:root {
  color-scheme: light;
  --blue: #1377d8; --card: #ecf6ff; --ink: #0b1f33; --muted: #294b68;
  --card-secondary: #e4f1fc; --mini-panel: #ddedfc; --border: #439eee; --domain: #3880f0;
  --control-fill: rgb(41 75 104 / .065);
  --widget-fill: radial-gradient(ellipse at 0 0, rgb(56 128 240 / .075), transparent 72%), linear-gradient(180deg, rgb(255 255 255 / .34), transparent 45%), linear-gradient(180deg, #ecf6ff, #c9e5fa);
  --ease-out: cubic-bezier(.23, 1, .32, 1); --ease-soft: cubic-bezier(.32, .72, 0, 1); --ease-in-out: cubic-bezier(.77, 0, .175, 1);
  --content: min(1200px, calc(100% - 64px)); --header-width: min(1248px, calc(100% - 32px));
  --type-section: clamp(40px, 4.2vw, 60px); --type-card: clamp(28px, 2.7vw, 36px); --type-body: 18px; --type-label: 14px;
  --type-cta: 15px; --type-control: 14px; --type-nav: 14px; --type-subheading: 20px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
html { background: var(--blue); scroll-behavior: smooth; scroll-padding-top: 118px; }
/* Welta's light-theme palette, on fixed layers that only transform or fade. */
body { overflow-anchor: none; display: flow-root; position: relative; isolation: isolate; margin: 0; min-width: 320px; color: white; background: var(--blue); }
.site-atmosphere { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; background: linear-gradient(145deg, #1377d8, #2089e5 60%, #197edc); }
.atmosphere-light { position: absolute; inset: 0; opacity: .12; background: linear-gradient(155deg, #309ff1, #43a5f0 55%, #2996ee); }
.atmosphere-glow { position: absolute; inset: -18%; }
.atmosphere-glow-air { background: radial-gradient(ellipse 44vw 48vh at 88% 35%, rgb(154 211 255 / .34), transparent 85%), linear-gradient(135deg, rgb(87 174 248 / .08), transparent 50%); }
.atmosphere-glow-water { background: radial-gradient(ellipse 55vw 42vh at 45% 86%, rgb(189 239 255 / .26), transparent 85%), linear-gradient(180deg, rgb(255 255 255 / .04), transparent); }
@media (prefers-reduced-motion: no-preference) {
  .atmosphere-light { transition: opacity 100ms linear; }
  .atmosphere-glow { transition: transform 100ms linear; }
}
main { overflow: clip; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
[hidden] { display: none !important; }
a:focus-visible, button:focus-visible { outline: 3px solid #0756b3; outline-offset: 5px; border-radius: 8px; }
img { display: block; max-width: 100%; height: auto; }
figure, p { margin: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 650; letter-spacing: -.035em; }
h1, h2 { text-wrap: balance; }
h2 { font-size: var(--type-section); line-height: 1.08; }
h3 { font-size: var(--type-card); line-height: 1.15; }
p { line-height: 1.6; }
.section-container { width: var(--content); margin-inline: auto; }
.feature-widget, .launch-inner { color: var(--ink); background: var(--widget-fill); padding: 36px; border: 1px solid rgb(255 255 255 / .6); border-radius: 28px; box-shadow: 0 10px 24px rgb(6 76 146 / .16), inset 0 1px 0 rgb(255 255 255 / .8); }
.feature-widget > p { font-size: var(--type-body); }
.site-header { position: fixed; z-index: 20; top: 20px; left: 0; right: 0; width: var(--header-width); margin: 0 auto; min-height: 76px; padding: 14px 20px; display: flex; align-items: center; justify-content: space-between; gap: 24px; background: rgb(236 246 255 / .98); color: var(--ink); border: 1px solid rgb(255 255 255 / .7); border-radius: 24px; box-shadow: 0 8px 28px rgb(6 76 146 / .18); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 18px; letter-spacing: -.035em; font-weight: 650; }
.brand > span { white-space: nowrap; }
.brand img { border-radius: 11px; flex-shrink: 0; }
.brand-subtitle { font-weight: inherit; }
.site-header nav { margin-left: auto; display: flex; gap: 20px; align-items: center; font-size: 14px; font-weight: 500; white-space: nowrap; }
.site-header nav a { display: inline-flex; align-items: center; min-height: 44px; }
.header-launch { min-height: 44px; padding: 10px 18px; border-radius: 100px; background: #0b6fe8; color: white; display: inline-flex; align-items: center; justify-content: center; gap: 16px; font-size: 14px; font-weight: 550; white-space: nowrap; transition: transform 150ms var(--ease-out); }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; background: var(--card); color: var(--ink); padding: 12px 18px; border-radius: 100px; font-size: var(--type-label); font-weight: 550; letter-spacing: .02em; white-space: nowrap; }
.hero { display: grid; grid-template-columns: 1fr 1.08fr; gap: 40px; align-items: center; min-height: min(920px, 100dvh); padding-block: 138px 64px; }
.hero-copy { min-width: 0; width: 100%; container-type: inline-size; }
.hero-copy > .eyebrow { width: fit-content; margin-bottom: 28px; }
.hero h1 { font-size: 12.5cqw; line-height: 1.03; }
.hero h1 span { color: #fff; }
.hero-widget { margin-top: 30px; padding: 28px; }
.hero-widget .hero-description { font-size: 21px; line-height: 1.5; }
.hero-actions, .launch-actions { display: flex; align-items: center; gap: 12px; margin-top: 24px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 20px; min-height: 50px; padding: 14px 20px; border-radius: 100px; font-size: var(--type-cta); font-weight: 600; white-space: nowrap; transition: transform 150ms var(--ease-out); }
.button-light { color: white; background: #0b6fe8; }
.button-paper { background: #ecf6ff; color: var(--ink); }
.button-glass { background: rgb(236 246 255 / .16); color: white; border: 1px solid rgb(236 246 255 / .45); }
.button-store { color: var(--ink); background: var(--control-fill); }

