:root {
  color-scheme: light;
  --neutral-0: #ffffff;
  --neutral-100: #f5f5f5;
  --neutral-200: #e5e5e5;
  --neutral-500: #737373;
  --neutral-900: #171717;
  --content-width: 896px;
  --shell-width: 1128px;
  font-family: "SF Pro Text", "SF Pro Display", -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: geometricPrecision;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

html.demo-controlled-scroll {
  scroll-behavior: auto !important;
}

body {
  --dock-clearance: 0px;
  min-width: 320px;
  margin: 0;
  color: var(--neutral-900);
  background: var(--neutral-0);
  -webkit-font-smoothing: antialiased;
}

body.toolbar-docked {
  --dock-clearance: 80px;
}

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

button {
  color: inherit;
  font: inherit;
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 40px;
  left: 0;
  width: 100%;
  padding: 0 24px;
  transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.nav-shell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  width: min(100%, var(--shell-width));
  height: 56px;
  margin: 0 auto;
  padding: 8px 8px 8px 16px;
  border-radius: 999px;
  isolation: isolate;
  transition: width 420ms cubic-bezier(0.32, 0.72, 0, 1), padding-left 420ms cubic-bezier(0.32, 0.72, 0, 1);
  will-change: width;
}

.site-header.is-compact .nav-shell {
  width: 148px;
  padding-left: 8px;
}

.nav-shell::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  border-radius: inherit;
  background: rgb(229 229 229 / 56%);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  content: "";
  opacity: 0;
  transition: opacity 360ms cubic-bezier(0.32, 0.72, 0, 1);
}

.site-header.is-scrolled .nav-shell::before {
  opacity: 1;
}

.site-header.is-compact .nav-shell::before {
  opacity: 0;
}

.brand {
  position: absolute;
  left: 16px;
  display: flex;
  gap: 8px;
  align-items: center;
  color: inherit;
  text-decoration: none;
  transform-origin: left center;
  transition: opacity 240ms ease, transform 360ms cubic-bezier(0.32, 0.72, 0, 1), visibility 0s linear;
}

.site-header.is-compact .brand {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px) scale(0.96);
  transition: opacity 240ms ease, transform 360ms cubic-bezier(0.32, 0.72, 0, 1), visibility 0s linear 240ms;
  visibility: hidden;
}

.brand img,
.feature-icon {
  display: block;
  flex: none;
}

.install-button {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: max-content;
  min-width: 132px;
  max-width: 100%;
  height: 40px;
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--neutral-900);
  background: var(--neutral-200);
  font-family: "PingFang SC", "SF Pro Text", -apple-system, sans-serif;
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
  white-space: nowrap;
  text-decoration: none;
  transition: color 240ms ease, background-color 240ms ease, box-shadow 240ms ease, transform 160ms ease;
}

.site-header.is-compact .install-button {
  color: var(--neutral-0);
  background: var(--neutral-900);
  box-shadow: 0 8px 24px rgb(0 0 0 / 16%);
  font-weight: 600;
}

.install-button:hover {
  background: rgb(212 212 212 / 72%);
}

.site-header.is-compact .install-button:hover {
  background: #2b2b2b;
}

.install-button:active {
  transform: scale(0.98);
}

.page-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(100%, var(--shell-width));
  margin: 0 auto;
  padding: 92px 24px 0;
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: min(100%, var(--content-width));
  padding: 168px 0;
  gap: 104px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
  transform-origin: center center;
  transition: transform 1s cubic-bezier(0.22, 1, 0.36, 1), opacity 1s ease;
}

body.demo-act2 .hero-copy {
  opacity: 0.4;
  transform: translateY(-28px);
}

.hero h1 {
  margin: 0;
  color: var(--neutral-900);
  font-family: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 64px;
  font-weight: 510;
  letter-spacing: 4px;
  line-height: 72px;
}

.hero-copy p {
  width: min(100%, 656px);
  margin: 0;
  color: var(--neutral-500);
  font-family: "PingFang SC", "SF Pro Text", -apple-system, sans-serif;
  font-size: 20px;
  font-weight: 400;
  line-height: 28px;
}

