/* ===== Tokens ===== */
:root {
  --navy-900: #0c1a2e;
  --navy-800: #122640;
  --blue-600: #0057b8;
  --blue-500: #0066cc;
  --blue-400: #3b8ede;
  --accent: #e85d04;
  --accent-hover: #d14d00;
  --white: #fff;
  --gray-50: #f7f9fc;
  --gray-100: #eef2f7;
  --gray-200: #dde4ed;
  --text-dark: #1a2332;
  --text-body: #4a5568;
  --text-muted: #6b7a90;
  --shadow-sm: 0 2px 8px rgba(12,26,46,.06);
  --shadow-md: 0 8px 28px rgba(12,26,46,.08);
  --shadow-lg: 0 16px 48px rgba(12,26,46,.12);
  --radius: 12px;
  --radius-lg: 16px;
  --header-h: 72px;
  --ease: cubic-bezier(.4,0,.2,1);
  --font: 'Inter', 'Noto Sans SC', -apple-system, sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
body{font-family:var(--font);background:var(--gray-50);color:var(--text-dark);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea{font-family:inherit}
.container{width:min(1200px,92vw);margin:0 auto}
.container-wide{width:min(1680px,96vw);margin:0 auto}

/* Header */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-h);background:transparent;transition:all .35s var(--ease)}
.header.scrolled{background:rgba(255,255,255,.95);backdrop-filter:blur(16px);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{width:42px;height:42px;background:linear-gradient(135deg,var(--blue-600),var(--blue-400));color:#fff;font-weight:700;font-size:.75rem;border-radius:10px;display:flex;align-items:center;justify-content:center}
.logo-img{width:42px;height:42px;border-radius:10px;object-fit:cover;border:2px solid rgba(255,255,255,.2)}
.header.scrolled .logo-img{border-color:var(--gray-200)}
.logo-text{font-weight:700;font-size:1rem;line-height:1.2;color:var(--navy-800)}
.logo-text span{font-size:.62rem;font-weight:500;color:var(--text-muted);display:block}
.header:not(.scrolled) .logo-text{color:#fff}
.header:not(.scrolled) .logo-text span{color:rgba(255,255,255,.65)}
.header:not(.scrolled) .logo-mark{background:rgba(255,255,255,.15);backdrop-filter:blur(8px)}

.nav{display:flex;gap:28px}
.nav a{font-size:.875rem;font-weight:500;color:var(--text-body);position:relative;transition:color .25s}
.header:not(.scrolled) .nav a{color:rgba(255,255,255,.88)}
.nav a::after{content:'';position:absolute;bottom:-4px;left:50%;width:0;height:2px;background:var(--blue-500);transition:all .3s;transform:translateX(-50%)}
.nav a:hover::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px}
.header-phone{font-size:.82rem;font-weight:600;color:var(--blue-600)}
.header:not(.scrolled) .header-phone{color:rgba(255,255,255,.9)}
.lang-toggle{padding:6px 12px;border:1px solid var(--gray-200);border-radius:6px;font-size:.78rem;font-weight:600;color:var(--blue-600);background:#fff;transition:all .25s}
.header:not(.scrolled) .lang-toggle{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.25);color:#fff}
.lang-toggle:hover{background:var(--blue-600);color:#fff;border-color:var(--blue-600)}
.menu-toggle{display:none;flex-direction:column;gap:5px;padding:6px}
.menu-toggle span{display:block;width:22px;height:2px;background:var(--navy-800);transition:all .3s}
.header:not(.scrolled) .menu-toggle span{background:#fff}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 24px;border-radius:8px;font-size:.9rem;font-weight:600;transition:all .3s var(--ease);border:none;white-space:nowrap}
.btn-sm{padding:8px 18px;font-size:.82rem}
.btn-lg{padding:14px 32px;font-size:1rem}
.btn-block{width:100%}
.btn-primary{background:linear-gradient(135deg,var(--blue-600),var(--blue-500));color:#fff;box-shadow:0 4px 16px rgba(0,87,184,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,87,184,.35)}
.btn-ghost{border:1px solid rgba(255,255,255,.35);color:#fff;background:rgba(255,255,255,.08);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:rgba(255,255,255,.15)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 16px rgba(232,93,4,.35)}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--text-dark);box-shadow:var(--shadow-md)}
.btn-white:hover{transform:translateY(-2px)}

