:root {
  color-scheme: light;
  --bg: #fff;
  --ink: #18354d;
  --muted: #587086;
  --line: #dce7ef;
  --wash: #edf7ff;
  --surface: #f7fafc;
  --blue: #087de0;
  --button: #087de0;
  --yellow: #f4c94d;
  --shadow: 0 18px 45px #17365317;
  font-family:
    Inter,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    'PingFang SC',
    'Microsoft YaHei',
    sans-serif;
  font-synthesis: none;
}
:root[data-theme='dark'] {
  color-scheme: dark;
  --bg: #10212f;
  --ink: #e7f1f8;
  --muted: #adc1d2;
  --line: #304554;
  --wash: #193549;
  --surface: #172b3b;
  --blue: #64baff;
  --button: #126db5;
  --shadow: 0 18px 45px #0003;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 28px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
}
button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
button:disabled {
  cursor: wait;
  opacity: 0.6;
}
button {
  color: inherit;
}
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 5px;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.045em;
}
h1 {
  font-size: clamp(44px, 5.4vw, 76px);
  font-weight: 760;
}
h2 {
  font-size: clamp(30px, 3vw, 44px);
  font-weight: 730;
}
h3 {
  font-size: 22px;
  font-weight: 700;
}
em {
  font-style: normal;
  color: var(--blue);
}
p {
  color: var(--muted);
}
.container {
  width: min(1280px, calc(100% - 96px));
  margin: auto;
}
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  padding: 12px;
  background: var(--bg);
  z-index: 10;
}
.skip-link:focus {
  top: 10px;
}
.header {
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  font-size: 23px;
  font-weight: 740;
  white-space: nowrap;
  letter-spacing: -0.035em;
}
.brand img {
  width: 40px;
  height: 40px;
}
.header-right,
.nav,
.controls {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav {
  font-size: 15px;
  font-weight: 620;
}
.nav a:hover,
.footer a:hover {
  color: var(--blue);
}
.nav a[aria-current='page'] {
  color: var(--blue);
}
.controls {
  gap: 12px;
  padding-left: 24px;
  border-left: 1px solid var(--line);
}
.language {
  font-size: 14px;
  font-weight: 700;
}
.theme {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: transparent;
  border: 0;
  border-radius: 50%;
}
.theme:hover {
  background: var(--wash);
}
.theme svg {
  width: 23px;
  height: 23px;
}
.moon,
:root[data-theme='dark'] .sun {
  display: none;
}
:root[data-theme='dark'] .moon {
  display: block;
}
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 46px;
  align-items: center;
  padding: 20px 0 56px;
}
.hero-copy {
  padding: 35px 0;
}
.hero-copy > p {
  font-size: 20px;
  max-width: 550px;
  margin-top: 28px;
  line-height: 1.8;
}
.actions {
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 32px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 50px;
  padding: 12px 23px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: var(--button);
  color: #fff;
  font-weight: 650;
  line-height: 1.5;
  transition:
    transform 0.18s,
    background 0.18s;
}
.button:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
}
.button.secondary {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--line);
}
.text-link {
  color: var(--blue);
  font-weight: 650;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}
.arrow {
  font-size: 24px;
  font-weight: 400;
  line-height: 1;
}
.hero-copy .compatibility {
  font-size: 13px;
  margin-top: 20px;
}
.hero-stage {
  position: relative;
  background: var(--wash);
  border-radius: 16px;
  padding: 30px 28px 22px;
  overflow: hidden;
  text-align: center;
}
.hero-stage:before {
  content: '';
  position: absolute;
  width: 196px;
  height: 196px;
  border-radius: 50%;
  background: var(--yellow);
  top: 24%;
  left: 6%;
}
.panel-shot {
  position: relative;
  width: 298px;
  border: 1px solid #cbd6df;
  border-radius: 9px;
  box-shadow: var(--shadow);
  margin: 0 auto 22px;
  background: #fff;
}
.scene-buttons {
  position: relative;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 5px;
}
.scene-button {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  padding: 7px 12px;
  border-radius: 25px;
  font-size: 12px;
  font-weight: 650;
}
.scene-button[aria-pressed='true'] {
  background: var(--bg);
  border-color: var(--line);
  color: var(--ink);
}
.scene-button:hover {
