*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#000000;
  --bg-2:#0a0e1a;
  --bg-3:#101626;
  --bg-4:#1a2138;
  --primary:#1e90ff;
  --primary-2:#00d9ff;
  --primary-3:#0066cc;
  --primary-4:#003d80;
  --accent:#00d9ff;
  --accent-2:#00b8e6;
  --text:#e8eaf0;
  --text-dim:#8b95a8;
  --text-mute:#5a6478;
  --border:rgba(255,255,255,.08);
  --border-light:rgba(255,255,255,.15);
  --glow:0 0 30px rgba(30,144,255,.4);
  --glow-strong:0 0 60px rgba(30,144,255,.6);
  --max-w:1280px;
  --t:.3s cubic-bezier(.4,0,.2,1);
}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans TC',sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden;line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--t)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* === Container === */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}

/* === Navbar === */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:16px 0;background:rgba(0,0,0,.85);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);transition:all var(--t)}
.nav.scrolled{background:rgba(0,0,0,.95);box-shadow:0 4px 30px rgba(30,144,255,.15)}
.nav-inner{max-width:var(--max-w);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:14px;text-decoration:none}
.brand-logo{width:56px;height:56px;border-radius:8px;overflow:hidden;box-shadow:0 0 16px rgba(30,144,255,.3)}
.brand-logo img{width:100%;height:100%;object-fit:cover;display:block}
.brand-logo::before{display:none}
@keyframes shine{0%,100%{transform:translateX(-100%)}50%{transform:translateX(100%)}}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-family:'Orbitron',sans-serif;font-size:18px;font-weight:900;letter-spacing:2px;color:var(--text);text-transform:uppercase}
.brand-name span{color:var(--primary-2)}
.brand-sub{font-size:11px;color:var(--text-dim);letter-spacing:1px;margin-top:2px}
.nav-links{display:flex;gap:4px;align-items:center}
.nav-link{padding:9px 18px;font-size:14px;font-weight:500;color:rgba(255,255,255,.85);border-radius:6px;transition:all var(--t);position:relative}
.nav-link:hover{color:var(--primary-2);background:rgba(30,144,255,.08)}
.nav-link::after{content:'';position:absolute;bottom:0;left:50%;width:0;height:2px;background:var(--primary-2);transition:all var(--t);transform:translateX(-50%)}
.nav-link:hover::after{width:60%}
.nav-cta{padding:11px 28px;background:transparent;color:var(--primary-2);font-weight:700;font-size:14px;border-radius:6px;transition:all var(--t);margin-left:12px;position:relative;border:1.5px solid var(--primary-2)}
.nav-cta:hover{background:var(--primary-2);color:#000;box-shadow:0 0 30px rgba(0,217,255,.5);transform:translateY(-1px)}
.nav-toggle{display:none;width:32px;height:32px;align-items:center;justify-content:center;font-size:24px;background:none;border:none;color:inherit}

