:root{--primary-color:#2563EB;--secondary-color:#1E40AF;--accent-color:#F59E0B;--text-color:#333333;--light-text:#666666;--background-light:#F9FAFB;--white:#FFFFFF;--border-color:#E5E7EB;--max-width:1200px;--header-height:80px;--transition:all 0.3s ease}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.6;color:var(--text-color);background-color:var(--white);-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit;transition:var(--transition)}ul{list-style:none}img{max-width:100%;height:auto;display:block}.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}.btn{display:inline-block;padding:12px 30px;border-radius:30px;font-weight:600;cursor:pointer;transition:var(--transition)}.btn-primary{background-color:var(--primary-color);color:var(--white)}.btn-primary:hover{background-color:var(--secondary-color);transform:translateY(-2px);box-shadow:0 4px 12px rgba(37,99,235,0.3)}.header{position:fixed;top:0;left:0;width:100%;height:var(--header-height);background-color:rgba(255,255,255,0.95);backdrop-filter:blur(10px);box-shadow:0 2px 10px rgba(0,0,0,0.05);z-index:1000;display:flex;align-items:center}.header-container{display:flex;justify-content:space-between;align-items:center;width:100%}.logo a{font-size:24px;font-weight:700;color:var(--primary-color);letter-spacing:1px}.nav-list{display:flex;gap:30px}.nav-list li a{font-size:16px;font-weight:500;color:var(--text-color);position:relative}.nav-list li a:hover,.nav-list li a.active{color:var(--primary-color)}.nav-list li 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p{margin-bottom:20px;font-size:16px;color:var(--light-text);text-align:justify}.about-image img{border-radius:12px;box-shadow:0 20px 40px rgba(0,0,0,0.1);width:100%;object-fit:cover}.product-card{background:var(--white);border-radius:20px;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,0.05);display:flex;flex-direction:row}.product-image{flex:1;min-height:400px}.product-image img{width:100%;height:100%;object-fit:cover}.product-info{flex:1;padding:60px;display:flex;flex-direction:column;justify-content:center}.product-info h3{font-size:32px;margin-bottom:10px}.product-tag{display:inline-block;background-color:rgba(37,99,235,0.1);color:var(--primary-color);padding:5px 15px;border-radius:20px;font-size:14px;font-weight:600;margin-bottom:20px;width:fit-content}.product-info p{color:var(--light-text);font-size:16px;line-height:1.8}.culture-content{display:flex;flex-direction:column;gap:50px}.culture-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.culture-card{background:var(--white);padding:40px 30px;border-radius:12px;text-align:center;border:1px solid var(--border-color);transition:var(--transition)}.culture-card:hover{transform:translateY(-10px);box-shadow:0 15px 30px rgba(0,0,0,0.1);border-color:transparent}.culture-card .icon{font-size:40px;margin-bottom:20px}.culture-card h3{font-size:20px;margin-bottom:15px}.culture-card p{color:var(--light-text)}.culture-image-large img{border-radius:12px;width:100%;max-height:500px;object-fit:cover}.csr-container{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}.csr-image img{border-radius:12px;box-shadow:0 20px 40px 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(max-width:768px){.header{height:60px}.mobile-menu-toggle{display:flex}.nav{position:absolute;top:60px;left:0;width:100%;background-color:var(--white);padding:20px;box-shadow:0 10px 20px rgba(0,0,0,0.05);transform:translateY(-150%);transition:var(--transition);z-index:999}.nav.active{transform:translateY(0)}.nav-list{flex-direction:column;align-items:center;gap:20px}.hero h1{font-size:32px}.about-grid,.product-card,.culture-grid,.csr-container,.footer-grid{grid-template-columns:1fr;flex-direction:column}.product-image{min-height:250px}.product-info{padding:30px}.section{padding:60px 0}.section-header{margin-bottom:40px}.section-title{font-size:28px}.hero h1{font-size:36px;line-height:1.2}.hero .subtitle{font-size:20px}.hero .description{font-size:16px;padding:0 10px}.mobile-menu-toggle.active .bar:nth-child(1){transform:translateY(8px) rotate(45deg)}.mobile-menu-toggle.active .bar:nth-child(2){opacity:0}.mobile-menu-toggle.active .bar:nth-child(3){transform:translateY(-8px) rotate(-45deg)}}@media (max-width:480px){.container{padding:0 15px}.product-info{padding:20px}.hero h1{font-size:32px}.btn{width:100%;text-align:center}}