*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    font-family:"PingFang SC","Microsoft YaHei",sans-serif;
    color:#1f2937;
    background:#f5f7fb;
    line-height:1.7;
}

a{
    text-decoration:none;
    color:inherit;
}

.container{
    width:92%;
    max-width:1400px;
    margin:0 auto;
}

.header{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    z-index:999;
    background:#fff;
    box-shadow:0 2px 12px rgba(0,0,0,.08);
}

.navbar{
    height:80px;
    display:flex;
    align-items:center;
    justify-content:space-between;
}

.logo{
    color:#0f172a;
    font-size:22px;
    font-weight:700;
    display:flex;
    align-items:center;
}

.logo span:first-of-type{
    color:#0f172a;
}

.nav{
    display:flex;
    gap:32px;
    align-items:center;
}

.nav a{
    color:#334155;
    font-size:15px;
    transition:.3s;
    padding:8px 0;
    position:relative;
}

.nav a:hover,
.nav a.active{
    color:#1976ff;
}

.nav a.active::after{
    content:'';
    position:absolute;
    bottom:0;
    left:0;
    width:100%;
    height:2px;
    background:#4ea1ff;
}

/* 顶部信息条 */
.top-bar{
    background:rgba(0,0,0,.25);
    font-size:13px;
    color:rgba(255,255,255,.75);
    line-height:1;
}

.top-bar-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:36px;
}

.top-bar-left{
    display:flex;
    align-items:center;
    gap:10px;
}

.top-bar-divider{
    opacity:.4;
    font-size:12px;
}

.top-bar-phone{
    display:inline-flex;
    align-items:center;
    letter-spacing:.3px;
}

.top-bar-right{
    display:flex;
    align-items:center;
    gap:0;
    border:1px solid rgba(255,255,255,.35);
    border-radius:50px;
    padding:2px 4px;
}

.social-icon{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:28px;
    height:28px;
    border-radius:50%;
    color:rgba(255,255,255,.7);
    transition:.3s;
    background:transparent;
}

.social-icon:hover{
    color:#fff;
    background:rgba(255,255,255,.15);
    transform:translateY(-1px);
}

/* 搜索图标 */
.search-icon{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:40px;
    height:40px;
    color:rgba(255,255,255,.85);
    transition:.3s;
    position:relative;
    margin-left:12px;
}

.search-icon::before{
    content:'';
    position:absolute;
    left:-12px;
    top:50%;
    transform:translateY(-50%);
    width:2px;
    height:22px;
    background:#4ea1ff;
    border-radius:1px;
}

.search-icon:hover{
    color:#fff;
    transform:scale(1.1);
}

.btn-demo{
    padding:10px 24px;
    background:linear-gradient(135deg,#1976ff,#42a5ff);
    color:#fff;
    border-radius:8px;
    font-size:14px;
    transition:.3s;
}

.btn-demo:hover{
    transform:translateY(-2px);
    box-shadow:0 8px 20px rgba(25,118,255,.4);
}

.hero{
    height:600px;
    background:url('../images/banner.jpg') center/cover no-repeat;
    display:flex;
    align-items:center;
    color:#fff;
}

.hero-content{
    width:760px;
    text-shadow:0 2px 8px rgba(0,0,0,.3);
}

.hero h1{
    font-size:52px;
    line-height:1.2;
    margin-bottom:30px;
    font-weight:800;
    color:#fff;
}

.hero p{
    font-size:22px;
    color:#fff;
    margin-bottom:45px;
    opacity:.95;
}

.btn-group{
    display:flex;
    gap:16px;
    align-items:center;
}

.btn{
    display:inline-block;
    padding:14px 32px;
    border-radius:8px;
    font-size:15px;
    transition:.3s;
    font-weight:500;
}

.btn-primary{
    background:linear-gradient(135deg,#1976ff,#42a5ff);
    color:#fff;
    box-shadow:0 8px 24px rgba(25,118,255,.3);
}

.btn-primary:hover{
    transform:translateY(-2px);
    box-shadow:0 12px 32px rgba(25,118,255,.4);
}

.btn-outline{
    border:1px solid rgba(255,255,255,.5);
    color:#fff;
    background:transparent;
}

.btn-outline:hover{
    background:rgba(255,255,255,.1);
    border-color:rgba(255,255,255,.8);
}

