:root {
  color-scheme: light dark;
  --page: #eef2f8;
  --page-wash: #e5ebf5;
  --surface: #f9fbfe;
  --surface-raised: #f4f7fc;
  --surface-strong: #e8eef8;
  --ink: #172033;
  --muted: #59657a;
  --subtle: #79859a;
  --line: #cbd4e2;
  --line-strong: #9eacc1;
  --accent: #2457d6;
  --accent-strong: #173f9f;
  --accent-soft: #dce7ff;
  --reasoning: #d7e4ff;
  --private: #e4e8ef;
  --latent: #bd762d;
  --latent-strong: #86501c;
  --latent-soft: #f8e4ca;
  --error: #a33e3e;
  --error-soft: #fae7e5;
  --paper: #fbfcfe;
  --paper-ink: #172033;
  --diagram-canvas: #fbfbfc;
  --diagram-panel: #f0f1f4;
  --diagram-line: #d5d8de;
  --diagram-guide: #c8cbd0;
  --diagram-text: #545a64;
  --diagram-muted: #91959b;
  --diagram-model: #9ea9b8;
  --diagram-model-active: #8997a9;
  --diagram-hidden: #d9b8dc;
  --diagram-hidden-active: #c78fca;
  --diagram-embedding: #f2cf82;
  --diagram-embedding-active: #e9b94e;
  --diagram-path: #cfd1d4;
  --diagram-path-active: #9ba2ab;
  --diagram-focus: #5f6d80;
  --diagram-continuous: #d79338;
  --transformer-attention: #f4d9af;
  --transformer-attention-active: #e5ad5a;
  --transformer-ffn: #bfe4ef;
  --transformer-ffn-active: #66bdd2;
  --transformer-norm: #f4efb6;
  --transformer-norm-active: #d8ca58;
  --transformer-embedding: #efc9cf;
  --transformer-embedding-active: #d98291;
  --transformer-output: #c8e0c8;
  --transformer-output-active: #75b57a;
  --transformer-linear: #d9dce9;
  --transformer-stack: #8090a8;
  --shadow: 0 24px 70px rgb(45 63 98 / 0.13);
  --radius: 18px;
  --control-radius: 10px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #0f1521;
    --page-wash: #141c2a;
    --surface: #171f2d;
    --surface-raised: #1c2636;
    --surface-strong: #243146;
    --ink: #edf2fa;
    --muted: #b5c0d1;
    --subtle: #8f9db2;
    --line: #344156;
    --line-strong: #53637b;
    --accent: #78a0ff;
    --accent-strong: #a8c0ff;
    --accent-soft: #223b73;
    --reasoning: #253e76;
    --private: #2a3445;
    --latent: #e5a459;
    --latent-strong: #f3c48c;
    --latent-soft: #593b21;
    --error: #f0a09b;
    --error-soft: #4b292c;
    --paper: #f7f9fc;
    --paper-ink: #172033;
    --shadow: 0 28px 80px rgb(2 6 14 / 0.38);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
  background:
    radial-gradient(circle at 12% 6%, rgb(36 87 214 / 0.11), transparent 32rem),
    linear-gradient(150deg, var(--page), var(--page-wash));
  color: var(--ink);
  font-family:
    "Avenir Next",
    "Helvetica Neue",
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  text-rendering: optimizeLegibility;
}

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

button {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--accent-strong);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 30;
  transform: translateY(-160%);
  border: 1px solid var(--line-strong);
  border-radius: var(--control-radius);
  background: var(--surface);
  color: var(--ink);
  padding: 9px 12px;
  font-weight: 700;
  transition: transform 160ms var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

.deck-shell {
  width: min(1480px, calc(100% - 28px));
  min-height: 100dvh;
  margin: 0 auto;
  padding: 12px 0 18px;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(300px, 1fr) auto;
  gap: 20px;
  min-height: 62px;
  align-items: center;
}

.brand-block {
  display: flex;
  min-width: 0;
  align-items: baseline;
  gap: 14px;
}

.course-mark {
  flex: 0 0 auto;
  color: var(--accent-strong);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

h1 {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  color: var(--ink);
  font-family: "Jersey 10", Impact, sans-serif;
  font-size: clamp(1.18rem, 1.75vw, 1.48rem);
  font-weight: 400;
  letter-spacing: 0.012em;
  line-height: 1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  white-space: nowrap;
}

.control-button,
.figure-tab,
.dot-button {
  border: 1px solid var(--line);
  border-radius: var(--control-radius);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  font-weight: 720;
  transition:
    transform 130ms var(--ease),
    border-color 180ms var(--ease),
    background 180ms var(--ease),
    color 180ms var(--ease);
}

.control-button {
  min-height: 38px;
  padding: 0 12px;
  font-size: 0.86rem;
}

.control-button:hover,
.figure-tab:hover,
.dot-button:hover {
  border-color: var(--accent);
}

.control-button:active,
.figure-tab:active,
.dot-button:active {
  transform: translateY(1px) scale(0.985);
}

.control-button:focus-visible,
.figure-tab:focus-visible,
.dot-button:focus-visible,
a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 48%, transparent);
  outline-offset: 2px;
}

.control-button-primary,
.control-button[aria-pressed="true"],
.figure-tab.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: #f4f7ff;
}

.control-button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.slide-counter {
  min-width: 56px;
  border: 1px solid var(--line);
  border-radius: var(--control-radius);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  padding: 9px 10px;
  color: var(--muted);
  font-size: 0.84rem;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.progress-track {
  height: 3px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line);
}

.progress-fill {
  width: calc(100% / 9);
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transition: width 260ms var(--ease);
}

.slides {
  margin-top: 12px;
}

.slide {
  display: none;
  min-height: calc(100dvh - 158px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  box-shadow: var(--shadow);
  padding: clamp(26px, 3.7vw, 52px);
}

.slide.is-active {
  display: block;
}

.slide.is-active .enter {
  animation: enter-slide 520ms var(--ease) both;
}

.slide.is-active .enter-second {
  animation-delay: 80ms;
}

.slide.is-active .enter-third {
  animation-delay: 150ms;
}

.slide.is-active .enter-fourth {
  animation-delay: 220ms;
}

@keyframes enter-slide {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

h2,
h3,
p,
blockquote,
figure {
  margin-top: 0;
}

h2 {
  max-width: 1080px;
  margin-bottom: 0;
  font-family: "Jersey 10", Impact, sans-serif;
  font-size: clamp(2.3rem, 4.35vw, 4.65rem);
  font-weight: 400;
  letter-spacing: 0.004em;
  line-height: 0.92;
}

h3 {
  margin-bottom: 7px;
  font-family: "Jersey 10", Impact, sans-serif;
  font-size: clamp(1.12rem, 1.8vw, 1.5rem);
  font-weight: 400;
  letter-spacing: 0.008em;
  line-height: 1.02;
}

p {
  color: var(--muted);
  font-size: clamp(0.98rem, 1.2vw, 1.13rem);
  line-height: 1.5;
}

.slide-heading {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(24px, 3.6vw, 42px);
}

.slide-heading p {
  max-width: 72ch;
  margin-bottom: 0;
  font-family: "Jersey 10", Impact, sans-serif;
  font-size: clamp(1.04rem, 1.55vw, 1.3rem);
  font-weight: 400;
  letter-spacing: 0.016em;
  line-height: 1.08;
}

.slide-title {
  position: relative;
  isolation: isolate;
  background:
    radial-gradient(circle at 78% 24%, color-mix(in srgb, var(--accent) 21%, transparent), transparent 25rem),
    radial-gradient(circle at 19% 84%, color-mix(in srgb, var(--latent) 17%, transparent), transparent 22rem),
    color-mix(in srgb, var(--surface) 94%, transparent);
}

.slide-title::before,
.slide-title::after {
  position: absolute;
  z-index: -1;
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
  border-radius: 50%;
  content: "";
}

.slide-title::before {
  top: -25%;
  right: -7%;
  width: min(42vw, 620px);
  aspect-ratio: 1;
}

.slide-title::after {
  bottom: -34%;
  left: -8%;
  width: min(34vw, 480px);
  aspect-ratio: 1;
  border-color: color-mix(in srgb, var(--latent) 24%, transparent);
}

.title-slide-layout {
  display: grid;
  min-height: calc(100dvh - 260px);
  align-content: center;
  justify-items: center;
  text-align: center;
}

.title-slide-kicker {
  margin: 0 0 clamp(20px, 3vw, 34px);
  color: var(--accent-strong);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(0.75rem, 1vw, 0.92rem);
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.title-slide-layout h2 {
  max-width: 18ch;
  font-size: clamp(3.5rem, 7.2vw, 8rem);
  line-height: 0.88;
  text-wrap: balance;
}

.title-slide-layout h2 span {
  display: block;
  color: var(--accent-strong);
}

.title-slide-path {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  align-items: center;
  justify-content: center;
  margin-top: clamp(34px, 5vw, 60px);
  color: var(--muted);
  font-size: clamp(0.86rem, 1.1vw, 1rem);
  font-weight: 720;
}

.title-slide-path span:nth-child(even) {
  color: var(--accent);
}

.slide-reasoning-intro {
  position: relative;
}

.slide-reasoning-intro::after {
  position: absolute;
  right: -8%;
  bottom: -38%;
  width: min(46vw, 650px);
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--accent) 16%, transparent);
  border-radius: 50%;
  background:
    radial-gradient(
      circle,
      color-mix(in srgb, var(--accent-soft) 78%, transparent) 0 34%,
      transparent 35% 100%
    );
  content: "";
  pointer-events: none;
}

.reasoning-intro-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(360px, 0.84fr) minmax(520px, 1.16fr);
  gap: clamp(30px, 4.5vw, 72px);
  min-height: calc(100dvh - 260px);
  align-items: center;
}

.reasoning-intro-copy {
  display: grid;
  align-content: center;
}

.reasoning-intro-copy h2 {
  max-width: 8.5ch;
  font-size: clamp(3.7rem, 6.6vw, 7.35rem);
}

