/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS Variables for Design System */
:root {
    --primary-color: #1e40af;
    --primary-light: #46a3fa;
    --secondary-color: #dc2626;
    --accent-color: #fbbf24;
    --text-primary: #374151;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --background-light: #f0f9ff;
    --background-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    scroll-behavior: smooth;
    background-color: var(--background-white);
}

.mark-container {
    max-width: var(--breakpoint-xxxl);
    margin: 0 auto;
    padding: 0 20px;
}
.mark-video-container {
    max-width: auto;
    margin: 0 auto;
    padding: 0 20px;
}


/* Solutions Section */
.mark-solutions {
    /*background: var(--background-light);*/
    padding: 40px 0;
}

.mark-section-header {
    margin-bottom: 40px;
    text-align: left;
}

.mark-section-title {
    font-size: 36px;
    color: var(--text-primary);
    font-weight: bold;
    line-height: 1.3;
    text-align: left;
    margin: 0;
}
.mark-section-title1 {
    font-size: 50px;
    color: var(--text-primary);
    font-weight: bold;
    line-height: 1.3;
    text-align: left;
    margin: 0;
    text-align: center;
}

.mark-section-title span {
    display: block;
}

.mark-highlight {
    color: var(--text-primary);
}

.mark-tabs {
    display: flex;
    gap: 80px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.mark-tab {
    background: #f8f9fa;
    border: none;
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    padding: 6px 20px;
    position: relative;
    transition: var(--transition);
    border-radius: 50px;
    min-width: 166px;
    text-align: center;
    font-weight: 500;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.mark-tab:hover {
    background: #e9ecef;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.mark-tab.mark-active {
    background: var(--text-primary);
    color: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

.mark-tab.mark-active::after {
    display: none;
}

.mark-products-carousel {
    position: relative;
    display: flex;
    align-items: center;
    margin-top: 40px;
}

.mark-carousel-arrow {
    background: #f0f9ff;
    color: white;
    border: none;
    width: 40px;
    height: 80px;
    border-radius: 8px;
    font-size: 20px;
    cursor: pointer;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    /*box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);*/
    transition: var(--transition);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.mark-carousel-arrow.mark-left {
    left: -60px;
}

.mark-carousel-arrow.mark-right {
    right: -60px;
}

.mark-carousel-arrow:hover {
    background: #46a3fa;
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.mark-products-grid {
    display: flex;
    gap: 40px;
    flex: 1;
    justify-content: center;
    align-items: flex-start;
}

.mark-product-card {
    background: white;
    border-radius: 12px;
    padding: 0;
    text-align: center;
    width: 470px;
    /*box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);*/
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.mark-product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.mark-product-badge {
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    background: #dc2626;
    color: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
}

.mark-product-image {
    height: 300px;
    border-radius: 12px 12px 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0;
    overflow: hidden;
    position: relative;
    padding: 20px;
}

.mark-product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: var(--transition);
}

.mark-product-card:hover .mark-product-image img {
    transform: scale(1.05);
}

.mark-product-card-content {
    padding: 25px 20px;
    text-align: center;
}

.mark-product-card h3 {
    font-size: 18px;
    color: #1e293b;
    margin-bottom: 8px;
    font-weight: 600;
    line-height: 1.4;
    text-align: center;
}

.mark-product-model {
    font-size: 16px;
    color: #1e293b;
    margin-bottom: 20px;
    font-weight: 500;
    text-align: center;
}

.mark-product-btn {
    background: #87ceeb;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
    width: 100%;
    text-align: center;
    text-decoration: none;
    display: inline-block;
}

.mark-product-btn:hover {
    background: #6bb6ff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(135, 206, 235, 0.3);
}

/* Products Section */
.mark-products {
    background: var(--background-white);
    padding: 0 0 40px 0;
}

.mark-products-content {
    display: flex;
    align-items: center;
    gap: 0;

    background-image: url('/uploads/litimg/zixun/yongdian.png');
    background-size: cover;
    background-position: center;
    background-blend-mode: overlay;
    padding: 80px 60px;
    border-radius: 15px;
    position: relative;
    overflow: hidden;
}

