body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    margin: 0;
    padding: 20px;
}
.container {
    max-width: 600px;
    margin: auto;
    background: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
h1 {
    text-align: center;
    color: #333;
}
h3 {
    color: #444;
    border-bottom: 1px solid #eee;
    padding-bottom: 5px;
    margin-top: 20px;
}
.subtitle {
    text-align: center;
    font-size: 0.9em;
    color: #666;
    margin-bottom: 20px;
}
.section {
    margin: 20px 0;
}
input[type="text"] {
    padding: 8px;
    width: 100%;
    font-size: 16px;
    margin-bottom: 12px;
    box-sizing: border-box;
}
button {
    padding: 8px 16px;
    font-size: 16px;
    background-color: #3498db;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 4px;
    margin-right: 12px;
    box-sizing: border-box;
}
button:hover {
    background-color: #2980b9;
}
.result p {
    margin: 8px 0;
    font-size: 1.1em;
    color: #333;
    word-break: break-word;
}

/* 响应式适配 */
@media (max-width: 600px) {
    input[type="text"] {
        width: 100% !important;
        margin-bottom: 12px;
    }
    button {
        width: 100%;
        margin-right: 0;
        margin-top: 8px;
        display: block;
    }
}