var(--line);
  font-family: var(--mono);
  font-weight: 650;
  text-align: center;
  white-space: nowrap;
}

.axis-legend .axis-x {
  color: #b7473d;
}

.axis-legend .axis-y {
  color: #39734d;
}

.axis-legend .axis-z {
  color: #356b9b;
}

.axis-legend p {
  grid-column: 1 / -1;
  margin: 14px 0 0;
  padding: 15px 0 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.65;
}

.selection-loop {
  margin: 28px 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 13px;
  align-items: center;
}

.selection-loop > div {
  min-height: 124px;
  padding: 19px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--week-two-cream);
}

.selection-loop strong {
  display: block;
  color: var(--ink-strong);
  font-size: 14px;
}

.selection-loop p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.55;
}

.selection-loop > span {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 18px;
}

.component-anatomy {
  margin: 28px 0 34px;
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(0, 1.18fr);
  gap: 34px;
  align-items: center;
}

.inspector-schematic {
  min-width: 0;
  padding: 15px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--week-two-charcoal);
  color: #f2f3ef;
  box-shadow: 0 18px 42px rgba(18, 22, 19, 0.16);
}

.inspector-object-bar {
  padding: 6px 7px 15px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 5px 12px;
  align-items: end;
}

.inspector-object-bar span,
.inspector-component span,
.component-reading dt {
  color: #efa083;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.inspector-object-bar strong {
  grid-column: 1;
  color: #fff;
  font-size: 20px;
}

.inspector-object-bar small {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  color: #aeb7b0;
  font-family: var(--mono);
  font-size: 11px;
}

.inspector-component {
  margin-top: 8px;
  padding: 13px 14px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.055);
}

.inspector-component strong {
  grid-column: 1;
  grid-row: 2;
  color: #f5f6f2;
  font-size: 13px;
  font-weight: 680;
}

.inspector-component p,
.inspector-component small {
  margin: 0;
  color: #bdc5bf;
  font-size: 11.5px;
  line-height: 1.5;
}

.inspector-component p {
  grid-column: 1;
  grid-row: 3;
}

.inspector-component small {
  grid-column: 2;
  grid-row: 1 / span 3;
  max-width: 92px;
  align-self: center;
  text-align: right;
}

.inspector-component.is-required {
  border-color: rgba(239, 160, 131, 0.56);
}

.add-component-schematic {
  margin-top: 12px;
  padding: 9px 12px;
  border: 1px dashed rgba(255, 255, 255, 0.28);
  border-radius: 4px;
  color: #cbd1cc;
  font-family: var(--mono);
  font-size: 11px;
  text-align: center;
}

.component-reading h3 {
  margin: 8px 0 10px;
  color: var(--ink-strong);
  font-size: 20px;
}

.component-reading > p {
  margin: 0 0 17px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.72;
}

.component-reading dl {
  margin: 0;
  border-top: 1px solid var(--line-strong);
}

.component-reading dl > div {
  padding: 12px 0;
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 16px;
  border-bottom: 1px solid var(--line);
}

.component-reading dt,
.component-reading dd {
  margin: 0;
}

.component-reading dt {
  color: var(--accent-ink);
}

.component-reading dd {
  color: var(--ink);
  font-size: 12.5px;
  line-height: 1.58;
}

.composition-equation {
  margin: 10px 0 38px;
  padding: 20px 0;
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) auto minmax(0, 0.9fr) auto minmax(0, 1fr) auto minmax(0, 1.15fr) auto minmax(0, 1.3fr);
  gap: 10px;
  align-items: stretch;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.composition-equation > div {
  min-width: 0;
  padding: 15px 13px;
  display: flex;
  flex-direction: column;
  border-left: 2px solid var(--line-strong);
}

.composition-equation > b {
  align-self: center;
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 680;
}

.composition-equation span {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.composition-equation strong {
  margin-top: 7px;
  display: block;
  color: var(--ink-strong);
  font-size: 13.5px;
  line-height: 1.45;
}

.composition-equation small {
  margin-top: 7px;
  display: block;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.5;
}

.composition-equation .composition-result {
  padding-right: 16px;
  border-left-color: var(--accent-ink);
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 9%, transparent), transparent);
}

.component-pair,
.two-column,
.decision-grid,
.evidence-grid {
  margin: 28px 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.component-pair article,
.decision-grid article,
.evidence-grid article {
  padding: 23px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--paper);
}

.component-pair h3,
.decision-grid h3,
.evidence-grid h3 {
  margin: 8px 0 9px;
}

.component-pair p,
.decision-grid p,
.evidence-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
}

