.side-panel.glass-panel {
    position: fixed;
    right: calc(20px + 400px + 10px);
    top: 80px;
    bottom: unset !important;
    width: 50px;
    padding: 0; /* 面板内部padding全部去掉 */
    color: #fff;
    background: rgba(45, 45, 48, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 90;
    overflow-y: auto;
    max-height: calc(100vh - 100px);
}
.side-panel h4 {
    display: none;
}
.side-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0; /* 卡片之间间距清零 */
}
.side-card {
    position: relative;
    padding: 0;
    background: transparent;
    border-radius: 0;
    cursor: pointer;
    border: none;
    transition: background 0.2s ease;
    overflow: hidden;
}
.side-card img {
    width: 100%;
    margin: 0; /* 图片外边距清除 */
    aspect-ratio: 1/1;
    object-fit: cover;
    border-radius: 0;
    display: block;
}
/* 悬浮浅黄铺满 */
.side-card:hover {
    background: rgba(255, 200, 60, 0.25);
}
/* 选中黄色铺满 */
.side-card.active {
    background: rgba(255, 200, 60, 0.6);
}
.side-card.active:hover {
    background: rgba(255, 200, 60, 0.6);
}
/* 右上角10×10标记图标 */
.card-mark-icon {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 10px;
    height: 10px;
}
.card-mark-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.mark-tag {
    display: none;
}