.top-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(165deg, rgba(17, 16, 75, .88), rgba(9, 9, 34, .94));
  border-bottom: 1px solid rgba(255, 255, 255, .14);
  box-shadow: 0 24px 60px -24px rgba(8, 8, 32, .6);
  backdrop-filter: blur(22px) saturate(1.3);
  -webkit-backdrop-filter: blur(22px) saturate(1.3);
}

.top-header .nav {
  width: min(1600px, calc(100% - 64px));
  height: 108px;
  gap: clamp(24px, 2.5vw, 52px);
  border: 0;
}

.header-brand {
  flex-shrink: 0;
  gap: 16px;
  transition: opacity .25s ease;
}

.header-brand:hover {
  opacity: .92;
}

.header-brand img {
  width: 46px !important;
  height: 88px !important;
  object-fit: contain;
  filter: drop-shadow(0 8px 20px rgba(0, 0, 0, .35));
  transition: transform .35s cubic-bezier(.2, .8, .2, 1);
}

.header-brand:hover img {
  transform: scale(1.045);
}

.header-brand > span {
  font: 700 15px var(--display);
  letter-spacing: -.04em;
  color: #fff;
}

.header-brand small {
  display: block;
  color: var(--cyan);
  font: 700 9px var(--display);
  letter-spacing: .16em;
  margin-top: 4px;
}

.top-header .nav-links {
  flex: 1 1 auto;
  justify-content: center;
  gap: clamp(18px, 1.7vw, 36px);
}

.top-header .nav-links a {
  position: relative;
  white-space: nowrap;
  font-size: 12px;
  letter-spacing: .05em;
  color: rgba(255, 255, 255, .72);
  transition: color .3s ease, letter-spacing .3s ease;
}

.top-header .nav-links a:after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -14px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(255, 181, 16, 0));
  box-shadow: 0 0 12px rgba(255, 181, 16, .55);
  transition: right .4s cubic-bezier(.2, .8, .2, 1);
}

.top-header .nav-links a:hover {
  color: #fff;
  letter-spacing: .08em;
}

.top-header .nav-links a:hover:after {
  right: 0;
}

.top-header .nav-actions {
  flex-shrink: 0;
  margin-left: auto;
  gap: 22px;
}

.lang-switch {
  flex-shrink: 0;
  display: flex;
  gap: 2px;
  padding: 4px;
  border-radius: 99px;
  border: 1px solid rgba(255, 255, 255, .22);
  background: rgba(255, 255, 255, .06);
  backdrop-filter: blur(8px);
}

.lang-switch button {
  flex-shrink: 0;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, .72);
  font: 700 11px var(--display);
  letter-spacing: .04em;
  padding: 7px 12px;
  border-radius: 99px;
  cursor: pointer;
  white-space: nowrap;
  transition: color .25s ease, background .25s ease;
}

.lang-switch button:hover {
  color: #fff;
}

.lang-switch button.active {
  background: linear-gradient(135deg, #ffc23a, var(--cyan));
  color: var(--ink);
}

.login-button {
  flex-shrink: 0;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 30px;
  border: 0;
  border-radius: 99px;
  background: linear-gradient(135deg, #ffc23a, var(--cyan));
  color: var(--ink);
  font: 700 13px var(--display);
  letter-spacing: .04em;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 10px 26px -8px rgba(255, 181, 16, .5);
  transition: transform .3s cubic-bezier(.2, .8, .2, 1), box-shadow .3s ease, filter .3s ease;
}

.login-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 38px -10px rgba(255, 181, 16, .6);
  filter: brightness(1.05);
}

.login-button:active {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -8px rgba(255, 181, 16, .5);
}

.top-header .menu-button {
  position: relative;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  padding: 0;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 0;
  line-height: 1;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.top-header .menu-button::before,
.top-header .menu-button::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: box-shadow 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
}

.top-header .menu-button::before {
  box-shadow: 0 -6px currentColor, 0 6px currentColor;
}

.top-header .menu-button::after {
  opacity: 0;
}

.top-header .menu-button[aria-expanded="true"]::before {
  box-shadow: none;
  transform: translate(-50%, -50%) rotate(45deg);
}

.top-header .menu-button[aria-expanded="true"]::after {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(-45deg);
}

.top-header .menu-button:hover,
.top-header .menu-button[aria-expanded="true"] {
  border-color: var(--cyan);
  background: var(--cyan);
  color: var(--ink);
}

.top-header .menu-button:active {
  transform: scale(0.96);
}

@media (max-width: 1500px) {
  .top-header .nav {
    height: 84px;
    gap: 16px;
  }

  .top-header .header-brand {
    margin-right: auto;
  }

  .top-header .nav-links {
    display: none;
  }

  .top-header .nav-actions {
    display: flex;
    gap: 10px;
    order: 1;
  }

  .top-header .menu-button {
    display: grid;
    order: 2;
  }

  .top-header .nav-links.open {
    display: flex;
    position: absolute;
    top: 84px;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 25px;
    z-index: 10;
    background: #fbfaf6;
    border-bottom: 1px solid rgba(23, 20, 80, .12);
    box-shadow: 0 24px 48px -18px rgba(23, 20, 80, .22);
  }

  .top-header .nav-links.open a {
    color: var(--ink);
  }

  .top-header .nav-links.open a:focus-visible {
    outline-color: var(--ink);
  }

  .top-header .nav-links.open a:after {
    background: linear-gradient(90deg, var(--blue), rgba(45, 42, 128, 0));
    box-shadow: none;
  }

  .top-header .login-button {
    display: none;
  }

  .documents-header .login-button {
    display: inline-flex;
    height: 46px;
    padding-inline: 22px;
    font-size: 11px;
  }

  .lang-switch button {
    padding: 6px 9px;
    font-size: 10px;
  }

  .header-brand img {
    width: 31px !important;
    height: 60px !important;
  }

  .header-brand > span {
    font-size: 12px;
  }
}

@media (max-width: 720px) {
  .top-header .nav {
    width: min(100% - 36px, 700px);
  }

  .documents-header .login-button {
    display: none;
  }
}

@media (max-width: 420px) {
  .header-brand > span {
    display: none;
  }
}