.mark-products-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;

    z-index: 1;
}

.mark-content-text {
    flex: 2;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 97px 30px 0 0;
}

.mark-content-text h3 {
    font-size: 60px;
    color: var(--text-primary);
    font-weight: bold;
    margin-bottom: 10px;
    text-align: center;
}

.mark-content-text h4 {
    font-size: 40px;
    color: var(--text-primary);
    font-weight: 400;
    margin-bottom: 20px;
    text-align: center;
}

.mark-content-text p {
    color: #46a3fa;
    margin-bottom: 10px;
    font-size: 16px;
    text-align: center;
}

.mark-content-btn {
    background: #46a3fa;
    color: white;
    border: none;
    padding: 6px 10px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 15px;
    margin-top: 20px;
    transition: var(--transition);
    display: block;
    margin-left: 35%;
    margin-right: 35%;
}

.mark-content-btn:hover {
    background: var(--primary-light);
}
.mark-products-content .mark-content-btn {
    background: #46a3fa;
    color: white;
    border: none;
    padding: 6px 30px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 15px;
    margin-top: 20px;
    transition: var(--transition);
    display: block;
    text-align: center;
    font-weight: 500;
    margin-left: auto;
    margin-right: auto;
    width: fit-content;
}

.mark-products-content .mark-content-btn:hover {
    background: var(--primary-light);
}

.mark-content-image {
    flex: 3;
    position: relative;
    z-index: 2;
}

.mark-product-banner {
    background: transparent;
    border-radius: 15px;
    padding: 0;
    position: relative;
    overflow: hidden;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mark-product-devices {
    position: relative;
    z-index: 2;
    text-align: center;
}

.mark-product-devices img {
    max-width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.mark-oil-splashes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    pointer-events: none;
}

.mark-splash {
    position: absolute;
    background: linear-gradient(45deg, #fbbf24, #f59e0b);
    border-radius: 50%;
    opacity: 0.7;
    animation: float 3s ease-in-out infinite;
}

.mark-splash-1 {
    width: 60px;
    height: 60px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.mark-splash-2 {
    width: 40px;
    height: 40px;
    top: 60%;
    right: 15%;
    animation-delay: 1s;
}

.mark-splash-3 {
    width: 80px;
    height: 80px;
    bottom: 20%;
    left: 20%;
    animation-delay: 2s;
}

.mark-splash-4 {
    width: 50px;
    height: 50px;
    top: 40%;
    right: 30%;
    animation-delay: 1.5s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-10px) rotate(180deg);
        opacity: 0.9;
    }
}

.mark-placeholder-image.mark-large {
    height: 300px;
    background: #e5e7eb;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 18px;
}

/* Monitoring Section */
.mark-monitoring {
    background: var(--background-white);
    padding: 0;
}

.mark-monitoring-content {
    display: flex;
    align-items: center;
    gap: 0;

    background-image: url('/uploads/litimg/zixun/24.png');
    background-size: cover;
    background-position: center;
    background-blend-mode: overlay;
    padding: 80px 60px;
    border-radius: 15px;
    position: relative;
    overflow: hidden;
}

.mark-monitoring-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;

    z-index: 1;
}

.mark-monitoring-content .mark-content-text {
    flex: 2;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 75px 30px 0 0;
}

.mark-monitoring-content .mark-content-text h3 {
    font-size: 60px;
    color: var(--text-primary);
    font-weight: bold;
    margin-bottom: 5px;
    text-align: center;
    line-height: 1.2;
}

.mark-monitoring-content .mark-content-text h4 {
    font-size: 40px;
    color: var(--text-primary);
    font-weight: 400;
    margin-bottom: 20px;
    text-align: center;
    line-height: 1.2;
}

.mark-monitoring-content .mark-content-text p {
    color: #46a3fa;
    margin-bottom: 10px;
    font-size: 16px;
    text-align: center;
}

.mark-monitoring-content .mark-content-btn {
    background: #46a3fa;
    color: white;
    border: none;
    padding: 6px 30px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 15px;
    margin-top: 20px;
    transition: var(--transition);
    display: block;
    text-align: center;
    font-weight: 500;
    margin-left: auto;
    margin-right: auto;
    width: fit-content;
}

