/* 页面标题样式 */
.page-header {
    text-align: center;
    padding: 4rem 0;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 业务领域概览样式 */
.business-overview {
    padding: 4rem 5%;
    background: white;
}

.overview-content {
    max-width: 1200px;
    margin: 0 auto;
}

.overview-content h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--text-color);
    margin-bottom: 3rem;
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.overview-item {
    text-align: center;
    padding: 2rem;
    background: var(--background-color);
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.overview-item:hover {
    transform: translateY(-5px);
}

.overview-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
}

.overview-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.overview-item:hover .overview-icon img {
    transform: scale(1.1);
}

.overview-item h4 {
    font-size: 1.3rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.overview-item p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

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

.overview-list li {
    color: var(--text-light);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.overview-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
}

/* 服务流程样式 */
.service-process {
    padding: 4rem 5%;
}

.process-content {
    max-width: 1200px;
    margin: 0 auto;
}

.process-content h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--text-color);
    margin-bottom: 3rem;
}

.process-timeline {
    position: relative;
    padding: 2rem 0;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--border-color);
}

.timeline-item {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: bold;
    position: relative;
    z-index: 1;
}

.timeline-content {
    width: calc(50% - 50px);
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
}

.timeline-content h4 {
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.timeline-content p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.timeline-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.timeline-list li {
    color: var(--text-light);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.timeline-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
}

/* 技术优势样式 */
.tech-advantages {
    padding: 4rem 5%;
    background: white;
}

.advantages-content {
    max-width: 1200px;
    margin: 0 auto;
}

.advantages-content h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--text-color);
    margin-bottom: 3rem;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
    background: var(--background-color);
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
}

.advantage-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.advantage-item h4 {
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.advantage-item p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

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

.advantage-list li {
    color: var(--text-light);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.advantage-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
}

/* 合作模式样式 */
.cooperation-mode {
    padding: 4rem 5%;
}

.mode-content {
    max-width: 1200px;
    margin: 0 auto;
}

.mode-content h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--text-color);
    margin-bottom: 3rem;
}

.mode-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.mode-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.mode-item:hover {
    transform: translateY(-5px);
}

.mode-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
}

.mode-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.mode-item:hover .mode-icon img {
    transform: scale(1.1);
}

.mode-item h4 {
    font-size: 1.3rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.mode-item p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 服务保障样式 */
.service-guarantee {
    padding: 4rem 5%;
    background: white;
}

.guarantee-content {
    max-width: 1200px;
    margin: 0 auto;
}

.guarantee-content h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--text-color);
    margin-bottom: 3rem;
}

.guarantee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.guarantee-item {
    text-align: center;
    padding: 2rem;
    background: var(--background-color);
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.guarantee-item:hover {
    transform: translateY(-5px);
}

.guarantee-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
}

.guarantee-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.guarantee-item h4 {
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.guarantee-item p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 合作咨询样式 */
.contact-section {
    padding: 4rem 5%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-content h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-content > p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.contact-form {
    display: grid;
    gap: 1.5rem;
    max-width: 600px;
    margin: 0 auto;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.2);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

.submit-btn {
    padding: 1rem 2rem;
    background: white;
    color: var(--primary-color);
    border: none;
    border-radius: 30px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .timeline-item {
        flex-direction: column;
        align-items: center;
    }

    .timeline-content {
        width: 100%;
        margin-top: 1rem;
    }

    .process-timeline::before {
        left: 25px;
    }
}

@media (max-width: 768px) {
    .overview-grid,
    .advantages-grid,
    .mode-grid,
    .guarantee-grid {
        grid-template-columns: 1fr;
    }

    .page-header h2 {
        font-size: 2rem;
    }

    .overview-content h3,
    .process-content h3,
    .advantages-content h3,
    .mode-content h3,
    .guarantee-content h3 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .contact-form {
        padding: 0 1rem;
    }

    .submit-btn {
        width: 100%;
    }
}