*{margin:0;padding:0;box-sizing:border-box;font-family:system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue','Noto Sans',sans-serif;}
        html{scroll-behavior:smooth;scroll-padding-top:80px;}
        body{background-color:#fefefe;color:#1e2b3a;line-height:1.5;padding-top:80px;}
        .navbar{position:fixed;top:0;left:0;width:100%;background:rgba(255,255,255,0.96);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 4px 20px rgba(0,20,40,0.08);z-index:1000;padding:16px 32px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;border-bottom:1px solid rgba(0,112,243,0.1);}
        .navbar .logo{display:flex;align-items:center;gap:8px;}
        .navbar .logo svg{width:32px;height:32px;fill:#1f4e7a;}
        .navbar .logo a{font-size:1.6rem;font-weight:700;background:linear-gradient(145deg,#0b2b44,#1f4e7a);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-decoration:none;letter-spacing:-0.02em;}
        .nav-links{display:flex;gap:32px;flex-wrap:wrap;align-items:center;}
        .nav-links a{text-decoration:none;color:#1f3b58;font-weight:500;font-size:1.1rem;transition:color .2s;padding:6px 0;border-bottom:2px solid transparent;}
        .nav-links a:hover{color:#1f7ab0;border-bottom-color:#1f7ab0;}
        .nav-links a:focus-visible{outline:2px solid #1f7ab0;outline-offset:4px;}
        .container{max-width:1280px;margin:0 auto;padding:0 24px;}
        .hero{padding:60px 0 50px;background:linear-gradient(145deg,#f8faff 0,#fff 90%);border-radius:0 0 40px 40px;margin-bottom:20px;}
        .hero-content{max-width:900px;margin:0 auto;text-align:center;}
        .hero h1{font-size:2.8rem;font-weight:700;letter-spacing:-0.02em;background:linear-gradient(135deg,#0b2b44,#1f4e7a);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:15px;line-height:1.2;}
        .hero-subtitle{font-size:1.8rem;font-weight:400;color:#2b4b6f;margin-bottom:20px;border-bottom:2px solid rgba(0,112,243,0.15);display:inline-block;padding-bottom:8px;}
        .hero-tagline{font-size:1.4rem;font-weight:350;color:#3a5670;margin:25px 0 10px;}
        .hero-strong{font-size:2.2rem;font-weight:700;color:#0d3b66;background:rgba(0,160,255,0.08);display:inline-block;padding:.4rem 2rem;border-radius:60px;margin-top:15px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);}
        .section-title{font-size:2.2rem;font-weight:650;color:#0f2b40;margin:50px 0 30px;position:relative;padding-bottom:12px;}
        .section-title:after{content:'';position:absolute;bottom:0;left:0;width:70px;height:4px;background:#1d6f9c;border-radius:4px;}
        .services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin:40px 0 20px;}
        .service-card{background:#fff;border:1px solid #e9edf4;border-radius:28px;padding:30px 24px;box-shadow:0 10px 25px -8px rgba(0,35,70,0.08);transition:transform .2s,box-shadow .2s;height:100%;}
        .service-card:hover{transform:translateY(-5px);box-shadow:0 25px 35px -12px rgba(18,67,112,0.15);border-color:#cbd6e6;}
        .service-card h3{font-size:1.7rem;font-weight:650;margin-bottom:16px;color:#113855;border-left:5px solid #1f7ab0;padding-left:16px;}
        .service-card p{font-size:1rem;color:#2d4055;margin-bottom:0;line-height:1.6;}
        .advantages-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px 35px;background:#f2f7fd;padding:45px 40px;border-radius:48px;margin:40px 0 30px;}
        .advantage-item{display:flex;align-items:flex-start;gap:12px;font-size:1.1rem;font-weight:500;color:#103450;}
        .advantage-marker{color:#1d7ab3;font-weight:700;font-size:1.8rem;line-height:1;min-width:32px;}
        .advantage-text{margin-top:4px;}
        .advantage-text strong{font-weight:700;color:#02243d;display:inline-block;margin-right:5px;}
