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0}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Microsoft YaHei,Arial,sans-serif;line-height:1.6;color:var(--text-color);background-color:var(--white);overflow-x:hidden}body.menu-open{overflow:hidden}a{text-decoration:none;color:inherit;transition:var(--transition)}ol,ul{list-style-type:none}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 1.5rem}img{max-width:100%;height:auto}.btn{display:inline-block;padding:12px 28px;background-color:var(--primary-color);color:var(--white);border-radius:4px;font-weight:500;transition:var(--transition);text-align:center;letter-spacing:.5px;border:none;cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.2)}.btn:hover{background-color:var(--secondary-color);transform:translateY(-3px);box-shadow:0 6px 15px rgba(0,0,0,.2)}header{background-color:var(--white);box-shadow:var(--shadow);position:sticky;top:0;z-index:1000}.header-content{display:flex;justify-content:space-between;align-items:center;padding:.5rem 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.nav-list{font-size:.85rem}html[lang=en] .nav-item>a{padding:1.25rem .5rem;font-size:.85rem}html[lang=en] .nav-item:nth-child(3)>a,html[lang=en] .nav-item:nth-child(4)>a,html[lang=en] .nav-item:nth-child(5)>a{font-size:.8rem}html[lang=en] .search-box input{width:140px;font-size:.8rem}html[lang=en] .search-box button{padding:6px 10px}html[lang=en] .language-switch{font-size:.8rem}}@media (max-width:768px){html[lang=en] .nav-item>a{padding:1rem 0;font-size:1rem;border-bottom:1px solid var(--border-color);display:block;width:100%}html[lang=en] .nav-item:nth-child(3)>a,html[lang=en] .nav-item:nth-child(4)>a,html[lang=en] .nav-item:nth-child(5)>a{font-size:1rem}}.hero{height:600px;position:relative;background-color:var(--light-bg);overflow:hidden}.hero-slider{height:100%;position:relative}.slide{position:absolute;top:0;left:0;width:100%;height:100%;background-size:cover;background-position:50%;opacity:0;transition:opacity 1.5s ease,transform 1.5s 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var(--border-color);font-weight:600}.category-column ul{list-style:none;padding:0}.category-column ul li{margin-bottom:.5rem}.category-column ul li:last-child{margin-bottom:0}.category-column ul li a{color:var(--text-color);display:block;padding:.5rem 0;transition:var(--transition);border-bottom:1px dashed var(--border-color)}.category-column ul li a:hover{color:var(--primary-color);padding-left:.5rem;background-color:rgba(37,99,235,.05);border-radius:4px}.product-applications{padding:var(--section-padding)}.product-applications h2{text-align:center;font-size:2.25rem;color:var(--text-color);margin-bottom:2.5rem;position:relative;font-weight:600}.product-applications h2:after{content:"";position:absolute;bottom:-12px;left:50%;transform:translateX(-50%);width:80px;height:4px;background-color:var(--primary-color);border-radius:2px}.applications-slider{display:flex;flex-wrap:wrap;justify-content:center;gap:1.5rem}.application-card{width:240px;background-color:var(--white);border-radius:8px;padding:2rem 1.5rem;text-align:center;box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border-color)}.application-card:hover{transform:translateY(-10px);box-shadow:var(--card-shadow)}.application-icon{display:flex;align-items:center;justify-content:center;width:80px;height:80px;background-color:rgba(37,99,235,.1);border-radius:50%;margin:0 auto 1.5rem;color:var(--primary-color);font-size:2.25rem;transition:var(--transition)}.application-card:hover .application-icon{background-color:var(--primary-color);color:var(--white);transform:scale(1.1)}.application-card h3{font-size:1.25rem;color:var(--text-color);margin-bottom:1rem;font-weight:600}.application-card p{color:var(--text-color);font-size:.9rem;line-height:1.6}@media (max-width:768px){.header-content{flex-wrap:wrap}.logo{order:1}.main-nav{order:3;width:100%;margin:15px 0 0}.search-lang{order:2}.mobile-menu-toggle{display:flex}.nav-list{flex-direction:column;display:none;width:100%}.nav-list.mobile-active{display:flex}.nav-item>a{padding:1rem 0;border-bottom:1px solid var(--border-color)}.dropdown-content,.mega-menu{position:static;width:100%;box-shadow:none;opacity:1;visibility:visible;transform:none;padding:0;max-height:0;overflow:hidden;transition:max-height .3s ease}.dropdown-content.mega-menu{flex-direction:column}.nav-item.active .dropdown-content{max-height:1000px;padding:.5rem 0 .5rem 1rem}.dropdown-group{padding:.5rem 0}.dropdown-group h4{font-size:1rem}}.main-content{margin-top:60px;min-height:calc(100vh - 360px)}.page-header{background-color:var(--light-bg);padding:60px 0 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p{font-size:14px;line-height:1.6;color:hsla(0,0%,100%,.8);margin-bottom:20px}.qr-code{flex-direction:column;margin-top:20px}.qr-code,.qr-placeholder{display:flex;align-items:center}.qr-placeholder{width:100px;height:100px;background-color:#fff;border-radius:8px;margin-bottom:10px;justify-content:center;font-size:12px;text-align:center;color:#666}.footer-column h3{font-size:18px;margin-bottom:20px;font-weight:600;color:#fff;position:relative}.footer-column h3:after{content:"";position:absolute;bottom:-8px;left:0;width:40px;height:2px;background-color:var(--accent-color)}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin-bottom:12px}.footer-links a{color:hsla(0,0%,100%,.8);text-decoration:none;font-size:14px;transition:color .3s}.footer-links a:hover{color:var(--accent-color);text-decoration:underline}.footer-bottom{border-top:1px solid hsla(0,0%,100%,.1);padding-top:20px;text-align:center}.footer-bottom p{font-size:14px;color:hsla(0,0%,100%,.6)}.text-center{text-align:center}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.mb-4{margin-bottom:2rem}.mb-5{margin-bottom:3rem}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}.mt-5{margin-top:3rem}@media (max-width:992px){.footer-content{flex-direction:column}.footer-column{width:100%;padding-right:0}.hero{height:500px}.slide-content h1{font-size:2.5rem}}@media (max-width:768px){.hero{height:400px}.slide-content h1{font-size:2rem}.application-card{width:calc(50% - 1rem)}.category-column{flex:none;width:100%}footer{padding:40px 0 15px}.footer-column h3{margin-top:20px}}.placeholder-image{width:100%;height:300px;background-color:#ddd;display:flex;align-items:center;justify-content:center;color:#666;font-weight:700;border-radius:5px}.news-image .placeholder-image{height:200px}