:root {
  color-scheme: light;
  --canvas: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f6f7f8;
  --surface-warm: #fbfaf8;
  --ink: #202126;
  --ink-soft: #5d616b;
  --line: #e8e9ed;
  --accent: #d66734;
  --accent-strong: #ad4a20;
  --accent-soft: #fce5d7;
  --radius-large: 26px;
  --radius-medium: 16px;
  --page-width: min(1320px, calc(100% - 48px));
  --shadow-device: 0 36px 72px rgba(29, 30, 35, 0.2);
  --shadow-soft: 0 20px 48px rgba(40, 42, 48, 0.08);
  font-family: Avenir Next, Avenir, PingFang SC, Hiragino Sans GB, Noto Sans CJK SC, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

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

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

.site-header,
.site-footer,
.hero,
.downloads,
.features {
  width: var(--page-width);
  margin-inline: auto;
}

.site-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 1.02rem;
  font-weight: 760;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.brand img {
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(36, 37, 41, 0.12);
}

.site-nav,
.hero-actions,
.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav a,
.footer-links a {
  font-size: 0.94rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:not(.nav-download):hover,
.footer-links a:hover {
  color: var(--accent-strong);
}

.nav-download,
.button-primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(214, 103, 52, 0.2);
}

.nav-download {
  padding: 10px 16px;
  border-radius: 10px;
}

.nav-download:hover,
.button-primary:hover {
  background: var(--accent-strong);
}

.site-nav a:focus-visible,
.footer-links a:focus-visible,
.brand:focus-visible,
.button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.hero {
  padding-top: clamp(24px, 4vw, 48px);
  overflow: hidden;
}

.hero-copy {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.hero-kicker {
  margin: 0 0 16px;
  color: var(--accent-strong);
  font-size: 0.94rem;
  font-weight: 740;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

h1 {
  margin-bottom: 22px;
  font-size: clamp(3.15rem, 5.6vw, 5.85rem);
  letter-spacing: -0.072em;
  line-height: 0.98;
  white-space: pre-line;
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .title-accent {
    background: linear-gradient(90deg, #ec6d9d 0%, #b578ed 32%, #f0ad2a 67%, #529fd5 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.hero-body {
  max-width: 34ch;
  margin: 0 auto 28px;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 1.45vw, 1.16rem);
  white-space: pre-line;
}

.hero-actions {
  justify-content: center;
  gap: 12px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 11px;
  font-size: 0.98rem;
  font-weight: 740;
  text-decoration: none;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
  white-space: nowrap;
}

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

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

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(1px);
}

.hero-devices {
  --hero-device-baseline: 30px;
  position: relative;
  min-height: clamp(610px, 53vw, 740px);
  margin-top: clamp(18px, 3vw, 38px);
  overflow: hidden;
  isolation: isolate;
}

.hero-device {
  position: absolute;
  pointer-events: none;
}

.hero-device-imac {
  z-index: 1;
  bottom: var(--hero-device-baseline);
  left: 50%;
  width: 640px;
  height: 540px;
  transform: translateX(-50%) scale(1.12);
  transform-origin: bottom center;
}

.hero-device .device-screen {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.hero-device-ipad {
  z-index: 3;
  bottom: var(--hero-device-baseline);
  left: 7%;
  width: 224px;
  height: 315px;
  transform: none;
  transform-origin: bottom left;
}

.hero-ipad {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  padding: 4px;
  border: 1px solid #282a2d;
  border-radius: 28px;
  background: #202225;
  box-shadow: 0 24px 48px rgba(29, 30, 35, 0.2);
}

.hero-ipad img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 22px;
  object-fit: cover;
  object-position: top center;
}

.hero-ipad-camera {
  position: absolute;
  z-index: 2;
  top: 3px;
  left: 50%;
  width: 7px;
  height: 7px;
  margin-left: -3.5px;
  border-radius: 50%;
  background: #0d0f12;
}

.hero-device-phone {
  z-index: 4;
  width: 428px;
  height: 868px;
  transform-origin: bottom center;
}

.hero-device-phone-left {
  transform-origin: bottom left;
  bottom: var(--hero-device-baseline);
  left: 1%;
  transform: scale(0.225);
}

.hero-device-macbook {
  z-index: 3;
  right: 0;
  bottom: var(--hero-device-baseline);
  width: 740px;
  height: 434px;
  transform: scale(0.74);
  transform-origin: bottom right;
}

.downloads {
  margin-top: clamp(62px, 10vw, 134px);
  padding: clamp(60px, 7vw, 96px) clamp(22px, 5vw, 70px);
  border-radius: var(--radius-large);
  background: var(--surface-soft);
}

.section-intro {
  max-width: 720px;
  margin: 0 auto 42px;
  text-align: center;
}

.section-intro h2,
.feature-copy h2 {
  margin-bottom: 16px;
  font-size: clamp(2.5rem, 5vw, 4.7rem);
  letter-spacing: -0.075em;
  line-height: 0.98;
  white-space: pre-line;
}