.mark-monitoring-content .mark-content-btn:hover {
    background: var(--primary-light);
}

.mark-cloud-icon {
    font-size: 24px;
    color: var(--primary-color);
    margin: 20px 0;
    font-weight: bold;
    text-align: center;
}

.mark-monitoring-content .mark-content-image {
    flex: 3;
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    min-height: 400px;
    padding-right: 55px;
}

.mark-monitoring-content .mark-content-image img:first-child {
    position: relative;
    z-index: 2;
    max-width: 30%;
    height: auto;
    max-height: 300px;
    object-fit: contain;
    filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.15));
    margin-right: -8%;
    transform: translateX(60%) translateY(25%);
}

.mark-monitoring-content .mark-content-image img:last-child {
    position: relative;
    z-index: 1;
    max-width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.25));
    transform: translateX(5%) translateY(5%);
}

.mark-cloud-service {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    margin-top: 10px;
    display: block;
    text-align: center;
    padding: 3px 16px;
    border: 1px solid #000000;
    border-radius: 6px;
    background: transparent;
    transition: var(--transition);
    margin-left: auto;
    margin-right: auto;
    width: fit-content;
}

.mark-cloud-service:hover {
    background: #f8f9fa;
    color: var(--text-primary);
}

/* Testimonials Section */
.mark-testimonials {
    background: var(--background-white);
    padding: 40px 0;
}

.mark-industry-tabs {
    display: flex;
    justify-content: space-between;
    margin-bottom: 50px;
    flex-wrap: wrap;
    padding-bottom: 20px;
    border-bottom: 1px solid #e5e7eb;
}

.mark-industry-tab {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 16px;
    cursor: pointer;
    padding: 10px 0;
    position: relative;
    transition: var(--transition);
}

.mark-industry-tab.mark-active {
    color: #46a3fa;
    position: relative;
}

.mark-industry-tab.mark-active::after {
    content: '';
    position: absolute;
    bottom: 0px;
    left: 0;
    right: 0;
    height: 3px;
    background: #46a3fa;
    border-radius: 2px;
}

.mark-testimonial-content {
    position: relative;
    display: flex;
    align-items: center;
    margin-bottom: 0;
}

.mark-testimonial-arrow {
    background: #e0f2fe;
    color: white;
    border: none;
    width: 30px;
    height: 40px;
    border-radius: 8px;
    font-size: 20px;
    cursor: pointer;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
    transition: var(--transition);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.mark-testimonial-arrow.mark-left {
    left: 9px;
}

.mark-testimonial-arrow.mark-right {
    right: 9px;
}

.mark-testimonial-arrow:hover {
    background: #46a3fa;
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.mark-testimonial-block {
    background: #e0f2fe;
    padding: 40px 50px;
    border-radius: 2px;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    align-items: center;
    gap: 30px;
    flex: 1;
    margin: 0;
    position: relative;
    min-height: 280px;
}

.mark-testimonial-left {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
}

.mark-testimonial-center {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
}

.mark-testimonial-right {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.mark-quote-mark {
    font-size: 24px;
    color: #374151;
    font-weight: bold;
    line-height: 1;
    flex-shrink: 0;
    margin-bottom: 10px;
}

.mark-testimonial-text h3 {
    font-size: 20px;
    color: #374151;
    margin-bottom: 10px;
    font-weight: 700;
    line-height: 1.3;
}

.mark-testimonial-text p {
    font-size: 14px;
    color: #46a3fa;
    line-height: 1.5;
    margin: 0;
}

.mark-testimonial-benefits {
    margin-bottom: 15px;
}

.mark-testimonial-benefits ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mark-testimonial-benefits li {
    color: #374151;
    margin-bottom: 8px;
    position: relative;
    padding-left: 15px;
    font-size: 14px;
    line-height: 1.4;
}

.mark-testimonial-benefits li::before {
    content: '•';
    color: #374151;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.mark-testimonial-btn {
    background: #46a3fa;
    color: white;
    border: none;
    padding: 6px 20px;
    border-radius: 25px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
    align-self: center;
    min-width: 140px;
    white-space: nowrap;
}

.mark-testimonial-btn:hover {
    background: var(--primary-light);
    transform: translateY(-1px);
}

