/* ============ Reset & Base ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Geist',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:#060b14;color:#c8d6e5;line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}

:root{
  --bg:#060b14;--bg-card:rgba(15,23,42,0.7);--bg-card-hover:rgba(20,30,55,0.85);
  --border:rgba(56,189,248,0.12);--border-hover:rgba(56,189,248,0.35);
  --accent:#38bdf8;--accent2:#2dd4bf;--accent3:#818cf8;
  --text:#c8d6e5;--text-dim:#7b8ca0;--text-bright:#e2e8f0;
  --gradient:linear-gradient(135deg,#38bdf8,#2dd4bf);
  --radius:12px;--radius-lg:20px;
  --shadow:0 4px 30px rgba(0,0,0,0.3);
  --max-width:1200px;
}

.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}

/* ============ Typography ============ */
.section-label{display:inline-block;font-size:13px;font-weight:600;letter-spacing:3px;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.section-title{font-size:clamp(28px,4vw,44px);font-weight:700;color:var(--text-bright);line-height:1.25;margin-bottom:16px}
.section-subtitle{font-size:16px;color:var(--text-dim);max-width:680px;line-height:1.7}

/* ============ Header / Nav ============ */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;padding:16px 0;transition:all 0.3s ease}
.navbar.scrolled{background:rgba(6,11,20,0.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:10px 0}
.navbar .container{display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:var(--text-bright)}
.logo-icon{width:38px;height:38px;background:var(--gradient);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;color:#060b14}
.logo-img{height:40px;width:auto;display:block}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{font-size:14px;font-weight:500;color:var(--text-dim);transition:color 0.2s;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--text-bright)}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--accent);transition:width 0.3s ease}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.mobile-menu-btn{display:none;background:none;border:none;color:var(--text);cursor:pointer;padding:8px}

/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:50px;font-size:15px;font-weight:600;cursor:pointer;transition:all 0.3s ease;border:none}
.btn-primary{background:var(--gradient);color:#060b14;box-shadow:0 4px 20px rgba(56,189,248,0.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(56,189,248,0.45)}
.btn-outline{background:transparent;border:1.5px solid var(--accent);color:var(--accent)}
.btn-outline:hover{background:rgba(56,189,248,0.1);transform:translateY(-2px)}

/* ============ Hero ============ */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-canvas{position:absolute;top:0;left:0;width:100%;height:100%;z-index:0}
.hero .container{position:relative;z-index:1;padding-top:80px;padding-bottom:80px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:rgba(56,189,248,0.1);border:1px solid rgba(56,189,248,0.2);border-radius:50px;font-size:13px;color:var(--accent);margin-bottom:28px}
.hero-badge-dot{width:7px;height:7px;background:var(--accent);border-radius:50%;animation:pulse 2s infinite}
.hero h1{font-size:clamp(36px,6vw,64px);font-weight:800;color:var(--text-bright);line-height:1.15;margin-bottom:24px}
.hero h1 .gradient-text{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:18px;color:var(--text-dim);max-width:640px;line-height:1.8;margin-bottom:36px}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}

/* ============ Particles Canvas ============ */
#particlesCanvas{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0;opacity:0.4}

/* ============ Shared Section ============ */
section{padding:100px 0;position:relative}
.section-header{text-align:center;margin-bottom:60px}

/* ============ About Cards ============ */
.about-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.about-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;backdrop-filter:blur(10px);transition:all 0.4s ease}
.about-card:hover{background:var(--bg-card-hover);border-color:var(--border-hover);transform:translateY(-6px)}
.about-card-icon{width:56px;height:56px;margin:0 auto 20px;background:rgba(56,189,248,0.1);border-radius:14px;display:flex;align-items:center;justify-content:center;color:var(--accent)}
.about-card h3{font-size:17px;font-weight:600;color:var(--text-bright);margin-bottom:10px}
.about-card p{font-size:14px;color:var(--text-dim);line-height:1.6}

/* ============ Products Grid ============ */
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.product-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 28px;backdrop-filter:blur(10px);transition:all 0.4s ease;position:relative;overflow:hidden;cursor:pointer;display:block}
.product-card:hover{background:var(--bg-card-hover);border-color:var(--border-hover);transform:translateY(-6px)}
.product-card::before{content:'';position:absolute;top:-80px;right:-80px;width:160px;height:160px;border-radius:50%;background:var(--gradient);opacity:0;filter:blur(60px);transition:opacity 0.4s}
.product-card:hover::before{opacity:0.08}
.product-card-icon{width:48px;height:48px;background:rgba(56,189,248,0.1);border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--accent);margin-bottom:20px}
.product-card h3{font-size:20px;font-weight:600;color:var(--text-bright);margin-bottom:10px}
.product-card p{font-size:14px;color:var(--text-dim);line-height:1.6;margin-bottom:16px}
.product-card-tag{display:inline-block;font-size:11px;color:var(--accent);background:rgba(56,189,248,0.1);padding:4px 12px;border-radius:50px;font-weight:500}
.product-card-arrow{position:absolute;bottom:28px;right:28px;color:var(--accent);opacity:0;transform:translateX(-8px);transition:all 0.3s}
.product-card:hover .product-card-arrow{opacity:1;transform:translateX(0)}

