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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  scroll-behavior: smooth;
}

body {
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-optical-sizing: auto;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1, "cv11" 1;
}

img, svg, video, canvas { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; letter-spacing: inherit; }
button { background: none; border: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--text);
  text-wrap: balance;
  font-optical-sizing: auto;
}
p { text-wrap: pretty; }

.mono {
  font-family: var(--font-mono);
  font-feature-settings: "kern" 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

::selection { background: var(--text); color: var(--bg); }

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}
:focus:not(:focus-visible) { outline: none; }

* {
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-full);
  border: 3px solid transparent;
  background-clip: content-box;
}
*::-webkit-scrollbar-thumb:hover { background-clip: content-box; background-color: var(--text-subtle); }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--narrow { max-width: var(--container-narrow); }
.container--wide   { max-width: var(--container-wide); }

@media (max-width: 640px) {
  .container { padding-inline: var(--space-5); }
}

.section { padding-block: clamp(var(--space-16), 9vw, var(--space-32)); }
.section--tight { padding-block: clamp(var(--space-12), 6vw, var(--space-20)); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--text-muted);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--border-strong);
}
.eyebrow--plain::before { display: none; }

.display {
  font-size: clamp(2.75rem, 6.6vw, 4.5rem);
  line-height: 1.0;
  letter-spacing: -0.042em;
  font-weight: var(--weight-bold);
}
.headline {
  font-size: clamp(var(--text-2xl), 3.6vw, var(--text-4xl));
  line-height: 1.08;
  letter-spacing: -0.032em;
  font-weight: var(--weight-bold);
}
.lead {
  font-size: clamp(var(--text-md), 1.5vw, var(--text-lg));
  line-height: 1.62;
  color: var(--text-secondary);
  text-wrap: pretty;
}

.text-muted   { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-center  { text-align: center; }

.grain {
  position: fixed;
  inset: 0;
  z-index: var(--z-base);
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

.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;
}
.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: var(--z-toast);
  padding: var(--space-2) var(--space-4);
  background: var(--primary);
  color: var(--primary-text);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  transform: translateY(-150%);
  transition: transform var(--dur) var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}