.mark-testimonial-pagination {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    justify-content: center;
    gap: 8px;
    z-index: 3;
}

.mark-pagination-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #cbd5e1;
    cursor: pointer;
    transition: var(--transition);
}

.mark-pagination-dot.mark-active {
    background: #46a3fa;
}

.mark-partners-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.mark-partner-logo {
    background: #fff;
    padding: 0px;
    text-align: center;
    border-radius: 2px;
    border: 1px solid #e0f2fe;
    /*box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);*/
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80px;
}

.mark-partner-logo:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.mark-partner-logo img {
    max-width: 60%;
    max-height: 60px;
    object-fit: contain;
    filter: grayscale(0%);
    transition: var(--transition);
}

.mark-partner-logo:hover img {
    filter: grayscale(0%);
}

/* Information Center */
.mark-info-center {
    padding: 40px 0;
    background-color: #e0f2fe;
}

.mark-info-center .mark-container {
    max-width: var(--breakpoint-xxxl);
    margin: 0 auto;
    padding: 0 20px;
}

.mark-info-center .mark-section-header {
    text-align: center;
    margin-bottom: 40px;
}

.mark-info-center .mark-section-title {
    font-size: 36px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 15px;
    line-height: 1.2;
}
.mark-info-center .mark-section-title1 {
    font-size: 50px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 15px;
    line-height: 1.2;
    text-align: center;
}

.mark-info-center .mark-section-subtitle {
    font-size: 30px;
    color: #666;
    margin-bottom: 10px;
}

.mark-info-center .mark-info-link {
    color: #46a3fa;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
}

.mark-info-center .mark-info-link:hover {
    text-decoration: underline;
}

.mark-info-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 0px;
}

.mark-info-card {
    border-radius: 12px;
    overflow: hidden;

    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.mark-info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.mark-info-card-image {
    height: 200px;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.mark-info-card-overlay {
    background: linear-gradient(135deg, rgba(147, 197, 253, 0.7), rgba(59, 130, 246, 0.18));
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
    border-radius: 12px;
}

.mark-info-card-english {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    margin: 0 0 8px 0;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.mark-info-card-chinese {
    font-size: 18px;
    font-weight: 600;
    color: #fff;
    margin: 0;
    line-height: 1.3;
}

.mark-info-card-body {
    padding: 25px;
}

.mark-info-card-body ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mark-info-card-body li {
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: flex-start;
    line-height: 1.5;
}

.mark-info-card-body li a {
    display: flex;
    align-items: flex-start;
    text-decoration: none;
    color: inherit;
    width: 100%;
    transition: all 0.3s ease;
}

.mark-info-card-body li a:hover {
    color: #46a3fa;
    transform: translateX(5px);
}

.mark-info-card-body li:last-child {
    border-bottom: none;
}

.mark-info-date {
   /* background: #46a3fa;*/
    color: #6062668f;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 4px;
    margin-right: 12px;
    flex-shrink: 0;
    min-width: 50px;
    text-align: center;
    position: relative;
}

.mark-info-date::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background-color: #46a3fa;
    border-radius: 50%;    
}

.mark-info-card-body li span:not(.mark-info-date) {
    color: #333;
    font-size: 14px;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.mark-info-card-body li a {
    color: #374151;
}

.mark-info-card-body li a:hover {
    color: #46a3fa;
}

.mark-info-card-body li a span:not(.mark-info-date) {
    color: #374151;
    font-weight: 500;
}

.mark-info-card-body li a:hover span:not(.mark-info-date) {
    color: #46a3fa;
}

.mark-info-center-btn {
    text-align: center;
}

.mark-info-center .mark-content-btn {
    display: inline-block;
    background: #46a3fa;
    color: #fff;
    padding: 6px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.mark-info-center .mark-content-btn:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

/* 资讯中心响应式设计 */
@media (max-width: 1024px) {
    .mark-info-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .mark-info-center {
        padding: 60px 0;
    }
    
    .mark-info-center .mark-section-title {
        font-size: 28px;
    }
    
    .mark-info-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .mark-info-card-image {
        height: 160px;
    }
    
    .mark-info-card-chinese {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .mark-info-center .mark-container {
        padding: 0 15px;
    }
    
