:root {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  color: #1d1d1f;
  background: #fff;
  font-synthesis: none;
  --blue: #0069d9;
  --muted: #626269;
  --line: #dcdce1;
  accent-color: var(--blue);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}
body {
  margin: 0;
  -webkit-font-smoothing: antialiased;
}
::selection {
  background: #cce4ff;
  color: #102a44;
}
a {
  color: inherit;
  text-decoration: none;
  text-underline-offset: 0.25em;
}
button {
  font: inherit;
  cursor: pointer;
}
a,
button {
  touch-action: manipulation;
}
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 5px;
}
h1,
h2,
h3,
p,
figure {
  margin: 0;
}
h1,
h2,
h3 {
  text-wrap: balance;
}
p {
  line-height: 1.8;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
.wrap {
  width: min(1120px, calc(100% - 48px));
  margin-inline: auto;
}
.skip-link {
  position: fixed;
  top: -100px;
  left: 20px;
  padding: 12px;
  background: #fff;
  z-index: 30;
}
.skip-link:focus {
  top: 10px;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 10px max(24px, calc((100vw - 1120px) / 2));
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid #0000000d;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 650;
}
.brand img {
  object-fit: contain;
}
.site-header nav {
  display: flex;
  gap: 28px;
  font-size: 14px;
}
.site-header nav a {
  padding-block: 12px;
}
nav a:hover,
footer a:hover {
  color: var(--blue);
}
.download-link,
.primary {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 44px;
  padding: 10px 22px;
  color: white;
  background: var(--blue);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 550;
}
.download-link {
  font-size: 13px;
  padding: 8px 18px;
}
.primary:hover,
.download-link:hover {
  background: #0058b8;
}
.secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--blue);
  min-height: 44px;
}
.secondary:hover {
  text-decoration: underline;
}
.hero {
  text-align: center;
  padding-block: 64px 44px;
}
.hero-icon {
  display: block;
  margin: 0 auto 24px;
  object-fit: contain;
}
h1 {
  font-size: clamp(48px, 6vw, 76px);
  font-weight: 650;
  line-height: 1.16;
  letter-spacing: -0.035em;
}
h1 span,
h2 span {
  color: var(--blue);
}
.intro {
  margin-top: 24px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.7;
}
.actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 28px;
  margin-top: 28px;
}
.platforms {
  margin-top: 20px;
  font-size: 13px;
  color: var(--muted);
}
.platforms a:hover {
  text-decoration: underline;
}
.release-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 13px;
  color: var(--blue);
  padding: 8px;
}
.showcase {
  padding-bottom: 84px;
}
.platform-switch {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin: 12px 0 24px;
}
.platform-switch button {
  border: 0;
  border-radius: 999px;
  padding: 10px 20px;
  min-height: 44px;
  background: transparent;
  color: var(--muted);
}
.platform-switch button[aria-pressed="true"] {
  background: #eceef2;
  color: #1d1d1f;
  font-weight: 600;
}
.platform-switch button:hover {
  background: #f2f3f5;
}
.showcase figure {
  margin: 0;
}
.showcase figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 720px;
  object-fit: contain;
  filter: drop-shadow(0 18px 24px #17234313);
}
figcaption {
  text-align: center;
  margin-top: 24px;
  color: var(--muted);
  font-size: 14px;
}
.section-intro {
  margin-bottom: 48px;
}
.section-intro h2 {
  font-size: clamp(34px, 4.5vw, 52px);
  font-weight: 650;
  line-height: 1.2;
  letter-spacing: -0.025em;
}
.section-intro > p {
  margin-top: 22px;
  font-size: 18px;
  color: var(--muted);
  max-width: 65ch;
}
.feature-section {
  padding-block: 40px 100px;
}
.feature-rows {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 70px;
}
.feature-rows article {
  padding: 32px 0;
  border-top: 1px solid var(--line);
}
h3 {
  font-size: 23px;
  letter-spacing: -0.015em;
  line-height: 1.45;
  margin-bottom: 14px;
}
.feature-rows p {
  color: var(--muted);
  font-size: 16px;
}
.feature-rows p + p {
  margin-top: 12px;
}
.feature-rows ul {
  padding-left: 20px;
  color: var(--muted);
  line-height: 2;
  font-size: 15px;
  margin: 14px 0 0;
}
.continuity-section {
  background: #f5f6f8;
  padding-block: 90px;
}
.continuity-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
}
.continuity-section .section-intro {
  margin-bottom: 0;
}
.continuity-section .secondary {
  margin-top: 20px;
}
.continuity-copy > p {
  color: var(--muted);
}
.continuity-copy h3:not(:first-child) {
  margin-top: 32px;
}
.note {
  font-size: 13px !important;
  color: var(--muted);
  line-height: 1.8;
}
.continuity-copy .note {
  margin-top: 20px;
}
.appearance-section {
  padding-block: 100px;
}
.icon-options {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 10px;
}
.icon-options button {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 14px 4px;
  color: var(--muted);
  min-width: 0;
}
.icon-options img {
  width: min(80px, 100%);
  height: auto;
  aspect-ratio: 1;
  object-fit: contain;
  transition: transform 0.2s ease-out;
