.contact-main {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
    min-height: 60vh;
}

.page-title {
    text-align: center;
    margin-bottom: 40px;
}
.page-title h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 10px;
}
.page-title p {
    color: #666;
    font-size: 16px;
}

/* 容器布局：左右分栏 */
.contact-container {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

/* 左侧：联系信息 */
.contact-info {
    flex: 1;
    min-width: 300px;
    background: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
}
.info-item {
    margin-bottom: 25px;
    display: flex;
    align-items: flex-start;
}
.info-icon {
    font-size: 24px;
    margin-right: 15px;
    color: #0056b3;
    width: 30px;
    text-align: center;
}
.info-content h4 {
    margin: 0 0 5px 0;
    color: #333;
    font-size: 18px;
}
.info-content p {
    margin: 0;
    color: #666;
    line-height: 1.5;
}

/* 右侧：表单 */
.contact-form-wrapper {
    flex: 1.5;
    min-width: 300px;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 600;
}
.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    box-sizing: border-box; /* 关键：防止padding撑大宽度 */
    transition: border-color 0.3s;
}
.form-control:focus {
    border-color: #0056b3;
    outline: none;
}
textarea.form-control {
    resize: vertical;
    min-height: 150px;
}

/* 错误提示样式 */
.text-danger {
    color: #dc3545;
    font-size: 14px;
    margin-top: 5px;
}
.is-invalid {
    border-color: #dc3545;
}

/* 提交按钮 */
.btn-submit {
    background-color: #0056b3;
    color: white;
    border: none;
    padding: 12px 30px;
    font-size: 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}
.btn-submit:hover {
    background-color: #004494;
}

/* 成功消息 */
.alert-success {
    background-color: #d4edda;
    color: #155724;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
    border: 1px solid #c3e6cb;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .contact-container {
        flex-direction: column;
        padding: 20px;
    }
}