* {
    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;
    }

.containersolutions {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 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;
}

.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: 18px;
        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: 70px 0;
    background: white;
}

    .case-section h2 {
        text-align: center;
        font-size: 30px;
        margin-bottom: 40px;
    }

/* 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;
	cursor: pointer;
}
    .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: 80px 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;
		cursor: pointer;
    }

        .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: 12px;
}

.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;

}
    .func-card p{
        font-size:16px;
        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;
    }
        .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;
}

    .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, .func-grid {
        grid-template-columns: 1fr;
    }

    .banner {
        background: #000;
    }
}