:root {
  --paper: #f2f3f5;
  --surface: #ffffff;
  --ink: #313640;
  --ink-soft: #505762;
  --muted: #717984;
  --line: #ccd1d8;
  --steel: #858e9a;
  --slate: #5f6874;
  --primary: #566579;
  --primary-strong: #303743;
  --primary-soft: #dfe4ea;
  --secondary: #7c8798;
  --secondary-strong: #596575;
  --secondary-soft: #e5e8ec;
  --tint-light: #f8f9fa;
  --tint-blue: var(--primary-soft);
  --tint-strong: #cbd3dd;
  --shell: 1180px;
  --font-display: Bahnschrift, "Avenir Next Condensed", "Avenir Next", "Segoe UI Variable Display", sans-serif;
  --font-sans: Bahnschrift, "Avenir Next", "Segoe UI Variable", "Helvetica Neue", sans-serif;
  --font-mono: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  letter-spacing: 0.005em;
  line-height: 1.6;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}

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

button {
  font: inherit;
}

svg {
  display: block;
}

.shell {
  width: min(calc(100% - 56px), var(--shell));
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--surface);
  background: var(--ink);
  border: 2px solid var(--surface);
  border-radius: 2px;
  transform: translateY(-160%);
}

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

:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.site-header.scrolled {
  border-bottom-color: var(--primary);
}

.nav {
  display: flex;
  min-height: 70px;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 720;
  font-stretch: semi-condensed;
  letter-spacing: -0.015em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: none;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  font-weight: 650;
}

.nav-menu > a:not(.nav-github) {
  padding-block: 10px;
  color: var(--ink-soft);
}

.nav-menu > a:not(.nav-github):hover,
.nav-menu > a:not(.nav-github):focus-visible {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 5px;
}

.language-toggle {
  min-width: 44px;
  min-height: 34px;
  padding: 5px 9px;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 720;
  line-height: 1;
}

.language-toggle:hover,
.language-toggle:focus-visible {
  color: var(--ink);
  border-color: var(--ink-muted);
}

.nav-github {
  display: inline-flex;
  min-height: 42px;
  padding: 0 15px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--surface);
  background: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 2px;
}

.nav-github:hover {
  background: var(--primary-strong);
  border-color: var(--primary-strong);
}

.nav-github svg {
  width: 17px;
  fill: currentColor;
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--surface);
  cursor: pointer;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.hero-section {
  color: var(--surface);
  background: var(--primary-strong);
}

.hero {
  display: grid;
  min-height: 700px;
  padding-block: 76px;
  align-items: center;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1fr);
  gap: 56px;
}

.hero h1,
.section-heading h2,
.start-copy h2,
.runtime-heading h2,
.cta-content h2 {
  margin: 0;
  font-family: var(--font-display);
  font-stretch: semi-condensed;
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.hero h1 {
  max-width: 610px;
  font-size: clamp(44px, 4.4vw, 64px);
}

.hero-lede {
  max-width: 590px;
  margin: 28px 0 0;
  color: #dce1e7;
  font-size: 18px;
  line-height: 1.68;
}

.hero-section .button-primary {
  color: var(--primary-strong);
  background: var(--surface);
  border-color: var(--surface);
}

.hero-section .button-primary:hover {
  background: var(--primary-soft);
  border-color: var(--primary-soft);
}

.hero-section .button-secondary {
  color: var(--surface);
  background: transparent;
  border-color: #6f7988;
}

.hero-section .button-secondary:hover {
  background: var(--primary);
  border-color: #929ca9;
}

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

.button {
  display: inline-flex;
  min-height: 50px;
  padding: 0 19px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid var(--primary);
  border-radius: 2px;
  font-size: 14px;
  font-weight: 700;
}

.button svg,
.text-link svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.button-primary {
  color: var(--surface);
  background: var(--primary);
}

.button-primary:hover {
  background: var(--primary-strong);
  border-color: var(--primary-strong);
}

.button-secondary {
  color: var(--ink);
  background: var(--surface);
  border-color: var(--line);
}

.button-secondary:hover {
  border-color: var(--primary);
}

.button-secondary svg {
  fill: none;
  stroke: currentColor;
}

.hero-visual {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  color: #ededed;
  background: #353739;
  border: 1px solid #5c5f62;
  border-radius: 4px;
}

.visual-toolbar {
  display: flex;
  min-height: 48px;
  padding: 10px 18px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: #292b2d;
  border-bottom: 1px solid #4f5255;
  font-family: var(--font-mono);
  font-size: 10px;
}

.visual-toolbar > div {
  display: grid;
  gap: 2px;
}

.toolbar-kicker,
.node-type,
.section-label,
.item-index {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.visual-toolbar strong {
  font-size: 11px;
  font-weight: 600;
}