}
.icon-options button:hover img {
  transform: translateY(-4px);
}
.icon-options button[aria-pressed="true"] {
  border-color: var(--blue);
  color: var(--blue);
  background: #f0f6ff;
}
.icon-options span {
  font-size: 13px;
}
.icon-status {
  text-align: center;
  margin-top: 24px;
}
.demo-section {
  padding-block: 30px 100px;
}
.reader-frame {
  height: 700px;
  overflow: hidden;
  border-radius: 14px;
  box-shadow: 0 16px 50px #17234316;
  background: #f5f5f7;
}
.reader-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}
.demo-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 20px;
}
.demo-footer p {
  color: var(--muted);
  font-size: 14px;
}
.demo-footer button {
  color: var(--blue);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  min-height: 44px;
  padding: 8px 20px;
  white-space: nowrap;
}
.demo-footer button:hover {
  background: #f0f6ff;
}
.demo-section > .note {
  margin-top: 14px;
  max-width: 75ch;
}
.download-section {
  background: #f5f6f8;
  padding-block: 90px;
}
.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.download-grid h3 {
  margin-bottom: 4px;
}
.download-grid p {
  color: var(--muted);
  font-size: 14px;
}
.download-grid a {
  margin-top: 22px;
}
.download-grid .note {
  margin-top: 14px;
}
.requirements {
  border-top: 1px solid var(--line);
  margin-top: 50px;
  padding-top: 24px;
  color: var(--muted);
  font-size: 14px;
  max-width: 75ch;
}
.requirements summary {
  cursor: pointer;
  color: #1d1d1f;
  min-height: 44px;
  padding-block: 10px;
}
.requirements p {
  margin: 12px 0;
}
.requirements a {
  color: var(--blue);
}
footer {
  padding-block: 48px;
  display: flex;
  justify-content: space-between;
  gap: 32px;
}
footer p {
  font-size: 12px;
  color: var(--muted);
  margin-top: 12px;
}
footer nav {
  display: flex;
  gap: 22px;
  align-items: center;
  font-size: 13px;
}
@media (max-width: 900px) {
  .icon-options {
    grid-template-columns: repeat(5, 1fr);
  }
  .feature-rows,
  .continuity-grid {
    column-gap: 36px;
  }
  .download-grid {
    grid-template-columns: 1fr 1fr;
    gap: 38px;
  }
  .reader-frame {
    height: 620px;
  }
  .site-header nav {
    gap: 18px;
  }
  .showcase {
    padding-bottom: 50px;
  }
}
@media (max-width: 600px) {
  .wrap {
    width: calc(100% - 36px);
  }
  .site-header {
    padding-inline: 18px;
    gap: 12px;
    min-height: 64px;
  }
  .site-header .brand {
    font-size: 14px;
    gap: 6px;
  }
  .site-header .brand img {
    width: 30px;
    height: 30px;
  }
  .site-header nav {
    display: none;
  }
  .download-link {
    padding-inline: 14px;
    white-space: nowrap;
  }
  .hero {
    padding-block: 42px 24px;
  }
  .hero-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
  }
  .intro {
    font-size: 17px;
  }
  .actions {
    gap: 18px;
    flex-wrap: wrap;
  }
  .primary {
    font-size: 14px;
    padding-inline: 19px;
  }
  .platform-switch {
    margin-top: 20px;
  }
  .showcase figure img {
    min-height: 230px;
  }
  .feature-section {
    padding-block: 40px 60px;
  }
  .section-intro {
    margin-bottom: 32px;
  }
  .section-intro > p {
    font-size: 16px;
  }
  .feature-rows,
  .continuity-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .feature-rows article {
    padding-block: 26px;
  }
  h3 {
    font-size: 21px;
  }
  .continuity-section,
  .download-section {
    padding-block: 60px;
  }
  .continuity-copy {
    margin-top: 36px;
  }
  .appearance-section {
    padding-block: 60px;
  }
  .icon-options {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
  .icon-options button {
    padding: 14px 8px;
  }
  .icon-options img {
    width: 72px;
  }
  .demo-section {
    padding-block: 20px 60px;
  }
  .reader-frame {
    height: 560px;
    border-radius: 10px;
  }
  .demo-footer {
    gap: 12px;
  }
  .demo-footer p {
    font-size: 12px;
  }
  .demo-footer button {
    font-size: 13px;
    padding-inline: 16px;
  }
  .download-grid {
    gap: 32px 18px;
  }
  .download-grid h3 {
    font-size: 21px;
  }
  .download-grid p {
    font-size: 12px;
  }
  .download-grid .primary {
    font-size: 12px;
    padding-inline: 14px;
  }
  footer {
    flex-direction: column;
    padding-block: 32px;
  }
  footer nav {
    flex-wrap: wrap;
    gap: 24px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.language-picker {
  position: relative;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: #1d1d1f;
}
.language-picker:hover {
  background: #f5f6f8;
}
.language-icon {
  width: 23px;
  height: 23px;
  pointer-events: none;
}
.language-picker select {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}
.language-picker:has(select:focus-visible) {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}
@media (max-width: 1000px) {
  .site-header nav {
    display: none;
  }
}
@media (max-width: 600px) {
  .header-actions {
    gap: 4px;
  }
  h1 {
    font-size: clamp(38px, 10vw, 48px);
  }
}

.platform-banner {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 0;
  padding: 0;
  border-radius: 0;
}