.section{
    padding:50px 0;
}

.section-title{
    text-align:center;
    margin-bottom:60px;
}

.section-title h2{
    font-size:36px;
    margin-bottom:12px;
    color:#0f172a;
}

.section-title p{
    color:#64748b;
    font-size:15px;
}

.grid{
    display:grid;
    grid-template-columns:repeat(12,1fr);
    gap:24px;
    max-width:100%;
    margin:0 auto;
}

.grid-top > .card{
    grid-column:span 4;
}

.grid-bottom{
    margin-top:24px;
}

.grid-bottom > .card{
    grid-column:span 3;
}

.card{
    background:#fff;
    border-radius:16px;
    padding:32px;
    transition:.35s;
    border:1px solid #eef2f7;
    box-shadow:0 4px 20px rgba(15,23,42,.06);
    position:relative;
    display:flex;
    gap:20px;
    align-items:flex-start;
}

.card:hover{
    transform:translateY(-8px);
    box-shadow:0 12px 40px rgba(15,23,42,.12);
    border-color:#d4e4ff;
}

.icon{
    width:56px;
    height:56px;
    min-width:56px;
    border-radius:50%;
    background:linear-gradient(135deg,#f0f7ff,#e0efff);
    display:flex;
    align-items:center;
    justify-content:center;
    color:#3b82f6;
    font-size:24px;
    margin-bottom:0;
}

.card-content{
    flex:1;
}

.card h3{
    font-size:18px;
    margin-bottom:10px;
    color:#0f172a;
    font-weight:600;
}

.card p{
    color:#64748b;
    font-size:14px;
    line-height:1.6;
    margin-bottom:12px;
}

.card-link{
    display:inline-block;
    color:#1976ff;
    font-size:14px;
    font-weight:500;
    transition:.3s;
}

.card-link:hover{
    color:#4ea1ff;
    transform:translateX(4px);
}

.stats{
    background:linear-gradient(rgba(6,18,48,.92),rgba(6,18,48,.92)),url('../images/campus.jpg') center/cover;
    color:#fff;
    padding:80px 0;
}

.stats-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:30px;
    text-align:center;
}

.stats-item h3{
    font-size:48px;
    margin-bottom:8px;
    font-weight:700;
    color:#4ea1ff;
}

.stats-item p{
    font-size:15px;
    color:rgba(255,255,255,.8);
}

.case-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
}

.case-item{
    overflow:hidden;
    border-radius:20px;
    background:#fff;
    box-shadow:0 10px 40px rgba(0,0,0,.06);
}

.case-item img{
    width:100%;
    height:220px;
    object-fit:cover;
}

.case-content{
    padding:24px;
}

/* 成功案例 - 校徽网格展示 */
.section-cases{
    background:#fff;
    padding-bottom:60px;
}

.logo-grid{
    display:grid;
    grid-template-columns:repeat(8,1fr);
    gap:24px 20px;
    max-width:1000px;
    margin:0 auto;
}

.logo-item{
    display:flex;
    align-items:center;
    justify-content:center;
}

.logo-item img{
    width:80px;
    height:80px;
    object-fit:contain;
    border-radius:50%;
    transition:opacity .3s;
}

.logo-item:hover img{
    opacity:.75;
}

/* 响应式 */
@media(max-width:768px){
    .logo-grid{
        grid-template-columns:repeat(4,1fr);
        gap:16px;
    }
    .logo-item img{
        width:60px;
        height:60px;
    }
}

@media(max-width:480px){
    .logo-grid{
        grid-template-columns:repeat(3,1fr);
        gap:12px;
    }
    .logo-item img{
        width:50px;
        height:50px;
    }
}

.news-list{
    display:flex;
    flex-direction:column;
    gap:24px;
}

.news-item{
    background:#fff;
    border-radius:18px;
    padding:30px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    transition:.3s;
}

.news-item:hover{
    transform:translateX(8px);
}

.footer{
    background:#07142d;
    color:#fff;
    padding:50px 0 30px;
}

.footer-grid{
    display:grid;
    grid-template-columns:2fr 1fr 1fr 1fr 1fr;
    gap:24px;
}

.footer h4{
    margin-bottom:12px;
    font-size:20px;
}

.footer a{
    display:block;
    color:rgba(255,255,255,.72);
    margin-bottom:8px;
}