.reasoning-intro-subtitle {
  max-width: 21ch;
  margin: 24px 0 0;
  color: var(--muted);
  font-family: "Jersey 10", Impact, sans-serif;
  font-size: clamp(1.35rem, 2.15vw, 1.88rem);
  font-weight: 400;
  letter-spacing: 0.014em;
  line-height: 1.08;
}

.reasoning-intro-thesis {
  max-width: 31ch;
  margin: clamp(34px, 5vw, 58px) 0 0;
  border-left: 5px solid var(--accent);
  padding: 3px 0 3px 18px;
  color: var(--ink);
  font-size: clamp(1.02rem, 1.35vw, 1.2rem);
  font-weight: 720;
  line-height: 1.42;
}

.reasoning-example-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(12px, 1.5vw, 18px);
}

.reasoning-flip-card {
  min-width: 0;
  min-height: clamp(164px, 18vw, 205px);
  border: 0;
  border-radius: var(--radius);
  background: transparent;
  padding: 0;
  color: var(--ink);
  cursor: pointer;
  perspective: 1100px;
  text-align: left;
}

.reasoning-flip-card:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 4px;
}

.reasoning-flip-card-inner {
  position: relative;
  display: block;
  width: 100%;
  min-height: inherit;
  transform-style: preserve-3d;
  transition: transform 460ms var(--ease);
}

.reasoning-flip-card.is-flipped .reasoning-flip-card-inner {
  transform: rotateY(180deg);
}

.reasoning-flip-card-face {
  position: absolute;
  inset: 0;
  display: grid;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: clamp(17px, 2.2vw, 25px);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  box-shadow: 0 14px 32px rgb(34 52 88 / 0.12);
  font-size: clamp(0.98rem, 1.35vw, 1.18rem);
  font-weight: 720;
  line-height: 1.38;
}

.reasoning-flip-card-front {
  background: var(--surface-raised);
}

.reasoning-flip-card:nth-child(2) .reasoning-flip-card-front,
.reasoning-flip-card:nth-child(3) .reasoning-flip-card-front {
  background: color-mix(in srgb, var(--accent-soft) 42%, var(--surface));
}

.reasoning-flip-card-back {
  transform: rotateY(180deg);
  border-color: color-mix(in srgb, var(--error) 45%, var(--line));
  background: var(--error-soft);
  color: var(--error);
}

.reasoning-flip-card:active .reasoning-flip-card-inner {
  scale: 0.985;
}

@media (hover: hover) and (pointer: fine) {
  .reasoning-flip-card:hover .reasoning-flip-card-inner {
    transform: rotateY(180deg);
  }
}

.paper-figure {
  min-width: 0;
  margin-bottom: 0;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--line-strong) 65%, transparent);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 0 18px 40px rgb(37 55 90 / 0.12);
}

.paper-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  background: var(--paper);
}

.paper-figure figcaption {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  align-items: baseline;
  border-top: 1px solid #d6deea;
  background: #f3f6fb;
  padding: 9px 12px 10px;
  color: #59657a;
  font-size: 0.75rem;
  line-height: 1.35;
}

.paper-figure figcaption a {
  color: #173f9f;
  font-weight: 780;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.direct-layout {
  display: grid;
  grid-template-columns: minmax(560px, 1.35fr) minmax(250px, 0.55fr);
  gap: clamp(30px, 5vw, 72px);
  align-items: center;
}

.direct-story {
  display: grid;
  gap: 28px;
}

.linear-flow {
  display: grid;
  grid-template-columns: minmax(110px, 0.7fr) auto minmax(190px, 1fr) auto minmax(110px, 0.7fr);
  gap: 10px;
  align-items: center;
}

.flow-node {
  display: grid;
  min-height: 92px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface-raised);
  padding: 16px;
  color: var(--ink);
  font-weight: 760;
  text-align: center;
}

.flow-model {
  min-height: 126px;
  border: 2px solid var(--accent);
  background: var(--accent-soft);
}

.flow-model strong,
.flow-model span {
  display: block;
}

.flow-model span {
  margin-top: 6px;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.76rem;
}

.flow-answer {
  background: var(--surface-strong);
}

.flow-arrow,
.token-arrow {
  color: var(--accent);
  font-size: 1.45rem;
  font-weight: 800;
}

.key-statement,
.faithfulness-note {
  margin-bottom: 0;
  border-left: 5px solid var(--accent);
  padding: 4px 0 4px 18px;
  color: var(--ink);
  font-size: clamp(1.25rem, 2.1vw, 2rem);
  font-weight: 710;
  line-height: 1.28;
}

.key-statement.compact {
  font-size: clamp(1.08rem, 1.55vw, 1.42rem);
}

.precision-note {
  max-width: 66ch;
  margin-bottom: 0;
  font-size: 0.94rem;
}

.transformer-figure {
  justify-self: center;
  width: min(100%, 380px);
}

.transformer-figure img {
  max-height: 490px;
}

.slide-transformer {
  padding-top: clamp(24px, 2.8vw, 40px);
  padding-bottom: clamp(24px, 2.8vw, 40px);
}

.transformer-slide-heading {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  margin-bottom: 14px;
}

.transformer-slide-heading > div:first-child {
  display: grid;
  gap: 6px;
}

.transformer-slide-heading h2 {
  font-size: clamp(2.3rem, 3.8vw, 4.1rem);
}

.transformer-slide-heading > div:first-child p {
  margin: 0;
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
}

.transformer-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.transformer-explorer {
  display: grid;
  gap: 8px;
}

.transformer-figure-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--diagram-canvas);
}

.transformer-instruction {
  margin: 0;
  border-bottom: 1px solid var(--diagram-line);
  background: var(--diagram-panel);
  padding: 7px 12px;
  color: var(--diagram-muted);
  font-size: 0.72rem;
  font-weight: 680;
}

.transformer-diagram-scroll {
  display: flex;
  width: 100%;
  justify-content: center;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  background: var(--diagram-canvas);
}

.transformer-semantic-diagram {
  display: block;
  width: min(100%, 1020px);
  min-width: 900px;
  height: auto;
  user-select: none;
  -webkit-user-select: none;
}

.transformer-connections path {
  fill: none;
  stroke: #5e6470;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.45;
  marker-end: url("#transformer-arrow");
  vector-effect: non-scaling-stroke;
}

.transformer-connections .transformer-residual {
  stroke: #8a8f98;
  stroke-width: 1.25;
}

.transformer-arrow-head {
  fill: #5e6470;
}

.transformer-static-copy {
  pointer-events: none;
}

.transformer-column-title {
  fill: #1f2937;
  font-size: 21px;
  font-weight: 780;
  letter-spacing: -0.02em;
}

.transformer-output-label,
.transformer-input-label {
  fill: #596273;
  font-size: 12px;
  font-weight: 650;
}

.transformer-diagram-part {
  cursor: pointer;
  outline: none;
  transition: opacity 180ms var(--ease);
}

.transformer-semantic-diagram.has-active .transformer-diagram-part:not(.is-active) {
  opacity: 0.2;
}

.transformer-diagram-hit {
  fill: transparent;
  stroke: transparent;
  pointer-events: all;
}

.transformer-module,
.transformer-sum-node,
.transformer-position-symbol,
.transformer-stack-outline {
  stroke: #222934;
  stroke-width: 1.4;
  vector-effect: non-scaling-stroke;
  transition:
    fill 180ms var(--ease),
    stroke 180ms var(--ease),
    stroke-width 180ms var(--ease),
    filter 180ms var(--ease);
}

.transformer-module-embedding {
  fill: var(--transformer-embedding);
}

.transformer-module-attention,
.transformer-module-masked {
  fill: var(--transformer-attention);
}

.transformer-module-ffn {
  fill: var(--transformer-ffn);
}

.transformer-module-norm {
  fill: var(--transformer-norm);
}

.transformer-module-softmax {
  fill: var(--transformer-output);
}

.transformer-module-linear {
  fill: var(--transformer-linear);
}

.transformer-sum-node {
  fill: #ffffff;
}

.transformer-position-symbol {
  fill: #f8fbff;
}

.transformer-stack-outline {
  fill: none;
  stroke: var(--transformer-stack);
  stroke-width: 1.5;
}

.transformer-repeat-label {
  fill: #596273;
  font-size: 18px;
  font-weight: 780;
  pointer-events: none;
}

.transformer-module-label,
.transformer-position-label {
  fill: #1f2937;
  pointer-events: none;
}

.transformer-module-label {
  font-size: 12px;
  font-weight: 700;
}

.transformer-position-label {
  fill: #4f5b6d;
  font-size: 12px;
  font-weight: 700;
}

.transformer-position-encoding {
  pointer-events: none;
}

.transformer-position-wave,
.transformer-position-connector,
.transformer-sum-glyph {
  fill: none;
  stroke: #4f5865;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
  pointer-events: none;
  transition: stroke 180ms var(--ease);
}

.transformer-diagram-part:hover .transformer-module,
.transformer-diagram-part:focus-visible .transformer-module,
.transformer-diagram-part.is-active .transformer-module,
.transformer-diagram-part:hover .transformer-sum-node,
.transformer-diagram-part:focus-visible .transformer-sum-node,
.transformer-diagram-part.is-active .transformer-sum-node,
.transformer-diagram-part:hover .transformer-position-symbol,
.transformer-diagram-part:focus-visible .transformer-position-symbol,
.transformer-diagram-part.is-active .transformer-position-symbol,
.transformer-diagram-part:hover .transformer-stack-outline,
.transformer-diagram-part:focus-visible .transformer-stack-outline,
.transformer-diagram-part.is-active .transformer-stack-outline {
  stroke: #2457d6;
  stroke-width: 2.5;
  filter: drop-shadow(0 3px 5px rgb(36 87 214 / 0.18));
}

.transformer-diagram-part.is-pinned .transformer-module,
.transformer-diagram-part.is-pinned .transformer-sum-node,
.transformer-diagram-part.is-pinned .transformer-position-symbol,
.transformer-diagram-part.is-pinned .transformer-stack-outline {
  stroke-width: 3;
}

