.site-topbar {
  position: fixed;
  z-index: 1400;
  top: 0;
  right: 0;
  left: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  box-sizing: border-box;
  width: 100%;
  min-height: calc(48px + env(safe-area-inset-top));
  padding:
    calc(4px + env(safe-area-inset-top))
    calc(12px + env(safe-area-inset-right))
    4px
    calc(12px + env(safe-area-inset-left));
  color: var(--alive-ink);
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  pointer-events: none;
  transition: color 260ms ease;
}

.site-topbar__menu,
.site-drawer__close {
  display: grid;
  place-items: center;
  color: var(--alive-ink);
  border: 1px solid var(--alive-border-soft);
  background: var(--alive-surface);
}

.site-topbar__menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  pointer-events: auto;
}

.site-topbar__menu span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: width 220ms ease, transform 220ms ease;
}

.site-topbar__menu span:nth-child(2) {
  width: 13px;
}

.site-topbar__menu:hover span:nth-child(2) {
  width: 18px;
}

.site-topbar__spacer {
  min-width: 0;
}

.site-topbar__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
}

.site-topbar .color-mode-toggle {
  position: static;
  width: 48px;
  height: 28px;
  min-height: 0;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.site-topbar .color-mode-toggle:hover {
  background: transparent;
  box-shadow: none;
}

.site-topbar__admin {
  height: 28px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  color: var(--alive-ink);
  border: 1px solid var(--alive-border-soft);
  border-radius: 999px;
  background: var(--alive-surface);
  font: 650 .72rem/1 "Segoe UI Variable", "Microsoft YaHei", sans-serif;
  transition: color 220ms ease, border-color 220ms ease, background 220ms ease;
}

.site-topbar__admin:hover {
  opacity: 1;
  border-color: var(--alive-accent);
}

.site-topbar__admin span {
  font: 500 .9rem/1 "Segoe UI Symbol", sans-serif;
}

.site-topbar__admin strong {
  font: inherit;
}

.site-drawer-backdrop {
  position: fixed;
  z-index: 1480;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  background: rgba(4, 5, 10, .46);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  transition: opacity 300ms ease, visibility 300ms ease;
}

.site-drawer {
  position: fixed;
  z-index: 1490;
  top: 0;
  bottom: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  width: min(360px, calc(100% - 42px));
  padding:
    calc(24px + env(safe-area-inset-top))
    20px
    calc(22px + env(safe-area-inset-bottom));
  color: var(--alive-ink);
  border-right: 1px solid var(--alive-border);
  background:
    radial-gradient(circle at 10% 0%, rgba(124, 92, 255, .2), transparent 35%),
    var(--alive-panel);
  box-shadow: 30px 0 90px rgba(0, 0, 0, .3);
  transform: translateX(-105%);
  backdrop-filter: blur(34px) saturate(155%);
  -webkit-backdrop-filter: blur(34px) saturate(155%);
  transition: transform 380ms cubic-bezier(.22, 1, .36, 1);
}

body.site-drawer-open {
  overflow: hidden;
}

body.site-drawer-open .site-drawer-backdrop {
  opacity: 1;
  visibility: visible;
}

body.site-drawer-open .site-drawer {
  transform: translateX(0);
}

.site-drawer__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 4px 2px 20px;
  border-bottom: 1px solid var(--alive-border-soft);
}

.site-drawer__head div {
  display: grid;
}

.site-drawer__head span {
  color: var(--alive-accent);
  font: 750 .62rem/1 "Segoe UI Variable", sans-serif;
  letter-spacing: .18em;
}

.site-drawer__head strong {
  margin-top: 7px;
  font: 740 1.65rem/1.1 "Segoe UI Variable", "Microsoft YaHei", sans-serif;
}

.site-drawer__close {
  width: 38px;
  height: 38px;
  padding: 0 0 3px;
  border-radius: 14px;
  font: 350 1.55rem/1 "Segoe UI Variable", sans-serif;
}

.site-drawer__nav {
  display: grid;
  gap: 9px;
  margin-top: 20px;
}

.site-drawer__nav a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  align-items: center;
  gap: 11px;
  padding: 13px;
  color: var(--alive-ink);
  border: 1px solid transparent;
  border-radius: 17px;
  background: transparent;
  transition:
    color 220ms ease,
    border-color 220ms ease,
    background 220ms ease,
    transform 220ms ease;
}

.site-drawer__nav a:hover,
.site-drawer__nav a[aria-current="page"] {
  opacity: 1;
  border-color: var(--alive-border-soft);
  background: var(--alive-surface);
  transform: translateX(3px);
}

.site-drawer__number {
  color: var(--alive-accent);
  font: 760 .62rem/1 "Segoe UI Variable", sans-serif;
  letter-spacing: .08em;
}

.site-drawer__nav a > span:last-child {
  display: grid;
}

.site-drawer__nav strong {
  font: 680 .92rem/1.25 "Segoe UI Variable", "Microsoft YaHei", sans-serif;
}

.site-drawer__nav small {
  margin-top: 4px;
  color: var(--alive-muted);
  font: 450 .7rem/1.3 "Segoe UI Variable", "Microsoft YaHei", sans-serif;
}

.site-drawer__foot {
  margin: auto 2px 0;
  color: var(--alive-faint);
  font: 500 .68rem/1.45 "Segoe UI Variable", "Microsoft YaHei", sans-serif;
}

@media (max-width: 620px) {
  .site-topbar {
    top: 0;
    width: 100%;
    min-height: calc(48px + env(safe-area-inset-top));
    padding-right: calc(10px + env(safe-area-inset-right));
    padding-left: calc(10px + env(safe-area-inset-left));
    border-radius: 0;
  }

  .site-topbar__menu {
    width: 34px;
    height: 34px;
  }

  .site-topbar .color-mode-toggle {
    width: 48px;
  }

  .site-topbar__actions {
    gap: 7px;
  }

  .site-topbar__admin {
    width: 30px;
    padding: 0;
    justify-content: center;
  }

  .site-topbar__admin strong {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-drawer,
  .site-drawer-backdrop,
  .site-topbar__menu span,
  .site-drawer__nav a {
    transition: none;
  }
}