.footer-qr img{
    width:120px;
    height:120px;
    display:block;
    margin:0 auto 8px;
    border-radius:4px;
}

.footer-qr p{
    color:rgba(255,255,255,.6);
    font-size:13px;
    margin:0;
    text-align:center;
}

.footer-bottom{
    margin-top:30px;
    border-top:1px solid rgba(255,255,255,.08);
    padding-top:25px;
    text-align:center;
    color:rgba(255,255,255,.55);
}

.page-banner{
    height:420px;
    background:linear-gradient(rgba(5,15,42,.82),rgba(5,15,42,.82)),url('../images/banner.jpg') center/cover;
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    text-align:center;
}

.page-banner h1{
    font-size:58px;
    margin-bottom:18px;
}

.page-content{
    padding:100px 0;
}

.two-col{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:60px;
    align-items:center;
}

.two-col img{
    width:100%;
    border-radius:24px;
}

.contact-box{
    background:#fff;
    border-radius:24px;
    padding:50px;
    box-shadow:0 20px 50px rgba(15,23,42,.08);
}

.form-group{
    margin-bottom:22px;
}

.form-group input,
.form-group textarea{
    width:100%;
    padding:16px;
    border-radius:12px;
    border:1px solid #dbe4ef;
    font-size:15px;
}

textarea{
    height:140px;
    resize:none;
}

@media(max-width:1200px){
    .container{
        width:92%;
    }

    .grid,
    .stats-grid,
    .case-grid,
    .footer-grid,
    .two-col{
        grid-template-columns:1fr;
    }

    .grid-top > .card,
    .grid-bottom > .card{
        grid-column:span 1;
    }

    .hero h1{
        font-size:48px;
    }

    .top-bar-text{
        display:none;
    }

    .top-bar-divider:first-of-type{
        display:none;
    }
}

/* ========== 产品详情页样式 ========== */
.product-detail-content{
    max-width:960px;
    margin:0 auto;
}

.product-detail-block{
    margin-bottom:64px;
}

.product-detail-title{
    font-size:28px;
    font-weight:700;
    color:#0f172a;
    text-align:center;
    margin-bottom:12px;
    position:relative;
    padding-bottom:16px;
}

.product-detail-title::after{
    content:'';
    position:absolute;
    bottom:0;
    left:50%;
    transform:translateX(-50%);
    width:48px;
    height:3px;
    background:linear-gradient(135deg,#1976ff,#42a5ff);
    border-radius:2px;
}

.product-detail-subtitle{
    text-align:center;
    color:#64748b;
    font-size:15px;
    margin-bottom:36px;
}

.product-detail-desc{
    font-size:15px;
    line-height:1.8;
    color:#475569;
    text-align:center;
    margin-top:24px;
    padding:0 40px;
}

/* 功能模块网格 */
.product-feature-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
    margin-top:36px;
}

.product-feature-item{
    background:#fff;
    border-radius:16px;
    padding:28px 24px;
    text-align:center;
    border:1px solid #eef2f7;
    box-shadow:0 4px 16px rgba(15,23,42,.05);
    transition:.3s;
}

.product-feature-item:hover{
    transform:translateY(-6px);
    box-shadow:0 12px 32px rgba(15,23,42,.1);
    border-color:#d4e4ff;
}

.product-feature-icon{
    width:56px;
    height:56px;
    border-radius:50%;
    background:linear-gradient(135deg,#f0f7ff,#e0efff);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    color:#3b82f6;
    margin-bottom:16px;
}

.product-feature-item h3{
    font-size:16px;
    color:#0f172a;
    margin-bottom:8px;
    font-weight:600;
}

.product-feature-item p{
    font-size:13px;
    color:#64748b;
    line-height:1.6;
}

/* 产品演示 */
.product-demo-features{
    margin-top:36px;
    display:flex;
    flex-direction:column;
    gap:20px;
}

.product-demo-item{
    display:flex;
    align-items:flex-start;
    gap:20px;
    background:#fff;
    border-radius:16px;
    padding:28px 32px;
    border:1px solid #eef2f7;
    box-shadow:0 4px 16px rgba(15,23,42,.05);
    transition:.3s;
}