.component-list {
  margin: 15px 0 0;
  padding: 0;
  list-style: none;
}

.component-list li {
  margin: 0;
  padding: 9px 0;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
}

.component-list li span:last-child {
  color: var(--muted);
  text-align: right;
}

.projection-visual {
  margin: 27px 0 22px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--paper);
  overflow: hidden;
}

.projection-visual > img {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: block;
  border-bottom: 1px solid var(--line-strong);
  object-fit: cover;
}

.projection-visual figcaption {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  background: var(--surface);
}

.projection-visual figcaption > div {
  min-width: 0;
  padding: 18px 21px 19px;
}

.projection-visual figcaption > div + div {
  border-left: 1px solid var(--line);
}

.projection-visual figcaption span {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.projection-visual figcaption p {
  margin: 7px 0 0;
  color: var(--ink);
  font-size: 12.5px;
  line-height: 1.65;
}

.projection-comparison article {
  display: flex;
  flex-direction: column;
}

.projection-comparison .component-list {
  width: 100%;
  margin-top: auto;
  padding-top: 15px;
}

.comparison-list {
  margin: 26px 0;
  border-top: 1px solid var(--line-strong);
}

.comparison-list > div {
  padding: 17px 0;
  display: grid;
  grid-template-columns: minmax(110px, 0.28fr) minmax(0, 1fr);
  gap: 22px;
  border-bottom: 1px solid var(--line);
}

.comparison-list dt,
.comparison-list dd {
  margin: 0;
}

.comparison-list dd {
  color: var(--ink);
  font-size: 13.5px;
  line-height: 1.7;
}

.callout {
  margin: 27px 0;
  padding: 21px 23px;
  border: 1px solid var(--line-strong);
  border-left: 5px solid var(--accent);
  border-radius: 5px;
  background: var(--paper);
}

.callout-title {
  margin: 0 0 7px;
  color: var(--ink-strong);
  font-size: 14px;
  font-weight: 750;
}

.callout p {
  color: var(--muted);
  font-size: 13.5px;
}

.callout-warning {
  border-left-color: var(--week-two-warning);
  background: color-mix(in srgb, #f5ead5 64%, var(--paper));
}

.callout-success {
  border-left-color: var(--week-two-success);
  background: color-mix(in srgb, #dfeadf 65%, var(--paper));
}

.demo-sequence {
  margin: 28px 0;
  padding: 0;
  display: grid;
  list-style: none;
  counter-reset: demo;
}

.demo-sequence > li {
  margin: 0;
  padding: 20px 0;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) minmax(180px, 0.42fr);
  gap: 19px;
  border-top: 1px solid var(--line);
  align-items: start;
  counter-increment: demo;
}

.demo-sequence > li:last-child {
  border-bottom: 1px solid var(--line);
}

.demo-sequence > li::before {
  content: counter(demo, decimal-leading-zero);
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
}

.demo-sequence h3 {
  margin: -4px 0 7px;
  font-size: 17px;
}

.demo-sequence p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.68;
}

.demo-observe {
  padding-left: 17px;
  border-left: 2px solid var(--accent);
}

.demo-observe strong {
  display: block;
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.demo-observe span {
  margin-top: 6px;
  display: block;
  color: var(--ink);
  font-size: 12px;
  line-height: 1.58;
}

.axis-table,
.parameter-table,
.pass-table {
  width: 100%;
  margin: 25px 0 30px;
  border-collapse: collapse;
  font-size: 13px;
}

.axis-table caption,
.parameter-table caption,
.pass-table caption {
  padding-bottom: 10px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  text-align: left;
}

.axis-table th,
.axis-table td,
.parameter-table th,
.parameter-table td,
.pass-table th,
.pass-table td {
  padding: 13px 14px;
  border: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.58;
  text-align: left;
}

.axis-table thead th,
.parameter-table thead th,
.pass-table thead th {
  background: var(--surface);
  color: var(--ink-strong);
  font-weight: 720;
}

.hierarchy-tree {
  margin: 25px 0;
  padding: 23px 25px;
  border-left: 5px solid var(--accent);
  border-radius: 5px;
  background: var(--week-two-charcoal);
  color: #f0f1ed;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.78;
  overflow-x: auto;
  white-space: pre;
}

.local-world {
  margin: 28px 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  overflow: hidden;
}

.local-world article {
  padding: 24px;
}

.local-world article + article {
  border-left: 1px solid var(--line);
  background: var(--week-two-cream);
}

.local-world h3 {
  margin: 0 0 9px;
}

.local-world p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.sorting-stage {
  margin: 30px 0;
  padding: 28px;
  display: grid;
  gap: 10px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--week-two-charcoal);
  perspective: 700px;
}

