:root{font-family:Noto Sans SC,Inter,system-ui,-apple-system,Segoe UI,sans-serif;line-height:1.6;font-weight:400;color:#2a2a2a;background-color:#fcfcfc;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;--bg: #fcfcfc;--surface: #ffffff;--surface-soft: #f7f7f7;--text-primary: #2a2a2a;--text-muted: #767676;--accent: #767676;--accent-strong: #565656;--accent-soft: rgba(118, 118, 118, .12);--border: rgba(0, 0, 0, .08);--shadow: 0 20px 60px rgba(0, 0, 0, .08);--shadow-soft: 0 10px 30px rgba(0, 0, 0, .05)}*{box-sizing:border-box}a{font-weight:500;color:inherit;text-decoration:none}a:hover{color:var(--accent-strong)}body{margin:0;min-width:320px;min-height:100vh;background:var(--bg)}#app{margin:0;padding:0}.app-shell{display:flex;flex-direction:column;min-height:100vh}.content-container{width:100%;max-width:1280px;margin:0 auto;padding:0 2.5rem}.site-header{position:fixed;top:0;left:0;z-index:20;width:100%;background:transparent;color:#fff;transition:background .3s ease,color .3s ease,box-shadow .3s ease,border-color .3s ease;border-bottom:1px solid transparent}.site-header.solid{background:#fffffff5;color:var(--text-primary);border-bottom-color:var(--border);box-shadow:var(--shadow-soft);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:2rem;padding:.35rem 0}.brand{display:flex;flex-direction:column;gap:.25rem}.brand-inline{display:flex;align-items:center}.brand-link{text-decoration:none;margin-right:1.5rem}.brand-link:hover{text-decoration:none}.brand-name{font-family:Orbitron,Noto Sans SC,Inter,system-ui,-apple-system,Segoe UI,sans-serif;font-size:2rem;font-weight:700;letter-spacing:.08em}.brand-tagline{font-size:.85rem;color:var(--text-muted)}.site-header .brand-tagline{color:#ffffffbf}.site-header.solid 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.4rem;border-radius:10px;color:var(--text-muted);font-size:.95rem;font-weight:500;cursor:pointer;white-space:nowrap}.nav-dropdown-link:hover{background:var(--surface-soft);color:var(--text-primary)}.site-main{display:flex;flex-direction:column;gap:3rem;flex:1}.site-main.with-header-offset{padding-top:58px}.site-footer{border-top:1px solid var(--border);background:#fafafa;font-size:.875rem}.footer-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;padding:3rem 2.5rem 2rem}.footer-col-title{margin:0 0 1rem;font-size:.95rem;font-weight:600;color:var(--text-primary)}.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.55rem}.footer-links a{color:var(--text-muted);text-decoration:none;transition:color .2s ease;font-weight:400}.footer-links a:hover{color:var(--text-primary)}.footer-contact{display:flex;flex-direction:column;gap:.55rem}.footer-contact p{margin:0;color:var(--text-muted);line-height:1.6}.contact-label{color:var(--text-primary);font-weight:500;flex-shrink:0}.footer-bottom{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:.75rem;padding:1.25rem 2.5rem;border-top:1px solid var(--border);color:var(--text-muted);font-size:.8rem}.site-footer a{color:inherit;text-decoration:none}.site-footer a:hover{text-decoration:underline}.page{display:flex;flex-direction:column;gap:1.5rem;width:100%;max-width:1280px;margin:0 auto;padding:0 2.5rem 3rem}.page.home{max-width:none;gap:12px;padding:0}.page.purchase{max-width:none;gap:0;padding:0}.page-header h1{font-size:clamp(2rem,3vw,2.6rem);margin:0 0 .75rem}.page-header p{margin:0;color:var(--text-muted)}.hero-carousel{position:relative;width:100%;height:100vh;overflow:hidden;background:#9b9b9b}.purchase-taobao-btn{position:absolute;left:10%;bottom:32%;z-index:4;display:inline-flex;align-items:center;justify-content:center;min-width:148px;padding:.72rem 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clamp(10px,1.6vw,18px);text-align:center;font-size:clamp(1.4rem,2.5vw,2rem);line-height:1.2;padding:0 clamp(16px,3vw,40px)}.core-tech-grid{width:75%;margin:0 auto;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(6px,1vw,14px);padding:0 clamp(8px,1.6vw,24px)}.core-tech-grid img{width:100%;aspect-ratio:2 / 3;object-fit:cover;display:block;background:#9b9b9b}.value-idea{width:100vw;margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);padding:clamp(20px,3vw,36px) 0 clamp(24px,3.5vw,40px)}.value-idea-title{margin:0 0 clamp(10px,1.6vw,18px);text-align:center;font-size:clamp(1.4rem,2.5vw,2rem);line-height:1.2;padding:0 clamp(16px,3vw,40px)}.value-idea-media{padding:0 clamp(16px,3vw,40px)}.value-idea-media img{width:100%;height:auto;display:block;background:#9b9b9b}.quick-nav{width:100vw;margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);padding:0 0 clamp(24px,3.5vw,40px)}.quick-nav-grid{width:75%;margin:0 