:root {
    --primary-blue: #0066cc;
    --dark-blue: #004080;
    --light-blue: #3399ff;
    --accent-blue: #00aaff;
    --gradient-blue: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    --text-dark: #333;
    --text-light: #f8f9fa;
    --gray-bg: #f5f7fa;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 导航栏 */
.navbar {
    background-color: rgba(0, 68, 136, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: none;
}

.navbar.scrolled {
    background-color: var(--dark-blue);
    padding: 0.5rem 2rem;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 45px;
    width: auto;
    margin-right: 10px;
    background-color: transparent;
    padding: 0;
    border-radius: 0;
    box-shadow: none;
    filter: brightness(0) invert(1);
    object-fit: contain;
}

.logo-text {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: normal;
    font-size: 1rem;
    transition: color 0.3s;
    position: relative;
}

.nav-links a:hover {
    color: #FFFDF6;
}

/* 首页和联系我们链接下划线效果 */
.nav-links li:first-child a,
.nav-links li:last-child a {
    position: relative;
    overflow: hidden;
}

.nav-links li:first-child a::after,
.nav-links li:last-child a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: white;
    transition: width 0.3s ease;
}

.nav-links li:first-child a:hover::after,
.nav-links li:last-child a:hover::after {
    width: 100%;
}

/* 移除下划线效果 */

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute !important;
    top: 100% !important;
    left: 50% !important;
    min-width: 200px;
    background-color: rgba(0, 68, 136, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-radius: 12px;
    z-index: 9999 !important;
    list-style: none;
    padding: 12px 0;
    display: none;
    transform: translateX(-50%);
    text-align: center;
}

/* 下拉菜单显示由JavaScript控制 */
.dropdown-menu.show {
    display: block !important;
    transform: translateX(-50%) !important;
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 12px 16px;
    color: white;
    text-decoration: none;
    font-weight: 400;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border-radius: 4px;
    margin: 2px 8px;
}

.dropdown-menu a:hover {
    background-color: var(--accent-blue);
    color: white;
    transform: none;
}

.dropdown>a i {
    margin-left: 5px;
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.dropdown:hover>a i {
    transform: rotate(180deg);
}

/* 大型下拉菜单 */
.mega-dropdown {
    position: relative;
}

.mega-menu {
    position: absolute !important;
    top: 100% !important;
    left: 50% !important;
    width: 950px;
    background-color: rgba(0, 68, 136, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    z-index: 9999 !important;
    display: none;
    transform: translateX(-50%);
}

/* 大型下拉菜单显示由JavaScript控制 */
.mega-menu.show {
    display: block !important;
    transform: translateX(-50%) !important;
}

.mega-menu-content {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.2rem;
    padding: 2rem;
}

.mega-menu-section h4 {
    color: var(--accent-blue);
    font-size: 1rem;
    margin-bottom: 0.3rem;
    font-weight: 600;
}

.mega-menu-section h4 a {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-blue);
}

.mega-menu-section ul {
    list-style: none;
    padding: 0;
}

.mega-menu-section li {
    margin-bottom: 0.5rem;
}

.mega-menu-section a {
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
    display: block;
    padding: 0.3rem 0;
}

.mega-menu-section a:hover {
    color: var(--accent-blue);
}

/* 增强型下拉菜单 */
.enhanced-dropdown {
    min-width: 160px;
    text-align: center;
}

.enhanced-dropdown a {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 16px;
    text-align: center;
    margin: 2px auto;
    border-radius: 6px;
    width: calc(100% - 16px);
}

.enhanced-dropdown a i {
    margin-right: 8px;
    width: 16px;
    text-align: center;
    color: var(--accent-blue);
    flex-shrink: 0;
    font-size: 0.9rem;
}

.enhanced-dropdown a .menu-desc {
    font-size: 0.8rem;
    opacity: 0.8;
    margin-top: 2px;
}

.enhanced-dropdown a:hover {
    background-color: var(--accent-blue);
    color: white;
    transform: none;
}

.enhanced-dropdown a:hover i {
    color: white;
}

/* 英雄区域 */
.hero {
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
    padding: 0 2rem;
}