.toolbar-dock {
  position: relative;
  display: flex;
  justify-content: center;
  width: 100%;
  height: 48px;
}

.demo-cursor {
  position: fixed;
  z-index: 1001;
  top: 0;
  left: 0;
  width: 22px;
  height: 22px;
  opacity: 0;
  pointer-events: none;
  transform: translate3d(-40px, -40px, 0);
  transition: opacity 300ms ease;
  will-change: transform, opacity;
}

.demo-cursor svg {
  display: block;
  width: 22px;
  height: 22px;
  overflow: visible;
  filter: drop-shadow(0 1px 3px rgb(0 0 0 / 35%)) drop-shadow(0 0 1px rgb(255 255 255 / 90%));
  transform: scale(1);
  transform-origin: 2px 2px;
  transition: transform 120ms ease;
}

.demo-cursor path {
  fill: var(--neutral-900);
  stroke: var(--neutral-0);
  stroke-linejoin: round;
  stroke-width: 2.4px;
}

.demo-cursor-ring {
  position: absolute;
  top: -4px;
  left: -4px;
  width: 12px;
  height: 12px;
  border: 2px solid rgb(13 153 255 / 85%);
  border-radius: 50%;
  opacity: 0;
  transform: scale(0.6);
}

.demo-cursor.is-visible {
  opacity: 1;
}

.demo-cursor.is-pressed svg {
  transform: scale(0.82);
}

.demo-cursor.is-rippling .demo-cursor-ring {
  animation: demo-cursor-ring 450ms ease-out;
}

.inspect-guide {
  position: fixed;
  z-index: 2147483648;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.inspect-guide-bubble {
  position: absolute;
  bottom: 12px;
  left: 50%;
  padding: 8px 11px;
  border-radius: 8px;
  color: var(--neutral-0);
  background: var(--neutral-900);
  box-shadow: 0 6px 20px rgb(0 0 0 / 22%);
  font-size: 12px;
  font-weight: 500;
  line-height: 16px;
  opacity: 0;
  transform: translate(-50%, 7px) scale(0.96);
  transform-origin: center bottom;
  transition: opacity 180ms ease, transform 260ms cubic-bezier(0.32, 0.72, 0, 1);
  white-space: nowrap;
}

.inspect-guide-bubble::after {
  position: absolute;
  top: 100%;
  left: 50%;
  width: 0;
  height: 0;
  border-top: 5px solid var(--neutral-900);
  border-right: 5px solid transparent;
  border-left: 5px solid transparent;
  content: "";
  transform: translateX(-50%);
}

.inspect-guide-ring {
  position: absolute;
  top: -5px;
  left: -21px;
  width: 42px;
  height: 42px;
  border: 2px solid rgb(23 23 23 / 70%);
  border-radius: 11px;
  opacity: 0;
}

.inspect-guide.is-visible .inspect-guide-bubble {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
}

.inspect-guide.is-left .inspect-guide-bubble {
  left: 0;
  transform-origin: left bottom;
  transform: translate(0, 7px) scale(0.96);
}

.inspect-guide.is-right .inspect-guide-bubble {
  right: 0;
  left: auto;
  transform-origin: right bottom;
  transform: translate(0, 7px) scale(0.96);
}

.inspect-guide.is-below .inspect-guide-bubble {
  top: 12px;
  bottom: auto;
  transform-origin: center top;
  transform: translate(-50%, -7px) scale(0.96);
}

.inspect-guide.is-left.is-below .inspect-guide-bubble {
  transform-origin: left top;
  transform: translate(0, -7px) scale(0.96);
}

.inspect-guide.is-right.is-below .inspect-guide-bubble {
  transform-origin: right top;
  transform: translate(0, -7px) scale(0.96);
}

.inspect-guide.is-visible.is-left .inspect-guide-bubble,
.inspect-guide.is-visible.is-right .inspect-guide-bubble,
.inspect-guide.is-visible.is-below .inspect-guide-bubble {
  transform: translate(0, 0) scale(1);
}

