:root {
  --paper: #faf9f5;
  --ink: #202725;
  --muted: #62706c;
  --line: #d9ded6;
  --yellow: #ffda35;
  --blue: #a3e1ef;
  --mint: #e5f3e8;
  --radius: 18px;
  font-family: Inter, "Arial", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  font-size: 18px;
  line-height: 1.65;
  scroll-behavior: smooth
}

* {
  box-sizing: border-box
}

body {
  margin: 0
}

button,
input,
select {
  font: inherit
}

button,
a,
input {
  -webkit-tap-highlight-color: transparent
}

button,
a {
  touch-action: manipulation
}

button {
  cursor: pointer;
  color: inherit
}

a {
  color: inherit;
  text-decoration: none
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 4px
}

button {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 15px;
  font-weight: 600
}

button:hover:not(:disabled) {
  background: #e8ece5
}

button:disabled {
  cursor: default;
  opacity: .42
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid #187991;
  outline-offset: 4px
}

button,
input,
a {
  transition: background .18s, border-color .18s, transform .18s
}

button:active:not(:disabled) {
  transform: translateY(2px)
}

[hidden] {
  display: none !important
}

.skip-link {
  position: fixed;
  top: -70px;
  left: 20px;
  z-index: 30;
  background: var(--yellow);
  padding: 16px
}

.skip-link:focus {
  top: 12px
}

.site-header {
  height: 88px;
  max-width: 1400px;
  margin: auto;
  padding: 0 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line)
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 28px;
  font-weight: 850;
  letter-spacing: -1.3px
}

.brand img {
  border-radius: 50%;
  border: 1px solid var(--ink)
}

.brand span {
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--muted)
}

.site-header nav {
  display: flex;
  gap: 25px;
  align-items: center;
  font-size: 15px;
  font-weight: 600
}

.lang-toggle-btn {
  border: 0;
  padding: 8px 0
}

.lang-seg {
  opacity: .4
}

.lang-toggle-btn[data-current=en] [data-lang=en],
.lang-toggle-btn[data-current=zh] [data-lang=zh] {
  opacity: 1
}

.lang-sep {
  padding: 0 4px;
  color: var(--line)
}

main {
  max-width: 1400px;
  margin: auto;
  padding: 0 48px
}

.hero {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  align-items: center;
  gap: 40px;
  padding: 80px 0 70px;
  min-height: 440px
}

.eyebrow {
  font-family: "Courier New", monospace;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  line-height: 1.6;
  display: flex;
  align-items: center;
  gap: 9px
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #459c6b;
  box-shadow: 0 0 0 4px #e1eedf
}

h1 {
  font-size: clamp(40px, 4.1vw, 60px);
  letter-spacing: -2.6px;
  line-height: 1.12;
  margin: 26px 0 22px;
  font-weight: 800
}

h1 span {
  color: #417b88
}

html[lang=zh-CN] h1 {
  font-size: clamp(36px, 3.4vw, 50px);
  line-height: 1.35;
  letter-spacing: -1.8px
}

.hero-description {
  font-size: 18px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 525px;
  margin: 0 0 25px
}

.hero-actions,
.walkthrough-controls,
.walkthrough-finish,
.comparison-actions,
.repair-jumps {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.hero-copy .hero-note {
  display: block;
  margin: 18px 0 0;
}

.hero-note a {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.rl-walkthrough {
  padding: 36px 0 48px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 20px;
}

.walkthrough-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.walkthrough-stages {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  margin: 24px 0;
}

.walkthrough-stages [aria-current],
.walkthrough-stages [aria-current]:hover {
  background: var(--yellow);
  border-color: var(--ink);
}

.walkthrough-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr);
  align-items: start;
  gap: 32px;
}

.walkthrough-body>.world {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f2f7ef;
  min-height: 390px;
}

.walkthrough-disclaimer,
.comparison-note,
.recipe-source p {
  font-size: 16px;
  color: var(--muted);
}

.walkthrough-prompt {
  margin: 16px 0;
  padding: 12px;
  background: white;
  border-radius: 8px;
}

.walkthrough-samples {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.walkthrough-sample {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 2px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 15px;
}

.walkthrough-sample strong {
  font-size: 21px;
}

.walkthrough-sample.correct {
  background: #d8efd9;
  border-color: #7ca982;
}

.walkthrough-sample.incorrect {
  background: #fbebe2;
}

.walkthrough-update {
  padding: 16px 0;
  font-size: 16px;
  overflow-wrap: anywhere;
}

[data-tour-phase="1"] .sampler,
[data-tour-phase="3"] .trainer,
[data-tour-phase="4"] .flow-arrow {
  outline: 3px solid #bf9200;
  outline-offset: 2px;
}

.walkthrough-controls,
.walkthrough-finish {
  margin-top: 24px;
}

.comparison,
.recipe-source {
  padding: 20px;
  margin: 22px 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.comparison summary,
.recipe-source summary,
.repair-preview summary {
  cursor: pointer;
  font-weight: 700;
}

.comparison-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.comparison-config {
  padding: 16px;
  border-radius: 12px;
  background: var(--paper);
  min-width: 0;
}

.comparison-config p,
.comparison-config li,
.comparison-insights,
.config-differences,
.recipe-source dl {
  font-size: 16px;
  overflow-wrap: anywhere;
}

.comparison-switch {
  display: none;
}

.config-differences {
  list-style: none;
  padding: 0;
}

.config-differences li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.repair-issue {
  padding: 18px;
  margin: 16px 0;
  background: #fff9e8;
  border: 1px solid #d9cda6;
  border-radius: 12px;
}

.repair-issue h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.repair-preview {
  padding: 16px 0 4px;
  font-size: 16px;
  overflow-wrap: anywhere;
}

.recipe-source dt {
  font-weight: 700;
  margin-top: 14px;
}

.recipe-source dd {
  margin-left: 0;
}

.recipe-source a {
  text-decoration: underline;
}

@media (max-width: 720px) {
  .site-header .install-nav {
    display: none;
  }

  .walkthrough-body,
  .comparison-pair {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .walkthrough-body>.world,
  .comparison,
  .comparison-config {
    padding: 12px;
  }

  .comparison-switch {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 18px;
  }

  .comparison-switch [aria-pressed="true"] {
    background: var(--yellow);
  }

  .comparison-config:not(.selected) {
    display: none;
  }
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  border-radius: 9px;
  padding: 13px 19px;
  font-size: 15px;
  font-weight: 700;
  border: 1px solid var(--ink);
  text-decoration: none !important
}

.primary {
  background: var(--yellow);
  box-shadow: 2px 3px 0 var(--ink)
}

.primary:hover:not(:disabled) {
  background: #f4cd15;
  transform: translateY(-2px)
}

.dark {
  background: var(--ink);
  color: white
}

.dark:hover:not(:disabled) {
  background: #36433d
}

.light {
  background: var(--paper)
}

.hero-note {
  font-size: 14px;
  color: var(--muted);
  display: inline-block;
  margin-left: 14px
}

.hero-art {
  justify-self: center;
  position: relative;
  width: 330px;
  height: 330px;
  display: flex;
  align-items: center;
  justify-content: center
}

.mascot-frame {
  width: 268px;
  height: 268px;
  border-radius: 38% 55% 40% 46%;
  background: var(--yellow);
  overflow: hidden;
  border: 2px solid var(--ink);
  transform: rotate(-8deg);
  box-shadow: 10px 12px 0 #cbe9e8
}

.mascot-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: rotate(8deg) scale(1.03)
}

.orbit-label {
  position: absolute;
  background: white;
  padding: 9px 13px;
  border: 1px solid var(--ink);
  border-radius: 6px;
  font-family: monospace;
  font-size: 14px;
  z-index: 1;
  box-shadow: 2px 3px 0 #d9ded6
}