.sorting-plane {
  padding: 15px 19px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  color: #f8f8f5;
  transform: rotateX(4deg);
}

.sorting-plane:nth-child(1) {
  background: #2c493a;
}

.sorting-plane:nth-child(2) {
  background: #315966;
}

.sorting-plane:nth-child(3) {
  background: #85452f;
}

.sorting-plane span {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
}

.sorting-plane strong {
  font-size: 12px;
  font-weight: 600;
}

.prefab-system {
  margin: 29px 0;
  display: grid;
  grid-template-columns: minmax(190px, 0.72fr) auto minmax(0, 1.5fr);
  gap: 20px;
  align-items: center;
}

.prefab-source,
.prefab-instance {
  padding: 22px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--paper);
}

.prefab-source {
  border-top: 5px solid var(--accent);
}

.prefab-source strong,
.prefab-instance strong {
  margin: 7px 0;
  display: block;
  color: var(--ink-strong);
  font-size: 15px;
}

.prefab-source p,
.prefab-instance p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.prefab-arrow {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 21px;
}

.prefab-instances {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.misconception-list {
  margin: 27px 0;
  border-top: 1px solid var(--line-strong);
}

.misconception-list article {
  padding: 18px 0;
  display: grid;
  grid-template-columns: minmax(150px, 0.38fr) minmax(0, 1fr);
  gap: 22px;
  border-bottom: 1px solid var(--line);
}

.misconception-list h3 {
  margin: 0;
  color: var(--error-ink);
  font-size: 14px;
}

.misconception-list p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
}

.retrieval-set {
  margin: 26px 0;
  display: grid;
  gap: 11px;
}

.retrieval-set details,
.hint-stack details {
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--paper);
}

.retrieval-set summary,
.hint-stack summary {
  padding: 16px 18px;
  color: var(--ink-strong);
  font-size: 13.5px;
  font-weight: 720;
}

.retrieval-set .details-motion-content,
.hint-stack .details-motion-content {
  padding: 0 18px 17px;
}

.retrieval-set p,
.hint-stack p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.period-bridge {
  margin-top: 64px;
  padding: 27px 0 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 26px;
  border-top: 1px solid var(--line-strong);
  align-items: center;
}

.period-bridge span {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.period-bridge strong {
  margin-top: 5px;
  display: block;
  color: var(--ink-strong);
  font-size: 20px;
  line-height: 1.4;
}

.period-bridge a,
.mission-action {
  min-height: 44px;
  padding: 11px 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent);
  border-radius: 4px;
  color: var(--accent-ink);
  font-size: 12px;
  font-weight: 730;
  text-decoration: none;
  transition:
    background-color 160ms var(--ease-out),
    border-color 160ms var(--ease-out),
    color 160ms var(--ease-out),
    transform 160ms var(--ease-out);
}

.period-bridge a:active,
.mission-action:active {
  transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
  .period-bridge a:hover,
  .mission-action:hover {
    background: var(--accent);
    color: #fff;
    text-decoration: none;
  }

  .week-two-toc a:hover {
    color: var(--accent-ink);
    text-decoration: none;
  }
}

.mobile-section-nav {
  display: none;
}

.week-two-toc {
  position: sticky;
  top: 86px;
  padding: 4px 0 0 20px;
  border-left: 1px solid var(--line-strong);
}

.week-two-toc > span {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.week-two-toc ol {
  margin: 15px 0 0;
  padding: 0;
  display: grid;
  gap: 3px;
  list-style: none;
}

.week-two-toc a {
  padding: 7px 0;
  display: block;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 620;
  line-height: 1.45;
}

.week-two-toc a[aria-current="true"] {
  color: var(--accent-ink);
  text-decoration: none;
}

.week-two-toc a[aria-current="true"] {
  margin-left: -21px;
  padding-left: 19px;
  border-left-color: var(--accent-ink);
}

.toc-periods {
  margin-top: 22px;
  padding-top: 16px;
  display: grid;
  gap: 7px;
  border-top: 1px solid var(--line);
}

.toc-periods a {
  padding: 0;
  color: var(--ink);
}

.mission-brief {
  margin: 2px 0 34px;
  padding: clamp(25px, 4vw, 36px);
  border-radius: 6px;
  background: var(--week-two-charcoal);
  color: #f1f2ee;
}

.mission-brief .mission-kicker {
  color: #ef9c7c;
}

.mission-brief h2 {
  max-width: 700px;
  margin: 9px 0 14px;
  color: #fff;
  font-size: clamp(28px, 4vw, 45px);
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.mission-brief > p {
  max-width: 720px;
  margin: 0;
  color: #cbd0cc;
  font-size: 14.5px;
  line-height: 1.75;
}