  color: var(--blue);
}
.scene-caption {
  position: relative;
  font-size: 12px;
  margin: 12px 0 0;
  min-height: 20px;
}
.examples-note {
  position: relative;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
  margin: 8px 0 0;
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 16px 0 62px;
  gap: 35px;
}
.step + .step {
  border-left: 1px solid var(--line);
  padding-left: 35px;
}
.step-number {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--yellow);
  color: #18354d;
  border-radius: 50%;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
}
.step p {
  margin-top: 12px;
  max-width: 310px;
}
.details {
  padding: 58px 0 65px;
  border-top: 1px solid var(--line);
}
.detail-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
  margin-top: 32px;
}
.detail-list h3 {
  font-size: 17px;
  letter-spacing: 0;
}
.detail-list p {
  font-size: 15px;
  margin-top: 10px;
  max-width: 320px;
}
.binding {
  background: var(--wash);
  border-radius: 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: start;
  gap: 48px;
  padding: 44px 48px;
}
.binding-intro {
  margin-top: 20px;
  max-width: 400px;
}
.binding-content {
  min-width: 0;
}
.binding-mode + .binding-mode {
  margin-top: 24px;
}
.binding-mode h3 {
  font-size: 19px;
  letter-spacing: 0;
}
.binding-mode p {
  margin-top: 10px;
  font-size: 15px;
}
.binding-faq,
.manual-install {
  margin-top: 24px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  font-size: 14px;
}
.binding-faq summary,
.manual-install summary {
  cursor: pointer;
  color: var(--blue);
  font-weight: 650;
}
.binding-faq p,
.manual-install p {
  margin-top: 14px;
}
.install {
  padding: 76px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}
.install-note {
  font-size: 14px;
  margin: 18px 0;
  max-width: 440px;
}
.install ol {
  padding-left: 24px;
  margin: 0;
}
.install li {
  padding: 0 0 17px 8px;
  color: var(--muted);
}
.install li::marker {
  color: var(--blue);
  font-weight: 700;
}
.boundaries {
  font-size: 13px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
  margin-top: 10px;
}
.footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 38px;
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: center;
}
.footer .brand {
  font-size: 18px;
}
.footer .brand img {
  width: 32px;
  height: 32px;
}
.footer p {
  font-size: 12px;
  margin: 8px 0 0 45px;
}
.footer-right {
  text-align: right;
}
.footer-links {
  display: flex;
  gap: 24px;
  font-size: 13px;
  color: var(--muted);
}
.footer-right p {
  margin-left: 0;
}
.page-heading {
  padding: 55px 0 42px;
  max-width: 850px;
}
.page-heading h1 {
  font-size: clamp(38px, 4.5vw, 60px);
}
.page-heading p {
  font-size: 18px;
  margin-top: 20px;
  max-width: 690px;
}
.policy-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 760px);
  gap: 65px;
  padding-bottom: 76px;
}
.policy-toc {
  align-self: start;
  position: sticky;
  top: 25px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 13px;
  color: var(--muted);
  padding-top: 6px;
}
.policy-toc a:hover {
  color: var(--blue);
}
.policy-body {
  font-size: 16px;
  line-height: 1.9;
}
.policy-body h2 {
  font-size: 26px;
  margin: 42px 0 20px;
}
.policy-body p {
  margin: 0 0 20px;
}
.policy-body ul {
  padding-left: 20px;
  margin: 0 0 24px;
  color: var(--muted);
}
.policy-body li {
  margin: 12px 0;
}
.policy-body a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.policy-meta {
  font-size: 13px !important;
}
.not-found {
  padding: 90px 0 180px;
}
.not-found h1 {
  max-width: 700px;
}
.not-found a {
  margin-top: 30px;
}
@media (min-width: 1450px) {
  .hero {
    gap: 65px;
  }
  .hero-stage {
    padding-top: 36px;
  }
  .panel-shot {
    width: 318px;
  }
}
@media (max-width: 1080px) {
  .container {
    width: calc(100% - 56px);
  }
  .nav,
  .header-right {
    gap: 20px;
  }
  .brand {
    font-size: 19px;
  }
  .hero {
    gap: 25px;
  }
  h1 {
    font-size: 54px;
  }
  .hero-copy > p {
    font-size: 17px;
  }
  .hero-copy .actions {
    gap: 18px;
  }
  .panel-shot {
    width: 260px;
  }
  .header .brand img {
    width: 34px;
    height: 34px;
  }
  .binding {
    padding: 35px;
    gap: 32px;
  }
  .policy-layout {
    gap: 35px;
  }
}
@media (max-width: 760px) {
