*{margin:0;padding:0;box-sizing:border-box}
        :root{
            --primary:#0A58FF;
            --primary-dark:#003ecb;
            --secondary:#111827;
            --light:#f8fafc;
            --gray:#64748b;
            --white:#fff;
            --dark:#0f172a;
            --success:#059669;
        }
        body{font-family:'Inter',sans-serif;color:var(--dark);line-height:1.7;overflow-x:hidden}
        .container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
        .section{padding:90px 0}
        .section-title{text-align:center;margin-bottom:60px}
        .section-title h2{font-size:38px;font-weight:700;margin-bottom:16px;color:var(--secondary)}
        .section-title p{max-width:650px;margin:0 auto;color:var(--gray);font-size:17px}
        .btn{display:inline-block;padding:15px 36px;border-radius:50px;font-weight:600;text-decoration:none;transition:all .3s}
        .btn-primary{background:linear-gradient(90deg,#0A58FF,#0040ff);color:#fff;box-shadow:0 8px 24px rgba(10,88,255,.25)}
        .btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(10,88,255,.35)}
        .btn-outline{border:2px solid var(--primary);color:var(--primary)}
        .btn-outline:hover{background:var(--primary);color:#fff}
        /* 导航 */
        header{position:fixed;top:0;left:0;width:100%;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);z-index:999;box-shadow:0 2px 15px rgba(0,0,0,.05)}
        .nav{display:flex;align-items:center;justify-content:space-between;height:80px}
        .logo{font-size:26px;font-weight:800;color:var(--primary);text-decoration:none}
        .nav-menu{display:flex;gap:38px;list-style:none}
        .nav-menu a{color:var(--secondary);font-weight:500;text-decoration:none;transition:.3s}
        .nav-menu a:hover{color:var(--primary)}
        .mobile-btn{display:none;font-size:26px;background:none;border:none}
        /* 首屏 */
        .hero{padding:140px 0 100px;background:linear-gradient(135deg,#f0f7ff 0%,#e6f0ff 100%);text-align:center}
        .hero h1{font-size:52px;line-height:1.2;margin-bottom:24px;font-weight:800}
        .hero h1 span{color:var(--primary)}
        .hero-desc{font-size:19px;color:var(--gray);max-width:750px;margin:0 auto 40px}
        .hero-btns{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}
        /* 企业痛点 */
        .pain{background:var(--light)}
        .pain-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:28px}
        .pain-item{background:#fff;padding:36px;border-radius:18px;text-align:center;box-shadow:0 4px 18px rgba(0,0,0,.05)}
        .pain-item h3{font-size:20px;margin-bottom:12px;color:var(--secondary)}
        .pain-item p{color:var(--gray)}
        /* 核心服务 */
        .service-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:32px}
        .service-card{background:#fff;padding:44px 32px;border-radius:20px;box-shadow:0 8px 24px rgba(0,0,0,.06);transition:.3s;text-align:center}
        .service-card:hover{transform:translateY(-8px);box-shadow:0 14px 32px rgba(10,88,255,.12)}
        .service-card h3{font-size:22px;margin-bottom:14px}
        .service-card p{color:var(--gray)}
        /* 核心优势 */
        .advantage{background:var(--light)}
        .adv-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px}
        .adv-item{text-align:center;padding:20px}
        .adv-item h3{font-size:24px;margin-bottom:10px;color:var(--secondary)}
        /* 客户案例 */
        .case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:30px}
        .case-card{border-radius:18px;overflow:hidden;background:#fff;box-shadow:0 6px 20px rgba(0,0,0,.07)}
        .case-body{padding:30px}
        .case-tag{display:inline-block;padding:6px 12px;background:#e6f0ff;color:var(--primary);border-radius:8px;font-size:13px;margin-bottom:12px}
        /* 数据增长 */
        .data{background:linear-gradient(90deg,#0A58FF,#0040ff);color:#fff;text-align:center;padding:70px 0}
        .data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
        .data-item h2{font-size:44px;font-weight:800;margin-bottom:8px}
        .data-item p{opacity:.9}
        /* 合作品牌 */
        .brand{background:#fff;text-align:center;padding:60px 0}
        .brand h3{font-size:24px;margin-bottom:30px}
        /* 价格套餐 */
        .pricing{background:var(--light)}
        .price-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:28px}
        .price-card{background:#fff;padding:40px;border-radius:20px;box-shadow:0 8px 24px rgba(0,0,0,.06);position:relative}
        .price-tag{position:absolute;top:-10px;right:30px;background:var(--primary);color:#fff;padding:6px 16px;border-radius:50px;font-size:13px}
        .price-card h3{font-size:24px;margin-bottom:16px}
        .price{font-size:36px;font-weight:700;color:var(--primary);margin-bottom:20px}
        .price-list{list-style:none;margin-bottom:30px}
        .price-list li{padding:10px 0;border-bottom:1px solid #f1f5f9}
        /* 常见问题 */
        .faq{background:#fff}
        .faq-item{max-width:800px;margin:0 auto 20px;background:var(--light);padding:24px;border-radius:14px}
        .faq-item h3{font-size:18px;margin-bottom:8px}
        .faq-item p{color:var(--gray)}
        /* 底部 */
        footer{background:var(--secondary);color:#fff;padding:70px 0 30px}
        .footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:40px}
        .footer-col h4{font-size:18px;margin-bottom:20px}
        .footer-col p,.footer-col a{color:rgba(255,255,255,.7);line-height:2;text-decoration:none}
        .footer-bottom{margin-top:50px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);text-align:center;color:rgba(255,255,255,.5)}

        @media(max-width:992px){
            .nav-menu{display:none}
            .mobile-btn{display:block}
            .hero h1{font-size:38px}
            .data-grid{grid-template-columns:repeat(2,1fr)}
            .section-title h2{font-size:30px}
        }
        @media(max-width:768px){
            .hero{padding:110px 0 70px}
            .section{padding:70px 0}
            .data-grid{grid-template-columns:1fr}
        }