/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#e2e8f0;line-height:1.8;background:#0a0e1a;overflow-x:hidden}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block}
button,input,textarea,select{font:inherit;border:none;outline:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
@media(max-width:640px){.container{padding:0 16px}}

/* === Color System === */
:root{
  --bg-primary:#0a0e1a;
  --bg-secondary:#0f172a;
  --bg-card:rgba(15,23,42,.6);
  --bg-card-hover:rgba(30,41,59,.8);
  --blue-400:#60a5fa;
  --blue-500:#3b82f6;
  --blue-600:#2563eb;
  --blue-700:#1d4ed8;
  --cyan:#06b6d4;
  --cyan-glow:rgba(6,182,212,.4);
  --blue-glow:rgba(59,130,246,.3);
  --white:#fff;
  --text-primary:#e2e8f0;
  --text-secondary:#94a3b8;
  --text-muted:#64748b;
  --border-subtle:rgba(255,255,255,.06);
  --border-card:rgba(255,255,255,.08);
  --glass:rgba(15,23,42,.7);
  --glass-border:rgba(59,130,246,.15);
}

/* === Scrollbar === */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg-primary)}
::-webkit-scrollbar-thumb{background:var(--blue-600);border-radius:3px}

/* === Particle/Grid Background === */
.bg-grid{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0}
.bg-grid::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(59,130,246,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(59,130,246,.03) 1px,transparent 1px);background-size:60px 60px;mask-image:radial-gradient(ellipse at 50% 50%,black 30%,transparent 70%)}
.bg-grid::after{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:800px;height:600px;background:radial-gradient(ellipse at center,rgba(6,182,212,.08),transparent 70%);pointer-events:none}

/* === Header === */
.header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(10,14,26,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-subtle);transition:all .4s}
.header.scrolled{background:rgba(10,14,26,.95);box-shadow:0 0 40px rgba(59,130,246,.1)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.header-logo{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:700;color:var(--white)}
.header-logo .logo-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--blue-500),var(--cyan));border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;color:var(--white);box-shadow:0 4px 20px rgba(59,130,246,.3)}
.header-nav{display:flex;align-items:center;gap:36px}
.header-nav a{font-size:14px;color:var(--text-secondary);position:relative;padding:6px 0;transition:color .3s;letter-spacing:.5px}
.header-nav a:hover,.header-nav a.active{color:var(--white)}
.header-nav a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--blue-500);border-radius:1px;transition:width .3s}
.header-nav a:hover::after,.header-nav a.active::after{width:100%}
.header-nav .header-btn::after{display:none !important}
.header-nav .header-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 24px;background:linear-gradient(135deg,var(--blue-600),var(--blue-500));color:var(--white)!important;border-radius:8px;font-size:13px;font-weight:600;transition:all .3s;cursor:pointer;letter-spacing:.5px;box-shadow:0 2px 15px rgba(59,130,246,.25)}
.header-nav .header-btn:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(59,130,246,.4);background:linear-gradient(135deg,var(--blue-500),var(--cyan))}
.menu-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px;z-index:1001}
.menu-toggle span{display:block;width:24px;height:2px;background:var(--white);border-radius:1px;transition:.3s}
.menu-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* === Footer === */
.footer{background:var(--bg-secondary);border-top:1px solid var(--border-subtle);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:50px;margin-bottom:40px}
.footer h4{color:var(--white);font-size:15px;margin-bottom:20px;font-weight:600}
.footer p,.footer a{font-size:13px;color:var(--text-muted);line-height:2.2;display:block;transition:color .3s}
.footer a:hover{color:var(--blue-400)}
.footer-bottom{border-top:1px solid var(--border-subtle);padding:24px 0;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--text-muted);flex-wrap:wrap;gap:10px}
.footer-bottom a{display:inline;color:var(--text-muted)}
.footer-bottom a:hover{color:var(--blue-400)}