.transformer-diagram-part-embeddings:hover .transformer-position-wave,
.transformer-diagram-part-embeddings:hover .transformer-position-connector,
.transformer-diagram-part-embeddings:hover .transformer-sum-glyph,
.transformer-diagram-part-embeddings:focus-visible .transformer-position-wave,
.transformer-diagram-part-embeddings:focus-visible .transformer-position-connector,
.transformer-diagram-part-embeddings:focus-visible .transformer-sum-glyph,
.transformer-diagram-part-embeddings.is-active .transformer-position-wave,
.transformer-diagram-part-embeddings.is-active .transformer-position-connector,
.transformer-diagram-part-embeddings.is-active .transformer-sum-glyph {
  stroke: #2457d6;
}

.transformer-diagram-part-embeddings:hover .transformer-module,
.transformer-diagram-part-embeddings:focus-visible .transformer-module,
.transformer-diagram-part-embeddings.is-active .transformer-module {
  fill: var(--transformer-embedding-active);
}

.transformer-diagram-part-attention:hover .transformer-module,
.transformer-diagram-part-attention:focus-visible .transformer-module,
.transformer-diagram-part-attention.is-active .transformer-module,
.transformer-diagram-part-masked:hover .transformer-module,
.transformer-diagram-part-masked:focus-visible .transformer-module,
.transformer-diagram-part-masked.is-active .transformer-module {
  fill: var(--transformer-attention-active);
}

.transformer-diagram-part-ffn:hover .transformer-module,
.transformer-diagram-part-ffn:focus-visible .transformer-module,
.transformer-diagram-part-ffn.is-active .transformer-module {
  fill: var(--transformer-ffn-active);
}

.transformer-diagram-part-norm:hover .transformer-module,
.transformer-diagram-part-norm:focus-visible .transformer-module,
.transformer-diagram-part-norm.is-active .transformer-module {
  fill: var(--transformer-norm-active);
}

.transformer-diagram-part-output:hover .transformer-module-softmax,
.transformer-diagram-part-output:focus-visible .transformer-module-softmax,
.transformer-diagram-part-output.is-active .transformer-module-softmax {
  fill: var(--transformer-output-active);
}

.transformer-figure-caption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 16px;
  border-top: 1px solid var(--diagram-line);
  background: var(--diagram-panel);
  padding: 6px 12px 7px;
  color: var(--diagram-muted);
  font-size: 0.68rem;
  line-height: 1.35;
}

.transformer-figure-caption a {
  color: #173f9f;
  font-weight: 790;
  text-underline-offset: 2px;
}

.transformer-part-rail {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--control-radius);
  background: var(--surface-raised);
}

.transformer-part-rail button,
.transformer-text-button {
  border: 0;
  color: var(--ink);
  cursor: pointer;
  font-weight: 730;
}

.transformer-part-rail button {
  display: flex;
  min-width: 0;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border-right: 1px solid var(--line);
  background: transparent;
  padding: 6px 8px;
  color: var(--muted);
  font-size: 0.7rem;
  line-height: 1.15;
  transition:
    background 180ms var(--ease),
    color 180ms var(--ease),
    transform 130ms var(--ease);
}

.transformer-part-rail button:last-child {
  border-right: 0;
}

.transformer-part-rail button:hover,
.transformer-part-rail button.is-active {
  background: var(--accent-soft);
  color: var(--ink);
}

.transformer-part-rail button:active,
.transformer-text-button:active:not(:disabled) {
  transform: translateY(1px) scale(0.985);
}

.transformer-part-rail button:focus-visible,
.transformer-text-button:focus-visible {
  position: relative;
  z-index: 1;
  outline: 3px solid color-mix(in srgb, var(--accent) 48%, transparent);
  outline-offset: -3px;
}

.transformer-part-key {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border: 1px solid rgb(31 41 55 / 0.35);
  border-radius: 2px;
}

.transformer-part-key-embedding {
  background: var(--transformer-embedding);
}

.transformer-part-key-masked,
.transformer-part-key-attention {
  background: var(--transformer-attention);
}

.transformer-part-key-norm {
  background: var(--transformer-norm);
}

.transformer-part-key-ffn {
  background: var(--transformer-ffn);
}

.transformer-part-key-stack {
  background: var(--transformer-stack);
}

.transformer-part-key-output {
  background: var(--transformer-output);
}

.transformer-inspector {
  display: grid;
  grid-template-columns: minmax(360px, 1.25fr) minmax(360px, 0.95fr);
  gap: clamp(18px, 2.5vw, 38px);
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-raised);
  padding: 12px 16px;
}

.transformer-inspector-copy {
  display: grid;
  gap: 4px;
}

.transformer-inspector-heading-row {
  display: flex;
  min-height: 20px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.transformer-inspector-eyebrow {
  margin: 0;
  color: var(--accent-strong);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.065em;
  text-transform: uppercase;
}

.transformer-selection-state {
  border: 1px solid color-mix(in srgb, var(--accent) 50%, var(--line));
  border-radius: 999px;
  background: var(--accent-soft);
  padding: 3px 7px;
  color: var(--accent-strong);
  font-size: 0.62rem;
  font-weight: 780;
}

.transformer-inspector h3 {
  margin: 0;
  font-size: clamp(1.05rem, 1.4vw, 1.3rem);
  font-weight: 400;
  letter-spacing: 0.008em;
  line-height: 1;
}

.transformer-inspector-summary,
.transformer-inspector-detail,
.transformer-formula-card p {
  margin: 0;
  line-height: 1.32;
}

.transformer-inspector-summary {
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 650;
}

.transformer-inspector-detail {
  color: var(--muted);
  font-size: 0.73rem;
}

.transformer-formula-card {
  display: grid;
  gap: 5px;
  border-left: 2px solid var(--line-strong);
  padding-left: 16px;
}

.transformer-formula-card > span {
  color: var(--subtle);
  font-size: 0.62rem;
  font-weight: 780;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.math-formula {
  display: flex;
  min-height: 2.35em;
  align-items: center;
  padding: 0.18em 0 0.28em;
  font-variant-numeric: lining-nums tabular-nums;
  scrollbar-color: color-mix(in srgb, currentColor 28%, transparent) transparent;
  scrollbar-width: thin;
}

.math-formula::-webkit-scrollbar {
  height: 5px;
}

.math-formula::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: color-mix(in srgb, currentColor 28%, transparent);
}

.transformer-formula-card .math-formula {
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  color: var(--ink);
  font-size: clamp(1.05rem, 1.35vw, 1.32rem);
  line-height: 1.65;
  white-space: nowrap;
}

.transformer-formula-card p {
  color: var(--muted);
  font-size: 0.7rem;
}

.transformer-walkthrough-controls {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.transformer-walkthrough-controls[hidden] {
  display: none;
}

.transformer-walkthrough-controls p {
  margin: 0;
  color: var(--subtle);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.65rem;
  font-weight: 760;
}

.transformer-walkthrough-controls > div {
  display: flex;
  gap: 7px;
}

.transformer-text-button {
  min-height: 30px;
  border-radius: 8px;
  background: var(--surface-strong);
  padding: 0 10px;
  font-size: 0.72rem;
  transition:
    transform 130ms var(--ease),
    background 180ms var(--ease);
}

.transformer-text-button:hover:not(:disabled) {
  background: var(--accent-soft);
}

.transformer-text-button-next {
  background: var(--accent);
  color: #f4f7ff;
}

.transformer-text-button-next:hover:not(:disabled) {
  background: var(--accent-strong);
}

.transformer-text-button:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}

.transformer-distinction {
  border-left-color: var(--transformer-stack);
  padding-top: 2px;
  padding-bottom: 2px;
  font-size: clamp(0.98rem, 1.4vw, 1.24rem);
}

.workspace-layout {
  display: grid;
  grid-template-columns: minmax(330px, 0.72fr) minmax(600px, 1.28fr);
  gap: clamp(28px, 4vw, 58px);
  align-items: start;
}

.workspace-explanation {
  display: grid;
  gap: 28px;
}

.token-workspace {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  align-items: center;
}

.token {
  border: 1px solid var(--line-strong);
  border-radius: var(--control-radius);
  background: var(--surface-raised);
  padding: 11px 13px;
  color: var(--ink);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.82rem;
  font-weight: 760;
}

.token-reasoning {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: var(--reasoning);
}

.token-answer {
  border-color: var(--accent);
  background: var(--accent);
  color: #f4f7ff;
}

.fact-stack {
  display: grid;
  gap: 16px;
}

.fact-stack p {
  margin-bottom: 0;
  padding-left: 16px;
  border-left: 2px solid var(--line-strong);
}

.fact-stack strong {
  color: var(--ink);
}

.workspace-takeaway {
  margin: 0;
  font-size: clamp(1rem, 1.45vw, 1.28rem);
}

.figure-switcher {
  min-width: 0;
}

.figure-switcher-controls {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.figure-tab {
  min-height: 38px;
  padding: 0 13px;
  font-size: 0.84rem;
}

.switchable-figure {
  min-height: 360px;
}

.switchable-figure img {
  height: clamp(290px, 38vh, 390px);
  padding: 12px;
  transition:
    opacity 180ms var(--ease),
    transform 180ms var(--ease);
}

.switchable-figure img.is-changing {
  opacity: 0;
  transform: translateY(6px);
}

.training-layout {
  display: grid;
  gap: clamp(24px, 3vw, 34px);
}

.comparison-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-raised);
}

.comparison-band article {
  padding: clamp(18px, 2vw, 26px);
}

.comparison-band article + article {
  border-left: 1px solid var(--line);
  background: var(--accent-soft);
}

.comparison-band p {
  margin-bottom: 12px;
}

.comparison-band strong {
  color: var(--ink);
}

.training-evidence {
  display: grid;
  grid-template-columns: minmax(310px, 0.68fr) minmax(620px, 1.32fr);
  gap: clamp(28px, 4vw, 54px);
  align-items: center;
}

.training-thesis {
  display: grid;
  gap: 13px;
}

.training-thesis > p {
  margin-bottom: 0;
  color: var(--ink);
  font-size: clamp(1.06rem, 1.5vw, 1.3rem);
  font-weight: 650;
  line-height: 1.35;
}

.example-line {
  display: grid;
  gap: 4px;
  margin-top: 5px;
}

.example-line span {
  color: var(--subtle);
  font-size: 0.78rem;
  font-weight: 720;
}

