/* 页面标题区 */
.page-header {
    background-size: cover;
    background-position: center;
    padding: 180px 0 100px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 0;
}

.page-header .container {
    position: relative;
    z-index: 1;
    min-height: 400px;
}

.page-header .banner-text {
    text-align: left;
    margin-bottom: 40px;
    max-width: 900px;
    margin: 0 auto 40px auto;
}

.page-header h1 {
    font-size: 72px;
    margin-bottom: 20px;
    font-weight: bold;
    line-height: 1.2;
    color: #000;
    text-align: left;
}

.page-header .highlight-title {
    color: #007bff;
}

.page-header .sub-heading {
    font-size: 36px;
    color: #000;
    margin-bottom: 10px;
    font-weight: 500;
    text-align: left;
}

.page-header .highlight-blue {
    color: #1890ff;
}

.page-header .description-text {
    font-size: 20px;
    color: #000;
    line-height: 1.6;
    margin-top: 20px;
    margin-bottom: 30px;
    max-width: 800px;
    text-align: left;
}

.page-header .btn-primary {
    display: inline-block;
    background-color: #1890ff;
    color: #fff;
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-size: 18px;
    transition: background-color 0.3s ease;
    margin-top: 30px;
    margin-bottom: 40px;
}

.page-header .btn-primary:hover {
    background-color: #096dd9;
}

.page-header .banner-bottom-text {
    position: absolute;
    bottom: 40px;
    right: 20px;
    left: auto;
    transform: none;
    color: #ccc;
    font-size: 16px;
    opacity: 0.8;
    text-align: right;
    white-space: nowrap;
}

/* 技术支持内容 */
.support-content {
    padding: 80px 0;
    background: #fff;
}

.support-section {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 80px;
}

.support-section:last-child {
    margin-bottom: 0;
}

.support-section.reverse {
    flex-direction: row-reverse;
}

.section-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.section-image img {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.section-text {
    flex: 1;
    padding-right: 40px;
}

.support-section.reverse .section-text {
    padding-right: 0;
    padding-left: 40px;
}

.section-text h2 {
    font-size: 36px;
    color: #333;
    margin-bottom: 10px;
    text-align: center;
}

.section-subheading {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
    text-align: center;
    display: block;
}

.section-text p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 30px;
    text-align: left;
}

.feature-list {
    list-style: none;
    padding: 0;
    text-align: left;
}

.feature-list li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    color: #666;
    text-align: left;
}

.feature-list i {
    color: #28a745;
    margin-right: 10px;
    font-size: 18px;
}

/* 技术支持服务 */
.support-services {
    padding: 80px 0;
    background: #f8f9fa;
}

.support-services h2 {
    text-align: center;
    font-size: 36px;
    color: #333;
    margin-bottom: 50px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.service-item {
    background: #fff;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border-radius: 50%;
}

.service-icon i {
    font-size: 36px;
    color: #007bff;
}

.service-item h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 15px;
}

.service-item p {
    color: #666;
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .page-header {
        padding: 150px 0 80px;
    }
    .page-header h1 {
        font-size: 60px;
    }
    .page-header .sub-heading {
        font-size: 30px;
    }
    .page-header .description-text {
        font-size: 18px;
        max-width: 700px;
    }
}

@media (max-width: 992px) {
    .support-section {
        flex-direction: column;
        gap: 40px;
    }

    .support-section.reverse {
        flex-direction: column;
    }

    .section-image {
        order: -1;
    }

    .section-image img {
        max-width: 100%;
    }
    .page-header {
        padding: 120px 0 60px;
    }
    .page-header h1 {
        font-size: 48px;
    }
    .page-header .sub-heading {
        font-size: 24px;
    }
    .page-header .description-text {
        font-size: 16px;
        max-width: 600px;
    }
    .page-header .banner-bottom-text {
        position: static;
        margin-top: 30px;
        text-align: center;
        white-space: normal;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 100px 0 50px;
    }
    .page-header h1 {
        font-size: 36px;
    }
    .page-header .sub-heading {
        font-size: 20px;
    }
    .page-header .description-text {
        font-size: 14px;
        max-width: 90%;
    }
    .page-header .btn-primary {
        padding: 10px 25px;
        font-size: 16px;
    }
    .section-text h2,
    .support-services h2 {
        font-size: 28px;
    }
    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .page-header {
        padding: 80px 0 40px;
    }
    .page-header h1 {
        font-size: 28px;
    }
    .page-header .sub-heading {
        font-size: 18px;
    }
    .page-header .description-text {
        font-size: 12px;
    }
    .service-item {
        padding: 20px;
    }
}

/* 联系表单样式 */
.contact-form {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: #1890ff;
    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
    outline: none;
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.form-privacy {
    margin: 24px 0;
    padding: 16px;
    background: #f5f7fa;
    border-radius: 6px;
}

.form-privacy p {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.modal-content {
    position: relative;
    background: #fff;
    margin: 15% auto;
    padding: 30px;
    width: 90%;
    max-width: 500px;
    border-radius: 12px;
    text-align: center;
}

.close {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 24px;
    cursor: pointer;
    color: #666;
}

.close:hover {
    color: #333;
}

.modal-content h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 16px;
}

.modal-content p {
    color: #666;
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .contact-form {
        padding: 20px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 14px;
    }

    .modal-content {
        margin: 30% auto;
        padding: 20px;
    }
}

.contact-input-group {
    display: flex;
    gap: 10px;
}

.contact-input-group select {
    width: 120px;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    background-color: #fff;
    cursor: pointer;
}

.contact-input-group input {
    flex: 1;
}

.error-message {
    color: #ff4d4f;
    font-size: 14px;
    margin-top: 4px;
    display: none;
}

.error-message.show {
    display: block;
}

@media (max-width: 768px) {
    .contact-input-group {
        flex-direction: column;
        gap: 8px;
    }
    
    .contact-input-group select {
        width: 100%;
    }
}