.app-store-icon { width: 24px; height: 24px; flex-shrink: 0; }
.button[aria-disabled="true"] { opacity: .7; cursor: default; pointer-events: none; }
.button:active:not(:focus-visible), .header-launch:active:not(:focus-visible) { transform: scale(.97); }
.hero-art { position: relative; width: 100%; aspect-ratio: .8; }
.hero-phone { position: absolute; width: 54%; aspect-ratio: 1060 / 2160; filter: drop-shadow(0 20px 22px rgb(4 54 105 / .25)); }
/* An opaque screen bleeds six source pixels under the antialiased hardware edge. */
.hero-display { position: absolute; left: 4.622642%; top: 2.083333%; width: 90.754717%; height: 95.925926%; border-radius: 16.2162% / 7.529%; overflow: hidden; }
.hero-display img { width: 100%; height: 100%; object-fit: fill; }
.hero-hardware { position: relative; width: 100%; pointer-events: none; }
.hero-phone-dark { top: 5%; left: 0; }
.hero-phone-light { top: 0; right: 0; }
.insight-section { padding-block: 24px 56px; }
.insight-widget { display: grid; grid-template-columns: .9fr 1.3fr; gap: 64px; align-items: center; }
.insight-intro > p { margin-block: 20px; max-width: 38ch; color: white; font-size: var(--type-body); }
.insight-intro .text-link { color: white; }
.insight-intro .example-note { font-size: 13px; opacity: .82; }
.insight-demo { min-width: 0; }
.insight-choices { display: flex; overflow-x: auto; gap: 4px; padding: 5px; background: rgb(236 246 255 / .94); border-radius: 18px; margin-bottom: 20px; scrollbar-width: none; }
.insight-choices::-webkit-scrollbar { display: none; }
.insight-choices button { flex-shrink: 0; min-height: 44px; padding: 10px 14px; border: 0; border-radius: 14px; background: transparent; color: var(--muted); font-size: 14px; font-weight: 550; cursor: pointer; }
.insight-choices button[aria-pressed="true"] { background: #0b6fe8; color: white; }
.regular-insight { display: flex; align-items: center; gap: 8px; padding: 24px; border-radius: 24px; background: var(--widget-fill); color: var(--ink); box-shadow: 0 9px 22px rgb(6 76 146 / .16), inset 0 1px 0 rgb(255 255 255 / .65); }
.regular-insight > img { width: 40px; height: 40px; flex-shrink: 0; }
.regular-insight > p { font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif; font-size: 18px; font-weight: 300; line-height: 1.45; transition: opacity 150ms var(--ease-soft); }
.regular-insight[data-switching] > p { opacity: 0; }
.regular-insight[data-instant] > p { transition: none; }
.context-note { color: var(--muted); font-size: 14px; line-height: 1.5; margin-top: 16px; }
.preview-controls { display: flex; gap: 4px; padding: 5px; background: var(--control-fill); border-radius: 18px; width: fit-content; }
.preview-controls button { min-height: 44px; padding: 10px 17px; border: 0; border-radius: 14px; color: var(--muted); background: transparent; cursor: pointer; font-size: var(--type-label); font-weight: 550; }
.preview-controls button[aria-pressed="true"] { color: white; background: #0b6fe8; box-shadow: 0 3px 8px rgb(6 76 146 / .1); }
.preview-section { padding-block: 40px 72px; }
.preview-intro, .section-heading { text-align: center; margin-bottom: 36px; }
.app-preview { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: center; width: 100%; }
.preview-widget { min-width: 0; }
.preview-widget .preview-controls { margin-bottom: 28px; }
.preview-visual { display: grid; justify-items: center; gap: 24px; padding-inline: 40px; min-width: 0; }
.preview-visual .preview-theme-controls { justify-self: end; background: rgb(236 246 255 / .94); }
.preview-screen { width: min(290px, 100%); filter: drop-shadow(0 16px 24px rgb(4 54 105 / .24)); }
.preview-toolbar { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.preview-copy { min-width: 0; }
.preview-theme-controls { display: flex; align-items: center; gap: 5px; padding: 5px; background: rgb(41 75 104 / .10); border-radius: 18px; }
.preview-theme-controls > span { color: var(--muted); font-size: var(--type-label); margin-inline: 10px 8px; }
.preview-theme-controls button { min-height: 44px; padding: 10px 15px; font-size: var(--type-label); border: 0; border-radius: 14px; background: transparent; color: var(--muted); cursor: pointer; }
.preview-theme-controls button[aria-pressed="true"] { color: white; background: #0b6fe8; box-shadow: 0 3px 8px rgb(6 76 146 / .1); }
.preview-theme-controls[data-available="false"] { visibility: hidden; }
.preview-description { max-width: 610px; margin-bottom: 20px; }
.feature-label { color: var(--muted); font-size: var(--type-label); font-weight: 500; letter-spacing: .01em; }
.preview-description .feature-label { text-transform: none; }
.preview-description h3 { margin: 0 0 18px; font-size: var(--type-card); }
.preview-description > p:last-child { color: var(--muted); font-size: var(--type-body); line-height: 1.6; }
.preview-details { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; max-width: 610px; }
.preview-details span { display: flex; align-items: center; min-height: 54px; padding: 12px 16px; border-radius: 14px; background: var(--control-fill); color: var(--muted); font-size: var(--type-label); line-height: 1.4; }
.preview-screen img { width: 100%; }
.preview-description, .preview-details, .preview-screen { transition: opacity 150ms var(--ease-soft); }
.app-preview[data-switching]:not([data-image-only]) .preview-description, .app-preview[data-switching]:not([data-image-only]) .preview-details { opacity: 0; }
.app-preview[data-switching] .preview-screen { opacity: 0; }
.app-preview[data-image-only] .preview-screen { transform: none; }
.app-preview[data-instant] .preview-description, .app-preview[data-instant] .preview-details, .app-preview[data-instant] .preview-screen { transition: none; }
.engine-section { padding-block: 32px 72px; }
.engine-widget { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.engine-copy h3 { margin: 0 0 20px; }
.engine-copy p:not(.feature-label) { margin-bottom: 18px; color: var(--muted); font-size: var(--type-body); }
.engine-steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.engine-steps li { display: grid; grid-template-columns: 24px 1fr; gap: 15px; border-radius: 18px; padding: 22px; background: var(--control-fill); }
.step-number { color: #0756b3; font-size: var(--type-label); align-self: center; }
.engine-steps h4 { font-size: 20px; line-height: 1.3; margin-bottom: 9px; }
.engine-steps p { color: var(--muted); font-size: 16px; }
.text-link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; color: #0756b3; font-size: 16px; font-weight: 550; }
.ai-section { --ai-art-height: clamp(420px, 58vw, 700px); padding-block: 48px 64px; }
.ai-intro-widget { max-width: 800px; margin: 28px auto 0; font-size: var(--type-body); }
.ai-gallery { display: grid; grid-template-columns: 1fr 1fr; align-items: start; gap: 64px; width: 100%; margin-top: 48px; }
.ai-scene { display: flex; flex-direction: column; align-items: center; }
.ai-scene figcaption { width: min(340px, 100%); display: grid; gap: 7px; padding: 22px 24px; border-radius: 24px; color: var(--ink); background: var(--widget-fill); margin-bottom: 28px; font-size: 20px; font-weight: 550; }
