* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', Arial, sans-serif; /* 📌 Google Fonts 作为默认字体 */
    font-weight: 300; /* 📌 细字体 */
    scroll-behavior: smooth;
}

body {
    /* background-image: url('image.png'); */
    background-color: #191919;
    color: #e6e6e6;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    font-size: 4rem;
    z-index: 1;
}
h2 {
    font-size: 2rem;
    z-index: 1;
}
h3 {
    font-size: 2rem;
    z-index: 1;
}
p {
    z-index: 1;
}
ul {
    margin-left: 4rem;
    z-index: 1;
}


/* 上方 4×3 方框部分，占满整个视口 */
#wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100vh;
    width: 100%;
    color: white;
    text-align: left;
    opacity: 0;  /* 初始透明度 */
    transform: translateY(30px); /* 初始向下偏移 */
    animation: fadeInWrapper 1s ease-out forwards; /* 1秒淡入动画 */
    padding-left: 10vw; /* 让文本不会紧贴左边 */
}

/* 限制文本宽度 */
#wrapper h1, 
#wrapper h2 {
    max-width: 40vw; /* 📌 限制最大宽度 */
    word-wrap: break-word; /* 📌 允许长单词换行 */
}


/* 🌟 定义淡入动画 */
@keyframes fadeInWrapper {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* 4×3 方框布局 */
#container {
    display: grid;
    grid-template-columns: repeat(3, 300px);  /* 3 列，每列 300px */
    grid-template-rows: repeat(2, 300px);  /* 2 行，每行 300px */
    gap: 15px;
    padding: 20px;
    border: 2px solid #333;
    border-radius: 2rem;
}

.box {
    width: 300px;
    height: 300px;
    background-color: lightblue;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px solid #000;
    border-radius: 10px;
    font-size: 20px;
    font-weight: bold;
}

/* 右侧文本 */
#text {
    margin-left: 30px;
    padding: 20px;
    font-size: 20px;
    color: white;
    min-width: 200px;
    max-width: 90%;
}


/* 下方 数据可视化部分 */
.chart-section {
    display: flex;
    flex-direction: row; /* 📌 让子元素水平排列 */
    justify-content: flex-start; /* 📌 让 Sankey Chart 靠左 */
    align-items: center;
    width: 100%;
    height: 100vh;
    background-color: #121212;
    padding-left: 5vw; /* 📌 让图表稍微离开左侧 */
    position: relative;
}

/* 交互控件 */
/* 滑动条 - 右上角 */
/* 🌟 控制控件位置 */
#controls {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background-color: rgba(36, 36, 36, 0.6);
    padding: 8px 15px;
    border-radius: 10px;
    z-index: 10;
}

/* 滑动条样式 */
#yearRange {
    appearance: none;
    width: 100%;
    height: 5px;
    background:#ffffff;
    border-radius: 5px;
    outline: none;
    transition: 0.3s;
    cursor: pointer;
}

/* 滑动条按钮 */
#yearRange::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0px 0px 5px rgba(255, 255, 255, 0.5);
    transition: 0.3s;
}

#yearRange::-webkit-slider-thumb:hover {
    background: #ddd;
    transform: scale(1.2);
}

/* 年份文本 */
#yearLabel {
    font-size: 18px;
    color: white;
    font-weight: bold;
}

#chart-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 80vh;
    width: 100%;
}

/* 🌟 让 Sankey Chart 靠左 */
#sankeyChart {
    width: 75vw; /* 📌 限制最大宽度，防止图表过大 */
    height: 80vh;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

#yearLabel {
    font-size: 18px;
    color: white;
}

#filter {
    width: 100%;
    padding: 5px;
    margin: 10px 0;
    border-radius: 2rem;
}

#info {
    margin-top: 10px;
    font-size: 14px;
    color: #ffffff;
}

#actionButton {
    padding: 12px;
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
    transition: 0.3s;
    border-radius: 2rem;
}

#actionButton:hover {
    background-color: #0056b3;
}


#citation {
    height: 100vh;
    width: 100vw;
    background-color: #191919;
    color: #e6e6e6;
    text-align: center;
    align-content: center;
}

#introduction {
    height: 100vh;
    width: 100vw;
}

#recyclingRate {
    font-size: 3rem;
}

/* 视频 */
#bgVideo {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1; /* 让视频处于背景 */
}

#videoOverlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4); /* 半透明黑色 */
    backdrop-filter: blur(10px); /* 🌟 添加模糊效果 */
    -webkit-backdrop-filter: blur(10px); /* 兼容 Safari */
    z-index: 0;
    transition: 0.3s ease-in-out;
}


#trendAnalysis {
    margin-top: 15px;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.1); /* 半透明背景 */
    border-radius: 8px;
    text-align: left;
    font-size: 14px;
    color: #fff;
    max-width: 250px; /* 限制宽度，强制换行 */
    word-wrap: break-word;
    overflow-wrap: break-word;
}
#yearlyData {
    margin-top: 15px;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.1); /* 半透明背景 */
    border-radius: 8px;
    text-align: left;
    font-size: 14px;
    color: #fff;
    max-width: 250px; /* 限制宽度，强制换行 */
    word-wrap: break-word;
    overflow-wrap: break-word;
}

#trendAnalysis h4 {
    font-size: 16px;
    margin-bottom: 5px;
    color: #fff;
}

#trendText {
    font-size: 14px;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: 1.5; /* 增加行高，增强可读性 */
    white-space: normal; /* 允许自动换行 */
}

#filterSection {
    margin-top: 15px;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.1); /* 半透明背景 */
    border-radius: 8px;
    text-align: left;
    font-size: 14px;
    color: #fff;
    max-width: 250px; /* 限制宽度 */
}