    .mark-info-center .mark-section-title {
        font-size: 24px;
    }
    
    .mark-info-card-body {
        padding: 20px;
    }
    
    .mark-info-center .mark-content-btn {
        padding: 12px 30px;
        font-size: 14px;
    }
}


/* 移动端轮播优化 */
@media (max-width: 768px) {
    .mark-products-carousel {
        position: relative;
        overflow: hidden;
        width: 100%;
        min-height: 400px;
    }
    
    .mark-products-grid {
        display: flex;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        width: 100%;
        height: 100%;
    }
    
    .mark-product-card {
        min-width: 100%;
        width: 100%;
        flex-shrink: 0;
        flex-grow: 0;
        display: block;
        position: relative;
    }
    
    /* 选项卡网格布局优化 */
    .mark-tabs {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(2, 1fr);
        gap: 8px;
        margin-bottom: 25px;
    }
    
    .mark-tab {
        font-size: 12px;
        padding: 10px 6px;
        min-height: 45px;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .mark-section-title {
        font-size: 28px;
    }
    
    .mark-products-carousel {
        margin-top: 30px;
    }
    
    .mark-carousel-arrow {
        width: 35px;
        height: 35px;
        font-size: 18px;
    }
    
    .mark-carousel-arrow.mark-left {
        left: -50px;
    }
    
    .mark-carousel-arrow.mark-right {
        right: -50px;
    }
    
    .mark-tabs {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(2, 1fr);
        gap: 10px;
        margin-bottom: 30px;
    }
    
    .mark-tab {
        width: 100%;
        text-align: center;
        padding: 12px 10px;
        font-size: 14px;
        min-height: 50px;
        display: flex;
        align-items: center;
        justify-content: center;
        line-height: 1.3;
        word-break: keep-all;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .mark-products-carousel {
        margin-top: 30px;
        position: relative;
        overflow: hidden;
    }
    
    .mark-carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 18px;
        z-index: 10;
    }
    
    .mark-carousel-arrow.mark-left {
        left: 10px;
        top: 50%;
        transform: translateY(-50%);
    }
    
    .mark-carousel-arrow.mark-right {
        right: 10px;
        top: 50%;
        transform: translateY(-50%);
    }
    
    .mark-products-grid {
        display: flex;
        gap: 0;
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        overflow: hidden;
        width: 100%;
        height: 100%;
        transition: transform 0.3s ease-in-out;
    }
    
    .mark-product-card {
        width: 100%;
        min-width: 100%;
        max-width: 350px;
        margin: 0 auto;
        flex-shrink: 0;
        flex-grow: 0;
        display: block;
        transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
    }
    
    .mark-product-image {
        height: 160px;
        padding: 15px;
    }
    
    .mark-product-card-content {
        padding: 20px 15px;
    }
    
    .mark-product-card h3 {
        font-size: 16px;
    }
    
    .mark-product-model {
        font-size: 14px;
    }
    
    .mark-product-btn {
        padding: 10px 25px;
        font-size: 13px;
    }
    
    .mark-products-content,
    .mark-monitoring-content {
        flex-direction: column;
        text-align: center;
    }
    
    .mark-product-banner {
        min-height: 300px;
        padding: 30px;
    }
    
    .mark-product-devices img {
        max-height: 250px;
    }
    
    .mark-splash {
        display: none;
    }
    
    .mark-testimonial-block {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
    
    .mark-testimonial-left {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .mark-testimonial-center {
        order: 2;
    }
    
    .mark-testimonial-right {
        order: 3;
        padding: 13px 0;
    }
    
    .mark-testimonial-arrow {
        display: none;
    }
    
    .mark-industry-tabs {
        justify-content: center;
        gap: 15px;
    }
    
    .mark-industry-tab {
        font-size: 14px;
        padding: 8px 12px;
    }
    
    .mark-partners-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }
    
    .mark-info-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .mark-info-center {
        padding: 60px 0;
    }
    
    .mark-info-center .mark-section-title {
        font-size: 36px;
    }
}

@media (max-width: 480px) {
    .mark-container {
        padding: 0 15px;
    }
    
    .mark-section-title {
        font-size: 24px;
    }
    
    .mark-products-carousel {
        margin-top: 20px;
    }
    
    .mark-carousel-arrow {
        width: 30px;
        height: 30px;
        font-size: 16px;
    }
    
