/* 背景色轮转（淡雅但对比更高） */
.xiyu_bg {
    position: fixed;
    inset: 0;
    /*background: conic-gradient(from var(--rotate-angle, 0deg), rgb(198 70 70 / 60%), rgba(220, 230, 255, 0.6), rgb(66 190 134 / 60%), rgba(255, 240, 200, 0.6), rgb(57 51 42 / 25%), rgba(255, 200, 200, 0.6));*/
    /*background: conic-gradient(from var(--rotate-angle, 0deg), rgb(198 70 70 / 60%), rgba(220, 230, 255, 0.6), rgb(66 190 134 / 60%), rgba(255, 240, 200, 0.6), rgb(81 29 132 / 60%), rgba(255, 200, 200, 0.6));*/
    background: linear-gradient(to right, rgb(66 190 134 / 5%), rgb(66 190 134 / 10%), rgba(66 190 134 / 20%), #f2f2f2);
    /*animation: rotateHue 240s linear infinite;*/
    /*filter: blur(30px) saturate(130%);*/
}

/* 半透明暗幕，提升文字对比 */
.xiyu_mask {
    position: fixed;
    inset: 0;
    /*background: rgba(0, 0, 0, 0.35);*/
    z-index: 0;
}

/* 呼吸光层 */
.xiyu_overlay {
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.25), transparent 40%),
    radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.15), transparent 40%);
    animation: breathe 20s ease-in-out infinite;
    mix-blend-mode: screen;
    z-index: 1;
}

@keyframes rotateHue {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes breathe {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
}

/* 文字更显眼（加阴影和微光） */
.content {
    position: relative;
    z-index: 2;
    color: #fff;
    text-align: center;
    font-family: system-ui, sans-serif;
    top: 40%;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.6),
    0 0 15px rgba(150, 200, 255, 0.5);
}




.navbar-default {
    background-color: transparent;
}

.modal-content {
    /*background: rgb(245, 238, 238);*/
    /*background: linear-gradient(to right, rgb(245  238  225), rgb(245  238  230 ), rgb(245  238  233  ), rgb(245  238  238  ), rgba(245  238  245  ), #f2f2f2);*/
    background: linear-gradient(to right, rgb(245  238  225), rgb(245  238  230  ), rgb(245  238  235 ), rgb(245  238  240 ), rgba(245  238  245  ), #f2f2f2);

}