* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: "Microsoft Yahei", sans-serif;
            color: #333;
            background-color: #fff;
            padding-top: 60px;
        }
        .wrapper {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: 80px 0;
        }
        .section-gray {
            background-color: #f8fafc;
        }
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        .section-title h2 {
            font-size: 32px;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: "";
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 3px;
            background-color: #165DFF;
        }
        .section-title p {
            font-size: 15px;
            color: #666;
            margin-top: 20px;
        }
        .nav-container {
            width: 100%;
            background-color: #165DFF;
            position: fixed;
            top: 0;
            left: 0;
            z-index: 999;
        }
        .nav-wrapper {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            padding: 0 20px;
        }
        .logo-box {
            display: flex;
            align-items: center;
            height: 100%;
            gap: 10px;
        }
        .logoimg {
            height: 38px;
            width: auto;
            object-fit: contain;
        }
        .logo {
            color: #ffffff;
            font-size: 20px;
            font-weight: 600;
            text-decoration: none;
            line-height: 1;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            height: 100%;
        }
        .nav-item {
            position: relative;
            height: 100%;
        }
        .nav-item > a {
            display: flex;
            align-items: center;
            height: 100%;
            padding: 0 24px;
            color: #ffffff;
            text-decoration: none;
            font-size: 16px;
            transition: background-color 0.2s linear;
        }
        .nav-item > a:hover {
            background-color: #0E42D2;
        }
     
        .nav-item:hover .submenu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
       
      .submenu {
    position: absolute;
    top: 100%;
    left: 60%;
    transform: translateX(-50%) translateY(8px);
    min-width: 200px;
    background-color: #ffffff;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 999;
    border: 1px solid #e8eef7;

    display: grid;
    grid-template-columns: 1fr;
    justify-items: start;
}

.nav-item:hover .submenu {
    transform: translateX(-50%) translateY(0);
}

.submenu.two-col {
    grid-template-columns: 1fr 1fr;
    min-width: 420px;
    justify-items: start;
}

.submenu.three-col {
    grid-template-columns: 1fr 1fr 1fr;
    min-width: 630px;
    justify-items: start;
}

.submenu li {
    width: 100%;
}

.submenu li a {
    display: block;
    padding: 12px 20px;
    color: #333333;
    text-decoration: none;
    font-size: 14px;
    border-bottom: 1px solid #f0f2f5;
    transition: all 0.2s linear;
    white-space: nowrap;
    text-align: left;
}
.submenu li:last-child a {
    border-bottom: none;
}
.submenu li a:hover {
    background-color: #f5f8ff;
    color: #165DFF;
    padding-left: 26px;
}

        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background-color: #ffffff;
            transition: all 0.3s ease;
        }
        .banner-container {
            width: 100%;
            background-color: #0C234B;
            background-image: 
                linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px),
                linear-gradient(135deg, #0C234B 0%, #163A72 55%, #1E4A8F 100%);
            background-size: 40px 40px, 40px 40px, 100% 100%;
            background-repeat: repeat, repeat, no-repeat;
            position: relative;
            overflow: hidden;
        }
        .banner-container::before {
            content: "";
            position: absolute;
            right: -180px;
            top: -120px;
            width: 550px;
            height: 550px;
            background: linear-gradient(135deg, rgba(22,93,255,0.18) 0%, transparent 70%);
            transform: rotate(30deg);
        }
        .banner-container::after {
            content: "";
            position: absolute;
            right: 120px;
            bottom: -150px;
            width: 320px;
            height: 320px;
            border: 1px solid rgba(255,255,255,0.08);
            transform: rotate(45deg);
        }
        .banner-wrapper {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            height: 380px;
            display: flex;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .banner-content {
            color: #ffffff;
            max-width: 900px;
        }
        .banner-title {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 20px;
            padding-left: 18px;
            border-left: 4px solid #165DFF;
        }
        .banner-subtitle {
            font-size: 16px;
            line-height: 1.9;
            opacity: 0.85;
            margin-bottom: 36px;
            color: #E0E8F5;
        }
        .banner-btn {
            display: inline-block;
            padding: 14px 42px;
            background-color: #165DFF;
            color: #ffffff;
            text-decoration: none;
            font-size: 16px;
            font-weight: 500;
            transition: all 0.25s ease;
        }
        .banner-btn:hover {
            background-color: #0E42D2;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(22,93,255,0.35);
        }