.ai-scene img { width: auto; height: var(--ai-art-height); max-width: none; object-fit: contain; filter: drop-shadow(0 16px 20px rgb(5 57 110 / .2)); }
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; padding-block: 72px; }
.feature-copy { min-width: 0; }
.feature-copy .feature-widget { width: 100%; margin-top: 28px; }
.product-art img { width: 100%; max-height: 760px; object-fit: contain; filter: drop-shadow(0 18px 22px rgb(5 57 110 / .2)); }
.feature-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.feature-tags span { background: var(--control-fill); color: var(--muted); border-radius: 14px; font-size: var(--type-label); padding: 10px 14px; line-height: 1.4; }
.privacy { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding-block: 64px; }
.privacy-heading { display: flex; align-items: center; }
.privacy-heading h2 { font-size: clamp(36px, 4vw, 56px); color: white; }
.privacy-details p { margin-bottom: 18px; color: var(--muted); font-size: 17px; }
.faq-section { padding-block: 24px 72px; }
.faq-widget { width: 100%; padding: 36px; }
.faq-intro { margin-bottom: 30px; text-align: center; }
.faq-widget details { contain: layout; border-radius: 18px; background: var(--control-fill); }
.faq-widget details + details { margin-top: 10px; }
.faq-widget summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 24px; list-style: none; cursor: pointer; font-size: 18px; line-height: 1.4; font-weight: 550; }
.faq-widget summary::-webkit-details-marker { display: none; }
.faq-widget summary:focus-visible { outline: 3px solid #0756b3; outline-offset: 3px; border-radius: 18px; }
.faq-widget summary span { font-size: 26px; font-weight: 400; }
.faq-widget details[open] summary span { transform: rotate(45deg); }
.faq-answer > p { padding: 0 24px 24px; max-width: 850px; color: var(--muted); font-size: 17px; line-height: 1.7; }
.faq-widget .text-link { display: inline; font-size: inherit; }
.faq-widget details[data-motion] { overflow: hidden; }
.faq-widget details[data-motion] summary span { transition: transform 200ms var(--ease-out); }
.faq-widget details[data-expanded="false"] summary span { transform: rotate(0); }
.launch { padding-block: 0 72px; }
.launch-inner { width: 100%; padding: 24px 0; display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; background: none; color: white; border: 0; border-radius: 0; box-shadow: none; text-align: left; }
.launch-inner h2 { font-size: clamp(36px, 4vw, 56px); }
.launch-prompt { padding: 28px; }
.launch-prompt h3 { font-size: var(--type-card); }
.launch-actions { justify-content: flex-start; margin-top: 22px; flex-wrap: wrap; }
.launch-actions .button[aria-disabled="true"] { opacity: 1; }
.site-footer { margin-bottom: 24px; padding: 24px 32px; border-radius: 28px; background: var(--widget-fill); color: var(--ink); }
.footer-top { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-bottom: 12px; }
.footer-top nav { display: flex; flex-wrap: wrap; gap: 24px; font-size: var(--type-label); }
.footer-top nav a { min-height: 44px; display: flex; align-items: center; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; border-top: 1px solid rgb(41 75 104 / .12); padding-block: 14px 0; }
.footer-support { display: flex; align-items: center; font-size: 14px; white-space: nowrap; }
.footer-support a:last-child { color: var(--ink); font-size: 18px; font-weight: 700; }
.social-links { display: flex; align-items: center; gap: 8px; }
.social-links a { display: grid; place-items: center; width: 44px; height: 44px; background: var(--control-fill); border-radius: 14px; }
.social-links a[aria-disabled="true"] { cursor: default; }
.story-dialog { width: min(680px, calc(100% - 40px)); max-height: calc(100dvh - 64px); overflow: auto; border: 1px solid white; border-radius: 28px; padding: 30px; color: var(--ink); background: var(--widget-fill); box-shadow: 0 32px 100px rgb(4 35 65 / .3); transform-origin: center; transition: opacity 250ms var(--ease-out), transform 250ms var(--ease-out); }
.story-dialog::backdrop { background: rgb(5 36 68 / .45); transition: opacity 250ms var(--ease-out); }
.story-dialog[data-starting-style], .story-dialog[data-ending-style] { opacity: 0; transform: translateY(8px) scale(.96); }
.story-dialog[data-starting-style]::backdrop, .story-dialog[data-ending-style]::backdrop { opacity: 0; }
.story-dialog[data-instant], .story-dialog[data-instant]::backdrop { transition: none; }
.story-dialog-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 16px; margin-bottom: 20px; }
.story-close { display: grid; place-items: center; border: 0; width: 44px; height: 44px; background: var(--control-fill); border-radius: 50%; cursor: pointer; }
.story-dialog h2 { font-size: var(--type-card); margin-bottom: 24px; }
.story-dialog h3 { font-size: 22px; margin: 24px 0 14px; }
.story-dialog p { font-size: 17px; color: var(--muted); margin-bottom: 16px; }
.story-dialog p a { color: #0756b3; text-decoration: underline; }
.story-dialog > .text-link { margin-top: 12px; }
@media (hover: hover) and (pointer: fine) {
  .button:hover, .header-launch:hover { transform: translateY(-2px); }
  .site-header nav a:hover, .footer-top nav a:hover, .text-link:hover { text-decoration: underline; text-underline-offset: 5px; }
}
@media (prefers-reduced-motion: no-preference) {
  .hero-phone { animation: phone-arrive 380ms var(--ease-out) both; }
  .hero-phone-light { animation-delay: 60ms; }
  .hero-copy > h1 { animation: copy-arrive 320ms var(--ease-out) both; }
  .reveal { transition: opacity 320ms var(--ease-out), transform 320ms var(--ease-out); }
  .reveal[data-pending] { opacity: 0; transform: translateY(8px); }
  @view-transition { navigation: auto; }
  html[data-page-enter] main { animation: page-in 200ms var(--ease-out) both; }
  ::view-transition-old(root) { animation: page-out 200ms var(--ease-out) both; }
  ::view-transition-new(root) { animation: page-in 200ms var(--ease-out) both; }
  ::view-transition-group(site-header), ::view-transition-new(site-header) { animation: none; }
  ::view-transition-old(site-header) { animation: none; opacity: 0; }
}
.site-header { view-transition-name: site-header; }
.nav-short { display: none; }
.header-launch .store-label { font-size: 14px; line-height: 1.2; }
@keyframes phone-arrive { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes copy-arrive { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes page-out { to { opacity: 0; } }
@keyframes page-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@media (max-width: 1023px) {
  .site-header { gap: 14px; padding-inline: 16px; }
  .site-header .brand { font-size: 16px; }
  .site-header nav { gap: 14px; font-size: 13px; }
  .site-header .nav-full { display: none; }
  .site-header .nav-short { display: inline; }
  .hero { gap: 28px; min-height: 0; }
  .hero-widget { padding: 22px; }
  .hero-widget .hero-description { font-size: 18px; }
  .hero-actions { gap: 8px; }
  .hero-actions .button { padding-inline: 13px; font-size: 13px; gap: 10px; }
  .preview-controls button { padding-inline: 12px; }
  .preview-theme-controls > span { display: none; }

