:root {
  color-scheme: light;
  --paper: #ffffff;
  --panel: #f8f9fa;
  --ink: #111111;
  --muted: #60656c;
  --line: #d8dadd;
  --link: #0645ad;
  --blue: #8ea4c0;
  --green: #3f7b58;
  --red: #c83a2d;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --text-size: 1rem;
  --subheading-size: 1.25rem;
  --heading-size: 1.75rem;
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: var(--text-size);
  line-height: 1.55;
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.17em;
}

.glossary-link {
  color: inherit;
  text-decoration-style: dotted;
}

.glossary-link:hover {
  color: var(--link);
}

img {
  display: block;
  max-width: 100%;
}

code {
  font-family: var(--mono);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 10;
  transform: translateY(-200%);
  background: var(--ink);
  color: var(--paper);
  padding: 0.45rem 0.65rem;
}

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

.page-shell {
  display: grid;
  grid-template-columns: minmax(15rem, 19rem) minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow: auto;
  border-right: 1px solid var(--line);
  background: var(--panel);
  padding: var(--space-3);
}

.brand-block {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: var(--space-2);
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-3);
}

.brand-block img {
  width: 2.35rem;
  height: 2.35rem;
}

.brand-name,
.brand-kicker {
  margin: 0;
}

.brand-name {
  font-weight: 700;
}

.brand-kicker {
  color: var(--muted);
}

.view-switch {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-1);
}

.view-switch a {
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 0.35rem 0.5rem;
  text-align: center;
  text-decoration: none;
}

.view-switch a:hover,
.view-switch a[aria-current="page"] {
  border-color: var(--ink);
  background: #ffffff;
}

.nav-list {
  display: grid;
  gap: var(--space-3);
}

.nav-stage {
  display: grid;
  gap: 0.25rem;
}

.nav-stage-title {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
}

.nav-stage-links {
  display: grid;
  gap: 0.125rem;
}

.nav-list a {
  display: block;
  color: var(--ink);
  padding: 0.375rem 0.25rem;
  border-left: 2px solid transparent;
  text-decoration: none;
}

.nav-list a:hover,
.nav-list a[aria-current="true"] {
  background: #ffffff;
  border-left-color: var(--ink);
}

.nav-list strong {
  font-weight: 500;
  line-height: 1.25;
}

.document {
  width: min(100%, 76rem);
  padding: var(--space-6) 4rem 5rem;
}

.document-header {
  max-width: 58rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-6);
}

.is-slides-view .document {
  width: min(100%, 88rem);
}

.is-slides-view .document-header {
  max-width: 72rem;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--sans);
  line-height: 1.1;
  letter-spacing: 0;
}

h1,
h2 {
  font-size: var(--heading-size);
  font-weight: 700;
}

h3,
h4 {
  font-size: var(--subheading-size);
  font-weight: 700;
  line-height: 1.18;
}

.section-list {
  display: grid;
  gap: var(--space-5);
}

.is-slides-view .section-list {
  gap: var(--space-6);
}

.stage-break {
  max-width: 58rem;
  border-top: 2px solid var(--ink);
  padding-top: var(--space-3);
}

.stage-break:not(:first-child) {
  margin-top: var(--space-5);
}

.stage-break h2 {
  margin-bottom: var(--space-2);
  font-weight: 700;
}

.stage-break p {
  max-width: 46rem;
  margin: 0;
  color: var(--muted);
}

.curriculum-section {
  scroll-margin-top: 2rem;
}

.section-body {
  max-width: 58rem;
  border-top: 1px solid var(--line);
  padding-top: var(--space-3);
}

.curriculum-section.is-exercise .section-body {
  border-top-color: var(--ink);
}

.section-header {
  margin-bottom: var(--space-3);
}

.slide-section {
  scroll-margin-top: 2rem;
}

.slide-frame {
  display: grid;
  gap: var(--space-4);
  max-width: 72rem;
  min-height: min(44rem, calc(100vh - 6rem));
  align-content: center;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line);
  padding: var(--space-5) 0;
}

.slide-header {
  display: grid;
  gap: var(--space-2);
}

.slide-header p,
.slide-note {
  margin: 0;
  color: var(--muted);
}

.slide-header h2 {
  max-width: 15ch;
}

.slide-image {
  width: 12rem;
  height: auto;
  flex-shrink: 0;
}

.slide-image.screenshot {
  width: 28rem;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.375rem;
  object-fit: cover;
  object-position: top;
}