/* === Hero Section === */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.35}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(170deg,rgba(10,14,26,.92) 0%,rgba(15,23,42,.7) 40%,rgba(10,14,26,.85) 100%);z-index:1}
.hero-glow{position:absolute;top:20%;right:10%;width:600px;height:600px;background:radial-gradient(circle,rgba(59,130,246,.15),transparent 70%);z-index:1;pointer-events:none}
.hero-glow:nth-child(2){top:auto;bottom:10%;left:5%;right:auto;background:radial-gradient(circle,rgba(6,182,212,.1),transparent 70%)}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:rgba(59,130,246,.1);border:1px solid rgba(59,130,246,.2);border-radius:50px;font-size:12px;color:var(--blue-400);margin-bottom:28px;letter-spacing:1px;font-weight:500}
.hero-badge .dot{width:6px;height:6px;background:var(--cyan);border-radius:50%;animation:pulse 2s infinite}
.hero h1{font-size:52px;font-weight:800;line-height:1.2;margin-bottom:24px;letter-spacing:-1px;color:var(--white)}
.hero h1 .gradient-text{background:linear-gradient(135deg,var(--blue-400),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:17px;color:var(--text-secondary);margin-bottom:20px;line-height:1.9;max-width:500px}
.hero-features{display:flex;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.hero-feature{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-muted);background:var(--bg-card);padding:8px 16px;border-radius:50px;border:1px solid var(--border-card)}
.hero-feature .feature-dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan-glow)}
.hero-buttons{display:flex;gap:14px;flex-wrap:wrap}
.btn{padding:14px 32px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .35s;display:inline-flex;align-items:center;gap:8px;letter-spacing:.5px}
.btn-primary{background:linear-gradient(135deg,var(--blue-600),var(--blue-500));color:var(--white);box-shadow:0 4px 20px rgba(59,130,246,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 8px 35px rgba(59,130,246,.5);background:linear-gradient(135deg,var(--blue-500),var(--cyan))}
.btn-outline{border:1px solid rgba(255,255,255,.2);color:var(--white);background:transparent}
.btn-outline:hover{border-color:var(--blue-400);background:rgba(59,130,246,.08);transform:translateY(-3px)}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center}
.hero-visual img{width:100%;max-width:420px;border-radius:20px}
.hero-visual .floating-badge{position:absolute;bottom:20px;right:0;background:var(--glass);backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:12px;padding:16px 20px;text-align:center}
.floating-badge .number{font-size:28px;font-weight:700;background:linear-gradient(135deg,var(--blue-400),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.floating-badge .label{font-size:11px;color:var(--text-muted);letter-spacing:1px}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.5)}}
@keyframes floatUp{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* === Section Common === */
.section{position:relative;padding:80px 0;z-index:1}
.section-alt{background:var(--bg-secondary)}
#features{padding-top:60px}
.section-header{text-align:center;margin-bottom:70px}
.section-label{display:inline-flex;align-items:center;gap:8px;padding:5px 16px;background:rgba(59,130,246,.08);color:var(--blue-400);border-radius:50px;font-size:12px;font-weight:600;letter-spacing:1.5px;margin-bottom:20px;text-transform:uppercase;border:1px solid rgba(59,130,246,.15)}
.section-label::before{content:'';width:6px;height:6px;background:var(--cyan);border-radius:50%}
.section-title{font-size:38px;font-weight:700;color:var(--white);margin-bottom:18px;line-height:1.3;letter-spacing:-.5px}
.section-subtitle{font-size:16px;color:var(--text-muted);max-width:600px;margin:0 auto;line-height:1.8}

/* === Features Grid === */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--bg-card);backdrop-filter:blur(10px);border:1px solid var(--border-card);border-radius:16px;padding:36px 28px;transition:all .4s;position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(59,130,246,.4),transparent);opacity:0;transition:opacity .4s}
.feature-card:hover{border-color:rgba(59,130,246,.3);transform:translateY(-6px);box-shadow:0 20px 60px rgba(0,0,0,.4),0 0 30px rgba(59,130,246,.05)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:52px;height:52px;background:rgba(59,130,246,.1);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:20px;border:1px solid rgba(59,130,246,.15)}
.feature-card h3{font-size:17px;font-weight:600;margin-bottom:10px;color:var(--white)}
.feature-card p{font-size:14px;color:var(--text-muted);line-height:1.8}