.inspect-guide.is-visible:not(.is-left):not(.is-right):not(.is-below):not(.is-toolbar-mobile) .inspect-guide-bubble {
  transform: translate(-50%, 0) scale(1);
}

.inspect-guide.is-toolbar-mobile .inspect-guide-bubble {
  right: auto;
  bottom: 12px;
  left: -16px;
  transform: translateY(7px) scale(0.96);
  transform-origin: 16px bottom;
}

.inspect-guide.is-toolbar-mobile .inspect-guide-bubble::after {
  left: 16px;
}

.inspect-guide.is-visible.is-toolbar-mobile .inspect-guide-bubble {
  transform: translateY(0) scale(1);
}

.inspect-guide.is-visible .inspect-guide-ring {
  animation: inspect-guide-pulse 1.8s cubic-bezier(0.32, 0.72, 0, 1) infinite;
}

.demo-stop-guide {
  position: fixed;
  z-index: 2147483648;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.demo-stop-guide-bubble {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 8px 11px;
  border: 0;
  border-radius: 8px;
  color: var(--neutral-0);
  background: var(--neutral-900);
  box-shadow: 0 6px 20px rgb(0 0 0 / 22%);
  font-size: 12px;
  font-weight: 500;
  line-height: 16px;
  opacity: 0;
  transform: translateY(6px) scale(0.97);
  transform-origin: top left;
  transition: opacity 140ms ease, transform 200ms cubic-bezier(0.22, 1, 0.36, 1);
  white-space: nowrap;
  pointer-events: auto;
  cursor: pointer;
  font-family: inherit;
}

.demo-stop-guide-bubble:active {
  transform: translateY(0) scale(0.97);
}

.demo-stop-guide.is-left .demo-stop-guide-bubble {
  right: 16px;
  left: auto;
  transform-origin: top right;
}

.demo-stop-guide.is-above .demo-stop-guide-bubble {
  top: auto;
  bottom: 16px;
  transform: translateY(-6px) scale(0.97);
  transform-origin: bottom left;
}

.demo-stop-guide.is-left.is-above .demo-stop-guide-bubble {
  transform-origin: bottom right;
}

.demo-stop-guide.is-visible .demo-stop-guide-bubble {
  opacity: 1;
  transform: translateY(0) scale(1);
}

@keyframes demo-cursor-ring {
  0% {
    opacity: 0.9;
    transform: scale(0.6);
  }

  100% {
    opacity: 0;
    transform: scale(3.4);
  }
}

@keyframes inspect-guide-pulse {
  0% {
    opacity: 0;
    transform: scale(0.82);
  }

  18% {
    opacity: 0.72;
  }

  76%,
  100% {
    opacity: 0;
    transform: scale(1.34);
  }
}

body.inspecting {
  cursor: crosshair;
}

.hero-copy {
  animation: rise-in 700ms 50ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.toolbar-dock {
  animation: fade-in 700ms 250ms ease both;
}

.features {
  animation: rise-in 700ms 350ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.site-footer {
  animation: fade-in 700ms 500ms ease both;
}

body.entered .hero-copy,
body.entered .toolbar-dock,
body.entered .features,
body.entered .site-footer {
  animation: none;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

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

@keyframes fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.install-button:focus-visible,
.site-footer a:focus-visible {
  outline: 2px solid var(--neutral-900);
  outline-offset: 2px;
}

.features {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: min(100%, var(--content-width));
  gap: 32px;
}

.features h2 {
  margin: 0;
  font-family: "PingFang SC", "SF Pro Text", -apple-system, sans-serif;
  font-size: 16px;
  font-weight: 500;
  line-height: 20px;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  width: 100%;
}

.feature-row {
  display: grid;
  grid-template-columns: 20px max-content 1fr max-content;
  gap: 12px;
  align-items: center;
  min-height: 26px;
  font-family: "PingFang SC", "SF Pro Text", -apple-system, sans-serif;
}

.feature-row h3,
.feature-row p {
  margin: 0;
  font-size: 14px;
  line-height: 20px;
  white-space: nowrap;
}

