*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#1a3a6b;
  --accent:#2b7de9;
  --accent-light:#e8f0fe;
  --gold:#c5a55a;
  --green:#22a06b;
  --dark:#1a1a2e;
  --text:#333;
  --muted:#666;
  --bg:#f8f9fb;
  --white:#fff;
  --radius:8px;
  --shadow:0 2px 16px rgba(0,0,0,.08);
}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);line-height:1.7;background:var(--white)}
a{text-decoration:none;color:inherit}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid #eee;transition:box-shadow .3s}
nav.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.1)}
.nav-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:64px}
.logo{font-size:20px;font-weight:700;color:var(--primary);display:flex;align-items:center;gap:8px}
.logo span{color:var(--accent)}
.logo-text{font-size:18px;font-weight:600;color:var(--primary);white-space:nowrap}
.logo-img{height:32px;width:auto}
.nav-links{display:flex;gap:28px;list-style:none}
.nav-links a{font-size:15px;color:var(--muted);transition:color .25s;font-weight:500;position:relative;padding:4px 0}
.nav-links a::after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--accent);transition:width .25s}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-cta{background:var(--accent);color:#fff;padding:9px 22px;border-radius:24px;font-size:14px;font-weight:500;transition:background .25s,transform .25s}
.nav-cta:hover{background:#1a6ad4;transform:translateY(-1px)}
.mobile-menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.mobile-menu-btn span{width:24px;height:2px;background:var(--primary);transition:all .3s}
.mobile-menu-btn.active span:nth-child(1){transform:rotate(45deg) translateY(7px)}
.mobile-menu-btn.active span:nth-child(2){opacity:0}
.mobile-menu-btn.active span:nth-child(3){transform:rotate(-45deg) translateY(-7px)}

/* HERO */
.hero{padding:140px 24px 80px;background:linear-gradient(135deg,var(--primary) 0%,#0d2240 100%);color:#fff;text-align:center;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-50%;right:-20%;width:600px;height:600px;border-radius:50%;background:rgba(43,125,233,.15)}
.hero::after{content:"";position:absolute;bottom:-30%;left:-10%;width:400px;height:400px;border-radius:50%;background:rgba(197,165,90,.08)}
.hero h1{font-size:42px;font-weight:800;margin-bottom:16px;position:relative;z-index:1}
.hero p{font-size:18px;opacity:.85;max-width:640px;margin:0 auto 32px;position:relative;z-index:1}
.hero-stats{display:flex;justify-content:center;gap:60px;position:relative;z-index:1}
.hero-stats .stat-num{font-size:36px;font-weight:800;color:var(--gold)}
.hero-stats .stat-label{font-size:14px;opacity:.7;margin-top:4px}
.hero-en{font-size:14px;opacity:.5;margin-top:20px;letter-spacing:2px;position:relative;z-index:1}

/* SECTIONS */
section{padding:80px 24px;scroll-margin-top:80px}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:30px;font-weight:700;color:var(--primary);margin-bottom:8px}
.section-title p{color:var(--muted);font-size:15px;margin-bottom:6px}
.section-title .en{font-size:12px;color:#aaa;text-transform:uppercase;letter-spacing:3px}

/* ABOUT */
.about{background:var(--white)}
.about-content{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-text p{margin-bottom:16px;font-size:15px;color:var(--text);text-align:justify}
.about-highlights{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.about-highlights .h-item{background:var(--accent-light);padding:16px;border-radius:var(--radius);text-align:center}
.about-highlights .h-item .h-num{font-size:28px;font-weight:800;color:var(--accent)}
.about-highlights .h-item .h-label{font-size:13px;color:var(--muted);margin-top:4px}
.about-image{background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:12px;padding:40px;color:#fff;text-align:center;min-height:300px;display:flex;flex-direction:column;justify-content:center}
.about-image h3{font-size:22px;margin-bottom:12px}
.about-image p{font-size:14px;opacity:.8}

/* ADVANTAGES */
.advantages{background:var(--bg)}
.adv-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.adv-card{background:var(--white);padding:32px;border-radius:12px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.adv-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.adv-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}
.adv-icon.blue{background:#e8f0fe;color:var(--accent)}
.adv-icon.gold{background:#fdf6e3;color:var(--gold)}
.adv-icon.green{background:#e8f8f0;color:var(--green)}
.adv-card h3{font-size:18px;margin-bottom:12px;color:var(--primary)}
.adv-card p{font-size:14px;color:var(--muted);line-height:1.8}
.adv-card ul{list-style:none;margin-top:8px}
.adv-card ul li{font-size:14px;color:var(--muted);padding:4px 0;padding-left:16px;position:relative}
.adv-card ul li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* SERVICES */
.services{background:var(--white)}
.svc-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.svc-card{background:var(--bg);border:1px solid #eee;border-radius:12px;padding:24px;text-align:center;transition:all .3s}
.svc-card:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-2px)}
.svc-card .svc-icon{font-size:28px;margin-bottom:12px}
.svc-card h4{font-size:15px;color:var(--primary);margin-bottom:6px}
.svc-card p{font-size:12px;color:var(--muted)}
.svc-group{margin-bottom:32px}
.svc-group-title{max-width:1100px;margin:0 auto 16px;font-size:16px;font-weight:600;color:var(--primary);border-left:3px solid var(--accent);padding-left:12px}

