/* ── 加载器 iframe 共享样式 ── */
#global-loader-iframe,
#theme-color-loader-iframe {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    background-color: #cdb09c; /* 与加载动画背景同色，防止短暂闪现 */
    transition: transform 0.5s ease;
}

#global-loader-iframe  { z-index: 10010; }
#theme-color-loader-iframe {
    z-index: 10009;
    transform: translateY(100%); /* 默认隐藏，仅主题切换时显示 */
}

#global-loader-iframe.start,
#theme-color-loader-iframe.start {
    animation: loaderSlideUp 0.3s ease-out forwards;
}

#global-loader-iframe.end,
#theme-color-loader-iframe.end {
    animation: loaderSlideAway 0.5s ease-out forwards;
}

@keyframes loaderSlideUp {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
}

@keyframes loaderSlideAway {
    from { transform: translateY(0); }
    to   { transform: translateY(-100%); }
}