/* custom.css */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    /* 更易读的文本颜色 */
    background-color: #f9f9f9;
    /* 背景颜色 */
    margin: 0;
    padding: 0;
}

.container-lg {
    max-width: 900px;
    /* 限制容器宽度以提高可读性 */
    margin: 0 auto;
    /* 居中对齐容器 */
    padding: 20px;
}

.skeleton-bg {
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    transition: opacity 1s ease-in-out;
    opacity: 0;
}

.skeleton-bg.loaded {
    opacity: 1;
}

.skeleton {
    text-align: center;
}

.loader {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: conic-gradient(#3498db, #f3f3f3, #3498db);
    animation: spin 1.5s linear infinite;
    margin: 20px auto;
}

.loader::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 60px;
    background: #f9f9f9;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.content {
    display: none;
}

.loaded .skeleton {
    display: none;
}

.loaded .content {
    display: block;
}

p {
    font-size: 18px;
    /* 增大字体大小 */
    line-height: 1.8;
    /* 提高行高以增加可读性 */
    margin: 0 0 20px 0;
    /* 添加下边距 */
    padding: 0;
    text-align: justify;
    word-break: break-word;/* 防止长单词/网址溢出 */
    color: #444;/* 稍深的文本颜色 */
}