/* Version B · Base: reset, ground, type, Swiss grid helpers */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
/* Fine grain over the page */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 200;
  pointer-events: none;
  background-image: var(--noise);
  opacity: var(--noise-opacity);
  mix-blend-mode: overlay;
}

[hidden] {
  display: none !important;
}
img,
svg {
  max-width: 100%;
  display: block;
}
svg {
  flex-shrink: 0;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-display);
  line-height: var(--leading-snug);
  text-wrap: balance;
}
h1 {
  font-size: var(--text-4xl);
  line-height: var(--leading-tight);
}
h2 {
  font-size: var(--text-3xl);
  line-height: 1;
}
h3 {
  font-size: var(--text-xl);
  letter-spacing: -0.02em;
}
h4 {
  font-size: var(--text-lg);
  letter-spacing: -0.01em;
}
p {
  margin: 0;
  text-wrap: pretty;
}
a {
  color: inherit;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}
a:hover {
  color: var(--color-primary-hover);
}
code,
kbd,
pre {
  font-family: var(--font-mono);
  font-size: 0.92em;
}
b,
strong {
  font-weight: var(--weight-bold);
}
::selection {
  background: var(--color-pulsar);
  color: var(--color-on-accent);
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

/* ---- Layout ---- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section {
  position: relative;
  padding-block: clamp(4rem, 3rem + 5vw, 8rem);
}
.band {
  background: var(--color-bg-raised);
  border-block: var(--hair) solid var(--color-line);
}

/* Swiss 12-column grid. Children set --span (default 12). */
.cols {
  display: grid;
  grid-template-columns: repeat(var(--columns), minmax(0, 1fr));
  column-gap: var(--bento-gap);
  row-gap: var(--space-6);
}
.cols > * {
  grid-column: span var(--span, 12);
  min-width: 0;
}
@media (max-width: 47.99rem) {
  .cols > * {
    grid-column: 1 / -1;
  }
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--stack-gap, var(--space-4));
}
.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--cluster-gap, var(--space-3));
}

/* ---- Type helpers ---- */
.display {
  font-size: var(--text-5xl);
  line-height: 0.9;
  letter-spacing: -0.045em;
}
.lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
}
.small {
  font-size: var(--text-sm);
}
.muted {
  color: var(--color-text-muted);
}

/* Mono label: "[01] Color" */
.label {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font: var(--weight-medium) var(--text-xs)/1.3 var(--font-mono);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.label__idx {
  color: var(--color-ion);
}
.label--dot::before {
  content: "";
  width: 0.5em;
  height: 0.5em;
  background: var(--label-dot, var(--color-ion));
  box-shadow: 0 0 8px var(--label-dot, var(--color-ion));
}

/* Gradient text for one or two words only */
.grad-text {
  background: var(--grad, var(--grad-horizon));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Swiss rule above a block */
.rule {
  border-top: var(--rule-w) solid var(--color-text);
  padding-top: var(--space-4);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -4rem;
  z-index: 300;
}
.skip-link:focus {
  top: var(--space-4);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}