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

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

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

a {
  color: var(--color-secondary);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color var(--transition);
}

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

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

.skip-link {
  position: absolute;
  inset-inline-start: var(--space-sm);
  top: -100%;
  z-index: 10000;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-accent);
  color: var(--color-bg);
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
}

.visually-hidden {
  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:focus {
  top: var(--space-sm);
}

.container {
  width: min(100% - var(--space-md) * 2, var(--container-max));
  margin-inline: auto;
}

.container--narrow {
  width: min(100% - var(--space-md) * 2, var(--container-narrow));
}

.section {
  position: relative;
  isolation: isolate;
  padding-block: var(--space-xl);
}

.section > .container,
.section > .container--narrow {
  position: relative;
  z-index: 1;
}

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

/* Full-width section fills (reference-style banding, unique palette) */
.section--fill-surface {
  background: var(--gradient-section-surface);
}

.section--fill-soft {
  background: var(--gradient-section-soft);
}

.section--fill-teal {
  background: var(--gradient-section-teal);
}

.section--fill-warm {
  background: var(--gradient-section-warm);
}

.section--fill-mesh {
  background: var(--gradient-section-mesh);
}

.section--fill-accent {
  background: var(--gradient-section-accent);
}

.section--fill-permissions {
  background: var(--gradient-section-permissions);
}

.section--fill-closing {
  background: var(--gradient-section-closing);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 1.4rem + 1.5vw, 2.75rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-md);
}

.section-lead {
  font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.2rem);
  color: var(--color-text-muted);
  max-width: 38rem;
  margin: 0 0 var(--space-lg);
}

.prose {
  color: var(--color-text-muted);
}

.prose h2 {
  font-family: var(--font-display);
  color: var(--color-text);
  font-size: 1.35rem;
  margin-block: var(--space-lg) var(--space-sm);
}

.prose h3 {
  color: var(--color-text);
  font-size: 1.1rem;
  margin-block: var(--space-md) var(--space-xs);
}

.prose p,
.prose li {
  margin-block: 0.75em;
}

.prose ul,
.prose ol {
  padding-inline-start: 1.25em;
}

.prose--legal > p:first-of-type {
  font-size: 1.0625rem;
  color: var(--color-text);
}

.prose-table-wrap {
  overflow-x: auto;
  margin-block: var(--space-md);
}

.prose-table {
  width: 100%;
  min-width: 28rem;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.prose-table th,
.prose-table td {
  border: 1px solid var(--color-border);
  padding: 0.65rem 0.85rem;
  text-align: start;
  vertical-align: top;
}

.prose-table th {
  background: var(--color-surface-elevated);
  color: var(--color-text);
  font-weight: 600;
}

.prose-table caption {
  caption-side: top;
  text-align: start;
  font-weight: 600;
  color: var(--color-text);
  padding-block-end: var(--space-sm);
}

.page-hero {
  padding-block: calc(var(--header-height) + var(--space-lg)) var(--space-lg);
  background: var(--gradient-hero);
}

.page-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.5rem + 2vw, 3rem);
  margin: 0 0 var(--space-sm);
}

.page-hero__lead {
  color: var(--color-text-muted);
  max-width: 36rem;
  margin: 0;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

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