* {
    margin: 0;
    padding: 0;

    scroll-behavior: smooth;
    font-family: "Microsoft YaHei", Arial, sans-serif;
}
.three {
    color: #2563eb;
    font-size: 14px;
    line-height: 36px;
    font-weight: 600;
    margin-left: 15px;
}
    .three:hover{
        color:#f64b00
    }
    body {
        background-color: #f9fafb;
        color: #1f2937;
        line-height: 1.6;
    }
@media (min-width:641px) {
    .containersolutions {
        max-width: 1320px;
        margin: 0 auto;
        padding: 0 20px;
        width: 80%
    }

}
    
    @media (max-width:640px) {
        .containersolutions {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .pcdiannao{
            display:none
        }
        .func-grid {
            grid-template-columns: repeat(2,1fr) !important;
        }
    }
    /* Banner 左黑右透明 + 场景背景 */
.banner {
    position: relative;
    min-height: 450px;
    display: flex;
    align-items: center;
    background-position: center;
    color: white;
    padding: 60px 0;
    margin-top: 50px;
}

    .banner-wrapper {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .banner-left {
        width: 52%;
        z-index: 2;
    }

        .banner-left .small-title {
            font-size: 22px;
            color: #f64b00;
            margin-bottom: 10px;
            font-weight: 600
        }

        .banner-left h1 {
            font-size: 42px;
            line-height: 1.2;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .banner-left .desc {
            font-size: 17px;
            color: rgba(255,255,255,0.9);
            margin-bottom: 30px;
        }

    .banner-btns {
        display: flex;
        gap: 16px;
        align-items: center;
        flex-wrap: wrap;
        margin-top: 20px;
    }

    .btns {
        padding: 12px 24px;
        border-radius: 8px;
        font-size: 16px;
        font-weight: 500;
        border: none;
        cursor: pointer;
        transition: 0.25s;
    }

    .reg {
        margin-top: 15px;
    }

    .btns-login {
        padding: 6px 15px;
        border-radius: 8px;
        font-size: 14px;
        font-weight: 500;
        border: none;
        cursor: pointer;
        transition: 0.25s;
    }

    .btns-primary {
        background: #0F52BA;
        color: white;
    }

        .btns-primary:hover {
            background: #0b4090;
        }

    .btns-success {
        background: #10b981;
        color: white;
    }

        .btns-success:hover {
            background: #059669;
        }

    .wechat-link {
        color: rgba(255,255,255,0.6);
        font-size: 15px;
        text-decoration: none;
        margin-left: 10px;
    }

        .wechat-link:hover {
            color: white;
        }

    /* 案例滚动 */
    .case-section {
        padding:30px 0;
        background: white;
    }

        .case-section h2 {
            text-align: center;
            font-size: 30px;
            margin-bottom: 20px;
        }

    /* 外层容器：隐藏溢出 + 宽度 */
    .logo-scroll {
        width: 100%;
        overflow: hidden; /* 关键：隐藏滚动出去的内容 */
        white-space: nowrap;
    }

    /* 滚动层：宽度自动撑开，用于动画 */
    .scroll-wrapper {
        display: flex;
        align-items: center;
        gap: 30px; /* logo 之间间距，可改 */
        width: max-content;
        animation: scroll 20s linear infinite; /* 自动滚动动画 */
    }

        /* 鼠标悬停暂停 */
        .scroll-wrapper:hover {
            animation-play-state: paused;
        }

    /* 单个 Logo 样式 */
    .logo-item {
        display: inline-block;
        cursor: pointer
    }

        .logo-item img {
            height: 110px; /* 控制logo高度 */
            width: auto;
            display: block;
        }

    /* 无限滚动动画 */
    @keyframes scroll {
        0% {
            transform: translateX(0);
        }

        100% {
            transform: translateX(-50%);
        }
    }
    /* 流动边框动画 */
    @keyframes border-flow {
        0% {
            background-position: 0% 50%;
        }

        50% {
            background-position: 100% 50%;
        }

        100% {
            background-position: 0% 50%;
        }
    }

    .flow-border {
        position: relative;
        border-radius: 20px;
        overflow: hidden;
    }

        .flow-border::before {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            background: linear-gradient(90deg, #4f46e5, #06b6d4, #10b981, #4f46e5);
            background-size: 300% 100%;
            z-index: -1;
            animation: border-flow 3s linear infinite;
        }

    /* AI+基建 三个模块不同背景 */

    /* 主体板块：紧凑间距 */
    .ai-section {
        padding: 50px 20px;
        background: #f9fafc;
        overflow: hidden;
    }

    .liucheng {
        width: 98%;
        margin: 0 auto;
        text-align: center;
    }

        .liucheng img {
            width: auto;
            margin-top: 20px
        }
    /* 容器居中 */
    .containersolutions {
        max-width: 1280px;
        margin: 0 auto;
    }

    /* 标题区域：紧凑 */
    .ai-title {
        text-align: center;
        margin-bottom: 35px;
    }

        .ai-title h2 {
            font-size: 36px;
            font-weight: 700;
            color: #1e293b;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .ai-title p {
            font-size: 16px;
            line-height: 1.6;
            color: #64748b;
            max-width: 850px;
            margin: 0 auto;
        }

    /* 卡片容器：紧凑排列 */
    .ai-card-wrapper {
        display: flex;
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
    }

    /* 统一卡片外框 */
    .flow-border {
        position: relative;
        border-radius: 12px;
        overflow: hidden;
    }