.example-line strong {
  color: var(--ink);
  font-size: 0.92rem;
  line-height: 1.35;
}

.quietstar-figure img {
  max-height: 360px;
  padding: 10px;
}

.quietstar-explorer {
  background: #fbfcfe;
}

.quietstar-toolbar {
  display: flex;
  min-height: 32px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid #d6deea;
  background: #f3f6fb;
  padding: 5px 9px;
}

.quietstar-toolbar p {
  margin: 0;
  color: #657083;
  font-size: 0.65rem;
  font-weight: 680;
}

.quietstar-toolbar > div {
  display: flex;
  gap: 5px;
}

.quietstar-toolbar-button,
.quietstar-step-button {
  border: 1px solid #aab6c8;
  border-radius: 7px;
  background: #f9fbfe;
  color: #233049;
  cursor: pointer;
  font-weight: 740;
  transition:
    background 160ms var(--ease),
    border-color 160ms var(--ease),
    transform 120ms var(--ease);
}

.quietstar-toolbar-button {
  min-height: 24px;
  padding: 0 8px;
  font-size: 0.62rem;
}

.quietstar-toolbar-button:hover:not(:disabled),
.quietstar-step-button:hover:not(:disabled) {
  border-color: #2457d6;
  background: #e5edff;
}

.quietstar-toolbar-button:active:not(:disabled),
.quietstar-step-button:active:not(:disabled) {
  transform: translateY(1px) scale(0.985);
}

.quietstar-toolbar-button:focus-visible,
.quietstar-step-button:focus-visible {
  outline: 3px solid rgb(36 87 214 / 0.32);
  outline-offset: 1px;
}

.quietstar-toolbar-button:disabled,
.quietstar-step-button:disabled {
  cursor: not-allowed;
  opacity: 0.4;
}

.quietstar-diagram-scroll {
  display: flex;
  width: 100%;
  justify-content: center;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  background: #ffffff;
}

.quietstar-semantic-diagram {
  display: block;
  width: 100%;
  min-width: 620px;
  height: auto;
  max-height: clamp(220px, 28vh, 310px);
  user-select: none;
  -webkit-user-select: none;
}

.quietstar-static-routes path,
.quietstar-thought-loops path,
.quietstar-thought-arrow,
.quietstar-route,
.quietstar-learn-arrow {
  fill: none;
  stroke: #080b0f;
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 2;
  marker-end: url("#quietstar-arrow");
  vector-effect: non-scaling-stroke;
}

.quietstar-static-routes path {
  stroke-width: 1.7;
}

.quietstar-thought-loops path {
  stroke-width: 1.6;
}

.quietstar-route {
  stroke-width: 2.2;
}

.quietstar-arrow-head {
  fill: #080b0f;
}

.quietstar-diagram-part {
  cursor: pointer;
  outline: none;
  transition: opacity 180ms var(--ease);
}

.quietstar-semantic-diagram.has-active .quietstar-diagram-part:not(.is-active) {
  opacity: 0.18;
}

.quietstar-diagram-hit {
  fill: transparent;
  stroke: transparent;
  pointer-events: all;
}

.quietstar-original-label,
.quietstar-panel-label,
.quietstar-token-text,
.quietstar-thought-text,
.quietstar-stage-label,
.quietstar-evaluation-label,
.quietstar-check,
.quietstar-cross,
.quietstar-outcome-label,
.quietstar-outcome-main,
.quietstar-outcome-sub,
.quietstar-route-label,
.quietstar-lm-labels,
.quietstar-thought-labels {
  fill: #111318;
  pointer-events: none;
}

.quietstar-original-label {
  font-size: 24px;
  font-weight: 720;
}

.quietstar-token,
.quietstar-thought-token,
.quietstar-thought-panel,
.quietstar-outcome-box {
  stroke-width: 2.2;
  vector-effect: non-scaling-stroke;
  transition:
    stroke 180ms var(--ease),
    stroke-width 180ms var(--ease),
    filter 180ms var(--ease);
}

.quietstar-token {
  stroke: #183761;
}

.quietstar-token-red {
  fill: #e8aca8;
  stroke: #9d160f;
}

.quietstar-token-coral {
  fill: #f0c0b8;
  stroke: #8e4c0b;
}

.quietstar-token-gold {
  fill: #f4d99d;
  stroke: #7c5700;
}

.quietstar-token-yellow {
  fill: #f7e9b2;
  stroke: #806200;
}

.quietstar-token-green {
  fill: #c9e4bf;
  stroke: #2f722b;
}

.quietstar-token-gray {
  fill: #c1d7db;
  stroke: #18505b;
}

.quietstar-token-blue {
  fill: #b9d0ee;
  stroke: #264f90;
}

.quietstar-token-sky {
  fill: #c8def0;
  stroke: #135894;
}

.quietstar-token-purple {
  fill: #d5cee7;
  stroke: #4b2a86;
}

.quietstar-token-text {
  font-size: 28px;
  font-weight: 520;
}

.quietstar-newline-text {
  fill: #5e566b;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 24px;
}

.quietstar-lm-labels,
.quietstar-thought-labels,
.quietstar-route-label {
  font-size: 14px;
  font-weight: 520;
}

.quietstar-thought-panel {
  fill: #f1f2f4;
  stroke: #666a70;
  stroke-width: 3;
}

.quietstar-panel-label {
  font-size: 27px;
  font-weight: 710;
}

.quietstar-stage-label {
  fill: #3b852a;
  font-size: 27px;
  font-style: italic;
  font-weight: 760;
}

.quietstar-thought-token {
  fill: #77a2e1;
  stroke: #1f4f93;
}

.quietstar-thought-boundary {
  fill: #a8c0e7;
}

.quietstar-thought-gradient {
  fill: url("#quietstar-thought-gradient");
}

.quietstar-thought-text {
  font-size: 27px;
  font-weight: 520;
}

.quietstar-boundary-text {
  font-size: 14px;
  font-weight: 650;
}

.quietstar-evaluation-label {
  font-size: 23px;
  font-weight: 520;
}

.quietstar-check {
  fill: #63c93e;
  font-size: 82px;
  font-weight: 850;
}

.quietstar-cross {
  fill: #e10909;
  font-size: 78px;
  font-weight: 900;
}

.quietstar-learn-arrow {
  stroke-width: 2.2;
}

.quietstar-outcome-label {
  font-size: 22px;
  font-weight: 520;
}

.quietstar-outcome-box {
  fill: #f0f1f2;
  stroke: #70747a;
  stroke-width: 2.4;
}

.quietstar-lm-box {
  fill: #eef2ed;
}

.quietstar-discard-box {
  fill: #f4f7f2;
}

.quietstar-outcome-main {
  font-size: 26px;
  font-weight: 760;
}

.quietstar-outcome-sub {
  fill: #596273;
  font-size: 14px;
  font-weight: 650;
}

.quietstar-trash-icon {
  pointer-events: none;
}

.quietstar-trash-handle,
.quietstar-trash-paper,
.quietstar-trash-lid,
.quietstar-trash-body,
.quietstar-trash-smile,
.quietstar-trash-wheel {
  stroke: #172033;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.quietstar-trash-handle,
.quietstar-trash-smile {
  fill: none;
}

.quietstar-trash-paper {
  fill: #ffdd72;
}

.quietstar-trash-lid {
  fill: #c9eb79;
}

.quietstar-trash-body {
  fill: #99d86e;
}

.quietstar-trash-eye {
  fill: #172033;
}

.quietstar-trash-wheel {
  fill: #79a7f8;
}

.quietstar-diagram-part:hover .quietstar-token,
.quietstar-diagram-part:focus-visible .quietstar-token,
.quietstar-diagram-part.is-active .quietstar-token,
.quietstar-diagram-part:hover .quietstar-thought-token,
.quietstar-diagram-part:focus-visible .quietstar-thought-token,
.quietstar-diagram-part.is-active .quietstar-thought-token,
.quietstar-diagram-part:hover .quietstar-thought-panel,
.quietstar-diagram-part:focus-visible .quietstar-thought-panel,
.quietstar-diagram-part.is-active .quietstar-thought-panel,
.quietstar-diagram-part:hover .quietstar-outcome-box,
.quietstar-diagram-part:focus-visible .quietstar-outcome-box,
.quietstar-diagram-part.is-active .quietstar-outcome-box {
  stroke: #2457d6;
  stroke-width: 3.2;
  filter: drop-shadow(0 3px 5px rgb(36 87 214 / 0.2));
}

.quietstar-diagram-part.is-pinned .quietstar-token,
.quietstar-diagram-part.is-pinned .quietstar-thought-token,
.quietstar-diagram-part.is-pinned .quietstar-thought-panel,
.quietstar-diagram-part.is-pinned .quietstar-outcome-box {
  stroke-width: 3.8;
}

.quietstar-part-talk:hover .quietstar-route,
.quietstar-part-talk:focus-visible .quietstar-route,
.quietstar-part-talk.is-active .quietstar-route,
.quietstar-part-learn:hover .quietstar-learn-arrow,
.quietstar-part-learn:focus-visible .quietstar-learn-arrow,
.quietstar-part-learn.is-active .quietstar-learn-arrow {
  stroke: #2457d6;
}

.quietstar-inspector {
  display: grid;
  grid-template-columns: minmax(230px, 1.15fr) minmax(240px, 0.9fr) auto;
  gap: 14px;
  align-items: center;
  border-top: 1px solid #d6deea;
  background: #f8fafd;
  padding: 8px 10px;
}

.quietstar-inspector-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.quietstar-inspector-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.quietstar-inspector-heading p {
  margin: 0;
  color: #2457d6;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.56rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.quietstar-inspector-heading span {
  border: 1px solid #9eb6ee;
  border-radius: 999px;
  background: #e5edff;
  padding: 2px 6px;
  color: #173f9f;
  font-size: 0.54rem;
  font-weight: 780;
}

.quietstar-inspector h3 {
  margin: 0;
  color: #172033;
  font-size: clamp(0.84rem, 1.1vw, 1.03rem);
  font-weight: 400;
  line-height: 1;
}

.quietstar-inspector-summary {
  margin: 0;
  color: #59657a;
  font-size: 0.66rem;
  line-height: 1.3;
}