        .cases-showcase{background-color:#fff;border-radius:40px;padding:30px 30px 45px;border:1px solid #e2eaf2;margin:40px 0;}
        .cases-desc{font-size:1.2rem;color:#23496b;background:#e7f0f9;padding:14px 25px;border-radius:50px;margin-bottom:35px;display:inline-block;}
        .case-cards{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
        .case-item{background:#f2f6fb;border-radius:28px;padding:28px 12px;text-align:center;font-weight:600;color:#043753;border:1px solid #d5e2f0;transition:all .2s;font-size:1.05rem;box-shadow:0 4px 8px rgba(0,20,50,0.02);}
        .case-item:hover{background:#e1edfb;border-color:#8bb9dd;transform:scale(1.01);}
        .contact-block{background:#0c2d46;color:#fff;border-radius:50px 50px 30px 30px;padding:50px 45px;margin:60px 0 40px;background-image:radial-gradient(circle at 80% 30%,#1f537a,#0a2538);}
        .contact-block h2{color:#fff;font-size:2.2rem;font-weight:600;margin-bottom:30px;border-left:8px solid #64b5f6;padding-left:25px;}
        .contact-details{display:flex;flex-wrap:wrap;gap:40px 70px;font-size:1.3rem;margin:25px 0 15px;align-items:center;}
        .contact-details div{display:flex;align-items:center;gap:15px;background:rgba(255,255,255,0.06);padding:12px 32px;border-radius:60px;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);}
        .contact-details span{font-weight:300;color:#d2e5ff;}
        .wechat-number{font-weight:700;cursor:pointer;border-bottom:2px dotted #64b5f6;padding-bottom:2px;transition:background .2s;color:#ffd966;font-size:1.4rem;margin-left:5px;background:none;border:none;font-family:inherit;} /* 按钮样式重置 */
        .wechat-number:hover{background-color:rgba(100,181,246,0.2);border-radius:12px;padding:2px 8px;}
        .wechat-number:focus-visible{outline:2px solid #64b5f6;outline-offset:4px;border-radius:12px;}
        .telephone-link{color:#fff;text-decoration:none;font-weight:700;font-size:1.4rem;border-bottom:1px solid #64b5f6;}
        .telephone-link:hover{color:#ffd966;}
        .service-range{margin-top:30px;font-size:1.25rem;background:rgba(255,255,255,0.1);padding:18px 30px;border-radius:60px;display:inline-block;border:1px dashed #7cb9e8;}
        .copy-toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,0.75);color:#fff;padding:12px 28px;border-radius:50px;font-size:1rem;z-index:9999;display:none;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);box-shadow:0 10px 25px rgba(0,0,0,0.2);border:1px solid rgba(255,255,255,0.2);pointer-events:none;}
        .footer-note{text-align:center;padding:30px 0 25px;color:#5b6f83;border-top:1px solid #cfddee;margin-top:30px;}
        .footer-note a{color:#1d6f9c;text-decoration:none;}
        .footer-note a:hover{text-decoration:underline;}
        @media (max-width:1024px){.services-grid{grid-template-columns:repeat(2,1fr);}.advantages-grid{grid-template-columns:repeat(2,1fr);}.case-cards{grid-template-columns:repeat(3,1fr);}}
        @media (max-width:700px){.navbar{padding:12px 20px;}.nav-links{gap:16px;margin-top:8px;width:100%;justify-content:center;}.navbar .logo a{font-size:1.3rem;}body{padding-top:110px;}html{scroll-padding-top:110px;}.hero h1{font-size:2.2rem;}.hero-subtitle{font-size:1.3rem;}.hero-strong{font-size:1.6rem;}.services-grid{grid-template-columns:1fr;}.advantages-grid{grid-template-columns:1fr;padding:30px 20px;}.case-cards{grid-template-columns:1fr 1fr;}.contact-details{flex-direction:column;align-items:flex-start;gap:20px;}.contact-block{padding:35px 25px;}}
        @media (max-width:480px){.nav-links{gap:12px;}.nav-links a{font-size:.95rem;}.case-cards{grid-template-columns:1fr;}.contact-details div{flex-wrap:wrap;}}
        /* 辅助可访问性：跳过导航链接 */
        .skip-link{position:absolute;top:-40px;left:0;background:#0c2d46;color:#fff;padding:8px;z-index:10000;text-decoration:none;}
        .skip-link:focus{top:0;}