:root {
  --primary: #0f2a5e;
  --primary-light: #1a3d8f;
  --accent: #2196f3;
  --accent-light: #42a5f5;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-400: #94a3b8;
  --gray-600: #475569;
  --gray-800: #1e293b;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow: 0 4px 20px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',sans-serif;color:var(--gray-800);background:var(--white);line-height:1.6}
.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}

/* Topbar */
.topbar{background:var(--primary);color:#a8c4e8;font-size:.82rem;padding:.5rem 0}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap}
.topbar-left{display:flex;gap:1.5rem;align-items:center}
.topbar-left span{display:flex;align-items:center;gap:.4rem}
.topbar-left i{color:var(--accent-light)}
.whatsapp-link{display:flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:50%;background:#25D366;color:var(--white);font-size:.9rem;transition:var(--transition)}
.whatsapp-link:hover{background:#1ebe5a;transform:scale(1.08)}
.lang-switcher{display:flex;gap:.3rem}
.lang-btn{padding:.25rem .6rem;border-radius:6px;color:#a8c4e8;font-size:.8rem;font-weight:500;transition:var(--transition);cursor:pointer}
.lang-btn:hover,.lang-btn.active{background:rgba(255,255,255,.15);color:var(--white)}

/* Navbar */
.navbar{background:var(--white);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:100;transition:box-shadow var(--transition)}
.navbar.scrolled{box-shadow:var(--shadow)}
.navbar-inner{display:flex;align-items:center;justify-content:space-between;padding-top:.9rem;padding-bottom:.9rem;gap:1rem}
.logo{display:flex;align-items:center;gap:.6rem}
.logo-mark{height:88px;width:88px;border-radius:16px;flex-shrink:0}
.logo-img{height:128px;width:auto;max-width:320px;object-fit:contain}
.logo-text{font-size:1.6rem;font-weight:800;letter-spacing:-.5px}
.logo-umbrella{color:var(--primary)}
.logo-chem{color:var(--accent)}
.nav-links{list-style:none;display:flex;gap:.25rem}
.nav-link{padding:.5rem .9rem;border-radius:8px;font-weight:500;font-size:.92rem;color:var(--gray-600);transition:var(--transition)}
.nav-link:hover,.nav-link.active{color:var(--primary);background:var(--gray-100)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:.4rem}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--gray-800);border-radius:2px;transition:var(--transition)}

/* Flash */
.flash-container{position:fixed;top:80px;right:1.5rem;z-index:9999;display:flex;flex-direction:column;gap:.5rem}
.flash{padding:.8rem 1.2rem;border-radius:var(--radius);font-size:.9rem;font-weight:500;display:flex;align-items:center;gap:.5rem;box-shadow:var(--shadow);animation:slideIn .3s ease}
.flash-success{background:#dcfce7;color:#166534;border:1px solid #bbf7d0}
.flash-error{background:#fee2e2;color:#991b1b;border:1px solid #fecaca}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* Hero */
.hero{position:relative;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 50%,#1565c0 100%);min-height:600px;display:flex;align-items:center;overflow:hidden;padding:5rem 0 7rem}
.hero-bg{position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z' fill='%23ffffff' fill-opacity='0.04'/></svg>")}
.hero-content{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}
.hero-text{color:var(--white)}
.hero-badge{display:inline-flex;align-items:center;background:rgba(255,255,255,.15);color:rgba(255,255,255,.9);padding:.4rem 1rem;border-radius:50px;font-size:.82rem;font-weight:600;letter-spacing:.5px;text-transform:uppercase;margin-bottom:1.5rem;border:1px solid rgba(255,255,255,.2)}
.hero-text h1{font-size:clamp(2.2rem,4vw,3.5rem);font-weight:900;line-height:1.15;margin-bottom:1.2rem;letter-spacing:-1px}
.hero-accent{color:var(--accent-light)}
.hero-text p{font-size:1.1rem;color:rgba(255,255,255,.8);margin-bottom:2rem;max-width:500px}
.hero-btns{display:flex;gap:1rem;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.75rem;border-radius:var(--radius);font-weight:600;font-size:.95rem;cursor:pointer;border:none;transition:var(--transition)}
.btn-primary{background:var(--accent);color:var(--white)}
.btn-primary:hover{background:#1976d2;transform:translateY(-2px);box-shadow:0 8px 24px rgba(33,150,243,.4)}
.btn-outline{background:transparent;color:var(--white);border:2px solid rgba(255,255,255,.5)}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:var(--white)}
.btn-white{background:var(--white);color:var(--primary)}
.btn-white:hover{background:var(--gray-100);transform:translateY(-2px)}
.btn-secondary{background:var(--gray-200);color:var(--gray-800)}
.btn-secondary:hover{background:var(--gray-400);color:var(--white)}
.hero-visual{position:relative;display:flex;flex-direction:column;gap:1rem;align-items:flex-end}
.hero-card{background:rgba(255,255,255,.12);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:var(--radius);padding:1rem 1.5rem;display:flex;align-items:center;gap:1rem;color:var(--white);min-width:220px}
.hero-icon{font-size:1.8rem;color:var(--accent-light)}
.hero-card strong{display:block;font-weight:700}
.hero-card span{font-size:.8rem;color:rgba(255,255,255,.7)}
.hero-orb{position:absolute;border-radius:50%;filter:blur(60px);pointer-events:none}
.orb1{width:300px;height:300px;background:rgba(33,150,243,.2);top:-50px;right:-50px}
.orb2{width:200px;height:200px;background:rgba(255,255,255,.05);bottom:0;right:100px}
.hero-wave{position:absolute;bottom:0;left:0;right:0;line-height:0}
.floating{animation:float 4s ease-in-out infinite}
.delay1{animation-delay:-2s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* Stats */
.stats-section{padding:3rem 0;background:var(--gray-50);border-bottom:1px solid var(--gray-200)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;text-align:center}
.stat-item{padding:1.5rem}
.stat-num{font-size:2.8rem;font-weight:900;color:var(--primary);line-height:1}
.stat-item span{font-size:2.8rem;font-weight:900;color:var(--accent)}
.stat-item p{color:var(--gray-600);font-weight:500;margin-top:.5rem}

