/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255,255,255,0.95);
    padding: 15px;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.gallery {
    margin-top: 60px;
    padding: 10px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 10px;
}

.img-box {
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s;
}

.img-box:hover {
    transform: scale(0.98);
}

.img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 9/16;
}

.footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    background: rgba(0,0,0,0.8);
    color: white;
    text-align: center;
    padding: 12px;
    font-family: Arial;
}

#sortBtn {
    padding: 10px 25px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: 0.3s;
}

#sortBtn:hover {
    background: #0056b3;
}

footer a {
  color: white;
}