/* ==========================================================================
   BASE RESET AND FOUNDATION
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font);
  font-size: var(--step-body);
  line-height: 1.45;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, video { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, p, figure { margin: 0; }
button { font: inherit; color: inherit; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.skip-link {
  position: absolute; left: 8px; top: 8px; z-index: 100;
  padding: 0.75rem 1rem; background: var(--accent); color: var(--accent-ink);
  transform: translateY(-200%); transition: transform var(--dur-tick) var(--ease);
}
.skip-link:focus { transform: translateY(0); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* arrival gates only when JS runs */
html.js [data-arrive] {
  opacity: 0; transform: translateY(16px);
  transition: opacity var(--dur-panel) var(--ease), transform var(--dur-panel) var(--ease);
}
html.js [data-arrive].arrived { opacity: 1; transform: none; }

/* reduced motion */
@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;
  }
  html.js [data-arrive] { opacity: 1; transform: none; }
}

.container {
  width: 100%;
  padding: 0 var(--margin);
}

/* column grid helpers */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 0 var(--margin);
  padding: 0 var(--margin);
}