*{margin:0;padding:0;box-sizing:border-box}body{font-family:Arial,sans-serif;line-height:1.6;color:#333;background-color:#f5f5f5}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}:root{--primary-color: #003366;--secondary-color: #E0E0E0;--background-color: #F5F5F5;--text-color: #333;--accent-color: #006699;--light-gray: #E5E5E5;--dark-gray: #666}.header{background-color:var(--primary-color);color:#fff;padding:20px 0;position:sticky;top:0;z-index:1000;box-shadow:0 2px 10px #0000001a}.header-content{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:15px}.logo img{height:50px;width:auto}.logo-text{font-size:18px;font-weight:700}.nav ul{display:flex;gap:30px;list-style:none}.nav a{color:#fff;text-decoration:none;font-size:14px;font-weight:500;transition:color .3s ease;position:relative}.nav a:hover,.nav a.active{color:var(--secondary-color)}.nav a.active:after{content:"";position:absolute;bottom:-5px;left:0;width:100%;height:2px;background-color:var(--secondary-color)}.hero{position:relative;height:600px;display:flex;align-items:center;background-color:var(--primary-color);background-image:url(https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=titanium%20tube%20manufacturing%20factory%20with%20modern%20industrial%20equipment%2C%20high-tech%20production%20line%2C%20blue%20lighting%2C%20metal%20texture%2C%20professional%20photography&image_size=landscape_16_9);background-size:cover;background-position:center;overflow:hidden}.hero-bg:after{content:"";position:absolute;bottom:0;right:0;width:200px;height:60px;background:linear-gradient(135deg,transparent 0%,rgba(0,51,102,.8) 100%);z-index:2}.image-container{position:relative;width:100%;overflow:hidden;border-radius:8px}.image-container img{width:100%;height:auto;display:block;clip-path:polygon(0 0,100% 0,100% 85%,85% 100%,0 100%)}.process-img .image-container img{clip-path:polygon(0 0,100% 0,100% 88%,88% 100%,0 100%)}.watermark-remove{display:none}.hero-content{position:relative;z-index:2;color:#fff;max-width:600px}.hero h1{font-size:48px;font-weight:700;margin-bottom:20px;line-height:1.2}.hero p{font-size:18px;margin-bottom:30px;opacity:.9}.hero-buttons{display:flex;gap:20px}.btn{display:inline-block;padding:12px 30px;border-radius:4px;font-size:16px;font-weight:500;text-decoration:none;transition:all .3s ease;border:2px solid transparent}.btn-primary{background-color:#fff;color:var(--primary-color)}.btn-primary:hover,.btn-secondary{background-color:transparent;color:#fff;border-color:#fff}.btn-secondary:hover{background-color:#fff;color:var(--primary-color)}.hero-bg{position:absolute;top:0;right:0;width:100%;height:100%;z-index:1;background-color:#00000080}.metal-texture{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(45deg,rgba(255,255,255,.05) 25%,transparent 25%,transparent 50%,rgba(255,255,255,.05) 50%,rgba(255,255,255,.05) 75%,transparent 75%,transparent);background-size:100px 100px;opacity:.3;z-index:2}section{padding:80px 0}.section-title{font-size:32px;font-weight:700;color:var(--primary-color);margin-bottom:40px;text-align:center;position:relative}.section-title:after{content:"";position:absolute;bottom:-10px;left:50%;transform:translate(-50%);width:100px;height:3px;background-color:var(--accent-color)}.about{background-color:#fff}.about-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:40px}.about-item{background-color:var(--background-color);padding:30px;border-radius:8px;box-shadow:0 2px 10px #0000000d;transition:transform .3s ease,box-shadow .3s ease}.about-item:hover{transform:translateY(-5px);box-shadow:0 5px 20px #0000001a}.about-item h3{font-size:20px;color:var(--primary-color);margin-bottom:20px;border-bottom:2px solid var(--accent-color);padding-bottom:10px}.about-image{margin-bottom:20px;text-align:center}.about-image img{max-width:100%;height:auto;border-radius:8px;box-shadow:0 2px 10px #0000001a}.about-item ul{list-style:none}.about-item li{margin-bottom:10px;padding-left:20px;position:relative}.about-item li:before{content:"•";position:absolute;left:0;color:var(--accent-color);font-weight:700}.products{background-color:var(--background-color)}.products-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:40px;margin-bottom:60px}.product-item{background-color:#fff;padding:30px;border-radius:8px;box-shadow:0 2px 10px #0000000d;transition:transform .3s ease,box-shadow .3s ease}.product-item:hover{transform:translateY(-5px);box-shadow:0 5px 20px #0000001a}.product-item h3{font-size:20px;color:var(--primary-color);margin-bottom:20px;border-bottom:2px solid var(--accent-color);padding-bottom:10px}.product-image{margin-bottom:20px;text-align:center}.product-image img{max-width:100%;height:auto;border-radius:8px;box-shadow:0 2px 10px #0000001a}.product-item ul{list-style:none}.product-item li{margin-bottom:10px;padding-left:20px;position:relative}.product-item li:before{content:"•";position:absolute;left:0;color:var(--accent-color);font-weight:700}.application-areas h3{font-size:24px;color:var(--primary-color);margin-bottom:30px;text-align:center}.application-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px}.application-item{background-color:#fff;padding:25px;border-radius:8px;box-shadow:0 2px 10px #0000000d;transition:transform .3s ease,box-shadow .3s ease}.application-item:hover{transform:translateY(-5px);box-shadow:0 