:root {
  color-scheme: light dark;
  --surface: #fff; --soft: #f5f6f7; --ink: #202124; --muted: #60646b;
  --line: #dedfe3; --link: #245c9e; --focus: #245c9e;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 100%;
  background: var(--surface); color: var(--ink);
}
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.7; overflow-wrap: anywhere; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: .25em; text-decoration-thickness: 1px; }
img { display: block; max-width: 100%; height: auto; }
svg { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
button, input, select { font: inherit; }
button, a, input, summary, select { -webkit-tap-highlight-color: transparent; }
:is(a, input, summary, button, select):focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; border-radius: 4px; }
[hidden] { display: none !important; }
section[id], article[id] { scroll-margin-top: 28px; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(2.25rem, 4.1vw, 3.5rem); letter-spacing: -.055em; line-height: 1.22; font-weight: 650; }
h1 span:last-child { color: var(--muted); }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); line-height: 1.35; letter-spacing: -.035em; font-weight: 600; margin-bottom: 20px; }
h3 { font-size: 1.25rem; line-height: 1.5; font-weight: 600; margin-bottom: 12px; }
.shell { width: min(1184px, calc(100% - 80px)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; inset-inline-start: 16px; padding: 12px 20px; background: var(--ink); color: var(--surface); z-index: 20; }
.skip-link:focus { top: 12px; }
.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.header-inner { min-height: 76px; display: flex; align-items: center; gap: 24px; padding-block: 12px; }
.brand { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; font-size: 1rem; font-weight: 650; letter-spacing: -.03em; flex-shrink: 0; min-height: 44px; }
.brand img { border-radius: 9px; flex-shrink: 0; }
nav { display: flex; align-items: center; gap: 24px; }
nav a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; font-size: .875rem; }
nav a:hover, .text-link:hover { text-decoration: underline; }
.site-header nav { margin-inline-start: auto; }
.nav-cta { border: 1px solid var(--line); padding: 4px 16px; border-radius: 9px; gap: 8px; font-weight: 550; }
.nav-cta:hover { border-color: var(--muted); }
.site-settings { position: relative; border: 0; flex-shrink: 0; }
.site-settings summary { min-height: 44px; padding: 8px 0; display: flex; align-items: center; gap: 7px; font-size: .8125rem; font-weight: 500; }
.site-settings summary::after { content: "\2304"; position: static; color: var(--muted); }
.site-settings[open] summary::after { content: "\2303"; }
.settings-current { max-width: 6rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.settings-panel { position: absolute; inset-inline-end: 0; top: calc(100% + 8px); z-index: 10; width: min(272px, calc(100vw - 40px)); padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); box-shadow: 0 8px 32px #0002; }
.site-settings label { display: grid; gap: 4px; font-size: .875rem; color: var(--muted); }
.site-settings label + label { margin-top: 12px; }
.site-settings select { width: 100%; min-width: 0; min-height: 44px; padding: 8px; border: 1px solid var(--line); border-radius: 7px; color: var(--ink); background: var(--surface); cursor: pointer; }
.hero { padding-block: 40px 48px; }
.hero-copy { display: grid; grid-template-columns: 1.05fr 1fr; column-gap: 56px; }
.eyebrow { font-size: .875rem; font-weight: 550; letter-spacing: .035em; margin: 0 0 14px; color: var(--muted); }
.hero-copy .eyebrow { grid-column: 1 / -1; }
.hero-copy h1 { grid-column: 1; grid-row: 2 / 5; margin-bottom: 0; }
.intro { font-size: 1.0625rem; color: var(--muted); line-height: 1.75; margin-bottom: 16px; }