.run-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #d0d1d2;
  font-weight: 650;
  white-space: nowrap;
}

.run-status i {
  width: 8px;
  height: 8px;
  flex: none;
  background: #b8babc;
  border: 1px solid #d5d6d7;
  border-radius: 50%;
}

.graph-stage {
  position: relative;
  min-height: 430px;
  background-color: #353739;
  background-image: radial-gradient(circle, #55585b 1px, transparent 1px);
  background-size: 24px 24px;
}

.graph-lines {
  position: absolute;
  inset: 0 0 auto;
  width: 100%;
  height: 330px;
  overflow: visible;
}

.graph-lines path {
  fill: none;
  stroke: #a4a7a9;
  stroke-width: 2;
}

.graph-lines .edge-condition {
  stroke: #c9cbcc;
  stroke-width: 2.5;
  stroke-dasharray: 5 5;
}

.graph-lines .edge-loop {
  stroke: #b6b9bb;
}

.edge-label {
  position: absolute;
  z-index: 2;
  padding: 2px 5px;
  color: #e0e1e2;
  background: #292b2d;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 8px;
  font-weight: 700;
  line-height: 1.4;
  white-space: nowrap;
}

.edge-label-condition {
  top: 184px;
  left: 84.3%;
  transform: translateX(-50%);
  color: #e3e4e5;
}

.edge-label-loop {
  top: 184px;
  left: 41%;
  color: #dedfe0;
}

.graph-node {
  position: absolute;
  display: grid;
  width: 22%;
  min-height: 68px;
  padding: 10px 12px;
  align-content: center;
  gap: 3px;
  color: #f2f2f2;
  background: #444648;
  border: 1px solid #707376;
  border-left: 4px solid #afb2b4;
  border-radius: 2px;
}

.graph-node strong,
.graph-end strong,
.runtime-evidence strong {
  font-size: 12px;
  line-height: 1.35;
}

.graph-node .node-type,
.graph-end .node-type {
  color: #cfd1d2;
  font-size: 9px;
  letter-spacing: 0.07em;
}

.node-input {
  top: 95px;
  left: 2.5%;
}

.node-message {
  top: 95px;
  left: 28%;
  border-left-color: #afb2b4;
}

.node-model {
  top: 95px;
  left: 56%;
  border-left-color: #d4d5d6;
}

.node-tool {
  top: 220px;
  left: 56%;
  border-left-color: #9fa2a4;
}

.node-model .node-type {
  color: #dedfe0;
}

.node-tool .node-type {
  color: #d0d2d3;
}

.graph-end {
  position: absolute;
  display: grid;
  top: 104px;
  right: 2.5%;
  width: 12.5%;
  min-height: 50px;
  padding: 8px 10px;
  align-content: center;
  gap: 2px;
  color: #f2f2f2;
  background: #444648;
  border: 1px solid #707376;
  border-left: 4px solid #a4a7a9;
  border-radius: 2px;
}

.runtime-evidence {
  position: absolute;
  right: 16px;
  bottom: 16px;
  left: 16px;
  padding: 10px 12px 12px;
  background: #2b2d2f;
  border: 1px solid #65686b;
  border-radius: 2px;
}

.evidence-heading {
  display: flex;
  margin-bottom: 8px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: #c2c4c5;
  font-family: var(--font-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.07em;
}

.evidence-events {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 8px;
}

.evidence-event {
  display: grid;
  min-width: 0;
  padding: 7px 8px;
  align-items: center;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 7px;
  background: #3b3d3f;
  border-radius: 2px;
}

.evidence-event i {
  width: 7px;
  height: 7px;
  background: #b4b7b9;
  border-radius: 50%;
}

.evidence-event-checkpoint i {
  background: #929597;
}

.evidence-event-checkpoint code,
.evidence-event-checkpoint strong {
  color: #d9dadb;
}

.evidence-event code {
  overflow: hidden;
  color: #dedfe0;
  font-family: var(--font-mono);
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.evidence-event strong {
  overflow: hidden;
  color: #ededed;
  font-size: 9px;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.section {
  padding-block: 76px;
}

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

.section-why {
  background: var(--tint-blue);
}

.section-start {
  background: #faf8f3;
}

.section-runtime {
  background: #eceff3;
}

.section-heading {
  display: grid;
  margin-bottom: 48px;
  align-items: end;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: 64px;
}

.section-title {
  display: grid;
  gap: 14px;
}

.section-heading h2,
.start-copy h2,
.runtime-heading h2 {
  font-size: clamp(38px, 4.2vw, 54px);
}

.section-heading p,
.start-copy > p,
.cta-content p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.7;
}

.principle-list,
.capability-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.principle-item,
.capability-item {
  min-width: 0;
  padding: 24px;
  background: var(--surface);
  border-radius: 4px;
}

