.site {
  --header-h: 64px;
  --max: 1120px;
  --text: #f4f6fc;
  --muted: #8b95a8;
  --accent: #b8c9f0;
  --surface-2: rgba(255, 255, 255, 0.035);
  --border: rgba(255, 255, 255, 0.08);
  --bg: #050810;

  color: var(--text);
  font-family: "Manrope", Inter, system-ui, -apple-system, sans-serif;
}

.site-header {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1100;
  width: calc(100% - 24px);
  max-width: var(--max);
  padding: 10px 14px;
  border-radius: 18px;
  border: 1px solid rgba(201, 216, 255, 0.14);
  background: rgba(8, 12, 22, 0.72);
  backdrop-filter: blur(18px) saturate(1.25);
  -webkit-backdrop-filter: blur(18px) saturate(1.25);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  position: relative;
}

.site-header__toggle {
  display: none;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.2s, border-color 0.2s;
}

.site-header__toggle:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.16);
}

.site-header__toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px rgba(125, 211, 252, 0.45);
}

.site-header__toggle-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 20px;
}

.site-header__toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 1px;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.site-header.is-open .site-header__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.is-open .site-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header.is-open .site-header__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header__quick {
  display: none;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: inherit;
  user-select: none;
}

.site-brand__logo {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  flex-shrink: 0;
  display: block;
  object-fit: cover;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.site-brand__logo::before,
.site-brand__logo::after {
  content: none;
  display: none;
}

.site-brand__text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.site-brand__kicker {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.site-brand__name {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.site-nav__link {
  padding: 8px 13px;
  border-radius: 10px;
  font-family: "Manrope", Inter, system-ui, -apple-system, sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: #9aa4b8;
  text-decoration: none;
  border: 1px solid transparent;
  -webkit-font-smoothing: antialiased;
  transition: color 0.22s ease, background 0.22s ease, border-color 0.22s ease;
}

.site-nav__link:hover {
  color: #eef1f8;
  background: rgba(255, 255, 255, 0.045);
  border-color: rgba(255, 255, 255, 0.07);
}

.site-nav__link:focus-visible {
  outline: none;
  color: var(--text);
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px rgba(125, 211, 252, 0.35);
}

@media (max-width: 767px) {
  .site {
    --header-h: 52px;
  }

  .site-header {
    top: max(8px, env(safe-area-inset-top, 0px));
    width: calc(100% - 16px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px));
    max-width: none;
    padding: 6px 8px 6px 10px;
    border-radius: 16px;
  }

  .site-header__inner {
    gap: 8px;
  }

  .site-brand {
    flex: 1 1 auto;
    gap: 10px;
  }

  .site-brand__logo {
    width: 36px;
    height: 36px;
  }

  .site-brand__kicker {
    display: none;
  }

  .site-header__quick {
    display: none;
  }

  .site-header__toggle {
    display: flex;
    margin-left: auto;
  }

  .site-nav {
    display: flex;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    margin: 0;
    padding: 8px;
    max-height: min(72vh, 400px);
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    border-radius: 14px;
    border: 1px solid rgba(201, 216, 255, 0.14);
    background: rgba(10, 14, 26, 0.96);
    backdrop-filter: blur(20px) saturate(1.2);
    -webkit-backdrop-filter: blur(20px) saturate(1.2);
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.5);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-10px) scale(0.98);
    transform-origin: top center;
    pointer-events: none;
    transition:
      opacity 0.32s cubic-bezier(0.22, 1, 0.36, 1),
      transform 0.32s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0.32s;
  }

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

  .site-nav__link {
    width: 100%;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    white-space: normal;
    border-radius: 12px;
    padding: 12px 16px;
    color: var(--text);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    opacity: 0;
    transform: translateY(-6px);
    transition:
      opacity 0.26s ease,
      transform 0.26s ease,
      color 0.22s ease,
      background 0.22s ease,
      border-color 0.22s ease;
  }

  .site-header.is-open .site-nav__link {
    opacity: 1;
    transform: translateY(0);
  }

  .site-header.is-open .site-nav__link:nth-child(1) {
    transition-delay: 0.05s;
  }

  .site-header.is-open .site-nav__link:nth-child(2) {
    transition-delay: 0.09s;
  }

  .site-header.is-open .site-nav__link:nth-child(3) {
    transition-delay: 0.13s;
  }

  .site-header.is-open .site-nav__link:nth-child(4) {
    transition-delay: 0.17s;
  }

  body.site-nav-open {
    overflow: hidden;
    touch-action: none;
  }
}

@media (max-width: 767px) and (prefers-reduced-motion: reduce) {
  .site-nav,
  .site-nav__link {
    transition: none;
  }
}