.quietstar-formula {
  display: grid;
  gap: 3px;
  min-width: 0;
  border-left: 2px solid #aab6c8;
  padding-left: 12px;
}

.quietstar-formula .math-formula {
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  color: #172033;
  font-size: clamp(1rem, 1.22vw, 1.18rem);
  line-height: 1.65;
  white-space: nowrap;
}

.quietstar-formula p {
  margin: 0;
  color: #657083;
  font-size: 0.6rem;
  line-height: 1.25;
}

.quietstar-step-controls {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 4px;
  justify-items: stretch;
}

.quietstar-step-controls[hidden] {
  display: none;
}

.quietstar-step-controls span {
  grid-column: 1 / -1;
  color: #657083;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.56rem;
  font-weight: 760;
  text-align: center;
}

.quietstar-step-button {
  min-height: 24px;
  padding: 0 7px;
  font-size: 0.58rem;
}

.quietstar-step-button-next {
  border-color: #2457d6;
  background: #2457d6;
  color: #f4f7ff;
}

.quietstar-step-button-next:hover:not(:disabled) {
  background: #173f9f;
  color: #f4f7ff;
}

.quietstar-figure figcaption {
  justify-content: space-between;
  padding-top: 6px;
  padding-bottom: 6px;
}

.visibility-layout {
  display: grid;
  gap: 14px;
}

.visibility-story {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(270px, 0.34fr);
  gap: 12px;
  align-items: stretch;
}

.visibility-lanes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.visibility-lane {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 7px 14px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-raised);
  padding: 11px 13px;
}

.visibility-lane > strong {
  color: var(--ink);
  font-size: 0.83rem;
}

.visibility-lane > p {
  grid-column: 1 / -1;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.72rem;
}

.lane-flow {
  display: flex;
  gap: 6px;
  align-items: center;
  justify-content: flex-end;
}

.lane-node {
  display: grid;
  min-height: 34px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--control-radius);
  background: var(--surface);
  padding: 5px 8px;
  color: var(--ink);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.67rem;
  font-weight: 760;
  text-align: center;
}

.lane-reasoning {
  border-color: var(--accent);
  background: var(--reasoning);
}

.lane-private {
  border-style: dashed;
  background: var(--private);
  color: var(--muted);
}

.faithfulness-note {
  display: grid;
  align-content: center;
  margin: 0;
  border-left-width: 3px;
  padding: 12px 15px;
  font-size: clamp(0.84rem, 1vw, 0.98rem);
}

.slide-pause {
  padding-top: clamp(20px, 2.4vw, 34px);
  padding-bottom: clamp(20px, 2.4vw, 34px);
}

.pause-slide-heading {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  margin-bottom: 12px;
}

.pause-slide-heading > div:first-child {
  display: grid;
  gap: 5px;
}

.pause-slide-heading h2 {
  font-size: clamp(2.15rem, 3.5vw, 3.75rem);
}

.pause-slide-heading > div:first-child p {
  margin: 0;
  font-size: clamp(0.92rem, 1.15vw, 1.06rem);
}

.pause-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.pause-explorer {
  width: min(100%, 1180px);
  margin-inline: auto;
  justify-self: center;
  background: #fbfcfe;
}

.pause-instruction {
  margin: 0;
  border-bottom: 1px solid #d6deea;
  background: #f3f6fb;
  padding: 6px 10px;
  color: #657083;
  font-size: 0.65rem;
  font-weight: 680;
}

.pause-diagram-scroll {
  display: flex;
  width: 100%;
  justify-content: flex-start;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  background: #ffffff;
}

.pause-semantic-diagram {
  display: block;
  flex: 0 0 auto;
  width: min(100%, 1120px);
  min-width: 880px;
  height: auto;
  margin-inline: auto;
  max-height: clamp(225px, 31vh, 315px);
  user-select: none;
  -webkit-user-select: none;
}

.pause-static-copy,
.pause-right-static {
  pointer-events: none;
}

.pause-row-label,
.pause-panel-caption,
.pause-target-row text,
.pause-input-row text,
.pause-ignore-label {
  fill: #101318;
}

.pause-row-label {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 25px;
  font-weight: 760;
}

.pause-panel-caption {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 26px;
}

.pause-target-row rect,
.pause-input-row rect,
.pause-hidden-row rect {
  fill: #ffffff;
  stroke: #090b0f;
  stroke-width: 4;
  vector-effect: non-scaling-stroke;
  transition:
    fill 170ms var(--ease),
    stroke 170ms var(--ease),
    stroke-width 170ms var(--ease),
    filter 170ms var(--ease);
}

.pause-target-row text,
.pause-input-row text {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 22px;
}

.pause-input-row .pause-accent-token,
.pause-accent-token rect {
  fill: #fff8ef;
  stroke: #c64800;
}

.pause-accent-token text,
.pause-ignore-label {
  fill: #c64800;
  font-weight: 760;
}

.pause-accent-token text {
  font-size: 18px;
}

.pause-ignore-label {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 20px;
}

.pause-standard-routes path,
.pause-compute-routes path,
.pause-target-link {
  fill: none;
  stroke: #090b0f;
  stroke-linecap: round;
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
  transition:
    stroke 170ms var(--ease),
    stroke-width 170ms var(--ease);
}

.pause-compute-routes .pause-extra-route {
  stroke: #c64800;
}

.pause-hidden-row .pause-extra-state {
  fill: #fff8ef;
  stroke: #c64800;
}

.pause-diagram-part {
  cursor: pointer;
  outline: none;
  transition: opacity 180ms var(--ease);
}

.pause-diagram-hit {
  fill: transparent;
  stroke: transparent;
  pointer-events: all;
}

.pause-semantic-diagram.has-active .pause-diagram-part:not(.is-active) {
  opacity: 0.15;
}

.pause-diagram-part:hover .pause-target-row rect,
.pause-diagram-part:hover .pause-input-row rect,
.pause-diagram-part:hover .pause-hidden-row rect,
.pause-diagram-part:focus-visible .pause-target-row rect,
.pause-diagram-part:focus-visible .pause-input-row rect,
.pause-diagram-part:focus-visible .pause-hidden-row rect,
.pause-diagram-part.is-active .pause-target-row rect,
.pause-diagram-part.is-active .pause-input-row rect,
.pause-diagram-part.is-active .pause-hidden-row rect {
  stroke: #2457d6;
  stroke-width: 5;
  filter: drop-shadow(0 4px 8px rgb(36 87 214 / 0.18));
}

.pause-diagram-part:hover .pause-standard-routes path,
.pause-diagram-part:hover .pause-compute-routes path,
.pause-diagram-part:focus-visible .pause-standard-routes path,
.pause-diagram-part:focus-visible .pause-compute-routes path,
.pause-diagram-part.is-active .pause-standard-routes path,
.pause-diagram-part.is-active .pause-compute-routes path {
  stroke: #2457d6;
  stroke-width: 3.2;
}

.pause-part-ignore:hover .pause-ignore-label,
.pause-part-ignore:focus-visible .pause-ignore-label,
.pause-part-ignore.is-active .pause-ignore-label {
  fill: #2457d6;
}

.pause-part-ignore:focus-visible .pause-diagram-hit,
.pause-part-ignore.is-active .pause-diagram-hit {
  stroke: #2457d6;
  stroke-width: 3;
}

.pause-diagram-part:focus-visible .pause-diagram-hit {
  stroke: #2457d6;
  stroke-width: 3;
  stroke-dasharray: 8 6;
}

.pause-inspector {
  display: grid;
  grid-template-columns: minmax(250px, 1.08fr) minmax(280px, 0.92fr) auto;
  gap: 16px;
  align-items: center;
  border-top: 1px solid #d6deea;
  background: #f8fafd;
  padding: 8px 11px;
}

.pause-inspector-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.pause-inspector-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.pause-inspector-eyebrow {
  margin: 0;
  color: #2457d6;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.56rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.pause-inspector-heading .selection-state {
  border: 1px solid #9eb6ee;
  border-radius: 999px;
  background: #e5edff;
  padding: 2px 6px;
  color: #173f9f;
  font-size: 0.54rem;
  font-weight: 780;
}

.pause-inspector h3 {
  margin: 0;
  color: #172033;
  font-size: clamp(0.88rem, 1.15vw, 1.05rem);
  font-weight: 400;
  line-height: 1;
}

.pause-inspector-summary {
  margin: 0;
  color: #59657a;
  font-size: 0.67rem;
  line-height: 1.3;
}

.pause-formula-card {
  display: grid;
  gap: 3px;
  min-width: 0;
  border-left: 2px solid #aab6c8;
  padding-left: 13px;
}

.pause-formula-card > span {
  color: #657083;
  font-size: 0.54rem;
  font-weight: 780;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pause-formula-card .math-formula {
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  color: #172033;
  font-size: clamp(1rem, 1.22vw, 1.18rem);
  line-height: 1.65;
  white-space: nowrap;
}

.pause-formula-card p {
  margin: 0;
  color: #657083;
  font-size: 0.59rem;
  line-height: 1.25;
}

.pause-step-controls {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 4px;
  justify-items: stretch;
}

.pause-step-controls[hidden] {
  display: none;
}

.pause-step-controls span {
  grid-column: 1 / -1;
  color: #657083;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.56rem;
  font-weight: 760;
  text-align: center;
}

.pause-step-button {
  min-height: 24px;
  border: 1px solid #aab6c8;
  border-radius: 7px;
  background: #f9fbfe;
  padding: 0 7px;
  color: #233049;
  cursor: pointer;
  font-size: 0.58rem;
  font-weight: 740;
  transition:
    background 160ms var(--ease),
    border-color 160ms var(--ease),
    transform 120ms var(--ease);
}

.pause-step-button:hover:not(:disabled) {
  border-color: #2457d6;
  background: #e5edff;
}

.pause-step-button:active:not(:disabled) {
  transform: translateY(1px) scale(0.985);
}

.pause-step-button:focus-visible {
  outline: 3px solid rgb(36 87 214 / 0.32);
  outline-offset: 1px;
}