.mission-brief dl {
  margin: 26px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.mission-brief dl > div {
  padding: 17px 16px 0 0;
}

.mission-brief dt {
  color: #ef9c7c;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
  text-transform: uppercase;
}

.mission-brief dd {
  margin: 7px 0 0;
  color: #fff;
  font-size: 13px;
  font-weight: 640;
  line-height: 1.55;
}

.goal-reading {
  margin: 29px 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
  list-style: none;
  counter-reset: goal-reading;
}

.goal-reading li {
  min-height: 76px;
  margin: 0;
  padding: 17px 0;
  display: grid;
  grid-template-columns: 42px minmax(150px, 0.34fr) minmax(0, 1fr);
  gap: 18px;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
  counter-increment: goal-reading;
}

.goal-reading li::before {
  content: counter(goal-reading, decimal-leading-zero);
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
}

.goal-reading strong {
  color: var(--ink-strong);
  font-size: 14.5px;
}

.goal-reading span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.mission-contract {
  margin: 28px 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  overflow: hidden;
}

.mission-contract section {
  padding: 22px 24px 20px;
}

.mission-contract section:first-child {
  box-shadow: inset 4px 0 0 var(--accent);
}

.mission-contract section + section {
  border-left: 1px solid var(--line);
  background: var(--week-two-cream);
}

.mission-contract h3 {
  margin: 0 0 5px;
  font-size: 16px;
  font-weight: 750;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.mission-contract .contract-note {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.5;
}

.mission-contract .contract-spec {
  margin: 0;
}

.mission-contract .contract-spec > div {
  padding: 9px 0;
  display: grid;
  grid-template-columns: 7.8em minmax(0, 1fr);
  gap: 12px 14px;
  border-top: 1px solid var(--line);
  align-items: baseline;
}

.mission-contract .contract-spec dt {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.mission-contract .contract-spec dd {
  margin: 0;
  min-width: 0;
  color: var(--ink);
  font-size: 13.5px;
  line-height: 1.55;
}

.mission-contract .contract-spec dd span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.mission-contract .contract-choices {
  margin: 0;
  padding: 0;
  list-style: none;
}

.mission-contract .contract-choices li {
  margin: 0;
  padding: 9px 0;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-size: 13.5px;
  line-height: 1.55;
}

.mission-route {
  margin: 28px 0;
  padding: 0;
  display: grid;
  list-style: none;
}

.mission-route li {
  margin: 0;
  padding: 22px 0;
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr) minmax(170px, 0.42fr);
  gap: 20px;
  border-top: 1px solid var(--line);
  align-items: start;
}

.mission-route li:last-child {
  border-bottom: 1px solid var(--line);
}

.mission-route time {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
}

.mission-route h3 {
  margin: -5px 0 7px;
  font-size: 17px;
}

.mission-route p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.checkpoint {
  padding-left: 17px;
  border-left: 3px solid var(--week-two-success);
}

.checkpoint strong {
  color: var(--week-two-success);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.checkpoint p {
  margin-top: 6px;
  color: var(--ink);
  font-size: 12px;
}

.week-two-period3 mark {
  padding: 0 0.18em;
  background: #ffe34a;
  color: inherit;
}

.week-two-period3 .menu-table th[scope="row"] {
  color: var(--ink-strong);
  font-family: inherit;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0;
  text-transform: none;
  white-space: nowrap;
}

.week-two-period3 .menu-table .menu-path {
  display: inline-block;
  max-width: 100%;
  margin-bottom: 5px;
  overflow-wrap: anywhere;
}

.week-two-period3 .menu-table .menu-note {
  display: block;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.5;
}

.week-two-period3 .write-spec {
  margin: 8px 0 26px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.week-two-period3 .write-spec li {
  margin: 0;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 18px;
  align-items: baseline;
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.65;
}

.week-two-period3 .write-spec li > span:first-child {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.week-two-period3 .checkpoint:has(.checkpoint-number) {
  margin: 8px 0 0;
  padding: 14px 17px;
  border: 1px dashed var(--line-strong);
  border-radius: 5px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  background: var(--surface);
}

.week-two-period3 .checkpoint-number {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.week-two-period3 .checkpoint:has(.checkpoint-number) p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.pass-board {
  margin: 27px 0;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  overflow: hidden;
}

.pass-board-header {
  padding: 22px 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  background: var(--week-two-charcoal);
  color: #fff;
  align-items: center;
}

