:root {
        color-scheme: light dark;
        --background: #fff;
        --text: #152033;
        --lead: #495467;
        --muted: #657086;
        --border: #aab4c0;
        --divider: #e5e9ee;
        --secondary-text: #142740;
        --secondary-hover: #f4f7fa;
        --secondary-icon-filter: none;
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        color: var(--text);
        background: var(--background);
      }
      @media (prefers-color-scheme: dark) {
        :root:not([data-theme="light"]) {
          --background: #000;
          --text: #f2f5fa;
          --lead: #c4cedd;
          --muted: #a9b6c9;
          --border: #64748b;
          --divider: #303a49;
          --secondary-text: #f2f5fa;
          --secondary-hover: #182230;
          --secondary-icon-filter: invert(1);
        }
      }
      * { box-sizing: border-box; }
      body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; }
      .site-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 20px; border-bottom: 1px solid var(--divider); }
      .company-logo { display: block; width: 149px; height: auto; flex: none; }
      .language-bar { display: flex; justify-content: flex-end; min-width: 0; }
      .language-bar select { min-width: 0; max-width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--background); color: var(--text); font: inherit; }
      .language-bar select:focus-visible { outline: 3px solid #e69351; outline-offset: 3px; }
      main { width: min(100% - 40px, 680px); margin: auto; padding: 64px 0 72px; text-align: center; }
      .app-icon { display: block; width: 112px; height: 112px; margin: 0 auto 32px; border-radius: 25px; }
      h1 { margin: 0 0 14px; font-size: clamp(2.4rem, 7vw, 4rem); line-height: 1.1; letter-spacing: -.04em; }
      h1 .subtitle { display: block; margin-top: 8px; font-size: .58em; font-style: italic; font-weight: 400; letter-spacing: .01em; }
      .lead { max-width: 560px; margin: 0 auto; color: var(--lead); font-size: 1.2rem; line-height: 1.6; }
      .beta { margin: 28px auto 0; color: var(--muted); font-size: .95rem; }
      .release { margin: 14px auto 0; color: var(--muted); font-size: .9rem; line-height: 1.5; }
      .downloads { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; width: min(100%, 430px); margin: 38px auto 0; }
      .button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 58px; padding: 12px 18px; border-radius: 12px; color: #fff; background: #142740; font-weight: 650; text-decoration: none; }
      .button img { width: 22px; height: 22px; flex: none; filter: invert(1); }
      .button:hover { background: #294464; }
      .button:focus-visible { outline: 3px solid #e69351; outline-offset: 4px; }
      .button.secondary { background: var(--background); color: var(--secondary-text); border: 1px solid var(--border); }
      .button.secondary:hover { background: var(--secondary-hover); }
      .button.secondary img { filter: var(--secondary-icon-filter); }
      .note { margin: 20px auto 0; color: var(--muted); font-size: .9rem; line-height: 1.5; }
      footer { padding: 24px 20px 32px; border-top: 1px solid var(--divider); text-align: center; color: var(--muted); font-size: .85rem; }
      footer img { display: block; width: 149px; height: auto; margin: 10px auto 0; }
      footer a { display: inline-block; margin-top: 10px; color: inherit; }

