:root {
  color-scheme: light;
  --z-decorative: 0;
  --z-content: 1;
  --z-raised: 2;
  --z-local-overlay: 3;
  --z-sticky: 20;
  --z-header: 40;
  --z-overlay: 60;
  --z-modal: 80;
  --header-height: 4.5rem;
  --header-min-height: 4.5rem;
  --qi-gutter: clamp(1rem, 3vw, 1.75rem);
  --qi-section-pad-y: clamp(3rem, 8vw, 6rem);
  --qi-max-width: 72rem;
  --qi-bp-sm: 40rem;
  --qi-bp-md: 64rem;
  --qi-bp-lg: 80rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 0;
  font-family: var(--font-body, system-ui, sans-serif);
  color: var(--chrome-ink, #1a1a1a);
  background: var(--chrome-surface, #ffffff);
  line-height: 1.6;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

.qi-container {
  width: 100%;
  max-width: var(--qi-max-width);
  margin-inline: auto;
  padding-inline: var(--qi-gutter);
}

.qi-section {
  padding-block: var(--qi-section-pad-y);
}

/* svh/dvh only via this platform primitive — do not require every hero to be fullscreen */
.qi-viewport-height {
  min-height: 100svh;
  min-height: 100dvh;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: var(--z-modal);
  padding: 0.5rem 1rem;
  background: var(--chrome-ink, #1a1a1a);
  color: var(--chrome-surface, #ffffff);
  text-decoration: none;
}

.skip-link:focus,
.skip-link:focus-visible {
  left: var(--qi-gutter);
  top: 0.5rem;
}

:focus-visible {
  outline: 2px solid var(--chrome-accent, currentColor);
  outline-offset: 2px;
}

.page-shell,
main#main {
  position: relative;
  z-index: var(--z-content);
  display: block;
  padding-top: var(--header-height);
  min-width: 0;
}

.qi-not-found {
  padding-block: var(--qi-section-pad-y);
}

.qi-not-found__eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--chrome-muted, #666);
}

.qi-not-found__title {
  font-family: var(--font-heading, var(--font-body, system-ui, sans-serif));
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  margin: 0.5rem 0 1rem;
}

.qi-not-found__home {
  color: var(--chrome-accent, inherit);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (min-width: 40rem) {
  :root {
    --header-height: 4.75rem;
    --header-min-height: 4.75rem;
  }
}

@media (min-width: 64rem) {
  :root {
    --header-height: 5rem;
    --header-min-height: 5rem;
  }
}