.sign-container{
    box-sizing: border-box;
    width: 1100px;
    margin: 20px auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.header {
    background: #eee;
    color: #666;
    padding: 25px 30px;
    text-align: center;
}
.header h1 {
    font-size: 28px;
    margin-bottom: 10px;
}
.header p {
    font-size: 16px;
    opacity: 0.9;
}
.form-content {
    padding: 30px;
}
.section {
    margin-top: 30px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}
.section-title {
    font-size: 16px;
    color: #1a237e;
    margin-bottom: 20px;
    padding-left: 10px;
    border-left: 4px solid #1a237e;
}
.form-row {
    display: flex;
    margin-bottom: 20px;
}
.form-group {
    flex: 1;
    padding: 0 15px;
}
label {
    display: block;
    margin-bottom: 8px;
    color: #333;
}
.required::after {
    content: "*";
    color: #e53935;
    margin-left: 4px;
}
input[type="text"],
input[type="email"],
input[type="tel"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 15px;
    transition: border-color 0.3s;
}
input:focus {
    border-color: #2196f3;
    outline: none;
    box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.2);
}
.radio-group {
    display: flex;
    gap: 20px;
}
.radio-group label {
    display: flex;
    align-items: center;
    font-weight: normal;
    cursor: pointer;
}
.radio-group input {
    margin-right: 8px;
}
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 10px;
}
.forum-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    border: 1px solid #eee;
    border-radius: 6px;
    transition: background-color 0.3s;
}
.forum-item:hover {
    background-color: #f9f9f9;
}
.forum-date {
    margin-left: auto;
    color: #666;
    font-size: 14px;
    background: #f5f5f5;
    padding: 4px 10px;
    border-radius: 12px;
}
.yesno-group {
    display: flex;
    gap: 20px;
    margin: 10px 0;
}
.additional-input {
    margin-top: 15px;
    margin-left: 25px;
    animation: fadeIn 0.5s ease;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}
.contact-info {
    background: #f5f7ff;
    padding: 20px;
    border-radius: 8px;
    margin-top: 30px;
}
.contact-info h3 {
    margin-bottom: 15px;
    color: #1a237e;
}
.contact-info p {
    margin-bottom: 8px;
    color: #555;
    display: flex;
    align-items: center;
}
.contact-info i {
    margin-right: 10px;
    color: #2196f3;
}
.submit-btn {
    background: linear-gradient(135deg, #dea7c4 0%, #f9e270 100%);
    color: white;
    padding: 14px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    display: block;
    width: 200px;
    margin: 30px auto 0;
    border: none;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}
.submit-btn:hover {
    transform: translateY(-2px);
    color: white;
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.4);
}
.error {
    color: #e53935;
    font-size: 13px;
    margin-top: 5px;
    display: flex;
    align-items: center;
}
.error i {
    margin-right: 5px;
}
.forum-error {
    background: #ffebee;
    padding: 10px 15px;
    border-radius: 6px;
    margin-top: 10px;
    color: #e53935;
    display: flex;
    align-items: center;
}
.forum-error i {
    margin-right: 10px;
}
.success-message {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #4caf50;
    color: white;
    padding: 15px 20px;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    animation: slideIn 0.5s ease;
}
@keyframes slideIn {
    from { transform: translateX(100px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}
@media screen and (max-width: 768px) {
    .sign-container {
        width: 100%;
        background: white;
        border-radius: 12px;
        overflow: hidden;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    }
    .form-row {
        flex-direction: column; /* 在更小屏幕上保持垂直排列 */
        gap: 15px;
    }

    .form-group {
        display: flex;
        flex-direction: row; /* 改为水平排列 */
        align-items: center; /* 垂直居中 */
        gap: 10px; /* 元素之间的间距 */
        width: 100%;
    }
    .form-group label {
        flex-shrink: 0; /* 防止标签被压缩 */
        width: 80px; /* 固定标签宽度，可根据需要调整 */
        text-align: left; /* 标签左对齐 */
    }

    .form-group .el-input {
        flex-grow: 1; /* 输入框占据剩余空间 */
    }

    .form-group .radio-group,
    .form-group .yesno-group {
        display: flex;
        flex-direction: row;
        gap: 15px;
        flex-wrap: wrap;
    }
    .contact-info{
        width: 90%;
    }
}