/* The original introduction and download controls retain their presentation. */
:root { --panel: #f4f6f8; --accent: #a95825; --placeholder: #e9edf2; }
html { scroll-behavior: smooth; scroll-padding-top: 82px; }
main { width: 100%; margin: 0; padding: 0; text-align: left; }
.intro { width: min(100% - 40px, 680px); margin: 0 auto; padding: 64px 0 88px; text-align: center; }
.cross-device { max-width: 600px; margin: 20px auto 0; color: var(--lead); font-size: .98rem; line-height: 1.7; }
.skip-link { position: absolute; top: -100px; left: 20px; z-index: 10; padding: 12px 18px; color: var(--text); background: var(--background); border: 2px solid currentColor; }
.skip-link:focus { top: 12px; }
a:focus-visible, select:focus-visible { outline: 3px solid #e69351; outline-offset: 5px; }
.section-nav { position: sticky; top: 0; z-index: 5; background: var(--background); border-bottom: 1px solid var(--divider); }
.nav-inner { display: flex; justify-content: center; align-items: center; gap: clamp(16px, 5vw, 54px); min-height: 65px; width: min(100% - 40px, 1120px); margin: auto; }
.section-nav a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; color: var(--text); font-size: .94rem; font-weight: 550; line-height: 1.4; text-decoration: none; text-underline-offset: 5px; padding: 12px 0; }
.section-nav a:hover { text-decoration: underline; }
.section-nav .nav-download { padding: 8px 18px; border: 1px solid var(--border); border-radius: 7px; }
.section-shell { width: min(100% - 80px, 1120px); margin: 0 auto; }
.reading-section { display: grid; grid-template-columns: 1fr 1.14fr; align-items: center; gap: 72px; padding: 64px 0 112px; border-top: 1px solid var(--divider); }
h2 { margin: 0 0 22px; font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.13; font-weight: 650; letter-spacing: -.035em; text-wrap: balance; }
.eyebrow { margin: 0 0 24px; color: var(--accent); font-size: .76rem; font-weight: 700; letter-spacing: .14em; line-height: 1.5; }
.eyebrow > span:first-child { margin-right: 12px; opacity: .8; }
.section-lead { margin: 0; color: var(--lead); font-size: 1.08rem; line-height: 1.75; }
.reading-features { margin: 32px 0; display: grid; gap: 24px; }
dt { font-size: 1.02rem; line-height: 1.4; font-weight: 650; }
dd { margin: 8px 0 0; color: var(--lead); font-size: .96rem; line-height: 1.7; }
.formats-section { padding: 72px 0 88px; border-top: 1px solid var(--divider); }
.formats-section h2 { max-width: 760px; }
.formats-section .section-lead { max-width: 700px; }
.format-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 24px; list-style: none; padding: 0; margin: 40px 0 24px; }
.format-grid li { min-width: 0; padding: 22px 0; border-top: 1px solid var(--border); }
.format-grid strong { display: block; font-size: 1rem; line-height: 1.5; }
.format-grid span { display: block; margin-top: 10px; color: var(--lead); font-size: .9rem; line-height: 1.65; }
.format-limit { margin: 0; color: var(--muted); font-size: .85rem; line-height: 1.6; }
.screenshot-placeholder { position: relative; display: grid; place-items: center; min-width: 0; margin: 0; background: var(--panel); color: var(--lead); border: 1px solid var(--divider); border-radius: 20px; overflow: hidden; }
.screenshot-placeholder::before { content: ""; position: absolute; inset: 18px; border: 1px dashed var(--border); border-radius: 10px; opacity: .65; pointer-events: none; }
.reader-placeholder { width: 100%; aspect-ratio: 4 / 3; min-height: 340px; }
.placeholder-content { padding: 44px; text-align: center; }
.placeholder-symbol { display: block; width: 52px; height: 52px; margin: 0 auto 22px; stroke: currentColor; stroke-width: 1.2; opacity: .65; }
figcaption strong { display: block; font-size: 1rem; font-weight: 550; line-height: 1.5; }
figcaption span { display: block; margin-top: 9px; font-size: .8rem; line-height: 1.5; }
.voices-band { background: #142740; color: #f2f5fa; }
.voices-layout { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 120px; padding: 90px 0; }
.voices-band .eyebrow { color: #edb38b; }
.voices-band .section-lead, .voices-band .compatibility-note { color: #c4cedd; }
.voice-placeholder { justify-self: center; width: min(100%, 284px); aspect-ratio: 9 / 15; border-radius: 30px; background: #20364f; color: #dce5f0; border-color: #5c718a; }
.voice-placeholder::before { border-color: #7e91a8; border-radius: 18px; }
