/* 总容器默认隐藏 */
#guide-container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 9999;
}

/* 背景图片容器 */
#background-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* 背景遮罩层 */
#background-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3); /* 半透明黑色遮罩 */
    z-index: 1;
}

/* 背景图片样式 */
.background-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

/* 当前显示的背景图片 */
.background-image.active {
    opacity: 1;
}

/* 内容区域 */
#content-area {
    position: absolute;
    top: auto;
    bottom: 10%;
    right: 5%;
    left: 5%;
    transform: none;
    text-align: center;
    color: white;
    max-width: 90%;
    z-index: 10;
}

/* 标题样式 */
#main-title {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    transition: all 0.5s ease;
}

/* 内容样式 */
#main-content {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    line-height: 1.6;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    transition: all 0.5s ease;
}

/* 按钮样式 */
#next-button {
    padding: 10px 20px;
    font-size: 1rem;
    background-color: rgba(255, 255, 255, 0.9);
    color: #333;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

#next-button:hover {
    background-color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

#next-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* 手机端响应式设计 */
@media (max-width: 768px) {
    /* 背景图片调整 */
    .background-image.image-1 {
        background-position: 70% center;
    }
    
    .background-image.image-2 {
        background-position: 35% center;
    }
    
    .background-image.image-3 {
        background-position: 35% center;
    }

}

/* 更小屏幕的适配 */
@media (max-width: 480px) {
    #main-title {
        font-size: 1.8rem;
    }
    
    #main-content {
        font-size: 1.2rem;
        margin-bottom: 1.5rem;
    }
    
    #next-button {
        font-size: 0.9rem;
        padding: 8px 16px;
    }
}