  .insight-widget { gap: 32px; }
  .feature { gap: 36px; }
  .feature-widget { padding: 28px; }
}
@media (max-width: 767px) {
  :root { --content: calc(100% - 32px); --header-width: calc(100% - 16px); --type-display: 2.25rem; --type-section: 2rem; --type-card: 1.5rem; --type-subheading: 1.125rem; --type-body: 1rem; --type-cta: .9375rem; --type-control: .8125rem; --type-label: .75rem; --type-nav: .75rem; }
  html { scroll-padding-top: 96px; }
  .site-header { top: 10px; display: flex; gap: 8px; padding: 8px 10px; border-radius: 20px; min-height: 60px; }
  .site-header .brand > span { display: none; }
  .site-header .nav-full { display: none; }
  .site-header .nav-short { display: inline; }
  .site-header .brand { gap: 8px; font-size: var(--type-body); }
  .site-header .brand img { width: 34px; height: 34px; }
  .site-header .brand-subtitle { display: block; font-size: var(--type-label); letter-spacing: -.015em; line-height: 1.2; margin-top: 4px; }
  .site-header nav { flex: 1; justify-content: space-evenly; margin: 0; gap: 8px; font-size: var(--type-control); }
  .header-launch { width: auto; min-height: 40px; flex-shrink: 0; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block: 116px 32px; }
  .hero-copy { text-align: center; max-width: none; }
  .hero h1 { font-size: var(--type-display); }
  .hero-copy > .eyebrow { margin-inline: auto; font-size: var(--type-control); margin-bottom: 24px; }
  .hero-widget { padding: 24px; margin-top: 24px; }
  .hero-widget .hero-description { font-size: var(--type-body); }
  .hero-actions { justify-content: center; gap: 8px; }
  .hero-actions .button { font-size: var(--type-cta); padding-inline: 8px; gap: 12px; }
  .hero-art { width: 100%; max-width: none; }
  .insight-section, .preview-section, .engine-section, .ai-section { padding-block: 28px 48px; }
  .insight-widget { grid-template-columns: 1fr; gap: 24px; }
  .insight-intro > p { max-width: none; }
  .insight-intro h2 { font-size: var(--type-section); }
  .regular-insight { padding: 20px; }
  .regular-insight > img { width: 38px; height: 38px; }
  .regular-insight > p { font-size: var(--type-body); }
  .app-preview { grid-template-columns: 1fr; gap: 28px; }
  .preview-visual { padding-inline: 0; }
  .preview-widget .preview-controls { margin-bottom: 24px; }
  .preview-toolbar { flex-wrap: wrap; gap: 12px; }
  .preview-controls { width: 100%; justify-content: space-between; }
  .preview-controls button { padding-inline: 11px; font-size: var(--type-control); }
  .preview-theme-controls { margin-left: auto; }
  .preview-theme-controls > span { display: inline; font-size: var(--type-control); }
  .preview-theme-controls button { font-size: var(--type-control); min-height: 40px; }
  .preview-theme-controls[data-available="false"] { visibility: hidden; }

