html, body {
    min-height: 100%;
    margin: 0;
    padding: 0;
}

*, *:before, *:after {
    box-sizing: inherit; /* 新增 */
  }

.content {
    /* padding-bottom: 70px; */
    flex: 1;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #202020;
    color: #f0f0f0;
    display: flex; /* 新增 */
    flex-direction: column; /* 新增 */
    min-height: 100vh; /* 更改为 100vh */
}

.begin {
    font-family: 'Helvetica Neue', sans-serif;
    text-align: center;
    padding-top: 50px; /* Vertically center the content */
}

#game-title {
    color: #f0f0f0; /* 标题颜色改为微亮的白色 */
    font-size: 48px;
    margin-bottom: 30px; /* Space before the start button */
}

#opening {
    color: #f0f0f0;
    font-size: 20px;
    white-space: pre-wrap; /* 保留空白符和换行符 */
    word-wrap: break-word; /* 在需要的时候进行单词换行 */
    text-align: center; /* 使文本居中 */
    padding: 20px;
    margin-top: 50px; /* 或者根据需要调整 */
    max-width: 80%; /* 容器最大宽度 */
    margin-left: auto;
    margin-right: auto;
    background-color: #282828; /* 与之前的风格保持一致 */
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(255, 255, 255, 0.1); /* 细微的阴影 */
}

#start-button {
    display: inline-block;
    width: 200px;
    margin-top: 50px;
    padding: 10px 20px;
    font-size: 24px;
    background-color: #f0f0f0; /* 按钮背景色为微亮的白色 */
    color: #202020; /* 文本颜色为背景的深灰色 */
    border: 2px solid #f0f0f0; /* 边框颜色与背景相同 */
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
    text-decoration: none; /* Remove underline from links */
}

#start-button:hover {
    background-color: #e5e5e5; /* 鼠标悬停时的背景色稍亮 */
    color: #202020; /* 鼠标悬停时的字体颜色不变 */
}

.card {
    display: none;
    flex-wrap: wrap;
    max-width: 80%;
    padding: 15px;
    margin: 20px auto;
    border: 1px solid #383838; /* 边框颜色使用更深的灰色 */
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(255, 255, 255, 0.05); /* 阴影颜色更为微妙 */
    background-color: #282828; /* 卡片背景色使用更柔和的深灰色 */
}

.card-title {
    flex-basis: 100%;
    font-weight: bold;
    margin-bottom: 10px;
    font-size: 18px;
    text-align: center;
    color: #f0f0f0; /* 标题颜色 */
}

.card-item {
    margin-bottom: 8px;
    font-size: 14px;
    color: #d0d0d0; /* 卡片项颜色为稍亮的灰色 */
}

.card-row {
    display: flex;
    flex-basis: 100%;
    justify-content: space-between;
}

.centered {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 92vh;
}

#option-container button {
    margin: 5px;
    background-color: #383838; /* 选项按钮使用更深的灰色 */
    color: #f0f0f0; /* 文本颜色为微亮的白色 */
    font-size: 15px;
    text-align: left;
    width: 86%;
    display: block;
}

#bold-text {
    font-weight: bolder;
}

.buttons {
    display: flex;
    gap: 10px;
}

button {
    padding: 8px 16px;
    font-size: 16px;
    border: 2px solid #f0f0f0; /* 按钮边框设置为微亮的白色 */
    border-radius: 5px;
    cursor: pointer;
    background-color: #383838; /* 按钮背景色 */
    color: #f0f0f0; /* 按钮文本色 */
    transition: background-color 0.3s, color 0.3s;
}

button:hover {
    background-color: #505050; /* 鼠标悬停时按钮背景色稍变亮 */
}

button:disabled {
    background-color: #303030; /* 不可用按钮背景色更深 */
    color: #606060; /* 不可用按钮文本色更淡 */
    cursor: not-allowed;
}

.markdown-container {
    border: 1px solid #383838;
    padding: 15px;
    margin-bottom: 10px;
    height: 70%;
    width: 80%;
    max-height: 70%;
    max-width: 80%;
    overflow-y: auto;
    background-color: #282828; /* 背景色与卡片背景一致 */
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(255, 255, 255, 0.05);
}

.site-footer {
    text-align: center;
    background-color: #f2f2f2;
    color: #333;
    border-top: 1px solid #e1e1e1;
    font-size: 14px;
    bottom: 0;
    width: 100%;
    height: 45px;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.updated {
    animation: blink 0.8s linear infinite;
    font-weight: bold;
}