*{margin:0;padding:0;box-sizing:border-box;font-family:system-ui,-apple-system,sans-serif; line-height: 30px;}
        html {scroll-behavior: smooth;}
        :root{
            --primary:#2563eb;
            --dark:#1e293b;
            --gold:#d97706;
            --light:#f8fafc;
            --gray:#6b7280;
            --white:#ffffff;
        }
        body{background:var(--light);color:var(--dark);}
        .container{max-width:1600px;margin:0 auto;padding:0 15px;}

        /* header导航 */
        header{position:sticky;top:0;z-index:99;background:#fff;box-shadow:0 2px 8px #00000012;}
        .header-wrap{display:flex;justify-content:space-between;align-items:center;padding:12px 15px;gap:10px;flex-wrap:wrap;}
        .logo{font-size:24px;font-weight:bold;color:var(--primary);}
        .logo-img {
            max-width: 280px;
            max-height: 70px;
            display: block;
        }
        .nav-menu{display:none;gap:32px;}
        @media(min-width:768px){.nav-menu{display:flex;}}
        .nav-menu a{color:var(--dark);text-decoration:none;font-size:15px;}
        .nav-menu a:hover{color:var(--primary);transition:0.2s;}
        .tel-btn{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;padding:8px 12px;border-radius:8px;text-decoration:none;font-weight:500;font-size:14px;white-space:nowrap;}

        /* banner首屏 */
        .bg-banner{background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;padding:50px 0;}
        @media(min-width:768px){.bg-banner{padding:128px 0;}}
        .banner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:30px;}
        .banner-text{flex:1;min-width:100%;order:1;}
        .banner-img{width:100%;min-width:100px;order:2;}
        @media(min-width:768px){
            .banner-text{min-width:300px;order:unset;flex:1;}
            .banner-img{width:500px;min-width:300px;order:unset;}
        }
        .banner-svg{width:100%;height:auto;}
        .banner h1{font-size:26px;margin-bottom:15px;line-height:1.3;}
        @media(min-width:768px){.banner h1{font-size:48px;}}
        .banner p{font-size:16px;opacity:0.9;margin-bottom:20px;line-height:1.5;}
        @media(min-width:768px){.banner p{font-size:20px;}}
        .tag-group{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
        .tag-item{background:rgba(255,255,255,0.2);padding:6px 12px;border-radius:999px;font-size:13px;}
        .banner-tel{display:inline-block;background:#fff;color:var(--primary);padding:10px 22px;border-radius:8px;font-size:16px;font-weight:600;text-decoration:none;}
        .banner-tel:hover{background:#f1f1f1;transition:0.2s;}

        /* 通用区块 */
        .sec-padding{padding:45px 0;}
        @media(min-width:768px){.sec-padding{padding:64px 0;}}
        .title-box{text-align:center;margin-bottom:40px;}
        .title-box h2{font-size:24px;margin-bottom:10px;line-height:1.3;}
        @media(min-width:768px){.title-box h2{font-size:30px;}}
        .line{width:80px;height:4px;background:var(--primary);margin:0 auto;}

        /* 服务板块三列 */
        .grid-3{display:grid;grid-template-columns:1fr;gap:24px;}
        @media(min-width:768px){.grid-3{grid-template-columns:repeat(3,1fr);gap:32px;}}
        .card{background:#fff;padding:22px;border-radius:16px;box-shadow:0 10px 30px rgba(37,99,235,0.12);}
        .icon-circle{width:52px;height:52px;border-radius:50%;background:rgba(37,99,235,0.1);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary);margin-bottom:16px;}
        .card h3{font-size:19px;margin-bottom:10px;}
        .card p{color:var(--gray);line-height:1.6;font-size:15px;}

        /* 价格区块 */
        .bg-gray{background:#f1f5f9;}
        .price-wrap{margin:0 auto;background:#fff;padding:22px;border-radius:16px;box-shadow:0 10px 30px rgba(37,99,235,0.12);}
        @media(min-width:768px){.price-wrap{padding:32px;}}
        .split-line{border-bottom:1px solid #e5e7eb;padding-bottom:20px;margin-bottom:20px;}
        .grid-2{display:grid;grid-template-columns:1fr;gap:20px;}
        @media(min-width:768px){.grid-2{grid-template-columns:1fr 1fr;gap:24px;}}
        .price-red{color:#dc2626;font-weight:600;margin-top:12px;}
        .tag-price{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;padding:4px 12px;border-radius:6px;font-weight:bold;}
        .tips-box{background:rgba(37,99,235,0.1);padding:14px;border-radius:8px;margin-top:20px;color:var(--primary);font-size:15px;}

        /* 流程5栏 移动端单列 */
        .grid-5{display:grid;grid-template-columns:1fr;gap:20px;}
        @media(min-width:768px){.grid-5{grid-template-columns:repeat(5,1fr);gap:16px;}}
        .flow-item{text-align:center;}
        .flow-num{width:60px;height:60px;border-radius:50%;background:var(--primary);color:#fff;font-size:19px;font-weight:bold;display:flex;align-items:center;justify-content:center;margin:0 auto 12px;}
        .flow-item h4{margin-bottom:6px;font-size:17px;}
        .flow-item p{font-size:14px;color:var(--gray);line-height:1.5;}

        /* 优势4栏 移动端两列 */
        .grid-4{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
        @media(min-width:768px){.grid-4{grid-template-columns:repeat(4,1fr);gap:24px;}}
        .adv-card{background:#fff;padding:20px;border-radius:8px;box-shadow:0 10px 30px rgba(37,99,235,0.12);}
        .adv-icon{font-size:30px;margin-bottom:14px;color:var(--gold);}
        .adv-card h4{margin-bottom:6px;font-size:17px;}
        .adv-card p{font-size:14px;color:var(--gray);line-height:1.6;}

        /* 联系区块 */
        .contact-box{text-align:center;}
        .contact-inner{background:#fff;display:inline-block;padding:22px;border-radius:12px;color:var(--dark);width:100%;max-width:450px;}
        @media(min-width:768px){.contact-inner{padding:32px;}}
        .contact-tel{font-size:28px;font-weight:bold;color:var(--primary);text-decoration:none;display:block;margin:10px 0;}
        @media(min-width:768px){.contact-tel{font-size:32px;}}

        /* 页脚 */
        footer{background:var(--dark);color:#fff;padding:25px 15px;text-align:center;}
        footer p{margin-bottom:6px;font-size:14px;line-height:1.6;}
        .foot-gray{color:#9ca3af;}

        /* 简易图标字符替代，不用font-awesome外部文件 */
        .i-video::before{content:"🎥";}
        .i-phone::before{content:"📞";}
        .i-head::before{content:"🎧";}
        .i-check::before{content:"✓";}
        .i-magic::before{content:"✨";}
        .i-scissors::before{content:"✂️";}
        .i-copy::before{content:"📋";}
        .i-calc::before{content:"🧮";}
        .i-money::before{content:"💰";}
        .i-card::before{content:"💳";}
        .i-right::before{content:"➤";}
        .i-info::before{content:"ⓘ";}
        .i-trophy::before{content:"🏆";}
        .i-bolt::before{content:"⚡";}
        .i-user::before{content:"👥";}
        .i-edit::before{content:"📝";}
        .i-phonebig::before{content:"📱";}