  .preview-description > p:last-child { font-size: var(--type-body); }
  .preview-details span { padding: 10px 12px; font-size: var(--type-label); min-height: 57px; }
  .preview-screen { width: min(230px, 85%); margin: 0 auto; }
  .feature-widget { padding: 24px; border-radius: 24px; }
  .engine-widget { grid-template-columns: 1fr; gap: 24px; }
  .engine-copy p:not(.feature-label) { font-size: var(--type-body); }
  .engine-steps li { padding: 18px; }
  .ai-intro-widget { width: 100%; }
  .ai-gallery { gap: 40px; grid-template-columns: 1fr; }
  .ai-section { --ai-art-height: min(700px, calc((100vw - 32px) * 1.68)); }
  .feature { grid-template-columns: 1fr; gap: 28px; padding-block: 48px; }
  .feature-copy { grid-row: 1; }
  .feature-copy > h2 { text-align: center; }
  .product-art { max-width: 480px; margin: 0 auto; width: 100%; }
  .product-art img { max-height: 740px; }
  .privacy { grid-template-columns: 1fr; gap: 20px; padding-block: 48px; }
  .privacy-heading { justify-content: flex-start; text-align: left; }
  .faq-section { padding-block: 12px 48px; }
  .faq-widget { padding: 20px; }
  .faq-widget summary { padding: 18px; font-size: var(--type-body); }
  .faq-answer > p { font-size: var(--type-body); padding: 0 18px 20px; }
  .launch { padding-block: 0 48px; }
  .launch-inner { grid-template-columns: 1fr; padding: 16px 0; gap: 22px; }
  .launch-inner h2 { grid-row: 1; font-size: var(--type-section); }
  .launch-prompt { padding: 20px; }
  .launch-actions { gap: 8px; }
  .launch-actions .button { padding-inline: 12px; font-size: var(--type-cta); gap: 8px; }
  .launch-brand { gap: 14px; }
  .launch-icons img { width: 42px; height: 42px; border-radius: 12px; }
  .launch-brand p { font-size: 15px; }
  .site-footer { padding: 24px; margin-bottom: 16px; border-radius: 24px; }
  .footer-top { flex-direction: row; align-items: center; gap: 12px; }
  .footer-top .brand > span, .footer-top .nav-full { display: none; }
  .footer-top .brand img { width: 34px; height: 34px; }
  .footer-top .nav-short { display: inline; }
  .footer-top nav { flex: 1; flex-wrap: nowrap; justify-content: space-between; gap: 6px; font-size: var(--type-control); }
  .footer-bottom { gap: 8px; }
  .footer-support a:last-child { font-size: .875rem; }
  .social-links { gap: 5px; }
  .social-links a { width: 40px; height: 44px; }
  .story-dialog { padding: 24px; max-height: calc(100dvh - 32px); width: calc(100% - 32px); border-radius: 24px; }
}
@media (max-width: 374px) {
  .site-header .brand img { width: 30px; height: 30px; }
  .site-header .brand-subtitle { font-size: var(--type-label); }
  .site-header nav { gap: 5px; font-size: var(--type-label); }
  .hero-actions .button { padding-inline: 8px; font-size: var(--type-cta); gap: 8px; }
  .hero-widget .hero-description { font-size: var(--type-body); }
  .launch-actions .button { padding-inline: 10px; }
  .preview-controls button { padding-inline: 8px; font-size: var(--type-label); }