        .advantage-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .advantage-item {
            text-align: left;
            padding: 36px 28px;
            background-color: #fff;
            border: 1px solid #eef2f7;
            transition: all 0.3s ease;
        }
        .advantage-item:hover {
            border-color: #165DFF;
            background-color: #f8fbff;
        }
        .advantage-num {
            font-size: 32px;
            font-weight: 700;
            color: #165DFF;
            margin-bottom: 16px;
            line-height: 1;
        }
        .advantage-item h3 {
            font-size: 18px;
            margin-bottom: 12px;
            color: #1a1a1a;
            font-weight: 600;
        }
        .advantage-item p {
            font-size: 14px;
            color: #666;
            line-height: 1.7;
        }
        .business-group {
            margin-bottom: 60px;
            
        }
        .business-group:last-child {
            margin-bottom: 0;
        }
        .group-title {
            font-size: 22px;
            font-weight: 600;
            color: #1a1a1a;
            margin-bottom: 24px;
            padding-left: 12px;
            border-left: 4px solid #165DFF;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .group-title a {
            font-size: 14px;
            color: #165DFF;
            text-decoration: none;
            font-weight: normal;
        }
        .group-title a:hover {
            text-decoration: underline;
        }
        .business-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .business-card {
            background-color: #fff;
            overflow: hidden;
            border: 1px solid #eef2f7;
            transition: all 0.3s ease;
        }
        .business-card:hover {
            border-color: #165DFF;
            transform: translateY(-4px);
            box-shadow: 0 8px 20px rgba(22,93,255,0.08);
        }
        .business-cover {
            width: 100%;
            aspect-ratio: 1 / 1;
            object-fit: cover;
            display: block;
            background-color: #f0f5ff;
        }
        .business-info {
            padding: 18px;
        }
        .business-info h3 {
            font-size: 15px;
            margin-bottom: 8px;
            color: #1a1a1a;
            transition: color 0.2s ease;
            font-weight: 600;
            line-height: 1.4;
        }
        .business-card:hover .business-info h3 {
            color: #165DFF;
        }
        .business-info p {
            font-size: 13px;
            color: #666;
            line-height: 1.6;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

       .partner-section {
            background-color: #f8f9fa;
        }
        .wrapper {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-title h2 {
            font-size: 36px;
            color: #333;
            margin-bottom: 12px;
            font-weight: 700;
        }
        .section-title p {
            font-size: 16px;
            color: #666;
        }
        .partner-category {
            padding-bottom: 40px;
        }
        .partner-category h3 {
            font-size: 20px;
            color: #222;
            margin-bottom: 20px;
            padding-left: 12px;
            border-left: 4px solid #2563eb;
        }
        .partner-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 15px;
        }
        .partner-item {
            padding: 14px 20px;
            background: #fff;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
            font-size: 15px;
            color: #444;
            text-align: center;
            transition: all 0.3s ease;
        }
        .partner-item:hover {
            box-shadow: 0 4px 16px rgba(0,0,0,0.1);
            transform: translateY(-2px);
        }
        .news-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }
        .news-column {
            background-color: #fff;
            border: 1px solid #eef2f7;
        }
        .news-column-title {
            padding: 18px 24px;
            border-bottom: 1px solid #eef2f7;
            font-size: 18px;
            font-weight: 600;
            color: #1a1a1a;
            border-left: 4px solid #165DFF;
            padding-left: 20px;
        }
        .news-list {
            padding: 0 24px;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 0;
            border-bottom: 1px dashed #e2e8f0;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item::before {
            content: "";
            width: 8px;
            height: 8px;
            background-color: #165DFF;
            flex-shrink: 0;
        }
        .news-item-title {
            flex: 1;
            font-size: 15px;
            color: #1a1a1a;
            text-decoration: none;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color 0.2s ease;
        }
        .news-item-title:hover {
            color: #165DFF;
        }
        .news-item-time {
            font-size: 13px;
            color: #999;
            flex-shrink: 0;
        }
        .footer {
            background-color: #0C234B;
            color: #E0E8F5;
            padding-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 60px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 18px;
            margin-bottom: 24px;
            font-weight: 600;
        }
        .footer-about p {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 16px;
            color: #E0E8F5;
        }
        .footer-nav {
            list-style: none;
        }
        .footer-nav li {
            margin-bottom: 12px;
        }
        .footer-nav li a {
            color: #E0E8F5;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s ease;
        }
        .footer-nav li a:hover {
            color: #165DFF;
        }
        .footer-contact p {
            font-size: 14px;
            margin-bottom: 12px;
            line-height: 1.8;
            color: #E0E8F5;
        }
        .footer-copyright a  {
            text-align: center;
            text-decoration: none;
            padding: 20px 0;
            font-size: 13px;
            color: #8a9ab5;
        }
        .footer-copyright {
            text-align: center;
            padding: 20px 0;
            font-size: 13px;
            color: #8a9ab5;
        }
  /* Logo城市分站下拉 - 点击版 三列布局 */
.logo-dropdown-wrap {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}
.city-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    min-width: 320px;
    background: #fff;
    list-style: none;
    border: 1px solid #e8eef7;
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 8px);
    transition: all 0.2s ease;
    z-index: 1000;
    max-height: 340px;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.logo-dropdown-wrap.active .city-dropdown {
    opacity: 1;
    visibility: visible;
   transform: translate(-50%, 0);
}
.city-dropdown li a {
    display: block;
    padding: 10px 18px;
    color: #333;
    text-decoration: none;
    font-size: 14px;
    white-space: nowrap;
    transition: 0.2s;
}
.city-dropdown li a:hover {
    background-color: #f5f8ff;
    color: #165DFF;
}