5px 20px #0000001a}.application-item h4{font-size:18px;color:var(--primary-color);margin-bottom:15px;border-bottom:1px solid var(--light-gray);padding-bottom:10px}.application-item ul{list-style:none}.application-item li{margin-bottom:8px;padding-left:20px;position:relative;font-size:14px}.application-item li:before{content:"•";position:absolute;left:0;color:var(--accent-color);font-weight:700}.technology{background-color:#fff}.technology-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:40px;margin-bottom:60px}.tech-item{background-color:var(--background-color);padding:30px;border-radius:8px;box-shadow:0 2px 10px #0000000d;transition:transform .3s ease,box-shadow .3s ease}.tech-item:hover{transform:translateY(-5px);box-shadow:0 5px 20px #0000001a}.tech-item h3{font-size:20px;color:var(--primary-color);margin-bottom:20px;border-bottom:2px solid var(--accent-color);padding-bottom:10px}.tech-item p{margin-bottom:15px;font-weight:500}.tech-item ul{list-style:none}.tech-item li{margin-bottom:10px;padding-left:20px;position:relative}.tech-item li:before{content:"•";position:absolute;left:0;color:var(--accent-color);font-weight:700}.process-visualization{text-align:center}.process-visualization h3{font-size:24px;color:var(--primary-color);margin-bottom:30px}.process-img{background-color:var(--background-color);border-radius:8px;padding:40px;box-shadow:0 2px 10px #0000000d;text-align:center}.process-img img{max-width:100%;height:auto;border-radius:8px;box-shadow:0 2px 10px #0000001a}.placeholder-img{height:300px;display:flex;align-items:center;justify-content:center;background-color:var(--light-gray);border-radius:4px;color:var(--dark-gray);font-size:18px;position:relative;overflow:hidden}.placeholder-img:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(45deg,rgba(0,0,0,.05) 25%,transparent 25%,transparent 50%,rgba(0,0,0,.05) 50%,rgba(0,0,0,.05) 75%,transparent 75%,transparent);background-size:50px 50px}.quality{background-color:var(--background-color)}.quality-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:40px}.quality-item{background-color:#fff;padding:30px;border-radius:8px;box-shadow:0 2px 10px #0000000d;transition:transform .3s ease,box-shadow .3s ease}.quality-item:hover{transform:translateY(-5px);box-shadow:0 5px 20px #0000001a}.quality-item h3{font-size:20px;color:var(--primary-color);margin-bottom:20px;border-bottom:2px solid var(--accent-color);padding-bottom:10px}.quality-item h4{font-size:16px;color:var(--accent-color);margin:15px 0 10px}.quality-item ul{list-style:none}.quality-item li{margin-bottom:8px;padding-left:20px;position:relative;font-size:14px}.quality-item li:before{content:"•";position:absolute;left:0;color:var(--accent-color);font-weight:700}.contact{background-color:#fff}.contact-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:40px}.vision-item{background-color:var(--background-color);padding:30px;border-radius:8px;box-shadow:0 2px 10px #0000000d;transition:transform .3s ease,box-shadow .3s ease}.vision-item:hover{transform:translateY(-5px);box-shadow:0 5px 20px #0000001a}.vision-item h3{font-size:20px;color:var(--primary-color);margin-bottom:20px;border-bottom:2px solid var(--accent-color);padding-bottom:10px}.vision-item ul{list-style:none}.vision-item li{margin-bottom:10px;padding-left:20px;position:relative}.vision-item li:before{content:"•";position:absolute;left:0;color:var(--accent-color);font-weight:700}.contact-info{background-color:var(--primary-color);color:#fff;padding:30px;border-radius:8px;box-shadow:0 2px 10px #0000001a}.contact-info h3{font-size:20px;margin-bottom:20px;border-bottom:2px solid var(--secondary-color);padding-bottom:10px}.contact-info ul{list-style:none;margin-bottom:30px}.contact-info li{margin-bottom:15px;font-size:16px}.cooperation-message{background-color:#ffffff1a;padding:20px;border-radius:4px;text-align:center}.cooperation-message h4{font-size:18px;margin-bottom:10px}.cooperation-message p{font-size:16px;font-style:italic}.footer{background-color:var(--primary-color);color:#fff;padding:60px 0 30px}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:40px;margin-bottom:40px}.footer-logo{display:flex;flex-direction:column;align-items:center;gap:15px}.footer-logo img{height:60px;width:auto}.footer-logo span{font-size:16px;font-weight:700;text-align:center}.footer-links ul{list-style:none;display:flex;flex-direction:column;gap:10px}.footer-links a{color:#fff;text-decoration:none;font-size:14px;transition:color .3s ease}.footer-links a:hover{color:var(--secondary-color)}.footer-contact p{margin-bottom:10px;font-size:14px}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:30px;text-align:center;font-size:14px;opacity:.8}@media(max-width:768px){.header-content{flex-direction:column;gap:20px}.nav ul{gap:20px}.hero h1{font-size:36px}.hero p{font-size:16px}.hero-buttons{flex-direction:column;align-items:flex-start}.section-title{font-size:28px}section{padding:60px 0}.about-content,.products-content,.technology-content,.quality-content,.contact-content,.application-grid{grid-template-columns:1fr}}@media(max-width:480px){.hero{height:500px}.hero h1{font-size:28px}.section-title{font-size:24px}.about-item,.product-item,.tech-item,.quality-item,.vision-item,.contact-info{padding:20px}.footer-content{gap:30px}}