.label-top {
  top: 14px;
  left: -15px;
  transform: rotate(-5deg)
}

.label-bottom {
  bottom: 6px;
  right: -8px;
  transform: rotate(4deg)
}

.spark {
  position: absolute;
  font-size: 38px
}

.spark-one {
  right: -12px;
  top: 38px;
  color: #3988a0
}

.spark-two {
  bottom: 34px;
  left: -14px;
  font-size: 29px
}

.installation {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.6fr);
  gap: 48px;
  padding: 48px 0 60px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 20px;
}

.install-intro>p:not(.eyebrow),
.install-description,
.install-note {
  color: var(--muted);
}

.installation a:not(.button) {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.install-journey {
  list-style: none;
  padding: 12px 0;
}

.install-journey li {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 16px 0;
}

.install-journey span {
  display: grid;
  place-items: center;
  flex: 0 0 36px;
  height: 36px;
  background: var(--mint);
  border: 1px solid #b5d3bd;
  border-radius: 50%;
  font: 700 14px "Courier New", monospace;
}

.install-workspace {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.install-methods {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  border: 0;
}

.install-methods legend {
  margin-bottom: 10px;
  font-size: 16px;
  color: var(--muted);
}

.install-methods label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
}

.install-methods label:has(input:checked) {
  background: var(--mint);
  border-color: #4f7b5b;
}

.install-methods input {
  accent-color: #41744c;
  margin: 0;
}

.install-methods span {
  font-weight: 700;
}

.install-methods small {
  display: block;
  color: var(--muted);
  font-size: 14px;
  font-weight: 400;
}

.install-description,
.install-note {
  font-size: 16px;
  overflow-wrap: anywhere;
}

.install-image-control {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin: 20px 0;
  font-size: 16px;
}

.install-image-control select {
  max-width: 100%;
  padding: 9px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.install-terminal {
  margin: 16px 0;
  border: 1px solid #3d4d41;
  border-radius: 10px;
  background: #141e19;
  color: #d3ecd7;
  overflow: hidden;
}

.install-terminal-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid #3d4d41;
  font-size: 15px;
}

.install-terminal button {
  flex-shrink: 0;
  padding: 5px 10px;
  border-color: #67786b;
}

.install-terminal button:hover {
  background: #324538;
}

.install-terminal pre {
  margin: 0;
  padding: 18px 16px;
  font-size: 15px;
  line-height: 1.8;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

#install-image-value {
  color: #ffdf6a;
}

.install-next {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 16px;
}

.lab {
  border-top: 1px solid var(--line);
  padding: 38px 0 60px;
  scroll-margin-top: 20px
}

.lab-heading,
.recipe-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px
}

h2 {
  font-size: 30px;
  letter-spacing: -1px;
  margin: 8px 0 12px;
  line-height: 1.35
}

.lab-heading .eyebrow {
  color: var(--muted)
}

.history-actions {
  display: flex;
  gap: 8px
}

.history-actions button {
  font-size: 14px
}

.presets {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 18px 0 28px;
  flex-wrap: wrap
}

.presets>span {
  font-size: 14px;
  color: var(--muted);
  margin-right: 6px
}

.presets button {
  border-radius: 24px;
  background: white;
  font-weight: 400;
  font-size: 14px
}

.presets button:hover {
  border-color: var(--ink)
}

.steps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
  margin-bottom: 18px
}

.steps button {
  padding: 14px 5px;
  border: 0;
  border-radius: 8px;
  color: var(--muted);
  text-align: left;
  border-bottom: 2px solid var(--line);
  font-size: 14px
}

.steps button span {
  font-family: monospace;
  font-size: 14px;
  margin-right: 8px;
  opacity: .75
}

.steps button[aria-current=step] {
  color: var(--ink);
  border-bottom-color: var(--ink);
  background: #f0efdf
}

.workbench {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 20px;
  align-items: start
}

.builder-panel {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 27px;
  min-height: 585px;
  display: flex;
  flex-direction: column
}

.step-heading {
  display: flex;
  gap: 15px;
  align-items: flex-start;
  margin-bottom: 23px
}

.step-number {
  font-family: monospace;
  background: var(--yellow);
  padding: 8px 9px;
  border: 1px solid var(--ink);
  border-radius: 9px;
  font-size: 18px
}

.step-heading h3 {
  font-size: 21px;
  margin: 2px 0 7px;
  letter-spacing: -.5px
}

.step-heading p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0
}

.field-group {
  border: 0;
  margin: 0 0 20px;
  padding: 0;
  min-width: 0
}

.field-group legend,
.input-label {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 9px
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px
}

.option-card {
  position: relative;
  display: flex;
  flex-direction: column;
  text-align: left;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 13px 14px;
  cursor: pointer;
  transition: background .2s, border-color .2s, transform .2s
}

.option-card:hover {
  border-color: #839790;
  transform: translateY(-2px)
}

.option-card:has(input:checked) {
  background: #e8f5f3;
  border-color: #397d78;
  box-shadow: inset 0 0 0 1px #397d78
}

.option-card input {
  position: absolute;
  right: 11px;
  top: 13px;
  width: 14px;
  height: 14px;
  accent-color: #337a73;
  margin: 0
}

.option-title {
  font-size: 15px;
  font-weight: 700;
  padding-right: 17px;
  line-height: 1.4
}

.option-description {
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
  margin-top: 5px
}

.option-grid.single {
  grid-template-columns: 1fr
}

.toggle-row {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 13px 0;
  border-bottom: 1px solid #e8ece5;
  cursor: pointer
}

.toggle-row input {
  accent-color: #397d78;
  width: 17px;
  height: 17px;
  margin: 1px 0 0;
  flex-shrink: 0
}

.toggle-row strong {
  display: block;
  font-size: 15px
}

.toggle-row small {
  display: block;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  margin-top: 5px
}

.inputs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 13px;
  margin: 12px 0
}

.input-label {
  display: block;
  line-height: 1.5
}

.input-label input,
.input-label select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 10px;
  font-size: 14px;
  background: var(--paper);
  margin-top: 6px;
  color: var(--ink);
  min-width: 0
}

.input-label.wide {
  grid-column: 1/-1
}

.input-label small {
  font-size: 14px;
  font-weight: 400;
  color: var(--muted);
  display: block;
  margin-top: 5px
}

.step-help {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin: 8px 0 20px
}

.learn-button {
  border: 0;
  padding: 6px 7px;
  font-size: 14px;
  color: #326f83;
  background: #edf5f7
}

.step-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  margin-top: auto
}

.step-controls>span {
  font-size: 14px;
  color: var(--muted)
}

.preview {
  border: 1px solid #c9d9d5;
  border-radius: var(--radius);
  overflow: hidden;
  background: #edf3ee;
  position: sticky;
  top: 18px
}

.preview-heading {
  padding: 18px 19px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px
}

.preview-heading .eyebrow {
  font-size: 14px;
  letter-spacing: 1px
}

.preview-heading button {
  font-size: 14px;
  border-color: #bacdc4;
  padding: 7px 9px;
  background: #fff9
}

.world {
  min-height: 252px;
  padding: 23px 24px 10px;
  background-image: radial-gradient(#bdcec7 .7px, transparent .7px);
  background-size: 14px 14px;
  position: relative
}

.world-top {
  font-size: 14px;
  font-family: monospace;
  text-align: center;
  letter-spacing: 1px;
  color: var(--muted);
  margin-bottom: 18px
}

.world-nodes {
  display: grid;
  grid-template-columns: 1fr 36px 1fr;
  align-items: center;
  gap: 3px
}

