/* ========== AI应用开发业务介绍页面专属样式 ========== */

/* Banner区域 */
.ai-dev-banner {
    padding: 4rem 0 3rem;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    position: relative;
    overflow: hidden;
}

.ai-dev-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(37,99,235,0.15), transparent);
    border-radius: 50%;
}

.banner-breadcrumb {
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: var(--gray);
}

.banner-breadcrumb a {
    color: var(--gray);
    text-decoration: none;
}

.banner-breadcrumb a:hover {
    color: var(--secondary);
}

.banner-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.banner-desc {
    font-size: 1.125rem;
    color: var(--gray);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.banner-desc .highlight {
    color: var(--secondary);
}

.banner-stats {
    display: flex;
    gap: 3rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--secondary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray);
}

.banner-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* 为什么选择AI */
.why-ai {
    padding: 5rem 0;
    background: var(--dark);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.why-card {
    background: var(--dark-light);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: all 0.3s;
}

.why-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.why-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.why-card h3 {
    margin-bottom: 1rem;
}

.why-card p {
    color: var(--gray);
    font-size: 0.9rem;
}

/* 核心服务区域 */
.core-services {
    padding: 5rem 0;
    background: var(--dark-light);
}

.service-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
    padding: 2rem;
    background: var(--dark);
    border-radius: 1.5rem;
    border: 1px solid rgba(37,99,235,0.1);
}

.service-block.reverse {
    direction: rtl;
}

.service-block.reverse .service-content,
.service-block.reverse .service-visual {
    direction: ltr;
}

.service-badge {
    display: inline-block;
    background: rgba(37,99,235,0.15);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--secondary);
    margin-bottom: 1rem;
}

.service-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.service-desc {
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.feature-item {
    padding-left: 0.5rem;
}

.feature-item strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--white);
}

.feature-item span {
    font-size: 0.85rem;
    color: var(--gray);
}

.service-tech {
    background: rgba(37,99,235,0.05);
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.8rem;
    color: var(--secondary);
}

/* 可视化演示区域 */
.agent-demo {
    background: #0a0e17;
    border-radius: 1rem;
    padding: 1.5rem;
}

.agent-message {
    padding: 0.75rem 1rem;
    border-radius: 1rem;
    margin-bottom: 1rem;
    max-width: 90%;
}

.agent-message.user {
    background: rgba(37,99,235,0.2);
    margin-left: auto;
    text-align: right;
}

.agent-message.ai {
    background: rgba(6,182,212,0.1);
    border-left: 3px solid var(--secondary);
}

.knowledge-demo {
    background: #0a0e17;
    border-radius: 1rem;
    padding: 1.5rem;
}

.doc-list {
    margin-bottom: 1rem;
}

.doc-item {
    padding: 0.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 0.85rem;
}

.search-box {
    display: flex;
    gap: 0.5rem;
}

.search-box input {
    flex: 1;
    padding: 0.75rem;
    background: var(--dark-light);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 0.5rem;
    color: var(--white);
}

.doc-compare {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #0a0e17;
    border-radius: 1rem;
    padding: 1.5rem;
}

.doc-column {
    flex: 1;
    background: var(--dark-light);
    padding: 1rem;
    border-radius: 0.5rem;
}

.doc-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.diff-highlight {
    background: rgba(34,197,94,0.2);
    color: #4ade80;
    padding: 0.125rem 0.25rem;
    border-radius: 0.25rem;
}

.diff-warning {
    background: rgba(239,68,68,0.2);
    color: #f87171;
    padding: 0.125rem 0.25rem;
    border-radius: 0.25rem;
}

.vs {
    font-weight: 700;
    color: var(--secondary);
}

.sql-demo {
    background: #0a0e17;
    border-radius: 1rem;
    padding: 1.5rem;
}

.nl-input {
    background: rgba(37,99,235,0.15);
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.sql-output {
    background: var(--dark-light);
    padding: 1rem;
    border-radius: 0.5rem;
    font-family: 'Monaco', monospace;
    font-size: 0.7rem;
    color: #98c379;
}