/* 轮播背景 */
.hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.slide.active {
    opacity: 1;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-blue);
    background-blend-mode: overlay;
    opacity: 0;
    display: none;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiPjxkZWZzPjxwYXR0ZXJuIGlkPSJwYXR0ZXJuIiB3aWR0aD0iNDAiIGhlaWdodD0iNDAiIHBhdHRlcm5Vbml0cz0idXNlclNwYWNlT25Vc2UiIHBhdHRlcm5UcmFuc2Zvcm09InJvdGF0ZSg0NSkiPjxyZWN0IHdpZHRoPSIyMCIgaGVpZ2h0PSIyMCIgZmlsbD0icmdiYSgyNTUsMjU1LDI1NSwwLjA1KSIvPjwvcGF0dGVybj48L2RlZnM+PHJlY3QgZmlsbD0idXJsKCNwYXR0ZXJuKSIgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIvPjwvc3ZnPg==');
}

.hero-content {
    max-width: 800px;
    z-index: 1;
    text-align: center;
}

/* 文字轮播 */
.hero-text-slider {
    position: relative;
    width: 100%;
    height: auto;
}

.hero-slide-text {
    opacity: 0;
    transition: opacity 2s ease-in-out;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    color: #0C3285;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4), 0 0 15px rgba(255, 255, 255, 0.6);
}

.hero-slide-text p {
    color: #000066;
}

.hero-slide-text.active {
    opacity: 1;
    position: relative;
}

.hero-slide-text h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5), 0 0 20px rgba(255, 255, 255, 0.8), 2px 2px 4px rgba(255, 255, 255, 0.6);
    white-space: nowrap;
    color: #0C3285;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.8);
    text-stroke: 1px rgba(255, 255, 255, 0.8);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    white-space: nowrap;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    color: #000066;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: white;
    color: var(--primary-blue);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-primary {
    background-color: white;
    color: var(--primary-blue);
}

.btn-outline {
    background-color: transparent;
    color: white;
    border: 2px solid white;
    margin-left: 1rem;
}

.btn-outline:hover {
    background-color: white;
    color: var(--primary-blue);
}

/* 英雄区域统计数据 */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    max-width: 600px;
}

.hero-stats .stat-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s ease;
}

.hero-stats .stat-item:hover {
    transform: translateY(-5px);
}

.hero-stats .stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-stats .stat-label {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    font-weight: 500;
}

.animated-truck {
    position: absolute;
    bottom: -50px;
    left: 0;
    width: 200px;
    height: 100px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 50"><path d="M10,30 L30,30 L35,20 L65,20 L70,30 L90,30 L90,40 L80,40 L80,45 L70,45 L70,40 L30,40 L30,45 L20,45 L20,40 L10,40 Z" fill="white" opacity="0.8"/><circle cx="25" cy="45" r="5" fill="white" opacity="0.8"/><circle cx="75" cy="45" r="5" fill="white" opacity="0.8"/></svg>') no-repeat;
    animation: moveTruck 20s linear infinite;
}

@keyframes moveTruck {
    0% {
        transform: translateX(-200px);
    }

    100% {
        transform: translateX(calc(100vw + 200px));
    }
}

/* 服务部分 */
.services {
    padding: 5rem 2rem;
    background-color: var(--gray-bg);
}

.section-title {
    text-align: center;
    margin-bottom: 0.5rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--dark-blue);
    margin-top: 0;
    margin-bottom: 0.3rem;
}

.section-title h2 .english-subtitle {
    font-size: 1.5rem;
    font-weight: normal;
    color: #f2f3f3;
}

.section-title h2::after {
    content: '';
    position: absolute;
    width: 50%;
    height: 3px;
    background: var(--gradient-blue);
    bottom: -10px;
    left: 25%;
    display: none;
}

.section-title p {
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.service-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.service-icon {
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-blue);
    color: white;
    font-size: 3rem;
}

.service-content {
    padding: 2rem;
}

.service-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.3rem;
    color: var(--dark-blue);
}

/* 关于我们 */
.about {
    padding: 1rem 1rem 2rem 1rem;
    display: flex;
    align-items: center;
    background-color: white;
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    align-items: center;
}

.about-image {
    position: relative;
    height: 400px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.about-image a {
    position: relative;
    z-index: 2;
    display: block;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.about-image:hover img {
    transform: scale(1.50);
}

.about-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 68, 136, 0.3);
    z-index: 1;
    pointer-events: none;
}

.about-content h1 {
    font-size: 3.0rem;
    font-weight: 900;
    background: linear-gradient(45deg, #0066cc, #000099, #000099);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 4px rgba(0, 102, 204, 0.3);
    margin-bottom: 0.3rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    animation: gradientShift 3s ease-in-out infinite;
    position: relative;
}

.about-content h1::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, #0066cc, #000099, #000099);
    background-size: 200% 200%;
    animation: gradientShift 3s ease-in-out infinite;
    z-index: -1;
    filter: blur(20px);
    opacity: 0.3;
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.about-content h2 {
    font-size: 2.5rem;
    color: var(--dark-blue);
    margin-top: 0;
    margin-bottom: 1.5rem;
}