  .regular-insight { padding: 16px; }
  .feature-tags span { font-size: var(--type-label); }
  .footer-top .brand img { width: 30px; height: 30px; }
  .footer-top nav { font-size: var(--type-label); }
  .footer-bottom { flex-wrap: nowrap; gap: 6px; }
  .site-footer { padding: 20px 12px; }
  .footer-support a:last-child { font-size: .875rem; }
  .footer-bottom .social-links { gap: 4px; margin-left: 0; }
  .footer-bottom .social-links a { width: 36px; height: 40px; }
  .social-links { margin-left: auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button, .header-launch, .reveal, .engine-steps li, .preview-description, .preview-details, .preview-screen, .regular-insight, .faq-widget details[data-motion], .faq-widget details[data-motion] .faq-answer, .faq-widget details[data-motion] summary span, .story-dialog, .story-dialog::backdrop { transition: none; }
  .button:hover, .button:active, .header-launch:hover, .header-launch:active, .reveal, .engine-steps li { transform: none; }
  .reveal { opacity: 1; }
  .hero-phone, .hero-copy > h1 { animation: none; }
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none; }
}

html[data-instant-navigation] .hero-phone, html[data-instant-navigation] .hero-copy > h1 { animation: none; }

/* Six original chapters, progressively enhanced into a scroll-driven story. */
.feature-story { overflow-anchor: none; --story-top: 112px; --story-gap: 24px; padding-block: 24px 48px; }
.story-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; padding-block: 48px; }
.story-panel .feature-copy { grid-column: 1; grid-row: 1; }
.story-panel .product-art, .story-panel .ai-gallery { grid-column: 2; grid-row: 1; }
.story-panel .ai-gallery { gap: 20px; margin: 0; grid-template-columns: minmax(0, 1.21fr) minmax(0, 1fr); grid-template-rows: minmax(0, 1fr); }
.story-panel .ai-scene img { width: 100%; height: auto; max-width: 100%; object-fit: contain; }
.story-panel .ai-scene figcaption { font-size: 22px; line-height: 1.25; color: white; background: none; padding: 0; margin-bottom: 12px; text-align: center; border-radius: 0; width: 100%; }
.story-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.story-nav { display: flex; gap: 4px; padding: 5px; background: rgb(236 246 255 / .94); border-radius: 18px; }
.story-nav button { border: 0; border-radius: 14px; min-height: 44px; padding: 10px 18px; color: var(--muted); background: transparent; cursor: pointer; font-size: 14px; font-weight: 550; }
.story-nav button[aria-pressed="true"] { background: #0b6fe8; color: white; }
.feature-story[data-mode="scroll"] { padding-block: 0; }
.feature-story[data-mode="scroll"] .story-stage { position: sticky; top: var(--story-top); height: min(740px, calc(100svh - var(--story-top) - 20px)); }
.feature-story[data-mode] .story-track { display: grid; width: 100%; }
.feature-story[data-mode] .story-panel { grid-area: 1 / 1; min-width: 0; padding: 0; opacity: 0; pointer-events: none; }
.feature-story[data-mode] .story-panel[aria-hidden="false"] { pointer-events: auto; }
.feature-story[data-mode="scroll"] .story-viewport { height: calc(100% - 78px); overflow: visible; }
.feature-story[data-mode="scroll"] .story-track { height: 100%; grid-template-rows: minmax(0, 1fr); }
.feature-story[data-mode="scroll"] .story-panel { height: 100%; min-height: 0; grid-template-rows: minmax(0, 1fr); }
/* A short compositor transition bridges coarse wheel/trackpad event steps. */
.feature-story[data-mode="scroll"] .story-panel { transition: opacity 100ms linear; }
.feature-story[data-mode="scroll"] .story-panel h2 { font-size: clamp(36px, 4.1vw, 56px); }
.feature-story[data-mode="scroll"] .feature-widget { padding: 28px; margin-top: 20px; }
.feature-story[data-mode="scroll"] .feature-widget > p { font-size: 17px; }
.feature-story[data-mode="scroll"] .product-art { height: 100%; min-height: 0; width: 100%; }
.feature-story[data-mode="scroll"] .product-art img { width: 100%; height: 100%; max-height: none; object-fit: contain; }
.feature-story[data-mode="scroll"] .ai-gallery { height: 100%; min-height: 0; }
.feature-story[data-mode="scroll"] .ai-scene { display: grid; grid-template-rows: auto minmax(0, 1fr); gap: 8px; height: 100%; min-height: 0; }
.feature-story[data-mode="scroll"] .ai-scene img { height: 100%; width: 100%; min-height: 0; object-fit: contain; }
.feature-story[data-mode="compact"] .story-panel { align-items: start; }
.feature-story[data-mode="compact"] .product-art img { max-height: 420px; }
.feature-story[data-mode="compact"] .ai-scene img { height: 380px; width: 100%; }
.feature-story[data-direct] .story-panel { transition: opacity 250ms var(--ease-soft); }
.feature-story[data-instant] .story-panel { transition: none; }
@media (max-width: 767px) {
  .feature-story { --story-top: 88px; --story-gap: 16px; }
  .story-toolbar { gap: 8px; margin-bottom: 16px; }
  .story-nav { min-width: 0; width: 100%; overflow-x: auto; justify-content: flex-start; gap: 4px; padding: 4px; border-radius: 15px; scrollbar-width: none; }
  .story-nav::-webkit-scrollbar { display: none; }
  .story-nav button { flex-shrink: 0; min-height: 44px; padding: 10px 14px; font-size: var(--type-control); border-radius: 11px; white-space: nowrap; }
  .story-panel { grid-template-columns: 1fr; gap: 20px; }
  .story-panel .feature-copy { grid-row: 1; }
  .story-panel .product-art, .story-panel .ai-gallery { grid-column: 1; grid-row: 2; }
  .story-panel .ai-gallery { gap: 14px; }
  .feature-story[data-mode="scroll"] .story-viewport { height: calc(100% - 68px); }
  .feature-story[data-mode="scroll"] .story-panel { grid-template-rows: auto minmax(0, 1fr); gap: 16px; }
  .feature-story[data-mode="scroll"] .story-panel h2 { font-size: var(--type-section); text-align: left; }
  .feature-story[data-mode="scroll"] .feature-widget { padding: 16px; margin-top: 12px; border-radius: 20px; }
  .feature-story[data-mode="scroll"] .feature-widget > p { font-size: var(--type-body); line-height: 1.55; }
  .feature-story[data-mode="scroll"] .feature-tags { gap: 6px; margin-top: 12px; }
  .feature-story[data-mode="scroll"] .feature-tags span { font-size: var(--type-label); padding: 6px 8px; border-radius: 9px; }
  .feature-story[data-mode="scroll"] .context-note { font-size: var(--type-label); margin-top: 10px; }
  .feature-story[data-mode="scroll"] .ai-scene figcaption { font-size: var(--type-subheading); }
  .story-panel .ai-scene img { width: 100%; max-width: 100%; }
}