.slide-body {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.slide-body .slide-points {
  margin: 0;
}

.slide-aside {
  flex-shrink: 0;
  width: 16rem;
  border-left: 2px solid var(--line);
  padding: 0 0 0 var(--space-4);
}

.slide-aside-label {
  margin: 0 0 var(--space-1) 0;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
}

.slide-aside-items {
  display: grid;
  gap: var(--space-1);
  margin: 0;
  padding-left: 1rem;
}

.slide-aside-items li {
  padding-left: 0.2rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.slide-points {
  display: grid;
  gap: var(--space-2);
  max-width: 46rem;
  margin: 0;
  padding-left: 1.35rem;
}

.slide-points li {
  padding-left: 0.2rem;
}

.slide-blocks {
  display: grid;
  gap: var(--space-3);
  max-width: 64rem;
}

.slide-blocks .content-block {
  max-width: 64rem;
}

.slide-blocks .dot-grid {
  width: min(100%, 42rem);
}

.slide-blocks .tower {
  width: min(100%, 42rem);
}

.slide-blocks .steps-block ol {
  column-count: 2;
  column-gap: var(--space-5);
}

.slide-blocks .steps-block li {
  break-inside: avoid;
  margin-bottom: var(--space-1);
}

.slide-note {
  max-width: 38rem;
  border-top: 1px solid var(--line);
  padding-top: var(--space-2);
}

.section-title-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.section-label {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  padding: 0.125rem 0.45rem;
  font-weight: 700;
  line-height: 1.2;
}

.section-intro {
  max-width: 46rem;
  margin: var(--space-2) 0 0;
  color: var(--muted);
}

.curriculum-section.is-exercise .callout-block {
  border-color: var(--ink);
}

.block-stack {
  display: grid;
  gap: var(--space-2);
}

.content-block {
  max-width: 54rem;
}

.content-block > h3 {
  margin-bottom: var(--space-2);
}

.copy-block p {
  max-width: 46rem;
  margin: 0;
}

.copy-block p + p {
  margin-top: var(--space-2);
}

.callout-block {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: var(--space-2) var(--space-3);
}

.callout-block p {
  margin: 0;
  max-width: 46rem;
}

.columns-block {
  border-top: 2px solid var(--ink);
  padding-top: var(--space-3);
}

.column-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

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

.column-grid section {
  min-width: 0;
}

.column-grid h4 {
  margin-bottom: var(--space-1);
}

.column-grid ul,
.link-list-block ul,
.checklist-block ul {
  margin: 0;
  padding-left: 1.15rem;
}

.column-grid li,
.room-block p,
.surface-map-block p,
.tower p,
.term-list-block dd,
.levels-block p,
.dot-chart-block p {
  color: var(--muted);
}

.column-grid li + li,
.checklist-block li + li,
.steps-block li + li {
  margin-top: var(--space-1);
}

.block-footnote {
  margin: var(--space-3) 0 0;
  color: var(--muted);
}

.dot-chart-block,
.prediction-viz-block,
.agent-flow-block,
.completion-block,
.transcript-block,
.room-block section,
.surface-map-block,
.problem-block,
.term-list-block,
.steps-block,
.checklist-block {
  border: 1px solid var(--line);
  background: #ffffff;
  padding: var(--space-3);
}

.cron-prompt-block {
  border: 1px solid var(--line);
  background: #ffffff;
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  max-width: 46rem;
}

.cron-clock {
  font-size: 2rem;
  line-height: 1;
}

.cron-label {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
}

.cron-example {
  margin: 0;
  color: var(--muted);
  font-style: italic;
}

.dot-chart-block p {
  margin: 0 0 var(--space-3);
}

.dot-chart {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: end;
}

.dot-grid {
  display: grid;
  grid-template-columns: repeat(50, minmax(0, 1fr));
  gap: 2px;
  width: min(100%, 35rem);
}

.dot {
  display: inline-block;
  aspect-ratio: 1;
  width: 100%;
  min-width: 2px;
  border-radius: 50%;
  background: #dddcd5;
}