/* 开发流程时间线 */
.dev-process {
    padding: 5rem 0;
    background: var(--dark);
}

.process-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 27px;
    top: 50px;
    bottom: -30px;
    width: 2px;
    background: rgba(37,99,235,0.3);
}

.timeline-item:last-child::before {
    display: none;
}

.timeline-number {
    width: 56px;
    height: 56px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.timeline-content {
    flex: 1;
    background: var(--dark-light);
    padding: 1.25rem;
    border-radius: 1rem;
}

.timeline-content h4 {
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.timeline-time {
    font-size: 0.75rem;
    color: var(--secondary);
}

/* 技术优势 */
.tech-advantages {
    padding: 5rem 0;
    background: var(--dark-light);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.advantage-card {
    background: var(--dark);
    padding: 1.5rem;
    border-radius: 1rem;
    text-align: center;
    transition: all 0.3s;
}

.advantage-card:hover {
    transform: translateY(-3px);
}

.advantage-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.advantage-card h4 {
    margin-bottom: 0.5rem;
}

.advantage-card p {
    color: var(--gray);
    font-size: 0.85rem;
}

/* 模型兼容性 */
.model-compatibility {
    padding: 4rem 0;
    background: var(--dark);
}

.compatibility-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 2rem;
    align-items: center;
}

.compatibility-left h2 {
    font-size: 1.75rem;
    margin: 0.5rem 0;
}

.model-tags {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.model-group {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.5rem;
}

.model-group strong {
    width: 80px;
    color: var(--secondary);
}

.model-group span {
    background: rgba(37,99,235,0.1);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--white);
}

/* 客户案例详情 */
.case-studies {
    padding: 5rem 0;
    background: var(--dark-light);
}

.cases-grid-detailed {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.case-detailed {
    background: var(--dark);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 0.3s;
}

.case-detailed:hover {
    transform: translateY(-5px);
}

.case-header {
    background: linear-gradient(135deg, rgba(37,99,235,0.2), rgba(6,182,212,0.1));
    padding: 1.5rem;
}

.case-industry {
    display: inline-block;
    background: rgba(37,99,235,0.3);
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.case-header h4 {
    font-size: 1.1rem;
}

.case-content {
    padding: 1.5rem;
}

.case-content p {
    margin-bottom: 0.75rem;
    color: var(--gray);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* FAQ区域 */
.faq-section {
    padding: 5rem 0;
    background: var(--dark);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.faq-item {
    background: var(--dark-light);
    border-radius: 1rem;
    padding: 1.25rem;
    transition: all 0.3s;
}

.faq-item:hover {
    transform: translateY(-3px);
}

.faq-question {
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.faq-answer {
    color: var(--gray);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* 联系表单 */
.contact-form-section {
    padding: 5rem 0;
    background: var(--dark-light);
}

.contact-form-card {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    background: var(--dark);
    border-radius: 1.5rem;
    overflow: hidden;
    border: 1px solid rgba(37,99,235,0.2);
}

.form-left {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    padding: 3rem;
}

.form-left h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.form-left p {
    color: var(--gray);
    margin-bottom: 2rem;
}

.form-left ul {
    list-style: none;
}

.form-left li {
    margin: 0.75rem 0;
    color: var(--white);
}

.form-right {
    padding: 3rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-right input,
.form-right textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--dark-light);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 0.75rem;
    color: var(--white);
    font-family: inherit;
}

.form-right input:focus,
.form-right textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-note {
    font-size: 0.7rem;
    color: var(--gray);
    text-align: center;
    margin-top: 1rem;
}

.btn-block {
    width: 100%;
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .service-block,
    .service-block.reverse {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .compatibility-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-form-card {
        grid-template-columns: 1fr;
    }
    
    .banner-content h1 {
        font-size: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
}

@media (max-width: 768px) {
    .ai-dev-banner {
        padding: 2rem 0;
    }
    
    .banner-stats {
        gap: 1.5rem;
        justify-content: center;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .service-block {
        padding: 1.5rem;
    }
    
    .service-content h3 {
        font-size: 1.5rem;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .form-left,
    .form-right {
        padding: 2rem;
    }
    
    .doc-compare {
        flex-direction: column;
    }
    
    .vs {
        transform: rotate(90deg);
    }
}