/* Section */
.section{padding:5rem 0}
.section-header{text-align:center;margin-bottom:3.5rem}
.section-tag{display:inline-block;background:var(--accent);color:var(--white);padding:.3rem .9rem;border-radius:50px;font-size:.78rem;font-weight:700;letter-spacing:.5px;text-transform:uppercase;margin-bottom:.75rem}
.section-header h2{font-size:clamp(1.8rem,3vw,2.5rem);font-weight:800;color:var(--primary);letter-spacing:-1px;margin-bottom:.75rem}
.section-header p{color:var(--gray-600);max-width:560px;margin:0 auto;font-size:1.05rem}
.section-cta{text-align:center;margin-top:3rem}

/* Products Grid */
.products-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.75rem}
.product-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);border:1px solid var(--gray-200)}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.product-img-wrap{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--gray-100)}
.product-img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.product-card:hover .product-img-wrap img{transform:scale(1.08)}
.product-img-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--gray-100),var(--gray-200));font-size:3rem;color:var(--gray-400)}
.product-img-placeholder.large{min-height:350px;font-size:6rem}
.product-overlay{position:absolute;inset:0;background:rgba(15,42,94,.6);display:flex;align-items:center;justify-content:center;color:var(--white);font-size:1.5rem;opacity:0;transition:var(--transition)}
.product-card:hover .product-overlay{opacity:1}
.product-info{padding:1.25rem 1.5rem}
.product-cat{font-size:.75rem;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.5px}
.product-info h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin:.4rem 0 .5rem}
.product-info p{color:var(--gray-600);font-size:.9rem;line-height:1.5}
.product-link{display:inline-flex;align-items:center;gap:.4rem;color:var(--accent);font-weight:600;font-size:.88rem;margin-top:.75rem}

/* Product Detail */
.product-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.product-detail-img{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.product-detail-img img{width:100%;aspect-ratio:1;object-fit:cover}
.product-detail-info .product-cat{font-size:.8rem;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.5px}
.product-detail-info h2{font-size:2rem;font-weight:800;color:var(--primary);margin:.5rem 0 1rem;letter-spacing:-.5px}
.product-desc{color:var(--gray-600);line-height:1.8;margin-bottom:1.5rem}
.product-specs{background:var(--gray-50);border-radius:var(--radius);padding:1.5rem;margin-bottom:1.5rem;border:1px solid var(--gray-200)}
.product-specs h4{font-weight:700;color:var(--primary);margin-bottom:.75rem}
.specs-content{color:var(--gray-600);white-space:pre-wrap;font-size:.95rem}

