* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", sans-serif;
}

body {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    transition: background-image 0.5s ease;
    background-color: rgba(0,0,0,0.3);
    background-blend-mode: multiply;
}

/* 顶部导航栏 */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color:rgba(255,255,255,0.2);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border-bottom:1px solid rgba(255,255,255,0.1);
    height: 70px;
    color: #fff;
    padding: 0 40px;

    /* 关键：让导航栏整体层级最高 */
    position: relative;
    z-index: 99999;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li a {
    color: #fff;
    text-decoration: none;
    padding: 0 20px;
    font-size: 16px;
}

.nav-menu li a.active {
    color: #4CAF50;
}

.user a {
    color: #fff;
    text-decoration: none;
    margin-left: 20px;
}

/* 用户下拉菜单 */
.user-dropdown {
    position: relative;
    display: inline-block;
    z-index: 99999;
}

.user-btn {
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    padding: 8px 12px;
}

/* 下拉菜单：绝对在最上层，不会被图表挡住 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: #ffffff;
    min-width: 160px;
    border-radius: 8px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
    display: none;
    z-index: 999999 !important;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.1);
}

/* 下拉显示 */
.user-dropdown.active .dropdown-menu {
    display: block;
}

/* 下拉选项样式 */
.dropdown-menu a {
    display: block;
    padding: 12px 18px;
    color: #333333;
    text-decoration: none;
    font-size: 15px;
    transition: all 0.2s ease;
}

.collect-item {
    border-bottom: 1px solid #f0f0f0;
    font-weight: 500;
}

.collect-item:hover {
    background-color: #f5faf5;
    color: #2e7d32;
}

.logout-item {
    color: #d32f2f !important;
    font-weight: 600;
    background-color: #fff8f8;
}

.logout-item:hover {
    background-color: #ffebee !important;
    color: #c62828 !important;
}

/* 底部联系栏 */
.bottom-contact {
    background-color:rgba(255,255,255,0.2);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border-bottom:1px solid rgba(255,255,255,0.1);
    color: white;
    text-align: center;
    padding: 10px;
    font-size: 14px;
}

/* 主内容区 */
.main-container {
    display: flex;
    min-height: calc(100vh - 120px);
    padding: 20px;
    gap: 20px;
    position: relative;
    z-index: 1;
}

/* 左侧介绍区 */
.left-panel {
    width: 25%;
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top:20px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 8px;
    background-color: transparent;
    cursor: pointer;
    position: relative;
}

.icon-circle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.name-group {
    display: flex;
    flex-direction: column;
    color: white;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
}

.cn-name {
    font-size: 18px;
    font-weight: bold;
}

.en-name {
    font-size: 14px;
    opacity: 0.9;
}

.info-tooltip {
    position: absolute;
    left: 100%;
    top: 0;
    width: 300px;
    padding: 15px;
    background-color: #f0f0f0;
    color: black;
    border: 1px solid #ccc;
    border-radius: 4px;
    display: none;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.info-item:hover .info-tooltip {
    display: block;
}

/* 中间图片展示区 */
.center-panel {
    width: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.main-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border: 2px solid white;
    border-radius: 8px;
}

.image-slider {
    display: flex;
    gap: 10px;
}

.slider-item {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border: 2px solid white;
    border-radius: 4px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.3s;
}

.slider-item.active, .slider-item:hover {
    opacity: 1;
    border-color: #004d26;
}

/* 右侧数据分析区 */
.right-panel {
    width: 25%;
    display: flex;
    flex-direction: column;
    gap: 30px;
    position: relative;
    z-index: 1;
}

.chart-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
    z-index: 1;
}

.chart {
    width: 100%;
    height: 200px;
    background-color: transparent;
    border-radius: 8px;
    position: relative;
    z-index: 1;
}

.chart canvas {
    width: 100% !important;
    height: 100% !important;
    position: relative;
    z-index: 1 !important;
}

.chart-desc {
    text-align: center;
    color: white;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
    font-size: 14px;
}