.dot.is-chat {
  background: var(--blue);
}

.dot.is-paid {
  background: var(--green);
}

.dot.is-scaffold {
  background: var(--red);
}

.chart-total {
  writing-mode: vertical-rl;
  color: var(--muted);
}

.chart-legend {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-2);
  margin: var(--space-3) 0 0;
}

.chart-legend div {
  min-width: 0;
}

.chart-legend dt {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  font-weight: 700;
}

.chart-legend dt .dot {
  width: 0.62rem;
  flex: 0 0 auto;
}

.chart-legend dd {
  margin: 0.125rem 0 0 var(--space-3);
  color: var(--muted);
}

.levels-block {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
}

.levels-block section {
  position: relative;
  display: grid;
  align-content: start;
  gap: var(--space-1);
  min-height: 10rem;
  border: 1px solid var(--line);
  background: #ffffff;
  padding: var(--space-3);
  overflow: visible;
}

.levels-block span {
  color: var(--muted);
}

.levels-block strong {
  position: absolute;
  top: -0.8rem;
  right: -0.65rem;
  align-self: auto;
  width: fit-content;
  border: 2px solid var(--ink);
  background: var(--paper);
  box-shadow: 0.2rem 0.2rem 0 var(--ink);
  padding: 0.28rem 0.55rem;
  font-weight: 700;
  transform: rotate(5deg);
}

.prediction-viz-block {
  display: grid;
  gap: var(--space-3);
}

.prediction-phrase {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35em;
  align-items: baseline;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: var(--space-3);
  font-family: var(--sans);
  font-size: var(--heading-size);
  font-weight: 700;
  line-height: 1.12;
}

.prediction-phrase strong {
  display: inline-flex;
  align-items: center;
  gap: 0.1em;
  border-bottom: 2px solid var(--ink);
}

.prediction-phrase strong::after {
  content: "";
  display: inline-block;
  width: 0.08em;
  height: 0.95em;
  background: var(--ink);
  animation: caret-blink 1.1s steps(1, end) infinite;
}

.prediction-options {
  display: grid;
  gap: var(--space-2);
}

.prediction-options section {
  display: grid;
  grid-template-columns: minmax(8rem, 12rem) minmax(0, 1fr);
  gap: var(--space-2);
  align-items: center;
}

.prediction-word {
  display: flex;
  gap: var(--space-2);
  justify-content: space-between;
  min-width: 0;
}

.prediction-word span {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--muted);
}

.prediction-bar {
  height: 1.5rem;
  border: 1px solid var(--line);
  background: var(--panel);
}

.prediction-bar i {
  display: block;
  width: var(--score);
  height: 100%;
  background: var(--ink);
  animation: prediction-fill 720ms ease-out both;
  animation-delay: var(--delay);
}

.prediction-options section:not(:first-child) .prediction-bar i {
  background: var(--muted);
}

.agent-flow-block {
  display: grid;
  gap: var(--space-3);
}

.flow-question {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: var(--space-2) var(--space-3);
}

.agent-lanes {
  display: grid;
  gap: var(--space-3);
}

.agent-lanes > section {
  position: relative;
  display: grid;
  gap: var(--space-2);
  border: 1px solid var(--line);
  background: #ffffff;
  padding: var(--space-2);
  overflow: visible;
}

.agent-lanes h4 {
  margin: 0;
}

.flow-badge {
  position: absolute;
  top: -0.8rem;
  right: -0.65rem;
  z-index: 1;
  border: 2px solid var(--ink);
  background: var(--paper);
  box-shadow: 0.2rem 0.2rem 0 var(--ink);
  padding: 0.28rem 0.55rem;
  font-weight: 700;
  line-height: 1.2;
  transform: rotate(4deg);
}

.flow-track {
  display: grid;
  grid-template-columns: minmax(13rem, 1.1fr) 4rem minmax(9rem, 0.55fr);
  gap: var(--space-2);
  align-items: center;
}

.flow-inputs {
  display: grid;
  gap: var(--space-1);
}

.flow-input {
  display: grid;
  gap: var(--space-1);
  border: 1px solid var(--line);
  background: var(--paper);
  padding: var(--space-2);
}

.flow-input span {
  color: var(--muted);
  font-weight: 700;
}

.flow-input ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-input li {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 0.125rem 0.375rem;
}