.principle-item h3,
.capability-item h3 {
  margin: 18px 0 8px;
  font-family: var(--font-display);
  font-stretch: semi-condensed;
  font-size: 20px;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.principle-item p,
.capability-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.item-index {
  display: inline-flex;
  width: max-content;
  min-height: 24px;
  padding: 3px 7px;
  align-items: center;
  color: var(--primary-strong);
  background: var(--primary-soft);
  border-radius: 2px;
}

.section-label {
  display: inline-flex;
  width: max-content;
  min-height: 26px;
  padding: 4px 9px;
  align-items: center;
  color: var(--primary-strong);
  background: var(--tint-strong);
  border-radius: 2px;
}

.section-start .section-label {
  color: var(--secondary-strong);
  background: var(--secondary-soft);
}

.start-layout {
  display: grid;
  align-items: start;
  grid-template-columns: minmax(0, 0.74fr) minmax(0, 1.26fr);
  gap: 68px;
}

.start-copy {
  padding-top: 14px;
}

.start-copy h2 {
  margin-top: 14px;
}

.start-copy > p {
  margin-top: 24px;
}

.start-list {
  display: grid;
  padding: 24px 0 0;
  margin: 24px 0 28px;
  gap: 11px;
  border-top: 1px solid var(--line);
  list-style: none;
  font-size: 14px;
  font-weight: 650;
}

.start-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.55;
}

.start-list-icon {
  display: grid;
  width: 20px;
  height: 20px;
  margin-top: 1px;
  flex: none;
  color: var(--surface);
  background: var(--secondary);
  border-radius: 50%;
  font-size: 11px;
  place-items: center;
}

.start-list-text {
  min-width: 0;
}

.text-link {
  display: inline-flex;
  padding-bottom: 3px;
  align-items: center;
  gap: 7px;
  border-bottom: 1px solid var(--ink);
  font-size: 14px;
  font-weight: 720;
}

.text-link:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.code-window {
  min-width: 0;
  overflow: hidden;
  color: #dce2e5;
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 4px;
}

.code-toolbar {
  display: flex;
  min-height: 52px;
  padding: 0 16px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: #cbd2d6;
  background: var(--primary-strong);
  border-bottom: 1px solid #4a565c;
  font-family: var(--font-mono);
  font-size: 10px;
}

.copy-button {
  display: inline-flex;
  min-height: 32px;
  padding: 0 9px;
  align-items: center;
  gap: 6px;
  color: #e4e8ea;
  background: #394349;
  border: 1px solid #68747a;
  border-radius: 2px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 9px;
}

.copy-button:hover {
  background: var(--primary);
}

.copy-button svg {
  width: 13px;
  fill: none;
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.code-window pre {
  min-height: 470px;
  padding: 25px 26px;
  margin: 0;
  overflow: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.75;
  tab-size: 2;
}

.code-keyword {
  color: #c9b7d0;
}

.code-name {
  color: #a9c1ce;
}

.code-string {
  color: #b8c8ad;
}

.install-command {
  display: flex;
  min-height: 50px;
  padding: 0 18px;
  align-items: center;
  gap: 10px;
  color: #e4e8ea;
  background: #252931;
  border-top: 1px solid #4a565c;
  font-family: var(--font-mono);
  font-size: 11px;
}

.install-command span {
  color: #aebdc5;
}

.runtime-heading {
  display: grid;
  max-width: 840px;
  margin-bottom: 42px;
  gap: 14px;
}

.capability-list {
  row-gap: 16px;
}

.capability-item {
  min-height: 190px;
}

.capability-item:nth-child(n + 4) {
  padding-top: 24px;
}

.cta-section {
  background: var(--primary-soft);
  border-top: 1px solid var(--line);
}

.cta-content {
  display: grid;
  min-height: 260px;
  padding-block: 56px;
  align-items: center;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 56px;
}

.cta-content h2 {
  font-size: clamp(36px, 4vw, 50px);
}

.cta-content p {
  max-width: 700px;
  margin-top: 14px;
  font-size: 16px;
}

.site-footer {
  background: var(--surface);
}

.footer-main {
  display: grid;
  min-height: 150px;
  padding-block: 34px;
  align-items: center;
  grid-template-columns: 1fr auto;
  gap: 48px;
}

.brand-footer {
  color: var(--ink);
}

.footer-main p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.footer-links {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 24px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 620;
}

.footer-links a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-bottom {
  display: flex;
  min-height: 56px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

@media (max-width: 1099px) {
  .hero {
    min-height: auto;
    padding-block: 68px;
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 820px;
  }

  .hero-visual {
    width: 100%;
    max-width: 760px;
  }

  .start-layout {
    grid-template-columns: 1fr;
  }

  .start-copy {
    max-width: 720px;
  }
}

@media (max-width: 860px) {
  .shell {
    width: min(calc(100% - 40px), var(--shell));
  }

