/* 基础布局 */
body {
    font-family: "Segoe UI", "Noto Sans SC", sans-serif;
    background: #f5f7fa;
    margin: 0;
    padding: 0;
    color: #333;
}

.container {
    max-width: 700px;
    margin: auto;
    padding: 30px 20px;
}

/* 标题与副标题 */
h1 {
    text-align: center;
    color: #2c3e50;
    font-size: 32px;
    margin-bottom: 10px;
}

.subtitle {
    text-align: center;
    color: #888;
    font-size: 16px;
    margin-bottom: 30px;
}

h2 {
    color: #34495e;
    margin-top: 0;
}

/* 卡片样式 */
.card {
    background: #ffffff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    margin-bottom: 30px;
}

/* 表单组件 */
label {
    font-weight: 600;
    display: block;
    margin-top: 15px;
    margin-bottom: 6px;
    color: #555;
}

input {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    border-radius: 6px;
    border: 1px solid #ccc;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

input:focus {
    border-color: #4caf50;
    outline: none;
}

/* 按钮 */
button {
    margin-top: 20px;
    width: 100%;
    background-color: #4caf50;
    color: white;
    padding: 14px;
    font-size: 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #43a047;
}

/* 结果区域 */
.result-box {
    margin-top: 20px;
    font-size: 16px;
    line-height: 1.5;
    background: #f1f8e9;
    padding: 12px;
    border-left: 5px solid #81c784;
    border-radius: 6px;
    word-break: break-word;
}

/* 响应式支持 */
@media (max-width: 600px) {
    .container {
        padding: 20px 12px;
    }

    input,
    button {
        font-size: 15px;
    }
}