.world-node {
  background: #fffdf7;
  border: 1.5px solid #35413a;
  border-radius: 13px;
  padding: 14px 10px;
  text-align: center;
  box-shadow: 3px 4px 0 #bdcfc5;
  transition: all .35s;
  min-width: 0;
  position: relative
}

.world-node strong {
  display: block;
  font-size: 15px;
  line-height: 1.5
}

.world-node small {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-top: 4px
}

.world-node.trainer {
  background: #ffeb87
}

.world-node.sampler {
  background: #bdeaf1
}

.world-node.external {
  border-style: dashed;
  box-shadow: 4px 4px 0 #bdcfd6
}

.chips {
  display: flex;
  gap: 3px;
  margin: 10px auto 0;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 135px
}

.gpu {
  display: block;
  width: 14px;
  height: 17px;
  border: 1px solid #64736d;
  border-radius: 3px;
  background: #fff8;
  position: relative
}

.gpu:after {
  content: '';
  position: absolute;
  inset: 4px 3px;
  background: #9aa9a0;
  border-radius: 1px
}

.flow-arrow {
  text-align: center;
  position: relative;
  color: #61796c;
  font-size: 22px
}

.flow-arrow:after {
  content: '';
  position: absolute;
  left: 5px;
  top: 7px;
  width: 7px;
  height: 7px;
  background: #318994;
  border-radius: 50%;
  opacity: 0
}

.world.running .flow-arrow:after {
  animation: flow 1.5s infinite
}

.world.running .world-node.active {
  box-shadow: 0 0 0 5px #8ebea055, 3px 4px 0 #bdcfc5;
  transform: translateY(-4px)
}

.world-colocate {
  border: 1px dashed #94a59d;
  padding: 16px 10px 10px;
  border-radius: 15px;
  position: relative
}

.pool-label {
  display: block;
  font-size: 14px;
  color: #5f7669;
  text-align: center;
  margin-top: 12px;
  font-family: monospace
}

.reward-loop {
  border: 1px solid #a0b7ac;
  border-top: 0;
  border-radius: 0 0 14px 14px;
  width: 72%;
  height: 27px;
  margin: auto;
  position: relative
}

.reward-loop span {
  position: absolute;
  bottom: -9px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 14px;
  background: #edf3ee;
  padding: 0 8px;
  white-space: nowrap
}

.pd-nodes {
  display: flex;
  gap: 4px;
  margin-top: 9px
}

.pd-nodes span {
  border: 1px solid #60929b;
  padding: 4px;
  border-radius: 5px;
  font-size: 14px;
  flex: 1;
  background: #dff6fa
}

.cache-tier {
  font-size: 14px;
  border: 1px dashed #698b96;
  background: #f7f2dc;
  border-radius: 5px;
  margin: 7px 0 0;
  padding: 4px
}

.simulation-status {
  min-height: 29px;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
  padding: 0 16px;
  margin: 8px 0 12px;
  line-height: 1.5
}

.summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 15px 20px;
  background: #fff9;
  border-top: 1px solid #d1ddd6;
  border-bottom: 1px solid #d1ddd6;
  gap: 8px
}

.summary small {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 6px
}

.summary strong {
  font-size: 14px;
  font-weight: 650
}

.advice {
  padding: 15px 20px;
  font-size: 14px;
  line-height: 1.75
}

.advice p {
  margin: 0 0 8px
}

.advice p:last-child {
  margin: 0
}

.advice .warning {
  color: #825c20
}

.review-link {
  display: flex;
  justify-content: space-between;
  padding: 14px 20px;
  border-top: 1px solid #d1ddd6;
  font-size: 14px;
  font-weight: 700
}

.recipe {
  background: var(--ink);
  color: #f9f9ef;
  padding: 34px;
  border-radius: 20px;
  margin: 0 0 60px;
  scroll-margin-top: 20px
}

.recipe-heading h2 {
  margin-bottom: 7px
}

.recipe-heading p:not(.eyebrow) {
  font-size: 14px;
  color: #afc0b5;
  line-height: 1.7
}

.recipe-heading .button {
  color: var(--ink);
  white-space: nowrap
}

.recipe .eyebrow {
  color: #cde398
}

.artifact-toolbar {
  margin-top: 25px;
  background: #303b35;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-radius: 9px 9px 0 0;
  padding: 10px 13px;
  flex-wrap: wrap
}

.artifact-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap
}

.artifact-tabs button {
  color: #c2cfc5;
  border: 0;
  font-family: monospace;
  font-size: 14px
}

.artifact-tabs button[aria-selected=true] {
  color: white;
  background: #4a5e50
}

.artifact-actions {
  display: flex;
  gap: 9px;
  align-items: center
}

.artifact-actions button {
  font-size: 14px;
  padding: 8px 12px
}

.artifact-actions>button:first-child {
  color: #dfe8df;
  border: 1px solid #67786b
}

.artifact-actions .primary {
  color: var(--ink);
  box-shadow: none
}

.recipe pre {
  margin: 0;
  background: #141e19;
  padding: 22px;
  border: 1px solid #3d4d41;
  border-top: 0;
  border-radius: 0 0 10px 10px;
  overflow: auto;
  max-height: 490px;
  min-height: 170px;
  color: #c5e3c8;
  line-height: 1.9;
  font-size: 14px;
  tab-size: 2
}

.run-guide {
  margin-top: 25px
}

.run-guide h3 {
  font-size: 18px
}

.run-guide ol {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  list-style: none;
  padding: 0;
  counter-reset: run
}

.run-guide li {
  font-size: 14px;
  color: #b8c7bd;
  line-height: 1.8;
  counter-increment: run
}

.run-guide li:before {
  content: '0' counter(run);
  display: block;
  font-family: monospace;
  color: #ead77f;
  margin-bottom: 8px
}

.run-guide li strong {
  display: block;
  color: white;
  font-size: 15px;
  margin-bottom: 4px
}

.run-guide a {
  color: #c8e5ea;
  text-decoration: underline
}

.run-guide code {
  color: #e3eec3;
  overflow-wrap: anywhere
}

.recipe-footnote {
  font-size: 14px;
  line-height: 1.7;
  color: #afc0b5;
  border-top: 1px solid #415047;
  padding-top: 18px;
  margin: 23px 0 0
}

.notice {
  border: 1px solid #d6b763;
  background: #fff3ca;
  color: #594516;
  border-radius: 8px;
  padding: 12px 15px;
  font-size: 14px;
  line-height: 1.75;
  margin: 14px 0
}

.notice.error {
  background: #ffe3dc;
  color: #8b3328;
  border-color: #f2b6a8
}

.notice ul {
  margin: 0;
  padding-left: 16px
}

.library-teaser {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 15px;
  border-top: 1px solid var(--line);
  padding: 40px 0 70px
}

.library-teaser>div {
  grid-row: span 2;
  padding-right: 25px
}

.library-teaser>div p:not(.eyebrow) {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted)
}

.library-teaser>a {
  background: white;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6
}

.library-teaser>a:hover {
  border-color: #618c88;
  background: #eef7f4
}

.library-teaser>a>span {
  font-family: monospace;
  color: #7d9994;
  display: block;
  font-size: 14px
}

.library-teaser strong {
  display: block;
  font-size: 16px;
  color: var(--ink);
  margin: 12px 0 7px
}

footer {
  max-width: 1400px;
  margin: auto;
  padding: 25px 48px 35px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line);
  gap: 15px
}

footer .brand {
  font-size: 23px
}

footer>span {
  font-size: 14px;
  color: var(--muted)
}

.toast {
  position: fixed;
  bottom: 25px;
  left: 50%;
  transform: translate(-50%, 20px);
  background: var(--ink);
  color: white;
  border: 1px solid #64766d;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  z-index: 40;
  transition: all .2s;
  max-width: 90vw
}

