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4px)}.admin-content{flex:1;overflow-y:auto;padding:2rem}.admin-section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.admin-section-header h2{font-size:1.75rem;font-weight:800;color:#0f172a;margin:0}.admin-lang-badge{padding:.5rem 1rem;background:linear-gradient(135deg,#8b5cf6,#6366f1);color:#fff;border-radius:8px;font-weight:700;font-size:.85rem}.admin-form{max-width:900px}.admin-form-section{background:#fff;padding:2rem;border-radius:16px;box-shadow:0 1px 3px #0000000d;border:1px solid #e2e8f0}.admin-form-group{margin-bottom:1.5rem}.admin-form-group label{display:block;font-weight:700;color:#0f172a;margin-bottom:.5rem;font-size:.95rem}.admin-input,.admin-textarea{width:100%;padding:.875rem 1rem;border:2px solid #e2e8f0;border-radius:10px;font-size:1rem;font-family:inherit;color:#0f172a;background:#f8fafc;transition:all .3s ease}.admin-input:focus,.admin-textarea:focus{outline:none;border-color:#06b6d4;background:#fff;box-shadow:0 0 0 4px #06b6d41a}.admin-textarea{resize:vertical;min-height:80px}.admin-subsection-title{font-size:1.25rem;font-weight:800;color:#0f172a;margin:2rem 0 1rem;padding-bottom:.5rem;border-bottom:2px solid #e2e8f0}.admin-card{background:#f8fafc;padding:1.5rem;border-radius:12px;margin-bottom:1.5rem;border:1px solid #e2e8f0}.admin-card h4{font-size:1.1rem;font-weight:700;color:#06b6d4;margin-bottom:1rem}@media (max-width: 1024px){.admin-sidebar{width:240px}.admin-content{padding:1.5rem}}@media (max-width: 768px){.admin-main{flex-direction:column}.admin-sidebar{width:100%;border-right:none;border-bottom:1px solid #e2e8f0}.admin-header-content{flex-direction:column;align-items:flex-start}.admin-header-actions{width:100%;flex-wrap:wrap}.admin-btn-primary,.admin-btn-secondary{flex:1;text-align:center}.admin-content{padding:1rem}.admin-form-section{padding:1.5rem}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #0f172a;--primary-light: #1e293b;--accent-color: #06b6d4;--accent-dark: #0891b2;--accent-light: #22d3ee;--secondary-color: #8b5cf6;--background-color: #f1f5f9;--surface-color: #ffffff;--text-primary: #0f172a;--text-secondary: #475569;--border-color: #e2e8f0;--gradient-primary: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);--gradient-accent: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);--gradient-purple: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);--gradient-mesh: radial-gradient(at 27% 37%, hsla(215, 98%, 61%, .05) 0px, transparent 50%), radial-gradient(at 97% 21%, hsla(125, 98%, 72%, .05) 0px, transparent 50%), radial-gradient(at 52% 99%, hsla(354, 98%, 61%, .05) 0px, transparent 50%), radial-gradient(at 10% 29%, hsla(256, 96%, 67%, .05) 0px, transparent 50%);--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2.5rem;--spacing-xl: 4rem;--spacing-2xl: 6rem;--font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Helvetica Neue", sans-serif;--shadow-sm: 0 1px 2px rgba(0, 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0;position:relative;z-index:1}.hero-title{font-size:2.75rem;margin-bottom:var(--spacing-md);font-weight:900;letter-spacing:-.03em;line-height:1.1}.hero-subtitle{font-size:1.35rem;background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--spacing-md);font-weight:700}.hero-description{font-size:1.05rem;line-height:1.8;margin-bottom:var(--spacing-lg);opacity:.92;max-width:600px;margin-left:auto;margin-right:auto}.btn-primary{display:inline-block;padding:1rem 2rem;background:var(--gradient-accent);color:#fff;text-decoration:none;border-radius:12px;font-weight:700;font-size:1rem;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 14px #06b6d459;position:relative;overflow:hidden}.btn-primary:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(255,255,255,.2) 0%,transparent 100%);opacity:0;transition:opacity .3s 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var(--background-color)}.timeline-year{background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-weight:800;margin-bottom:var(--spacing-xs);font-size:1rem}.timeline-content h4{color:var(--primary-color);margin-bottom:var(--spacing-xs);font-weight:700}.timeline-content p{color:var(--text-secondary);margin:0;line-height:1.7}.products-grid{display:flex;flex-direction:column;gap:var(--spacing-md)}.card{background-color:var(--surface-color);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-md);transition:all .4s cubic-bezier(.4,0,.2,1);border:1px solid rgba(0,0,0,.04);position:relative}.card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient-accent);opacity:0;transition:opacity .3s ease}.card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl);border-color:#06b6d433}.card:hover:before{opacity:1}.card-image .placeholder-image{aspect-ratio:16 / 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ease}.partnership-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl)}.partnership-card:hover:before{opacity:.03}.partnership-logo .placeholder-logo{background:linear-gradient(135deg,#e0f2fe,#bae6fd);border-radius:16px;display:flex;align-items:center;justify-content:center;color:var(--accent-dark);font-weight:700;height:120px;margin-bottom:var(--spacing-md);box-shadow:var(--shadow-sm);border:1px solid rgba(255,255,255,.8);position:relative}.partnership-name{color:var(--primary-color);margin-bottom:var(--spacing-sm);font-weight:800;font-size:1.15rem}.partnership-description{color:var(--text-secondary);margin-bottom:var(--spacing-md);line-height:1.75}.partnership-period{display:inline-block;padding:.4rem .9rem;background:var(--gradient-purple);color:#fff;font-weight:700;font-size:.85rem;border-radius:8px;box-shadow:0 2px 8px #8b5cf640}.footer{background:var(--gradient-primary);color:#fff;padding:var(--spacing-xl) 0 var(--spacing-md);position:relative;overflow:hidden}.footer:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 80% 20%,rgba(6,182,212,.1) 0%,transparent 50%);pointer-events:none}.footer-content{display:flex;flex-direction:column;gap:var(--spacing-lg);margin-bottom:var(--spacing-lg);position:relative}.footer-section h3,.footer-section h4{margin-bottom:var(--spacing-sm);font-weight:800}.footer-section h3{background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.footer-section p{opacity:.85;margin-bottom:var(--spacing-xs);line-height:1.7}.footer-links{list-style:none}.footer-links li{margin-bottom:.5rem}.footer-links a{color:#fff;text-decoration:none;opacity:.85;transition:all .3s ease;font-weight:500}.footer-links a:hover{opacity:1;padding-left:.5rem;color:var(--accent-light)}.footer-bottom{text-align:center;padding-top:var(--spacing-md);border-top:1px solid rgba(255,255,255,.15);opacity:.75;font-size:.875rem;position:relative}@media (min-width: 768px){.container{padding:0 var(--spacing-lg);max-width:720px}h1{font-size:2.75rem}h2{font-size:2.25rem}.nav-toggle{display:none}.nav-menu{display:flex;flex-direction:row;position:static;box-shadow:none;gap:var(--spacing-xs);background:transparent}.nav-menu li{border-bottom:none}.nav-link{padding:.6rem 1rem;border-radius:10px;position:relative}.nav-link:hover{background-color:#06b6d41a;padding-left:1rem}.nav-link.active:after{content:"";position:absolute;bottom:5px;left:1rem;right:1rem;height:3px;background:var(--gradient-accent);border-radius:2px}.hero-title{font-size:3.5rem}.hero-subtitle{font-size:1.65rem}.about-content{flex-direction:row;gap:var(--spacing-lg)}.about-image{flex:0 0 250px}.about-text{flex:1}.products-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}.books-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-lg)}.book-card{flex-direction:row}.book-cover{flex:0 0 150px}.book-cover img{max-width:100%;margin:0;height:auto}.book-cover .placeholder-image{max-width:100%;margin:0;height:100%}.partnerships-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}.footer-content{flex-direction:row;justify-content:space-between}.footer-section{flex:1}}@media (min-width: 1024px){.container{max-width:1200px;padding:0 var(--spacing-xl)}h1{font-size:3.5rem}h2{font-size:2.5rem}.hero-title{font-size:4.5rem}.hero-subtitle{font-size:1.85rem}.hero-description{font-size:1.2rem}.about-image{flex:0 0 350px}.profile-photo{max-width:350px}.products-grid{grid-template-columns:repeat(3,1fr);gap:var(--spacing-lg)}.books-grid{grid-template-columns:repeat(3,1fr)}.book-card{flex-direction:column}.book-cover{flex:initial}.book-cover img,.book-cover .placeholder-image{max-width:200px;margin:var(--spacing-md) auto;height:auto}.partnerships-grid{grid-template-columns:repeat(2,1fr);gap:var(--spacing-lg)}.section{padding:5rem 0}.section-title{font-size:2.75rem;margin-bottom:var(--spacing-xl)}}@media (min-width: 1280px){.container{max-width:1280px}}.language-toggle{padding:.6rem 1.2rem;background:var(--gradient-accent);color:#fff;border:none;border-radius:10px;font-weight:700;font-size:.9rem;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 8px #06b6d440;white-space:nowrap}.language-toggle:hover{transform:translateY(-2px);box-shadow:0 4px 12px #06b6d459}.language-toggle:active{transform:translateY(0)}.nav-language-desktop{display:block}@media (min-width: 768px){.language-toggle{padding:.6rem 1.2rem;font-size:.9rem}}.contact-section{background:var(--surface-color)}.contact-content{display:grid;grid-template-columns:1fr;gap:var(--spacing-xl);margin-top:var(--spacing-xl)}.contact-info{display:flex;flex-direction:column;gap:var(--spacing-lg)}.contact-info-item{display:flex;gap:var(--spacing-md);padding:var(--spacing-lg);background:linear-gradient(135deg,#06b6d40d,#8b5cf60d);border-radius:16px;border:1px solid rgba(6,182,212,.1);transition:all .3s ease}.contact-info-item:hover{transform:translate(8px);box-shadow:var(--shadow-lg);border-color:#06b6d44d}.contact-icon{flex-shrink:0;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--gradient-accent);border-radius:12px;color:#fff;box-shadow:0 4px 12px #06b6d44d}.contact-info-item h3{color:var(--primary-color);font-size:1.125rem;margin-bottom:.5rem;font-weight:700}.contact-info-item p{color:var(--text-secondary);margin:0;font-size:1rem}.contact-form{background:var(--background-color);padding:var(--spacing-xl);border-radius:20px;box-shadow:var(--shadow-md);border:1px solid rgba(0,0,0,.04)}.form-row{display:grid;grid-template-columns:1fr;gap:var(--spacing-md)}.form-group{margin-bottom:var(--spacing-md)}.form-group label{display:block;margin-bottom:var(--spacing-xs);color:var(--primary-color);font-weight:600;font-size:.95rem}.form-input{width:100%;padding:.875rem 1.125rem;border:2px solid var(--border-color);border-radius:12px;font-size:1rem;font-family:var(--font-primary);color:var(--text-primary);background:var(--surface-color);transition:all .3s ease}.form-input:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 4px #06b6d41a;transform:translateY(-2px)}.form-input::placeholder{color:var(--text-secondary);opacity:.6}.form-textarea{resize:vertical;min-height:120px}.btn-submit{width:100%;margin-top:var(--spacing-md);display:flex;align-items:center;justify-content:center;gap:.5rem;font-size:1.05rem;cursor:pointer}.btn-submit:disabled{opacity:.7;cursor:not-allowed}.btn-submit.submitting{animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.02)}}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.form-message{margin-top:var(--spacing-md);padding:var(--spacing-md);border-radius:12px;font-weight:600;text-align:center;animation:slideInUp .4s ease-out}@keyframes slideInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.form-success{background:linear-gradient(135deg,#22c55e1a,#22c55e0d);color:#15803d;border:1px solid rgba(34,197,94,.3)}@media (min-width: 768px){.contact-content{grid-template-columns:1fr 1.5fr;gap:var(--spacing-xl)}.form-row{grid-template-columns:repeat(2,1fr)}.contact-form{padding:var(--spacing-xl)}.btn-submit{width:auto;min-width:200px}}@media (min-width: 1024px){.contact-content{gap:calc(var(--spacing-xl) + var(--spacing-lg))}.contact-form{padding:calc(var(--spacing-xl) + var(--spacing-md))}}.product-category-filter{display:flex;gap:var(--spacing-sm);margin-bottom:var(--spacing-xl);justify-content:center;flex-wrap:wrap;padding:var(--spacing-sm) 0}.category-tab{padding:.75rem 1.5rem;background:var(--surface-color);border:2px solid var(--border-color);border-radius:12px;font-weight:600;font-size:.95rem;color:var(--text-primary);cursor:pointer;transition:all .3s ease;white-space:nowrap}.category-tab:hover{border-color:var(--accent-color);transform:translateY(-2px);box-shadow:var(--shadow-md)}.category-tab.active{background:var(--gradient-accent);color:#fff;border-color:transparent;box-shadow:0 4px 14px #06b6d459}.products-count{text-align:center;color:var(--text-secondary);margin-bottom:var(--spacing-md);font-weight:500;font-size:.95rem}.card{cursor:pointer}.card-image img{width:100%;height:200px;object-fit:cover;transition:transform .3s ease}.card:hover .card-image img{transform:scale(1.05)}.card-patent{margin-top:var(--spacing-sm);padding-top:var(--spacing-sm);border-top:1px