.section-intro p,
.feature-copy p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.45vw, 1.14rem);
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.platform-card {
  position: relative;
  overflow: hidden;
  min-height: 286px;
  display: flex;
  align-items: stretch;
  border: 1px solid #eceef1;
  border-radius: var(--radius-medium);
  background: var(--surface);
  box-shadow: 0 16px 32px rgba(35, 38, 45, 0.05);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.platform-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 22px 42px rgba(35, 38, 45, 0.1);
}

.platform-card.is-disabled:hover {
  transform: none;
  box-shadow: 0 16px 32px rgba(35, 38, 45, 0.05);
}

.platform-card-link {
  min-width: 0;
  display: flex;
  flex: 1;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

.platform-card-link.is-disabled {
  cursor: default;
}

.platform-copy {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px 24px;
  text-align: center;
}

.platform-icon {
  height: 72px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
}

.platform-icon img {
  width: 58px;
  height: 58px;
  object-fit: contain;
}

.platform-card-1 .platform-icon img {
  border-radius: 16px;
  box-shadow: 0 10px 24px rgba(38, 40, 46, 0.16);
}

.platform-card h3 {
  margin-bottom: 6px;
  font-size: 1.35rem;
  letter-spacing: -0.045em;
}

.platform-card p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.platform-qr {
  position: static;
}

.platform-qr-trigger {
  position: absolute;
  z-index: 2;
  top: 0;
  right: 0;
  width: 76px;
  height: 76px;
  display: grid;
  place-items: start end;
  padding: 18px 16px 0 0;
  border: 0;
  border-radius: 0 var(--radius-medium) 0 0;
  background: #eaf1ff;
  color: #2f73e6;
  cursor: pointer;
}

.platform-qr-trigger::before {
  content: '';
  position: absolute;
  z-index: 1;
  inset: 0;
  background: var(--surface);
  clip-path: polygon(0 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.platform-qr-trigger:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: -3px;
}

.platform-qr-glyph {
  width: 28px;
  height: 28px;
  display: block;
  fill: currentColor;
}

.platform-qr-panel {
  position: absolute;
  z-index: 1;
  inset: 0;
  width: 100%;
  height: 100%;
  display: grid;
  justify-items: center;
  gap: 10px;
  align-content: center;
  padding: 36px 24px 20px;
  border: 0;
  border-radius: inherit;
  background: var(--surface);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
}

.platform-qr.is-open .platform-qr-panel {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transform: translateY(0);
}

.platform-qr-code,
.platform-qr-code svg {
  width: 148px;
  height: 148px;
  display: block;
}

.platform-qr-label {
  color: var(--ink-soft);
  font-size: 0.82rem;
  font-weight: 700;
  text-align: center;
}

.platform-qr.is-hovered .platform-qr-panel {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transform: translateY(0);
}

.features {
  padding: clamp(64px, 8vw, 112px) 0 clamp(64px, 8vw, 112px);
}

.feature {
  position: relative;
  display: grid;
  align-items: center;
  gap: clamp(30px, 4.5vw, 64px);
  overflow: visible;
  background: transparent;
}

.feature + .feature {
  margin-top: clamp(32px, 3.5vw, 56px);
}

.feature-copy {
  position: relative;
  z-index: 2;
  max-width: 360px;
}

.feature-copy h2 {
  margin-bottom: 18px;
  font-size: clamp(2.55rem, 3.7vw, 3.8rem);
  letter-spacing: -0.065em;
  line-height: 1.02;
  white-space: pre-line;
}

.feature-copy p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.2vw, 1.08rem);
}

.feature-device {
  width: 100%;
  margin: 0;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 3px solid #2d2e33;
  border-radius: 18px;
  background: #fbf7f2;
  box-shadow: 0 24px 52px rgba(29, 30, 35, 0.16);
}

.feature-device img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  border-radius: 14px;
}

.feature-idea {
  grid-template-columns: minmax(250px, 0.54fr) minmax(0, 1.46fr);
  min-height: 480px;
  padding: clamp(22px, 3.5vw, 44px) 0;
}

.feature-memory {
  grid-template-areas: 'media copy';
  grid-template-columns: minmax(0, 1.58fr) minmax(250px, 0.42fr);
  min-height: 490px;
  padding: clamp(22px, 3.5vw, 44px) 0;
}

.feature-memory .feature-copy,
.feature-workflow .feature-copy {
  grid-area: copy;
}

.feature-memory .feature-device-pair,
.feature-workflow .feature-device-pair {
  grid-area: media;
}

.feature-device-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(130px, 0.26fr);
  align-items: end;
  gap: 0;
}

.feature-device-tablet {
  width: 100%;
}

.feature-device-phone {
  position: relative;
  z-index: 2;
  width: 100%;
  aspect-ratio: 0.462;
  margin-left: -28%;
  transform: translateY(28px);
  border-radius: 28px;
}

.feature-device-phone img {
  aspect-ratio: 0.462;
  border-radius: 20px;
}

.feature-human {
  grid-template-columns: minmax(250px, 0.75fr) minmax(0, 1.25fr);
  min-height: 470px;
  padding: clamp(22px, 3.5vw, 44px) 0;
}