/* === How It Works === */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-card{text-align:center;padding:40px 24px;background:var(--bg-card);border:1px solid var(--border-card);border-radius:16px;position:relative;transition:all .4s}
.step-card:hover{border-color:rgba(59,130,246,.3);transform:translateY(-4px)}
.step-number{width:56px;height:56px;background:linear-gradient(135deg,var(--blue-600),var(--blue-500));color:var(--white);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;margin:0 auto 20px;box-shadow:0 8px 25px rgba(59,130,246,.3)}
.step-card h3{font-size:15px;font-weight:600;margin-bottom:8px;color:var(--white)}
.step-card p{font-size:13px;color:var(--text-muted);line-height:1.7}
.step-connector{position:absolute;top:28px;right:-20px;font-size:20px;color:var(--text-muted);opacity:.4;z-index:1}

/* === Solutions Cards === */
.solutions-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.solution-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:16px;overflow:hidden;transition:all .4s}
.solution-card:hover{transform:translateY(-8px);box-shadow:0 20px 60px rgba(0,0,0,.4);border-color:rgba(59,130,246,.25)}
.solution-img{height:220px;position:relative;overflow:hidden}
.solution-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.solution-card:hover .solution-img img{transform:scale(1.05)}
.solution-img::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(15,23,42,.9),transparent 60%)}
.solution-body{padding:28px;position:relative}
.solution-body h3{font-size:18px;font-weight:600;margin-bottom:10px;color:var(--white)}
.solution-body p{font-size:14px;color:var(--text-muted);line-height:1.8;margin-bottom:18px}
.solution-body .link{color:var(--blue-400);font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:all .3s}
.solution-body .link:hover{gap:12px;color:var(--cyan)}

/* === Stats === */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-card{text-align:center;padding:40px 20px;background:var(--bg-card);border:1px solid var(--border-card);border-radius:16px;transition:all .4s}
.stat-card:hover{border-color:rgba(59,130,246,.3);box-shadow:0 0 40px rgba(59,130,246,.05)}
.stat-number{font-size:44px;font-weight:800;margin-bottom:6px;background:linear-gradient(135deg,var(--blue-400),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{font-size:13px;color:var(--text-muted);font-weight:500}

/* === Case Cards === */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:16px;overflow:hidden;transition:all .4s}
.case-card:hover{transform:translateY(-6px);box-shadow:0 20px 60px rgba(0,0,0,.4);border-color:rgba(59,130,246,.25)}
.case-img{height:200px;overflow:hidden;position:relative}
.case-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.case-card:hover .case-img img{transform:scale(1.05)}
.case-img::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(15,23,42,.8),transparent 50%)}
.case-body{padding:24px}
.case-tag{display:inline-block;padding:4px 12px;background:rgba(59,130,246,.1);color:var(--blue-400);border-radius:20px;font-size:11px;font-weight:500;letter-spacing:.5px;margin-bottom:14px}
.case-body h3{font-size:16px;font-weight:600;margin-bottom:10px;color:var(--white)}
.case-body p{font-size:13px;color:var(--text-muted);line-height:1.7}

/* === Brand Bar Dark (below hero) === */
.brand-bar-light{background:var(--bg-secondary);border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle);overflow:hidden;position:relative;z-index:1}
.brand-bar-light::before,.brand-bar-light::after{content:'';position:absolute;top:0;bottom:0;width:120px;z-index:2;pointer-events:none}
.brand-bar-light::before{left:0;background:linear-gradient(to right,var(--bg-secondary),transparent)}
.brand-bar-light::after{right:0;background:linear-gradient(to left,var(--bg-secondary),transparent)}
.brand-bar-light-inner{padding:32px 0}
.brand-marquee{display:flex;overflow:hidden;white-space:nowrap;user-select:none}
.brand-marquee-content{display:flex;align-items:center;gap:80px;flex-shrink:0;animation:marquee 30s linear infinite;will-change:transform}
.brand-marquee:hover .brand-marquee-content{animation-play-state:paused}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-100%)}}
.brand-item{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:120px;height:50px;position:relative}
.brand-item img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;filter:brightness(0) invert(1) opacity(.5);transition:all .3s}
.brand-item:hover img{filter:brightness(0) invert(1) opacity(1);transform:scale(1.08)}
.brand-item .brand-text{display:inline-block;font-size:14px;font-weight:600;color:rgba(255,255,255,.5);white-space:nowrap;transition:all .3s}
.brand-item:hover .brand-text{color:rgba(255,255,255,1);transform:scale(1.08)}