.pause-step-button:disabled {
  cursor: not-allowed;
  opacity: 0.4;
}

.pause-figure figcaption {
  justify-content: space-between;
  padding-top: 6px;
  padding-bottom: 6px;
}

.slide-coconut {
  padding-top: clamp(24px, 2.8vw, 40px);
  padding-bottom: clamp(24px, 2.8vw, 40px);
}

.coconut-slide-heading {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  margin-bottom: 16px;
}

.coconut-slide-heading > div:first-child {
  display: grid;
  gap: 6px;
}

.coconut-slide-heading h2 {
  font-size: clamp(2.3rem, 3.8vw, 4.1rem);
}

.coconut-slide-heading > div:first-child p {
  margin: 0;
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
}

.coconut-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.coconut-explorer {
  display: grid;
  gap: 9px;
}

.coconut-figure-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--diagram-canvas);
}

.coconut-instruction {
  margin: 0;
  border-bottom: 1px solid var(--diagram-line);
  background: var(--diagram-panel);
  padding: 8px 12px;
  color: var(--diagram-muted);
  font-size: 0.72rem;
  font-weight: 680;
}

.coconut-diagram-scroll {
  display: flex;
  width: 100%;
  justify-content: center;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  background: var(--diagram-canvas);
}

.coconut-semantic-diagram {
  display: block;
  width: min(100%, 1100px);
  min-width: 980px;
  height: auto;
  user-select: none;
  -webkit-user-select: none;
}

.coconut-paper-panel {
  fill: var(--diagram-panel);
}

.coconut-paper-static-copy {
  pointer-events: none;
}

.coconut-paper-mode-title {
  fill: var(--diagram-text);
  font-size: 29px;
  font-weight: 520;
  letter-spacing: -0.035em;
}

.coconut-paper-continuous-word {
  fill: var(--diagram-continuous);
  font-weight: 460;
}

.coconut-paper-row-label,
.coconut-paper-row-note {
  fill: var(--diagram-muted);
  font-size: 23px;
  font-weight: 450;
}

.coconut-paper-row-note {
  font-size: 18px;
  font-style: italic;
}

.coconut-paper-row-guide {
  fill: none;
  stroke: var(--diagram-guide);
  stroke-dasharray: 4 5;
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.coconut-diagram-part {
  cursor: pointer;
  outline: none;
  transition: opacity 180ms var(--ease);
}

.coconut-semantic-diagram.has-active .coconut-diagram-part:not(.is-active) {
  opacity: 0.38;
}

.coconut-semantic-diagram.has-active .coconut-diagram-part-model:not(.is-active) {
  opacity: 0.9;
}

.coconut-diagram-hit {
  fill: transparent;
  stroke: transparent;
  pointer-events: all;
}

.coconut-paper-node,
.coconut-paper-model-block {
  stroke: transparent;
  stroke-width: 0;
  vector-effect: non-scaling-stroke;
  transition:
    fill 180ms var(--ease),
    stroke 180ms var(--ease),
    stroke-width 180ms var(--ease);
}

.coconut-paper-embedding {
  fill: var(--diagram-embedding);
}

.coconut-paper-hidden {
  fill: var(--diagram-hidden);
}

.coconut-paper-latent {
  fill: url("#coconut-latent-node-gradient");
}

.coconut-paper-model-block {
  fill: var(--diagram-model);
}

.coconut-diagram-part:hover .coconut-paper-embedding,
.coconut-diagram-part:focus-visible .coconut-paper-embedding,
.coconut-diagram-part.is-active .coconut-paper-embedding {
  fill: var(--diagram-embedding-active);
}

.coconut-diagram-part:hover .coconut-paper-hidden,
.coconut-diagram-part:focus-visible .coconut-paper-hidden,
.coconut-diagram-part.is-active .coconut-paper-hidden {
  fill: var(--diagram-hidden-active);
}

.coconut-diagram-part:hover .coconut-paper-node,
.coconut-diagram-part:focus-visible .coconut-paper-node,
.coconut-diagram-part.is-active .coconut-paper-node,
.coconut-diagram-part:hover .coconut-paper-model-block,
.coconut-diagram-part:focus-visible .coconut-paper-model-block,
.coconut-diagram-part.is-active .coconut-paper-model-block {
  stroke: var(--diagram-focus);
  stroke-width: 2.2;
}

.coconut-diagram-part.is-pinned .coconut-paper-node,
.coconut-diagram-part.is-pinned .coconut-paper-model-block {
  stroke-width: 3;
}

.coconut-diagram-part:hover .coconut-paper-model-block,
.coconut-diagram-part:focus-visible .coconut-paper-model-block,
.coconut-diagram-part.is-active .coconut-paper-model-block {
  fill: var(--diagram-model-active);
}

.coconut-paper-model-label {
  fill: #f8f9fb;
  font-size: 32px;
  font-weight: 450;
  letter-spacing: -0.02em;
  pointer-events: none;
}

.coconut-paper-token,
.coconut-paper-output-token,
.coconut-paper-ellipsis,
.coconut-paper-latent-note {
  fill: var(--diagram-text);
  pointer-events: none;
}

.coconut-paper-token,
.coconut-paper-output-token {
  font-size: 24px;
  font-weight: 430;
}

.coconut-paper-output-token {
  font-size: 25px;
}

.coconut-paper-math-token {
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
}

.coconut-paper-ellipsis {
  font-size: 22px;
  letter-spacing: 0.08em;
}

.coconut-paper-latent-note {
  fill: var(--diagram-muted);
  font-size: 24px;
  font-weight: 430;
}

.coconut-paper-path {
  fill: none;
  stroke: var(--diagram-path);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
  vector-effect: non-scaling-stroke;
  pointer-events: none;
  transition: stroke 180ms var(--ease);
}

.coconut-diagram-part:hover .coconut-paper-path,
.coconut-diagram-part:focus-visible .coconut-paper-path,
.coconut-diagram-part.is-active .coconut-paper-path {
  stroke: var(--diagram-path-active);
}

.coconut-paper-arrow-head {
  fill: var(--diagram-path);
  fill: context-stroke;
}

.coconut-figure-caption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 16px;
  border-top: 1px solid var(--diagram-line);
  background: var(--diagram-panel);
  padding: 7px 12px 8px;
  color: var(--diagram-muted);
  font-size: 0.68rem;
  line-height: 1.35;
}

.coconut-figure-caption a {
  color: #173f9f;
  font-weight: 790;
  text-underline-offset: 2px;
}

.coconut-part-rail {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--control-radius);
  background: var(--surface-raised);
}

.coconut-part-rail button,
.coconut-text-button {
  border: 0;
  color: var(--ink);
  cursor: pointer;
  font-weight: 730;
}

.coconut-part-rail button {
  display: flex;
  min-width: 0;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border-right: 1px solid var(--line);
  background: transparent;
  padding: 7px 8px;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.15;
  transition:
    background 180ms var(--ease),
    color 180ms var(--ease),
    transform 130ms var(--ease);
}

.coconut-part-rail button:last-child {
  border-right: 0;
}

.coconut-part-rail button:hover,
.coconut-part-rail button.is-active {
  background: var(--accent-soft);
  color: var(--ink);
}

.coconut-part-rail button:nth-child(n + 5):hover,
.coconut-part-rail button:nth-child(n + 5).is-active {
  background: var(--latent-soft);
}

.coconut-part-rail button:active,
.coconut-text-button:active:not(:disabled) {
  transform: translateY(1px) scale(0.985);
}

.coconut-part-rail button:focus-visible,
.coconut-text-button:focus-visible {
  position: relative;
  z-index: 1;
  outline: 3px solid color-mix(in srgb, var(--accent) 48%, transparent);
  outline-offset: -3px;
}

.coconut-part-key {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.coconut-part-key-latent {
  background: var(--latent);
}

.coconut-inspector {
  display: grid;
  grid-template-columns: minmax(360px, 1.25fr) minmax(410px, 0.95fr);
  gap: clamp(20px, 3vw, 46px);
  align-items: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-raised);
  padding: 14px 17px;
}

.coconut-inspector-copy {
  display: grid;
  gap: 5px;
}

.coconut-inspector-heading-row {
  display: flex;
  min-height: 20px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.coconut-inspector-eyebrow {
  margin: 0;
  color: var(--accent-strong);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.065em;
  text-transform: uppercase;
}

.coconut-selection-state {
  border: 1px solid color-mix(in srgb, var(--accent) 50%, var(--line));
  border-radius: 999px;
  background: var(--accent-soft);
  padding: 3px 7px;
  color: var(--accent-strong);
  font-size: 0.62rem;
  font-weight: 780;
}

.coconut-inspector h3 {
  margin: 0;
  font-size: clamp(1.08rem, 1.5vw, 1.35rem);
  font-weight: 400;
  letter-spacing: 0.008em;
  line-height: 1;
}

.coconut-inspector-summary,
.coconut-inspector-detail {
  margin: 0;
  line-height: 1.34;
}

.coconut-inspector-summary {
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 650;
}

.coconut-inspector-detail {
  color: var(--muted);
  font-size: 0.75rem;
}

.coconut-fact-list {
  display: grid;
  margin: 0;
}

.coconut-fact-list > div {
  display: grid;
  grid-template-columns: minmax(105px, 0.42fr) minmax(150px, 1fr);
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding: 6px 0;
}

.coconut-fact-list > div:first-child {
  padding-top: 0;
}

.coconut-fact-list > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.coconut-fact-list dt {
  color: var(--subtle);
  font-size: 0.64rem;
  font-weight: 770;
}

.coconut-fact-list dd {
  margin: 0;
  color: var(--ink);
  font-size: 0.72rem;
  font-weight: 670;
  line-height: 1.3;
}

.coconut-walkthrough-controls {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-top: 1px solid var(--line);
  padding-top: 9px;
}

.coconut-walkthrough-controls[hidden] {
  display: none;
}

.coconut-walkthrough-controls p {
  margin: 0;
  color: var(--subtle);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.65rem;
  font-weight: 760;
}

.coconut-walkthrough-controls > div {
  display: flex;
  gap: 7px;
}

.coconut-text-button {
  min-height: 31px;
  border-radius: 8px;
  background: var(--surface-strong);
  padding: 0 10px;
  font-size: 0.72rem;
  transition:
    transform 130ms var(--ease),
    background 180ms var(--ease);
}