.pass-board-header h3 {
  margin: 0 0 5px;
  color: #fff;
  font-size: 20px;
}

.pass-board-header p {
  margin: 0;
  color: #cbd0cc;
  font-size: 12px;
}

.pass-progress {
  min-width: 92px;
  text-align: right;
}

.pass-progress strong {
  display: block;
  color: #ef9c7c;
  font-family: var(--mono);
  font-size: 22px;
}

.pass-progress span {
  color: #cbd0cc;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
}

.pass-progress progress {
  width: 92px;
  height: 5px;
  margin-top: 8px;
  display: block;
  border: 0;
  background: rgba(255, 255, 255, 0.18);
  accent-color: #ef9c7c;
}

.pass-progress progress::-webkit-progress-bar {
  background: rgba(255, 255, 255, 0.18);
}

.pass-progress progress::-webkit-progress-value {
  background: #ef9c7c;
}

.pass-progress progress::-moz-progress-bar {
  background: #ef9c7c;
}

.pass-checks {
  padding: 5px 24px;
  display: grid;
}

.pass-check {
  min-height: 62px;
  padding: 14px 0;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) auto;
  gap: 13px;
  border-bottom: 1px solid var(--line);
  align-items: start;
  cursor: pointer;
}

.pass-check:last-child {
  border-bottom: 0;
}

.pass-check input {
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  accent-color: var(--accent-ink);
}

.pass-check strong {
  display: block;
  color: var(--ink-strong);
  font-size: 13px;
  line-height: 1.5;
}

.pass-check span {
  margin-top: 3px;
  display: block;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.52;
}

.pass-check code {
  margin-top: 1px;
  font-size: 11px;
  white-space: nowrap;
}

.pass-board-footer {
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--line-strong);
  background: var(--surface);
  align-items: center;
}

.pass-board-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 11.5px;
}

.reset-checks {
  min-height: 44px;
  padding: 9px 13px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font: 650 12px/1.2 var(--sans);
  cursor: pointer;
  transition:
    border-color 160ms var(--ease-out),
    color 160ms var(--ease-out),
    transform 160ms var(--ease-out);
}

.reset-checks:active {
  transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
  .reset-checks:hover {
    border-color: var(--accent-ink);
    color: var(--accent-ink);
  }
}

.mission-note {
  margin: 23px 0;
}

.mission-note label {
  margin-bottom: 9px;
  display: block;
  color: var(--ink-strong);
  font-size: 13px;
  font-weight: 720;
}

.mission-note textarea {
  width: 100%;
  min-height: 110px;
  padding: 15px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--paper);
  color: var(--ink);
  font: 14px/1.65 var(--sans);
  resize: vertical;
}

.mission-note textarea:focus {
  border-color: var(--accent-ink);
  outline: 3px solid color-mix(in srgb, var(--accent) 22%, transparent);
}

.save-state {
  margin-top: 7px;
  display: block;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.55;
}

.save-state[data-state="error"],
[data-check-save-state][data-state="error"] {
  color: var(--error-ink);
}

.hint-stack {
  margin: 25px 0;
  display: grid;
  gap: 10px;
}

.support-ladder {
  margin: 25px 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  overflow: hidden;
  list-style: none;
  counter-reset: support;
}

.support-ladder li {
  min-width: 0;
  margin: 0;
  padding: 20px;
  counter-increment: support;
}

.support-ladder li + li {
  border-left: 1px solid var(--line);
}

.support-ladder li::before {
  content: counter(support, decimal-leading-zero);
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
}

.support-ladder strong {
  margin: 7px 0;
  display: block;
  color: var(--ink-strong);
  font-size: 14px;
}

.support-ladder span {
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.55;
}

.source-list {
  margin: 0;
  padding: 0;
  display: grid;
  list-style: none;
  border-top: 1px solid var(--line-strong);
}

.source-list li {
  margin: 0;
  padding: 14px 0;
  display: grid;
  grid-template-columns: minmax(180px, 0.38fr) minmax(0, 1fr);
  gap: 20px;
  border-bottom: 1px solid var(--line);
}

.source-list a {
  color: var(--accent-ink);
  font-size: 12.5px;
  font-weight: 720;
}