.hero-copy :is(.intro, .hero-actions, .quiet-note) { grid-column: 2; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; gap: 16px; border: 1px solid transparent; border-radius: 9px; padding: 9px 18px; font-size: .9375rem; font-weight: 550; text-decoration: none; }
.primary { background: var(--link); color: var(--surface); }
.secondary { border-color: var(--line); }
.button:hover { text-decoration: underline; text-underline-offset: .3em; }
.secondary:hover { background: var(--soft); }
.platform-note { flex-basis: 100%; font-size: .8125rem; color: var(--muted); }
.quiet-note { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: .8125rem; margin: 6px 0 0; }
.icon { width: 16px; height: 16px; flex-shrink: 0; }
figure { margin: 0; min-width: 0; }
.platform-showcase { display: grid; grid-template-columns: minmax(0, .38fr) minmax(0, 1.05fr) minmax(0, 1.3fr); align-items: end; gap: 20px; width: min(100%, 1056px); margin: 24px auto 0; padding: 24px 24px 12px; background: var(--soft); border-radius: 20px; }
.comparison { --split: 62%; }
.comparison-images { display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; border-radius: 10px; background: var(--soft); direction: ltr; }
.comparison:not(.is-ready) .before { order: -1; }
.image-layer { position: relative; min-width: 0; }
.image-layer img { width: 100%; height: 100%; object-fit: contain; }
.image-tag { position: absolute; top: 12px; right: 12px; max-width: calc(50% - 24px); padding: 4px 10px; border-radius: 6px; background: #fff; color: #202124; font-size: .8125rem; font-weight: 550; }
.before .image-tag { left: 12px; right: auto; }
.comparison-line { display: none; }
.is-ready .comparison-images { position: relative; display: block; aspect-ratio: 3 / 2; cursor: ew-resize; touch-action: pan-y; user-select: none; }
.is-ready .image-layer { position: absolute; inset: 0; }
.is-ready .before { clip-path: inset(0 calc(100% - var(--split)) 0 0); }
.is-ready .comparison-line { display: block; position: absolute; left: var(--split); top: 0; bottom: 0; width: 2px; background: #fff; transform: translateX(-50%); pointer-events: none; }
.comparison-line span { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: #fff; color: #202124; font-size: 1rem; box-shadow: 0 1px 8px #0003; }
.comparison-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; padding-top: 12px; }
.comparison-controls label { font-size: .875rem; color: var(--muted); }
input[type="range"] { flex: 1; min-width: 100px; height: 44px; margin: 0; accent-color: var(--link); cursor: ew-resize; direction: ltr; }
.hero-demo .comparison-images { border: 1px solid var(--line); border-radius: 7px; }
.hero-demo .is-ready .comparison-images { aspect-ratio: 2092 / 1446; }
.hero-demo[data-platform="iPhone"] .is-ready .comparison-images { aspect-ratio: 1206 / 2622; }
.hero-demo[data-platform="iPad"] .is-ready .comparison-images { aspect-ratio: 2420 / 1668; }
.hero-demo picture { display: block; height: 100%; }
.comparison:not(.is-ready) picture, .comparison:not(.is-ready) .image-layer img { height: auto; }
.comparison:not(.is-ready) .image-tag { position: static; display: block; max-width: none; padding: 6px; font-size: .75rem; border-radius: 0; }
.hero-demo .is-ready .image-tag { display: none; }
.hero-demo figcaption { text-align: center; margin-top: 8px; font-size: .875rem; }
.hero-demo :is(.platform-caption, .caption-detail) { display: none; }
.showcase-controls { display: flex; align-items: center; justify-content: center; gap: 14px; width: min(100%, 680px); margin: 12px auto 0; }
.showcase-controls label { font-size: .875rem; color: var(--muted); }