/* ============ Solutions ============ */
.solutions-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.solution-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 28px;backdrop-filter:blur(10px);transition:all 0.4s ease}
.solution-card:hover{background:var(--bg-card-hover);border-color:var(--border-hover);transform:translateY(-6px)}
.solution-card-icon{width:44px;height:44px;background:rgba(56,189,248,0.1);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--accent);margin-bottom:20px}
.solution-card h3{font-size:18px;font-weight:600;color:var(--text-bright);margin-bottom:10px}
.solution-card p{font-size:14px;color:var(--text-dim);line-height:1.6}

/* ============ Cases ============ */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;backdrop-filter:blur(10px);transition:all 0.4s ease}
.case-card:hover{background:var(--bg-card-hover);border-color:var(--border-hover);transform:translateY(-4px)}
.case-card-header{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.case-card-logo{width:44px;height:44px;background:rgba(56,189,248,0.1);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--accent);font-weight:700}
.case-logo{width:100%;height:52px;object-fit:contain;margin-bottom:16px;border-radius:8px;background:rgba(15,23,42,0.5);padding:8px 12px;border:1px solid var(--border)}
.case-card h4{font-size:15px;font-weight:600;color:var(--text-bright)}
.case-card p{font-size:13px;color:var(--text-dim);line-height:1.6}

/* ============ Contact ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-info-item{display:flex;gap:16px;margin-bottom:28px}
.contact-info-icon{width:44px;height:44px;min-width:44px;background:rgba(56,189,248,0.1);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--accent)}
.contact-info-item h4{font-size:14px;color:var(--text-dim);margin-bottom:4px}
.contact-info-item p{font-size:15px;color:var(--text-bright);font-weight:500}
.contact-form{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;backdrop-filter:blur(10px)}
.contact-form h3{font-size:20px;color:var(--text-bright);margin-bottom:20px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;color:var(--text-dim);margin-bottom:6px}
.form-group input,.form-group textarea{width:100%;padding:12px 16px;background:rgba(6,11,20,0.6);border:1px solid var(--border);border-radius:8px;color:var(--text);font-family:inherit;font-size:14px;transition:border-color 0.3s}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--accent)}
.form-group textarea{min-height:120px;resize:vertical}

/* WeChat QR code in contact */
.contact-wechat{margin-top:32px;padding:24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center}
.contact-wechat h4{font-size:15px;color:var(--text-bright);margin-bottom:12px;display:flex;align-items:center;justify-content:center;gap:8px}
.contact-wechat p{font-size:13px;color:var(--text-dim);margin-top:12px}
.qr-placeholder{width:160px;height:160px;margin:0 auto;border-radius:12px;background:repeating-linear-gradient(45deg,rgba(56,189,248,0.05),rgba(56,189,248,0.05) 10px,rgba(45,212,191,0.05) 10px,rgba(45,212,191,0.05) 20px);border:1px dashed var(--border);display:flex;align-items:center;justify-content:center;color:var(--text-dim);font-size:12px;text-align:center;padding:16px}
.wechat-qr-img{width:160px;height:160px;object-fit:contain;border-radius:12px;border:1px solid var(--border);background:#0f172a;padding:8px}

/* ============ Footer ============ */
.footer{background:rgba(6,11,20,0.9);border-top:1px solid var(--border);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-col h4{font-size:14px;color:var(--text-bright);margin-bottom:16px;font-weight:600}
.footer-col a,.footer-col p{display:block;font-size:13px;color:var(--text-dim);margin-bottom:10px;transition:color 0.2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--border);padding-top:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--text-dim)}
.icp-link{color:var(--text-dim);transition:color 0.2s;display:inline-flex;align-items:center;gap:6px}
.icp-link:hover{color:var(--accent)}
.icp-link::before{content:'®';font-size:11px;opacity:0.7}
.icp-placeholder{font-size:12px;color:var(--text-dim);opacity:0.7;margin-left:4px}

/* ============ PRODUCT DETAIL PAGES ============ */
.product-hero{position:relative;min-height:70vh;display:flex;align-items:center;overflow:hidden;padding-top:80px}
.product-hero-canvas{position:absolute;top:0;left:0;width:100%;height:100%;z-index:0}
.product-hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.product-hero-text h1{font-size:clamp(32px,5vw,52px);font-weight:800;color:var(--text-bright);line-height:1.15;margin-bottom:20px}
.product-hero-text h1 .gradient-text{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.product-hero-text .product-subtitle{font-size:16px;color:var(--accent);font-weight:500;margin-bottom:16px}
.product-hero-text p{font-size:17px;color:var(--text-dim);line-height:1.8;margin-bottom:32px}
.product-hero-image{position:relative}
.product-hero-image img{border-radius:var(--radius-lg);box-shadow:0 20px 60px rgba(0,0,0,0.4);border:1px solid var(--border)}
.product-hero-glow{position:absolute;top:-60px;right:-60px;width:300px;height:300px;border-radius:50%;background:var(--gradient);opacity:0.12;filter:blur(80px);z-index:-1}

