/* 全局背景动画 */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(45deg, #ff8c00, #ff2a68, #6a2bd9, #00c6ff);
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
    color: #fff;
}

@keyframes gradientAnimation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 其他样式 */
header {
    background-color: rgba(0, 0, 0, 0.7);  /* 半透明黑色背景 */
    color: #fff;
    padding: 1rem;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 1rem;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}

h2 {
    text-align: center;
    margin-top: 20px;
}

.music-player audio {
    display: block;
    margin: 0 auto;
}

.comment-list {
    margin-top: 20px;
    background-color: rgba(255, 255, 255, 0.9);  /* 半透明白色背景 */
    padding: 10px;
}

textarea {
    width: 100%;
    height: 100px;
    margin-bottom: 10px;
}

button {
    padding: 10px 15px;
    background-color: #008CBA;
    color: #fff;
    border: none;
    cursor: pointer;
}