*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text);
  background: var(--surface);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: var(--line-height-tight);
  font-weight: var(--font-weight-bold);
  color: var(--purple-900);
}

h1 { font-size: var(--font-size-5xl); font-weight: var(--font-weight-extrabold); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

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

strong {
  color: var(--text);
  font-weight: var(--font-weight-semibold);
}

.container {
  width: min(100% - var(--space-8), var(--container-max));
  margin-inline: auto;
}

.container--narrow {
  width: min(100% - var(--space-8), var(--container-narrow));
  margin-inline: auto;
}

.section {
  padding-block: var(--space-16);
}

.section--alt {
  background: var(--purple-50);
}

.section__label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--purple-600);
  margin-bottom: var(--space-3);
}

.section__title {
  margin-bottom: var(--space-4);
}

.section__lead {
  font-size: var(--font-size-lg);
  max-width: 640px;
  margin-bottom: var(--space-10);
}

.text-center { text-align: center; }
.text-center .section__lead { margin-inline: auto; }

.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;
  top: -100%;
  left: var(--space-4);
  z-index: 9999;
  padding: var(--space-3) var(--space-4);
  background: var(--purple-900);
  color: var(--text-inverse);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: var(--space-4);
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}