.showcase-controls button { min-height: 44px; border: 1px solid transparent; padding: 4px 10px; border-radius: 7px; background: none; color: var(--ink); cursor: pointer; font-size: .875rem; }
.showcase-controls button:hover { background: var(--soft); }
.showcase-controls button[aria-pressed="true"] { border-color: var(--muted); }
.showcase-note { font-size: .8125rem; color: var(--muted); text-align: center; margin: 4px 0 0; }
.example-gallery { border-top: 1px solid var(--line); padding-block: 48px 56px; }
.section-heading { margin-bottom: 28px; }
.gallery-intro { max-width: 46rem; font-size: 1rem; color: var(--muted); margin-bottom: 0; }
.gallery-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 28px; }
.gallery-filters { display: flex; flex-wrap: wrap; gap: 8px; }
.gallery-filters button { min-height: 44px; padding: 8px 16px; border: 1px solid var(--line); border-radius: 24px; font-size: .875rem; background: var(--surface); color: var(--ink); cursor: pointer; }
.gallery-filters button:hover { border-color: var(--muted); }
.gallery-filters button[aria-pressed="true"] { background: var(--ink); color: var(--surface); border-color: var(--ink); font-weight: 600; }
.gallery-count { color: var(--muted); font-size: .8125rem; }
.photo-wall { columns: 3; column-gap: 24px; }
.photo-wall .example-card { break-inside: avoid; margin-bottom: 28px; }
.photo-pair { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 6px; direction: ltr; text-decoration: none; border-radius: 10px; cursor: zoom-in; }
.pair-photo { display: flex; flex-direction: column; min-width: 0; overflow: hidden; border-radius: 8px; background: var(--soft); }
.pair-photo img { width: 100%; height: auto; }
.pair-label { display: block; background: var(--soft); padding: 6px 10px; font-size: .75rem; color: var(--muted); }
.photo-case figcaption { margin-top: 10px; display: grid; gap: 2px; }
.example-caption { font-size: .9375rem; line-height: 1.5; }
.model-name { font-size: .75rem; color: var(--muted); }
.zoom-hint { position: absolute; right: 8px; top: 8px; width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: #fff; color: #202124; font-size: 1rem; box-shadow: 0 1px 6px #0002; }
.photo-pair:hover { outline: 1px solid var(--muted); outline-offset: 4px; }
.photo-case[data-category="background"] .after, .cutout-comparison .comparison-images { background-color: #e8e8e8; background-image: linear-gradient(45deg, #fff 25%, transparent 25%), linear-gradient(-45deg, #fff 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #fff 75%), linear-gradient(-45deg, transparent 75%, #fff 75%); background-size: 20px 20px; background-position: 0 0, 0 10px, 10px -10px, -10px 0; }
.example-method { border-top: 1px solid var(--line); margin-top: 4px; max-width: 48rem; }
.example-method p { margin-bottom: 12px; }
.example-method .source-link { margin-bottom: 16px; }
.features { border-top: 1px solid var(--line); padding-block: 64px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.feature-icon { width: 30px; height: 30px; margin-bottom: 18px; }
.feature p { color: var(--muted); font-size: .9375rem; margin-bottom: 0; }
.privacy-section { background: var(--soft); }
.privacy-inner { display: grid; grid-template-columns: .7fr 1fr; gap: 80px; align-items: center; padding-block: 64px; }
.privacy-facts { list-style: none; padding: 0; margin: 0; }
.privacy-facts li { padding-block: 22px; border-bottom: 1px solid var(--line); font-size: 1.25rem; font-weight: 550; }
.privacy-facts li:first-child { border-top: 1px solid var(--line); }
.device-status { display: flex; align-items: center; gap: 10px; }
.device-status svg { width: 22px; height: 22px; flex-shrink: 0; }
.privacy-copy > p:not(.eyebrow) { color: var(--muted); }
.small-note { font-size: .8125rem; line-height: 1.8; margin: 20px 0 0; }
