:root{--primary:#1a365d;--primary-light:#2c5282;--accent:#3182ce;--accent-hover:#2b6cb0;--text-dark:#1a202c;--text-light:#718096;--text-white:#fff;--bg-white:#fff;--bg-light:#f7fafc;--bg-dark:#1a202c;--border:#e2e8f0;--section-padding:100px 0;--container-width:1200px;--transition:all 0.3s ease}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Noto Sans SC,Noto Sans JP,Segoe UI,sans-serif;color:var(--text-dark);line-height:1.6;background:var(--bg-white)}.container{max-width:var(--container-width);margin:0 auto;padding:0 20px}.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--bg-dark);padding:15px 0;transition:var(--transition)}.navbar .container{display:flex;justify-content:space-between;align-items:center}.navbar-logo{color:var(--text-white);font-size:1.5rem;font-weight:700;text-decoration:none}.navbar-nav{display:flex;list-style:none;gap:30px}.navbar-nav a{color:var(--text-white);text-decoration:none;font-size:.95rem;transition:var(--transition);opacity:.85}.navbar-nav a:hover{opacity:1;color:var(--accent)}.language-switcher{display:flex;gap:5px;margin-left:15px;padding-left:15px;border-left:1px solid hsla(0,0%,100%,.2)}.lang-btn{background:transparent;border:1px solid hsla(0,0%,100%,.3);color:var(--text-white);padding:5px 12px;border-radius:4px;font-size:.85rem;cursor:pointer;transition:var(--transition);opacity:.7}.lang-btn.active,.lang-btn:hover{opacity:1;border-color:var(--accent)}.lang-btn.active{background:var(--accent)}.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(rgba(26,54,93,.85),rgba(44,82,130,.85)),url(/image/banner.png);background-size:cover;background-position:50%;background-attachment:fixed;color:var(--text-white);text-align:center;position:relative;overflow:hidden}.hero-content{position:relative;z-index:1;max-width:800px;padding:0 20px}.hero h1{font-size:3.5rem;font-weight:700;margin-bottom:20px;animation:fadeInUp .8s ease}.hero .slogan{font-size:1.5rem;opacity:.9;margin-bottom:15px;animation:fadeInUp .8s ease .2s backwards}.hero .subtitle{font-size:1.1rem;opacity:.8;max-width:600px;margin:0 auto 30px;animation:fadeInUp .8s ease .4s backwards}.hero-btn{display:inline-block;padding:15px 40px;background:var(--accent);color:var(--text-white);text-decoration:none;border-radius:50px;font-weight:600;transition:var(--transition);animation:fadeInUp .8s ease .6s backwards}.hero-btn:hover{background:var(--accent-hover);transform:translateY(-3px);box-shadow:0 10px 30px rgba(0,0,0,.2)}.section{padding:var(--section-padding)}.section-light{background:var(--bg-light)}.section-title{text-align:center;margin-bottom:60px}.section-title h2{font-size:2.5rem;color:var(--text-dark);margin-bottom:15px}.section-title p{color:var(--text-light);font-size:1.1rem}.section-title .en-title{font-size:.9rem;color:var(--accent);text-transform:uppercase;letter-spacing:3px;margin-bottom:10px}.about-content{display:grid;grid-template-columns:1fr 1fr;grid-gap:60px;gap:60px;align-items:center}.about-text h3{font-size:1.8rem;margin-bottom:20px;color:var(--primary)}.about-text p{color:var(--text-light);margin-bottom:15px;line-height:1.8}.about-highlights{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:20px;gap:20px}.highlight-item{background:var(--bg-white);padding:30px;border-radius:10px;box-shadow:0 5px 20px rgba(0,0,0,.05);transition:var(--transition)}.highlight-item:hover{transform:translateY(-5px);box-shadow:0 10px 30px rgba(0,0,0,.1)}.highlight-item h4{font-size:2rem;color:var(--accent);margin-bottom:5px}.highlight-item p{color:var(--text-light);font-size:.9rem}.services-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:30px;gap:30px}.service-card{background:var(--bg-white);border-radius:15px;overflow:hidden;box-shadow:0 5px 20px rgba(0,0,0,.08);transition:var(--transition)}.service-card:hover{transform:translateY(-10px);box-shadow:0 15px 40px rgba(0,0,0,.12)}.service-card img{width:100%;height:auto;display:block}.service-card-content{padding:25px}.service-card-content h3{font-size:1.3rem;margin-bottom:10px;color:var(--primary)}.service-card-content p{color:var(--text-light);font-size:.95rem}.timeline{position:relative;max-width:800px;margin:0 auto}.timeline:before{content:"";position:absolute;left:50%;transform:translateX(-50%);width:3px;height:100%;background:var(--accent)}.timeline-item{display:flex;margin-bottom:40px;position:relative}.timeline-item:nth-child(odd){flex-direction:row-reverse;text-align:right}.timeline-content{width:45%;padding:25px;background:var(--bg-white);border-radius:10px;box-shadow:0 5px 20px rgba(0,0,0,.08);position:relative}.timeline-date{font-size:.9rem;color:var(--accent);font-weight:600;margin-bottom:10px}.timeline-content h3{font-size:1.2rem;color:var(--primary);margin-bottom:10px}.timeline-content