.source-list span {
  color: var(--muted);
  font-size: 12.5px;
}

@media (prefers-color-scheme: dark) {
  .game-engine-week-two-root {
    color-scheme: dark;
  }

  body.game-engine-week-two {
    --bg: #151a17;
    --paper: #1c221e;
    --surface: #252d28;
    --surface-strong: #303a33;
    --ink: #dce1dc;
    --ink-strong: #f5f6f2;
    --muted: #a8b0aa;
    --quiet: #929c95;
    --line: rgba(236, 240, 235, 0.13);
    --line-strong: rgba(236, 240, 235, 0.23);
    --accent: #ef8f6e;
    --accent-ink: #ef8f6e;
    --accent-strong: #f3a184;
    --accent-soft: #4b2c25;
    --link: #ef9c7c;
    --error-ink: #f0a299;
    --week-two-cream: #27261f;
    --week-two-blue: #233138;
    --week-two-charcoal: #0d110f;
    --week-two-success: #85bd8d;
    --week-two-warning: #d7aa68;
    background: var(--bg);
  }

  .arrival-statement,
  .teacher-cue,
  .concept-note,
  .callout-warning,
  .callout-success,
  .local-world article + article {
    background: color-mix(in srgb, var(--surface) 76%, var(--paper));
  }

  .mission-contract section + section {
    background: var(--surface);
  }

  .week-two-hero-visual {
    box-shadow: 0 26px 70px rgba(0, 0, 0, 0.32);
  }
}

@media (prefers-reduced-transparency: reduce) {
  body.game-engine-week-two .lesson-header {
    background: var(--paper);
    backdrop-filter: none;
  }
}

.week-two-period1 .project-contract {
  margin: 8px 0 28px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.week-two-period1 .project-contract > div {
  min-width: 0;
  padding: 20px 22px 22px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.week-two-period1 .project-contract span {
  display: block;
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.week-two-period1 .project-contract strong {
  margin: 10px 0 8px;
  display: block;
  color: var(--ink-strong);
  font-size: 18px;
  letter-spacing: -0.02em;
  line-height: 1.3;
  word-break: keep-all;
}

.week-two-period1 .project-contract p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
  word-break: keep-all;
}

.week-two-period1 .template-comparison {
  table-layout: fixed;
}

.week-two-period1 .template-comparison th:first-child {
  width: 23%;
}

.week-two-period1 .template-comparison th:nth-child(2) {
  width: 24%;
}

.week-two-period1 .template-comparison th:last-child {
  width: 18%;
}

.week-two-period1 .template-comparison td {
  color: var(--muted);
  word-break: keep-all;
}

.week-two-period1 .template-comparison td strong {
  color: var(--ink-strong);
}

.week-two-period1 .template-comparison td span {
  margin: 7px 0 0;
  width: fit-content;
  display: block;
  padding: 3px 7px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.week-two-period1 .template-comparison .template-selected td {
  background: color-mix(in srgb, var(--accent-soft) 72%, var(--paper));
  color: var(--ink);
}

.week-two-period1 .template-decision {
  margin: -10px 0 30px;
  padding: 17px 20px;
  border-left: 5px solid var(--accent);
  background: var(--surface);
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.7;
  word-break: keep-all;
}

.week-two-period1 .template-decision strong {
  display: block;
  color: var(--ink-strong);
}

.week-two-period1 .template-decision p {
  margin: 7px 0 0;
  color: inherit;
}

.game-engine-week-two .project-create-steps {
  margin: 0 0 28px;
  padding: 0;
  border-top: 1px solid var(--line-strong);
  list-style: none;
}

.game-engine-week-two .project-create-steps li {
  padding: 18px 0;
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  border-bottom: 1px solid var(--line);
}

.game-engine-week-two .project-create-steps li > span {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.03em;
}

.game-engine-week-two .project-create-steps li > div {
  min-width: 0;
}

.game-engine-week-two .project-create-steps strong {
  color: var(--ink-strong);
  font-size: 15px;
  word-break: keep-all;
}

.game-engine-week-two .project-create-steps p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
  word-break: keep-all;
}

.week-two-period1 .lesson-section > h3 {
  margin: 28px 0 14px;
  color: var(--ink-strong);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  word-break: keep-all;
}

.week-two-period1 .cli-supplement {
  margin: 30px 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--surface) 54%, var(--paper));
}

.week-two-period1 .cli-supplement > summary {
  min-height: 66px;
  padding: 15px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 16px;
  color: var(--ink-strong);
  list-style: none;
  cursor: pointer;
}

.week-two-period1 .cli-supplement > summary::-webkit-details-marker {
  display: none;
}

.week-two-period1 .cli-supplement > summary::after {
  content: "+";
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 18px;
  transition: transform 160ms var(--ease-out);
}

.week-two-period1 .cli-supplement[open] > summary::after {
  transform: rotate(45deg);
}

.week-two-period1 .cli-supplement > summary span {
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.week-two-period1 .cli-supplement > summary strong {
  font-size: 16px;
}