.product-demo-item:hover{
    transform:translateX(6px);
    box-shadow:0 8px 24px rgba(15,23,42,.08);
}

.product-demo-num{
    font-size:36px;
    font-weight:800;
    color:#1976ff;
    opacity:.3;
    line-height:1;
    min-width:56px;
}

.product-demo-item h3{
    font-size:16px;
    color:#0f172a;
    margin-bottom:6px;
    font-weight:600;
}

.product-demo-item p{
    font-size:14px;
    color:#64748b;
    line-height:1.6;
}

/* 系统优势网格 */
.product-advantage-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
    margin-top:36px;
}

.product-advantage-item{
    background:#fff;
    border-radius:16px;
    padding:32px 24px;
    text-align:center;
    border:1px solid #eef2f7;
    box-shadow:0 4px 16px rgba(15,23,42,.05);
    transition:.3s;
}

.product-advantage-item:hover{
    transform:translateY(-6px);
    box-shadow:0 12px 32px rgba(15,23,42,.1);
    border-color:#d4e4ff;
}

.product-advantage-icon{
    width:64px;
    height:64px;
    border-radius:50%;
    background:linear-gradient(135deg,#eff6ff,#dbeafe);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    color:#3b82f6;
    margin-bottom:16px;
}

.product-advantage-item h3{
    font-size:16px;
    color:#0f172a;
    margin-bottom:8px;
    font-weight:600;
}

.product-advantage-item p{
    font-size:13px;
    color:#64748b;
    line-height:1.6;
}

/* 服务流程网格 */
.product-service-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
    margin-top:36px;
}

.product-service-item{
    background:linear-gradient(135deg,#f8fafc,#f1f5f9);
    border-radius:16px;
    padding:32px 24px;
    text-align:center;
    border:1px solid #e2e8f0;
    transition:.3s;
}

.product-service-item:hover{
    transform:translateY(-6px);
    box-shadow:0 12px 32px rgba(15,23,42,.1);
    background:linear-gradient(135deg,#eff6ff,#dbeafe);
    border-color:#bfdbfe;
}

.product-service-num{
    font-size:28px;
    font-weight:800;
    color:#1976ff;
    margin-bottom:12px;
}

.product-service-item h3{
    font-size:16px;
    color:#0f172a;
    margin-bottom:8px;
    font-weight:600;
}

.product-service-item p{
    font-size:13px;
    color:#64748b;
    line-height:1.6;
}

/* 底部CTA */
.product-detail-cta{
    text-align:center;
    background:linear-gradient(135deg,#eff6ff,#dbeafe);
    border-radius:20px;
    padding:48px 32px;
    margin-top:20px;
}

.product-detail-cta h2{
    font-size:28px;
    color:#0f172a;
    margin-bottom:8px;
}

.product-detail-cta p{
    color:#64748b;
    font-size:15px;
}

/* 产品演示图片并列 */
.product-demo-images{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:20px;
    margin-top:36px;
}

.product-demo-images img{
    width:100%;
    height:auto;
    border-radius:12px;
    border:1px solid #e2e8f0;
    box-shadow:0 4px 16px rgba(15,23,42,.06);
}

@media(max-width:768px){
    .product-demo-images{
        grid-template-columns:1fr;
    }
}

/* 报告展示画廊 */
.product-report-gallery{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:16px;
    margin-top:36px;
}

.product-report-gallery img{
    width:100%;
    height:auto;
    border-radius:10px;
    border:1px solid #e2e8f0;
    box-shadow:0 4px 16px rgba(15,23,42,.06);
    transition:.3s;
}

.product-report-gallery img:hover{
    transform:scale(1.02);
    box-shadow:0 8px 24px rgba(15,23,42,.1);
}

@media(max-width:768px){
    .product-report-gallery{
        grid-template-columns:1fr;
    }
}

/* 产品详情响应式 */
@media(max-width:1200px){
    .product-feature-grid{
        grid-template-columns:repeat(2,1fr);
    }
    .product-advantage-grid,
    .product-service-grid{
        grid-template-columns:repeat(2,1fr);
    }
}

@media(max-width:768px){
    .product-feature-grid,
    .product-advantage-grid,
    .product-service-grid{
        grid-template-columns:1fr;
    }
    .product-detail-desc{
        padding:0;
    }
    .product-detail-title{
        font-size:24px;
    }
}