  .nav {
    position: relative;
    min-height: 64px;
  }

  .menu-ready .menu-button {
    display: block;
  }

  .nav-menu {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .menu-ready .nav-menu {
    position: absolute;
    top: 63px;
    right: 0;
    left: 0;
    display: none;
    padding: 14px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-top: 0;
  }

  .menu-ready .nav-menu.open {
    display: flex;
  }

  .nav-menu > a:not(.nav-github),
  .nav-github,
  .language-toggle {
    width: 100%;
  }

  .nav-menu > a:not(.nav-github) {
    padding: 9px 4px;
  }

  .language-toggle {
    min-height: 40px;
    text-align: left;
    border-radius: 2px;
  }

  .menu-button[aria-expanded="true"] span:first-child {
    transform: translateY(3.5px) rotate(45deg);
  }

  .menu-button[aria-expanded="true"] span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .hero {
    padding-block: 54px 64px;
    gap: 44px;
  }

  .hero h1 {
    font-size: clamp(42px, 10.5vw, 56px);
  }

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

  .section {
    padding-block: 64px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .principle-list,
  .capability-list {
    grid-template-columns: 1fr;
  }

  .principle-item,
  .principle-item:not(:first-child),
  .capability-item,
  .capability-item:not(:nth-child(3n + 1)) {
    min-height: 0;
    padding: 24px;
    border-left: 0;
  }

  .principle-item:not(:first-child),
  .capability-item:not(:first-child),
  .capability-item:nth-child(n + 4) {
    border-top: 0;
  }

  .code-window pre {
    min-height: 0;
    padding: 22px 20px;
  }

  .cta-content,
  .footer-main {
    grid-template-columns: 1fr;
  }

  .cta-content {
    gap: 28px;
  }

  .cta-content .button {
    justify-self: start;
  }

  .footer-main {
    gap: 24px;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 620px) {
  .graph-stage {
    min-height: 590px;
  }

  .graph-lines {
    display: none;
  }

  .graph-node {
    right: 18px;
    left: 18px;
    width: auto;
    min-height: 70px;
  }

  .node-input {
    top: 20px;
  }

  .node-message {
    display: none;
  }

  .node-model {
    top: 120px;
  }

  .node-tool {
    top: 246px;
  }

  .graph-end {
    top: 372px;
    right: 18px;
    left: 18px;
    width: auto;
  }

  .edge-label-condition {
    top: 218px;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
  }

  .edge-label-loop {
    top: 328px;
    right: 18px;
    left: auto;
  }

  .runtime-evidence {
    right: 18px;
    bottom: 18px;
    left: 18px;
  }

  .evidence-events {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 479px) {
  .shell {
    width: min(calc(100% - 36px), var(--shell));
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .visual-toolbar {
    padding-inline: 12px;
  }

  .section-heading h2,
  .start-copy h2,
  .runtime-heading h2 {
    font-size: 38px;
  }

  .code-window {
    margin-inline: -18px;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }

  .install-command {
    overflow-x: auto;
    white-space: nowrap;
  }

  .cta-content .button {
    justify-self: stretch;
  }

  .footer-bottom {
    padding-block: 16px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}

html[lang="zh-CN"] {
  --font-display: "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  --font-sans: "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}

html[lang="zh-CN"] body {
  letter-spacing: 0;
}

html[lang="zh-CN"] .nav-menu {
  gap: 22px;
}

html[lang="zh-CN"] .hero h1,
html[lang="zh-CN"] .section-heading h2,
html[lang="zh-CN"] .start-copy h2,
html[lang="zh-CN"] .runtime-heading h2,
html[lang="zh-CN"] .cta-content h2 {
  font-stretch: normal;
  letter-spacing: -0.015em;
  line-height: 1.18;
  text-wrap: balance;
}

html[lang="zh-CN"] .hero h1 {
  max-width: 10.5em;
  font-size: clamp(42px, 4vw, 58px);
}

html[lang="zh-CN"] .section-heading h2,
html[lang="zh-CN"] .start-copy h2,
html[lang="zh-CN"] .runtime-heading h2 {
  font-size: clamp(36px, 3.8vw, 50px);
}

html[lang="zh-CN"] .principle-item h3,
html[lang="zh-CN"] .capability-item h3 {
  font-stretch: normal;
  letter-spacing: 0;
  line-height: 1.45;
}

@media (max-width: 860px) {
  html[lang="zh-CN"] .nav-menu {
    gap: 6px;
  }
}

@media (max-width: 479px) {
  html[lang="zh-CN"] .hero h1 {
    font-size: 40px;
  }

  html[lang="zh-CN"] .section-heading h2,
  html[lang="zh-CN"] .start-copy h2,
  html[lang="zh-CN"] .runtime-heading h2 {
    font-size: 34px;
  }
}