* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', 'Arial', sans-serif;
}
body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

/* 首屏Banner */
.banner {
    margin-top: 80px;
    height: 600px;
    background: linear-gradient(135deg, #f0f7ff 0%, #e6f0ff 100%);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}
.banner-container {
    width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}
.banner-title {
    font-size: 48px;
    font-weight: bold;
    color: #1a1a1a;
    line-height: 1.3;
    margin-bottom: 20px;
}
.banner-title span {
    color: #0066cc;
}
.banner-title .highlight {
    color: #3FCAC0;
}
.banner-subtitle {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
    max-width: 800px;
}
.banner-btns {
    display: flex;
}
.banner-btns .btn {
    padding: 12px 24px;
    font-size: 16px;
    border-radius: 6px;
    margin-right: 20px;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}
.banner-bg {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: url('/assets/banner-bg.jpg') no-repeat center;
    background-size: cover;
}


/* 核心优势 */
.advantage {
    padding: 80px 0;
    background-color: #fff;
}
.section-title {
    text-align: center;
    margin-bottom: 60px;
}
.section-title h2 {
    font-size: 32px;
    font-weight: bold;
    color: #1a1a1a;
    margin-bottom: 15px;
}
.section-title p {
    font-size: 16px;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}
.advantage-container {
    width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.advantage-card {
    background-color: #f9fbff;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}
.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
}
.advantage-icon {
    font-size: 40px;
    color: #0066cc;
    margin-bottom: 20px;
}
.advantage-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a1a1a;
}
.advantage-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

/* 核心产品与技术 */
.product {
    padding: 80px 0;
    background-color: #f5f7fa;
}
.product-container {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 60px;
}
.product-tab {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}
.product-tab-content {
    display: none;
}
.product-tab-content.active {
    display: block;
}
.product-cards {
    margin-top: 30px;
}
.tab-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 30px;
    background-color: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.tab-btn.active,
.tab-btn:hover {
    background-color: #3FCAC0;
    color: #fff;
}
.product-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}
.product-main {
    background-color: #fff;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.product-main-header {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
}
.product-main-img {
    width: 400px;
    height: 250px;
    background: linear-gradient(135deg, #f0f7ff 0%, #e6f0ff 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
}
.product-main-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.product-main-info {
    flex: 1;
}
.product-main-info h3 {
    font-size: 24px;
    font-weight: bold;
    color: #1a1a1a;
    margin-bottom: 15px;
}
.product-main-info ul {
    list-style: none;
}
.product-main-info li {
    font-size: 14px;
    color: #666;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    padding-left: 20px;
    position: relative;
}
.product-main-info li::before {
    content: "";
    width: 6px;
    height: 6px;
    background-color: #3FCAC0;
    border-radius: 50%;
    position: absolute;
    left: 0;
}
.product-main-tags {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}
.product-main-tags span {
    background-color: #3FCAC0;
    color: #fff;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid #3FCAC0;
}
.product-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.product-card-new {
    background-color: #f9fbff;
    border-radius: 12px;
    padding: 24px;
    transition: all 0.3s;
    cursor: pointer;
    border: 2px solid transparent;
    position: relative;
    min-height: 200px;
    display: flex;
    flex-direction: column;
}
.product-card-new:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border-color: #3FCAC0;
}
.product-card-new h4, .product-card-new .subtitle {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
    line-height: 1.4;
}
.product-card-new:hover h4 {
    border-bottom-width: 0.5px;
}
.product-card-new ul {
    list-style: none;
    flex: 1;
}
.product-card-new li {
    font-size: 13px;
    color: #555;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    line-height: 1.5;
}
.product-card-new li::before {
    content: "";
    width: 4px;
    height: 4px;
    background-color: #3FCAC0;
    border-radius: 50%;
    margin-right: 8px;
}
.product-card-new .link {
    position: absolute;
    bottom: 15px;
    right: 15px;
    font-size: 14px;
    color: #3FCAC0;
    display: flex;
    align-items: center;
    gap: 5px;
    white-space: nowrap;
}
.product-card-new .link:hover {
    color: #2ba89d;
}
.product-card {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    border-left: 4px solid #3FCAC0;
}
.product-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a1a1a;
}
.product-card ul {
    list-style: none;
}
.product-card li {
    font-size: 14px;
    color: #666;
    margin-bottom: 5px;
    display: flex;
    align-items: center;
}
.product-card li:before {
    content: "•";
    color: #0066cc;
    font-size: 20px;
    margin-right: 10px;
}

