:root {
  --venus-blue: #2f7cf6;
  --venus-blue-hover: #246be0;
  --ink: #1d1d1f;
  --ink-soft: #6e6e73;
  --ink-muted: #6e6e73;
  --surface: #ffffff;
  --surface-soft: #f5f5f7;
  --line: #d2d2d7;
  --dark: #000000;
  --dark-soft: #161617;
  --dark-text: #f5f5f7;
  --radius-small: 12px;
  --radius-medium: 18px;
  --radius-large: 26px;
  --page: min(1120px, calc(100vw - 48px));
  --page-wide: min(1320px, calc(100vw - 48px));
  --page-narrow: min(920px, calc(100vw - 48px));
  --section-space: clamp(104px, 11vw, 168px);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--surface);
  font-family: "SF Pro Display", "SF Pro SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.47;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: inherit;
}

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

h1,
h2,
p,
figure {
  margin: 0;
}

h1,
h2,
p {
  text-wrap: pretty;
}

.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: 200;
  padding: 10px 14px;
  color: #fff;
  background: var(--dark);
  border-radius: 8px;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.page-shell {
  width: var(--page);
  margin-inline: auto;
}

.page-shell--wide {
  width: var(--page-wide);
}

.page-shell--narrow {
  width: var(--page-narrow);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid rgba(210, 210, 215, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
}

.site-nav {
  width: var(--page);
  min-height: 58px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -0.02em;
  text-decoration: none;
}

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

.site-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-menu li {
  display: flex;
}

.site-menu a {
  color: var(--ink);
  font-size: 13px;
  text-decoration: none;
  transition: color 180ms ease;
}

.site-menu a:hover,
.site-menu a:focus-visible {
  color: var(--venus-blue);
}

.site-menu .nav-cta {
  min-height: 34px;
  padding: 7px 15px;
  color: #fff;
  background: var(--venus-blue);
  border-radius: 999px;
}

.site-menu .nav-cta:hover,
.site-menu .nav-cta:focus-visible {
  color: #fff;
  background: var(--venus-blue-hover);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.menu-toggle > span {
  display: block;
  width: 18px;
  height: 1px;
  margin: 5px auto;
  background: var(--ink);
  transition: transform 200ms ease;
}

.hero {
  padding: clamp(88px, 10vw, 148px) 0 var(--section-space);
  overflow: hidden;
  text-align: center;
}

.hero-copy {
  max-width: 1040px;
}

.eyebrow {
  margin-bottom: 20px;
  color: var(--venus-blue);
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -0.015em;
}

.hero h1 {
  max-width: 1040px;
  margin-inline: auto;
  font-size: clamp(52px, 6.6vw, 88px);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 1.04;
}

.hero-lede {
  max-width: 760px;
  margin: 32px auto 0;
  color: var(--ink-soft);
  font-size: clamp(20px, 2.1vw, 28px);
  font-weight: 450;
  letter-spacing: -0.024em;
  line-height: 1.38;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 17px;
  font-weight: 550;
  text-decoration: none;
  transition: background-color 180ms ease, transform 180ms ease;
}

.button--primary {
  color: #fff;
  background: var(--venus-blue);
}

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

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

.text-link {
  color: var(--venus-blue);
  font-size: 19px;
  text-decoration: none;
}

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

.hero-facts {
  margin-top: 28px;
  color: var(--ink-muted);
  font-size: 14px;
}

.product-stage {
  margin-top: clamp(64px, 8vw, 104px);
}

.product-window,
.media-frame,
.dark-stage {
  overflow: hidden;
  border-radius: var(--radius-large);
}

.product-window {
  background: var(--surface-soft);
  border: 1px solid rgba(29, 29, 31, 0.1);
  box-shadow: 0 24px 72px rgba(29, 29, 31, 0.09);
}

.window-bar {
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  color: var(--ink-muted);
  background: #fafafa;
  border-bottom: 1px solid rgba(29, 29, 31, 0.08);
}

.window-bar span {
  width: 9px;
  height: 9px;
  background: #c7c7cc;
  border-radius: 50%;
}

.window-bar p {
  margin-left: 8px;
  font-size: 12px;
}

.product-stage figcaption,
.media-frame figcaption,
.dark-stage figcaption {
  margin-top: 18px;
  color: var(--ink-muted);
  font-size: 14px;
  text-align: center;
}

.statement {
  padding: var(--section-space) 0;
  background: var(--surface-soft);
  text-align: center;
}

.statement h2 {
  font-size: clamp(44px, 5.4vw, 72px);
  font-weight: 650;
  letter-spacing: -0.05em;
  line-height: 1.08;
}