/* Sections */
.section{padding:96px 0;position:relative;z-index:1}
.section-light{background:#fff}
.section-header{margin-bottom:48px}
.section-header.center{text-align:center}
.section-tag{display:inline-block;padding:5px 14px;background:rgba(0,87,184,.08);color:var(--blue-600);border-radius:20px;font-size:.72rem;font-weight:600;letter-spacing:.06em;margin-bottom:14px;text-transform:uppercase}
.section-title{font-size:clamp(1.75rem,3.5vw,2.25rem);font-weight:700;color:var(--navy-800);line-height:1.3;margin-bottom:12px}
.section-desc{color:var(--text-muted);max-width:560px;font-size:.95rem;line-height:1.7}
.section-header.center .section-desc{margin:0 auto}

/* Hero Carousel */
.hero-carousel{position:relative;height:100vh;min-height:100vh;min-height:100dvh;background:var(--navy-900);overflow:hidden}
.carousel{position:absolute;inset:0}
.carousel-track{position:relative;width:100%;height:100%}
.carousel-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .8s,visibility .8s}
.carousel-slide.active{opacity:1;visibility:visible;z-index:1}
.slide-bg{position:absolute;inset:0;width:100%;height:100%;background-size:cover;background-position:center center;transform:scale(1.08);transition:transform 7s ease}
.slide-bg--product{background-position:center 42%;transform:scale(1.12)}
.carousel-slide.active .slide-bg--product{transform:scale(1.04)}
.carousel-slide.active .slide-bg{transform:scale(1)}
.slide-overlay{position:absolute;inset:0;background:linear-gradient(105deg,rgba(12,26,46,.9) 0%,rgba(12,26,46,.45) 55%,rgba(12,26,46,.15) 100%)}
.slide-inner{position:relative;height:100%;display:flex;flex-direction:column;justify-content:center;padding:calc(var(--header-h) + 24px) 0 88px;max-width:780px}
.slide-badge{display:inline-block;padding:6px 14px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);border-radius:20px;font-size:.78rem;color:rgba(255,255,255,.9);margin-bottom:20px}
.slide-title{font-size:clamp(2rem,5vw,3rem);font-weight:700;color:#fff;line-height:1.2;margin-bottom:18px}
.text-gradient{background:linear-gradient(135deg,#6db3ff,#4a9eff,#a8d4ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.slide-desc{font-size:1rem;color:rgba(255,255,255,.75);line-height:1.8;margin-bottom:28px;max-width:540px}
.slide-desc:empty{display:none;margin:0}
.slide-actions{display:flex;gap:14px;flex-wrap:wrap}
.carousel-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:12;width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#fff;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(8px);opacity:0;transition:all .3s}
.carousel:hover .carousel-arrow{opacity:1}
.carousel-prev{left:24px}
.carousel-next{right:24px}
.carousel-dots{position:absolute;bottom:36px;left:50%;transform:translateX(-50%);z-index:12;display:flex;gap:10px}
.carousel-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.35);padding:0;cursor:pointer;transition:all .35s}
.carousel-dot.active{width:28px;border-radius:5px;background:#fff}
.carousel-progress{position:absolute;bottom:0;left:0;right:0;height:3px;background:rgba(255,255,255,.1);z-index:12}
.carousel-progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--blue-400),#fff);transition:width .1s linear}
.hero-scroll-hint{position:absolute;bottom:72px;left:50%;transform:translateX(-50%);z-index:12;display:flex;flex-direction:column;align-items:center;gap:8px;color:rgba(255,255,255,.4);font-size:.72rem;pointer-events:none}
.scroll-indicator{width:1px;height:32px;background:linear-gradient(to bottom,rgba(255,255,255,.6),transparent);animation:scrollPulse 2s ease-in-out infinite}
@keyframes scrollPulse{0%,100%{opacity:.4;transform:scaleY(.7)}50%{opacity:1;transform:scaleY(1)}}