.coconut-text-button:hover:not(:disabled) {
  background: var(--accent-soft);
}

.coconut-text-button-next {
  background: var(--accent);
  color: #f4f7ff;
}

.coconut-text-button-next:hover:not(:disabled) {
  background: var(--accent-strong);
}

.coconut-text-button:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}

.coconut-distinction {
  border-left-color: var(--latent);
  padding-top: 2px;
  padding-bottom: 2px;
}

.compute-story {
  display: grid;
  grid-template-columns: minmax(120px, 0.75fr) auto minmax(150px, 0.9fr) auto minmax(150px, 0.9fr) auto minmax(170px, 1.05fr) auto minmax(170px, 1.05fr);
  gap: 8px;
  align-items: center;
  margin-bottom: 26px;
}

.compute-story > span:nth-child(odd) {
  display: grid;
  min-height: 70px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-raised);
  padding: 12px;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 740;
  line-height: 1.25;
  text-align: center;
}

.compute-story > span:nth-child(7),
.compute-story > span:nth-child(9) {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: var(--accent-soft);
}

.compute-story > span:nth-child(even) {
  color: var(--accent);
  font-size: 1.3rem;
  font-weight: 800;
}

.summary-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.summary-table {
  width: 100%;
  min-width: 880px;
  border-collapse: collapse;
  background: var(--surface-raised);
  font-size: clamp(0.78rem, 0.9vw, 0.91rem);
}

.summary-table th,
.summary-table td {
  border-bottom: 1px solid var(--line);
  padding: 12px 13px;
  color: var(--muted);
  line-height: 1.28;
  text-align: left;
  vertical-align: top;
}

.summary-table thead th {
  background: var(--surface-strong);
  color: var(--ink);
  font-size: 0.75rem;
  font-weight: 800;
}

.summary-table tbody th {
  color: var(--ink);
  font-weight: 760;
}

.summary-table tbody tr:last-child th,
.summary-table tbody tr:last-child td {
  border-bottom: 0;
}

.summary-table tbody tr:hover {
  background: var(--accent-soft);
}

.closing-statement {
  max-width: 1000px;
  margin: 28px 0 0;
  color: var(--ink);
  font-size: clamp(1.22rem, 2vw, 1.8rem);
  font-weight: 700;
  line-height: 1.32;
}

.slide-references {
  position: relative;
}

.references-heading {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.references-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 42px);
}

.reference-list {
  display: grid;
  gap: clamp(10px, 1.4vw, 16px);
  margin: 0;
  padding-left: 2.1rem;
}

.reference-list li {
  padding-left: 0.4rem;
  color: var(--subtle);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(0.73rem, 0.92vw, 0.9rem);
  font-variant-numeric: tabular-nums;
  line-height: 1.38;
}

.reference-list a {
  color: var(--ink);
  font-family:
    "Avenir Next",
    "Helvetica Neue",
    ui-sans-serif,
    system-ui,
    sans-serif;
  font-size: clamp(0.86rem, 1.05vw, 1.02rem);
  text-decoration-color: color-mix(in srgb, var(--accent) 38%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.reference-list a:hover {
  color: var(--accent-strong);
  text-decoration-color: currentColor;
}

.reference-list cite {
  font-style: italic;
}

.references-note {
  margin: clamp(24px, 3.4vw, 42px) 0 0;
  border-left: 4px solid var(--accent);
  padding-left: 16px;
  font-size: clamp(0.82rem, 1vw, 0.98rem);
}

.speaker-notes {
  display: none;
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
  padding: 15px 17px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.48;
}

.speaker-notes strong {
  color: var(--ink);
}

.show-notes .speaker-notes {
  display: block;
}

.deck-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: center;
  min-height: 36px;
  margin-top: 8px;
}

.slide-dots {
  grid-column: 2;
  display: flex;
  justify-content: center;
  gap: 7px;
}

.dot-button {
  width: 20px;
  height: 20px;
  padding: 0;
  border-radius: 999px;
  color: transparent;
}

.dot-button.is-active {
  border-color: var(--accent);
  background: var(--accent);
}

.keyboard-hint {
  grid-column: 3;
  justify-self: end;
  margin: 0;
  color: var(--subtle);
  font-size: 0.72rem;
  white-space: nowrap;
}

@media (min-width: 861px) and (max-height: 950px) {
  .slide {
    padding: clamp(28px, 3vw, 42px);
  }

  h2 {
    font-size: clamp(2.3rem, 3.8vw, 4.1rem);
  }

  .slide-heading {
    gap: 10px;
    margin-bottom: 24px;
  }

  .reasoning-intro-layout {
    min-height: calc(100dvh - 236px);
    gap: 32px 50px;
  }

  .reasoning-intro-copy h2 {
    font-size: clamp(3.4rem, 5.7vw, 5.8rem);
  }

  .reasoning-intro-thesis {
    margin-top: 30px;
  }

  .reasoning-flip-card {
    min-height: 170px;
  }

  .direct-story,
  .workspace-explanation,
  .visibility-story {
    gap: 22px;
  }

  .flow-node {
    min-height: 80px;
  }

  .flow-model {
    min-height: 108px;
  }

  .transformer-figure img {
    max-height: 400px;
  }

  .transformer-slide-heading {
    margin-bottom: 12px;
  }

  .transformer-semantic-diagram {
    width: min(100%, 940px);
    min-width: 0;
  }

  .transformer-inspector {
    padding: 10px 14px;
  }

  .training-layout {
    gap: 22px;
  }

  .comparison-band article {
    padding: 18px 22px;
  }

  .quietstar-figure img {
    max-height: 300px;
  }

  .quietstar-semantic-diagram {
    max-height: 250px;
  }

  .quietstar-inspector {
    padding-top: 6px;
    padding-bottom: 6px;
  }

  .visibility-story {
    gap: 12px;
  }

  .pause-slide-heading {
    margin-bottom: 10px;
  }

  .pause-semantic-diagram {
    width: min(100%, 1080px);
    min-width: 0;
    max-height: 285px;
  }

  .coconut-slide-heading {
    margin-bottom: 16px;
  }

  .coconut-semantic-diagram {
    width: min(100%, 1040px);
    min-width: 0;
  }

  .coconut-inspector {
    padding: 12px 14px;
  }
}

@media (min-width: 1181px) and (max-height: 950px) {
  .token-workspace {
    flex-wrap: nowrap;
    gap: 5px;
  }

  .token {
    padding: 9px 10px;
    font-size: 0.75rem;
  }

  .token-arrow {
    font-size: 1.2rem;
  }
}

@media (min-width: 861px) and (max-height: 780px) {
  .deck-shell {
    padding-top: 8px;
  }

  .topbar {
    min-height: 50px;
  }

  .slide {
    min-height: calc(100dvh - 132px);
    padding: 24px 34px;
  }

  h2 {
    font-size: clamp(2.15rem, 3.25vw, 3.3rem);
  }

  .slide-heading {
    gap: 7px;
    margin-bottom: 16px;
  }

  .slide-heading p {
    font-size: 1rem;
  }

  .reasoning-intro-layout {
    min-height: calc(100dvh - 205px);
    gap: 20px 38px;
  }

  .reasoning-intro-copy h2 {
    font-size: clamp(3.1rem, 5vw, 4.8rem);
  }

  .reasoning-intro-subtitle {
    margin-top: 15px;
    font-size: 1.28rem;
  }

  .reasoning-intro-thesis {
    margin-top: 20px;
    font-size: 0.96rem;
  }

  .reasoning-example-grid {
    gap: 10px;
  }

  .reasoning-flip-card {
    min-height: 132px;
  }

  .reasoning-flip-card-face {
    padding: 14px;
    font-size: 0.88rem;
    line-height: 1.3;
  }

  .direct-story,
  .workspace-explanation,
  .visibility-story {
    gap: 14px;
  }

  .flow-node {
    min-height: 64px;
  }

  .flow-model {
    min-height: 82px;
  }

  .key-statement {
    font-size: 1.22rem;
  }

  .transformer-figure img {
    max-height: 280px;
  }

  .slide-transformer {
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .transformer-slide-heading {
    margin-bottom: 8px;
  }

  .transformer-slide-heading > div:first-child {
    gap: 4px;
  }

  .transformer-explorer {
    gap: 5px;
  }

  .transformer-instruction,
  .transformer-figure-caption {
    padding-top: 4px;
    padding-bottom: 4px;
  }

  .transformer-semantic-diagram {
    width: min(100%, 760px);
  }

  .transformer-part-rail button {
    min-height: 32px;
    padding: 4px 6px;
    font-size: 0.62rem;
  }

  .transformer-inspector {
    gap: 16px;
    padding: 7px 10px;
  }

  .transformer-inspector-copy {
    gap: 2px;
  }

  .transformer-inspector h3 {
    font-size: 0.98rem;
  }

  .transformer-inspector-summary {
    font-size: 0.72rem;
  }

  .transformer-inspector-detail,
  .transformer-formula-card p {
    display: none;
  }

  .transformer-distinction {
    font-size: 0.94rem;
  }

  .switchable-figure {
    min-height: 0;
  }

  .switchable-figure img {
    height: 245px;
  }

  .fact-stack {
    gap: 9px;
  }

  .fact-stack p,
  .precision-note {
    font-size: 0.82rem;
  }

  .training-layout {
    gap: 14px;
  }

  .comparison-band article {
    padding: 12px 18px;
  }

  .comparison-band p {
    margin-bottom: 6px;
  }

  .training-thesis {
    gap: 8px;
  }

  .training-thesis > p {
    font-size: 1rem;
  }

  .quietstar-figure img {
    max-height: 220px;
  }

  .quietstar-semantic-diagram {
    max-height: 170px;
  }

  .quietstar-toolbar {
    min-height: 27px;
    padding-top: 3px;
    padding-bottom: 3px;
  }

  .quietstar-inspector {
    gap: 10px;
    padding: 5px 8px;
  }

  .quietstar-inspector-summary,
  .quietstar-formula p {
    display: none;
  }

  .quietstar-figure figcaption {
    padding-top: 4px;
    padding-bottom: 4px;
  }