.statement h2 span {
  color: var(--ink-muted);
}

.statement > div > p:last-child {
  max-width: 700px;
  margin: 32px auto 0;
  color: var(--ink-soft);
  font-size: clamp(19px, 2vw, 25px);
}

.feature-section {
  position: relative;
  padding: var(--section-space) 0;
}

.feature-section--soft {
  background: var(--surface-soft);
}

.editorial-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.65fr);
  align-items: center;
  gap: clamp(56px, 8vw, 120px);
}

.editorial-grid--reverse {
  grid-template-columns: minmax(0, 1.65fr) minmax(260px, 0.7fr);
}

.editorial-grid--reverse .feature-copy {
  grid-column: 2;
  grid-row: 1;
}

.feature-copy h2,
.dark-copy h2,
.boundary-heading h2,
.faq-heading h2,
.contact-copy h2 {
  font-size: clamp(44px, 5vw, 68px);
  font-weight: 650;
  letter-spacing: -0.05em;
  line-height: 1.07;
}

.feature-copy > p:last-child,
.dark-copy > p:last-child,
.contact-copy > p:not(.eyebrow):not(.contact-note) {
  margin-top: 26px;
  color: var(--ink-soft);
  font-size: clamp(19px, 1.9vw, 24px);
  line-height: 1.45;
}

.media-frame {
  padding: 14px 14px 0;
  background: var(--surface);
  border: 1px solid rgba(29, 29, 31, 0.08);
}

.media-frame img {
  border-radius: var(--radius-medium);
}

.media-frame figcaption {
  padding: 0 12px 16px;
}

.feature-section--dark {
  color: var(--dark-text);
  background: var(--dark);
}

.dark-copy {
  text-align: center;
}

.feature-section--dark .eyebrow {
  color: #83b6ff;
}

.dark-copy > p:last-child {
  max-width: 720px;
  margin-inline: auto;
  color: #a1a1a6;
}

.dark-stage {
  margin-top: clamp(56px, 7vw, 96px);
  padding: 16px 16px 0;
  background: var(--dark-soft);
  border: 1px solid #2c2c2e;
}

.dark-stage img {
  border-radius: var(--radius-medium);
}

.dark-stage figcaption {
  padding: 0 12px 16px;
  color: #a1a1a6;
}

.legacy-anchor {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.boundary-section {
  padding: var(--section-space) 0;
  background: var(--surface-soft);
}

.boundary-section > .page-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(56px, 8vw, 128px);
}

.boundary-list {
  border-top: 1px solid var(--line);
}

.boundary-list p {
  padding: 24px 0;
  color: var(--ink-soft);
  font-size: 18px;
  border-bottom: 1px solid var(--line);
}

.faq-section {
  padding: var(--section-space) 0;
}

.faq-heading {
  max-width: 820px;
  margin-inline: auto;
  text-align: center;
}

.faq-heading > p:last-child {
  max-width: 680px;
  margin: 24px auto 0;
  color: var(--ink-soft);
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.5;
}

.faq-list {
  margin-top: clamp(48px, 6vw, 72px);
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  min-height: 72px;
  padding: 22px 48px 22px 0;
  color: var(--ink);
  cursor: pointer;
  font-size: clamp(18px, 1.8vw, 22px);
  font-weight: 600;
  letter-spacing: -0.015em;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::before,
.faq-list summary::after {
  position: absolute;
  top: 35px;
  right: 4px;
  width: 16px;
  height: 1px;
  background: var(--ink);
  content: "";
  transition: transform 180ms ease;
}

.faq-list summary::after {
  transform: rotate(90deg);
}

.faq-list details[open] summary::after {
  transform: rotate(0deg);
}

.faq-list details > p {
  max-width: 760px;
  padding: 0 48px 26px 0;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.65;
}

.contact-section {
  padding: var(--section-space) 0;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.65fr);
  align-items: center;
  gap: clamp(56px, 9vw, 140px);
}

.contact-note {
  margin-top: 24px;
  color: var(--ink-muted);
  font-size: 14px;
}

.contact-address {
  display: grid;
  gap: 6px;
  margin-top: 28px;
  color: var(--ink-soft);
  font-size: 15px;
  font-style: normal;
}

.contact-address a {
  width: max-content;
  color: var(--venus-blue);
  text-decoration: none;
}

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

.qr-panel {
  max-width: 300px;
  justify-self: end;
  padding: 18px;
  background: var(--surface-soft);
  border-radius: var(--radius-large);
}