/* Stats */
.stats-section{background:#fff;border-bottom:1px solid var(--gray-200);box-shadow:var(--shadow-sm)}
.stats-bar-inner{display:flex;align-items:center;justify-content:center;padding:32px 0}
.stats-bar-item{flex:1;text-align:center;padding:8px 20px}
.stat-num-box{height:2.5rem;display:flex;align-items:center;justify-content:center;margin-bottom:6px}
.stat-num{font-size:2rem;font-weight:700;color:var(--blue-600);font-variant-numeric:tabular-nums;transition:transform .12s,opacity .12s}
.stat-num.rolling{transform:translateY(-4px);opacity:.85}
.stat-num.plus::after{content:'+';font-size:1.1rem;opacity:.75}
.stat-label{font-size:.82rem;color:var(--text-muted);font-weight:500}
.stats-bar-divider{width:1px;height:48px;background:var(--gray-200)}

/* Features */
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:#fff;padding:32px 24px;border-radius:var(--radius-lg);border:1px solid var(--gray-200);text-align:center;transition:all .35s var(--ease)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-icon-wrap{width:52px;height:52px;margin:0 auto 18px;display:flex;align-items:center;justify-content:center;background:rgba(0,87,184,.08);border-radius:12px;color:var(--blue-600)}
.feature-icon-wrap svg{width:26px;height:26px}
.feature-card h3{font-size:1rem;margin-bottom:8px;color:var(--navy-800)}
.feature-card p{font-size:.85rem;color:var(--text-muted);line-height:1.65}

/* About */
.about-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:center}
.about-visual{display:flex;flex-direction:column;gap:20px}
.about-image-wrap{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.about-image-wrap .zoom-wrap{width:100%;height:420px}
.about-image-wrap img{width:100%;height:100%;object-fit:cover;display:block}
.about-card{background:linear-gradient(145deg,var(--navy-800),var(--blue-600));border-radius:var(--radius-lg);padding:28px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;color:#fff}
.about-stat strong{display:block;font-size:2.5rem;font-weight:700}
.about-stat span{font-size:.85rem;opacity:.75}
.about-text p{color:var(--text-muted);margin-bottom:14px;line-height:1.8}
.about-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.about-chips span{padding:6px 14px;background:rgba(0,87,184,.08);border:1px solid var(--gray-200);border-radius:6px;font-size:.78rem;color:var(--blue-600);font-weight:500}

/* Products */
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.product-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);overflow:hidden;transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .45s}
.product-card:hover{transform:translateY(-8px) scale(1.01);box-shadow:var(--shadow-lg);border-color:transparent}
.product-media{height:380px;overflow:hidden;background:var(--gray-100)}
.product-media .zoom-wrap{width:100%;height:100%}
.product-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:56px}
.gallery-item{width:100%;height:360px;border-radius:var(--radius-lg);border:1px solid var(--gray-200)}
.product-body{padding:28px}
.product-body h3{font-size:1.05rem;margin-bottom:8px;color:var(--navy-800)}
.product-body p{font-size:.85rem;color:var(--text-muted);line-height:1.65;margin-bottom:12px}
.product-tags{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.product-tags li{padding:4px 10px;background:var(--gray-50);border:1px solid var(--gray-200);border-radius:4px;font-size:.7rem;color:var(--blue-600);font-weight:500}