.toast.visible {
  opacity: 1;
  transform: translate(-50%, 0)
}

dialog {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 18px;
  max-width: 620px;
  width: calc(100% - 32px);
  padding: 32px;
  max-height: 85vh;
  box-shadow: 8px 8px 0 #0003
}

dialog::backdrop {
  background: #172e2466;
  backdrop-filter: blur(3px)
}

.close-dialog {
  float: right;
  font-size: 22px;
  padding: 1px 9px
}

dialog p,
dialog li {
  font-size: 16px;
  line-height: 1.9
}

dialog a {
  color: #24758b;
  text-decoration: underline
}

dialog .formula {
  background: #e9eee6;
  border-radius: 8px;
  padding: 18px;
  font-family: monospace;
  font-size: 15px;
  overflow-x: auto
}

dialog .learn-links {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  margin-top: 22px
}

.enter {
  animation: enter .3s ease-out
}

@keyframes enter {
  from {
    opacity: .5;
    transform: translateY(6px)
  }

  to {
    opacity: 1;
    transform: translateY(0)
  }
}

@keyframes flow {
  0% {
    opacity: 0;
    transform: translateX(0)
  }

  30% {
    opacity: 1
  }

  100% {
    opacity: 0;
    transform: translateX(20px)
  }
}

@media(min-width:1550px) {
  main {
    padding: 0 64px
  }

  .hero {
    padding-top: 95px;
    padding-bottom: 85px
  }
}

@media(max-width:1000px) {
  .installation {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .install-journey {
    display: flex;
    flex-wrap: wrap;
    gap: 0 24px;
  }
  main {
    padding: 0 24px
  }

  .site-header {
    padding: 0 24px
  }

  .hero {
    gap: 15px;
    padding: 55px 0
  }

  .hero-art {
    transform: scale(.82);
    width: 280px
  }

  .hero-note {
    display: block;
    margin: 16px 0 0
  }

  .workbench {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 12px
  }

  .builder-panel {
    padding: 20px
  }

  .preview-heading {
    flex-wrap: wrap
  }

  .world {
    padding: 20px 12px
  }

  .steps button {
    font-size: 14px
  }

  .steps button span {
    display: block;
    margin-bottom: 4px
  }

  .library-teaser {
    grid-template-columns: 1fr 1fr
  }

  .library-teaser>div {
    grid-column: 1/-1;
    grid-row: auto
  }

  .brand span {
    display: none
  }

  footer {
    padding: 25px 24px
  }
}

@media(max-width:720px) {
  .install-workspace {
    padding: 16px;
  }

  .install-methods label {
    padding: 10px;
  }

  .install-terminal-bar,
  .install-terminal pre {
    padding: 12px;
  }

  main {
    padding: 0 18px
  }

  .site-header {
    height: 73px;
    padding: 0 18px
  }

  .site-header nav {
    gap: 14px;
    font-size: 14px
  }

  .brand {
    font-size: 25px
  }

  .brand img {
    width: 32px;
    height: 32px
  }

  .hero {
    grid-template-columns: 1fr;
    position: relative;
    padding: 38px 0 40px;
    gap: 10px
  }

  .hero-art {
    display: none
  }

  .hero-copy {
    max-width: 560px
  }

  h1 {
    font-size: 42px;
    letter-spacing: -1.8px
  }

  html[lang=zh-CN] h1 {
    font-size: 37px
  }

  .hero-description {
    font-size: 16px
  }

  .hero-note {
    display: inline-block;
    margin: 0 0 0 10px;
    font-size: 14px
  }

  .lab-heading {
    align-items: flex-start
  }

  .lab-heading h2 {
    font-size: 24px
  }

  .lab-heading .eyebrow {
    font-size: 14px
  }

  .history-actions {
    gap: 4px;
    flex-wrap: wrap;
    justify-content: flex-end;
    max-width: 155px;
    padding-top: 12px
  }

  .history-actions button {
    font-size: 14px;
    padding: 7px 8px
  }

  .presets {
    gap: 7px
  }

  .presets>span {
    width: 100%
  }

  .presets button {
    font-size: 14px;
    padding: 9px 10px
  }

  .steps {
    gap: 2px
  }

  .steps button {
    font-size: 14px;
    padding: 10px 3px
  }

  .workbench {
    grid-template-columns: 1fr
  }

  .builder-panel {
    min-height: 540px
  }

  .preview {
    position: static
  }

  .preview-heading {
    flex-wrap: nowrap
  }

  .world {
    padding: 18px 28px 10px;
    min-height: 230px
  }

  .recipe {
    padding: 21px 16px;
    border-radius: 14px
  }

  .recipe-heading {
    align-items: flex-start
  }

  .recipe-heading h2 {
    font-size: 25px
  }

  .recipe-heading .button {
    font-size: 14px;
    gap: 4px;
    padding: 9px
  }

  .recipe pre {
    font-size: 14px;
    padding: 15px
  }

  .run-guide ol {
    grid-template-columns: 1fr;
    gap: 15px
  }

  .run-guide li:before {
    display: inline-block;
    margin-right: 8px
  }

  .run-guide li strong {
    display: inline
  }

  .library-teaser {
    gap: 10px
  }

  .library-teaser>a {
    padding: 16px
  }

  .library-teaser strong {
    font-size: 15px
  }

  footer {
    flex-direction: column;
    align-items: flex-start
  }

  .inputs-grid {
    gap: 9px
  }

  .option-card {
    padding: 12px
  }

  .option-title {
    font-size: 14px
  }

  .eyebrow {
    font-size: 14px
  }
}

@media(prefers-reduced-motion:reduce) {

  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important
  }
}

.ecosystem {
  padding: 38px 0 65px;
  border-top: 1px solid var(--line)
}

.ecosystem-intro {
  max-width: 680px
}

.ecosystem-intro>p:last-child,
.advanced-section>div>p:last-child {
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted)
}

.glm-lineage {
  display: flex;
  gap: 35px;
  align-items: center;
  padding: 28px 0;
  margin: 12px 0 25px;
  border-bottom: 1px solid var(--line)
}

.zai-mark {
  font-size: 35px;
  font-weight: 800;
  white-space: nowrap;
  letter-spacing: -2px
}

.zai-mark>span {
  font-size: 17px;
  font-weight: 400;
  letter-spacing: 0;
  margin-left: 7px;
  color: var(--muted)
}

.glm-lineage>div {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  font-family: monospace;
  font-size: 16px
}

.glm-lineage>div>span {
  color: #9daaa1
}

.companion-projects h3 {
  margin: 0 0 16px;
  font-size: 20px;
}

.companion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 16px;
}

.companion-card {
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.companion-card:hover {
  background: var(--mint);
  border-color: #93b39a;
  text-decoration: none;
}

.companion-name {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 22px;
  font-weight: 700;
}

.companion-name>span {
  color: #417b88;
}

.companion-card p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.capabilities {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px
}

.capabilities article {
  border-left: 1px solid var(--line);
  padding: 5px 22px
}

.capabilities article:first-child {
  border-left: 0;
  padding-left: 0
}

.capability-icon {
  background: #ddedef;
  color: #306f78;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  border-radius: 11px
}

.capabilities article:nth-child(2) .capability-icon {
  background: #f7e69f;
  color: #716022
}

.capabilities article:nth-child(3) .capability-icon {
  background: #e4e9d5;
  color: #607240
}

.capabilities h3 {
  font-size: 19px;
  letter-spacing: -.5px;
  line-height: 1.5
}