  .container {
    width: calc(100% - 36px);
  }
  .header {
    min-height: 116px;
    position: relative;
    align-items: flex-start;
    padding-top: 20px;
    gap: 12px;
  }
  .brand {
    font-size: 18px;
    gap: 9px;
  }
  .header-right {
    gap: 0;
  }
  .controls {
    border: 0;
    padding: 0;
    gap: 8px;
  }
  .nav {
    position: absolute;
    left: 0;
    bottom: 17px;
    font-size: 13px;
    gap: 24px;
  }
  .hero {
    grid-template-columns: 1fr;
    padding: 8px 0 38px;
    gap: 25px;
  }
  .hero-copy {
    padding: 20px 0 5px;
  }
  h1 {
    font-size: clamp(40px, 8.8vw, 62px);
  }
  .hero-copy > p {
    font-size: 17px;
    margin-top: 20px;
    max-width: 570px;
  }
  .actions {
    margin-top: 25px;
    gap: 20px;
  }
  .hero-stage {
    padding: 25px 16px 20px;
  }
  .panel-shot {
    width: 235px;
  }
  .hero-stage:before {
    left: calc(50% - 172px);
    width: 160px;
    height: 160px;
  }
  .steps {
    grid-template-columns: 1fr;
    gap: 26px;
    padding: 10px 0 36px;
  }
  .step {
    display: grid;
    grid-template-columns: 38px 1fr;
    column-gap: 18px;
  }
  .step + .step {
    border: 0;
    padding: 0;
  }
  .step-number {
    grid-row: 1/3;
    margin: 0;
  }
  .step h3 {
    font-size: 21px;
  }
  .step p {
    margin-top: 7px;
    max-width: none;
    font-size: 14px;
  }
  .details {
    padding: 34px 0;
  }
  .detail-list {
    gap: 22px;
    grid-template-columns: 1fr;
    margin-top: 24px;
  }
  .detail-list p {
    max-width: none;
    margin-top: 6px;
  }
  .binding {
    grid-template-columns: 1fr;
    padding: 28px;
    gap: 28px;
  }
  .binding h2 {
    font-size: 32px;
  }
  .install {
    grid-template-columns: 1fr;
    padding: 44px 0;
    gap: 28px;
  }
  .install h2 {
    font-size: 32px;
  }
  .footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 24px;
    padding: 28px 0;
  }
  .footer-right {
    text-align: left;
  }
  .footer-links {
    flex-wrap: wrap;
  }
  .footer-right p {
    margin-left: 0;
  }
  .page-heading {
    padding: 28px 0 30px;
  }
  .page-heading p {
    font-size: 16px;
  }
  .policy-layout {
    grid-template-columns: 1fr;
    gap: 26px;
    padding-bottom: 45px;
  }
  .policy-toc {
    position: static;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 10px 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--line);
  }
  .policy-body h2 {
    font-size: 24px;
  }
  .not-found {
    padding: 55px 0 100px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}

/* Contextual product preview: the main page and sidebar share one frame. */
.hero {
  grid-template-columns: 0.85fr 1.25fr;
  gap: 32px;
  padding-top: 55px;
  padding-bottom: 65px;
}
.hero h1 {
  font-size: clamp(42px, 4.4vw, 64px);
}
.hero-stage {
  padding: 22px 16px 18px;
}
.hero-stage:before {
  display: none;
}
.hero-workspace {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 9px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #fff;
  margin-bottom: 18px;
}
.workspace-labels {
  display: grid;
  grid-template-columns: 74% 26%;
  text-align: left;
  color: var(--ink);
  background: var(--surface);
  font-size: 11px;
  font-weight: 650;
}
.workspace-labels span {
  padding: 10px 8px;
  min-width: 0;
}
.workspace-pages {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 26%;
  gap: 5px;
  background: #dce7ef;
}
.workspace-pages .main-page {
  min-width: 0;
  overflow: hidden;
  position: relative;
}
.workspace-pages .main-page img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  max-width: none;
  height: auto;
}
.workspace-pages > img {
  width: 100%;
  height: auto;
}
@media (max-width: 1080px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 30px;
    padding-top: 20px;
  }
  .hero-copy {
    max-width: 720px;
  }
  .hero-stage {
    width: 100%;
    max-width: 900px;
    margin: auto;
  }
}
@media (max-width: 760px) {
  .hero {
    gap: 28px;
    padding: 8px 0 38px;
  }
  .hero h1 {
    font-size: clamp(40px, 8.8vw, 62px);
  }
  .hero-stage {
    padding: 12px 8px;
  }
  .workspace-labels {
    font-size: 9px;
    grid-template-columns: 70% 30%;
  }
  .workspace-labels span {
    padding: 7px 5px;
  }
  .workspace-pages {
    grid-template-columns: minmax(0, 1fr) 30%;
    gap: 3px;
  }
}