.week-two-period1 .cli-supplement > summary small {
  margin-left: auto;
  color: var(--muted);
  font-size: 11.5px;
}

.week-two-period1 .cli-supplement > .details-motion-content {
  padding: 5px 20px 22px;
}

.week-two-period1 .cli-supplement .project-create-steps {
  margin-bottom: 22px;
}

.week-two-period1 .cli-create-grid {
  margin: 12px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.week-two-period1 .cli-command {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper);
}

.week-two-period1 .cli-command-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 10px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
}

.week-two-period1 .cli-command-bar span {
  min-width: 0;
  color: var(--quiet);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
}

.week-two-period1 .cli-copy {
  flex: 0 0 auto;
  min-height: 32px;
  padding: 5px 9px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--surface);
  color: var(--ink);
  font: 650 12px/1.2 var(--sans);
  white-space: nowrap;
  cursor: pointer;
}

.week-two-period1 .cli-copy:active:not(:focus-visible) {
  transform: scale(0.97);
}

.week-two-period1 .cli-copy[data-copied="true"] {
  border-color: var(--week-two-success);
  color: var(--week-two-success);
}

.week-two-period1 .cli-command pre {
  margin: 0;
  padding: 12px 14px;
}

.week-two-period1 .cli-command pre code {
  display: block;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  color: var(--ink-strong);
  font-size: 12.5px;
  line-height: 1.55;
  user-select: all;
}

.week-two-period1 .cli-command-note {
  margin: 0;
  padding: 10px 14px 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

@media (max-width: 980px) {
  body.game-engine-week-two .week-two-hero .hero-inner {
    min-height: 0;
    padding: 48px 0;
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .week-two-hero-visual {
    max-width: 820px;
  }

  body.game-engine-week-two .layout,
  body.game-engine-week-two main.layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .week-two-toc {
    display: none;
  }

  .mobile-section-nav {
    grid-column: 1 / -1;
    display: block;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    background: var(--paper);
    overflow: hidden;
  }

  .mobile-section-nav summary {
    min-height: 48px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    color: var(--ink-strong);
    font-size: 14px;
    font-weight: 720;
    list-style: none;
    cursor: pointer;
  }

  .mobile-section-nav summary::-webkit-details-marker {
    display: none;
  }

  .mobile-section-nav summary::after {
    content: "▾";
    color: var(--accent-ink);
    font-size: 15px;
    transition: transform 160ms var(--ease-out);
  }

  .mobile-section-nav[open] summary::after {
    transform: rotate(180deg);
  }

  .mobile-section-nav nav {
    padding: 3px 16px 16px;
    border-top: 1px solid var(--line);
  }

  .mobile-section-nav ol {
    margin: 0;
    padding: 10px 0 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2px 18px;
    list-style: none;
  }

  .mobile-section-nav li {
    margin: 0;
  }

  .mobile-section-nav a {
    min-height: 44px;
    padding: 10px 0;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 13px;
    font-weight: 650;
    line-height: 1.45;
  }

  .mobile-section-nav a[aria-current="true"] {
    color: var(--accent-ink);
  }

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

  .concept-ladder > div:nth-child(3),
  .support-ladder li:nth-child(3) {
    border-left: 0;
  }

  .concept-ladder > div:nth-child(n + 3),
  .support-ladder li:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .demo-sequence > li,
  .mission-route li {
    grid-template-columns: 54px minmax(0, 1fr);
  }

  .demo-observe,
  .mission-route .checkpoint {
    grid-column: 2;
  }
}

@media (max-width: 760px) {
  body.game-engine-week-two .week-two-hero .hero-inner,
  body.game-engine-week-two .layout,
  body.game-engine-week-two main.layout {
    width: min(100% - 28px, 680px);
  }

  body.game-engine-week-two .week-two-hero .hero-inner {
    padding: 38px 0 33px;
    gap: 30px;
  }

  body.game-engine-week-two .week-two-hero h1 {
    font-size: clamp(39px, 13vw, 58px);
  }

  body.game-engine-week-two .article {
    padding: 25px 20px;
  }

  .mobile-section-nav ol {
    grid-template-columns: 1fr;
  }

  .lesson-facts,
  .window-matrix,
  .scene-navigation-guide,
  .component-pair,
  .component-anatomy,
  .two-column,
  .decision-grid,
  .evidence-grid,
  .mission-contract,
  .local-world,
  .week-two-period1 .project-contract {
    grid-template-columns: 1fr;
  }

  .component-anatomy {
    gap: 22px;
  }

  .camera-frustum-model {
    grid-template-columns: 1fr;
  }

  .camera-frustum-model figcaption {
    border-top: 1px solid var(--line-strong);
    border-left: 0;
  }

