/* Сброс, типографика, служебные классы */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--space-4));
  -webkit-text-size-adjust: 100%;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--color-primary);
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { max-width: 100%; }
img { height: auto; display: block; }

a {
  color: var(--color-accent);
  text-decoration-color: color-mix(in srgb, var(--color-accent) 35%, transparent);
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}
a:hover { color: var(--color-accent-600); }

button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }

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

/* Раскладка */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
.container--narrow { max-width: 820px; }

.section { padding-block: var(--space-9); }
.section--muted { background: var(--color-muted); }
.section--cta { background: var(--color-primary); color: #E2E8F0; }
.section--cta .section__title { color: #FFFFFF; }

.section__head {
  max-width: 720px;
  margin-bottom: var(--space-7);
}
.section__title { font-size: var(--text-3xl); }
.section__lead {
  margin-top: var(--space-3);
  font-size: var(--text-lg);
  color: var(--color-muted-fg);
}

.eyebrow {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.eyebrow--light { color: #7DD3FC; }

.grid { display: grid; gap: var(--space-5); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1023px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 599px) {
  .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .section { padding-block: var(--space-7); }
}

/* Доступность */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 100;
  background: var(--color-primary);
  color: #FFF;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: var(--space-4); color: #FFF; }

.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;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}