* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    
    body {
        font-family: Arial, sans-serif;
        line-height: 1.6;
        color: #333;
        background-color: #f8f9fa;
    }
    
    .top-nav-container {
        max-width: 1200px;
        margin: 0 auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 20px;
    }
    
    .nav-menu {
        display: flex;
        list-style: none;
    }
    
    .nav-menu li {
        position: relative;
        margin-right: 20px;
    }
    
    .nav-menu a {
        color: white;
        text-decoration: none;
        font-weight: bold;
        padding: 10px 0;
        display: block;
    }
    
    .nav-menu a:after {
        content: " ▼";
        font-size: 10px;
        vertical-align: middle;
    }
    
    .action-buttons {
        display: flex;
        gap: 10px;
    }
    
    .btn {
        background-color: #d4e157;
        color: #002855;
        border: none;
        padding: 10px 15px;
        border-radius: 5px;
        font-weight: bold;
        cursor: pointer;
        text-decoration: none;
        display: inline-block;
    }
    
    .main-content {
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
        display: flex;
    }
    
    .content-area {
        flex: 1;
        padding-right: 30px;
    }
    
    .intro-text {
        background-color: white;
        padding: 20px;
        margin-bottom: 30px;
        border-radius: 5px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    
    .intro-text p {
        margin-bottom: 15px;
    }
    
    .highlight {
        font-weight: bold;
    }
    
    .divider {
        height: 2px;
        background-color: #e5e5e5;
        margin: 30px 0;
    }
    
    .main-heading {
        text-align: center;
        font-size: 28px;
        margin: 20px 0 30px;
        color: #002855;
        text-transform: uppercase;
    }
    
    .charts-container {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        margin-bottom: 30px;
    }
    
    .chart {
        flex: 1;
        min-width: 300px;
        background-color: white;
        padding: 15px;
        border-radius: 5px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    
    .chart-title {
        font-size: 14px;
        color: #666;
        margin-bottom: 10px;
    }
    
    .chart-image {
        width: 100%;
        height: 200px;
        background-color: #f0f0f0;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .sidebar {
        width: 300px;
        position: sticky;
        top: 20px;
        align-self: flex-start;
        background-color: #fff;
        border-radius: 5px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        padding: 0;
        overflow: hidden;
    }
    
    .sidebar-title {
        background-color: #f5f5f5;
        padding: 10px 15px;
        font-size: 18px;
        font-weight: bold;
        border-bottom: 1px solid #e5e5e5;
    }
    
    .nav-list {
        list-style: none;
        padding: 15px;
    }
    
    .nav-item {
        margin-bottom: 10px;
        border-bottom: 1px solid #f0f0f0;
        padding-bottom: 10px;
    }
    
    .nav-item:last-child {
        border-bottom: none;
        margin-bottom: 0;
    }
    
    .nav-link {
        display: flex;
        text-decoration: none;
        color: #0056b3;
        transition: color 0.3s;
    }
    
    .nav-link:hover {
        color: #003d7a;
    }
    
    .nav-number {
        min-width: 25px;
        font-weight: bold;
    }
    
    .section {
        margin-bottom: 40px;
        padding: 20px;
        background-color: #fff;
        border-radius: 5px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    
    .section-title {
        font-size: 20px;
        margin-bottom: 20px;
        color: #002855;
        border-bottom: 2px solid #e5e5e5;
        padding-bottom: 10px;
    }
    
    .progress-container {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        position: relative;
        margin: 40px 0;
    }
    
    .progress-line {
        position: absolute;
        top: 50%;
        left: 0;
        width: 100%;
        height: 4px;
        background-color: #ccc;
        z-index: 1;
    }
    
    .progress-item {
        width: 25%;
        text-align: center;
        position: relative;
        z-index: 2;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .progress-dot {
        width: 20px;
        height: 20px;
        border-radius: 50%;
        background-color: #ccc;
        margin-bottom: 8px;
        position: relative;
        z-index: 2;
    }
    
    .progress-item.active .progress-dot {
        background-color: #0099ff;
    }
    
    .progress-text {
        color: #333;
    }
    
    .progress-item.active .progress-text {
        color: #0099ff;
    }
    
    .start-arrow {
        position: absolute;
        top: 50%;
        left: -15px; 
        transform: translateY(-50%);
        width: 10px;
        height: 10px;
        border-top: 2px solid #0099ff;
        border-right: 2px solid #0099ff;
        transform: rotate(45deg);
        z-index: 3;
    }
    
    table {
        width: 100%;
        border-collapse: collapse;
        text-align: center;
    }
    
    table, th, td {
        border: 1px solid #000;
    }
    
    th, td {
        padding: 8px;
    }
    
    .title {
        background-color: #f2f2f2;
    }
    
    .note {
        background-color: #ffe6cc;
    }
    
    @media (max-width: 768px) {
        .main-content {
            flex-direction: column;
        }
        
        .content-area {
            padding-right: 0;
            margin-bottom: 30px;
        }
        
        .sidebar {
            width: 100%;
            position: static;
        }
        
        .charts-container {
            flex-direction: column;
        }
        
        .chart {
            min-width: 100%;
        }
        
        .top-nav-container {
            flex-direction: column;
            align-items: flex-start;
        }
        
        .nav-menu {
            margin-bottom: 15px;
        }
        
        .action-buttons {
            width: 100%;
            justify-content: space-between;
        }
    }

       body{
            font-family: Arial, sans-serif;
            background-color: #001f3f;
            color: #ffff00;
            margin: 0;
            padding: 20px;
        } 
		
        h1 {
            text-align: center;
            margin-bottom: 20px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .regions {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }
        .region {
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 15px;
        }
        .region h2 {
            font-size: 18px;
            margin-top: 0;
            margin-bottom: 10px;
            border-bottom: 1px solid #ffff00;
            padding-bottom: 5px;
        }
        .countries {
            columns: 2;
            padding: 0;
        }
        .countries li {
            list-style: none;
            margin-bottom: 1px;
        }
        .countries a {
            color: #000000;
            text-decoration: none;
            display: block;
            padding: 5px;
            border-radius: 4px;
            transition: background-color 0.3s;
        }
        .countries a:hover {
            background-color: rgba(255, 255, 0, 0.2);
            cursor: pointer;
        }
        /* 响应式布局 */
        @media (max-width: 768px) {
            .regions {
                grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            }
        }