  .scene-navigation-guide article,
  .scene-navigation-guide article + article {
    padding: 20px 0;
    border-left: 0;
  }

  .scene-navigation-guide article + article {
    border-top: 1px solid var(--line);
  }

  .transform-tool-model {
    grid-template-columns: 1fr;
  }

  .transform-tool-model figcaption {
    border-top: 1px solid var(--line-strong);
    border-left: 0;
  }

  .projection-visual figcaption {
    grid-template-columns: 1fr;
  }

  .projection-visual figcaption > div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

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

  .axis-legend > strong,
  .axis-legend p {
    grid-column: 1 / -1;
  }

  .axis-legend > strong {
    padding: 3px 6px 12px;
  }

  .axis-legend > span {
    padding: 8px 5px;
  }

  .composition-equation {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 10px 0;
  }

  .composition-equation > div {
    padding: 13px 16px;
  }

  .composition-equation > b {
    padding: 1px 16px;
    justify-self: start;
    font-size: 15px;
  }

  .component-reading dl > div {
    grid-template-columns: 82px minmax(0, 1fr);
  }

  .week-two-period3 .write-spec li,
  .mission-contract .contract-spec > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .week-two-period3 .menu-table th[scope="row"] {
    white-space: normal;
  }

  .week-two-period1 .cli-supplement > summary small {
    width: 100%;
    margin-left: 0;
  }

  .lesson-facts > div,
  .lesson-facts > div:nth-child(3n + 2),
  .lesson-facts > div:nth-child(3n + 3) {
    padding: 14px 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .lesson-facts > div:first-child {
    border-top: 0;
  }

  .session-track li {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 10px 14px;
  }

  .session-track p {
    grid-column: 2;
  }

  .window-matrix article,
  .window-matrix article:nth-child(even) {
    padding: 18px 0;
    border-left: 0;
  }

  .selection-loop {
    grid-template-columns: 1fr;
  }

  .selection-loop > span {
    transform: rotate(90deg);
    text-align: center;
  }

  .week-two-period2 #workspace .project-create-steps li,
  .comparison-list > div,
  .misconception-list article,
  .source-list li {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .local-world article + article,
  .mission-contract section + section {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .prefab-system {
    grid-template-columns: 1fr;
  }

  .prefab-arrow {
    transform: rotate(90deg);
    text-align: center;
  }

  .prefab-instances {
    grid-template-columns: 1fr;
  }

  .sorting-plane,
  .pass-board-footer,
  .period-bridge {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: flex-start;
  }

  .sorting-plane {
    display: grid;
  }

  .mission-brief dl {
    grid-template-columns: 1fr;
  }

  .mission-brief dl > div + div {
    border-top: 1px solid rgba(255, 255, 255, 0.14);
  }

  .pass-check {
    grid-template-columns: 22px minmax(0, 1fr);
  }

  .pass-check code {
    grid-column: 2;
    justify-self: start;
  }

  .support-ladder,
  .concept-ladder {
    grid-template-columns: 1fr;
  }

  .goal-reading li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 6px 12px;
  }

  .goal-reading span {
    grid-column: 2;
  }

  .concept-ladder > div + div,
  .concept-ladder > div:nth-child(3),
  .support-ladder li + li,
  .support-ladder li:nth-child(3) {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .axis-table,
  .parameter-table,
  .pass-table {
    min-width: 640px;
  }

  .table-scroll {
    overflow-x: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .week-two-hero-visual,
  .week-two-period2 .week-two-hero-visual {
    transform: none;
  }

  .period-bridge a,
  .mission-action,
  .reset-checks,
  .mobile-section-nav summary::after {
    transition: none;
  }

  .period-bridge a:active,
  .mission-action:active,
  .reset-checks:active {
    transform: none;
  }
}

@media print {
  body.game-engine-week-two {
    background: #fff;
  }

  body.game-engine-week-two .lesson-header,
  .week-two-toc,
  .mobile-section-nav,
  .period-bridge a,
  .reset-checks {
    display: none !important;
  }

  body.game-engine-week-two .week-two-hero .hero-inner,
  body.game-engine-week-two .layout,
  body.game-engine-week-two main.layout {
    width: 100%;
  }

  body.game-engine-week-two .week-two-hero .hero-inner {
    min-height: 0;
    padding: 28px 0;
    grid-template-columns: 0.9fr 1.1fr;
  }

  body.game-engine-week-two .article {
    padding: 0;
    border: 0;
    box-shadow: none;
  }

  .lesson-section,
  .mission-brief,
  .pass-board {
    break-inside: avoid;
  }
}