* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    width: 100vw;
    min-height: 100vh;
    background-color: #e8e8e8;
    /* 浅灰色背景 */
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

.polaroid img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    background-color: #eee;
    border: 1px solid #f0f0f0;
}

.polaroid-caption {
    position: absolute;
    bottom: 15px;
    left: 0;
    width: 100%;
    text-align: center;
    font-family: 'Courier New', Courier, monospace;
    color: #555;
    font-size: 14px;
}

@keyframes dropIn {
    from {
        opacity: 0;
        transform: translateY(-50px) rotate(5deg);
    }

    to {
        opacity: 1;
        transform: translateY(0) rotate(-2deg);
    }
}

/* 底部导航 */
.bottom-nav {
    margin-top: auto;
    padding: 20px;
    display: flex;
    gap: 20px;
}

.nav-item {
    color: #888;
    text-decoration: none;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-item:hover {
    color: #333;
}