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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg, canvas { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.1;
  margin: 0;
  letter-spacing: -0.01em;
}

h1 { font-size: var(--step-5); }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-2); }

p { margin: 0; color: var(--text-muted); }

.mono {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.container {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent-primary);
  color: white;
  padding: var(--space-xs) var(--space-sm);
  z-index: 1000;
}
.skip-link:focus {
  left: var(--space-sm);
  top: var(--space-sm);
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

section {
  padding: var(--space-2xl) 0;
}

@media (max-width: 720px) {
  section { padding: var(--space-xl) 0; }
}

@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;
    scroll-behavior: auto !important;
  }
}