@media (prefers-reduced-motion: reduce) { .feature-story .story-panel { scroll-snap-align: none; } }
@media (prefers-reduced-motion: reduce) { .feature-story[data-direct] .story-track { transition: none; } }

.story-short { display: none; }


@media (prefers-reduced-motion: reduce) { .regular-insight > p, .feature-story[data-direct] .story-panel, .feature-story[data-direct] .feature-copy, .feature-story[data-direct] .product-art, .feature-story[data-direct] .ai-gallery { transition: none; } }

/* The examples share the native-scroll reading holds used by the feature story. */
.insight-story { --story-top: 112px; padding-block: 56px; overflow-anchor: none; }
.insight-story .story-track { display: grid; gap: 20px; }
.insight-story .story-toolbar { margin-bottom: 20px; }
.insight-story .insight-choices { margin-bottom: 0; width: 100%; min-width: 0; }
.insight-story .insight-choices button { flex: 1 0 auto; }
.insight-story .insight-panel { align-self: start; }
.insight-story[data-mode="scroll"] { padding-block: 0; }
.insight-story[data-mode="scroll"] .story-stage { position: sticky; top: var(--story-top); height: calc(100svh - var(--story-top) - 20px); padding-block: 48px; }
.insight-story[data-mode] .story-track { display: grid; gap: 0; align-items: start; }
.insight-story[data-mode] .insight-panel { grid-area: 1 / 1; opacity: 0; pointer-events: none; transition: opacity 100ms linear; }
.insight-story[data-mode] .insight-panel[aria-hidden="false"] { pointer-events: auto; }
.insight-story[data-direct] .insight-panel { transition: opacity 250ms var(--ease-soft); }
.insight-story[data-instant] .insight-panel { transition: none; }
@media (max-width: 767px) {
  .insight-story { --story-top: 88px; }
  .insight-story[data-mode="scroll"] .story-stage { padding-block: 28px; align-content: center; }
  .insight-story[data-mode="scroll"] .insight-intro h2 { font-size: var(--type-section); }
  .insight-story[data-mode="scroll"] .insight-intro > p { font-size: var(--type-body); margin-block: 16px; }
  .insight-story[data-mode="scroll"] .regular-insight { padding: 18px; }
  .insight-story[data-mode="scroll"] .regular-insight > p { font-size: var(--type-body); }
  .insight-story .insight-choices button { font-size: var(--type-control); padding-inline: 14px; }
}
@media (prefers-reduced-motion: reduce) { .insight-story .insight-panel { transition: none; } }

/* Source-backed facts use the same native reading holds as the product stories. */
.statistics-story { --story-top: 112px; padding-block: 48px; overflow-anchor: none; }
.statistics-story .story-track { display: grid; gap: 64px; }
.statistic-panel { display: grid; align-items: center; padding-block: 48px; min-width: 0; }
.statistic-panel .feature-copy { width: min(760px, 100%); align-self: center; }
.statistic-panel h2 { font-size: var(--type-section); line-height: 1.08; text-align: left; text-wrap: balance; }
.statistic-panel .feature-copy > p { margin-top: 20px; font-size: var(--type-body); line-height: 1.65; }
.statistic-panel .feature-copy > .statistic-source { margin-top: 16px; text-align: right; }
.statistics-story[data-mode="scroll"] { padding-block: 0; }
.statistics-story[data-mode="scroll"] .story-stage { position: sticky; top: var(--story-top); height: calc(100svh - var(--story-top) - 20px); padding-block: 44px; }
.statistics-story[data-mode="scroll"] .story-toolbar { display: none; }
.statistics-story[data-mode="scroll"] .story-viewport, .statistics-story[data-mode="scroll"] .story-track { height: 100%; }
.statistics-story[data-mode] .story-track { display: grid; gap: 0; }
.statistics-story[data-mode] .statistic-panel { grid-area: 1 / 1; padding: 0; opacity: 0; pointer-events: none; transition: opacity 100ms linear; }
.statistics-story[data-mode] .statistic-panel[aria-hidden="false"] { pointer-events: auto; }
.statistics-story[data-mode="scroll"] .statistic-panel { height: 100%; }
.statistics-story[data-direct] .statistic-panel { transition: opacity 250ms var(--ease-soft); }
.statistics-story[data-instant] .statistic-panel { transition: none; }
@media (max-width: 767px) {
  /* All visible items share one spacing calculation, including the logo/CTA. */
  .site-header, .footer-top { display: grid; grid-template-columns: repeat(5, max-content); justify-content: space-between; column-gap: 0; }
  .site-header nav, .footer-top nav { display: contents; }
  .footer-top { grid-template-columns: repeat(5, max-content); }
  .site-header nav a { font-size: var(--type-nav); }
  .footer-top nav a { font-size: var(--type-nav); }
  .statistics-story { --story-top: 88px; padding-block: 32px; }
  .statistics-story[data-mode="scroll"] .story-stage { padding-block: 36px; }
  .statistics-story[data-mode="scroll"] .statistic-panel h2 { font-size: var(--type-section); }
  .statistics-story[data-mode="scroll"] .statistic-panel .feature-copy > p { font-size: var(--type-body); margin-top: 16px; }
}
@media (max-width: 374px) {
  .site-header nav a, .footer-top nav a { font-size: var(--type-nav); }
  .launch-actions .button { padding-inline: 8px; }
}
@media (prefers-reduced-motion: reduce) { .statistic-panel { transition: none !important; } }