/* === Hero === */
.hero{min-height:100vh;position:relative;overflow:hidden;display:flex;align-items:center;background:linear-gradient(135deg,#000 0%,#0a0e1a 50%,#001533 100%)}
.hero::before{content:'';position:absolute;inset:0;z-index:0;background:radial-gradient(ellipse 40% 60% at 70% 50%,rgba(0,217,255,.25) 0%,transparent 60%),radial-gradient(ellipse 30% 40% at 20% 80%,rgba(30,144,255,.15) 0%,transparent 60%)}
.hero::after{content:'';position:absolute;inset:0;z-index:0;background-image:linear-gradient(rgba(0,217,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(0,217,255,.03) 1px,transparent 1px);background-size:50px 50px;opacity:.5}
.hero-bg-image{position:absolute;inset:0;z-index:0;background:url('web_images/led_particles.jpg') center/cover;opacity:.35;mix-blend-mode:screen}
.hero-inner{max-width:var(--max-w);margin:0 auto;padding:140px 24px 80px;position:relative;z-index:1;display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center;width:100%}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;background:rgba(30,144,255,.1);border:1px solid rgba(30,144,255,.3);border-radius:30px;font-size:13px;color:var(--primary-2);margin-bottom:24px;font-weight:600;letter-spacing:1px}
.hero-eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--primary-2);box-shadow:0 0 10px var(--primary-2);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.hero h1{font-family:'Orbitron',sans-serif;font-size:clamp(40px,6vw,72px);font-weight:900;line-height:1.15;color:var(--text);margin-bottom:20px;letter-spacing:2px}
.hero h1 .highlight{display:inline-block;background:linear-gradient(135deg,var(--primary-2),var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;position:relative}
.hero h1 .highlight::after{content:'';position:absolute;left:0;right:0;bottom:-4px;height:3px;background:linear-gradient(90deg,var(--primary-2),transparent)}
.hero-sub{font-size:18px;color:var(--text-dim);margin-bottom:32px;line-height:1.8;max-width:520px}
.hero-sub strong{color:var(--primary-2);font-weight:700}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn{padding:14px 32px;border-radius:6px;font-weight:700;font-size:15px;transition:all var(--t);display:inline-flex;align-items:center;gap:8px;text-align:center;border:none;cursor:pointer;letter-spacing:1px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-3));color:#fff;box-shadow:0 4px 20px rgba(30,144,255,.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(30,144,255,.6)}
.btn-secondary{background:transparent;color:var(--primary-2);border:1.5px solid var(--primary-2)}
.btn-secondary:hover{background:var(--primary-2);color:#000;box-shadow:0 0 30px rgba(0,217,255,.5)}

/* Hero Sidebar */
.hero-sidebar{background:rgba(10,14,26,.7);backdrop-filter:blur(10px);border:1px solid var(--border);border-radius:12px;padding:24px;position:relative}
.hero-sidebar::before{content:'';position:absolute;top:-1px;left:-1px;right:-1px;bottom:-1px;border-radius:12px;padding:1px;background:linear-gradient(135deg,var(--primary),transparent,var(--primary));-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.5}
.sidebar-title{font-family:'Orbitron',sans-serif;font-size:13px;font-weight:700;color:var(--primary-2);letter-spacing:2px;margin-bottom:20px;display:flex;align-items:center;gap:8px}
.sidebar-title::before{content:'';width:4px;height:16px;background:var(--primary-2);border-radius:2px}
.sidebar-item{display:flex;align-items:center;gap:16px;padding:16px 12px;border-radius:8px;transition:all var(--t);cursor:pointer;border:1px solid transparent;margin-bottom:8px}
.sidebar-item:hover{background:rgba(30,144,255,.05);border-color:rgba(30,144,255,.2);transform:translateX(4px)}
.sidebar-icon{width:44px;height:44px;border-radius:8px;background:linear-gradient(135deg,rgba(30,144,255,.2),rgba(0,217,255,.1));border:1px solid rgba(30,144,255,.3);flex-shrink:0}
.sidebar-icon svg{width:22px;height:22px;stroke:var(--primary-2);stroke-width:2;fill:none}
.sidebar-text{flex:1;min-width:0}
.sidebar-name{font-size:14px;font-weight:700;color:var(--text);margin-bottom:2px}
.sidebar-desc{font-size:11px;color:var(--text-dim)}
.sidebar-arrow{color:var(--primary-2);font-size:14px;opacity:.5;transition:all var(--t)}
.sidebar-item:hover .sidebar-arrow{opacity:1;transform:translateX(4px)}

/* === Section === */
.section{padding:100px 24px;position:relative}
.section-inner{max-width:var(--max-w);margin:0 auto}
.section-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;background:rgba(30,144,255,.08);border:1px solid rgba(30,144,255,.2);border-radius:20px;font-size:12px;color:var(--primary-2);margin-bottom:16px;font-weight:600;letter-spacing:1.5px}
.section-eyebrow::before{content:'';width:20px;height:1px;background:var(--primary-2)}
.section-title{font-family:'Orbitron',sans-serif;font-size:clamp(32px,4.5vw,48px);font-weight:900;color:var(--text);margin-bottom:12px;line-height:1.2;letter-spacing:1px}
.section-title .highlight{background:linear-gradient(135deg,var(--primary-2),var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-sub{font-size:17px;color:var(--text-dim);max-width:680px;margin-bottom:60px;line-height:1.7}

