.container {
    width: 100%;
    /* PC端最大宽度 */
    margin: 20px auto;
    padding: 40px 20px;
    box-sizing: border-box;
    background: linear-gradient(to right, #a1c4fd, #c2e9fb);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 标题 */
.container h2 {
    text-align: center;
    margin-bottom: 20px;
}

/* 小标题 */
.section-title {
    margin-top: 20px;
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 10px;
    border-bottom: 1px solid #ccc;
    padding-bottom: 5px;
}

/* 表单整体布局 */
.container form {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

/* 每个表单项 */
.form-group {
    display: flex;
    flex-wrap: wrap;
    /* 允许换行以适配移动端 */
    margin-bottom: 15px;
}

.form-group label {
    flex: 0 0 185px;
    /* 左侧标签宽度 */
    padding: 5px 0;
}

.form-group input[type="text"],
.form-group input[type="date"],
.form-group input[type="email"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    min-width: 335px;
    box-sizing: border-box;
    width: 100%;
    flex: 1;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    resize: none;
    outline: none;
}

.form-group textarea::-webkit-scrollbar {
    width: 0;
}

/* 单选按钮 */
.form-group input[type="radio"] {
    margin-right: 5px;
}

/* 在同一行的性别、婚姻状态等可用一行展示 */
.form-group.gender,
.form-group.marital {
    display: flex;
    align-items: flex-start;
}

/* 提交按钮 */
.submit-btn {
    display: block;
    margin: 0 auto;
    padding: 12px 24px;
    background-color: #3498db;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
}

.submit-btn:hover {
    background-color: #2980b9;
}

.intl-tel-input {
    width: calc(100% - 185px);
}

/* 自适应移动端：当屏幕宽度小于600px时，每个表单项纵向排布 */
@media (max-width: 700px) {
    .intl-tel-input {
        width: 100%;
    }

    .form-group {
        flex-direction: column;
    }

    .form-group label {
        flex: none;
        margin-bottom: 5px;
    }

    .form-group input[type="text"],
    .form-group input[type="date"],
    .form-group input[type="email"],
    .form-group input[type="file"],
    .form-group select,
    .form-group textarea {
        box-sizing: border-box;
        width: 100%;
        resize: none;
        outline: none;
    }

    .form-group textarea::-webkit-scrollbar {
        width: 0;
    }
}