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p{margin:0;color:var(--text-muted)}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem}.card{background:var(--surface);border-radius:18px;border:1px solid var(--border);padding:1.5rem;box-shadow:var(--shadow-soft);display:flex;flex-direction:column;gap:1rem}.card-media{min-height:120px;border-radius:14px;background:var(--surface-soft);border:1px dashed var(--border);display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:.9rem}.card-body h3{margin:0 0 .5rem;font-size:1.1rem}.card-body p{margin:0;color:var(--text-muted)}.meta{display:inline-flex;margin-top:.75rem;font-size:.85rem;color:var(--accent-strong);background:var(--accent-soft);padding:.2rem .7rem;border-radius:999px;width:fit-content}.form-placeholder{display:flex;flex-direction:column;gap:1.5rem;padding:2rem;border-radius:20px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-soft)}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem}.form-field{border-radius:12px;border:1px dashed var(--border);padding:.85rem 1rem;color:var(--text-muted);background:var(--surface-soft)}@media(max-width:960px){.content-container{padding:0 1.5rem}.page{padding:0 1.5rem 2.5rem}.site-header .header-inner{flex-direction:column;align-items:flex-start;padding:1rem 0}.site-nav{justify-content:flex-start}.site-main.with-header-offset{padding-top:140px}.footer-nav{grid-template-columns:repeat(2,1fr);gap:1.75rem;padding:2.5rem 1.5rem 1.75rem}}.mobile-nav{display:none}@media(max-width:768px){.hero-carousel:before,.hero-carousel:after{width:110px}.page.home{gap:8px}.product-showcase{padding:10px 8px 12px}.product-grid{gap:8px}.carousel-control{font-size:1.5rem}.carousel-control:before{inset:-14px}.video-carousel .carousel-control{width:46px;height:46px}.video-carousel .carousel-control.prev{left:1.5rem}.video-carousel .carousel-control.next{right:1.5rem}.mobile-nav{position:fixed;top:calc(10px + env(safe-area-inset-top,0px));left:12px;z-index:60;display:block}.mobile-nav-toggle{width:44px;height:44px;min-width:44px;border-radius:12px;border:1px solid rgba(255,255,255,.48);background:#18181880;color:#fff;display:flex;align-items:center;justify-content:center;padding:0;box-shadow:0 10px 26px #00000042;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.mobile-nav.open .mobile-nav-toggle{background:#181818b8}.mobile-nav-toggle svg{width:20px;height:20px}.mobile-nav-toggle path{fill:none;stroke:currentColor;stroke-linecap:round;stroke-width:2}.mobile-nav-backdrop{position:fixed;inset:0;z-index:58;background:#0003}.mobile-nav-dropdown{position:absolute;top:calc(100% + 8px);left:0;z-index:59;width:min(82vw,320px);max-height:min(70vh,560px);overflow-y:auto;border-radius:14px;border:1px solid var(--border);background:#fffffff5;box-shadow:0 20px 44px #0003;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);padding:.5rem}.mobile-nav-group{display:flex;flex-direction:column;gap:.25rem;padding:.5rem}.mobile-nav-group+.mobile-nav-group{border-top:1px solid var(--border)}.mobile-nav-group-title{margin:0;font-size:.82rem;font-weight:600;color:var(--text-muted)}.mobile-nav-link{display:block;border-radius:8px;padding:.5rem .6rem;color:var(--text-primary);font-size:.93rem;line-height:1.35;text-decoration:none}.mobile-nav-link:hover{background:var(--surface-soft)}.mobile-nav-link.active{background:var(--accent-soft);color:var(--accent-strong);font-weight:600}.site-header{display:none}.site-main.with-header-offset{padding-top:0}}@media(max-width:600px){.site-header .header-inner{gap:1rem}.lang-switch{width:100%}.cta-group{flex-direction:column}.video-carousel .carousel-control{width:40px;height:40px}.video-carousel .carousel-control.prev{left:calc((100% - var(--slide-width)) / 2)}.video-carousel .carousel-control.next{right:calc((100% - var(--slide-width)) / 2)}button{width:100%}.footer-nav{grid-template-columns:1fr;gap:1.5rem;padding:2rem 1.5rem 1.5rem}.footer-bottom{flex-direction:column;gap:.4rem;text-align:center}}.about{gap:clamp(20px,3vw,36px)}.about-intro{padding-top:clamp(12px,2.2vw,24px)}.about-intro .page-header{text-align:center}.about-intro-content{width:min(980px,100%);margin:0 auto;padding:0 clamp(16px,3vw,40px)}.about-intro-content p{margin:0;color:var(--text-primary);line-height:1.95;text-align:justify;text-indent:2em}.news-page{max-width:980px;padding-top:2rem}.page-btn{width:auto;padding:.45rem .85rem;border-radius:8px;border:1px solid var(--border);background:#fff;color:var(--text-primary);cursor:pointer}.page-btn:hover:not(:disabled){background:var(--surface-soft)}.page-btn:disabled{opacity:.5;cursor:not-allowed}.page-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}