/* === CTA Section === */
.cta{position:relative;padding:100px 0;text-align:center;overflow:hidden;z-index:1}
.cta-bg{position:absolute;inset:0;z-index:0}
.cta-bg img{width:100%;height:100%;object-fit:cover;opacity:.15}
.cta-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,14,26,.95),rgba(15,23,42,.9));z-index:1}
.cta .container{position:relative;z-index:2}
.cta h2{font-size:34px;font-weight:700;margin-bottom:14px;color:var(--white)}
.cta p{font-size:16px;color:var(--text-secondary);margin-bottom:36px}
.cta .btn{background:linear-gradient(135deg,var(--blue-600),var(--cyan));color:var(--white);font-weight:600;box-shadow:0 4px 25px rgba(59,130,246,.4);padding:16px 40px;font-size:15px}
.cta .btn:hover{transform:translateY(-3px);box-shadow:0 8px 40px rgba(59,130,246,.55)}

/* === Product Page === */
.product-hero{min-height:70vh;display:flex;align-items:center;position:relative;overflow:hidden}
.product-hero-bg{position:absolute;inset:0;z-index:0}
.product-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.2}
.product-hero-overlay{position:absolute;inset:0;background:linear-gradient(170deg,rgba(10,14,26,.95),rgba(15,23,42,.85));z-index:1}
.product-hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding:100px 24px 60px}
.product-hero-text h1{font-size:44px;font-weight:800;margin-bottom:20px;line-height:1.2;color:var(--white)}
.product-hero-text .sub{font-size:17px;color:var(--text-secondary);margin-bottom:28px;line-height:1.9}
.product-hero-text .tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.product-hero-text .tag{padding:8px 18px;background:rgba(59,130,246,.1);border:1px solid rgba(59,130,246,.15);border-radius:50px;font-size:12px;font-weight:500;color:var(--blue-400)}
.product-hero-visual{display:flex;justify-content:center}
.product-hero-visual img{max-width:380px;border-radius:20px}

.product-detail-section{padding:90px 0;position:relative;z-index:1}
.product-detail-section.bg-alt{background:var(--bg-secondary)}
.product-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center;grid-template-areas:"img text"}
.product-detail-grid.reversed{grid-template-areas:"text img"}
.product-detail-img{grid-area:img}
.product-detail-text{grid-area:text}
.product-detail-img{height:360px;border-radius:16px;overflow:hidden;position:relative;border:1px solid var(--border-card)}
.product-detail-img img{width:100%;height:100%;object-fit:cover}
.product-detail-text h2{font-size:30px;font-weight:700;margin-bottom:18px;color:var(--white)}
.product-detail-text p{font-size:15px;color:var(--text-muted);line-height:2;margin-bottom:24px}
.product-specs{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px}
.product-spec{padding:16px 18px;background:var(--bg-card);border-radius:12px;border:1px solid var(--border-card);display:flex;gap:12px;align-items:center}
.product-spec .spec-icon{font-size:22px;flex-shrink:0}
.product-spec h4{font-size:13px;font-weight:600;margin-bottom:2px;color:var(--white)}
.product-spec p{font-size:11px;color:var(--text-muted);margin:0;line-height:1.5}

/* === About Page === */
.about-hero{min-height:50vh;display:flex;align-items:center;position:relative;overflow:hidden}
.about-hero-bg{position:absolute;inset:0;z-index:0}
.about-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.2}
.about-hero-overlay{position:absolute;inset:0;background:linear-gradient(170deg,rgba(10,14,26,.95),rgba(15,23,42,.85));z-index:1}
.about-hero .container{position:relative;z-index:2;padding:120px 24px 60px}
.about-hero h1{font-size:44px;font-weight:800;margin-bottom:16px;color:var(--white)}
.about-hero p{font-size:17px;color:var(--text-secondary);max-width:600px;line-height:1.9}
.about-values{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.value-card{text-align:center;padding:40px 24px;border-radius:16px;background:var(--bg-card);border:1px solid var(--border-card);transition:all .4s}
.value-card:hover{transform:translateY(-6px);border-color:rgba(59,130,246,.3);box-shadow:0 0 30px rgba(59,130,246,.05)}
.value-icon{width:60px;height:60px;background:rgba(59,130,246,.1);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:26px;margin:0 auto 18px;border:1px solid rgba(59,130,246,.15)}
.value-card h3{font-size:15px;font-weight:600;margin-bottom:8px;color:var(--white)}