p{color:var(--text-light);font-size:.95rem}.timeline-dot{position:absolute;left:50%;transform:translateX(-50%);width:20px;height:20px;background:var(--accent);border-radius:50%;border:4px solid var(--bg-white);z-index:1}.partners-image{text-align:center}.partners-image img{max-width:100%;height:auto;border-radius:15px;box-shadow:0 10px 40px rgba(0,0,0,.1)}.contact-wrapper{display:grid;grid-template-columns:1fr 1fr;grid-gap:60px;gap:60px}.contact-info h3{font-size:1.8rem;margin-bottom:30px;color:var(--primary)}.contact-item{display:flex;align-items:flex-start;margin-bottom:25px}.contact-icon{width:50px;height:50px;background:var(--accent);color:var(--text-white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;margin-right:20px;flex-shrink:0}.contact-item-content h4{font-size:1.1rem;margin-bottom:5px;color:var(--text-dark)}.contact-item-content p{color:var(--text-light)}.contact-form{background:var(--bg-white);padding:40px;border-radius:15px;box-shadow:0 10px 40px rgba(0,0,0,.08)}.contact-form h3{font-size:1.5rem;margin-bottom:25px;color:var(--primary)}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;color:var(--text-dark);font-weight:500}.form-group input,.form-group textarea{width:100%;padding:15px;border:1px solid var(--border);border-radius:8px;font-size:1rem;transition:var(--transition);font-family:inherit}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(49,130,206,.1)}.form-group textarea{resize:vertical;min-height:120px}.submit-btn{width:100%;padding:15px 30px;background:var(--accent);color:var(--text-white);border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition)}.submit-btn:hover{background:var(--accent-hover)}.footer{background:var(--bg-dark);color:var(--text-white);padding:40px 0;text-align:center}.footer p{opacity:.8;font-size:.9rem}.main-business-section{background:url(/image/major-business-v2.png);background-size:cover;background-position:50%;color:var(--text-white);padding:80px 0}.main-business-overlay{position:relative}.main-business-section .section-title{margin-bottom:50px}.main-business-section .section-title h2{color:var(--text-white);font-size:2.5rem;margin-bottom:10px}.main-business-section .section-title .en-title{color:hsla(0,0%,100%,.7)}.main-business-content{display:flex;justify-content:center;gap:0;margin-bottom:40px;position:relative}.main-business-content:before{content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;background:hsla(0,0%,100%,.5)}.business-column{flex:1 1;padding:30px 50px;max-width:500px}.business-header{background:rgba(49,130,206,.8);color:var(--text-white);padding:10px 30px;font-weight:500;font-size:1rem;margin-bottom:25px;display:inline-block}.business-list{list-style:none;padding:0;margin:0}.business-list li{padding:10px 0;font-size:.95rem;transition:var(--transition)}.business-list li:hover{padding-left:10px}.main-business-divider{width:100%;height:1px;background:hsla(0,0%,100%,.5);margin-bottom:30px}.main-business-bottom{display:flex;justify-content:center;gap:60px}.bottom-item{text-align:center;font-weight:400;font-size:.95rem;transition:var(--transition)}.bottom-item:hover{transform:translateY(-3px)}.advantages-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:30px;gap:30px}.advantage-card{background:var(--bg-white);border-radius:15px;overflow:hidden;box-shadow:0 5px 20px rgba(0,0,0,.08);transition:var(--transition)}.advantage-card:hover{transform:translateY(-10px);box-shadow:0 15px 40px rgba(0,0,0,.12)}.advantage-image{height:180px;display:flex;align-items:center;justify-content:center}.advantage-image-1{background:url(/image/advantage-quality.png) 50%/cover no-repeat}.advantage-image-2{background:url(/image/advantage-process.png) 50%/cover no-repeat}.advantage-image-3{background:url(/image/advantage-experience.png) 50%/cover no-repeat}.advantage-image .big-number{font-size:4rem;font-weight:700;color:var(--text-white)}.advantage-card h3{font-size:1.2rem;color:var(--primary);padding:20px 20px 10px;text-align:center}.advantage-card p{color:var(--text-light);font-size:.9rem;padding:0 20px 20px;line-height:1.7}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@media (max-width:992px){.about-content{grid-template-columns:1fr;gap:40px}.services-grid{max-width:400px;margin:0 auto}.advantages-grid,.contact-wrapper,.main-business-bottom,.main-business-content,.services-grid{grid-template-columns:1fr}.advantages-grid{max-width:400px;margin:0 auto}}@media (max-width:768px){.navbar-nav{display:none}.hero h1{font-size:2.5rem}.hero .slogan{font-size:1.2rem}.section-title h2{font-size:2rem}.about-highlights{grid-template-columns:1fr}.timeline:before{left:20px}.timeline-item,.timeline-item:nth-child(odd){flex-direction:row;text-align:left}.timeline-content{width:calc(100% - 60px);margin-left:50px}.timeline-dot{left:20px}}@media (max-width:480px){.hero h1{font-size:2rem}:root{--section-padding:60px 0}.highlight-item{padding:20px}}