body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 50px;
}

h1 {
    color: #4CAF50;
}

p {
    font-size: 18px;
    color: #555;
}

#svgContainer {
    margin: 20px auto;
    display: inline-block;
    width: 100%;
    max-width: auto;
}

.map-container {
    display: flex;
    gap: 20px;
    overflow: auto; /* 添加滚动条 */
}

.tooltip {
    position: fixed;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    padding: 10px;
    border-radius: 4px;
    font-size: 14px;
    pointer-events: none;
    z-index: 1000;
    display: none;
    border: 1px solid rgba(255, 255, 255, 0.2); 
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);  
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    margin: 10px;
    transition: background-color 0.3s, transform 0.2s;
}

#usaMap {
    width: 60%;
    min-height: 400px;
    border: 1px solid #ddd;
    overflow-y: scroll;
    overflow-x: scroll;
    object-fit: contain; /* 保持 SVG 比例缩放 */
}

#stateInfo {
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #fff;
    display: none;
    width: 400px;
    height: fit-content;
}