.flow-line {
  position: relative;
  height: 1px;
  background: var(--line);
}

.flow-line::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 0.5rem;
  height: 0.45rem;
  background: var(--ink);
  transform: translateY(-50%);
  animation: flow-pulse 1.2s ease-out 250ms both;
}

.flow-line::after {
  content: "";
  position: absolute;
  right: 0.45rem;
  top: 50%;
  width: 0.45rem;
  height: 0.45rem;
  border-top: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
  transform: translateY(-50%) rotate(45deg);
}

.flow-output {
  border: 2px solid var(--ink);
  padding: var(--space-2);
  font-weight: 700;
}

.completion-lead {
  margin: 0;
  font-family: var(--sans);
  font-size: var(--heading-size);
  font-weight: 600;
  line-height: 1.1;
}

.completion-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.completion-options section {
  border-top: 2px solid var(--line);
  padding-top: var(--space-2);
}

.completion-options span {
  display: block;
  color: var(--muted);
}

.message-list {
  display: grid;
  border-top: 1px solid var(--line);
  margin-top: var(--space-2);
}

.message-row {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr);
  gap: var(--space-3);
  border-bottom: 1px solid var(--line);
  padding: var(--space-2) 0;
}

.message-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.message-row h4,
.message-row p,
.message-row ul {
  margin: 0;
}

.message-row h4 {
  font-family: var(--mono);
  font-size: var(--text-size);
}

.message-row ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  padding: 0;
  list-style: none;
}

.message-row li {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 0.125rem 0.375rem;
}

.room-block {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.room-block section {
  display: grid;
  gap: var(--space-2);
}

.room-block img,
.room-block section > div {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  background: var(--panel);
  object-fit: cover;
}

.link-list-block ul {
  display: grid;
  gap: var(--space-1);
  padding-left: 0;
  list-style: none;
}

.link-list-block li {
  width: fit-content;
  max-width: 100%;
}

.steps-block ol,
.ladder-block ol,
.problem-block ol {
  margin: 0;
  padding-left: 1.3rem;
}

.steps-block ol,
.problem-block ol {
  display: grid;
  gap: var(--space-1);
}

.surface-map-block {
  display: grid;
  gap: var(--space-3);
}

.surface-center {
  width: fit-content;
  border: 2px solid var(--ink);
  background: var(--paper);
  padding: var(--space-1) var(--space-2);
  font-weight: 700;
}

.surface-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
}

.surface-list section {
  border-top: 2px solid var(--line);
  padding-top: var(--space-2);
}

.ladder-block ol {
  display: grid;
  gap: var(--space-1);
  list-style-position: inside;
  margin: 0;
  padding: 0;
}

.ladder-block li {
  border: 1px solid var(--line);
  background: #ffffff;
  padding: var(--space-2) var(--space-3);
}

.problem-block li + li {
  margin-top: var(--space-1);
}

.tower-block {
  position: relative;
  display: grid;
  gap: var(--space-2);
}

.tower-block.has-up-arrow {
  padding-right: 4.5rem;
}

.tower-block.has-up-arrow::before {
  content: "";
  position: absolute;
  right: 1.75rem;
  bottom: 1.2rem;
  width: 0;
  height: calc(100% - 4.6rem);
  border-left: 2px solid var(--ink);
}

.tower-block.has-up-arrow::after {
  content: "";
  position: absolute;
  right: 1.4rem;
  top: 3.1rem;
  width: 0.7rem;
  height: 0.7rem;
  border-top: 2px solid var(--ink);
  border-left: 2px solid var(--ink);
  transform: rotate(45deg);
}

.tower-block h3 {
  margin-bottom: 0;
}

.tower {
  display: grid;
  gap: var(--space-1);
  width: min(100%, 36rem);
}

.tower section {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: 0.25rem var(--space-2);
  align-items: start;
  min-height: 5.8rem;
  border: 1px solid var(--line);
  background: #ffffff;
  padding: var(--space-2);
}

.tower section:nth-child(1) {
  width: 74%;
  justify-self: center;
}

.tower section:nth-child(2) {
  width: 87%;
  justify-self: center;
}

.tower section:nth-child(3) {
  width: 100%;
  justify-self: center;
  border-bottom: 3px solid var(--ink);
}

.tower span {
  grid-row: span 2;
  color: var(--muted);
}

.tower h4,
.tower p {
  margin: 0;
}

/* Stack block — layered pipeline (Brain / Body / Tools) */
.stack-block {
  display: grid;
  gap: var(--space-2);
}