/* Compact header pills retain the hero secondary-button treatment. */
.site-header .button { font-size: 14px; padding: 10px 18px; min-height: 44px; }
@media (max-width: 767px) {
  .site-header .button { font-size: var(--type-nav); padding: 8px 10px; min-height: 40px; }
}
@media (max-width: 374px) {
  .site-header .button { font-size: var(--type-nav); padding-inline: 8px; }
}

/* Browser chrome must not rebuild stories or capture a tall article as a layer. */
@media (max-width: 767px), (pointer: coarse) {
  @view-transition { navigation: none; }
  .site-header { view-transition-name: none; }
  html[data-page-enter] main { animation: none; }
}
/* Paint the mobile document canvas, including the area behind Safari's controls.
   A fixed texture stops at Safari's layout viewport and leaves a different native fill.
   Reading naturally travels through the same two broad light/deep-blue cycles. */
@media (max-width: 767px), (pointer: coarse) {
  html { background-color: var(--blue); }
  body {
    background-color: var(--blue);
    background-image:
      radial-gradient(ellipse 75vw 18% at 88% 30%, rgb(154 211 255 / .18), transparent 85%),
      radial-gradient(ellipse 85vw 16% at 45% 78%, rgb(189 239 255 / .16), transparent 85%),
      linear-gradient(180deg, #1377d8 0%, #309ff1 25%, #197edc 50%, #43a5f0 75%, #1377d8 100%);
  }
  .site-atmosphere { display: none; }
  .site-header {
    background-color: transparent;
    background-image: linear-gradient(rgb(236 246 255 / .98), rgb(236 246 255 / .98));
  }
}

/* Native pinning avoids Safari's fixed/sticky color capture. These timelines
   reproduce the existing header/stage positions, including their end boundaries.
   Keep functional pinning with reduced motion; static story reading is unchanged. */
@media (max-width: 767px), (pointer: coarse) {
  html[data-native-pinning] .site-header {
    position: absolute;
    animation: header-follow 1s linear both;
    animation-timeline: scroll(root block);
  }
  html[data-native-pinning] [data-scroll-story][data-mode="scroll"] {
    view-timeline-name: --welta-story;
    view-timeline-axis: block;
    view-timeline-inset: var(--story-top) calc(100% - var(--story-top) - var(--story-stage-height));
  }
  html[data-native-pinning] [data-scroll-story][data-mode="scroll"] .story-stage {
    position: relative;
    animation: story-follow 1s linear both;
    animation-timeline: --welta-story;
    animation-range: contain 0% contain 100%;
  }
}
@keyframes header-follow {
  from { transform: translateY(0); }
  to { transform: translateY(var(--header-scroll-range)); }
}
@keyframes story-follow {
  from { transform: translateY(calc(0px - var(--story-top))); }
  to { transform: translateY(calc(var(--story-travel) - var(--story-top))); }
}

@media (max-width: 767px) {
  .engine-copy > .button, .privacy-details > .button, .insight-intro > .button, .doc-card > .button { display: flex; width: fit-content; max-width: 100%; margin-inline: auto; text-align: center; }
  .launch-actions { flex-wrap: nowrap; }
  .launch-actions .button { flex: 1 1 0; min-width: 0; padding-inline: 8px; justify-content: center; }
}

/* Mobile type roles stay identical in scroll, compact and static reading modes. */
@media (max-width: 767px) {
  h1, h2, h3, h4 { font-optical-sizing: auto; }
  .privacy-heading h2 { font-size: var(--type-section); }
  .privacy-details p, .story-dialog p, .engine-steps p { font-size: var(--type-body); line-height: 1.55; }
  .story-dialog h3 { font-size: var(--type-subheading); }
  h2, .feature-story[data-mode="scroll"] .story-panel h2, .insight-story[data-mode="scroll"] .insight-intro h2, .launch-inner h2 { line-height: 1.12; letter-spacing: -.03em; }
  .hero h1 { line-height: 1.08; letter-spacing: -.03em; }
  .hero-widget .hero-description, .preview-description > p:last-child, .engine-copy p:not(.feature-label), .engine-steps p, .feature-widget > p, .feature-story[data-mode="scroll"] .feature-widget > p, .insight-intro > p, .statistic-panel .feature-copy > p, .faq-answer > p { line-height: 1.55; }
  .engine-steps h4, .story-panel .ai-scene figcaption { font-size: var(--type-subheading); }
  .hero-actions .button { flex: 1 1 0; min-width: 0; }
  .button { line-height: 1.25; }
  .story-nav button, .insight-story .insight-choices button, .preview-controls button, .preview-theme-controls button { font-size: var(--type-control); line-height: 1.25; letter-spacing: 0; }
  .site-header nav, .footer-top nav { font-size: var(--type-nav); }
}