/* SLIDE WRAPPER */
.slide-wrapper{max-width:1100px;margin:0 auto 32px;overflow:hidden;position:relative}
.slide-wrapper::before,.slide-wrapper::after{content:"";position:absolute;top:0;bottom:0;width:60px;z-index:2;pointer-events:none}
.slide-wrapper.bg-bg::before{left:0;background:linear-gradient(to right,var(--bg),transparent)}
.slide-wrapper.bg-bg::after{right:0;background:linear-gradient(to left,var(--bg),transparent)}
.slide-wrapper.bg-white::before{left:0;background:linear-gradient(to right,var(--white),transparent)}
.slide-wrapper.bg-white::after{right:0;background:linear-gradient(to left,var(--white),transparent)}
.slide-track{display:flex;gap:20px;width:max-content}
.slide-track.animate{animation:scroll-horizontal 25s linear infinite}
.slide-track.animate:hover{animation-play-state:paused}
.slide-track.reverse{animation-direction:reverse}
@keyframes scroll-horizontal{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* HONORS */
.honors{background:var(--bg)}
.honor-slide-wrapper{width:100%}
.honor-slide-track{gap:20px}
.honor-slide-track.animate{animation-duration:25s}
.honor-slide-track .honor-card{flex-shrink:0;width:calc((1100px - 80px) / 5);min-height:140px;background:var(--bg);border:1px solid #eee;border-radius:12px;display:flex;align-items:center;justify-content:center;padding:6px;transition:all .3s;position:relative;cursor:pointer}
.honor-slide-track .honor-card:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-4px) scale(1.08);z-index:10}
.honor-slide-track .honor-card .h-img{width:100%;max-height:150px;display:flex;align-items:center;justify-content:center}
.honor-slide-track .honor-card .h-img img{max-width:100%;max-height:100%;object-fit:contain}
.honor-slide-track .honor-card h4{font-size:14px;color:var(--primary);text-align:center;padding:10px 8px 2px}
.honor-slide-track .honor-card p{font-size:12px;color:var(--muted);text-align:center;padding:0 8px 12px}

/* PATENT */
.patent-slide-wrapper{width:100%}
.patent-slide-track{gap:20px}
.patent-slide-track.animate{animation-duration:25s}
.patent-slide-wrapper:hover .patent-slide-track.animate{animation-play-state:paused}
.patent-slide-track .patent-card{flex-shrink:0;width:calc((1100px - 100px) / 6);min-height:120px;background:var(--bg);border:1px solid #eee;border-radius:12px;display:flex;align-items:center;justify-content:center;padding:4px;transition:all .3s;cursor:pointer}
.patent-slide-track .patent-card:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-4px) scale(1.08);z-index:10}
.patent-slide-track .patent-card .p-img{width:100%;max-height:190px;display:flex;align-items:center;justify-content:center}
.patent-slide-track .patent-card .p-img img{max-width:100%;max-height:100%;object-fit:contain}

/* PARTNERS */
.partners{background:var(--white);overflow:hidden;position:relative}
.partner-track-wrapper{width:100%;max-width:1100px;margin:0 auto}
.partner-track{gap:24px}
.partner-track.animate{animation-duration:20s}
.partner-card{background:var(--bg);border-radius:12px;display:flex;align-items:center;justify-content:center;min-width:180px;height:80px;border:1px solid #eee;flex-shrink:0;transition:box-shadow .3s,transform .3s}
.partner-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.partner-card img{max-width:100%;max-height:100%;object-fit:contain;opacity:.85;transition:opacity .3s}
.partner-card:hover img{opacity:1}