.feature-row h3 {
  font-weight: 500;
}

.feature-row p {
  min-width: 0;
  overflow: hidden;
  color: var(--neutral-500);
  font-weight: 400;
  text-overflow: ellipsis;
  text-transform: lowercase;
}

.feature-row kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 26px;
  padding: 4px 8px;
  border: 1px solid var(--neutral-200);
  border-radius: 4px;
  color: var(--neutral-900);
  background: linear-gradient(to bottom, var(--neutral-0) 52.4%, var(--neutral-100));
  box-shadow: none;
  font-family: "SFMono-Regular", "Geist Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 12px;
  font-weight: 400;
  line-height: 16px;
}

.sub-row .feature-icon {
  visibility: hidden;
}

.site-footer {
  display: flex;
  align-items: center;
  gap: 32px;
  width: min(100%, var(--content-width));
  padding: 112px 0 calc(72px + var(--dock-clearance));
  font-family: "PingFang SC", "SF Pro Text", -apple-system, sans-serif;
  font-size: 16px;
  line-height: 22px;
  transition: padding-bottom 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.site-footer a {
  color: var(--neutral-500);
  text-decoration: none;
  transition: color 140ms ease;
}

.site-footer a:hover {
  color: var(--neutral-900);
}

.legal-page {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  width: min(100%, var(--shell-width));
  margin: 0 auto;
  padding: 220px 24px 0;
}

.legal-content {
  width: min(100%, 720px);
  margin: 0 auto;
  animation: rise-in 700ms 50ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.legal-content h1 {
  margin: 0 0 56px;
  font-family: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 48px;
  font-weight: 540;
  letter-spacing: -1.2px;
  line-height: 56px;
}

.legal-copy {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.legal-copy p {
  margin: 0;
  color: #4f4f4f;
  font-size: 18px;
  line-height: 30px;
}

.legal-copy code {
  padding: 2px 5px;
  border-radius: 4px;
  color: var(--neutral-900);
  background: var(--neutral-100);
  font-family: "SFMono-Regular", "Geist Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.88em;
}

.content-article h1 {
  max-width: 680px;
}

.content-kicker {
  margin: 0 0 16px;
  color: var(--neutral-500);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 20px;
  text-transform: uppercase;
}

.content-copy {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.content-section,
.release-entry {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.content-section h2,
.release-entry h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 550;
  letter-spacing: -0.2px;
  line-height: 28px;
}

.content-section p,
.content-section li,
.release-entry li {
  margin: 0;
  color: #4f4f4f;
  font-size: 17px;
  line-height: 29px;
}

.content-section p a {
  color: var(--neutral-900);
  text-decoration-color: var(--neutral-500);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-color 140ms ease;
}

.content-section p a:hover {
  text-decoration-color: var(--neutral-900);
}

.content-section ol,
.content-section ul,
.release-entry ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0;
  padding-left: 22px;
}

.content-section code,
.command-list code {
  padding: 2px 5px;
  border-radius: 4px;
  color: var(--neutral-900);
  background: var(--neutral-100);
  font-family: "SFMono-Regular", "Geist Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.88em;
}

.command-list {
  display: flex;
  flex-direction: column;
  margin: 0;
  border-top: 1px solid var(--neutral-200);
}

.command-list div {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 16px;
  align-items: center;
  min-height: 52px;
  border-bottom: 1px solid var(--neutral-200);
}

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

.command-list code {
  white-space: nowrap;
}

.command-list.feedback-commands div {
  grid-template-columns: 132px minmax(0, 1fr);
}

.command-list dd {
  color: #4f4f4f;
  font-size: 15px;
  line-height: 22px;
}

.release-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--neutral-200);
}

.release-meta span {
  color: var(--neutral-500);
  font-size: 14px;
  line-height: 20px;
  white-space: nowrap;
}

.legal-page .site-footer {
  width: min(100%, 720px);
  margin: auto auto 0;
}

.site-footer a[aria-current="page"] {
  color: var(--neutral-900);
}

@media (max-width: 760px) {
  .site-header {
    top: 16px;
    padding: 0 16px;
  }

