*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{color:#333;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.navbar{z-index:100;justify-content:space-between;align-items:center;height:70px;padding:0 40px;transition:background .3s,box-shadow .3s;display:flex;position:fixed;top:0;left:0;right:0}.navbar.scrolled{background:#fffffffa;box-shadow:0 2px 20px #00000014}.navbar .logo{color:#fff;font-size:22px;font-weight:700;transition:color .3s}.navbar.scrolled .logo{color:#1a73e8}.navbar .nav-links{gap:32px;display:flex}.navbar .nav-links a{color:#ffffffe6;font-size:15px;font-weight:500;transition:color .3s}.navbar.scrolled .nav-links a{color:#555}.navbar .nav-links a:hover{color:#1a73e8}.navbar .menu-btn{cursor:pointer;background:0 0;border:none;padding:8px;display:none}.navbar .menu-btn span{background:#fff;width:24px;height:2px;margin:5px 0;transition:all .3s;display:block}.navbar.scrolled .menu-btn span{background:#333}.hero{width:100%;position:relative;overflow:hidden}.hero-img{object-fit:cover;width:100%;height:auto;display:block}.mobile-img{display:none}.section{padding:100px 40px}.section-title{text-align:center;margin-bottom:60px}.section-title h2{color:#1a1a2e;margin-bottom:12px;font-size:36px;font-weight:700}.section-title p{color:#888;font-size:16px}.section-title .line{background:#1a73e8;border-radius:2px;width:50px;height:3px;margin:16px auto 0}.about{background:#f8f9fb}.about-grid{grid-template-columns:1fr 1fr;align-items:center;gap:60px;max-width:1100px;margin:0 auto;display:grid}.about-text h3{color:#1a1a2e;margin-bottom:20px;font-size:28px;font-weight:700}.about-text p{color:#666;margin-bottom:16px;line-height:1.8}.about-stats{gap:40px;margin-top:30px;display:flex}.about-stats .stat{text-align:center}.about-stats .stat .num{color:#1a73e8;font-size:36px;font-weight:800}.about-stats .stat .label{color:#999;margin-top:4px;font-size:14px}.about-image{background:linear-gradient(135deg,#e8f0fe,#d2e3fc);border-radius:16px;justify-content:center;align-items:center;height:400px;font-size:80px;display:flex}.products-grid{grid-template-columns:repeat(3,1fr);gap:30px;max-width:1100px;margin:0 auto;display:grid}.product-card{background:#fff;border-radius:12px;transition:transform .3s,box-shadow .3s;overflow:hidden;box-shadow:0 4px 20px #0000000f}.product-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px #0000001f}.product-card .img{background:linear-gradient(135deg,#e8f0fe,#d2e3fc);justify-content:center;align-items:center;height:200px;font-size:60px;display:flex}.product-card .info{padding:24px}.product-card .info h3{margin-bottom:8px;font-size:18px;font-weight:700}.product-card .info p{color:#888;font-size:14px;line-height:1.6}.advantages{background:#f8f9fb}.adv-grid{grid-template-columns:repeat(4,1fr);gap:30px;max-width:1100px;margin:0 auto;display:grid}.adv-card{text-align:center;background:#fff;border-radius:12px;padding:40px 24px;transition:transform .3s}.adv-card:hover{transform:translateY(-4px)}.adv-card .icon{color:#fff;background:linear-gradient(135deg,#1a73e8,#4a9af5);border-radius:16px;justify-content:center;align-items:center;width:64px;height:64px;margin:0 auto 20px;font-size:28px;display:flex}.adv-card h3{margin-bottom:10px;font-size:18px;font-weight:700}.adv-card p{color:#888;font-size:14px;line-height:1.6}.contact-grid{grid-template-columns:1fr 1fr;gap:60px;max-width:1100px;margin:0 auto;display:grid}.contact-info .item{gap:16px;margin-bottom:28px;display:flex}.contact-info .item .icon{background:#e8f0fe;border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;font-size:22px;display:flex}.contact-info .item h4{margin-bottom:4px;font-size:16px;font-weight:600}.contact-info .item p{color:#888;font-size:14px}.contact-form{background:#f8f9fb;border-radius:16px;padding:40px}.contact-form .field{margin-bottom:20px}.contact-form .field label{color:#555;margin-bottom:8px;font-size:14px;font-weight:600;display:block}.contact-form .field input,.contact-form .field textarea{border:1px solid #e0e0e0;border-radius:8px;outline:none;width:100%;padding:12px 16px;font-family:inherit;font-size:14px;transition:border-color .3s}.contact-form .field input:focus,.contact-form .field textarea:focus{border-color:#1a73e8}.contact-form .field textarea{resize:vertical;height:120px}.contact-form .submit-btn{color:#fff;cursor:pointer;background:#1a73e8;border:none;border-radius:8px;width:100%;padding:14px;font-size:16px;font-weight:600;transition:background .3s}.contact-form .submit-btn:hover{background:#1557b0}.footer{color:#ffffffb3;background:#1a1a2e;padding:60px 40px 30px}.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;max-width:1100px;margin:0 auto 40px;display:grid}.footer h3{color:#fff;margin-bottom:16px;font-size:18px}.footer p{font-size:14px;line-height:1.8}.footer ul{list-style:none}.footer ul li{margin-bottom:10px}.footer ul li a{font-size:14px;transition:color .3s}.footer ul li a:hover{color:#fff}.footer-bottom{text-align:center;border-top:1px solid #ffffff1a;max-width:1100px;margin:0 auto;padding-top:24px;font-size:13px}@media (width<=768px){.navbar{padding:0 20px}.navbar .nav-links{background:#fff;flex-direction:column;gap:0;padding:20px;display:none;position:fixed;top:70px;left:0;right:0;box-shadow:0 4px 20px #0000001a}.navbar .nav-links.open{display:flex}.navbar .nav-links a{color:#333;border-bottom:1px solid #f0f0f0;padding:12px 0}.navbar .menu-btn{display:block}.pc-img{display:none}.mobile-img{display:block}.section{padding:60px 20px}.section-title h2{font-size:26px}.about-grid{grid-template-columns:1fr}.about-image{height:250px}.products-grid{grid-template-columns:1fr}.adv-grid{grid-template-columns:1fr 1fr}.contact-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}}