    /* 卡片基础样式：紧凑高度 */
    .ai-card {
        width: 300px;
        padding: 28px 24px;
        border-radius: 12px;
        box-shadow: 0 6px 16px rgba(0,0,0,0.06);
        transition: 0.3s ease;
        min-height: 100px;
    }

        .ai-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }

        .ai-card h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .ai-card p {
            font-size: 15px;
            line-height: 1.55;
            color: #fff;
        }

    /* ==========================
   每个卡片 独立亮色主题
=========================== */
    /* 卡片1：青绿色 */
    .ai-card1 {
        background: #10b981;
    }

        .ai-card1 h3 {
            color: #ffffff;
        }

    /* 卡片2：亮蓝色 */
    .ai-card2 {
        background: #2563eb;
    }

        .ai-card2 h3 {
            color: #ffffff;
        }

    /* 卡片3：橙红色 */
    .ai-card3 {
        background: #f59e0b;
    }

        .ai-card3 h3 {
            color: #ffffff;
        }

    /* 移动端适配：依然紧凑 */
    @media (max-width: 768px) {
        .ai-section {
            padding: 40px 15px;
        }

        .ai-title h2 {
            font-size: 28px;
        }

        .ai-card {
            width: 100%;
        }
    }
    /* 解决方案 Tab */
    .solution-section {
        padding: 30px 0;
        background: white;
    }

    .solution-title {
        text-align: center;
        font-size: 32px;
        margin-bottom: 40px;
    }

    .tab-navsolutions {
        display: flex;
        justify-content: center;
        gap: 12px;
        margin-bottom: 50px;
        flex-wrap: wrap;
        border-bottom: 1px solid #dddddd;
        padding-bottom: 15px;
    }

        .tab-navsolutions button {
            padding: 10px 22px;
            border-radius: 8px;
            border: none;
            background: #f3f4f6;
            cursor: pointer;
            font-size: 16px;
        }

            .tab-navsolutions button:hover {
                background: #f3f8ff
            }

            .tab-navsolutions button.active {
                background: #0F52BA;
                color: white;
            }

    .tab-contentsolutions {
        display: none;
    }

        .tab-contentsolutions.active {
            display: block;
            animation: fade 0.4s;
            background: #fbfeff !important
        }

    @keyframes fade {
        from {
            opacity: 0;
        }

        to {
            opacity: 1;
        }
    }

    .tab-inner {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 40px;
        align-items: center;
    }

        .tab-inner img {
            width: 100%;
            border-radius: 16px;
            transition: 0.4s;
        }

            .tab-inner img:hover {
                transform: scale(1.03);
            }

    .tab-text h3 {
        font-size: 26px;
        color: #0F52BA;
        margin-bottom: 16px;
    }

    .tab-text p {
        color: #0F52BA;
        margin-bottom: 20px;
        font-size: 16px;
    }

    .tab-text li {
        list-style: none;
        margin-bottom: 15px;
        color: #6b7280;
        font-size: 15px;
    }

    /* 核心功能 多色卡片 */
    .func-section {
        padding: 80px 0;
        background: #f9fafb;
    }

    .func-title {
        text-align: center;
        font-size: 32px;
        margin-bottom: 22px;
    }

    .func-desc {
        text-align: center;
        color: #6b7280;
        margin-bottom: 40px;
    }

    .func-grid {
        display: grid;
        grid-template-columns: repeat(3,1fr);
        gap: 20px;
    }

    .func-card {
        background: white;
        padding: 24px;
        border-radius: 16px;
        transition: 0.3s;
        text-align: center;
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        padding: 20px 10px;
    }

        .func-card p {
            font-size: 15px;
            padding-bottom: 15px;
        }

        .func-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 16px rgba(0,0,0,0.06);
        }

        .func-card h3 {
            font-size: 19px;
            margin-bottom: 8px;
        }

        .func-card p {
            color: #6b7280;
            margin-bottom: 12px;
        }

        .func-card a {
            text-decoration: none;
            font-weight: 500;
            background: #2563eb;
            padding: 5px 15px;
            border-radius: 25px;
            color: #fff;
        }

            .func-card a:hover {
                background: #0F52BA
            }


    /* FAQ 手风琴 */
    .faq-section {
        padding: 80px 0;
        background: white;
    }

    .faq-title {
        text-align: center;
        font-size: 32px;
        margin-bottom: 50px;
    }

    .faq-item {
        border: 1px solid #e5e7eb;
        border-radius: 10px;
        margin-bottom: 12px;
        overflow: hidden;
    }

    .faq-question {
        padding: 18px 24px;
        background: #f9fafb;
        width: 100%;
        text-align: left;
        border: none;
        font-size: 16px;
        font-weight: 500;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .faq-answer {
        padding: 0 24px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease;
        color: #4b5563;
        line-height: 30px;
    }

        .faq-answer.show {
            padding: 16px 24px;
            max-height: 1000px;
        }

    .arrow {
        transition: 0.3s;
    }

        .arrow.rotate {
            transform: rotate(180deg);
        }

    table {
        width: 100%;
        border-collapse: collapse;
        margin-top: 16px;
    }

        table td, table th {
            border: 1px solid #e5e7eb;
            padding: 10px;
            text-align: left;
        }

        table th {
            background: #f3f4f6;
        }



    @media (max-width:768px) {
        .banner-wrapper {
            flex-direction: column;
        }

        .banner-left {
            width: 100%;
        }

        .ai-card-wrapper, .tab-inner {
            grid-template-columns: 1fr;
        }

        .banner {
            background: #000;
        }
    }