.text-link { display: inline-flex; min-height: 44px; align-items: center; gap: 12px; color: var(--link); font-size: .9375rem; text-decoration: none; font-weight: 550; }
.faq { display: grid; grid-template-columns: .7fr 1fr; gap: 80px; padding-block: 72px; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { min-height: 44px; padding: 20px 0; padding-inline-end: 30px; position: relative; cursor: pointer; list-style: none; font-size: 1rem; font-weight: 550; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; inset-inline-end: 3px; top: 20px; }
details[open] summary::after { content: "\2212"; }
details p { font-size: .9375rem; color: var(--muted); padding-inline-end: 20px; margin-bottom: 24px; }
.availability { text-align: center; padding-block: 24px 72px; }
.closing-icon { margin: 0 auto 20px; border-radius: 18px; }
.availability > p:not(.eyebrow), .release-status { font-size: .9375rem; color: var(--muted); }
.release-status { display: flex; align-items: center; justify-content: center; gap: 8px; margin-bottom: 24px; }
.release-status span { width: 6px; height: 6px; background: currentColor; border-radius: 50%; flex-shrink: 0; }
.export-summary { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; max-width: 680px; margin: 0 auto 16px; padding-block: 24px; border-block: 1px solid var(--line); text-align: start; }
.export-summary p { display: grid; align-content: start; gap: 6px; margin: 0; }
.export-summary span { font-size: .875rem; color: var(--muted); }
.site-footer { border-top: 1px solid var(--line); padding-block: 28px; }
.footer-top, .footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-top .brand { font-size: .9375rem; }
.footer-top nav { gap: 24px; flex-wrap: wrap; }
.footer-bottom { margin-top: 24px; color: var(--muted); font-size: .8125rem; }
.footer-bottom a { display: inline-block; padding-block: 8px; margin-inline-start: 12px; }
.locale-links { display: flex; flex-wrap: wrap; gap: 0 20px; margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--line); }
.locale-links a { color: var(--muted); font-size: .8125rem; }
.locale-links [aria-current="page"] { color: var(--ink); text-decoration: underline; }
.legal { max-width: 760px; padding-block: 56px 80px; hyphens: auto; }
.legal h1 { font-size: clamp(2rem, 4vw, 2.75rem); margin-bottom: 14px; }
.legal-intro { color: var(--muted); font-size: 1.0625rem; margin-bottom: 24px; }
.draft-note { padding: 18px 22px; background: var(--soft); border-radius: 10px; color: var(--muted); font-size: .875rem; margin-bottom: 32px; }
.legal nav { flex-wrap: wrap; gap: 0 22px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.legal nav a, .legal article a { color: var(--link); text-decoration: underline; }
.legal article { padding-top: 36px; }
.legal h2 { font-size: 1.4375rem; margin-bottom: 16px; }
.legal article p, .legal article li { font-size: 1rem; color: var(--muted); }
.legal article ul { padding-inline-start: 24px; }
.example-dialog { width: min(1200px, calc(100% - 32px)); max-height: calc(100dvh - 32px); padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); color: var(--ink); overflow: auto; }
.example-dialog::backdrop { background: #000a; }
.dialog-heading { display: flex; justify-content: space-between; align-items: start; gap: 20px; margin-bottom: 20px; }
.dialog-heading h2 { font-size: 1.1875rem; line-height: 1.5; margin: 8px 0 0; }
.dialog-close { min-height: 44px; padding: 8px 16px; border: 1px solid var(--line); border-radius: 9px; color: var(--ink); background: var(--soft); cursor: pointer; flex-shrink: 0; }
.dialog-close:hover { border-color: var(--muted); }
.dialog-comparison { width: min(100%, calc(65dvh * var(--image-ratio, 1.5))); margin-inline: auto; }
