/* ---------- 全局重置 & 品牌变量 ---------- */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial', 'Helvetica Neue', sans-serif;
        }

        :root {
            --primary-blue: #0055FF;
            --secondary-blue: #0040CC;
            --light-blue: #E6F0FF;
            --dark-gray: #333333;
            --medium-gray: #666666;
            --light-gray: #F8F9FA;
            --white: #FFFFFF;
            --black: #111111;
        }

        body {
            text-align: center;
            color: var(--dark-gray);
            background-color: var(--white);
        }

        /* 导航栏 (含移动端响应菜单) */
        nav {
            background-color: var(--primary-blue);
            padding: 1rem 5%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--white);
            position: sticky;
            top: 0;
            z-index: 1000;
            text-align: left;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 1.5rem;
            font-weight: bold;
        }

        .logo img {
            width: 40px;
            height: 40px;
            border-radius: 4px;
            object-fit: contain;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
        }

        .nav-links a {
            color: var(--white);
            text-decoration: none;
            font-size: 1rem;
            transition: all 0.3s ease;
            padding: 0.5rem 0;
            font-weight: 500;
        }

        .nav-links a:hover {
            color: var(--light-blue);
            text-decoration: underline;
        }

        /* 移动端菜单图标 (默认隐藏) */
        .menu-icon {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--white);
        }

        /* 英雄区 */
        .hero {
            background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
            color: var(--white);
            padding: 6rem 5%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
        }

        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            letter-spacing: 0.5px;
        }

        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin-bottom: 0;
            opacity: 0.95;
        }

        /* 通用板块样式 */
        section {
            padding: 5rem 5%;
        }

        .section-title {
            font-size: 2.5rem;
            color: var(--primary-blue);
            margin-bottom: 3rem;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            width: 100px;
            height: 4px;
            background-color: var(--secondary-blue);
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }

        /* ========= 公司概览 ========= */
        .company-overview {
            background-color: var(--white);
        }

        .company-fullname {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--dark-gray);
            margin-bottom: 2rem;
            text-align: center;
        }

        .overview-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
            max-width: 1000px;
            margin-left: auto;
            margin-right: auto;
        }

        .overview-card {
            background-color: var(--light-blue);
            color: var(--primary-blue);
            padding: 2.5rem 1.5rem;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 6px 12px rgba(0,0,0,0.08);
            transition: transform 0.3s ease;
        }

        .overview-card:hover {
            transform: translateY(-5px);
        }

        .overview-card h3 {
            font-size: 2.8rem;
            margin-bottom: 1rem;
            font-weight: bold;
        }

        /* 核心描述段落：强化居中 */
        .overview-desc,
        .overview-extra {
            max-width: 900px;
            margin-left: auto !important;
            margin-right: auto !important;
            font-size: 1.15rem;
            line-height: 1.8;
            text-align: center !important;
            display: block;
            clear: both;
        }

        .overview-desc {
            color: var(--dark-gray);
        }

        .overview-extra {
            margin-top: 1.5rem;
            color: var(--primary-blue);
            font-weight: 500;
        }

        /* 核心优势 */
        .core-advantages {
            background-color: var(--light-gray);
        }

        .advantages-list {
            max-width: 1000px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        .advantage-item {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
            background-color: var(--white);
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
            text-align: left;
        }

        .advantage-icon {
            color: var(--secondary-blue);
            font-size: 2.2rem;
            margin-top: 0.2rem;
            flex-shrink: 0;
        }

        .advantage-content h4 {
            font-size: 1.4rem;
            margin-bottom: 1rem;
            color: var(--primary-blue);
        }

        .advantage-content p {
            color: var(--medium-gray);
            line-height: 1.7;
            font-size: 1.05rem;
        }

        /* 团队区域 (图片完全展示修复) */
        .team {
            background-color: var(--white);
        }

        .team-sections {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 3rem;
            margin-bottom: 4rem;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }

        .team-card {
            background-color: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            display: flex;
            flex-direction: column;
        }

        .team-card img {
            width: 100%;
            height: auto;
            max-height: 380px;
            object-fit: contain;
            background-color: #f0f2f5;
            display: block;
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .team-card .team-overlay {
            background-color: rgba(0, 85, 255, 0.92);
            color: var(--white);
            padding: 1.5rem 2rem;
            text-align: center;
            width: 100%;
        }

        .team-card .team-overlay h4 {
            font-size: 1.6rem;
            margin-bottom: 0.8rem;
        }

        .team-card .team-overlay p {
            line-height: 1.6;
            opacity: 0.95;
            font-size: 1.05rem;
        }

        /* 核心技术能力 (flex一行) */
        .team-skills {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.5rem;
        }

        .skill-item {
            flex: 1;
            min-width: 200px;
            text-align: center;
            padding: 2rem 1.5rem;
            background-color: var(--light-blue);
            border-radius: 12px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }

        .skill-item i {
            font-size: 2.2rem;
            color: var(--primary-blue);
            margin-bottom: 1.2rem;
        }

        .skill-item h5 {
            font-size: 1.2rem;
            margin-bottom: 0.8rem;
            color: var(--primary-blue);
        }

        /* 产品展示 */
        .products {
            background-color: var(--light-gray);
        }

        .product-gallery {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }

        .product-item {
            display: block;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 6px 12px rgba(0,0,0,0.08);
            transition: transform 0.3s ease;
            background-color: #000;
        }

        .product-item:hover {
            transform: scale(1.02);
        }

        .product-item img {
            width: 100%;
            height: 280px;
            object-fit: contain;
            background-color: #111;
            display: block;
        }

        /* 产品描述文案 —— 强制居中 */
        .product-desc {
            max-width: 800px;
            margin: 1.5rem auto 1.5rem auto !important;
            text-align: center !important;
            font-size: 1.15rem;
            color: var(--dark-gray);
            line-height: 1.8;
            display: block;
            clear: both;
        }

        .view-more-btn {
            display: inline-block;
            margin-top: 1rem;
            padding: 1rem 2.5rem;
            background-color: var(--primary-blue);
            color: var(--white);
            text-decoration: none;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 8px rgba(0,85,255,0.2);
        }

        .view-more-btn:hover {
            background-color: var(--secondary-blue);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,85,255,0.3);
        }

        /* 合作伙伴 */
        .partners {
            background-color: var(--white);
        }

        .partner-card {
            max-width: 1000px;
            margin: 0 auto;
            background-color: var(--light-gray);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
        }

        .partner-card img {
            width: 100%;
            height: auto;
            max-height: 420px;
            object-fit: contain;
            background-color: #eef2f5;
            display: block;
        }

        .partner-desc {
            padding: 2.5rem;
            text-align: center;
        }

        .partner-desc h4 {
            font-size: 1.6rem;
            margin-bottom: 1.2rem;
            color: var(--primary-blue);
        }

        /* ========= 解决方案区域 - 背景改为浅灰色（非蓝色），卡片白色 ========= */
        .solutions {
            background-color: var(--light-gray);  /* 浅灰色背景，不再是蓝色渐变 */
            color: var(--dark-gray);
            padding: 5rem 5%;
        }

        .solutions .section-title {
            color: var(--primary-blue);  /* 标题改为品牌蓝，与浅色背景协调 */
        }

        .solutions .section-title::after {
            background-color: var(--secondary-blue);
        }

        .solutions-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.5rem;
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
        }

        /* 卡片样式：白色背景，深色文字，蓝色图标 */
        .solution-item {
            flex: 1;
            min-width: 160px;
            padding: 2rem 1.5rem;
            background-color: var(--white);
            border-radius: 16px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.08);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            color: var(--dark-gray);
        }