/* === Features === */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.feature-card{background:linear-gradient(135deg,var(--bg-2),var(--bg-3));border:1px solid var(--border);border-radius:8px;padding:32px;position:relative;transition:all var(--t);overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:0;transition:opacity var(--t)}
.feature-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:0 12px 40px rgba(30,144,255,.2)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:8px;background:linear-gradient(135deg,rgba(30,144,255,.15),rgba(0,217,255,.05));border:1px solid rgba(30,144,255,.3);margin-bottom:20px;position:relative}
.feature-icon svg{width:28px;height:28px;stroke:var(--primary-2);stroke-width:1.8;fill:none}
.feature-icon::after{content:'';position:absolute;inset:0;border-radius:8px;box-shadow:0 0 20px rgba(30,144,255,.4);opacity:0;transition:opacity var(--t)}
.feature-card:hover .feature-icon::after{opacity:1}
.feature-card h3{font-size:18px;font-weight:800;color:var(--text);margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--text-dim);line-height:1.7}

/* === Services === */
.services{background:var(--bg-2);position:relative}
.services::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 50% 40% at 50% 0%,rgba(30,144,255,.08) 0%,transparent 60%)}
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;position:relative}
.service-card{background:var(--bg-3);border:1px solid var(--border);border-radius:8px;overflow:hidden;transition:all var(--t);position:relative;cursor:pointer;display:flex;flex-direction:column}
.service-card:hover{transform:translateY(-8px);border-color:var(--primary);box-shadow:0 20px 60px rgba(30,144,255,.25)}
.service-img{height:240px;background-size:cover;background-position:center;position:relative;overflow:hidden}
.service-img::before{content:'';position:absolute;inset:0;background:linear-gradient(to bottom,transparent 40%,var(--bg-3));z-index:1}
.service-img::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(30,144,255,.1),transparent 60%);z-index:1}
.service-tag{position:absolute;top:16px;left:16px;padding:6px 12px;background:rgba(30,144,255,.15);backdrop-filter:blur(10px);border:1px solid rgba(30,144,255,.3);border-radius:6px;font-size:11px;font-weight:700;color:var(--primary-2);letter-spacing:1px;z-index:2}
.service-body{padding:24px;flex:1;display:flex;flex-direction:column}
.service-body h3{font-family:'Orbitron',sans-serif;font-size:20px;font-weight:800;color:var(--text);margin-bottom:8px;letter-spacing:1px}
.service-body p{font-size:14px;color:var(--text-dim);margin-bottom:20px;line-height:1.7;flex:1}
.service-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary-2);font-weight:700;font-size:14px;letter-spacing:1px;transition:all var(--t);align-self:flex-start}
.service-link:hover{gap:10px;color:var(--primary)}

/* === Cases === */
.cases-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.case-card{position:relative;border-radius:8px;overflow:hidden;background:var(--bg-3);border:1px solid var(--border);transition:all var(--t);cursor:pointer}
.case-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:0 20px 60px rgba(30,144,255,.2)}
.case-img{aspect-ratio:4/3;background-size:cover;background-position:center;position:relative;overflow:hidden}
.case-img::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.9) 0%,transparent 50%);transition:opacity var(--t)}
.case-overlay{position:absolute;bottom:0;left:0;right:0;padding:24px;color:#fff;z-index:2;transform:translateY(20px);opacity:0;transition:all var(--t)}
.case-card:hover .case-overlay{transform:translateY(0);opacity:1}
.case-tag{display:inline-block;padding:4px 10px;background:rgba(30,144,255,.2);border:1px solid rgba(30,144,255,.4);border-radius:4px;font-size:11px;font-weight:700;color:var(--primary-2);letter-spacing:1px;margin-bottom:8px}
.case-title{font-family:'Orbitron',sans-serif;font-size:18px;font-weight:800;margin-bottom:6px;letter-spacing:1px}
.case-meta{font-size:12px;color:rgba(255,255,255,.7);display:flex;gap:12px;align-items:center}
.case-info{padding:20px}
.case-desc{font-size:14px;color:var(--text-dim);line-height:1.6}

