*{margin:0;padding:0;box-sizing:border-box}
        body{font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:#333;line-height:1.6}
        .container{max-width:1200px;margin:0 auto;padding:0 20px}
        
        /* 导航栏 */
        .navbar{position:fixed;top:0;left:0;width:100%;z-index:100;padding:15px 0;transition:all .3s}
        .navbar.nav-scroll{background:rgba(255,255,255,.95);box-shadow:0 2px 10px rgba(0,0,0,.05)}
        .nav-wrap{display:flex;justify-content:space-between;align-items:center}
        .logo{font-size:22px;font-weight:bold;color:#fff}
        .navbar.nav-scroll .logo{color:#0F766E}
        .nav-menu{display:flex;gap:30px;list-style:none}
        .nav-menu a{color:#fff;text-decoration:none;font-weight:500}
        .navbar.nav-scroll .nav-menu a{color:#444}
        .nav-menu a:hover{color:#0F766E}
        .nav-btn{background:#0F766E;color:#fff;padding:8px 20px;border-radius:30px;text-decoration:none;font-size:14px}
        .menu-btn{display:none;font-size:24px;color:#fff;background:none;border:none;cursor:pointer}
        .mobile-menu{display:none;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.1);margin-top:15px}
        .mobile-menu a{display:block;padding:12px 20px;color:#444;text-decoration:none;border-bottom:1px solid #f0f0f0}
        .mobile-menu a:hover{color:#0F766E}

        /* Banner 动态幻灯 - 高度450px */
        .banner{height:450px;position:relative;display:flex;align-items:center;color:#fff;overflow:hidden}
        .banner::before, .banner::after{
            content:"";
            position:absolute;
            inset:0;
            transition:opacity 2s ease;
        }
        .banner::before{
            background:linear-gradient(135deg, #0F766E 0%, #0369A1 100%);
            animation:fadeIn1 12s infinite;
        }
        .banner::after{
            background:linear-gradient(135deg, #065f46 0%, #0891b2 100%);
            animation:fadeIn2 12s infinite;
        }
        @keyframes fadeIn1{
            0%, 45% {opacity:1}
            55%, 100% {opacity:0}
        }
        @keyframes fadeIn2{
            0%, 45% {opacity:0}
            55%, 100% {opacity:1}
        }
        .banner-content{position:relative;z-index:2}
        .banner h1{font-size:clamp(28px,4vw,48px);font-weight:bold;line-height:1.2;margin-bottom:15px;text-shadow:0 2px 4px rgba(0,0,0,.3)}
        .banner p{font-size:clamp(15px,2vw,18px);margin-bottom:25px;max-width:700px;opacity:.9}
        .banner-btns{display:flex;gap:20px;flex-wrap:wrap;margin-bottom:40px}
        .btn-primary{background:#fff;color:#0F766E;padding:10px 28px;border-radius:30px;text-decoration:none;font-weight:500;box-shadow:0 4px 15px rgba(0,0,0,.15)}
        .btn-outline{background:transparent;color:#fff;border:2px solid #fff;padding:10px 28px;border-radius:30px;text-decoration:none;font-weight:500}
        .banner-stats{display:flex;gap:40px;flex-wrap:wrap}
        .stat-item{text-align:center}
        .stat-num{font-size:28px;font-weight:bold;margin-bottom:5px}
        .stat-label{opacity:.8;font-size:13px}

        /* 通用区块 */
        section{padding:70px 0}
        .section-title{text-align:center;margin-bottom:50px}
        .section-title h2{font-size:clamp(22px,3vw,32px);font-weight:bold;margin-bottom:12px;color:#222}
        .section-title p{color:#666;max-width:700px;margin:0 auto}
        .bg-gray{background:#f8f9fa}

        /* 核心优势 */
        .advantages{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
        .adv-card{background:#fff;padding:30px;border-radius:12px;text-align:center;box-shadow:0 2px 8px rgba(0,0,0,.05);transition:all .3s}
        .adv-card:hover{transform:translateY(-8px);box-shadow:0 10px 25px rgba(0,0,0,.1)}
        .adv-icon{width:60px;height:60px;background:rgba(15,118,110,.1);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:24px;color:#0F766E}
        .adv-card h3{font-size:18px;margin-bottom:10px}
        .adv-card p{color:#666;font-size:14px}

        /* 服务项目 */
        .services{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
        .service-card{background:#fff;border-radius:12px;overflow:hidden;border:1px solid #eee;transition:all .3s}
        .service-card:hover{transform:translateY(-8px);box-shadow:0 10px 25px rgba(0,0,0,.1)}
        .service-img{height:180px;background:linear-gradient(135deg,#0F766E,#0369A1);display:flex;align-items:center;justify-content:center;color:#fff;font-size:48px}
        .service-body{padding:25px}
        .service-body h3{font-size:20px;color:#0F766E;margin-bottom:10px}
        .service-body p{color:#666;font-size:14px;margin-bottom:15px}
        .service-body ul{list-style:none;margin-bottom:15px}
        .service-body li{color:#666;font-size:14px;margin-bottom:5px}
        .service-body li::before{content:"✓ ";color:#0F766E;font-weight:bold}
        .service-body a{color:#0F766E;font-size:14px;text-decoration:none;font-weight:500}

