/* 代码块容器设为相对定位 */
figure.highlight {
    position: relative !important;
}

/* Copy 按钮样式 */
figure.highlight .copy-btn {
    display: inline-block;
    position: absolute;
    top: 0;
    right: 0;
    padding: 2px 8px;
    background-color: rgba(255, 255, 255, 0.6);
    color: #333;
    font-size: 12px;
    font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
    line-height: 1.5;
    cursor: pointer;
    border-bottom-left-radius: 4px;
    opacity: 1; /* 始终显示 */
    transition: background-color 0.2s;
    user-select: none;
    z-index: 99;
    border: 1px solid rgba(0,0,0,0.1);
    border-top: none;
    border-right: none;
}

/* 按钮悬停效果 */
figure.highlight .copy-btn:hover {
    background-color: #f0f0f0;
    color: #000;
}

/* 复制成功后的状态 */
figure.highlight .copy-btn.copied {
    background-color: #4caf50;
    color: white;
}