/* === Contact Page === */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px}
.contact-full{display:flex;justify-content:center}
.contact-full .contact-info{max-width:600px;text-align:center}
@media(max-width:768px){.contact-full .contact-info{text-align:left}}
.contact-info h2{font-size:30px;font-weight:700;margin-bottom:16px;color:var(--white)}
.contact-wechat{text-align:center;padding:40px;background:var(--bg-card);border-radius:16px;border:1px solid var(--border-card);backdrop-filter:blur(10px)}
.contact-wechat h3{font-size:24px;font-weight:700;margin-bottom:12px;color:var(--white)}
.contact-wechat p{font-size:14px;color:var(--text-muted);margin-bottom:24px}
.wechat-qr{width:180px;height:180px;margin:0 auto;border-radius:12px;overflow:hidden;border:2px solid var(--border-card);background:var(--white)}
.wechat-qr img{width:100%;height:100%;object-fit:cover}
.contact-info p{font-size:15px;color:var(--text-muted);line-height:1.9;margin-bottom:36px}
.contact-item{display:flex;gap:16px;margin-bottom:28px;align-items:flex-start}
.contact-icon{width:48px;height:48px;background:rgba(59,130,246,.1);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;border:1px solid rgba(59,130,246,.15)}
.contact-item h4{font-size:13px;font-weight:600;margin-bottom:4px;color:var(--white)}
.contact-item p{font-size:14px;color:var(--text-muted);margin:0}
.contact-form{background:var(--bg-card);padding:40px;border-radius:16px;border:1px solid var(--border-card);backdrop-filter:blur(10px)}
.contact-form h3{font-size:22px;font-weight:600;margin-bottom:28px;color:var(--white)}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:12px;font-weight:600;margin-bottom:6px;color:var(--text-secondary);letter-spacing:.5px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 16px;border:1px solid var(--border-card);border-radius:10px;font-size:14px;transition:all .3s;background:var(--bg-secondary);color:var(--white)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--blue-500);box-shadow:0 0 0 3px rgba(59,130,246,.1)}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-muted)}
.form-group select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px}
.form-group select option{background:var(--bg-secondary);color:var(--white)}
.form-group textarea{resize:vertical;min-height:130px}
.form-submit{width:100%;padding:14px;background:linear-gradient(135deg,var(--blue-600),var(--blue-500));color:var(--white);border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s;letter-spacing:.5px}
.form-submit:hover{background:linear-gradient(135deg,var(--blue-500),var(--cyan));box-shadow:0 4px 25px rgba(59,130,246,.4);transform:translateY(-2px)}

/* === Breadcrumb === */
.breadcrumb{background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle);padding:80px 24px 14px;font-size:13px;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--blue-400)}
.breadcrumb span{color:var(--white);font-weight:500}

/* === Page Banner === */
.page-banner{position:relative;padding:140px 0 80px;text-align:center;overflow:hidden}
.page-banner-bg{position:absolute;inset:0;z-index:0}
.page-banner-bg img{width:100%;height:100%;object-fit:cover;opacity:.15}
.page-banner-overlay{position:absolute;inset:0;background:linear-gradient(170deg,rgba(10,14,26,.95),rgba(15,23,42,.8));z-index:1}
.page-banner .container{position:relative;z-index:2}
.page-banner h1{font-size:44px;font-weight:800;margin-bottom:12px;color:var(--white)}
.page-banner p{font-size:16px;color:var(--text-secondary);max-width:500px;margin:0 auto}

/* === Team Images Section === */
.team-image{width:100%;height:260px;border-radius:16px;overflow:hidden;border:1px solid var(--border-card);position:relative}
.team-image img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.team-image:hover img{transform:scale(1.05)}

/* === Animate on Scroll === */
.animate{opacity:0;transform:translateY(40px);transition:all .8s cubic-bezier(.16,1,.3,1)}
.animate.visible{opacity:1;transform:translateY(0)}

