* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f7fcff;
        }
        header {
            background: #ffffff;
            box-shadow: 0 2px 15px rgba(0,100,200,0.08);
            position: sticky;
            top: 0;
            z-index: 99;
        }
        nav {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            gap: 35px;
            height: 70px;
            align-items: center;
            padding: 0 20px;
        }
        nav a {
            text-decoration: none;
            color: #2d6cb8;
            font-size: 16px;
            font-weight: 500;
            transition: 0.3s;
        }
        nav a:hover {
            color: #165dff;
            transform: translateY(-2px);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .banner {
            width: 100%;
            height: 500px;
            background: url('https://picsum.photos/1920/500') no-repeat center center;
            background-size: cover;
            display: flex;
            align-items: center;
            position: relative;
            margin-bottom: 60px;
        }
        .banner::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            background: rgba(230,244,255,0.85);
        }
        .banner .container {
            position: relative;
            z-index: 2;
        }
        .banner-text {
            width: 55%;
        }
        .banner h1 {
            font-size: 42px;
            color: #165dff;
            margin-bottom: 20px;
            font-weight: 700;
            line-height: 1.3;
        }
        .banner p {
            font-size: 19px;
            color: #333;
        }
        section h2 {
            font-size: 28px;
            color: #165dff;
            margin-bottom: 35px;
            text-align: center;
            position: relative;
            font-weight: 600;
        }
        section h2::after {
            content: "";
            width: 60px;
            height: 4px;
            background: #6fb2ff;
            border-radius: 2px;
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
        }
        section h3 {
            font-size: 20px;
            color: #2d6cb8;
            margin: 15px 0 10px;
            font-weight: 600;
        }
        .card {
            background: #fff;
            border-radius: 16px;
            padding: 25px;
            box-shadow: 0 4px 20px rgba(0,100,200,0.06);
            transition: 0.3s;
        }
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,100,200,0.12);
        }
        ul {
            margin-left: 22px;
            color: #444;
        }
        li {
            margin-bottom: 8px;
        }
        section {
            margin-bottom: 80px;
        }
        .section1 .value-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .value-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }
        .value-icon {
            width: 56px;
            height: 56px;
            flex-shrink: 0;
            background: #e6f4ff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #165dff;
        }
        .section2 .advantage-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .advantage-card {
            text-align: center;
            padding: 30px 20px;
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 4px 15px rgba(0,100,200,0.06);
            transition: 0.3s;
        }
        .advantage-card h4 {
            font-size: 18px;
            color: #165dff;
            margin-bottom: 12px;
        }

        /* 权威LOGO 无缝滚动 */
        .logo-section {
            padding: 40px 0;
            overflow: hidden;
            background: #fff;
            border-radius: 16px;
            margin-bottom: 80px;
        }
        .logo-scroll-container {
            width: 100%;
            overflow: hidden;
        }
        .logo-scroll-track {
            display: flex;
            width: max-content;
            animation: logoScroll 35s linear infinite;
        }
        .logo-box {
            width: 140px;
            height: 70px;
            margin: 0 25px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f8f9fa;
            border-radius: 10px;
        }
        .logo-box img {
            max-width: 85%;
            max-height: 80%;
            object-fit: contain;
        }
        @keyframes logoScroll {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        .section4 .module-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 25px;
        }
        .tab-wrap {
            display: flex;
            gap: 30px;
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,100,200,0.06);
            padding: 25px;
        }
        .tab-nav {
            width: 220px;
            flex-shrink: 0;
        }
        .tab-nav-item {
            padding: 16px 20px;
            margin-bottom: 8px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.3s;
            text-align: center;
            font-weight: 500;
            color: #444;
        }
        .tab-nav-item:hover,
        .tab-nav-item.active {
            background: #165dff;
            color: #fff;
        }
        .tab-content {
            flex: 1;
        }
        .tab-content-item {
            display: none;
        }
        .tab-content-item.active {
            display: block;
        }

        /* 行业展示 */
        .section6 .industry-list {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 25px;
        }
        .industry-item {
            width: 155px;
            text-align: center;
        }
        .industry-item span {
            display: block;
            font-size: 18px;
            color: #165dff;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .industry-item img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,80,200,0.1);
        }

        /* 服务套餐 */
        .section7 .price-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .price-card {
            background: #fff;
            border-radius: 16px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: 0 4px 15px rgba(0,100,200,0.08);
            transition: 0.3s;
        }
        .price-card h4 {
            font-size: 20px;
            color: #165dff;
            margin-bottom: 15px;
        }
        .price-tag {
            font-size: 22px;
            font-weight: 700;
            color: #ff6b35;
            margin: 15px 0;
        }
        .price-list {
            text-align: left;
            padding-left: 10px;
        }
        .price-list li {
            font-size: 14px;
            color: #555;
            line-height: 1.7;
        }

        .faq-section {
            padding: 50px 0;
        }
        .faq-section h2 {
            margin-bottom: 35px;
        }
        .faq-list {
            max-width: 1000px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,100,200,0.08);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .faq-item.active {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(0,100,200,0.12);
        }
        .faq-toggle {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 22px 24px;
            border: none;
            background: transparent;
            cursor: pointer;
            font-size: 16px;
            color: #1a3253;
            font-weight: 600;
            text-align: left;
        }
        .faq-toggle:hover {
            background: rgba(22,93,255,0.05);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #eaf3ff;
            color: #165dff;
            font-size: 20px;
            transition: transform 0.25s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            display: none;
            padding: 0 24px 20px;
            color: #555;
            line-height: 1.8;
            border-top: 1px solid #f0f4fb;
            animation: fadeIn 0.25s ease;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-answer p {
            margin: 0;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-4px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* 页脚 */
        footer {
            background: #e6f4ff;
            padding: 40px 0;
            color: #2d6cb8;
            margin-top: 50px;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 40px;
            font-size: 16px;
        }

        @media (max-width: 768px) {
            .section1 .value-grid,
            .section2 .advantage-grid,
            .section4 .module-grid,
            .section7 .price-grid {
                grid-template-columns: 1fr;
            }
            .tab-wrap {
                flex-direction: column;
            }
            .industry-list {
                justify-content: center;
            }
        }