/* 首页科技风格样式 */

.tech-style {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* 通用容器 */
.container-demo {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 通用区块标题 */
.section-title-demo {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin: 0 0 15px;
    color: #1a1a1a;
}

.section-subtitle-demo {
    font-size: 16px;
    text-align: center;
    color: #666;
    margin: 0 0 50px;
}

/* 核心业务区块 */
.core-business-section {
    padding: 80px 0;
    background: #fff;
}

.business-grid-demo {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

@media (max-width: 1200px) {
    .business-grid-demo {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .business-grid-demo {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

.business-card-demo {
    background: #fff;
    border: 2px solid #e0e0e0;
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    text-decoration: none;
    display: block;
    position: relative;
    overflow: hidden;
}

.business-card-demo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.business-card-demo:hover {
    transform: translateY(-8px);
    border-color: #667eea;
    box-shadow: 0 12px 32px rgba(102, 126, 234, 0.2);
}

.business-card-demo:hover::before {
    transform: scaleX(1);
}

.business-icon-demo {
    font-size: 56px;
    margin-bottom: 20px;
}

.business-card-demo h3 {
    font-size: 24px;
    font-weight: 600;
    margin: 0 0 15px;
    color: #1a1a1a;
}

.business-card-demo p {
    font-size: 15px;
    line-height: 1.6;
    color: #666;
    margin: 0 0 20px;
}

.business-tags-demo {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.business-tags-demo span {
    padding: 6px 14px;
    background: #f0f0f0;
    border-radius: 20px;
    font-size: 13px;
    color: #555;
}

.learn-more-demo {
    color: #667eea;
    font-weight: 600;
    font-size: 14px;
}

.business-card-demo:hover .learn-more-demo {
    color: #5568d3;
}

/* 成功案例区块 */
.case-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.case-grid-demo {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-item-demo {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.case-item-demo:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 28px rgba(0,0,0,0.12);
}

.case-image-demo {
    width: 100%;
    height: 240px;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.case-image-demo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.case-item-demo:hover .case-image-demo img {
    transform: scale(1.1);
}

.case-content-demo {
    padding: 25px;
}

.case-content-demo h3 {
    font-size: 20px;
    font-weight: 600;
    margin: 0 0 12px;
    color: #1a1a1a;
}

.case-content-demo > p {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
    margin: 0 0 20px;
}

.case-stats-demo {
    display: flex;
    gap: 30px;
}

.stat-item-demo {
    display: flex;
    flex-direction: column;
}

.stat-num-demo {
    font-size: 24px;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 5px;
}

.stat-label-demo {
    font-size: 13px;
    color: #999;
}

/* 行业资讯区块 */
.news-section {
    padding: 80px 0;
    background: #fff;
}

.news-header-demo {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}

.more-link-demo {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: color 0.3s;
}

.more-link-demo:hover {
    color: #5568d3;
}

.news-grid-demo {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

.news-item-demo {
    display: block;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
    text-decoration: none;
}

.news-item-demo:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
    border-color: #667eea;
}

.news-image-demo {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: #f0f0f0;
}

.news-image-demo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.news-item-demo:hover .news-image-demo img {
    transform: scale(1.05);
}

.news-info-demo {
    padding: 20px;
}

.news-info-demo h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 10px;
    color: #1a1a1a;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-desc-demo {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
    margin: 0 0 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-time-demo {
    font-size: 13px;
    color: #999;
}

/* 我们的优势区块 */
.advantage-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.advantage-grid-demo {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.advantage-item-demo {
    background: #fff;
    padding: 35px 25px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transition: all 0.3s;
}

.advantage-item-demo:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.15);
}

.advantage-icon-demo {
    font-size: 48px;
    margin-bottom: 20px;
}

.advantage-item-demo h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 12px;
    color: #1a1a1a;
}

.advantage-item-demo p {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
    margin: 0;
}

/* 联系我们区块 */
.contact-section-demo {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.contact-info-grid-demo {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.contact-item-demo {
    text-align: center;
}

.contact-icon-demo {
    font-size: 48px;
    margin-bottom: 20px;
}

.contact-item-demo h3 {
    font-size: 20px;
    font-weight: 600;
    margin: 0 0 15px;
}

.contact-item-demo p {
    font-size: 15px;
    margin: 5px 0;
    opacity: 0.95;
}

.contact-item-demo a {
    color: #fff;
    text-decoration: none;
    transition: opacity 0.3s;
}

.contact-item-demo a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .section-title-demo {
        font-size: 28px;
    }

    .section-subtitle-demo {
        font-size: 14px;
        margin-bottom: 35px;
    }

    .core-business-section,
    .case-section,
    .news-section,
    .advantage-section,
    .contact-section-demo {
        padding: 50px 0;
    }

    .case-grid-demo,
    .news-grid-demo,
    .advantage-grid-demo,
    .contact-info-grid-demo {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .business-card-demo {
        padding: 30px 20px;
    }

    .news-header-demo {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    .contact-info-grid-demo {
        gap: 30px;
        margin-top: 40px;
    }
}

@media (max-width: 480px) {
    .section-title-demo {
        font-size: 24px;
    }

    .business-icon-demo,
    .advantage-icon-demo,
    .contact-icon-demo {
        font-size: 42px;
    }

    .business-card-demo h3 {
        font-size: 20px;
    }
}