.about-content h2 a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    position: relative;
    display: inline-block;
}

.about-content h2 a:hover {
    color: #000099;
    transform: translateY(-2px);
}

.about-content h2 a:hover .english-subtitle {
    color: #000099;
}

.about-content h2 .english-subtitle {
    font-size: 1.5rem;
    font-weight: normal;
    color: #666;
    transition: color 0.3s ease;
}

.about-content p {
    margin-bottom: 1.5rem;
    color: #555;
    line-height: 1.8;
    letter-spacing: 1px;
    text-align: justify;
    text-indent: 2em;
}

.stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--gray-bg);
    border-radius: 8px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #666;
    font-size: 0.9rem;
}

/* 科技展示 */
.tech {
    padding: 5rem 2rem;
    background: var(--gradient-blue);
    color: white;
}

.tech-container {
    max-width: 1200px;
    margin: 0 auto;
}

.tech h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: white !important;
}

.tech .section-title h2 {
    color: white !important;
}

.tech .section-title p {
    color: rgba(255, 255, 255, 0.9) !important;
}

/* 服务体系卡片现代科技风格 */
.tech-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 1rem;
}

.tech-feature-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: all 0.3s ease;
}

.tech-feature-link:hover {
    text-decoration: none;
    color: inherit;
}

.tech-feature {
    text-align: center;
    padding: 2.5rem 2rem;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1), inset 0 1px 1px rgba(255, 255, 255, 0.2);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    z-index: 1;
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.tech-feature:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.2), rgba(0, 170, 255, 0.1));
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.tech-feature:hover {
    transform: translateY(-25px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), inset 0 1px 1px rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.3);
}

.tech-feature:hover:before {
    opacity: 1;
}

.tech-icon {
    position: relative;
    width: 90px;
    height: 90px;
    margin: 0 auto 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    border-radius: 50%;
    box-shadow: 0 10px 25px rgba(0, 102, 204, 0.3);
    transition: all 0.4s ease;
}

.tech-icon:after {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    70% {
        transform: scale(1.1);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

.tech-feature:hover .tech-icon {
    transform: scale(1.1);
    box-shadow: 0 15px 35px rgba(0, 102, 204, 0.4);
}

.tech-feature h3 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    color: white;
    position: relative;
    display: inline-block;
}

.tech-feature h3:after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.8), transparent);
    transform: translateX(-50%);
}

.tech-feature p {
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 0.8rem;
    font-size: 0.85rem;
    line-height: 1.6;
    text-align: left;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3), 0 0 20px rgba(0, 170, 255, 0.2);
    transition: all 0.3s ease;
    position: relative;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .tech-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .tech-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .tech-feature {
        padding: 2rem 1.5rem;
    }
    
    .tech-icon {
        width: 80px;
        height: 80px;
        font-size: 2.2rem;
        margin-bottom: 1.5rem;
    }
    
    .tech-feature h3 {
        font-size: 1.4rem;
    }
}

@media (max-width: 576px) {
    .tech-features {
        grid-template-columns: 1fr;
        max-width: 350px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .tech-feature {
        padding: 2rem 1.5rem;
    }
    
    .tech-icon {
        width: 70px;
        height: 70px;
        font-size: 2rem;
    }
}

/* 技术架构图 */
.tech-architecture {
    display: grid;
    grid-template-rows: repeat(4, 1fr);
    gap: 2rem;
    margin: 3rem 0;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.architecture-layer {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.3s ease;
}

.architecture-layer:hover {
    transform: translateX(10px);
}

.architecture-layer h4 {
    color: var(--accent-blue);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
    text-align: center;
}

.layer-items {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: flex-start;
}

.layer-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.layer-item:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

/* 技术特性指标 */
.tech-metrics {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.metric {
    background: rgba(0, 170, 255, 0.2);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(0, 170, 255, 0.3);
}

/* 实时运营数据 */
.real-time-dashboard {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 50%, var(--accent-blue) 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.real-time-dashboard::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="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.real-time-dashboard h3 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: white;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.dashboard-section {
    width: 100%;
    background-color: rgba(0, 68, 136, 0.9);
    backdrop-filter: blur(10px);
    padding: 0.6rem 0;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    justify-content: center;
    padding: 0 2rem;
}

.dashboard-item {
    background: rgba(0, 68, 136, 0.9);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(0, 102, 204, 0.3);
    border-radius: 16px;
    padding: 0.8rem 1.2rem;
    display: flex;
    flex-direction: row;
    align-items: center;
    transition: all 0.3s ease;
    text-align: left;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
    min-height: 60px;
    width: 280px;
}