    .mark-carousel-arrow.mark-left {
        left: -40px;
    }
    
    .mark-carousel-arrow.mark-right {
        right: -40px;
    }
    
    .mark-tabs {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(2, 1fr);
        gap: 10px;
        margin-bottom: 30px;
    }
    
    .mark-tab {
        width: 100%;
        text-align: center;
        padding: 12px 8px;
        font-size: 13px;
        min-height: 50px;
        display: flex;
        align-items: center;
        justify-content: center;
        line-height: 1.3;
        word-break: keep-all;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .mark-products-carousel {
        margin-top: 20px;
        position: relative;
        overflow: hidden;
        width: 100%;
        min-height: 350px;
    }
    
    .mark-carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 18px;
        z-index: 10;
    }
    
    .mark-carousel-arrow.mark-left {
        left: 10px;
        top: 50%;
        transform: translateY(-50%);
    }
    
    .mark-carousel-arrow.mark-right {
        right: 10px;
        top: 50%;
        transform: translateY(-50%);
    }
    
    .mark-products-grid {
        display: flex;
        gap: 0;
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        overflow: hidden;
        width: 100%;
        height: 100%;
        transition: transform 0.3s ease-in-out;
    }
    
    .mark-product-card {
        width: 100%;
        min-width: 100%;
        max-width: 300px;
        margin: 0 auto;
        flex-shrink: 0;
        flex-grow: 0;
        display: block;
        transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
    }
    
    .mark-product-image {
        height: 140px;
        padding: 12px;
    }
    
    .mark-product-card-content {
        padding: 15px 12px;
    }
    
    .mark-product-card h3 {
        font-size: 14px;
    }
    
    .mark-product-model {
        font-size: 13px;
    }
    
    .mark-product-btn {
        padding: 8px 20px;
        font-size: 12px;
    }
    
    .mark-products-content,
    .mark-monitoring-content {
        padding: 30px;
    }
    
    .mark-product-banner {
        min-height: 250px;
        padding: 20px;
    }
    
    .mark-product-devices img {
        max-height: 200px;
    }
    
    .mark-testimonial-block {
        padding: 20px;
    }
}

/* 监控板块图片响应式设计 */
@media (max-width: 768px) {
    .mark-monitoring-content .mark-content-image {
        min-height: 300px;
        padding-right: 10px;
    }

    .mark-monitoring-content .mark-content-image img:first-child {
        max-width: 35%;
        max-height: 180px;
        margin-right: -5%;
        transform: translateX(-5%) translateY(5%);
    }

    .mark-monitoring-content .mark-content-image img:last-child {
        max-width: 70%;
        max-height: 250px;
        transform: translateX(3%) translateY(3%);
    }
}

@media (max-width: 576px) {
    .mark-monitoring-content .mark-content-image {
        min-height: 250px;
    }

    .mark-monitoring-content .mark-content-image img:first-child {
        max-width: 30%;
        max-height: 150px;
        margin-right: -3%;
        transform: translateX(-3%) translateY(3%);
    }

    .mark-monitoring-content .mark-content-image img:last-child {
        max-width: 65%;
        max-height: 200px;
        transform: translateX(2%) translateY(2%);
    }
}

/* Video Section Styles */
.mark-video-section {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    padding: 30px 0 20px 0;
    position: relative;
    overflow: hidden;
}

.mark-video-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e0f2fe" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>') repeat;
    opacity: 0.3;
    z-index: 0;
}

.mark-video-carousel {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0px;
    z-index: 1;
}

.mark-video-players {
    display: flex;
    gap: 0;
    align-items: center;
    justify-content: center;
    width: 100%;
    position: relative;
}

.mark-video-player {
    background: #e0f2fe;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    width: calc(33.333% - 10px);
    height: 300px;
    flex-shrink: 0;
    margin: 0 10px;
    display: flex;
    flex-direction: column;
}

.mark-video-player:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
}

.mark-video-poster {
    position: relative;
    width: 100%;
    height: 180px;
    overflow: hidden;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #e0f2fe;
}