        .solution-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.12);
        }

        .solution-item i {
            font-size: 2.5rem;
            margin-bottom: 1.2rem;
            color: var(--primary-blue);
        }

        .solution-item h4 {
            font-size: 1.2rem;
            margin-bottom: 0.8rem;
            color: var(--primary-blue);
            font-weight: 600;
        }

        .solution-item p {
            font-size: 0.95rem;
            color: var(--medium-gray);
            line-height: 1.5;
        }

        /* 定制化服务 */
        .customized-services {
            background-color: var(--white);
        }

        .custom-service-header {
            max-width: 900px;
            margin: 0 auto 3rem;
            text-align: center;
        }

        .custom-service-header h3 {
            font-size: 1.9rem;
            color: var(--primary-blue);
            margin-bottom: 1.2rem;
        }

        .custom-service-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            max-width: 1000px;
            margin: 0 auto;
        }

        .custom-service-card {
            background-color: var(--light-blue);
            padding: 2.5rem 2rem;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 6px 12px rgba(0,0,0,0.07);
            transition: transform 0.3s ease;
        }

        .custom-service-card:hover {
            transform: translateY(-5px);
        }

        .custom-service-card i {
            font-size: 2.8rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
        }

        /* 定制化价值 */
        .customization {
            padding: 5rem 5%;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 4rem;
            background-color: var(--light-gray);
            justify-content: center;
        }

        .customization-text {
            flex: 1;
            min-width: 300px;
            max-width: 600px;
            text-align: center;
        }

        .customization-text h3 {
            font-size: 2.1rem;
            color: var(--primary-blue);
            margin-bottom: 1.8rem;
        }

        .customization-visual .letter-m {
            font-size: 12rem;
            font-weight: bold;
            color: var(--primary-blue);
            opacity: 0.9;
        }

        footer {
            background-color: var(--primary-blue);
            color: var(--white);
            padding: 2rem 5%;
            text-align: center;
        }

        /* ========= 响应式深度优化 (含移动端菜单) ========= */
        @media (max-width: 992px) {
            .hero h1 { font-size: 2.8rem; }
            .section-title { font-size: 2.2rem; }
        }

        @media (max-width: 768px) {
            .hero h1 { font-size: 2.4rem; }
            .hero p { font-size: 1.1rem; }
            .section-title { font-size: 2rem; }
            .team-sections { grid-template-columns: 1fr; gap: 2rem; }
            .advantage-item { flex-direction: column; align-items: center; text-align: center; }
            .product-gallery { grid-template-columns: 1fr; gap: 1.5rem; }
            .product-item img { height: 260px; }
            .customization-visual .letter-m { font-size: 8rem; }
            .team-card img { max-height: 320px; }
        }

        /* 移动端导航菜单 */
        @media (max-width: 650px) {
            .menu-icon { display: block; }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--primary-blue);
                flex-direction: column;
                gap: 0;
                padding: 1rem 0;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
                z-index: 999;
            }
            .nav-links.active { display: flex; }
            .nav-links a {
                padding: 1rem 2rem;
                text-align: center;
                width: 100%;
                border-top: 1px solid rgba(255,255,255,0.15);
            }
            .nav-links a:hover { background-color: rgba(0,0,0,0.1); text-decoration: none; }
        }

        @media (max-width: 550px) {
            .hero { padding: 4rem 5%; }
            section { padding: 3rem 5%; }
            .overview-cards { grid-template-columns: 1fr; gap: 1.2rem; }
            .team-skills { flex-direction: column; gap: 1rem; }
            .skill-item { width: 100%; }
            .solutions-grid { flex-direction: column; gap: 1rem; }
            .solution-item { width: 100%; }
            .custom-service-cards { grid-template-columns: 1fr; }
            .product-item img { height: 220px; }
            .partner-card img { max-height: 260px; }
            .overview-desc, .overview-extra { font-size: 1rem; }
        }