.comment-echo-box {
    position: fixed;
    z-index: 9999;
    padding: 15px;
    background-color: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);

    /* --- 响应式改进 --- */
    max-width: 400px; /* 在大屏幕上，最大宽度为 400px */
    width: calc(100% - 40px); 
    box-sizing: border-box; 

    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
}

.comment-echo-box.bottom-left {
    bottom: 20px;
    left: 20px;
}

.comment-echo-box.bottom-right {
    bottom: 20px;
    right: 20px;
}

.comment-echo-box.show {
    opacity: 1;
    transform: translateY(0);
}

.comment-echo-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    color: #555;
}

.comment-echo-title {
    font-weight: bold;
    font-size: 15px;
}

.comment-echo-title-icon {
    display: inline-block;
    background: #888;
    color: #fff;
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 4px;
    margin-right: 8px;
    font-style: normal;
}

.comment-echo-close {
    cursor: pointer;
    font-size: 20px;
    font-weight: bold;
    color: #aaa;
    transition: color 0.3s;
}

.comment-echo-close:hover {
    color: #555;
}

.comment-echo-author {
    font-weight: bold;
    color: #0056b3;
    margin-right: 5px;
}

.comment-echo-content {
    margin-bottom: 10px;
    word-wrap: break-word;
}

.comment-echo-post-link {
    font-size: 12px;
    color: #888;
}

.comment-echo-post-link a {
    color: #888;
    text-decoration: none;
    border-bottom: 1px dotted #ccc;
    transition: color 0.3s, border-color 0.3s;
}

.comment-echo-post-link a:hover {
    color: #333;
    border-color: #333;
}