#educationFilter,
#wasteFilter {
    width: 100%;
    padding: 5px;
    margin-top: 5px;
    font-size: 14px;
    border-radius: 5px;
    background-color: #222;
    color: white;
    border: 1px solid #555;
}

#introduction {
    height: 100vh;
    width: 100vw;
    background-color: #282828;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center /* 📌 让内容靠右对齐 */
}

/* 限制文本宽度 */
#introduction h1, 
#introduction h2, 
#introduction p {
    max-width: 40vw; /* 📌 限制文本宽度为 40% 视口宽度 */
    word-wrap: break-word; /* 📌 允许长单词换行 */
}


#introduction h1 {
    font-weight: bold;
    color: #f2f2f2;
    margin-bottom: 20px;
}

#introduction h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #cccccc;
    margin-bottom: 15px;
}

#introduction p {
    font-size: 1.2rem;
    line-height: 1.8;
    max-width: 800px;
    color: #b3b3b3;
    font-weight: 300;
}

#citation {
    width: 100vw;
    min-height: 100vh;
    background-color: #191919;
    color: #e6e6e6;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start; /* 让内容靠左 */
    padding: 60px 10vw; /* 增加左右留白 */
}

#citation {
    width: 100vw;
    min-height: 100vh;
    background-color: #191919;
    color: #e6e6e6;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start; /* 📌 让所有内容靠左对齐 */
    padding-left: 10vw; /* 📌 增加左侧间距，避免贴边 */
    padding-right: 10vw; /* 让右侧也有适当间距 */
    padding-top: 60px;
    padding-bottom: 60px;
    text-align: left; /* 📌 确保文本内容也是左对齐 */
}

/* 🌟 让标题也靠左 */
#citation h2 {
    font-size: 2.2rem;
    font-weight: bold;
    color: #f2f2f2;
    margin-bottom: 30px;
}

/* 🌟 让每个部分的标题和内容靠左 */
.citation-section {
    width: 100%; /* 让它占满整个父容器 */
    margin-bottom: 20px;
}

/* 🌟 让小标题靠左 */
.citation-section h3 {
    font-size: 1.5rem;
    color: #dcdcdc;
    margin-bottom: 10px;
}

/* 🌟 让段落靠左，并增加最大宽度 */
#citation p {
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 800px;
    color: #d0d0d0;
    margin-bottom: 10px;
}

/* 🌟 超链接样式 */
#citation a {
    color: #1e90ff;
    text-decoration: none;
    transition: color 0.3s ease-in-out;
}

#citation a:hover {
    color: #ffffff;
}

/* 🌟 让列表也靠左 */
#citation ul {
    list-style-type: none;
    padding: 0;
}

#citation li {
    font-size: 1.1rem;
    color: #d0d0d0;
    margin-bottom: 5px;
}

.download-btn {
    padding: 10px 20px;
    background-color: #155eb2;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.download-btn:hover {
    background-color: #1034a0;
}

/* 介绍部分的布局 */
.introduction {
    display: flex;
    gap: 3rem;
    align-items: center;
    margin: 2rem 0; /* 移除左右边距 */
    padding: 0 8%; /* 添加整体内边距 */
    width: 100%;
    height: 100vh;
    min-height: 60vh;
}


/* 图片样式 */
.intro-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

/* 文字部分样式 */
.intro-text {
    width: 80%;  /* 从之前的值改为更大的比例 */
    max-width: 800px;  /* 可以适当增加最大宽度 */
    margin: 0;
    padding-left: 0;
    text-align: left;
    align-items: center;
}

#videoContainer {
    flex: 0 0 60%; /* 占据 40% 的宽度 */
    aspect-ratio: 2/1; /* 确保视频比例适当 */
    margin: 20;
    gap: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
}

.intro-video {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 确保视频填充整个容器 */
    display: block;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

#circleContainer {
    display: flex;
    justify-content: center; /* 居中排列 */
    gap: 12px; /* 圆之间的间距 */
    margin-top: 10px; /* 与其他控件的间距 */
    margin-top: 15px;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.1); /* 半透明背景 */
    border-radius: 8px;
    text-align: left;
    font-size: 14px;
    color: #fff;
    max-width: 250px; /* 限制宽度，强制换行 */
    word-wrap: break-word;
    overflow-wrap: break-word;
}

#circle1 {
    width: 20px; /* 圆的大小 */
    height: 20px;
    background-color: rgba(128, 0, 128, 0.252); /* 设定紫色 */
    border-radius: 50%; /* 变成圆形 */
}
#circle2 {
    width: 20px; /* 圆的大小 */
    height: 20px;
    background-color: rgba(128, 0, 128, 0.395); /* 设定紫色 */
    border-radius: 50%; /* 变成圆形 */
}
#circle3 {
    width: 20px; /* 圆的大小 */
    height: 20px;
    background-color: rgba(128, 0, 128, 0.536); /* 设定紫色 */
    border-radius: 50%; /* 变成圆形 */
}
#circle4 {
    width: 20px; /* 圆的大小 */
    height: 20px;
    background-color: rgba(128, 0, 128, 0.722); /* 设定紫色 */
    border-radius: 50%; /* 变成圆形 */
}
#circle5 {
    width: 20px; /* 圆的大小 */
    height: 20px;
    background-color: rgba(151, 13, 151, 0.774); /* 设定紫色 */
    border-radius: 50%; /* 变成圆形 */
}
#circle6 {
    width: 20px; /* 圆的大小 */
    height: 20px;
    background-color: rgb(215, 11, 215); /* 设定紫色 */
    border-radius: 50%; /* 变成圆形 */
}