        /* 服务流程 - 6步对齐版 */
        .process{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;text-align:center}
        .step-num{width:60px;height:60px;background:#0F766E;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 15px;font-size:20px;font-weight:bold}
        .step-item h3{font-size:16px;margin-bottom:5px}
        .step-item p{color:#666;font-size:13px}

        /* 案例 */
        .cases{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
        .case-card{border-radius:12px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.05);transition:all .3s}
        .case-card:hover{transform:translateY(-5px);box-shadow:0 8px 20px rgba(0,0,0,.1)}
        .case-img{height:150px;background:linear-gradient(135deg,#ddd,#bbb);display:flex;align-items:center;justify-content:center;color:#666;font-size:14px}
        .case-body{padding:15px;background:#fff}
        .case-body h3{font-size:16px;margin-bottom:5px}
        .case-body p{color:#888;font-size:13px}

        /* 资质 */
        .honors{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
        .honor-card{background:#fff;padding:20px;border-radius:12px;text-align:center;box-shadow:0 2px 8px rgba(0,0,0,.05);transition:all .3s}
        .honor-card:hover{transform:translateY(-5px)}
        .honor-icon{font-size:32px;color:#0F766E;margin-bottom:10px}
        .honor-card p{font-size:13px;font-weight:500}

        /* FAQ */
        .faq-list{max-width:800px;margin:0 auto}
        .faq-item{border:1px solid #e5e7eb;border-radius:8px;padding:20px;margin-bottom:15px}
        .faq-item h3{font-size:18px;margin-bottom:8px}
        .faq-item p{color:#666;font-size:14px}

        /* 联系我们 + 新闻 */
        .contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;max-width:1000px;margin:0 auto}
        .contact-info h3, .contact-news h3{font-size:20px;margin-bottom:25px}
        .info-item{display:flex;margin-bottom:25px}
        .info-icon{width:40px;height:40px;background:rgba(15,118,110,.1);border-radius:50%;display:flex;align-items:center;justify-content:center;margin-right:15px;flex-shrink:0;color:#0F766E}
        .info-text h4{font-size:15px;margin-bottom:5px}
        .info-text p{color:#666;font-size:14px}

        /* 新闻列表样式 */
        .news-list{list-style:none;background:#fff;padding:30px;border-radius:12px;box-shadow:0 2px 15px rgba(0,0,0,.05)}
        .news-item{padding-bottom:18px;margin-bottom:18px;border-bottom:1px solid #eee}
        .news-item:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}
        .news-item h4{font-size:16px;margin-bottom:6px;line-height:1.4}
        .news-item h4 a{color:#333;text-decoration:none}
        .news-item h4 a:hover{color:#0F766E}
        .news-date{font-size:12px;color:#999;margin-bottom:8px;display:block}
        .news-item p{font-size:13px;color:#666;line-height:1.6}
        .more-news{color:#0F766E;font-size:14px;text-decoration:none;font-weight:500;display:inline-block;margin-top:20px}

        /* 页脚 */
        footer{background:#1f2937;color:#d1d5db;padding:50px 0 20px}
        .footer-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:30px}
        .footer-logo{font-size:20px;font-weight:bold;color:#fff;margin-bottom:15px}
        .footer-desc{font-size:13px;color:#9ca3af;margin-bottom:15px;line-height:1.8}
        .footer-col h4{color:#fff;font-size:16px;margin-bottom:20px}
        .footer-col ul{list-style:none}
        .footer-col li{margin-bottom:8px}
        .footer-col a{color:#9ca3af;text-decoration:none;font-size:13px}
        .footer-col a:hover{color:#fff}
        .footer-bottom{border-top:1px solid #374151;padding-top:20px;text-align:center;font-size:13px;color:#6b7280}

        /* 回到顶部 */
        .back-top{position:fixed;bottom:24px;right:24px;width:48px;height:48px;background:#0F766E;color:#fff;border:none;border-radius:50%;cursor:pointer;opacity:0;visibility:hidden;transition:all .3s;z-index:99}
        .back-top.show{opacity:1;visibility:visible}

        /* 响应式 */
        @media (max-width:992px){
            .advantages,.services,.honors{grid-template-columns:repeat(2,1fr)}
            .process{grid-template-columns:repeat(3,1fr);gap:30px}
            .cases{grid-template-columns:repeat(2,1fr)}
            .footer-wrap{grid-template-columns:repeat(2,1fr)}
        }
        @media (max-width:768px){
            .nav-menu{display:none}
            .menu-btn{display:block}
            .banner-btns{justify-content:center}
            .banner-stats{gap:30px;justify-content:center}
            .process{grid-template-columns:repeat(2,1fr)}
            .contact-wrap{grid-template-columns:1fr}
        }
        @media (max-width:576px){
            .advantages,.services,.cases,.honors{grid-template-columns:1fr}
            .process{grid-template-columns:1fr}
            .footer-wrap{grid-template-columns:1fr}
            section{padding:40px 0}
            .section-title{margin-bottom:30px}
        }