/* Process */
.process-section{background:var(--navy-900);color:#fff}
.process-section .section-title{color:#fff}
.process-section .section-tag{background:rgba(255,255,255,.1);color:var(--blue-400)}
.process-flow{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;margin-bottom:40px}
.process-step{text-align:center;padding:16px 12px;min-width:90px}
.process-step span{display:block;width:40px;height:40px;line-height:40px;margin:0 auto 8px;border-radius:50%;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);font-size:.82rem;font-weight:700;color:var(--blue-400)}
.process-step h4{font-size:.82rem;font-weight:500;color:rgba(255,255,255,.85)}
.process-arrow{color:rgba(255,255,255,.3);font-size:.9rem}
.capability-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cap-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:20px;text-align:center}
.cap-item strong{display:block;font-size:1.1rem;margin-bottom:4px;color:var(--blue-400)}
.cap-item span{font-size:.78rem;color:rgba(255,255,255,.6)}

/* Factory */
.factory-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.factory-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);overflow:hidden;transition:transform .45s var(--ease),box-shadow .45s var(--ease)}
.factory-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-8px) scale(1.01)}
.factory-visual{height:380px;overflow:hidden;background:var(--gray-100)}
.factory-visual .zoom-wrap{width:100%;height:100%}
.factory-card h3{padding:20px 20px 8px;font-size:1.05rem;color:var(--navy-800)}
.factory-card p{padding:0 20px 20px;font-size:.85rem;color:var(--text-muted)}

/* FAQ */
.faq-list{max-width:720px;margin:0 auto}
.faq-item{border:1px solid var(--gray-200);border-radius:var(--radius);margin-bottom:12px;background:#fff;overflow:hidden}
.faq-item summary{padding:18px 24px;font-weight:600;color:var(--navy-800);cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:'+';font-size:1.2rem;color:var(--blue-600);transition:transform .3s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 24px 18px;color:var(--text-muted);font-size:.9rem;line-height:1.7}

/* CTA */
.cta-banner{padding:72px 0;background:linear-gradient(135deg,var(--blue-600),var(--blue-500));color:#fff;text-align:center}
.cta-inner h2{font-size:clamp(1.5rem,3vw,2rem);margin-bottom:12px}
.cta-inner p{opacity:.9;margin-bottom:28px}
.cta-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-list{display:flex;flex-direction:column;gap:20px;margin-top:24px}
.contact-row strong{display:block;font-size:.82rem;color:var(--text-muted);margin-bottom:4px}
.contact-row p{font-size:.9rem;color:var(--text-body);line-height:1.7}
.contact-row a{color:var(--blue-600)}
.contact-form{background:#fff;padding:32px;border-radius:var(--radius-lg);border:1px solid var(--gray-200);box-shadow:var(--shadow-sm)}
.contact-form h3{font-size:1.15rem;margin-bottom:20px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:.82rem;font-weight:500;margin-bottom:6px;color:var(--text-body)}
.form-group input,.form-group textarea{width:100%;padding:12px 14px;border:1px solid var(--gray-200);border-radius:8px;font-size:.9rem;background:var(--gray-50);outline:none;transition:all .25s}
.form-group input:focus,.form-group textarea:focus{border-color:var(--blue-500);background:#fff;box-shadow:0 0 0 3px rgba(0,102,204,.1)}
.form-group textarea{resize:vertical;min-height:100px}

/* Footer */
.footer{background:var(--navy-900);color:rgba(255,255,255,.65);padding:56px 0 24px;font-size:.88rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand h3{color:#fff;font-size:1rem;margin-bottom:12px}
.footer-brand p{font-size:.85rem;line-height:1.7}
.footer-col h4{color:#fff;font-size:.9rem;margin-bottom:14px}
.footer-col a,.footer-col p{display:block;font-size:.85rem;margin-bottom:8px;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{padding-top:20px;text-align:center;font-size:.78rem;color:rgba(255,255,255,.35)}

/* Back top */
.back-top{position:fixed;bottom:28px;right:28px;z-index:900;width:44px;height:44px;border-radius:12px;background:#fff;color:var(--blue-600);box-shadow:var(--shadow-md);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(12px);transition:all .3s}
.back-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--blue-600);color:#fff}