/* === Stats === */
.stats{background:linear-gradient(135deg,#000 0%,#001533 50%,#000 100%);position:relative;overflow:hidden}
.stats::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 40% 80% at 50% 50%,rgba(30,144,255,.2) 0%,transparent 70%);pointer-events:none}
.stats::after{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(0,217,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(0,217,255,.04) 1px,transparent 1px);background-size:60px 60px;opacity:.6;pointer-events:none}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px;position:relative;z-index:1}
.stat-item{text-align:center;padding:24px;position:relative}
.stat-item::before{content:'';position:absolute;top:0;left:50%;width:60px;height:2px;background:linear-gradient(90deg,transparent,var(--primary),transparent);transform:translateX(-50%)}
.stat-num{font-family:'Orbitron',sans-serif;font-size:56px;font-weight:900;background:linear-gradient(135deg,var(--primary-2),var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:8px;letter-spacing:1px}
.stat-label{font-size:14px;color:var(--text-dim);letter-spacing:2px;font-weight:600}

/* === CTA === */
.cta-section{background:var(--bg);position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 50% 60% at 50% 50%,rgba(30,144,255,.15) 0%,transparent 60%)}
.cta-box{background:linear-gradient(135deg,var(--bg-2),var(--bg-3));border:1px solid var(--border);border-radius:16px;padding:60px 48px;text-align:center;position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:conic-gradient(from 0deg,transparent,rgba(30,144,255,.1),transparent 30%);animation:rotate 8s linear infinite}
@keyframes rotate{to{transform:rotate(360deg)}}
.cta-box>*{position:relative;z-index:1}
.cta-box h2{font-family:'Orbitron',sans-serif;font-size:clamp(28px,4vw,40px);font-weight:900;color:var(--text);margin-bottom:16px;line-height:1.2;letter-spacing:1px}
.cta-box h2 .highlight{background:linear-gradient(135deg,var(--primary-2),var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.cta-box p{font-size:17px;color:var(--text-dim);margin-bottom:32px;max-width:580px;margin-left:auto;margin-right:auto}

/* === Footer === */
.footer{background:linear-gradient(180deg,var(--bg-2) 0%,#000 100%);border-top:1px solid var(--border);padding:80px 24px 30px;position:relative}
.footer::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent)}
.footer-grid{max-width:var(--max-w);margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:48px;margin-bottom:60px}
.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.footer-desc{font-size:14px;color:var(--text-dim);line-height:1.8;margin-bottom:24px}
.footer-contact-item{display:flex;align-items:flex-start;gap:10px;padding:6px 0;font-size:14px;color:var(--text-dim)}
.footer-contact-item svg{width:18px;height:18px;stroke:var(--primary-2);stroke-width:2;fill:none;flex-shrink:0;margin-top:2px}
.footer-col h4{font-family:'Orbitron',sans-serif;font-size:14px;color:var(--text);margin-bottom:20px;letter-spacing:2px;font-weight:700}
.footer-col a{display:flex;align-items:center;gap:8px;color:var(--text-dim);padding:8px 0;font-size:14px;transition:all var(--t)}
.footer-col a:hover{color:var(--primary-2);transform:translateX(4px)}
.footer-col a::before{content:'';width:0;height:1px;background:var(--primary-2);transition:width var(--t)}
.footer-col a:hover::before{width:12px}
.footer-bottom{max-width:var(--max-w);margin:0 auto;padding-top:24px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.footer-bottom-links{display:flex;gap:24px}
.footer-bottom-links a{color:var(--text-dim);font-size:13px}
.footer-bottom-links a:hover{color:var(--primary-2)}
.footer-copyright{font-size:13px;color:var(--text-mute)}

/* === Animations === */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity .8s ease,transform .8s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* === Responsive === */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-sidebar{max-width:480px;margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:rgba(0,0,0,.95);padding:20px;box-shadow:0 4px 30px rgba(30,144,255,.15);gap:4px;border-top:1px solid var(--border)}
  .nav-links.open{display:flex}
  .nav-toggle{display:flex;color:var(--primary-2)}
  .hero-inner{grid-template-columns:1fr;padding:120px 20px 60px}
  .section{padding:60px 20px}
  .cta-box{padding:40px 24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .stat-num{font-size:42px}
}