body{
    background: linear-gradient(150deg,#ffdbdb,#F2E8E8,#FCFAFA) !important;
}
#primary {
    max-width: 1440px;
}
.post .post-content img{
    width: 50%;
    margin: 0 auto;
    display: block;
    padding-top: 6px;
}
p {
    font-size: 1.1em;
    text-indent: 2em;
    font-family: 'Harmony_Regular','Microsoft JhengHei',"Open Sans","PingFang SC","Hiragino Sans GB","Microsoft Yahei","Microsoft Jhenghei",sans-serif;
}
.over-flash {
    height: 100vh;
    width: 100vw;
    background-color: rgba(0,0,0,0);
    position: fixed; 
    pointer-events: none;
    top: 0;
    left: 0;
}
#plane{
    color: #fff;
    font-size: 70px;
    /* 绝对定位 */
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
}
.photo-album{
    display: flex;
    flex:1;
    max-width: 1440px;
    padding: 0 3rem;
    margin: 0 auto;
    overflow: auto;
    align-items: flex-start;
    justify-content: center;
}
.card{
    flex: 1 1 1%;
    position: relative;
    opacity: 0.5;
    transition: flex 600ms cubic-bezier(0.25,1,0.5,1), opacity 250ms ease;
}
/* 鼠标悬停在卡片上时，调整卡片的弹性基础尺寸，使其占据容器30%的空间宽度，实现悬停时的视觉效果变化 */
.card:hover{
    flex-basis: 30%;
}
/* 卡片内部结构样式 */
.card-inner{
    margin: 0.25rem;
    background: #fff;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    max-height: 200px;
}
.card .picture{
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
}
.card .picture img{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    padding-top: 0 !important;
    width: 100% !important;
}
.card.is-active,
.card:hover{
    opacity: 1;
}
.card:nth-child(2),
.card:nth-child(5),
.card:nth-child(9){
    margin-top: 0;
}
.card:nth-child(2),
.card:nth-child(4),
.card:nth-child(6),
.card:nth-child(8),
.card:nth-child(10){
    margin-top: 2.5%;
}
.card:nth-child(3),
.card:nth-child(7){
    margin-top: 5%;
}

/* 九宫格（微信朋友圈风格） */
.nine-grid{
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.75rem;
    max-width: 1440px;
    padding: 0 3rem;
    margin: 1.25rem auto;
    align-items: stretch;
    justify-items: stretch;
}
.nine-grid .nine-item{
    position: relative;
    width: 100%;
    /* 使用宽高比保持方形格子 */
    padding-top: 100%;
    overflow: hidden;
    border-radius: 8px;
    background: #f6f6f6;
}
.nine-grid .nine-item .picture,
.nine-grid .nine-item img{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.nine-grid .nine-item img{
    object-fit: cover; /* 居中并 cover */
    object-position: center;
    display: block;
    transition: transform 260ms ease;
}
.nine-grid .nine-item:hover img{
    transform: scale(1.06);
}

/* 响应式：窄屏变成 2 列或 1 列 */
@media (max-width: 720px){
    .nine-grid{
        grid-template-columns: repeat(4, 1fr);
    }
}
@media (max-width: 420px){
    .nine-grid{
        grid-template-columns: 3fr;
    }
}