/* =========================================================
   Language Switcher · 语言切换器
========================================================= */
.lang-switcher {
  position: relative;
  display: inline-flex;
  align-items: center;
  margin-left: 12px;
}
.lang-switcher-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-1);
  transition: all .2s;
}
.lang-switcher-btn:hover {
  background: rgba(14, 165, 233, 0.06);
  border-color: var(--line);
}
.lang-switcher-btn svg {
  width: 18px;
  height: 18px;
  color: var(--text-2);
  transition: color .2s;
}
.lang-switcher-btn:hover svg {
  color: var(--brand);
}
/* 透明导航时的白色样式 */
.nav:not(.scrolled) .lang-switcher-btn {
  color: rgba(255,255,255,0.9);
}
.nav:not(.scrolled) .lang-switcher-btn svg {
  color: rgba(255,255,255,0.8);
}
.nav:not(.scrolled) .lang-switcher-btn:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
}
.nav:not(.scrolled) .lang-switcher-btn:hover svg {
  color: #fff;
}

/* 下拉菜单 */
.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 140px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(11, 18, 32, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all .2s;
  z-index: 200;
  overflow: hidden;
}
.lang-switcher.open .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.lang-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-1);
  cursor: pointer;
  transition: background .15s;
  text-decoration: none;
}
.lang-option:hover {
  background: rgba(14, 165, 233, 0.06);
}
.lang-option.active {
  color: var(--brand);
  background: rgba(14, 165, 233, 0.04);
}
.lang-option .lang-flag {
  font-size: 16px;
  line-height: 1;
}

/* 移动端语言切换 */
.mobile-lang-switch {
  padding: 12px 40px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 12px;
}
.mobile-lang-switch a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  transition: all .2s;
}
.mobile-lang-switch a:hover,
.mobile-lang-switch a.active {
  color: var(--brand);
  border-color: var(--brand);
  background: rgba(14, 165, 233, 0.04);
}