/* Blog */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.75rem}
.blog-grid.large{grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}
.blog-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);border:1px solid var(--gray-200)}
.blog-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.blog-img-wrap{aspect-ratio:16/9;overflow:hidden;background:var(--gray-100)}
.blog-img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.blog-card:hover .blog-img-wrap img{transform:scale(1.05)}
.blog-img-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:2.5rem;color:var(--gray-400);background:linear-gradient(135deg,var(--gray-100),var(--gray-200))}
.blog-info{padding:1.25rem 1.5rem}
.blog-date{font-size:.78rem;color:var(--gray-400);display:flex;align-items:center;gap:.3rem}
.blog-info h3{font-size:1.05rem;font-weight:700;color:var(--primary);margin:.5rem 0 .5rem;line-height:1.4}
.blog-info p{color:var(--gray-600);font-size:.88rem;line-height:1.5}
.blog-link{display:inline-flex;align-items:center;gap:.4rem;color:var(--accent);font-weight:600;font-size:.88rem;margin-top:.75rem}
.blog-detail-container{max-width:800px;margin:0 auto}
.blog-detail-img{width:100%;border-radius:var(--radius-lg);margin-bottom:2rem;aspect-ratio:16/9;object-fit:cover}
.blog-content{color:var(--gray-800);line-height:1.9;font-size:1.05rem}
.blog-content p{margin-bottom:1.2rem}
.blog-content h2,.blog-content h3{color:var(--primary);margin:2rem 0 .8rem;font-weight:700}
.blog-back{margin-top:2.5rem}
.blog-meta{color:rgba(255,255,255,.7);font-size:.9rem;display:flex;align-items:center;gap.5rem;margin-top:.75rem}

/* Why Section */
.why-section{background:var(--gray-50)}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}
.why-card{background:var(--white);border-radius:var(--radius-lg);padding:2rem;text-align:center;border:1px solid var(--gray-200);transition:var(--transition)}
.why-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--accent)}
.why-icon{width:64px;height:64px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1rem;font-size:1.4rem;color:var(--white)}
.why-card h3{font-size:1rem;font-weight:700;color:var(--primary);margin-bottom:.4rem}
.why-card span{font-size:.82rem;color:var(--gray-400)}

/* FAQ */
.faq-container{max-width:800px;margin:0 auto}
.faq-list{display:flex;flex-direction:column;gap:.75rem}
.faq-item{background:var(--white);border-radius:var(--radius);border:1px solid var(--gray-200);overflow:hidden}
.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;background:none;border:none;cursor:pointer;font-size:1rem;font-weight:600;color:var(--primary);text-align:left;gap:1rem;transition:background var(--transition)}
.faq-question:hover{background:var(--gray-50)}
.faq-item.open .faq-question{background:var(--primary);color:var(--white)}
.faq-question i{transition:transform var(--transition);flex-shrink:0;color:var(--accent)}
.faq-item.open .faq-question i{transform:rotate(180deg);color:var(--white)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease}
.faq-item.open .faq-answer{max-height:400px;padding:1.25rem 1.5rem}
.faq-answer p{color:var(--gray-600);line-height:1.7}

/* CTA Banner */
.cta-banner{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--white);text-align:center;padding:5rem 2rem}
.cta-banner h2{font-size:2.2rem;font-weight:800;margin-bottom:.75rem}
.cta-banner p{color:rgba(255,255,255,.8);margin-bottom:2rem;font-size:1.1rem}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:3rem;align-items:start}
.contact-info h3{font-size:1.5rem;font-weight:700;color:var(--primary);margin-bottom:1.5rem}
.contact-item{display:flex;gap:1rem;margin-bottom:1.5rem;align-items:flex-start}
.contact-icon{width:48px;height:48px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--white);flex-shrink:0}
.contact-item strong{display:block;font-weight:600;color:var(--primary);margin-bottom:.2rem}
.contact-item p{color:var(--gray-600);font-size:.95rem}
.social-btn{width:40px;height:40px;background:var(--gray-100);border-radius:var(--radius);display:inline-flex;align-items:center;justify-content:center;color:var(--primary);transition:var(--transition);margin-right:.4rem}
.social-btn:hover{background:var(--primary);color:var(--white)}
.contact-form-wrap{background:var(--gray-50);padding:2rem;border-radius:var(--radius-lg);border:1px solid var(--gray-200)}
.contact-form-wrap h3{font-size:1.3rem;font-weight:700;color:var(--primary);margin-bottom:1.5rem}
.contact-form .form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.form-group{margin-bottom:1.2rem}
.form-group label{display:block;font-weight:600;font-size:.88rem;color:var(--gray-800);margin-bottom:.4rem}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:.7rem 1rem;border:1.5px solid var(--gray-200);border-radius:var(--radius);font-size:.95rem;font-family:inherit;transition:border-color var(--transition);background:var(--white)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--accent)}
.form-group textarea{resize:vertical}