/* Features Section */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 28px;backdrop-filter:blur(10px);transition:all 0.4s ease}
.feature-card:hover{background:var(--bg-card-hover);border-color:var(--border-hover);transform:translateY(-4px)}
.feature-card-icon{width:48px;height:48px;background:rgba(56,189,248,0.1);border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--accent);margin-bottom:16px}
.feature-card h3{font-size:17px;font-weight:600;color:var(--text-bright);margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-dim);line-height:1.6}

/* Image + Text section */
.img-text-section{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding:80px 0}
.img-text-section.reverse{direction:rtl}
.img-text-section.reverse>*{direction:ltr}
.img-text-image{position:relative}
.img-text-image img{border-radius:var(--radius-lg);box-shadow:0 10px 40px rgba(0,0,0,0.3);border:1px solid var(--border)}
.img-text-glow{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:200px;height:200px;border-radius:50%;background:var(--gradient);opacity:0.1;filter:blur(60px);z-index:-1}
.img-text-content h2{font-size:clamp(24px,3.5vw,36px);font-weight:700;color:var(--text-bright);margin-bottom:16px}
.img-text-content p{font-size:15px;color:var(--text-dim);line-height:1.8;margin-bottom:12px}

/* Stats bar */
.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:40px}
.stat-item{text-align:center;padding:24px}
.stat-number{font-size:36px;font-weight:800;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{font-size:13px;color:var(--text-dim);margin-top:6px}

/* Benefits list */
.benefits-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:24px}
.benefit-item{display:flex;align-items:flex-start;gap:12px;padding:16px;background:rgba(56,189,248,0.04);border-radius:var(--radius);border:1px solid var(--border)}
.benefit-check{width:22px;height:22px;min-width:22px;background:var(--gradient);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#060b14;font-size:12px;font-weight:700}
.benefit-item span{font-size:14px;color:var(--text-dim)}

/* CTA Section */
.cta-section{text-align:center;padding:80px 0;position:relative}
.cta-section::before{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:400px;height:400px;border-radius:50%;background:var(--gradient);opacity:0.06;filter:blur(100px)}
.cta-section .container{position:relative;z-index:1}
.cta-section h2{font-size:clamp(24px,3.5vw,36px);font-weight:700;color:var(--text-bright);margin-bottom:16px}
.cta-section p{font-size:16px;color:var(--text-dim);margin-bottom:32px}

/* Breadcrumb */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);margin-bottom:12px}
.breadcrumb a{color:var(--accent);transition:color 0.2s}
.breadcrumb a:hover{color:var(--text-bright)}
.breadcrumb .sep{color:var(--text-dim)}

/* Tech highlights */
.tech-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:24px}
.tech-item{display:flex;gap:14px;padding:20px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius)}
.tech-item-icon{width:40px;height:40px;min-width:40px;background:rgba(56,189,248,0.1);border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--accent)}
.tech-item h4{font-size:14px;color:var(--text-bright);margin-bottom:4px}
.tech-item p{font-size:13px;color:var(--text-dim)}

/* ============ Animations ============ */
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.4}}
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.reveal{opacity:0;transform:translateY(30px);transition:all 0.7s cubic-bezier(0.16,1,0.3,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:0.1s}
.reveal-delay-2{transition-delay:0.2s}
.reveal-delay-3{transition-delay:0.3s}
.reveal-delay-4{transition-delay:0.4s}

/* ============ Responsive ============ */
@media(max-width:1024px){
  .about-grid{grid-template-columns:repeat(2,1fr)}
  .products-grid{grid-template-columns:repeat(2,1fr)}
  .solutions-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .product-hero-grid,.img-text-section{grid-template-columns:1fr;gap:40px}
  .product-hero-image{order:-1}
  .img-text-section.reverse .img-text-image{order:-1}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .benefits-list{grid-template-columns:1fr}
  .tech-grid{grid-template-columns:1fr}
}

@media(max-width:768px){
  section{padding:60px 0}
  .hero{padding-top:100px}
  .hero-buttons{flex-direction:column}
  .nav-links{display:none;position:fixed;top:70px;left:0;right:0;background:rgba(6,11,20,0.96);backdrop-filter:blur(20px);flex-direction:column;padding:24px;border-bottom:1px solid var(--border)}
  .nav-links.open{display:flex}
  .mobile-menu-btn{display:block}
  .about-grid{grid-template-columns:1fr}
  .products-grid{grid-template-columns:1fr}
  .cases-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
  .features-grid{grid-template-columns:1fr}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .cta-section{padding:60px 0}
}