.capabilities p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted)
}

.capability-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 20px
}

.capability-tags>span {
  font-size: 14px;
  border: 1px solid var(--line);
  padding: 5px 8px;
  border-radius: 5px;
  font-family: monospace
}

.scroll-invitation {
  margin-top: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-weight: 600
}

.scroll-invitation>span {
  font-size: 23px
}

.advanced-section {
  padding: 0 0 75px
}

.advanced-section>div {
  margin-bottom: 30px;
  max-width: 690px
}

.advanced-section details {
  border-top: 1px solid var(--line)
}

.advanced-section details:last-child {
  border-bottom: 1px solid var(--line)
}

.advanced-section summary {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  cursor: pointer;
  padding: 24px 0;
  font-size: 19px;
  letter-spacing: -.4px
}

.advanced-section summary::-webkit-details-marker {
  display: none
}

.advanced-section summary>span {
  font: 11px monospace;
  letter-spacing: 1px;
  min-width: 120px;
  color: var(--muted)
}

.advanced-section summary>b {
  margin-left: auto;
  font-weight: 400;
  font-size: 22px
}

.advanced-section details[open] summary>b {
  transform: rotate(45deg)
}

.advanced-section details>div {
  margin-left: 150px;
  padding: 0 0 25px;
  max-width: 750px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted)
}

.advanced-section details a {
  display: inline-block;
  margin-right: 22px;
  font-size: 14px;
  color: #286e80;
  text-decoration: underline;
  text-underline-offset: 5px
}

.advanced-section details p {
  margin: 0 0 18px
}

.hero {
  min-height: 560px
}

html[lang=zh-CN] h1 {
  font-size: 64px;
  line-height: 1.2
}

.hero h1 {
  font-size: 76px
}

.hero-art {
  width: 380px;
  height: 380px
}

.mascot-frame {
  width: 310px;
  height: 310px
}

@media(max-width:1000px) {
  .hero h1 {
    font-size: 62px
  }

  .hero-art {
    width: 300px
  }

  .capabilities {
    gap: 15px
  }

  .capabilities article {
    padding-right: 8px
  }

  .glm-lineage>div {
    gap: 12px;
    font-size: 14px
  }

  .zai-mark {
    font-size: 28px
  }
}

@media(max-width:720px) {
  .hero {
    min-height: 450px
  }

  .hero h1,
  html[lang=zh-CN] h1 {
    font-size: 64px
  }

  .glm-lineage {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px
  }

  .glm-lineage>div {
    gap: 10px;
    font-size: 14px
  }

  .capabilities {
    grid-template-columns: 1fr;
    gap: 20px
  }

  .capabilities article,
  .capabilities article:first-child {
    border-left: 0;
    border-bottom: 1px solid var(--line);
    padding: 0 0 20px
  }

  .capability-tags {
    margin-top: 12px
  }

  .advanced-section summary {
    font-size: 18px;
    gap: 12px;
    flex-wrap: wrap
  }

  .advanced-section summary>span {
    min-width: auto;
    width: 100%;
    font-size: 14px
  }

  .advanced-section details>div {
    margin-left: 0
  }

  .advanced-section details a {
    margin-bottom: 7px
  }

  .ecosystem h2 {
    font-size: 27px
  }
}

.resource-card {
  background: #f4f1df;
  border: 1px solid #e1dcbf;
  border-radius: 10px;
  padding: 16px;
  margin: 6px 0 12px
}

.resource-card>div:first-child {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px
}

.resource-card small {
  font-size: 14px;
  letter-spacing: .6px;
  color: var(--muted)
}

.resource-card strong {
  font-size: 21px
}

.resource-card strong>span {
  font-size: 14px;
  color: var(--muted);
  font-weight: 400
}

.resource-card p {
  font-size: 14px;
  line-height: 1.75;
  margin: 10px 0;
  color: #65644d
}

.resource-card a,
.parallel-explorer>a {
  color: #286e80;
  text-decoration: underline;
  font-size: 14px
}

.resource-total {
  border-top: 1px solid #ddd8bd;
  padding-top: 10px;
  display: flex;
  justify-content: space-between;
  font-size: 14px
}

.parallel-explorer {
  margin: 22px 0 6px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 15px
}

.parallel-explorer>summary {
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  line-height: 1.7
}

.parallel-tabs {
  display: flex;
  gap: 4px;
  margin: 14px 0;
  flex-wrap: wrap
}

.parallel-tabs button,
.cp-switch button {
  font-size: 14px;
  padding: 7px 9px;
  border-radius: 5px
}

.parallel-tabs button[aria-pressed=true],
.parallel-tabs button[aria-pressed=true]:hover,
.cp-switch button[aria-pressed=true],
.cp-switch button[aria-pressed=true]:hover {
  background: var(--ink);
  color: white
}

.parallel-flow {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  margin: 15px 0
}

.parallel-block {
  padding: 10px 8px;
  border: 1px solid #869991;
  border-radius: 5px;
  background: #f3f5ee;
  font: 11px monospace;
  display: inline-block;
  text-align: center
}

.parallel-block.blue {
  background: #c8eaf0
}

.parallel-block.yellow {
  background: #fae597
}

.parallel-block.pink {
  background: #f0ced3
}

.parallel-block.green {
  background: #cae5ce
}

.matrix-shards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px
}

.parallel-explorer p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted)
}

#parallel-diagram>small {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  display: block
}

.cp-switch {
  display: flex;
  gap: 6px;
  margin: 12px 0
}

.token-sequence {
  display: flex;
  gap: 3px;
  justify-content: center;
  margin: 15px 0
}

.parallel-block.token {
  padding: 7px 9px
}

.cp-ranks {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin: 12px 0
}

.cp-ranks>div {
  border: 1px dashed var(--line);
  border-radius: 6px;
  padding: 8px;
  display: flex;
  gap: 3px;
  flex-wrap: wrap
}

.cp-ranks small {
  display: block;
  width: 100%;
  font: 10px monospace;
  margin-bottom: 6px
}

.cp-ranks .parallel-block {
  padding: 7px 9px
}

.parallel-current {
  border-top: 1px solid var(--line);
  padding-top: 12px;
  margin-top: 16px
}

.memory-ledger {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 15px 0
}

.memory-ledger>div {
  display: flex;
  flex-direction: column;
  gap: 8px
}

.memory-ledger strong {
  font: 18px monospace
}

.memory-ledger small {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6
}

/* Scheduling makes storage, partial continuation, and overlap visible together. */
.schedule-explorer {
  margin: 24px 0;
  padding: 20px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px
}

.schedule-explorer>strong {
  display: block;
  margin-bottom: 15px
}

.schedule-explorer>p {
  font-size: 16px;
  line-height: 1.65
}

.schedule-explorer>small {
  display: block;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 10px
}

.schedule-explorer>a {
  font-size: 15px
}

.schedule-lanes {
  display: grid;
  gap: 8px
}

.schedule-lanes>div {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  align-items: center;
  font-size: 14px
}

.schedule-lanes small {
  width: 74px;
  flex-shrink: 0
}

.schedule-lanes span {
  padding: 8px 10px;
  border-radius: 6px
}

.lane-gen {
  background: #cce5ff
}

.lane-train {
  background: #ffde79
}

.lane-update {
  background: #c7eddd
}

.schedule-lanes .lane-muted {
  background: #eae8e1;
  color: #6a6862
}

.queue-pool {
  border: 1px dashed #8ca399;
  background: #e2f2e9;
  padding: 12px;
  border-radius: 10px;
  margin: 14px 0;
  font-size: 14px;
  line-height: 1.7
}

