:root {
  color-scheme: light;
  --sd-blue-deep: #0b2f5b;
  --sd-blue: #0b63ce;
  --sd-blue-bright: #0a6ede;
  --sd-blue-soft: #e7f1fc;
  --sd-white: #ffffff;
  --sd-page: #f6f9fc;
  --sd-surface: #ffffff;
  --sd-ink: #102a43;
  --sd-muted: #52677c;
  --sd-border: #cfdeec;
  --sd-whatsapp: #0d7a3f;
  --sd-positive: #0d7a3f;
  --sd-rubber: #15202b;
  --sd-rubber-muted: #b9c7d3;
  --sd-focus: #0b63ce;
  --sd-radius-sm: 10px;
  --sd-radius-md: 16px;
  --sd-shadow-sm: 0 8px 24px rgba(11, 47, 91, 0.08);
  --sd-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Roboto, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  background: var(--sd-page);
  color: var(--sd-ink);
  font-family: var(--sd-font);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; }
a { color: var(--sd-blue-deep); }

.site-shell {
  width: min(100%, 76rem);
  margin-inline: auto;
  padding-inline: 16px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  inset: 8px auto auto 8px;
  padding: 10px 14px;
  border-radius: var(--sd-radius-sm);
  background: var(--sd-white);
  color: var(--sd-blue-deep);
  font-weight: 800;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--sd-border);
  background: rgba(255, 255, 255, 0.97);
}
.site-header__row {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.site-brand {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--sd-blue-deep);
  text-decoration: none;
}
.site-brand__mark { width: 32px; height: 32px; flex: 0 0 auto; }
.site-brand__name { display: block; font-size: 16px; font-weight: 850; letter-spacing: -0.02em; }
.site-brand__tagline { display: none; color: var(--sd-muted); font-size: 12px; }
.site-header__actions { display: flex; align-items: center; gap: 6px; }
.language-switch {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  border: 1px solid var(--sd-border);
  border-radius: 999px;
  background: var(--sd-page);
}
.language-switch a {
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--sd-muted);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}
.language-switch a[aria-current="page"] {
  background: var(--sd-blue-deep);
  color: var(--sd-white);
}
.site-header__whatsapp {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  border-radius: var(--sd-radius-sm);
  background: var(--sd-whatsapp);
  color: var(--sd-white);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}
.site-header__whatsapp-long { display: none; }

.site-main { flex: 1; width: 100%; }

.site-footer {
  margin-top: auto;
  padding-block: 36px 24px;
  background: var(--sd-rubber);
  color: var(--sd-white);
}
.site-footer__grid { display: grid; gap: 28px; }
.site-footer__heading { margin: 0 0 10px; font-size: 15px; color: var(--sd-white); }
.site-footer__text { max-width: 52ch; margin: 0; color: var(--sd-rubber-muted); }
.site-footer__links { display: grid; gap: 4px; }
/* Область нажатия, а не только подчёркнутый текст: измерение на 360 px давало
   17 px у языковых ссылок и 25 px у контактных — мимо пальца и ниже минимума
   WCAG 2.5.8. inline-flex с min-height растит цель, не раздвигая макет. */
.site-footer a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--sd-white);
  text-underline-offset: 3px;
}
.site-footer__meta a { min-height: 32px; padding-inline: 4px; }
.site-footer__meta {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  color: var(--sd-rubber-muted);
  font-size: 14px;
}

.button-primary, .button-whatsapp {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 0;
  border-radius: var(--sd-radius-sm);
  color: var(--sd-white);
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}
.button-primary { background: var(--sd-blue); }
.button-whatsapp { background: var(--sd-whatsapp); }
.status-positive { color: var(--sd-positive); }

:where(a, button, input, select, textarea):focus-visible {
  outline: 3px solid var(--sd-focus);
  outline-offset: 3px;
}
:where(a, button) { transition: transform 140ms ease, filter 140ms ease; }
:where(a, button):active { transform: translateY(1px); }

@media (min-width: 48rem) {
  .site-shell { padding-inline: 24px; }
  .site-header__row { gap: 16px; }
  .site-brand { gap: 9px; }
  .site-brand__mark { width: 36px; height: 36px; }
  .site-brand__name { font-size: 17px; }
  .site-brand__tagline { display: block; }
  .site-header__actions { gap: 10px; }
  .site-header__whatsapp { padding-inline: 16px; font-size: 14px; }
  .site-header__whatsapp-long { display: inline; }
  .site-header__whatsapp-short { display: none; }
  .site-footer { padding-block: 48px 28px; }
  .site-footer__grid { grid-template-columns: minmax(0, 1.5fr) minmax(13rem, 0.75fr); gap: 48px; }
}

@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;
  }
}