*{margin:0;padding:0;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif}
:root{--primary:#165DFF;--dark:#111827;--gray:#6b7280;--light:#f9fafb;--card:#fff;--border:#e5e7eb}
body{color:var(--dark);background:#fff;line-height:1.6}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;vertical-align:middle}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:80px 0}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:36px;font-weight:700;color:var(--dark);margin-bottom:12px}
.section-title p{font-size:16px;color:var(--gray);max-width:650px;margin:0 auto}

/* 导航 */
.header{position:fixed;top:0;left:0;width:100%;background:rgba(255,255,255,0.97);backdrop-filter:blur(8px);box-shadow:0 2px 10px rgba(0,0,0,0.05);z-index:999}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{font-size:24px;font-weight:700;color:var(--primary)}
.nav-menu{display:flex;gap:32px}
.nav-menu a{font-size:15px;font-weight:500;color:var(--dark);transition:.3s}
.nav-menu a:hover{color:var(--primary)}
.nav-btn{padding:10px 22px;background:var(--primary);color:#fff;border-radius:6px;font-size:14px;font-weight:500;transition:.3s}
.nav-btn:hover{background:#0f4bd0}
.mobile-toggle{display:none;font-size:24px;color:var(--dark)}

/* 横幅 */
.hero{margin-top:70px;padding:100px 0;background:linear-gradient(135deg,#f0f4ff 0%,#f8fafc 100%)}
.hero-wrap{display:flex;align-items:center;gap:40px;flex-wrap:wrap}
.hero-text{flex:1;min-width:300px}
.hero-text h1{font-size:44px;line-height:1.2;font-weight:700;margin-bottom:20px;color:var(--dark)}
.hero-text h1 span{color:var(--primary)}
.hero-text p{font-size:17px;color:var(--gray);margin-bottom:30px;max-width:550px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn-main{padding:14px 32px;background:var(--primary);color:#fff;border-radius:6px;font-weight:500;transition:.3s}
.btn-main:hover{background:#0f4bd0}
.btn-line{padding:14px 32px;border:1px solid var(--primary);color:var(--primary);border-radius:6px;font-weight:500;transition:.3s}
.btn-line:hover{background:#f0f4ff}
.hero-img{flex:1;min-width:300px;text-align:center}
.hero-img img{border-radius:12px}

/* 数据统计 */
.data{background:var(--primary);color:#fff;padding:50px 0}
.data-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;text-align:center}
.data-item h3{font-size:32px;font-weight:700;margin-bottom:8px}
.data-item p{font-size:14px;opacity:0.9}

/* 核心服务 */
.services{background:var(--light)}
.service-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.service-card{background:var(--card);border-radius:12px;padding:32px 24px;border:1px solid var(--border);transition:.3s}
.service-card:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(0,0,0,0.06)}
.service-card h3{font-size:20px;font-weight:600;margin-bottom:12px;color:var(--dark)}
.service-card p{font-size:14px;color:var(--gray);line-height:1.7}

/* 产品矩阵 */
.product{background:#fff}
.product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:30px}
.product-card{background:var(--light);border-radius:12px;padding:40px 30px}
.product-card h3{font-size:22px;font-weight:600;margin-bottom:16px;color:var(--primary)}
.product-card ul{display:flex;flex-direction:column;gap:8px}
.product-card li{font-size:14px;color:var(--gray);position:relative;padding-left:18px}
.product-card li:before{content:"✓";position:absolute;left:0;color:var(--primary);font-weight:bold}

/* 核心能力 */
.ability{background:var(--light)}
.ability-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;text-align:center}
.ability-item{padding:20px}
.ability-item h4{font-size:18px;font-weight:600;margin-bottom:8px}
.ability-item p{font-size:14px;color:var(--gray)}

/* 客户案例 */
.case{background:#fff}
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.case-card{border-radius:12px;overflow:hidden;border:1px solid var(--border)}
.case-card img{width:100%;height:200px;object-fit:cover}
.case-info{padding:20px}
.case-info h4{font-size:16px;font-weight:600;margin-bottom:6px}
.case-info p{font-size:13px;color:var(--gray)}

/* 应用场景 */
.scene{background:var(--light)}
.scene-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.scene-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px}
.scene-card h4{font-size:18px;font-weight:600;margin-bottom:10px}
.scene-card p{font-size:14px;color:var(--gray)}

/* 合作伙伴 */
.partner{background:#fff}
.partner-list{display:flex;align-items:center;justify-content:center;gap:30px;flex-wrap:wrap}
.partner-item{width:120px;height:60px;background:var(--light);border-radius:8px;display:grid;place-items:center;color:var(--gray);font-size:14px}

/* 支持平台 */
.platform{background:var(--light)}
.platform-list{display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap}
.platform-item{width:80px;height:80px;background:#fff;border-radius:8px;display:grid;place-items:center;font-weight:500;color:var(--dark);border:1px solid var(--border)}

/* FAQ */
.faq{background:#fff}
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{margin-bottom:16px;border:1px solid var(--border);border-radius:8px;overflow:hidden}
.faq-question{padding:18px 24px;background:var(--light);font-weight:500;cursor:pointer}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:.3s}
.faq-item.active .faq-answer{padding:20px 24px;max-height:200px}

/* 联系表单 */
.contact{background:var(--light)}
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.contact-form{background:#fff;padding:40px;border-radius:12px;box-shadow:0 5px 20px rgba(0,0,0,0.04)}
.form-group{margin-bottom:20px}
.form-group label{display:block;margin-bottom:8px;font-size:14px;font-weight:500}
.form-control{width:100%;padding:14px 16px;border:1px solid var(--border);border-radius:6px;outline:none;font-size:14px}
.form-control:focus{border-color:var(--primary)}
.submit-btn{width:100%;padding:14px;background:var(--primary);color:#fff;border:none;border-radius:6px;font-weight:500;cursor:pointer}
.contact-info h3{font-size:24px;margin-bottom:20px}
.contact-info p{font-size:15px;color:var(--gray);margin-bottom:12px}

/* 底部 */
.footer{background:var(--dark);color:#fff;padding:60px 0 30px}
.footer-wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:40px;margin-bottom:40px}
.footer-col h4{font-size:16px;font-weight:600;margin-bottom:20px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li a{font-size:14px;color:rgba(255,255,255,0.7);transition:.3s}
.footer-col li a:hover{color:#fff}
.footer-contact p{font-size:14px;color:rgba(255,255,255,0.7);margin-bottom:8px}
.footer-bottom{text-align:center;padding-top:30px;border-top:1px solid rgba(255,255,255,0.1);font-size:13px;color:rgba(255,255,255,0.5)}

@media(max-width:992px){
    .nav-menu{display:none}
    .mobile-toggle{display:block}
    .hero{padding:60px 0}
    .hero-text h1{font-size:34px}
    .section{padding:60px 0}
    .contact-wrap{grid-template-columns:1fr}
}
@media(max-width:768px){
    .hero-wrap{flex-direction:column}
    .section-title h2{font-size:28px}
}