        @media (max-width: 768px) {
        
            body {
                padding-top: 60px;
            }
            .section {
                padding: 32px 0;
            }
            .section-title {
                margin-bottom: 24px;
            }
            .section-title h2 {
                font-size: 22px;
            }
            .section-title p {
                font-size: 13px;
                margin-top: 16px;
            }

            .hamburger {
                display: flex;
            }
            .nav-menu {
                position: absolute;
                top: 60px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background-color: #165DFF;
                height: auto;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
            }
            .nav-menu.active {
                max-height: 1000px;
            }
            .nav-item {
                width: 100%;
                height: auto;
                border-bottom: 1px solid #2b6eff;
            }
            .nav-item > a {
                padding: 16px 20px;
                justify-content: space-between;
            }
            .nav-item.has-sub > a::after {
                content: "+";
                font-size: 18px;
            }
            .nav-item.has-sub.active > a::after {
                content: "-";
            }
            .nav-item:hover .submenu {
    transform: translateX(-0%) translateY(0);
}
        .submenu,
    .submenu.two-col,
    .submenu.three-col {
        display: grid;

        min-width: 100%;
        left: 0;
        transform: none;
        
          grid-template-columns: 1fr 1fr 1fr;

    justify-items: start;
    }

    .submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        max-height: 0;
        overflow: hidden;
        border: none;
        background-color: #2F73FF;
        transition: max-height 0.3s ease;
        width: 100%;
    }
    .nav-item.active .submenu {
        max-height: 100%;
         
    }
    .submenu li a {
        color: #ffffff;
        border-bottom:0;
        padding-left: 10px;
        white-space: normal;
    }
    .submenu li a:hover {
        background-color: #3D81FF;
        color: #ffffff;
        padding-left: 14px;
    }
            .logoimg {
                height: 32px;
            }
            .logo {
                font-size: 18px;
            }
            .banner-wrapper {
                height: 120px;
            }
            .banner-title {
                font-size: 20px;
                padding-left: 12px;
                border-left-width: 3px;
                margin-bottom: 20px;
            }
            .banner-subtitle {
                display: none;
            }
            .banner-btn {
                margin-left: 30%;
                padding: 8px 24px;
                font-size: 13px;
            }
            .banner-container::before,
            .banner-container::after {
                display: none;
            }
            .banner-container {
                background-size: 30px 30px, 30px 30px, 100% 100%;
            }
            .advantage-list {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                padding: 0 10px;
            }
            .advantage-item {
                aspect-ratio: 1 / 1;
                border-radius: 0;
                padding: 0;
                display: flex;
                flex-direction: column;
                align-items: center;
                justify-content: center;
                text-align: center;
            }
            .advantage-item p {
                display: none;
            }
            .advantage-num {
                font-size: 24px;
                margin-bottom: 8px;
            }
            .advantage-item h3 {
                font-size: 13px;
                margin-bottom: 0;
                padding: 0 8px;
            }
            .business-group {
                margin-bottom: 20px;
            }
            .group-title {
                font-size: 17px;
                margin-bottom: 12px;
            }
            .business-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .business-info {
                padding: 10px 12px;
            }
            .business-info h3 {
                font-size: 13px;
                margin-bottom: 0;
            }
            .business-info p {
                display: none;
            }
            .partner-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .partner-item {
                height: 60px;
                font-size: 13px;
            }
            .news-wrap {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-column-title {
                padding: 14px 20px;
                font-size: 16px;
            }
            .news-list {
                padding: 0 20px;
            }
            .news-item {
                padding: 12px 0;
            }
            .news-item-title {
                white-space: normal;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
                font-size: 14px;
            }
            .news-item-time {
                font-size: 12px;
            }
            .footer {
                padding-top: 0;
            }
            .footer-grid {
                display: none;
            }
            .footer-copyright {
                padding: 16px 0;
                font-size: 12px;
            }
        }