.qr-panel img {
  width: 100%;
  border-radius: var(--radius-small);
}

.qr-panel p {
  margin-top: 16px;
  color: var(--ink-soft);
  font-size: 14px;
  text-align: center;
}

.site-footer {
  padding: 28px 0 36px;
  color: var(--ink-muted);
  background: var(--surface-soft);
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.footer-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 14px;
}

.footer-legal a {
  color: inherit;
  text-decoration: none;
}

.footer-legal a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(47, 124, 246, 0.45);
  outline-offset: 3px;
}

@media (max-width: 980px) {
  :root {
    --section-space: 104px;
  }

  .site-menu {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px 16px;
    padding: 10px 0;
  }

  .js .menu-toggle {
    display: block;
  }

  .js .site-menu {
    position: fixed;
    inset: 59px 0 auto;
    display: grid;
    gap: 0;
    padding: 18px 24px 28px;
    background: rgba(255, 255, 255, 0.97);
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    visibility: hidden;
    transition: transform 240ms var(--ease-out), visibility 240ms;
  }

  .js .site-menu.is-open {
    transform: translateY(0);
    visibility: visible;
  }

  .js .site-menu li {
    display: block;
  }

  .js .site-menu a {
    min-height: 48px;
    display: flex;
    align-items: center;
    font-size: 17px;
    border-bottom: 1px solid var(--line);
  }

  .js .site-menu .nav-cta {
    width: max-content;
    min-height: 40px;
    margin-top: 18px;
    border: 0;
  }

  .menu-toggle[aria-expanded="true"] > span:nth-of-type(1) {
    transform: translateY(3px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] > span:nth-of-type(2) {
    transform: translateY(-3px) rotate(-45deg);
  }

  .editorial-grid,
  .editorial-grid--reverse,
  .boundary-section > .page-shell,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .editorial-grid--reverse .feature-copy {
    grid-column: auto;
    grid-row: auto;
  }

  .editorial-grid--reverse .media-frame {
    grid-row: 2;
  }

  .feature-copy,
  .boundary-heading,
  .contact-copy {
    max-width: 760px;
  }

  .qr-panel {
    justify-self: start;
  }
}

@media (max-width: 720px) {
  :root {
    --page: calc(100vw - 40px);
    --page-wide: calc(100vw - 28px);
    --page-narrow: calc(100vw - 40px);
    --section-space: 76px;
  }

  .site-nav {
    min-height: 54px;
  }

  .site-menu {
    inset: 55px 0 auto;
  }

  .hero {
    padding-top: 72px;
  }

  .hero h1 {
    font-size: clamp(42px, 12vw, 58px);
    letter-spacing: -0.045em;
  }

  .hero-lede {
    margin-top: 24px;
    font-size: 20px;
  }

  .hero-actions {
    flex-direction: column;
    gap: 18px;
    margin-top: 30px;
  }

  .button {
    width: min(100%, 280px);
  }

  .hero-facts {
    max-width: 260px;
    margin-inline: auto;
  }

  .product-stage {
    margin-top: 60px;
  }

  .window-bar {
    min-height: 34px;
  }

  .window-bar p {
    display: none;
  }

  .product-window,
  .media-frame,
  .dark-stage {
    border-radius: var(--radius-medium);
  }

  .product-window img,
  .media-frame img,
  .dark-stage img {
    width: 140%;
    max-width: none;
    margin-left: -20%;
  }

  .media-frame--handoff img {
    margin-left: -34%;
  }

  .statement h2,
  .feature-copy h2,
  .dark-copy h2,
  .boundary-heading h2,
  .faq-heading h2,
  .contact-copy h2 {
    font-size: clamp(38px, 10.5vw, 50px);
  }

  .eyebrow {
    margin-bottom: 16px;
    font-size: 15px;
  }

  .editorial-grid {
    gap: 42px;
  }

  .feature-copy > p:last-child,
  .dark-copy > p:last-child,
  .contact-copy > p:not(.eyebrow):not(.contact-note) {
    margin-top: 20px;
    font-size: 19px;
  }

  .boundary-section > .page-shell,
  .contact-layout {
    gap: 42px;
  }

  .boundary-list p {
    padding: 20px 0;
    font-size: 16px;
  }

  .faq-list summary {
    min-height: 66px;
    padding-block: 20px;
    font-size: 18px;
  }

  .faq-list summary::before,
  .faq-list summary::after {
    top: 32px;
  }

  .faq-list details > p {
    padding: 0 40px 22px 0;
    font-size: 16px;
  }

  .qr-panel {
    width: min(100%, 300px);
    justify-self: center;
  }

  .footer-layout {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

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

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}