body {
    background: url("../../img/about2.png") no-repeat center fixed;
    background-size: cover;
    background-color: rgba(100, 146, 235, 0.7);
    min-height: 100vh; 
    margin: 0;
    overflow-y: auto;
    padding-top: 95px;
    padding-bottom: 80px;
}
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 95px;
    background: rgba(255,255,255,0.65);
    z-index: 4;
}
/* 底部浅蓝半透栏 */
body::after{
    content: "";
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: rgba(210, 226, 242, 0.65);
    z-index: 4;
}

/* 修正logo位置，缩进进白条内，完整显示 */
.logo_img {
    position: fixed;
    top: -60px;      
    left: 20px;
    z-index: 99;
}
.logo_img img {
    height: 230px;
    width: auto;
    display: block;
}

.logo_img2 {
    position: fixed;
    bottom: -34px;
    left: 20px;
    z-index: 99;
}
.logo_img2 img {
    height: 150px;
    width: auto;
    display: block;
}

/* 隐藏首页多余元素，保留两个logo */
.big,
.banner_swiper,
.video_box {
    display: none !important;
}

/* 小熊容器：fixed悬浮，flex并排，间距缩小 */
/* 外层大容器：竖向一列，6组上下堆叠 */
.d {
    max-width: 1100px;
    margin: 120px auto 100px;
    padding: 0 30px;
    display: grid;
    grid-template-columns: 1fr; /* 只1列，竖向排列 */
    gap: 50px; /* 上下两组卡片之间的距离 */
    z-index: 2;
    position: relative;
}
/* 鼠标悬停效果 */
.d_item:hover {
    transform: scale(1.03) translateY(-4px);
    box-shadow: 0 16px 48px rgba(255, 255, 255, 0.6), 0 0 30px rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.15);
}


/* 单组内部：小熊和白框横向并排，拉近间距 */
.d_item {
    display: flex;
    align-items: center;
    gap: 8px; /* 同组小熊和白框距离，越小越近 */
}

.d1 {
    transform: translateX(-10px);
}
.d1 img {
    width: 450px;
    height: auto;
    margin-left: -20px;
}
.d1_box {
    min-width: 580px;
    min-height: 200px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 12px;
    backdrop-filter: blur(4px);
    font-size: 24px;
    line-height: 1.8;
    font-family: "华文圆体", "STYuanti", "微软雅黑", "PingFang SC", sans-serif;
}