:root {
  color-scheme: dark;
  --bg: #101312;
  --surface: #181c1a;
  --line: #383e3a;
  --text: #f3f0e8;
  --muted: #b0b6b0;
  --accent: #e9b27a;
  --accent-strong: #f5bd82;
  --max: 1100px;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 100px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-strong); text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { text-decoration: underline; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
img { max-width: 100%; height: auto; display: block; }
.shell { width: min(calc(100% - 64px), var(--max)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: 12px; z-index: 30; padding: 12px 18px; background: var(--accent); color: var(--bg); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: var(--bg); }
.nav { position: relative; min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 12px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-size: 19px; font-weight: 700; letter-spacing: -.02em; text-decoration: none; min-height: 44px; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
.brand em { color: var(--accent); font-style: normal; }
nav { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: 14px; }
nav a { display: inline-flex; align-items: center; min-height: 44px; padding-inline: 4px; color: var(--muted); text-decoration: none; }
nav a[aria-current="page"] { color: var(--text); text-decoration: underline; }
.language-menu { max-width: 100%; font-size: 14px; }
.language-menu summary { min-height: 44px; padding: 10px 4px; cursor: pointer; color: var(--text); }
.language-menu summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.language-menu nav { position: absolute; top: 100%; inset-inline-end: 0; z-index: 21; width: min(300px, calc(100vw - 40px)); max-height: 65svh; overflow-y: auto; display: grid; padding: 12px; background: var(--surface); border: 1px solid var(--line); }
.language-menu nav a { padding-inline: 12px; }
main section { padding-block: 88px; }
.hero { padding-top: 64px; border-bottom: 1px solid var(--line); }
.hero-icon { margin-bottom: 28px; border-radius: 23px; }
.eyebrow { margin: 0 0 18px; color: var(--accent); font-size: 13px; font-weight: 600; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.035em; text-wrap: balance; }
h1 { margin: 0 0 28px; font-size: clamp(48px, 8vw, 96px); font-weight: 600; }
h2 { margin: 0 0 24px; font-size: clamp(32px, 4.5vw, 50px); font-weight: 600; }
h3 { margin: 8px 0 12px; font-size: 23px; font-weight: 600; }
p { margin: 0 0 20px; }
.lead { max-width: 660px; margin: 0; color: var(--muted); font-size: clamp(18px, 2.2vw, 23px); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px; margin-top: 32px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 18px; min-height: 48px; padding: 12px 22px; border-radius: 7px; font-weight: 600; text-decoration: none; }
.button.primary { background: var(--accent); color: #18130e; }
.button:hover { background: var(--accent-strong); text-decoration: none; }
.text-link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; }
.support-note { margin: 20px 0 0; color: var(--muted); font-size: 14px; max-width: 650px; }
.recording-preview { margin: 56px 0 0; }
.recording-preview img { width: 100%; }
figcaption { color: var(--muted); font-size: 15px; }
.recording-preview figcaption { margin-top: 14px; }
.section-heading { margin-bottom: 44px; }
.section-heading p { max-width: 680px; }
.muted { color: var(--muted); }
.screen-story__stage { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.screen-story__item { margin: 0; min-width: 0; }
.screen-story__item img { width: 100%; }
.screen-story__item figcaption { padding-top: 24px; }
.screen-story__item h3 { color: var(--text); }
.screen-story__item p { margin: 0; }
.screen-number { color: var(--accent); font-size: 12px; font-variant-numeric: tabular-nums; }
.features { border-block: 1px solid var(--line); }
.feature-list { margin: 0; }
.feature-list > div { display: grid; grid-template-columns: 1fr 1.6fr; gap: 40px; padding-block: 26px; border-top: 1px solid var(--line); }
.feature-list dt { font-size: 22px; font-weight: 600; }
.feature-list dd { margin: 0; color: var(--muted); max-width: 640px; }
.data-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; }
.closing { border-top: 1px solid var(--line); }
.doc { max-width: 780px; padding-top: 64px; padding-bottom: 84px; overflow-wrap: anywhere; }
.doc h1 { font-size: clamp(36px, 5vw, 54px); margin-bottom: 16px; }
.doc h2 { margin-top: 48px; font-size: 28px; }
.doc h3 { margin-top: 30px; font-size: 20px; }
.meta { color: var(--muted); border-bottom: 1px solid var(--line); padding-bottom: 26px; margin-bottom: 34px; }
.doc ul { padding-left: 22px; }
.doc li { margin: 8px 0; }
.notice { margin: 24px 0; padding: 16px 18px; border-left: 3px solid var(--accent); background: var(--surface); color: var(--muted); }
footer { border-top: 1px solid var(--line); padding-block: 24px; color: var(--muted); font-size: 14px; }
.footer-row { display: flex; align-items: center; justify-content: space-between; gap: 12px 24px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 8px 24px; flex-wrap: wrap; }
.footer-links a { display: inline-flex; align-items: center; min-height: 44px; }
@media (max-width: 720px) {
  .shell { width: calc(100% - 40px); }
  main section { padding-block: 60px; }
  .nav { gap: 4px 16px; }
  nav { gap: 4px 8px; }
  .hero-icon { width: 76px; height: 76px; }
  .screen-story__stage { grid-template-columns: 1fr; gap: 48px; }
  .screen-story__item { max-width: 360px; margin-inline: auto; }
  .feature-list > div { grid-template-columns: 1fr; gap: 8px; }
  .data-layout { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 600px) {
  .screen-story.is-pinned { height: var(--story-height); }
  .is-pinned .screen-story__stage { display: grid; grid-template-columns: 1fr; position: sticky; top: var(--header-height); height: var(--stage-height); padding-block: 20px; }
  .is-pinned .screen-story__item { grid-area: 1 / 1; display: grid; grid-template-rows: minmax(0, 1fr) auto; justify-items: center; width: 100%; max-width: none; height: 100%; opacity: 0; visibility: hidden; transition: opacity 140ms ease-out; }
  .is-pinned .screen-story__item.is-active { opacity: 1; visibility: visible; }
  .is-pinned .screen-story__item img { width: auto; height: 100%; object-fit: contain; min-height: 0; }
  .is-pinned .screen-story__item figcaption { width: 100%; text-align: center; padding-top: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .is-pinned .screen-story__item { transition: none; }
}