.secret-content {
    background: #ffffff;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    margin: 15px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    padding: 25px;
}

.secret-tip {
    color: #6c757d;
    font-size: 16px;
    margin-bottom: 20px;
    text-align: center;
}

.secret-preview {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 6px;
    color: #adb5bd;
    font-style: italic;
    margin: 15px 0;
    text-align: left;
}

.secret-progress {
    margin-top: 20px;
    text-align: center;
}

.progress-text {
    color: #868e96;
    font-size: 14px;
    margin-bottom: 8px;
}

.progress-bar {
    background: #e9ecef;
    height: 6px;
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto;
    max-width: 300px;
}

.progress {
    background: #228be6;
    height: 100%;
    transition: width 0.3s ease;
}

.secret-content.revealed {
    text-align: left;
    animation: fadeIn 0.5s ease-in-out;
}

.secret-content.revealed img {
    max-width: 100%;
    height: auto;
    margin: 10px 0;
}

.secret-content.revealed p {
    margin: 1em 0;
    line-height: 1.6;
}

.secret-content.revealed h1,
.secret-content.revealed h2,
.secret-content.revealed h3,
.secret-content.revealed h4,
.secret-content.revealed h5,
.secret-content.revealed h6 {
    margin: 1.2em 0 0.6em;
}

.secret-content.revealed ul,
.secret-content.revealed ol {
    padding-left: 2em;
    margin: 1em 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .secret-content {
        padding: 20px;
    }
    
    .secret-tip {
        font-size: 14px;
    }
    
    .secret-preview {
        padding: 12px;
    }
}