.book-footer {
    padding: 20px;
    text-align: center;
    border-top: 1px solid #ddd;
    margin-top: 50px;
    color: #666;
    font-size: 14px;
}

.book-footer a {
    color: #42b983;
    text-decoration: none;
}

.book-footer a:hover {
    text-decoration: underline;
}

/* 隐藏左下角的 "本书使用 HonKit 发布" 文字 */
.gitbook-link {
    display: none !important;
}


/* 自定义版权信息 */
.book .page-inner::after {
    content: "Copyright © 2025-2026 www.dbnotes.cn.  All rights reserved. ";
    display: block;
    text-align: center;
    padding: 20px;
    margin-top: 50px;
    border-top: 1px solid #ddd;
    color: #666;
    font-size: 16px;
    position: absolute;  /* 固定在最底部 */
    bottom: 0;
    left: 0;
    right: 0;
} 

/* 将自定义版权信息放在右侧内容的最下面/最底层 */
.book-summary .summary li.gitbook-link { display: none; } 
.page-inner { padding-bottom: 120px; position: relative; min-height: 90vh; }
.page-inner::after { content: '本书使用 HonKit 发布'; position: absolute; bottom: 0; left: 0; right: 0; text-align: center; padding: 15px; color: #7e888b; font-size: 14px; border-top: 1px solid #e7e7e7; }
.page-inner { margin: 0 auto; }
/*.page-inner { margin: 0 !important; }  ##靠左显示内容*/
/*.page-inner { margin: 0 auto; }        ##居中显示内容*/

/* 
┌─────────────────────────────────┐
│                                 │
│      页面内容区域                 │  ← min-height: 90vh (至少占90%屏幕高度)
│                                 │
│                                 │
│                                 │
├─────────────────────────────────┤  ← padding-bottom: 60px (底部留60px空间)
│     版权信息                     │  ← position: absolute; bottom: 0;
└─────────────────────────────────┘
 */


/* 自定义打赏按钮样式 */
.gitbook-donate {
    position: relative;
    margin-top: 20px;
    padding: 20px;
    border-top: 1px solid #e7e7e7;
    background-color: #f8f9fa;
}

.gitbook-donate .donate-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #333;
}

.gitbook-donate .donate-button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.gitbook-donate .donate-button:hover {
    background-color: #0056b3;
}