/* body 样式：整体背景和尺寸固定 */
body {
    width: 100%;
    height: 100vh; /* vh 是视口高度的百分比，100vh 表示全屏高度 */
    margin: 0; /* 避免默认的外边距 */
    padding: 0;
    background-color: #333;
}

/* 1.1 container */
.container {
    width: 100%;
    height: 100vh; /* vh 是视口高度的百分比，100vh 表示全屏高度 */
    margin: 0; /* 避免默认的外边距 */
    background-image: url(../../../assets/images/background.webp); /* 背景图片 */
    background-size: cover;
    background-position: center;
    overflow: hidden;
}

/* 标题容器 */
.title-section {
    width: 1920px;
    height: 170px;
    text-align: center;
}

.title-section h1 {
    font-family: 'Source Han Sans SC', sans-serif; /* 思源黑体 */
    font-weight: 900;
    font-size: 114px;
    color: #e9c388;
    text-shadow: 0 9px 13px rgba(0, 0, 0, 0.5); /* 阴影 */
}

/* 选题容器 */
.question-section {
    margin-top: 0px;
    margin-left: 150px;
    width: 1630px;
    height: 640px;
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 30px;
    /* background-image: url(../assets/images/background2.webp);
    background-position: center;
    background-size: cover; 
    background-repeat: no-repeat;  */
    border: 5px solid #e9c388;
    /* position: relative; */
}

/* 按钮网格容器 */
.grid {
    margin-top: 200px;
    display: grid;
    grid-template-columns: repeat(5, 1fr); /* 5列布局 */
    grid-gap: 20px;
    justify-items: center;
}

.question-item {
    width: 250px;
    height: 250px;
    background-image: url(../assets/images/button-large.png);
    background-position: center; /* 背景图片居中 */
    background-size: cover; /* 让图片覆盖整个按钮 */
    background-repeat: no-repeat; /* 防止图片重复 */

    font-family: 'Source Han Sans SC', sans-serif; /* 思源黑体 */
    font-weight: bold;
    font-size: 80px;
    color: #7b1800;
    display: flex;
    align-items: center;
    justify-content: center;
    /* border-radius: 5px; */
    cursor: pointer;
}

.question-item:hover {
    transform: scale(1.05);
}

/* 隐藏按钮但保留布局 */
.hidden {
    visibility: hidden;
}