/* CONTACT */
.contact{background:var(--bg)}
.contact-wrap{max-width:1100px;margin:0 auto;display:flex;flex-direction:column;align-items:center}
.contact-cards{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-bottom:40px;width:100%}
.contact-card{background:var(--white);border-radius:12px;padding:18px 16px;text-align:center;box-shadow:var(--shadow);border:1px solid #eef0f4;transition:transform .3s,box-shadow .3s}
.contact-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.contact-card .cc-icon{width:44px;height:44px;border-radius:12px;background:var(--accent-light);display:flex;align-items:center;justify-content:center;font-size:20px;margin:0 auto 12px}
.contact-card .cc-label{font-size:12px;color:var(--muted);margin-bottom:4px}
.contact-card .cc-value{font-size:14px;font-weight:600;color:var(--primary);line-height:1.5}
.contact-qr-box{background:var(--white);border-radius:16px;padding:32px 48px;box-shadow:0 2px 12px rgba(0,0,0,.04);border:1px solid #eef0f4;text-align:center}
.contact-qr-box .qr-title{font-size:15px;font-weight:600;color:var(--primary);margin-bottom:4px}
.contact-qr-box .qr-sub{font-size:12px;color:var(--muted);margin-bottom:16px}
.contact-qr-box img{width:180px;height:180px;border-radius:10px;display:block;margin:0 auto;background:#f5f5f5;padding:8px}
.contact-qr-box .qr-name{margin-top:10px;font-size:13px;color:var(--muted);font-weight:500}
@media(max-width:800px){
  .contact-cards{grid-template-columns:repeat(2,1fr)}
  .contact-qr-box img{width:160px;height:160px}
}
@media(max-width:500px){
  .contact-cards{grid-template-columns:1fr}
}

/* BACK TO TOP */
.back-to-top{position:fixed;bottom:32px;right:32px;width:50px;height:50px;border-radius:50%;background:transparent;color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:0 2px 8px rgba(43,125,233,.15);transition:all .3s;opacity:0;visibility:hidden;z-index:99}
.back-to-top.show{opacity:1;visibility:visible}
.back-to-top:hover{background:rgba(43,125,233,.1);color:var(--accent);transform:translateY(-2px)}

/* LIGHTBOX */
.lightbox-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.85);z-index:200;align-items:center;justify-content:center;padding:40px;opacity:0;transition:opacity .3s ease}
.lightbox-overlay.active{display:flex;opacity:1}
.lightbox-overlay img{max-width:90vw;max-height:90vh;object-fit:contain;border-radius:8px;box-shadow:0 0 40px rgba(0,0,0,.5)}
.lightbox-close{position:absolute;top:20px;right:24px;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.15);color:#fff;font-size:24px;display:flex;align-items:center;justify-content:center;transition:background .25s;cursor:pointer;border:none}
.lightbox-close:hover{background:rgba(255,255,255,.3)}

/* ANIMATION */
.fade-up{opacity:0;transform:translateY(30px);transition:opacity .6s,transform .6s}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* ACCESSIBILITY */
a:focus-visible,
button:focus-visible,
.nav-links a:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

@media(prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .slide-track.animate{
    animation: none;
  }
}

/* FOOTER */
footer{background:var(--primary);color:rgba(255,255,255,.5);text-align:center;padding:20px;font-size:13px}
footer span{color:var(--gold)}

/* RESPONSIVE */
@media(max-width:900px){
  .nav-links{position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--white);box-shadow:var(--shadow);padding:16px 24px;gap:12px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .3s}
  .nav-links.active{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-links li{padding:8px 0}
  .nav-links a{font-size:16px;color:var(--text)}
  .nav-links a::after{display:none}
  .nav-cta{display:none}
  .mobile-menu-btn{display:flex}
  .hero h1{font-size:28px}
  .hero p{font-size:15px}
  .hero-stats{gap:24px}
  .hero-stats .stat-num{font-size:28px}
  .hero-stats .stat-label{font-size:12px}
  .about-content{grid-template-columns:1fr}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .partner-card{min-width:150px}
  .honor-slide-track .honor-card{width:calc((100vw - 80px) / 3)}
  .patent-slide-track .patent-card{width:calc((100vw - 80px) / 4)}
}
@media(max-width:700px){
  .hero-stats{gap:16px}
  .hero-stats .stat-num{font-size:24px}
  .adv-grid{grid-template-columns:1fr}
  .honor-slide-track .honor-card{width:calc((100vw - 60px) / 2)}
  .patent-slide-track .patent-card{width:calc((100vw - 60px) / 3)}
}
@media(max-width:600px){
  .hero h1{font-size:24px}
  .hero-stats{flex-direction:column;gap:16px}
  .hero-stats > div{display:flex;align-items:center;justify-content:center;gap:12px}
  .hero-stats .stat-num{font-size:28px}
  .hero-stats .stat-label{font-size:14px;margin-top:0}
  .svc-grid{grid-template-columns:1fr}
  .partner-card{min-width:100px}
  .about-highlights{grid-template-columns:1fr}
  .honor-grid{grid-template-columns:1fr}
  .honor-slide-track .honor-card{width:calc((100vw - 48px) / 1.5)}
  .patent-slide-track .patent-card{width:calc((100vw - 48px) / 2)}
}
@media(max-width:450px){
  .partner-card{min-width:80px;height:60px}
  .honor-slide-track .honor-card{width:calc(100vw - 48px)}
  .patent-slide-track .patent-card{width:calc(100vw - 48px)}
}