.queue-pool small {
  display: block
}

@media(max-width:380px) {
  .site-header {
    padding: 0 12px;
  }

  .site-header nav {
    gap: 9px;
    font-size: 14px;
  }

  .site-header .brand {
    font-size: 22px;
    gap: 6px;
  }

  .site-header .brand img {
    width: 26px;
    height: 26px;
  }
}

@media(max-width:380px) {
  .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Reading scale and the two capabilities that anchor the landing page. */
.hero-description {
  font-size: 20px;
  line-height: 1.7;
}

.hero-capabilities {
  padding-left: 24px;
  margin: 18px 0 26px;
  font-size: 18px;
  font-weight: 650;
}

.core-capabilities {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  padding: 10px 0 48px;
}

.core-capabilities article {
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 32px;
  background: #fffdf8;
  scroll-margin-top: 25px;
}

.core-capabilities article:first-child {
  background: #fff4bc;
}

.core-capabilities article:nth-child(2) {
  background: #dff3f6;
}

.core-capabilities h2 {
  font-size: clamp(24px, 2.2vw, 32px);
  line-height: 1.3;
  margin: 16px 0;
}

.core-capabilities p {
  font-size: 18px;
  line-height: 1.75;
}

.core-dataflow {
  grid-column: 1 / -1;
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
  color: var(--muted);
}

.capability-flow {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 16px;
  margin-top: 24px;
}

.capability-flow span {
  border: 1px solid #6b8177;
  border-radius: 8px;
  padding: 8px 12px;
  background: #fff9;
}

.glm-lineage>div {
  flex-wrap: wrap;
}

#step-description,
.option-description,
.toggle-row small,
.input-label small,
.resource-card p,
.parallel-explorer p,
.schedule-explorer p,
.advice p,
.run-guide li,
.recipe-footnote,
.advanced-section details p,
.library-teaser>div p:not(.eyebrow) {
  font-size: 16px;
  line-height: 1.75;
}

.option-title,
.toggle-row strong,
.input-label,
.field-group legend {
  font-size: 17px;
}

.input-label input,
.input-label select {
  font-size: 16px;
  min-height: 44px;
}

button,
.lang-toggle-btn {
  min-height: 44px;
}

.option-card input,
.toggle-row input {
  width: 20px;
  height: 20px;
}

.option-title {
  padding-right: 24px;
}

.option-card {
  padding: 16px;
}

/* Each choice changes the mechanism shown in the live preview. */
.world-top {
  letter-spacing: 0;
  font-size: 15px;
  overflow-wrap: anywhere;
}

.world-nodes {
  grid-template-columns: minmax(0, 1fr) 24px minmax(0, 1fr);
}

.world-node {
  padding: 12px 6px;
}

.managed-pools .world-node {
  outline: 1px dashed #7d9387;
  outline-offset: 4px;
}

.managed-pools .pool-label {
  display: block;
  position: static;
  margin: 14px 0 0;
  text-align: center;
}

.external-map {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-areas: ". a" "trainer b" "c .";
  align-items: center;
  gap: 24px 18px;
  min-height: 410px;
}

.external-map>svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.external-map path {
  fill: none;
  stroke: #5d8b8c;
  stroke-width: 2;
  stroke-dasharray: 5 5;
}

.external-trainer {
  position: relative;
  grid-area: trainer;
  text-align: center;
}

.external-trainer>small {
  display: block;
  font-size: 14px;
}

.external-cluster {
  position: relative;
  min-width: 0;
}

.external-cluster .world-node {
  border-style: dashed;
}

.cluster-a {
  grid-area: a;
  margin-right: 6px;
  transform: rotate(2deg);
}

.cluster-b {
  grid-area: b;
  transform: rotate(-2deg);
}

.cluster-c {
  grid-area: c;
  margin-left: 25%;
  width: 120%;
}

.external-map .gpu {
  width: 10px;
  height: 13px;
}

.external-map .chips {
  max-width: 90px;
}

.external-map .world-node strong {
  font-size: 15px;
}

.external-map .world-node small {
  font-size: 14px;
}

.diagram-caption {
  font-size: 14px;
  line-height: 1.65;
}

.world-lesson {
  background: #fffdf4e8;
  border: 1px solid #c9d9cd;
  border-radius: 12px;
  margin-top: 22px;
  padding: 18px;
}

.world-lesson h4 {
  font-size: 18px;
  line-height: 1.5;
  margin: 0 0 16px;
}

.world-lesson p {
  font-size: 16px;
  line-height: 1.7;
  margin: 14px 0 0;
}

.world-lesson small {
  display: block;
  font-size: 14px;
  line-height: 1.6;
  margin-top: 8px;
  color: #52655a;
}

.diagram-row {
  display: flex;
  gap: 7px;
  align-items: center;
  flex-wrap: wrap;
  margin: 12px 0;
}

.diagram-chip {
  display: inline-block;
  border: 1px solid #b4bfb1;
  background: #f0eee5;
  border-radius: 6px;
  padding: 6px 9px;
  font-size: 14px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.diagram-chip.blue {
  background: #c4eaf2;
  border-color: #84b0be;
}

.diagram-chip.green {
  background: #d1ebd5;
  border-color: #8caf94;
}

.diagram-chip.yellow {
  background: #ffe591;
  border-color: #b9a044;
}

.diagram-chip.masked {
  background: repeating-linear-gradient(135deg, #e1e2da 0 5px, #f7f7f1 5px 10px);
  color: #526050;
}

.diagram-arrow {
  font-size: 18px;
  color: #628071;
}

.reward-samples {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 4px;
}

.reward-samples .diagram-chip {
  text-align: center;
  padding: 5px 0;
}

.feedback-return {
  border-bottom: 2px dashed #a79b47;
  padding: 10px;
  font-size: 15px;
  text-align: center;
}

.architecture-strip,
.route-demo,
.score-demo,
.cache-hierarchy,
.determinism-demo {
  border-top: 1px solid #d5ddd0;
  padding-top: 12px;
  margin-top: 16px;
}

.schedule-lanes>div {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0;
  align-items: center;
}

.schedule-lanes b {
  font-size: 14px;
  width: 60px;
}

.prefix-tokens {
  margin: 14px 0;
}

.bit-row {
  display: grid;
  grid-template-columns: 65px minmax(0, 1fr) 45px;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  margin: 20px 0;
}

.bit-bar {
  display: flex;
  width: calc(var(--bits) / var(--max-bits, 16) * 100%);
  gap: 1px;
  height: 30px;
}

.bit-bar i {
  flex: 1;
  min-width: 0;
  background: #a4dce6;
  box-shadow: inset 0 0 0 .5px #5c8f9a;
}

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

.hybrid-cache-map>div {
  display: grid;
  gap: 6px;
  padding: 14px;
  border: 1px solid #b7d5d8;
  border-radius: 8px;
  background: #e6f3f4;
  font-size: 16px;
}

.hybrid-cache-map>div+div {
  border-color: #d7cb83;
  background: #fbf4ce;
}

.serving-scene {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.serving-prompt,
.serving-connector,
.serving-transfer {
  text-align: center;
  color: var(--muted);
}

.serving-pool {
  border: 2px solid #80a3ae;
  border-radius: 12px;
  background: #eff8fa;
  padding: 12px;
  min-width: 0;
}

.decode-pool {
  border-color: #8ba885;
  background: #f0f6ed;
}

.serving-pool-label {
  font-size: 15px;
  font-weight: 700;
  padding-bottom: 10px;
}

.serving-stage,
.draft-stage,
.verify-stage,
.commit-stage {
  min-width: 0;
  padding: 12px;
  border: 1px solid #ccdad1;
  border-radius: 8px;
  background: #fffdf7;
  font-size: 16px;
  overflow-wrap: anywhere;
}