.stack-image {
  width: 100%;
  max-width: 42rem;
  height: auto;
  border-radius: 0.5rem;
  border: 1px solid var(--line);
  justify-self: center;
}

.stack {
  display: grid;
  gap: 0;
  max-width: 42rem;
}

.stack-layer {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-1);
  border: 1px solid var(--line);
  background: #ffffff;
  padding: var(--space-2) var(--space-3);
}

.stack-layer-1 {
  width: 60%;
  justify-self: center;
  border: 2px solid var(--ink);
}

.stack-layer-2 {
  width: 80%;
  justify-self: center;
}

.stack-layer-3 {
  width: 100%;
  justify-self: center;
  border-bottom: 3px solid var(--ink);
}

.stack-layer-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.stack-layer-num {
  color: var(--muted);
  font-weight: 700;
}

.stack-layer-head h4 {
  margin: 0;
}

.stack-layer-role {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.stack-layer-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.stack-layer-items li {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 0.125rem 0.5rem;
  font-size: 0.875rem;
}

.stack-arrow {
  width: 2px;
  height: 1.75rem;
  justify-self: center;
  background: var(--ink);
  position: relative;
}

.stack-arrow::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0.5rem;
  height: 0.5rem;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: translateX(-50%) rotate(45deg);
}

@media (max-width: 560px) {
  .stack-layer-1,
  .stack-layer-2 {
    width: 100%;
  }
}

.term-list-block dl {
  display: grid;
  gap: var(--space-2);
  margin: 0;
}

.term-list-block div {
  display: grid;
  grid-template-columns: minmax(8.5rem, 12rem) minmax(0, 1fr);
  gap: var(--space-2);
  border-bottom: 1px solid var(--line);
  padding-bottom: var(--space-2);
  scroll-margin-top: 2rem;
}

.term-list-block div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.term-list-block dt {
  font-weight: 700;
}

.term-list-block dd {
  margin: 0;
}

@media (max-width: 1060px) {
  .chart-legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .page-shell {
    display: block;
  }

  .sidebar {
    position: relative;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .document {
    padding-top: var(--space-5);
  }

  .column-grid,
  .levels-block,
  .completion-options,
  .room-block,
  .surface-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .chart-total {
    writing-mode: initial;
  }

  .term-list-block div {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-1);
  }
}

@media (max-width: 560px) {
  .nav-list,
  .chart-legend {
    grid-template-columns: minmax(0, 1fr);
  }

  .document {
    padding-inline: var(--space-3);
  }

  .message-row {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-1);
  }

  .prediction-options section,
  .flow-track {
    grid-template-columns: minmax(0, 1fr);
  }

  .flow-line {
    width: 0.75rem;
    height: 2rem;
    justify-self: start;
    margin-left: var(--space-3);
    border-left: 1px solid var(--line);
    background: transparent;
  }

  .flow-line::before {
    left: 50%;
    top: 0;
    width: 0.45rem;
    height: 0.5rem;
    transform: translateX(-50%);
    animation-name: flow-pulse-down;
  }

  .flow-line::after {
    left: 50%;
    right: auto;
    top: auto;
    bottom: 0.45rem;
    transform: translateX(-50%) rotate(135deg);
  }

  .tower-block.has-up-arrow {
    padding-right: 2.5rem;
  }

  .tower-block.has-up-arrow::before {
    right: 0.9rem;
  }

  .tower-block.has-up-arrow::after {
    right: 0.55rem;
  }
}

@keyframes prediction-fill {
  from {
    width: 0;
  }
}

@keyframes caret-blink {
  0%,
  48% {
    opacity: 1;
  }

  49%,
  100% {
    opacity: 0;
  }
}

@keyframes flow-pulse {
  from {
    left: 0;
    opacity: 0;
  }

  20%,
  70% {
    opacity: 1;
  }

  to {
    left: calc(100% - 0.5rem);
    opacity: 0;
  }
}

@keyframes flow-pulse-down {
  from {
    top: 0;
    opacity: 0;
  }

  20%,
  70% {
    opacity: 1;
  }

  to {
    top: calc(100% - 0.5rem);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .prediction-bar i,
  .prediction-phrase strong::after,
  .flow-line::before {
    animation: none;
  }
}