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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin: 0 0 var(--space-4);
}

h1 { font-size: clamp(2rem, 5vw + 1rem, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw + 0.8rem, 2.4rem); }
h3 { font-size: clamp(1.2rem, 1.4vw + 0.8rem, 1.5rem); }

p { margin: 0 0 var(--space-4); }

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--duration-fast) var(--ease-out);
}
a:hover, a:focus-visible { color: var(--color-primary-dark); }

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

:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--space-5); }
.container--narrow { max-width: var(--container-narrow); }

.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: absolute; left: var(--space-3); top: -40px;
  background: var(--color-primary); color: #fff; padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm); z-index: 100;
  transition: top var(--duration-fast) var(--ease-out);
}
.skip-link:focus { top: var(--space-3); }