.serving-stage h5 {
  margin: 0 0 10px;
  font-size: 17px;
}

.serving-stage p {
  margin: 8px 0;
}

.draft-stage {
  background: #fff3c0;
  border-style: dashed;
  border-color: #b29b3b;
}

.commit-stage {
  background: #e9f4e8;
}

.serving-cache {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 20px minmax(0, 1fr);
  align-items: center;
  gap: 5px;
  margin: 12px 0;
}

.serving-cache[data-hicache=false] {
  grid-template-columns: minmax(0, 1fr);
}

.serving-cache>div {
  display: grid;
  gap: 7px;
  justify-items: center;
  text-align: center;
  padding: 8px;
  background: #e8f3f5;
  border-radius: 8px;
}

.serving-cache>[data-cache-tier=cpu] {
  background: #fff2c3;
}

.serving-connector,
.serving-transfer {
  padding: 10px 0;
}

.serving-transfer {
  display: grid;
  gap: 5px;
  border-block: 1px dashed #a4b8ae;
}

.serving-tokens {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0;
}

.diagram-chip.rejected {
  background: #f8ddda;
  border-color: #c5887e;
}

.world.running [data-serving-phase].active {
  outline: 3px solid #c39819;
  outline-offset: 2px;
}

@media (max-width: 400px) {
  .serving-pool,
  .serving-stage {
    padding: 8px;
  }

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

  .serving-cache>b {
    text-align: center;
    transform: rotate(90deg);
  }
}

.probability-demo>div {
  margin: 12px 0;
  font-size: 15px;
}

.probability-demo i {
  display: block;
  width: var(--prob);
  height: 18px;
  background: #649fac;
  border-radius: 4px;
  margin-top: 4px;
}

.probability-demo>div+div i {
  background: #e0b838;
}

.route-demo>div {
  font-size: 15px;
  margin: 8px 0;
}

.diagram-files {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Full guides and derivations stay in a dismissible reader. */
#learn-dialog {
  max-width: 1000px;
  max-height: 90dvh;
  padding: 28px 40px 40px;
}

.close-dialog {
  position: sticky;
  top: 0;
  z-index: 2;
  min-width: 44px;
  background: var(--paper);
}

.reader-article {
  font-size: 18px;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

.reader-article h1 {
  font-size: 30px;
}

.reader-article h2 {
  font-size: 26px;
  margin-top: 32px;
}

.reader-article h3 {
  font-size: 22px;
}

.reader-article p,
.reader-article li {
  font-size: 18px;
  line-height: 1.85;
}

.reader-article img,
.reader-article svg {
  max-width: 100%;
  height: auto;
}

.reader-article pre {
  font-size: 14px;
  overflow: auto;
  padding: 18px;
  background: #eef1e8;
  border-radius: 8px;
  line-height: 1.7;
}

.reader-article table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 16px;
}

.reader-article th,
.reader-article td {
  padding: 10px;
  border: 1px solid var(--line);
}

.reader-article .math {
  overflow-x: auto;
  max-width: 100%;
}

.reader-article mjx-container[display="true"] {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 8px 0;
}

.reader-article .eqno {
  float: right;
}

.reader-article .admonition,
.reader-summary {
  border-left: 4px solid #689c8b;
  padding: 12px 20px;
  background: #edf2e7;
}

.reader-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.reader-article .highlight {
  position: relative;
}

.reader-article button.copybtn {
  display: none;
}

#mobile-preview {
  display: none;
}

#mobile-preview-dialog {
  padding: 12px;
  width: calc(100% - 16px);
  max-height: 92dvh;
}

#mobile-preview-host {
  clear: both;
  padding-top: 10px;
}

#mobile-preview-host .preview {
  position: static;
}

@media (max-width: 1000px) {
  .preview {
    position: static;
  }
}

@media (max-width: 720px) {
  .core-capabilities {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .core-capabilities article {
    padding: 24px;
  }

  .hero-description {
    font-size: 18px;
  }

  .hero-capabilities {
    font-size: 17px;
  }

  .site-header nav>a[href^="https://github"] {
    display: none;
  }

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

  .steps button {
    font-size: 15px;
    padding: 10px 5px;
  }

  .steps button span {
    display: inline;
    margin-right: 5px;
  }

  .workbench>.preview {
    grid-row: 1;
  }

  #mobile-preview {
    display: block;
    position: fixed;
    bottom: max(18px, env(safe-area-inset-bottom));
    right: 16px;
    z-index: 20;
    border: 1px solid #415e4c;
    border-radius: 28px;
    background: var(--yellow);
    box-shadow: 0 4px 20px #17392330;
    padding: 12px 18px;
    font-size: 16px;
  }

  .step-controls {
    padding-bottom: 60px;
  }

  .toast {
    bottom: 90px;
  }

  .preview-heading {
    flex-wrap: wrap;
  }

  #learn-dialog {
    width: calc(100% - 16px);
    padding: 18px;
  }

  #learn-title {
    font-size: 26px;
    clear: both;
  }

  .reader-article h1,
  .reader-article h2 {
    font-size: 24px;
  }

  .reader-article p,
  .reader-article li {
    font-size: 17px;
  }

  .world {
    padding: 16px 10px;
  }

  .world-lesson {
    padding: 14px;
  }

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

  .option-card {
    padding: 16px;
  }

  .recipe-heading p,
  .advanced-section>div>p {
    font-size: 16px;
  }

  footer {
    padding-bottom: 90px;
  }
}

.core-capabilities .capability-icon {
  width: auto;
  height: auto;
  display: inline-block;
  padding: 5px 12px;
  white-space: nowrap;
  border-radius: 7px;
  font: 600 16px/1.5 monospace;
}

@media (max-width: 720px) {
  .recipe-heading {
    flex-wrap: wrap;
  }

  .recipe-heading>div {
    min-width: 0;
    flex-basis: 100%;
  }
}

.library-teaser>* {
  min-width: 0;
  overflow-wrap: anywhere;
}

@media (max-width: 720px) {
  .library-teaser {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 400px) {
  .library-teaser {
    grid-template-columns: minmax(0, 1fr);
  }
}

#learn-dialog .reader-article h1 {
  font-size: 30px;
  line-height: 1.4;
}

.reader-article span.math {
  display: inline-block;
  vertical-align: middle;
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
}

.reader-article mjx-container {
  max-width: 100%;
}

@media (max-width: 720px) {
  #learn-dialog .reader-article h1 {
    font-size: 24px;
  }
}

.external-map .pd-nodes {
  flex-direction: column;
}

/* One page scroll; compact spacing keeps controls and diagrams together. */
.preview {
  position: static;
  min-width: 0;
}

.builder-panel,
.hero-copy,
.walkthrough-copy,
.recipe-heading>div,
.inputs-grid>* {
  min-width: 0;
}

.recipe-heading {
  flex-wrap: wrap;
}

.recipe-heading>div {
  flex: 1 1 480px;
}

.recipe-source,
.repair-issue {
  color: var(--ink);
}

.artifact-preview {
  border: 1px solid #3d4d41;
  border-radius: 0 0 10px 10px;
  background: #141e19;
}

.artifact-preview>summary {
  padding: 12px 16px;
  cursor: pointer;
  font-size: 16px;
}

.recipe pre {
  max-height: none;
  min-height: 0;
  overflow: visible;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.6;
  border: 0;
}

.reader-article pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.schedule-explorer>summary,
.world-placement>summary,
.resource-options>summary {
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
}

.schedule-explorer[open]>summary,
.world-placement[open]>summary {
  margin-bottom: 12px;
}

.world-placement {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.resource-options {
  padding: 12px;
  margin-block: 14px;
  background: #f4f1df;
  border: 1px solid #e1dcbf;
  border-radius: 10px;
}