.voice-benefits { display: grid; gap: 0; margin: 28px 0; padding: 0; list-style: none; }
.voice-benefits li { padding: 16px 0; border-bottom: 1px solid #40516a; font-size: 1rem; line-height: 1.5; }
.offline-note { font-size: .94rem; line-height: 1.7; margin: 0; }
.compatibility-note { font-size: .8rem; line-height: 1.7; margin: 12px 0 0; }
.access-section { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; padding: 112px 0; }
.access-features { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 35px 32px; }
.access-features > div { padding-top: 20px; border-top: 1px solid var(--divider); }
.access-usecases { display: grid; gap: 24px; margin-top: 30px; }
.access-usecases h3 { font-size: 1.04rem; line-height: 1.5; margin: 0 0 8px; }
.access-usecases p { color: var(--lead); font-size: .96rem; line-height: 1.7; margin: 0; }
.type-sample { display: flex; align-items: baseline; gap: 22px; margin-top: 28px; color: var(--accent); line-height: 1.2; }
.type-sample span:nth-child(1) { font-size: 27px; }
.type-sample span:nth-child(2) { font-size: 44px; }
.type-sample span:nth-child(3) { font-size: 64px; }
.download-section { text-align: center; width: min(100% - 40px, 680px); margin: 0 auto; padding: 82px 0 96px; border-top: 1px solid var(--divider); }
.download-section h2 { font-size: clamp(2rem, 4vw, 2.7rem); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --panel: #0e1620; --accent: #edb38b; --placeholder: #192431; }
}
@media (max-width: 900px) {
  .reading-section { gap: 36px; grid-template-columns: 1fr 1fr; }
  .voices-layout { gap: 60px; }
  .access-section { gap: 48px; }
  .access-features { grid-template-columns: 1fr; gap: 24px; }
  .format-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 650px) {
  html { scroll-padding-top: 132px; }
  .nav-inner { width: calc(100% - 24px); gap: 7px 20px; flex-wrap: wrap; padding: 9px 0; }
  .section-nav a { font-size: .9rem; padding: 5px 0; }
  .section-nav .nav-download { padding: 6px 12px; }
  .intro { padding: 56px 0 64px; }
  .section-shell { width: calc(100% - 40px); }
  .reading-section { grid-template-columns: 1fr; gap: 40px; padding: 48px 0 64px; }
  .reader-placeholder { min-height: 240px; }
  .formats-section { padding: 48px 0 64px; }
  .format-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 24px; }
  .voices-layout { grid-template-columns: 1fr; gap: 40px; padding: 64px 0; }
  .voices-layout .section-copy { grid-row: 1; }
  .voice-placeholder { width: min(75%, 260px); }
  .access-section { grid-template-columns: 1fr; gap: 40px; padding: 64px 0; }
  .access-features { grid-template-columns: 1fr 1fr; gap: 28px 22px; }
  .download-section { padding: 58px 0 64px; }
  h2 { font-size: 2rem; }
  .eyebrow { margin-bottom: 18px; }
}
@media (max-width: 360px) {
  .access-features { grid-template-columns: 1fr; }
  .placeholder-content { padding: 30px; }
  .format-grid { grid-template-columns: 1fr; gap: 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Localized vector illustrations keep the app's real layout and typography. */
.app-shot { margin: 0; min-width: 0; }
.app-shot img { display: block; width: 100%; height: auto; box-shadow: 0 20px 55px #0003; border-radius: 14px; }
.app-shot figcaption { margin-top: 22px; color: var(--muted); font-size: .76rem; line-height: 1.6; text-align: center; }
.desktop-shot img { transform: perspective(1400px) rotateY(-4deg) rotate(-1deg); }
.phone-shot { width: min(100%, 270px); justify-self: center; }
.phone-shot img { border: 1px solid #666; }
.library-shot img { transform: rotate(2deg); }
.voice-shot img { transform: rotate(-2deg); }
.access-shot img { transform: rotate(1deg); }
.formats-section { display: grid; grid-template-columns: minmax(0, 1fr) 270px; gap: 80px; align-items: center; }
.format-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.access-section { grid-template-columns: minmax(0, 1fr) 270px; gap: 52px 80px; align-items: center; }
.access-features { grid-column: 1 / -1; grid-template-columns: repeat(4, minmax(0, 1fr)); align-self: start; }
@media (max-width: 900px) {
  .formats-section, .access-section { grid-template-columns: minmax(0, 1fr) 230px; gap: 42px; }
  .access-features { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 650px) {
  .formats-section, .access-section { grid-template-columns: 1fr; gap: 38px; }
  .format-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .phone-shot { width: min(75%, 250px); }
  .app-shot img { transform: none; }
}