/* 应用场景 */
.scene {
    padding: 80px 0;
    background-color: #fff;
}
.scene-container {
    width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.scene-card {
    background-color: #f9fbff;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}
.scene-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
}
.scene-img {
    height: 180px;
    background-color: #e6f0ff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
    color: #0066cc;
}
.scene-info {
    padding: 20px;
}
.scene-info h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
    color: #1a1a1a;
}
.scene-info p {
    font-size: 14px;
    color: #666;
}

/* 案例展示 */
.case {
    padding: 80px 0;
    background-color: #f5f7fa;
}
.case-container {
    width: 1200px;
    margin: 0 auto;
}
.case-logo {
    position: relative;
    margin-bottom: 60px;
}
/* 3行Logo网格，中间清晰两边渐隐 */
.case-logo-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.case-logo-row {
    display: flex;
    justify-content: center;
    flex-wrap: nowrap;
    gap: 15px;
}
/* 第二行错开显示 */
.case-logo-row:nth-child(2) {
    margin-left: 60px;
}
.case-logo-item {
    width: 120px;
    height: 60px;
    background-color: #fff;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 10px;
    color: #666;
    font-weight: 600;
    font-size: 13px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    border: 1px solid #f0f0f0;
    transition: all 0.3s;
    flex-shrink: 0;
}
.case-logo-item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}
.case-logo-item:hover {
    opacity: 1 !important;
    filter: blur(0) !important;
    box-shadow: 0 4px 15px rgba(0,102,204,0.15);
    border-color: #3FCAC0;
    transform: scale(1.05);
}

/* 从中间向两边透明度递减（第1个和第9个最淡，第5个最清晰） */
/* 位置1和9：最淡 + 边缘渐变消失 */
.case-logo-row .case-logo-item:nth-child(1),
.case-logo-row .case-logo-item:nth-child(9) {
    opacity: 0.8;
    position: relative;
}
/* 第1个Logo：左边渐变消失 */
.case-logo-row .case-logo-item:nth-child(1)::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, #f5f7fa 0%, transparent 60%);
    border-radius: 8px;
    pointer-events: none;
}
/* 第9个Logo：右边渐变消失 */
.case-logo-row .case-logo-item:nth-child(9)::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to left, #f5f7fa 0%, transparent 60%);
    border-radius: 8px;
    pointer-events: none;
}
/* 位置2和8：较淡 */
.case-logo-row .case-logo-item:nth-child(2),
.case-logo-row .case-logo-item:nth-child(8) {
    opacity: 0.9;
}
/* 位置3和7：清晰 */
.case-logo-row .case-logo-item:nth-child(3),
.case-logo-row .case-logo-item:nth-child(7) {
    opacity: 1;
}
/* 位置4和6：清晰 */
.case-logo-row .case-logo-item:nth-child(4),
.case-logo-row .case-logo-item:nth-child(6) {
    opacity: 1;
}
/* 位置5：中间最清晰 */
.case-logo-row .case-logo-item:nth-child(5) {
    opacity: 1;
}
.case-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.case-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.case-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a1a1a;
}
.case-card .case-desc {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
}
.case-card .case-data {
    display: flex;
    gap: 20px;
    font-size: 14px;
    color: #333;
}
.case-data span {
    color: #3FCAC0;
    font-weight: 600;
}

/* 响应式适配 */
@media (max-width: 1200px) {
    .banner-container, .advantage-container, .product-container, .scene-container, .case-container, .footer-container, .footer-bottom {
        width: 90%;
    }
}
@media (max-width: 992px) {
    .advantage-container, .scene-container, .case-list, .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }
    .product-content {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 768px) {
    .banner-title {
        font-size: 36px;
    }
    .advantage-container, .scene-container, .case-list, .footer-container {
        grid-template-columns: 1fr;
    }
    .banner {
        height: 500px;
    }
    .banner-bg {
    }
}