/* Zoom wrap */
.zoom-wrap{position:relative;display:block;width:100%;height:100%;padding:0;border:none;background:var(--gray-100);cursor:zoom-in;overflow:hidden}
.zoom-wrap img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .55s var(--ease)}
.zoom-wrap:hover img,.zoom-wrap:focus-visible img{transform:scale(1.08)}
.zoom-hint{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;background:rgba(12,26,46,.45);color:#fff;font-size:.82rem;font-weight:500;opacity:0;transition:opacity .35s var(--ease),backdrop-filter .35s;backdrop-filter:blur(0)}
.zoom-wrap:hover .zoom-hint,.zoom-wrap:focus-visible .zoom-hint{opacity:1;backdrop-filter:blur(2px)}
.zoom-hint svg{opacity:.9}

/* Lightbox */
.lightbox{position:fixed;inset:0;z-index:2000;display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s}
.lightbox.open{visibility:visible}
.lightbox.visible{opacity:1}
.lightbox-backdrop{position:absolute;inset:0;background:rgba(12,26,46,.88);backdrop-filter:blur(8px)}
.lightbox-dialog{position:relative;width:min(1100px,96vw);max-height:90vh;display:flex;align-items:center;justify-content:center;transform:scale(.92);transition:transform .4s var(--ease)}
.lightbox.visible .lightbox-dialog{transform:scale(1)}
.lightbox-stage{display:flex;align-items:center;justify-content:center;max-height:85vh}
.lightbox-img{max-width:100%;max-height:85vh;width:auto;height:auto;border-radius:var(--radius);box-shadow:0 24px 64px rgba(0,0,0,.45);opacity:0;transform:scale(.94);transition:opacity .35s var(--ease),transform .35s var(--ease)}
.lightbox-img.loaded{opacity:1;transform:scale(1)}
.lightbox-close{position:absolute;top:-12px;right:-12px;z-index:2;width:44px;height:44px;border-radius:50%;background:#fff;color:var(--navy-800);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);transition:all .25s}
.lightbox-close:hover{background:var(--blue-600);color:#fff;transform:scale(1.05)}
.lightbox-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.92);color:var(--navy-800);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);transition:all .25s}
.lightbox-nav:hover{background:var(--blue-600);color:#fff}
.lightbox-prev{left:-20px}
.lightbox-next{right:-20px}
.lightbox-nav.hidden{display:none}

/* Animations */
[data-animate]{opacity:0;transform:translateY(28px) scale(.97);transition:opacity .7s var(--ease),transform .7s var(--ease)}
[data-animate].visible{opacity:1;transform:translateY(0) scale(1)}
[data-stagger-grid] > [data-animate]{transform:translateY(36px) scale(.94)}
[data-stagger-grid] > [data-animate].visible{transform:translateY(0) scale(1)}

/* Responsive */
@media(max-width:1024px){
  .features-grid,.products-grid,.factory-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  .capability-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .carousel-arrow{opacity:1;width:40px;height:40px}
}
@media(max-width:768px){
  .nav{position:fixed;inset:0;background:rgba(12,26,46,.97);flex-direction:column;align-items:center;justify-content:center;gap:24px;transform:translateX(100%);transition:transform .35s}
  .nav.open{transform:translateX(0)}
  .nav a{color:#fff!important;font-size:1.1rem}
  .menu-toggle{display:flex}
  .header-phone,.header-actions .btn-sm{display:none}
  .lang-toggle{display:flex}
  .features-grid,.products-grid,.factory-grid,.capability-grid{grid-template-columns:1fr}
  .process-flow{gap:4px}
  .process-arrow{display:none}
  .stats-bar-inner{flex-wrap:wrap;padding:24px 0}
  .stats-bar-divider{display:none}
  .stats-bar-item{flex:1 1 40%}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:72px 0}
  .about-card{grid-template-columns:1fr}
  .product-gallery{grid-template-columns:1fr}
  .gallery-item{height:280px}
  .product-media,.factory-visual{height:280px}
  .about-image-wrap .zoom-wrap{height:300px}
  .lightbox-prev{left:8px}
  .lightbox-next{right:8px}
  .lightbox-close{top:8px;right:8px}
}