.resource-options .resource-card {
  border: 0;
  padding: 0;
  margin-top: 12px;
}

.simulation-status:empty {
  display: none;
}

.steps {
  scroll-margin-top: 12px;
}

.walkthrough-body {
  grid-template-columns: minmax(0, .85fr) minmax(0, 1.4fr);
  grid-template-areas: "copy world" "controls world" "finish world";
  gap: 12px 24px;
}

.walkthrough-copy { grid-area: copy; }
.walkthrough-body>.world { grid-area: world; min-height: 0; }
.walkthrough-controls { grid-area: controls; margin-top: 0; gap: 8px; }
.walkthrough-finish { grid-area: finish; margin-top: 0; gap: 8px; }

@media (min-width: 721px) {
  .site-header {
    height: 72px;
  }

  main,
  .site-header {
    padding-inline: 32px;
  }

  .hero {
    padding: 40px 0;
    min-height: 0;
    gap: 24px;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  }

  .hero h1 {
    font-size: clamp(40px, 4.5vw, 62px);
    margin: 16px 0;
  }

  .hero-description {
    max-width: 660px;
    margin-bottom: 16px;
    font-size: 18px;
  }

  .hero-capabilities {
    margin: 12px 0 20px;
  }

  .core-capabilities {
    gap: 16px;
    padding-bottom: 32px;
  }

  .core-capabilities article {
    padding: 20px 24px;
  }

  .core-capabilities h2 {
    font-size: 26px;
    margin: 12px 0;
  }

  .core-capabilities p {
    font-size: 17px;
    line-height: 1.6;
    margin: 12px 0;
  }

  .capability-flow {
    margin-top: 12px;
  }

  .ecosystem,
  .installation,
  .lab,
  .rl-walkthrough,
  .library-teaser {
    padding-block: 28px 36px;
  }

  .glm-lineage {
    padding-block: 16px;
    margin-bottom: 18px;
  }

  .companion-card {
    padding: 16px 20px;
  }

  .scroll-invitation {
    margin-top: 24px;
    padding-top: 16px;
  }

  .installation {
    grid-template-columns: minmax(0, .65fr) minmax(0, 1.7fr);
    gap: 28px;
  }

  .install-workspace {
    padding: 20px;
  }

  .install-workspace h3 {
    font-size: 20px;
    margin: 14px 0 8px;
  }

  .install-description,
  .install-note {
    margin-block: 10px;
    line-height: 1.6;
  }

  .install-image-control {
    margin-block: 12px;
  }

  .install-terminal {
    margin-block: 12px;
  }

  .install-terminal-bar {
    padding: 6px 12px;
  }

  .install-terminal pre {
    padding: 12px;
    line-height: 1.5;
  }

  .install-next {
    margin-top: 16px;
    padding-top: 12px;
  }

  .lab-heading .eyebrow,
  .walkthrough-heading .eyebrow {
    margin-top: 0;
  }

  .presets {
    margin: 12px 0 16px;
  }

  .comparison,
  .recipe-source {
    padding: 12px 16px;
    margin-block: 14px;
  }

  .steps button {
    padding-block: 10px;
  }

  .workbench {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 16px;
  }

  .builder-panel {
    padding: 20px;
    min-height: 0;
  }

  .step-heading {
    margin-bottom: 16px;
    gap: 12px;
  }

  #step-description,
  .option-description,
  .toggle-row small,
  .input-label small,
  .resource-card p,
  .advice p {
    line-height: 1.5;
  }

  .field-group {
    margin-bottom: 14px;
  }

  .option-card {
    padding: 12px;
  }

  .toggle-row {
    padding-block: 10px;
  }

  .inputs-grid {
    gap: 10px;
  }

  .step-help {
    margin-bottom: 12px;
  }

  .step-controls {
    padding-top: 12px;
  }

  .schedule-explorer,
  .parallel-explorer {
    padding: 12px;
    margin-block: 14px;
  }

  .preview-heading {
    padding: 12px 16px 0;
    flex-wrap: wrap;
  }

  .world {
    padding: 14px 16px 10px;
    min-height: 0;
    container-type: inline-size;
  }

  .world-top {
    margin-bottom: 12px;
  }

  .world-colocate {
    padding: 12px 8px 8px;
  }

  .world-node {
    padding: 8px 6px;
  }

  .world-lesson {
    padding: 12px;
    margin-top: 14px;
  }

  .world-top+.world-lesson {
    margin-top: 0;
  }

  .world-lesson h4 {
    margin-bottom: 10px;
  }

  .world-lesson p {
    margin-top: 10px;
    line-height: 1.5;
  }

  .serving-scene {
    gap: 8px;
  }

  .serving-pool,
  .serving-stage,
  .draft-stage,
  .verify-stage,
  .commit-stage {
    padding: 8px;
  }

  .serving-cache {
    margin: 8px 0;
  }

  .serving-cache>div {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    padding: 6px;
  }

  .serving-connector,
  .serving-transfer {
    padding-block: 6px;
  }

  .summary {
    padding: 10px 16px;
  }

  .summary small {
    display: inline;
    margin-right: 6px;
  }

  .advice {
    padding: 10px 16px;
  }

  .review-link {
    padding: 10px 16px;
  }

  .walkthrough-stages {
    margin-block: 12px;
  }

  .rl-walkthrough {
    padding-block: 20px 24px;
  }

  .rl-walkthrough>p {
    margin-block: 8px;
    font-size: 16px;
  }

  .walkthrough-body>.world {
    padding: 14px;
  }

  .walkthrough-copy h3 {
    margin: 0 0 12px;
  }

  .walkthrough-sample b {
    text-align: center;
  }

  .walkthrough-copy p {
    margin-block: 12px;
    line-height: 1.6;
  }

  .walkthrough-prompt {
    margin-block: 10px;
    padding: 8px;
  }

  .walkthrough-update {
    padding-block: 10px;
  }

  .recipe {
    padding: 24px;
    margin-bottom: 36px;
  }

  .run-guide,
  .artifact-toolbar {
    margin-top: 16px;
  }

  .run-guide li,
  .recipe-footnote {
    line-height: 1.6;
  }

  .advanced-section {
    padding-bottom: 40px;
  }

  .advanced-section>div {
    margin-bottom: 20px;
  }

  .advanced-section summary {
    padding-block: 16px;
  }
}

@container (min-width: 500px) {
  .serving-direction {
    display: inline-block;
    transform: rotate(-90deg);
  }

  .serving-scene[data-pd="true"],
  .combined-pool {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 8px;
    align-items: start;
  }

  .combined-pool {
    display: grid;
  }

  .serving-prompt,
  .combined-pool>.serving-pool-label {
    grid-column: 1 / -1;
  }

  .prefill-pool,
  .combined-pool>.prefill-stage {
    grid-column: 1;
    grid-row: 2;
  }

  .decode-pool,
  .combined-pool>.decode-stage {
    grid-column: 2;
    grid-row: 2;
  }

  .serving-transfer,
  .combined-pool>.serving-connector {
    grid-column: 1 / -1;
    grid-row: 3;
  }

  .serving-transfer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
  }
}

@media (min-width: 1100px) {
  .walkthrough-samples {
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 5px;
  }

  .option-grid.single .option-card {
    display: grid;
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.3fr);
    gap: 10px;
    align-items: center;
  }

  .option-grid.single .option-title {
    padding-right: 0;
  }

  .option-grid.single .option-description {
    margin: 0;
    padding-right: 24px;
  }
}

@media (min-width: 721px) and (max-width: 1000px) {
  .installation {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .walkthrough-body {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "copy" "world" "controls" "finish";
    gap: 16px;
  }

  .recipe-heading>div {
    flex-basis: 100%;
  }
}