.mark-video-poster img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    border-radius: 8px 8px 0 0;
}

.mark-video-player:hover .mark-video-poster img {
    transform: scale(1.05);
}

.mark-video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity 0.3s ease;
    border-radius: 8px 8px 0 0;
}

.mark-video-player:hover .mark-video-overlay {
    opacity: 0.8;
}

.mark-video-play-btn {
    background: #46a3fa;
    border: none;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.mark-video-play-btn:hover {
    background: #46a3fa;
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.mark-video-play-btn i {
    color: #ffffff;
    font-size: 24px;
    margin-left: 3px;
}

.mark-video-controls {
    background: #ffffff;
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    height: 70px;
    border-radius: 0 0 12px 12px;
    margin-top: auto;
}

.mark-video-time {
    font-size: 13px;
    color: #374151;
    font-weight: 500;
}

.mark-video-progress {
    position: relative;
    height: 6px;
    background: #e5e7eb;
    border-radius: 3px;
    cursor: pointer;
    margin: 5px 0;
}

.mark-video-progress-bar {
    height: 100%;
    background: #46a3fa;
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s ease;
}

.mark-video-progress-handle {
    position: absolute;
    top: 50%;
    left: 0%;
    width: 14px;
    height: 14px;
    background: #46a3fa;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: all 0.1s ease;
    box-shadow: 0 2px 6px rgba(59, 130, 246, 0.3);
    border: 2px solid #ffffff;
}

.mark-video-progress:hover .mark-video-progress-handle {
    transform: translate(-50%, -50%) scale(1.2);
}

.mark-video-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 5px;
}

.mark-video-volume,
.mark-video-fullscreen {
    background: none;
    border: none;
    color: #6b7280;
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-size: 16px;
}

.mark-video-volume:hover,
.mark-video-fullscreen:hover {
    color: #46a3fa;
    background: #f0f9ff;
}

.mark-video-nav {
    background: rgba(59, 130, 246, 0.8);
    color: white;
    border: none;
    width: 40px;
    height: 80px;
    border-radius: 0 8px 8px 0;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    backdrop-filter: blur(4px);
}

.mark-video-nav:hover {
    background: rgba(37, 99, 235, 0.9);
    transform: translateY(-50%) scale(1.05);
}

.mark-video-prev {
    left: 0;
    border-radius: 0 8px 8px 0;
}

.mark-video-next {
    right: 0;
    border-radius: 8px 0 0 8px;
}

.mark-video-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.mark-video-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #cbd5e1;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mark-video-dot.mark-active {
    background: #46a3fa;
    transform: scale(1.2);
}

.mark-video-dot:hover {
    background: #60a5fa;
    transform: scale(1.1);
}

/* Responsive Design for Video Section */
@media (max-width: 1024px) {
    .mark-video-player {
        width: calc(33.333% - 8px);
        height: 220px;
        margin: 0 4px;
    }
    
    .mark-video-poster {
        height: 150px;
    }
    
    .mark-video-controls {
        height: 70px;
    }
    
    .mark-video-nav {
        width: 25px;
        height: 50px;
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .mark-video-section {
        padding: 60px 0;
    }
    
    .mark-video-players {
        flex-direction: column;
        gap: 20px;
    }
    
    .mark-video-player {
        width: 100%;
        max-width: 400px;
        height: 250px;
        margin: 0;
    }
    
    .mark-video-poster {
        height: 180px;
    }
    
    .mark-video-controls {
        height: 70px;
    }
    
    .mark-video-nav {
        display: none;
    }
    
    .mark-video-pagination {
        margin-top: 30px;
    }
}

@media (max-width: 576px) {
    .mark-video-section {
        padding: 40px 0;
    }
    
    .mark-video-player {
        height: 220px;
    }
    
    .mark-video-poster {
        height: 150px;
    }
    
    .mark-video-controls {
        padding: 12px;
        height: 70px;
    }
    
    .mark-video-time {
        font-size: 12px;
    }
    
    .mark-video-play-btn {
        width: 60px;
        height: 60px;
    }
    
    .mark-video-play-btn i {
        font-size: 20px;
    }
}