.dialog-comparison .comparison-images { aspect-ratio: var(--image-ratio, 1.5); }
.dialog-open { overflow: hidden; }
.dialog-error { margin: 12px 0 0; }
[dir="rtl"] :is(h1, h2, h3) { letter-spacing: normal; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --surface: #151617; --soft: #1e2022; --ink: #f0f1f2; --muted: #b0b4bc; --line: #373a40; --link: #9dc8ff; --focus: #9dc8ff; }
}
:root[data-theme="dark"] { color-scheme: dark; --surface: #151617; --soft: #1e2022; --ink: #f0f1f2; --muted: #b0b4bc; --line: #373a40; --link: #9dc8ff; --focus: #9dc8ff; }
:root[data-theme="light"] { color-scheme: light; }
@media (max-width: 1000px) {
  .shell { width: calc(100% - 48px); }
  .header-inner { gap: 18px; flex-wrap: wrap; }
  .hero-copy { column-gap: 28px; }
  .photo-wall { columns: 2; }
  .privacy-inner, .faq { gap: 40px; }
}
@media (max-width: 760px) {
  .shell { width: calc(100% - 40px); }
  .header-inner { gap: 4px 12px; padding-block: 8px; }
  .brand { font-size: .875rem; gap: 6px; }
  .brand img { width: 32px; height: 32px; }
  .site-settings { order: 2; margin-inline-start: auto; }
  .settings-current { max-width: 4rem; }
  .site-header nav { order: 3; width: 100%; gap: 18px; margin: 0; flex-wrap: wrap; }
  .site-header .nav-cta { margin-inline-start: auto; }
  .hero { padding-block: 28px 36px; }
  .hero-copy { display: block; }
  .hero-copy h1 { margin-bottom: 20px; }
  .hero-copy .quiet-note { margin-top: 8px; }
  .platform-showcase { grid-template-columns: minmax(0, .45fr) minmax(0, 1fr); gap: 16px; padding: 16px 12px 12px; }
  .hero-demo[data-platform="Mac"] { grid-column: 1 / -1; }
  .showcase-controls { flex-wrap: wrap; gap: 4px 8px; }
  .showcase-controls label { flex-basis: 100%; text-align: center; }
  .showcase-controls input { width: 0; }
  .showcase-controls button { max-width: 32%; }
  .showcase-note { margin-top: 8px; }
  .example-gallery, .features { padding-block: 40px; }
  .gallery-filters { gap: 6px; }
  .gallery-filters button { padding-inline: 12px; }
  .photo-wall { columns: 1; }
  .feature-grid { grid-template-columns: 1fr; gap: 28px; }
  .feature { display: grid; grid-template-columns: 30px 1fr; column-gap: 16px; }
  .feature-icon { grid-row: span 2; margin-top: 3px; }
  .feature p { grid-column: 2; }
  .privacy-inner, .faq { grid-template-columns: 1fr; gap: 28px; padding-block: 44px; }
  .privacy-copy { grid-row: 1; }
  .privacy-facts li { font-size: 1.0625rem; padding-block: 16px; }
  .faq .section-heading { margin-bottom: 0; }
  .availability { padding-block: 16px 48px; }
  .export-summary { grid-template-columns: 1fr; gap: 20px; }
  .footer-top { align-items: flex-start; flex-direction: column; gap: 8px; }
  .footer-top nav { gap: 12px 20px; }
  .footer-bottom { gap: 8px; margin-top: 16px; }
  .legal { padding-block: 36px 56px; }
  .example-dialog { padding: 16px; }
  .dialog-heading { gap: 12px; }
  .dialog-heading h2 { font-size: 1rem; }
}
@media (prefers-contrast: more) {
  :root { --muted: var(--ink); --line: var(--ink); }
}
@media (forced-colors: active) {
  .button, .image-tag, .comparison-line span, .zoom-hint { border: 1px solid ButtonText; }
  .comparison-line { background: CanvasText; }
  .image-tag, .zoom-hint { color: CanvasText; background: Canvas; }
  button[aria-pressed="true"] { outline: 2px solid Highlight; }
}
@media (prefers-reduced-motion: no-preference) {
  .button, .gallery-filters button { transition: background-color .15s, border-color .15s; }
}
@media print {
  .site-header, .site-footer, .skip-link, .legal nav, .gallery-toolbar, .showcase-controls { display: none; }
  :root { --surface: #fff; --ink: #000; --muted: #222; }
  .legal { padding: 0; width: 100%; max-width: none; }
  .legal article { break-inside: avoid; }
}