/* 基础样式 */
body {
    font-family: '微软雅黑', 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    max-width: 100%;
    overflow-x: hidden;
    background-color: #f9f9f9;
}

/* 容器样式 */
.container {
    width: 90%;
    max-width: 800px;
    margin: 0 auto;
    padding: 30px;
    background-color: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border-radius: 8px;
}

/* 标题样式 */
h1 {
    text-align: center;
    color: #AE2E19;
    margin-bottom: 30px;
    font-weight: bold; /* 改为加粗 */
    font-size: 24px; /* 可以根据需要调整大小 */
}

h2, h3, h4 {
    margin-top: 30px;
    margin-bottom: 15px;
    color: #AE2E19;
    font-weight: 400;
}

/* 段落样式 */
p {
    margin-bottom: 20px;
    line-height: 1.8;
}

/* 章节样式 */
.chapter {
    margin-bottom: 30px;
    border: none;
}

.chapter-title {
    background-color: white;
    color: #AE2E19;
    padding: 12px 15px;
    cursor: pointer;
    font-weight: bold;
    border-radius: 5px;
    transition: all 0.3s;
    border: 1px solid #AE2E19;
}

.chapter-title:hover {
    background-color: #AE2E19;
    color: white;
}

.chapter-content {
    padding: 20px 0;
    display: none;
}

.chapter-content.active {
    display: block;
}

/* 问题样式 */
.question {
    margin-bottom: 25px;
    border-bottom: 1px solid #eee;
    padding-bottom: 15px;
}

.question-title {
    font-weight: bold;
    margin-bottom: 12px;
    color: #444;
}

/* 强调文本样式 */
.highlight {
    color: #AE2E19;
    font-weight: bold;
}

/* 图片样式 */
.partner-image, .bank-image {
    max-width: 100%;
    height: auto;
    margin: 25px auto;
    display: block;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* 回到顶部按钮样式 */
#backToTop {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 99;
    border: 2px solid #AE2E19;
    outline: none;
    background-color: white;
    color: #AE2E19;
    cursor: pointer;
    padding: 10px 13px;
    border-radius: 50%;
    font-size: 18px;
    opacity: 0.7;
    transition: all 0.3s;
}

#backToTop:hover {
    opacity: 1;
    background-color: #AE2E19;
    color: white;
}

/* 响应式布局 */
@media screen and (max-width: 768px) {
    body {
        font-size: 15px;
    }

    .container {
        width: 95%;
        padding: 20px;
    }

    h1 {
        font-size: 22px;
    }

    .partner-image, .bank-image {
        max-height: 250px;
    }
}

@media screen and (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .container {
        width: 100%;
        padding: 15px;
    }

    h1 {
        font-size: 20px;
    }

    .partner-image, .bank-image {
        max-height: 180px;
    }
}