/* Page Hero */
.page-hero{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--white);padding:4rem 0 3rem}
.page-hero h1{font-size:clamp(1.8rem,3vw,2.8rem);font-weight:800;letter-spacing:-.5px}
.page-hero p{color:rgba(255,255,255,.8);margin-top:.5rem;font-size:1.05rem}
.page-hero.small{padding:3rem 0 2rem}
.breadcrumb{display:flex;align-items:center;gap:.5rem;font-size:.85rem;color:rgba(255,255,255,.7);margin-bottom:.75rem;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.7)}
.breadcrumb a:hover{color:var(--white)}
.breadcrumb i{font-size:.65rem}

/* Filter */
.filter-bar{display:flex;gap:.75rem;flex-wrap:wrap;margin-bottom:2.5rem}
.filter-btn{padding:.5rem 1.25rem;border-radius:50px;background:var(--gray-100);color:var(--gray-600);font-weight:500;font-size:.88rem;transition:var(--transition)}
.filter-btn:hover,.filter-btn.active{background:var(--primary);color:var(--white)}

/* Empty State */
.empty-state{text-align:center;padding:4rem 2rem;color:var(--gray-400)}
.empty-state i{font-size:3rem;margin-bottom:1rem;display:block}
.empty-state p{font-size:1.1rem}

/* Footer */
.footer{background:var(--gray-800);color:var(--gray-400);padding:4rem 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3rem}
.footer-logo{font-size:1.5rem;font-weight:800;margin-bottom:1rem;display:flex;align-items:center;gap:.6rem}
.footer-logo .logo-mark{height:76px;width:76px;border-radius:16px}
.footer-logo-img{height:88px;width:auto;max-width:320px;object-fit:contain}
.footer-brand p{font-size:.9rem;line-height:1.7;margin-bottom:1.5rem}
.social-links{display:flex;gap:.5rem}
.social-links a{width:36px;height:36px;border-radius:8px;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;color:var(--gray-400);transition:var(--transition)}
.social-links a:hover{background:var(--accent);color:var(--white)}
.footer-links h4,.footer-contact h4,.footer-langs h4{font-size:.95rem;font-weight:700;color:var(--white);margin-bottom:1rem}
.footer-links ul{list-style:none}
.footer-links li{margin-bottom:.5rem}
.footer-links a{color:var(--gray-400);font-size:.9rem;transition:color var(--transition)}
.footer-links a:hover{color:var(--white)}
.footer-contact p{display:flex;align-items:center;gap:.5rem;font-size:.9rem;margin-bottom:.6rem}
.footer-contact i{color:var(--accent);width:16px}
.footer-lang-btn{display:block;padding:.3rem .6rem;border-radius:6px;font-size:.85rem;color:var(--gray-400);margin-bottom:.3rem;transition:var(--transition)}
.footer-lang-btn:hover,.footer-lang-btn.active{color:var(--white);background:rgba(255,255,255,.08)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:1.5rem 0;text-align:center;font-size:.85rem}
.mt-2{margin-top:1rem}

/* Responsive */
@media(max-width:1024px){
  .hero-content{grid-template-columns:1fr;gap:2rem;text-align:center}
  .hero-visual{display:none}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .product-detail-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .topbar-left{gap:.75rem;font-size:.75rem}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--white);flex-direction:column;padding:1rem 1.5rem;box-shadow:var(--shadow);border-top:1px solid var(--gray-200)}
  .nav-links.open{display:flex}
  .nav-toggle{display:flex}
  .products-grid,.blog-grid{grid-template-columns:1fr}
  .why-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .contact-form .form-row{grid-template-columns:1fr}
  .hero-btns{justify-content:center}
}
@media(max-width:480px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .why-grid{grid-template-columns:1fr}
  .topbar-left{flex-direction:column;gap:.25rem}
}