.feature-workflow {
  grid-template-areas: 'media copy';
  grid-template-columns: minmax(0, 1.48fr) minmax(250px, 0.52fr);
  min-height: 480px;
  padding: clamp(22px, 3.5vw, 44px) 0;
}

.feature-control {
  grid-template-columns: minmax(250px, 0.65fr) minmax(0, 1.35fr);
  min-height: 490px;
  padding: clamp(22px, 3.5vw, 44px) 0;
}

@media (prefers-reduced-motion: no-preference) {
  .has-feature-motion .feature {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 520ms ease, transform 520ms cubic-bezier(0.16, 1, 0.3, 1);
  }

  .has-feature-motion .feature-device-pair {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 620ms 90ms ease, transform 620ms 90ms cubic-bezier(0.16, 1, 0.3, 1);
  }

  .has-feature-motion .feature.is-revealed,
  .has-feature-motion .feature.is-revealed .feature-device-pair {
    opacity: 1;
    transform: none;
  }
}

.site-footer {
  min-height: 118px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 24px;
  border-top: 1px solid var(--line);
}

.site-footer .footer-links {
  grid-column: 2;
  grid-row: 1;
}

.site-footer p {
  grid-column: 3;
  grid-row: 1;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  justify-self: end;
}

.china-compliance {
  grid-column: 1 / -1;
  grid-row: 2;
  justify-self: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: color-mix(in srgb, var(--ink-soft) 72%, transparent);
  font-size: 12px;
  line-height: 1.4;
}

.china-compliance a {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  color: inherit;
  text-decoration: none;
}

.china-compliance a:hover {
  color: var(--accent-strong);
}

.china-compliance img {
  width: 12px;
  height: 13px;
  opacity: 0.68;
}

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

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

@media (max-width: 1000px) {
  .hero-devices {
    --hero-device-baseline: 26px;
    min-height: clamp(570px, 62vw, 650px);
  }

  .hero-device-imac {
    transform: translateX(-50%) scale(0.94);
  }

  .hero-device-ipad {
    transform: scale(0.8);
  }

  .hero-device-phone-left {
    transform: scale(0.23);
  }

  .hero-device-macbook {
    transform: scale(0.6);
  }

}

@media (max-width: 760px) {
  :root {
    --page-width: min(100% - 32px, 620px);
    --radius-large: 24px;
  }

  .site-header {
    min-height: 66px;
  }

  .site-nav {
    gap: 12px;
  }

  .site-nav a:not(.nav-download) {
    display: none;
  }

  .nav-download {
    display: inline-flex;
    flex-shrink: 0;
    padding: 9px 13px;
    font-size: 0.84rem;
  }

  .hero {
    padding-top: 36px;
  }

  .hero-copy {
    text-align: left;
  }

  .hero-kicker {
    margin-bottom: 12px;
    font-size: 0.88rem;
  }

  h1 {
    max-width: 10ch;
    margin-bottom: 18px;
    font-size: clamp(3rem, 15vw, 4.7rem);
  }

  .hero-body {
    max-width: 28ch;
    margin-inline: 0;
    margin-bottom: 24px;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .hero-devices {
    --hero-device-baseline: 22px;
    min-height: 400px;
    margin-top: 42px;
  }

  .hero-device-imac {
    top: auto;
    transform: translateX(-50%) scale(0.44);
  }

  .hero-device-ipad {
    left: 30px;
    transform: scale(0.62);
  }

  .hero-device-phone-left {
    left: 8px;
    transform: scale(0.15);
  }

  .hero-device-macbook {
    right: 0;
    transform: scale(0.31);
  }

  .downloads {
    margin-top: 54px;
    padding: 52px 18px;
  }

  .section-intro {
    margin-bottom: 30px;
    text-align: left;
  }

  .section-intro h2,
  .feature-copy h2 {
    font-size: clamp(2.45rem, 12vw, 3.75rem);
  }

  .platform-grid {
    grid-template-columns: 1fr;
  }

  .platform-card {
    min-height: 250px;
  }

  .platform-copy {
    padding: 20px;
  }

  .features {
    padding-top: 64px;
    padding-bottom: 72px;
  }

  .feature + .feature {
    margin-top: 40px;
  }

  .feature-idea,
  .feature-memory,
  .feature-human,
  .feature-workflow,
  .feature-control {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
    min-height: 0;
    padding: 26px 0;
  }

  .feature-copy,
  .feature-human .feature-copy,
  .feature-control .feature-copy {
    max-width: 30ch;
    justify-self: auto;
  }

  .feature-device-pair {
    width: 100%;
    min-height: 0;
  }

  .feature-device-phone {
    transform: translateY(18px);
  }

  .site-footer {
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 18px;
    padding-block: 32px;
  }

  .china-compliance {
    align-self: flex-start;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
}

@media (max-width: 420px) {
  .hero-actions {
    width: 100%;
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .platform-card {
    min-height: 230px;
  }

  .platform-copy {
    padding: 18px;
  }
}