.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid hsl(210 15% 88% / 0.7);
  background: linear-gradient(180deg, hsl(0 0% 100% / 0.9), hsl(0 0% 100% / 0.82));
}

.site-header.is-scrolled {
  box-shadow: 0 10px 32px hsl(210 20% 10% / 0.1);
  border-bottom-color: hsl(210 15% 84% / 0.85);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-block: 14px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 210px;
}

.brand__text {
  display: grid;
  line-height: 1.1;
}

.brand__name {
  font-weight: 800;
  font-size: 14px;
  letter-spacing: .01em;
}

.brand__tagline {
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}

.nav-toggle {
  position: relative;
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid hsl(210 15% 86% / 0.9);
  border-radius: 14px;
  background: hsl(0 0% 100% / 0.9);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  appearance: none;
}

.nav-toggle__lines,
.nav-toggle__lines::before,
.nav-toggle__lines::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: hsl(210 15% 18% / 0.85);
  transform: translate(-50%, -50%);
  transition: transform .45s var(--ease-out), opacity .35s var(--ease-out);
}

.nav-toggle__lines::before {
  transform: translate(-50%, calc(-50% - 7px));
}

.nav-toggle__lines::after {
  transform: translate(-50%, calc(-50% + 7px));
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav__link {
  display: inline-flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: 999px;
  color: hsl(210 15% 20% / 0.88);
  font-weight: 700;
  font-size: 13px;
  white-space: nowrap;
  transition: background .35s var(--ease-out), transform .35s var(--ease-out), color .35s var(--ease-out);
}

.nav__link:hover {
  background: hsl(0 0% 100% / 0.65);
  transform: translateY(-1px);
}

.nav__link.is-active,
.nav__link[aria-current="page"] {
  border: 1px solid hsl(210 15% 86% / 0.85);
  background: linear-gradient(180deg, hsl(0 0% 100% / 0.78), hsl(0 0% 100% / 0.55));
  box-shadow: 0 10px 26px hsl(210 20% 10% / 0.08);
  color: hsl(150 15% 22%);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
}

.lang-switch {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid hsl(210 15% 86% / 0.85);
  border-radius: 999px;
  background: hsl(0 0% 100% / 0.72);
}

.lang-btn {
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: hsl(210 10% 32%);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: .06em;
  padding: 8px 10px;
  cursor: pointer;
  appearance: none;
  transition: background .35s var(--ease-out), transform .35s var(--ease-out), color .35s var(--ease-out);
}

.lang-btn:hover {
  transform: translateY(-1px);
}

.lang-btn[aria-pressed="true"] {
  background: linear-gradient(180deg, hsl(0 0% 100% / 0.9), hsl(0 0% 100% / 0.62));
  box-shadow: 0 10px 24px hsl(220 25% 12% / 0.08);
  color: hsl(164 55% 26%);
}

body.nav-open {
  overflow: hidden;
}

@media (max-width: 1140px) {
  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .site-header {
    z-index: 80;
  }

  .site-nav {
    position: fixed;
    top: 74px;
    right: var(--gutter);
    left: var(--gutter);
    z-index: 85;
    display: grid;
    gap: 14px;
    padding: 16px;
    border: 1px solid hsl(210 15% 84% / 0.85);
    border-radius: var(--r-lg);
    background: linear-gradient(180deg, hsl(32 40% 98% / 0.98), hsl(32 35% 96% / 0.96));
    box-shadow: var(--shadow-md);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity .35s var(--ease-out), transform .45s var(--ease-out);
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav__list {
    display: grid;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .nav__list > li {
    width: 100%;
  }

  .nav__link {
    justify-content: space-between;
    width: 100%;
    padding: 12px 14px;
    border: 1px solid hsl(210 15% 88% / 0.6);
    border-radius: 14px;
    background: hsl(0 0% 100% / 0.56);
  }

  .nav__actions {
    display: grid;
    grid-template-columns: 1fr;
    align-items: stretch;
    justify-content: stretch;
    gap: 10px;
    padding-top: 10px;
    border-top: 1px solid hsl(210 15% 86% / 0.75);
  }

  .nav__actions > * {
    width: 100%;
  }

  .lang-switch {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }

  .lang-btn {
    width: 100%;
    text-align: center;
  }

  body.nav-open .nav-toggle__lines {
    background: transparent;
  }

  body.nav-open .nav-toggle__lines::before {
    transform: translate(-50%, -50%) rotate(45deg);
  }

  body.nav-open .nav-toggle__lines::after {
    transform: translate(-50%, -50%) rotate(-45deg);
  }

  body.nav-open::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 55;
    background: hsl(220 25% 10% / 0.16);
  }
}

.site-footer {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid hsl(210 15% 86% / 0.7);
  background: linear-gradient(180deg, hsl(0 0% 100% / 0.26), transparent 60%);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  gap: 18px;
  padding-bottom: 18px;
}

.footer__name {
  margin-bottom: 8px;
  font-weight: 800;
  letter-spacing: .01em;
}

.footer__meta {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  white-space: pre-line;
}

.footer__label {
  margin-bottom: 10px;
  color: hsl(210 10% 30%);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.footer__list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: hsl(210 10% 28%);
}

.footer__list a {
  color: hsl(150 15% 22%);
  font-weight: 800;
}

.footer__list a:hover,
.footer__legal a:hover {
  text-decoration: underline;
}

.footer__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-block: 14px;
  border-top: 1px solid hsl(210 15% 86% / 0.7);
}

.footer__copy {
  color: var(--muted);
  font-size: 12px;
}

.footer__legal {
  display: inline-flex;
  gap: 14px;
}

.footer__legal a {
  color: hsl(210 10% 30%);
  font-weight: 800;
  font-size: 12px;
}

@media (max-width: 980px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .footer__bar {
    align-items: flex-start;
  }

  .footer__legal {
    flex-wrap: wrap;
  }
}

@media (max-width: 560px) {
  .brand {
    min-width: 0;
  }

  .brand__tagline {
    display: none;
  }

  .brand__name {
    font-size: 13px;
  }

  .site-nav {
    top: 68px;
    right: 12px;
    left: 12px;
  }
}