/* === Back to Top === */
.back-to-top{position:fixed;bottom:32px;right:32px;width:44px;height:44px;background:linear-gradient(135deg,var(--blue-600),var(--blue-500));color:var(--white);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;cursor:pointer;opacity:0;visibility:hidden;transition:all .3s;box-shadow:0 4px 20px rgba(59,130,246,.4);z-index:999}
.back-to-top.visible{opacity:1;visibility:visible}
.back-to-top:hover{transform:translateY(-3px);box-shadow:0 8px 30px rgba(59,130,246,.5)}

/* === Glass Card Effect === */
.glass{background:var(--glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border)}

/* === Responsive === */
@media(max-width:968px){
  .header-nav{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:rgba(10,14,26,.98);backdrop-filter:blur(30px);flex-direction:column;padding:100px 30px 30px;gap:28px;box-shadow:-10px 0 50px rgba(0,0,0,.5);transition:right .4s;align-items:flex-start;border-left:1px solid var(--border-subtle)}
  .header-nav.open{right:0}
  .menu-toggle{display:flex}
  .hero .container,.product-hero .container{grid-template-columns:1fr;text-align:center}
  .hero-desc{margin:0 auto 20px}
  .hero-features{justify-content:center}
  .hero-buttons{justify-content:center}
  .hero h1{font-size:34px}
  .hero-visual{order:-1;margin-bottom:20px}
  .features-grid,.solutions-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step-connector{display:none}
  .stats{grid-template-columns:repeat(2,1fr)}
  .cases-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .product-detail-grid,.contact-grid{grid-template-columns:1fr;grid-template-areas:"img" "text"}
  .product-detail-grid.reversed{grid-template-areas:"img" "text"}
  .about-values{grid-template-columns:repeat(2,1fr)}
  .section-title{font-size:28px}
  .product-hero-text h1{font-size:34px}
}

@media(max-width:480px){
  .stats,.steps,.about-values{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section-title{font-size:24px}
  .hero h1{font-size:28px}
  .product-hero-text h1{font-size:28px}
  .page-banner h1,.about-hero h1{font-size:30px}
}

/* === Patent Gallery === */
.patent-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:40px}
.patent-item{background:var(--bg-card);border:1px solid var(--border-card);border-radius:16px;padding:16px;transition:all .3s}
.patent-item:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(59,130,246,.15);border-color:var(--blue-500)}
.patent-item img{width:100%;border-radius:8px}
@media(max-width:640px){
  .patent-gallery{grid-template-columns:1fr}
}

/* === Language Switch === */
.lang-switch{display:flex;align-items:center;gap:6px;margin-left:20px;padding:6px 12px;background:rgba(255,255,255,.05);border-radius:20px;border:1px solid rgba(255,255,255,.1)}
.lang-switch span{color:var(--text-muted);font-size:12px}
.lang-btn{background:none;border:none;color:var(--text-secondary);font-size:13px;font-weight:500;cursor:pointer;padding:4px 8px;border-radius:4px;transition:all .3s}
.lang-btn:hover{color:var(--white)}
.lang-btn.active{background:var(--blue-500);color:var(--white)}
@media(max-width:968px){
  .lang-switch{margin-left:0;margin-top:20px}
  .header-nav{padding-top:20px}
}

/* === Cases Tabs === */
.cases-tabs{display:flex;justify-content:center;gap:12px;margin-bottom:40px;flex-wrap:wrap}
.tab-btn{padding:10px 28px;background:rgba(59,130,246,.1);border:1px solid rgba(59,130,246,.2);border-radius:8px;color:var(--text-secondary);font-size:15px;font-weight:500;cursor:pointer;transition:all .3s}
.tab-btn:hover{background:rgba(59,130,246,.15);color:var(--white)}
.tab-btn.active{background:linear-gradient(135deg,var(--blue-500),var(--cyan));color:var(--white);border-color:transparent;box-shadow:0 4px 20px rgba(59,130,246,.3)}
@media(max-width:640px){
  .cases-tabs{gap:8px}
  .tab-btn{padding:8px 16px;font-size:14px}
}

/* === Case Title Sub === */
.case-title-sub{font-size:15px;color:var(--text-secondary);margin-top:8px;font-weight:400}