  .visibility-lane {
    padding: 10px 13px;
  }

  .slide-pause {
    padding-top: 17px;
    padding-bottom: 17px;
  }

  .pause-slide-heading {
    margin-bottom: 7px;
  }

  .pause-slide-heading > div:first-child {
    gap: 3px;
  }

  .visibility-layout {
    gap: 8px;
  }

  .visibility-story {
    gap: 8px;
  }

  .pause-semantic-diagram {
    width: min(100%, 900px);
    min-width: 0;
    max-height: 210px;
  }

  .pause-instruction,
  .pause-figure figcaption {
    padding-top: 4px;
    padding-bottom: 4px;
  }

  .pause-inspector {
    gap: 10px;
    padding: 5px 8px;
  }

  .pause-inspector-summary,
  .pause-formula-card p {
    display: none;
  }

  .slide-coconut {
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .coconut-slide-heading {
    margin-bottom: 10px;
  }

  .coconut-slide-heading > div:first-child {
    gap: 5px;
  }

  .coconut-explorer {
    gap: 6px;
  }

  .coconut-instruction,
  .coconut-figure-caption {
    padding-top: 5px;
    padding-bottom: 5px;
  }

  .coconut-semantic-diagram {
    width: min(100%, 880px);
  }

  .coconut-part-rail button {
    min-height: 34px;
    padding: 5px 6px;
    font-size: 0.64rem;
  }

  .coconut-inspector {
    gap: 18px;
    padding: 8px 11px;
  }

  .coconut-inspector-copy {
    gap: 3px;
  }

  .coconut-inspector h3 {
    font-size: 1rem;
  }

  .coconut-inspector-summary {
    font-size: 0.75rem;
  }

  .coconut-inspector-detail {
    display: none;
  }

  .coconut-fact-list > div {
    padding: 3px 0;
  }

  .coconut-distinction {
    font-size: 1rem;
  }

  .compute-story {
    margin-bottom: 14px;
  }

  .compute-story > span:nth-child(odd) {
    min-height: 54px;
  }

  .summary-table th,
  .summary-table td {
    padding: 8px 10px;
  }

  .closing-statement {
    margin-top: 16px;
    font-size: 1.25rem;
  }
}

@media (max-width: 1180px) {
  .topbar {
    grid-template-columns: 1fr;
    gap: 8px;
    padding-bottom: 8px;
  }

  .topbar-actions {
    justify-content: flex-start;
  }

  .slide {
    min-height: calc(100dvh - 198px);
  }

  .reasoning-intro-layout,
  .direct-layout,
  .workspace-layout,
  .training-evidence {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 28px;
  }

  .reasoning-intro-layout {
    grid-template-columns: minmax(270px, 0.8fr) minmax(390px, 1.2fr);
  }

  .workspace-layout {
    grid-template-columns: minmax(280px, 0.65fr) minmax(460px, 1.35fr);
  }

  .training-evidence {
    grid-template-columns: minmax(270px, 0.72fr) minmax(480px, 1.28fr);
  }

  .visibility-story {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 0.34fr);
  }

  .compute-story {
    grid-template-columns: repeat(5, minmax(120px, 1fr));
  }

  .compute-story > span:nth-child(even) {
    display: none;
  }
}

@media (max-width: 860px) {
  .deck-shell {
    width: min(100% - 20px, 1480px);
  }

  .brand-block {
    align-items: center;
  }

  .topbar-actions {
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .slide {
    min-height: auto;
    overflow: visible;
    padding: 24px;
  }

  h2 {
    font-size: clamp(2.25rem, 9vw, 4.4rem);
  }

  .title-slide-layout {
    min-height: 66dvh;
  }

  .title-slide-layout h2 {
    font-size: clamp(3.35rem, 13vw, 6.5rem);
  }

  .reasoning-intro-layout,
  .direct-layout,
  .workspace-layout,
  .training-evidence {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .reasoning-intro-layout {
    gap: 34px;
  }

  .reasoning-intro-copy h2,
  .reasoning-intro-subtitle {
    max-width: none;
  }

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

  .coconut-slide-heading {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .transformer-slide-heading {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .transformer-actions {
    width: 100%;
  }

  .transformer-actions .control-button {
    flex: 1;
  }

  .transformer-semantic-diagram {
    min-width: 860px;
  }

  .transformer-part-rail {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }

  .transformer-part-rail button {
    flex: 0 0 142px;
    scroll-snap-align: start;
  }

  .transformer-inspector {
    grid-template-columns: 1fr;
  }

  .transformer-formula-card {
    border-top: 1px solid var(--line);
    border-left: 0;
    padding-top: 10px;
    padding-left: 0;
  }

  .transformer-walkthrough-controls {
    grid-column: 1;
  }

  .quietstar-semantic-diagram {
    min-width: 720px;
    max-height: none;
  }

  .quietstar-inspector {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .quietstar-step-controls {
    grid-column: 1 / -1;
    grid-template-columns: 1fr auto auto;
    align-items: center;
  }

  .quietstar-step-controls span {
    grid-column: auto;
    text-align: left;
  }

  .pause-slide-heading {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .pause-actions {
    width: 100%;
  }

  .pause-actions .control-button {
    flex: 1;
  }

  .visibility-story {
    grid-template-columns: 1fr;
  }

  .pause-semantic-diagram {
    min-width: 820px;
    max-height: none;
  }

  .pause-inspector {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .pause-step-controls {
    grid-column: 1 / -1;
    grid-template-columns: 1fr auto auto;
    align-items: center;
  }

  .pause-step-controls span {
    grid-column: auto;
    text-align: left;
  }

  .coconut-actions {
    width: 100%;
  }

  .coconut-actions .control-button {
    flex: 1;
  }

  .coconut-semantic-diagram {
    min-width: 900px;
  }

  .coconut-part-rail {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }

  .coconut-part-rail button {
    flex: 0 0 142px;
    scroll-snap-align: start;
  }

  .coconut-inspector {
    grid-template-columns: 1fr;
  }

  .coconut-walkthrough-controls {
    grid-column: 1;
  }

  .transformer-figure {
    width: min(100%, 440px);
  }

  .comparison-band {
    grid-template-columns: 1fr;
  }

  .comparison-band article + article {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .visibility-lane {
    grid-template-columns: 1fr;
  }

  .visibility-lane > p {
    grid-column: 1;
  }

  .visibility-lane .lane-flow {
    justify-content: flex-start;
  }

  .compute-story {
    grid-template-columns: 1fr;
  }

  .compute-story > span:nth-child(even) {
    display: block;
    justify-self: center;
    transform: rotate(90deg);
  }

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

  .deck-nav {
    grid-template-columns: 1fr;
  }

  .slide-dots,
  .keyboard-hint {
    grid-column: 1;
    justify-self: center;
  }

  .keyboard-hint {
    white-space: normal;
    text-align: center;
  }
}

@media (max-width: 560px) {
  .deck-shell {
    width: min(100% - 14px, 1480px);
    padding-top: 8px;
  }

  .course-mark {
    display: none;
  }

  .topbar-actions {
    gap: 6px;
  }

  .control-button {
    min-height: 36px;
    padding: 0 10px;
    font-size: 0.78rem;
  }

  .slide-counter {
    min-width: 52px;
    padding: 8px;
  }

  .slide {
    border-radius: 14px;
    padding: 20px;
  }

  .title-slide-layout {
    min-height: 70dvh;
  }

  .title-slide-layout h2 {
    font-size: clamp(3rem, 15vw, 4.8rem);
  }

  .title-slide-path {
    display: grid;
    grid-template-columns: 1fr;
  }

  .title-slide-path span:nth-child(even) {
    transform: rotate(90deg);
  }

  .reasoning-intro-copy h2 {
    font-size: clamp(3.1rem, 15vw, 4.7rem);
  }

  .reasoning-intro-subtitle {
    font-size: 1.24rem;
  }

  .reasoning-intro-thesis {
    margin-top: 26px;
  }

  .reasoning-example-grid {
    grid-template-columns: 1fr;
  }

  .reasoning-flip-card {
    min-height: 140px;
  }

  .reasoning-flip-card-face {
    padding: 18px;
    font-size: 0.96rem;
  }

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

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

  .figure-switcher-controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .figure-tab {
    padding: 8px;
  }

  .switchable-figure {
    min-height: 260px;
  }

  .switchable-figure img {
    height: 260px;
  }

  .quietstar-toolbar {
    align-items: flex-start;
  }

  .quietstar-toolbar p {
    max-width: 22ch;
  }

  .quietstar-semantic-diagram {
    min-width: 680px;
  }

  .quietstar-inspector {
    grid-template-columns: 1fr;
  }

  .quietstar-formula {
    border-top: 1px solid #d6deea;
    border-left: 0;
    padding-top: 7px;
    padding-left: 0;
  }

  .quietstar-step-controls {
    grid-column: 1;
  }

  .quietstar-figure figcaption span {
    display: none;
  }

  .visibility-lanes {
    grid-template-columns: 1fr;
  }

  .lane-flow {
    flex-wrap: wrap;
  }

  .pause-semantic-diagram {
    min-width: 760px;
  }

  .pause-inspector {
    grid-template-columns: 1fr;
  }

  .pause-formula-card {
    border-top: 1px solid #d6deea;
    border-left: 0;
    padding-top: 7px;
    padding-left: 0;
  }

  .pause-step-controls {
    grid-column: 1;
  }

  .pause-figure figcaption span {
    display: none;
  }

  .coconut-fact-list > div {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .transformer-figure-caption span {
    display: none;
  }

  .transformer-semantic-diagram {
    min-width: 820px;
  }

  .coconut-figure-caption span {
    display: none;
  }

  .coconut-semantic-diagram {
    min-width: 860px;
  }
}

@media (prefers-color-scheme: dark) {
  .control-button-primary,
  .control-button[aria-pressed="true"],
  .figure-tab.is-active,
  .transformer-text-button-next,
  .coconut-text-button-next {
    color: #111a2a;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .flow-arrow,
  .compute-story > span:nth-child(even) {
    transform: none;
  }
}