.dashboard-item:hover {
    transform: translateY(-8px) scale(1.02);
    background: rgba(0, 102, 204, 0.95);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(51, 153, 255, 0.5);
}

.dashboard-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(51, 153, 255, 0.4), rgba(0, 170, 255, 0.3));
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1.2rem;
    font-size: 1.4rem;
    color: white;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.dashboard-item:hover .dashboard-icon {
    background: linear-gradient(135deg, rgba(51, 153, 255, 0.6), rgba(0, 170, 255, 0.4));
    transform: rotate(10deg) scale(1.1);
    border-color: rgba(255, 255, 255, 0.6);
}

.dashboard-data {
    flex: 1;
    width: 100%;
}

.dashboard-data a {
    text-decoration: none;
    color: inherit;
}

.dashboard-data a:hover {
    text-decoration: none;
}

.data-value {
    font-size: 1rem;
    font-weight: 600;
    color: white;
    margin-bottom: 0.25rem;
    line-height: 1.3;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    word-wrap: break-word;
}

.data-label {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    letter-spacing: 0.2px;
}

/* 客户评价 */
.testimonials {
    padding: 5rem 2rem;
    background-color: var(--gray-bg);
}

.testimonials-container {
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-slider {
    position: relative;
    overflow: hidden;
}

.testimonial-slide {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    margin: 0 1rem;
}

.testimonial-content {
    font-style: italic;
    margin-bottom: 1.5rem;
    color: #555;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 1rem;
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info h4 {
    color: var(--dark-blue);
    margin-bottom: 0.2rem;
}

.author-info p {
    color: #777;
    font-size: 0.9rem;
}

/* 联系我们 */
.contact {
    padding: 5rem 2rem;
    background-color: white;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-info h2 {
    font-size: 2.5rem;
    color: var(--dark-blue);
    margin-bottom: 1.5rem;
}

.contact-info p {
    margin-bottom: 2rem;
    color: #555;
}

.contact-details {
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.3rem;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    font-size: 1.2rem;
}

.contact-form {
    background: var(--gray-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #555;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
}

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

/* 页脚 */
footer {
    background-color: var(--dark-blue);
    color: white;
    padding: 4rem 2rem 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-column {
    /* 新增footer-column样式 */
}

.footer-logo {
    margin-bottom: 1.5rem;
}

.footer-logo img {
    height: 40px;
}

.footer-about p {
    opacity: 0.8;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s;
}

.social-link:hover {
    background: var(--accent-blue);
    transform: translateY(-3px);
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 2px;
    background: var(--accent-blue);
    bottom: 0;
    left: 0;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s;
    display: flex;
    align-items: center;
}

.footer-links a:hover {
    color: var(--accent-blue);
}

.footer-links a i {
    margin-right: 8px;
    width: 16px;
}

.footer-newsletter p {
    opacity: 0.8;
    margin-bottom: 1.5rem;
}

.newsletter-form {
    display: flex;
}

.newsletter-input {
    flex: 1;
    padding: 0.8rem 1rem;
    border: none;
    border-radius: 5px 0 0 5px;
    font-size: 1rem;
}

.newsletter-btn {
    background: var(--accent-blue);
    color: white;
    border: none;
    padding: 0 1.5rem;
    border-radius: 0 5px 5px 0;
    cursor: pointer;
    transition: background 0.3s;
}

.newsletter-btn:hover {
    background: #00c0ff;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-bottom a:hover {
    color: var(--accent-blue);
}

.footer-bottom .copyright-year,
.footer-bottom .copyright-company,
.footer-bottom .copyright-text,
.footer-bottom .copyright-divider,
.footer-bottom .copyright-icp {
    margin: 0 5px;
}

.footer-bottom .copyright-divider {
    margin: 0 6px;
    opacity: 0.6;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-container {
        grid-template-columns: 1fr;
    }

    .about-image {
        order: -1;
    }

    .contact-container {
        grid-template-columns: 1fr;
    }

    .contact-info {
        order: -1;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--dark-blue);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 2rem;
        transition: left 0.3s;
        overflow-y: auto;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-column {
        margin-bottom: 2rem;
    }

    .social-links {
        justify-content: center;
    }

    .nav-links.active {
        left: 0;
    }

    .nav-links li {
        margin: 1rem 0;
        width: 90%;
    }

    /* 移动端大型菜单 */
    .mega-menu {
        position: static;
        width: 100%;
        background: rgba(0, 68, 136, 0.95);
        opacity: 0;
        max-height: 0;
        overflow: hidden;
        transition: all 0.3s ease;
    }

