.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 990;
  height: var(--header-height);
  background: var(--color-ink);
  color: var(--color-text-on-dark);
}

.site-header a {
  color: inherit;
}

.header__bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  height: 100%;
}

@media (min-width: 1024px) {
  .site-header {
    background: transparent;
  }

  .header__bar {
    width: calc(100% - 2 * var(--container-pad-inline) + 2.5rem);
    max-width: calc(var(--container-max) - 2 * var(--container-pad-inline) + 2.5rem);
    /* Как в оригинале: плашка 68px от самого верха страницы. */
    height: 68px;
    padding-inline: 1.25rem;
    border-radius: 30px;
    background: rgba(21, 21, 21, 0);
    -webkit-backdrop-filter: blur(5px);
    backdrop-filter: blur(5px);
    transition: background-color var(--duration-menu) var(--easing-standard);
  }

  .site-header.is-scrolled .header__bar {
    background: rgba(21, 21, 21, 0.8);
  }
}

.header__logo {
  display: inline-flex;
  flex-shrink: 0;
}

.header__logo img {
  width: 100px;
  height: auto;
}

.header__burger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-inline-start: auto;
  border-radius: var(--radius);
}

.header__burger-icon,
.header__burger-icon::before,
.header__burger-icon::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-on-dark);
  border-radius: 1px;
  transition: transform var(--duration-menu) var(--easing-standard), opacity var(--duration-menu) var(--easing-standard);
}

.header__burger-icon {
  position: relative;
}

.header__burger-icon::before,
.header__burger-icon::after {
  content: '';
  position: absolute;
  left: 0;
}

.header__burger-icon::before {
  top: -7px;
}

.header__burger-icon::after {
  top: 7px;
}

.header__burger[aria-expanded='true'] .header__burger-icon {
  background: transparent;
}

.header__burger[aria-expanded='true'] .header__burger-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.header__burger[aria-expanded='true'] .header__burger-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

@media (min-width: 1024px) {
  .header__burger {
    display: none;
  }
}

.btn.header__cta {
  display: none;
}

.site-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  width: min(320px, 85vw);
  padding: var(--space-6);
  background: var(--color-ink);
  color: var(--color-text-on-dark);
  transform: translateX(100%);
  transition: transform var(--duration-menu) var(--easing-standard);
  overflow-y: auto;
}

.site-header.is-nav-open .site-nav {
  transform: translateX(0);
}

.site-nav__close {
  align-self: flex-end;
  width: 40px;
  height: 40px;
  font-size: 1.25rem;
  border-radius: var(--radius);
}

@media (min-width: 1024px) {
  .site-nav__close {
    display: none;
  }
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  font-size: 1.125rem;
}

.site-nav__list a {
  color: inherit;
}

.site-nav__list a[aria-current='true'] {
  color: var(--color-accent);
}

.site-nav__list a[aria-current='true']:hover {
  text-decoration: none;
}

.site-nav__cta {
  margin-top: auto;
}

.header__overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0.5);
}

.header__overlay[hidden] {
  display: none;
}

@media (min-width: 1024px) {
  .site-nav {
    position: static;
    flex: 1 1 auto;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    width: auto;
    padding: 0;
    background: none;
    color: inherit;
    transform: none;
    overflow: visible;
  }

  .site-nav__list {
    flex-direction: row;
    gap: 30px; 
    font-size: var(--fs-small);
  }

  .site-nav__list a {
    text-underline-offset: 6px;
    text-decoration-thickness: 1px;
  }

  .btn.site-nav__cta {
    display: none;
  }

  .btn.header__cta {
    display: inline-flex;
  }

  .header__overlay {
    display: none !important;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  border-radius: 999px;
  font-weight: 600;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
}

.btn--accent {
  border: 2px solid var(--color-accent);
  background: var(--color-accent);
  color: var(--color-text-on-dark);
  transition: background-color 0.2s ease-in-out, color 0.2s ease-in-out;
}

.btn--accent:hover,
.btn--accent:focus-visible {
  background: var(--color-paper);
  color: #000;
}

.btn.btn--light {
  background: var(--color-paper);
  color: #000;
  font-weight: 500;
  font-size: var(--fs-small);
  padding: var(--space-3) var(--space-8);
  transition: background-color 0.2s ease-in-out, color 0.2s ease-in-out;
}

.btn.btn--light:hover,
.btn.btn--light:focus-visible {
  background: var(--color-accent);
  color: var(--color-text-on-dark);
}

.btn.header__cta {
  width: 167px;
  height: 40px;
  padding: 0;
}