/* 全站背景：压缩后的齿轮线稿 */
html {
    background-color: #f7f8f8;
}

body {
    background-color: transparent !important;
    background-image: none !important;
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    background:
        linear-gradient(
            105deg,
            rgba(255, 255, 255, 0.94) 0%,
            rgba(247, 250, 248, 0.9) 48%,
            rgba(255, 255, 255, 0.86) 100%
        ),
        url("/static/images/bg/site-bg-gears.jpg") right center / cover no-repeat;
    background-attachment: fixed;
}

@media (max-width: 768px) {
    body::before {
        background-attachment: scroll;
        background-position: right top;
        background-size: cover;
    }
}

/* APP WebView：不强行改背景（避免影响壳内体验） */
html.impamro-plus-app body::before {
    display: none;
}
html.impamro-plus-app body {
    background-color: #ffffff !important;
}