@charset "UTF-8"; *{margin:0;padding:0;box-sizing:border-box}html{font-size:62.5%}body{font-family:sans-serif;background-color:#fff;overflow-x:hidden}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}.header{position:fixed;top:0;left:0;width:100%;z-index:1000;background-color:#fff;box-shadow:0 2px 10px rgba(0,0,0,.05);padding:15px 0}.header-inner{display:flex;align-items:center;justify-content:space-between}.header-logo a{display:block;text-decoration:none}.header-logo img{height:35px;width:auto;display:block;object-fit:contain;object-position:left center}.header-nav{flex:1;display:flex;justify-content:center;margin:0 40px}.nav-list{display:flex;gap:50px;list-style:none}.nav-item a{text-decoration:none;color:#333;font-size:1.5rem;font-weight:500;transition:color .3s}.nav-item a:hover{color:#00a0e9}.btn-cta{display:inline-block;padding:16px 48px;background:linear-gradient(135deg,#00a0e9 0%,#00d4ff 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.container{position:relative;z-index:2}.contact-content{max-width:550px;margin-left:auto;margin-right:50px;text-align:center}.contact-lead{font-size:2rem;font-weight:700;margin-bottom:40px;line-height:1.8;color:#333}.contact-list{text-align:center;margin:0 auto 50px;max-width:450px;list-style:none}.contact-list li{padding:10px 0;font-size:1.6rem;color:#555;line-height:1.8}.footer{padding:50px 0 30px;position:relative;background:#2c3e50;overflow:hidden;text-align:center;color:#fff}.footer-bg-network{position:absolute;bottom:0;left:0;width:40%;height:100%;background-image:url('https://aitechworld.info/wp-content/uploads/2025/12/Mask-group-1.png');background-repeat:no-repeat;background-position:bottom left;background-size:contain;opacity:.2;z-index:1}.footer .container{position:relative;z-index:2}.footer-logo{display:flex;align-items:center;justify-content:center;margin-bottom:20px}.footer-logo 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0}.header-inner{display:flex;align-items:center;justify-content:space-between}.header-logo a{display:block;text-decoration:none}.header-logo img{height:35px;width:auto;display:block;object-fit:contain;object-position:left center}.header-nav{flex:1;display:flex;justify-content:center;margin:0 40px}.nav-list{display:flex;gap:50px;list-style:none}.nav-item a{text-decoration:none;color:#333;font-size:1.5rem;font-weight:500;transition:color .3s}.nav-item a:hover{color:#00a0e9}.btn-cta{display:inline-block;padding:16px 48px;background:linear-gradient(135deg,#00a0e9 0%,#00d4ff 100%);color:#fff;text-decoration:none;border-radius:50px;font-size:1.6rem;font-weight:700;box-shadow:0 4px 15px rgba(0,160,233,.3);transition:all .3s;white-space:nowrap}.btn-cta:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,160,233,.4)}.service-header{margin-top:90px;padding:80px 0 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img{width:100%;height:100%;object-fit:cover;border-radius:8px}.footer{padding:50px 0 30px;position:relative;background:#2c3e50;overflow:hidden;text-align:center;color:#fff}.footer-bg-network{position:absolute;bottom:0;left:0;width:40%;height:100%;background-image:url('https://aitechworld.info/wp-content/uploads/2025/12/Mask-group-1.png');background-repeat:no-repeat;background-position:bottom left;background-size:contain;opacity:.2;z-index:1}.footer .container{position:relative;z-index:2}.footer-logo{display:flex;align-items:center;justify-content:center;margin-bottom:20px}.footer-logo img{max-width:300px;width:100%;height:auto}.footer-copy{display:flex;align-items:center;justify-content:center}.footer-copy img{max-width:250px;width:100%;height:auto;opacity:.8}@media screen and (max-width:768px){.container{padding:0 20px}.header-inner{flex-wrap:wrap;justify-content:center;gap:15px}.header-logo{width:100%;text-align:center}.nav-list{gap:25px}.header-cta{width:100%}.btn-cta{width:100%}.service-title{font-size:4rem}.case-card{grid-template-columns:1fr}.case-image{order:-1}}.case-detail{padding:60px 0 80px;background:#fff}.case-meta{display:flex;align-items:center;margin-bottom:30px;gap:20px;flex-wrap:wrap}.case-tags{display:flex;gap:10px;flex-wrap:wrap}.tag{background:linear-gradient(135deg,#06c 0%,#0052a3 100%);color:#fff;padding:8px 20px;border-radius:6px;font-size:.95rem;font-weight:500}.case-date{color:#666;font-size:1.1rem;font-weight:500}.case-detail .case-title{font-size:2.2rem;color:#06c;margin-bottom:40px;line-height:1.4;text-align:center}.case-detail .case-image{width:100%;margin-bottom:50px;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.1);max-height:350px}.case-detail .case-image img{width:100%;height:100%;object-fit:cover;display:block}.case-detail .case-content{background:#fff;padding:50px;border-radius:12px}.case-detail .case-content h2{font-size:1.6rem;color:#1a3a5c;margin-bottom:20px;padding-left:20px;text-align:left;margin-top:40px;border-left:4px solid #06c;border-bottom:none}.case-detail .case-content h2:first-child{margin-top:0}.case-detail .case-content .feature-section{background:rgba(173,216,230,.3);padding:30px;border-radius:8px;margin:20px 0;border:1px solid rgba(173,216,230,.5)}.case-detail .case-content .feature-section h2{color:#1a3a5c;border-left-color:#06c;margin-top:0}.case-detail .case-content .feature-section p,.case-detail .case-content .feature-section ul,.case-detail .case-content .feature-section ul li{color:#555}.case-detail .case-content .feature-section ul li:before{color:#06c}.case-detail .case-content p{font-size:1.15rem;line-height:2;color:#555;margin-bottom:15px;text-align:left}.case-detail .case-content ul{list-style:none;padding-left:0;margin-bottom:20px}.case-detail .case-content ul li{font-size:1.15rem;line-height:2;color:#555;padding-left:30px;position:relative;margin-bottom:12px;text-align:left}.case-detail .case-content ul li:before{content:"✓";position:absolute;left:0;color:#1a3a5c;font-weight:700;font-size:1.2rem}.case-back{margin-top:50px;text-align:left}.btn-back{display:inline-block;background:linear-gradient(135deg,#06c 0%,#0052a3 100%);color:#fff;padding:14px 30px;border-radius:4px;text-decoration:none;font-weight:600;transition:transform .3s;text-align:left}.btn-back:hover{transform:translateY(-2px)}@media (max-width:768px){.case-detail .case-title{font-size:1.6rem}.case-detail .case-content{padding:30px 20px}.case-detail .case-content h2{font-size:1.3rem}.case-detail .case-content p,.case-detail .case-content ul li{font-size:1rem}}