solid var(--border-color);color:var(--text-secondary);font-size:.85rem}.card-patent small{font-family:Courier New,monospace}.no-products{text-align:center;padding:var(--spacing-xl);color:var(--text-secondary);font-size:1.1rem}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);display:flex;align-items:center;justify-content:center;z-index:2000;padding:var(--spacing-md);animation:fadeIn .3s ease;overflow-y:auto}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:var(--surface-color);border-radius:20px;max-width:800px;width:100%;max-height:90vh;overflow-y:auto;position:relative;box-shadow:var(--shadow-xl);animation:slideUp .3s ease;margin:auto}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.modal-close{position:absolute;top:var(--spacing-md);right:var(--spacing-md);background:var(--primary-color);color:#fff;border:none;width:40px;height:40px;border-radius:50%;font-size:1.5rem;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;z-index:10}.modal-close:hover{background:var(--accent-color);transform:rotate(90deg)}.modal-header{padding:var(--spacing-xl);padding-right:calc(var(--spacing-xl) + 50px);border-bottom:1px solid var(--border-color)}.modal-title{color:var(--primary-color);margin-bottom:var(--spacing-md);font-size:1.75rem;font-weight:800;line-height:1.3}.modal-badges{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.modal-body{padding:var(--spacing-xl)}.modal-image{margin-bottom:var(--spacing-lg);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-md)}.modal-image img{width:100%;height:auto;display:block}.modal-image.placeholder-image{background:linear-gradient(135deg,#e0f2fe,#bae6fd);height:300px;display:flex;align-items:center;justify-content:center;color:var(--accent-dark);font-size:2rem;font-weight:700}.modal-description h3{color:var(--primary-color);margin-bottom:var(--spacing-md);font-size:1.25rem}.modal-description p{color:var(--text-secondary);line-height:1.75;margin-bottom:var(--spacing-lg)}.modal-details{background:linear-gradient(135deg,#06b6d40d,#8b5cf60d);padding:var(--spacing-lg);border-radius:16px;margin-bottom:var(--spacing-lg)}.modal-detail-item{display:flex;justify-content:space-between;padding:var(--spacing-sm) 0;border-bottom:1px solid var(--border-color)}.modal-detail-item:last-child{border-bottom:none}.modal-detail-item strong{color:var(--primary-color);font-weight:700}.modal-detail-item span{color:var(--text-secondary);text-align:right;max-width:60%}.modal-certification{margin-top:var(--spacing-lg)}.modal-certification h3{color:var(--primary-color);margin-bottom:var(--spacing-md)}.modal-certification img{width:100%;height:auto;border-radius:12px;box-shadow:var(--shadow-md)}.modal-footer{padding:var(--spacing-lg) var(--spacing-xl);background:var(--background-color);border-top:1px solid var(--border-color);border-radius:0 0 20px 20px}.modal-contact-note{text-align:center;color:var(--text-secondary);margin:0;font-size:.95rem}.modal-section{margin-bottom:var(--spacing-lg)}.modal-section h3{color:var(--primary-color);margin-bottom:var(--spacing-md);font-size:1.25rem}.modal-list{list-style:none;padding:0;margin:0}.modal-list li{padding:var(--spacing-sm) var(--spacing-md);margin-bottom:var(--spacing-sm);background:linear-gradient(135deg,#06b6d40d,#8b5cf60d);border-left:4px solid var(--accent-color);border-radius:8px;color:var(--text-secondary);line-height:1.6}.modal-list li:last-child{margin-bottom:0}@media (min-width: 768px){.product-category-filter{gap:var(--spacing-md)}.category-tab{padding:.85rem 1.75rem;font-size:1rem}.modal-content{margin:var(--spacing-xl) auto}.modal-meta-grid{grid-template-columns:repeat(4,1fr)}.sub-products-grid{grid-template-columns:repeat(2,1fr)}.sub-product-card{flex-direction:row}.sub-product-image{width:180px;height:auto;min-height:200px}}@media (min-width: 1024px){.modal-detail-item{flex-direction:row}.sub-products-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 767px){.modal-overlay{padding:0;align-items:flex-start}.modal-content{max-width:100%;max-height:100vh;border-radius:0;margin:0}.modal-meta-grid{grid-template-columns:1fr}.modal-detail-item{flex-direction:column;gap:.25rem}.modal-detail-item span{text-align:left;max-width:100%}.sub-product-card{flex-direction:column}.sub-product-image{width:100%;height:180px}}