    .mega-dropdown.active .mega-menu {
        opacity: 1;
        max-height: 500px;
    }

    .mega-menu-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 2rem 1rem;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        background-color: rgba(0, 68, 136, 0.8);
        margin-top: 1rem;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        width: 100%;
        transform: none;
    }

    .dropdown.active .dropdown-menu {
        max-height: 300px;
    }

    .enhanced-dropdown {
        min-width: 100%;
    }

    .enhanced-dropdown a {
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        white-space: nowrap;
    }

    .enhanced-dropdown a i {
        margin-right: 8px;
        margin-bottom: 0;
    }

    /* 移动端英雄区域 */
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 2rem 1rem;
        height: auto;
        min-height: 80vh;
    }

    .hero-content {
        padding-right: 0;
        order: 2;
    }

    .hero-visual {
        order: 1;
        margin-bottom: 2rem;
    }

    .supply-chain-network {
        width: 310px;
        height: 300px;
    }

    .network-node {
        width: 60px;
        height: 60px;
    }

    .network-node i {
        font-size: 1.2rem;
    }

    .network-node span {
        font-size: 0.6rem;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .hero-stats .stat-number {
        font-size: 1.5rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .btn-outline {
        margin-left: 0;
        margin-top: 1rem;
    }

    /* 移动端技术架构 */
    .tech-architecture {
        grid-template-rows: auto;
        gap: 1rem;
    }

    .architecture-layer {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .layer-items {
        justify-content: center;
    }

    .tech-features {
        grid-template-columns: 1fr;
    }

    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .dashboard-item {
        flex-direction: column;
        text-align: center;
        padding: 1.2rem;
        min-height: auto;
        width: 100%;
    }

    .dashboard-icon {
        margin-right: 0;
        margin-bottom: 0.5rem;
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }

    .data-value {
        font-size: 1.2rem;
    }

    .data-label {
        font-size: 0.85rem;
        line-height: 1.3;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .about-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .contact-container {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .stats {
        grid-template-columns: 1fr 1fr;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .about-content h2 {
        font-size: 2.5rem;
        color: var(--dark-blue);
        margin-top: 0;
        margin-bottom: 1.5rem;
    }

    .about-content h2 .english-subtitle {
        font-size: 1.5rem;
        font-weight: normal;
        color: #666;
    }

    .about-content p {
        margin-bottom: 1.5rem;
        color: #555;
    }

    .stats {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
        margin-top: 2rem;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .about-content h2 {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 1.8rem;
        white-space: normal;
    }

    .hero-slide-text h1 {
        font-size: 1.5rem;
        white-space: normal;
        line-height: 1.3;
        word-wrap: break-word;
        overflow-wrap: break-word;
        color: #0C3285;
        text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5), 0 0 15px rgba(255, 255, 255, 0.8), 2px 2px 4px rgba(255, 255, 255, 0.6);
        -webkit-text-stroke: 1px rgba(255, 255, 255, 0.8);
        text-stroke: 1px rgba(255, 255, 255, 0.8);
    }

    .hero p {
        font-size: 1rem;
        line-height: 1.6;
        white-space: normal;
        color: #000066;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .tech .section-title h2 {
        font-size: 2rem;
    }

    .supply-chain-network {
        width: 250px;
        height: 250px;
    }

    .network-node {
        width: 50px;
        height: 50px;
    }

    .network-node i {
        font-size: 1rem;
    }

    .network-node span {
        font-size: 0.5rem;
    }

    .stats {
        grid-template-columns: 1fr;
    }

    .btn {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }

    .btn-outline {
        margin-left: 0;
        margin-top: 1rem;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 0.8rem;
        justify-items: center;
        max-width: 400px;
    }

    .dashboard-item {
        padding: 1rem;
        min-height: 85px;
        justify-content: center;
        width: 100%;
        max-width: 320px;
    }

    .dashboard-icon {
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
        margin-bottom: 0.6rem;
    }

    .data-value {
        font-size: 1.1rem;
        margin-bottom: 0.25rem;
    }

    .data-label {
        font-size: 0.8rem;
        line-height: 1.2;
        word-wrap: break-word;
    }

    .mega-menu-content {
        padding: 1.5rem 1rem;
    }

    .tech-feature {
            padding: 1.5rem;
        }

        .real-time-dashboard {
            padding: 2rem 1rem;
        }

        .btn-group {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .mobile-menu-btn {
            display: block !important;
        }
    }