  .page-wrap {
    padding: 68px 20px 0;
  }

  .hero {
    padding: 112px 0 104px;
    gap: 72px;
  }

  .hero h1 {
    font-size: clamp(38px, 10.5vw, 50px);
    font-weight: 540;
    letter-spacing: 0.5px;
    line-height: 1.08;
  }

  .hero-copy {
    gap: 20px;
  }

  .hero-copy p {
    max-width: 520px;
    font-size: 17px;
    line-height: 26px;
  }

  .desktop-break {
    display: none;
  }

  .features {
    gap: 28px;
  }

  .feature-list {
    gap: 22px;
  }

  .feature-row {
    grid-template-columns: 20px 1fr max-content;
    align-items: start;
    column-gap: 12px;
    row-gap: 4px;
  }

  .feature-row h3 {
    white-space: normal;
  }

  .feature-row p {
    grid-column: 2 / 3;
    white-space: normal;
  }

  .feature-row kbd {
    grid-column: 3;
    grid-row: 1 / 3;
  }

  .site-footer {
    flex-wrap: wrap;
    gap: 18px 28px;
    padding: 88px 0 calc(48px + var(--dock-clearance));
    font-size: 15px;
  }

  .legal-page {
    padding: 156px 20px 0;
  }

  .legal-content h1 {
    margin-bottom: 40px;
    font-size: 40px;
    letter-spacing: -0.8px;
    line-height: 46px;
  }

  .legal-copy {
    gap: 20px;
  }

  .legal-copy p {
    font-size: 16px;
    line-height: 27px;
  }

  .content-copy {
    gap: 40px;
  }

  .content-section p,
  .content-section li,
  .release-entry li {
    font-size: 16px;
    line-height: 27px;
  }

  .command-list div {
    grid-template-columns: 72px 1fr;
  }

  .release-meta {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .demo-cursor {
    display: none;
  }

  .demo-stop-guide {
    display: none;
  }

  .inspect-guide.is-visible .inspect-guide-ring {
    animation: none;
    opacity: 0.45;
  }

  .hero-copy,
  .toolbar-dock,
  .features,
  .site-footer,
  .legal-content {
    animation: none;
  }
}

/* Language controls share the navigation's compact pill layout. */
.nav-actions { display: flex; align-items: center; gap: 8px; }
.language-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 44px; height: 40px; padding: 0 8px;
  border: 0; border-radius: 999px; background: transparent;
  font-size: 13px; font-weight: 500; white-space: nowrap; cursor: pointer;
}
.language-toggle[hidden] { display: none; }
.language-toggle:focus-visible, .install-button:focus-visible {
  outline: 2px solid #335cff; outline-offset: 3px;
}
.language-toggle:active { background: #d4d4d4; }
@media (hover: hover) { .language-toggle:hover { background: #e5e5e5; } }
.site-header.is-compact .language-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  transform: translateX(8px) scale(.92);
  visibility: hidden;
}
.language-toggle { transition: opacity 180ms ease, transform 260ms cubic-bezier(.32,.72,0,1), background-color 160ms ease, visibility 0s linear 0s; }
.site-header.is-compact .nav-actions { justify-content: center; }
.site-header.is-compact .install-button { margin-inline: auto; }
html:lang(zh-CN) .hero h1 { line-height: 1.2; letter-spacing: -1px; }
html:lang(zh-CN) .hero-copy p { max-width: 560px; line-height: 1.7; }
html:lang(zh-CN) .legal-content h1 { line-height: 1.25; }
@media (max-width: 480px) {
  .nav-shell { padding-left: 8px; }
  .site-header.is-compact .nav-shell { width: 148px; min-width: 148px; padding: 8px; }
  .brand { left: 8px; gap: 6px; }
  .brand img:last-child { width: 60px; height: 20px; }
  .nav-actions { gap: 2px; }
  .nav-actions .install-button { min-width: 0; padding-inline: 10px; font-size: 12px; }
  .language-toggle { padding-inline: 4px; }
}