/* Same demonstration library on Mac and iPhone; other phone shots keep their dark theme. */
/* Columns follow each image aspect ratio so both shots have the same height. */
.shared-library-pair { display: grid; grid-template-columns: minmax(0, 0.477835fr) minmax(0, 1.591444fr); gap: 16px; align-items: start; }
.shared-library-pair > img { transform: none; }
/* Match the Mac screen frame: 60px corners in a 1488 × 935 viewBox. */
.shared-library-pair > .shared-library-desktop { border-radius: 4.032258% / 6.417112%; box-shadow: 0 0 0 1px #fff, 0 12px 28px #0003; }
/* Match the SVG frame (112px corners in a 1024 × 2143 viewBox). */
.shared-library-pair .shared-library-phone { transform: none; border-radius: 10.9375% / 5.2263%; box-shadow: 0 0 0 1px #fff, 0 12px 28px #0003; }
@media (max-width: 650px) {
  .shared-library-pair { gap: 10px; }
}

.supported-platforms { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 18px; list-style: none; padding: 0; margin: 0 0 24px; color: var(--muted); font-size: .78rem; line-height: 1.4; }
.supported-platforms li { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.supported-platforms strong { font-weight: 600; }
.app-shot .supported-platforms img { width: 16px; height: 16px; flex: none; border: 0; border-radius: 0; box-shadow: none; transform: none; filter: var(--secondary-icon-filter); opacity: .65; }

.app-icons { display: flex; justify-content: center; gap: 20px; margin: 0 auto 32px; }
.app-icons .app-icon { margin: 0; }
.platform-tagline { margin: 0 0 10px; text-align: center; color: var(--muted); font-size: .82rem; font-weight: 600; }

.shared-library-pair > .shared-library-desktop:not([data-preview-style="mac"]) { border-radius: .268817% / .427807%; }
.supported-platforms button { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 6px 8px; font: inherit; color: inherit; background: transparent; border: 1px solid var(--border); border-radius: 6px; cursor: pointer; }
.supported-platforms button[aria-pressed="true"] { color: var(--text); border-color: currentColor; text-decoration: underline; text-underline-offset: 4px; }
.supported-platforms button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* Paired light/dark readers share the framed iPhone proportions. */
.access-section { grid-template-columns: minmax(0, 1fr) minmax(0, 500px); gap: 52px; }
.access-phone-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.access-phone-pair img { transform: none; border-radius: 10.9375% / 5.2263%; box-shadow: 0 0 0 1px #fff, 0 12px 28px #0003; }
@media (max-width: 900px) {
  .access-section { grid-template-columns: minmax(0, 1fr) minmax(0, 380px); gap: 28px; }
}
@media (max-width: 650px) {
  .access-section { grid-template-columns: minmax(0, 1fr); }
  .access-shot { width: 100%; max-width: 500px; justify-self: center; }
  .access-phone-pair { gap: 14px; }
}

:root[data-theme="dark"] {
  color-scheme: dark; --background: #000; --text: #f2f5fa; --lead: #c4cedd;
  --muted: #a9b6c9; --border: #64748b; --divider: #303a49;
  --secondary-text: #f2f5fa; --secondary-hover: #182230;
  --secondary-icon-filter: invert(1); --panel: #0e1620;
  --accent: #edb38b; --placeholder: #192431;
}
:root[data-theme="light"] { color-scheme: light; }
.header-controls { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.display-controls { display: flex; align-items: center; gap: 4px; }
.display-controls button { min-width: 40px; min-height: 44px; padding: 6px; font: inherit; font-size: 18px; color: var(--text); background: transparent; border: 1px solid transparent; border-radius: 6px; cursor: pointer; }
.display-controls button[aria-pressed="true"] { border-color: var(--border); }
#text-smaller span { font-size: 16px; }
#text-larger span { font-size: 24px; }
.display-controls button:focus-visible { outline: 3px solid #e69351; outline-offset: 2px; }
.language-bar { position: relative; min-width: 80px; min-height: 44px; align-items: center; border: 1px solid var(--border); border-radius: 8px; }
#language-badge { padding: 10px; font-size: 16px; white-space: nowrap; }
.language-bar select { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.language-bar:focus-within { outline: 3px solid #e69351; outline-offset: 3px; }
@media (max-width: 650px) {
  .site-header { flex-direction: column; padding: 10px 12px 20px; gap: 20px; }
  .header-controls { order: -1; width: 100%; gap: 8px; }
  .company-logo { width: min(100%, 300px); height: auto; }
  .display-controls { gap: 0; }
  .display-controls button { min-width: 36px; }
}

.company-logo img { display: block; width: 100%; height: auto; }