:root{--primary:#2c5a7a;--primary-dark:#1e3a5f;--secondary:#0f1c2e;--accent:#2c3e66;--bg-light:#f4f7fc;--bg-card:#ffffff;--text-dark:#334e68;--text-light:#4f6f8f;--border:#e9edf2;--shadow:0 10px 25px -5px rgba(0, 0, 0, 0.05),0 8px 10px -6px rgba(0, 0, 0, 0.02);--shadow-hover:0 20px 25px -12px rgba(0, 0, 0, 0.1);--transition:all 0.3s cubic-bezier(0.4, 0, 0.2, 1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,sans-serif;background:var(--bg-light);color:var(--text-dark);line-height:1.5;scroll-behavior:smooth}.container{max-width:1280px;margin:0 auto;padding:0 24px}.header{background:rgba(255,255,255,.95);backdrop-filter:blur(10px);box-shadow:0 1px 3px rgba(0,0,0,.05);position:sticky;top:0;z-index:1000}.header-container{display:flex;justify-content:space-between;align-items:center;height:70px}.logo{display:flex;align-items:center;text-decoration:none;font-weight:800;font-size:1.6rem;letter-spacing:-.02em;background:linear-gradient(135deg,#1f2b48,#2c3e66);-webkit-background-clip:text;background-clip:text;color:transparent}.nav-list{display:flex;gap:32px;list-style:none}.nav-link{text-decoration:none;font-weight:500;color:var(--primary-dark);transition:var(--transition);position:relative}.nav-link:hover{color:var(--primary)}.mobile-toggle{display:none;flex-direction:column;gap:5px;background:0 0;border:none;cursor:pointer}.mobile-toggle span{width:25px;height:2px;background:var(--primary-dark);transition:var(--transition)}.hero{padding:80px 0 60px;background:linear-gradient(135deg,#f0f4fa 0,#e8eef5 100%)}.hero-content{text-align:center;max-width:800px;margin:0 auto}.hero h1{font-size:3.5rem;font-weight:800;background:linear-gradient(135deg,#1e3a5f 0,#2c5a7a 100%);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:20px;letter-spacing:-.02em}.hero p{font-size:1.25rem;color:var(--text-light);max-width:600px;margin:0 auto}.category-filter{margin:40px 0 20px}.filter-buttons{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}.filter-btn{background:#fff;border:1.5px solid var(--border);padding:10px 24px;border-radius:40px;font-weight:600;color:var(--text-dark);cursor:pointer;transition:var(--transition)}.filter-btn.active,.filter-btn:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow)}.products-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:32px;margin:40px 0 60px}.product-card{background:var(--bg-card);border-radius:20px;overflow:hidden;transition:var(--transition);box-shadow:var(--shadow);border:1px solid var(--border)}.product-card:hover{box-shadow:var(--shadow-hover)}.product-content{padding:24px}.product-title{font-size:1.5rem;font-weight:700;color:var(--primary-dark);margin-bottom:12px}.product-desc{color:var(--text-light);margin-bottom:16px;line-height:1.6;font-size:.95rem}.product-meta{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:20px;padding-top:12px;border-top:1px solid var(--border)}.product-price{font-size:1.8rem;font-weight:800;color:var(--primary)}.product-price small{font-size:.9rem;font-weight:400;color:var(--text-light)}.product-stock{color:#2c7a4d;background:#e8f5ed;padding:4px 12px;border-radius:20px;font-size:.8rem;font-weight:600}.buy-link{display:inline-block;width:100%;background:var(--primary-dark);color:#fff;text-align:center;padding:14px;border-radius:12px;text-decoration:none;font-weight:600;transition:var(--transition)}.buy-link:hover{background:#0f2a48;box-shadow:0 4px 8px rgba(0,0,0,.1)}.section-title{text-align:center;font-size:2.5rem;font-weight:700;margin-bottom:16px;color:var(--primary-dark)}.section-sub{text-align:center;color:var(--text-light);margin-bottom:48px;font-size:1.1rem}.features-grid,.process-grid,.security-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:32px;margin:48px 0}.feature-card,.process-step,.security-card{background:var(--bg-card);padding:32px 24px;border-radius:24px;text-align:center;transition:var(--transition);border:1px solid var(--border)}.feature-card:hover,.process-step:hover,.security-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}.feature-icon{font-size:2.5rem;margin-bottom:20px}.feature-card h3,.process-step h3,.security-card h3{font-size:1.3rem;margin-bottom:12px;color:var(--primary-dark)}.faq-grid{max-width:800px;margin:0 auto 60px}.faq-item{background:var(--bg-card);border-radius:16px;margin-bottom:16px;border:1px solid var(--border);overflow:hidden}.faq-question{padding:20px 24px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-weight:700;font-size:1.1rem;color:var(--primary-dark);transition:var(--transition)}.faq-question:hover{background:#f9fbfd}.faq-icon{font-size:1.5rem;transition:var(--transition)}.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .3s ease-out;color:var(--text-light);line-height:1.7}.faq-item.active .faq-answer{padding:0 24px 24px 24px;max-height:500px}.faq-item.active .faq-icon{transform:rotate(45deg)}.footer{background:var(--secondary);color:#fff;padding:32px 0;text-align:center;margin-top:60px}.footer a{color:#fff}.footer p{opacity:.8;font-size:.9rem}@media (max-width:768px){.mobile-toggle{display:flex}.nav-menu{position:fixed;top:70px;left:-100%;width:100%;height:calc(100vh - 70px);background:#fff;transition:var(--transition);z-index:999}.nav-menu.active{left:0}.nav-list{flex-direction:column;align-items:center;padding:40px 0;gap:24px}.hero h1{font-size:2rem}.section-title{font-size:1.8rem}.products-grid{grid-template-columns:1fr;gap:20px}.filter-buttons{gap:8px}.filter-btn{padding:6px 16px;font-size:.9rem}}@media (min-width:769px) and (max-width:1024px){.products-grid{grid-template-columns:repeat(2,1fr)}}:root{--primary:#2c5a7a;--primary-dark:#1e3a5f;--secondary:#0f1c2e;--accent:#2c3e66;--bg-light:#f4f7fc;--bg-card:#ffffff;--text-dark:#334e68;--text-light:#4f6f8f;--border:#e9edf2;--shadow:0 10px 25px -5px rgba(0, 0, 0, 0.05),0 8px 10px -6px rgba(0, 0, 0, 0.02);--shadow-hover:0 20px 25px -12px rgba(0, 0, 0, 0.1);--transition:all 0.3s cubic-bezier(0.4, 0, 0.2, 1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,system-ui,-apple-system,'Segoe 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var(--border)}.spec-row:last-child{border-bottom:none}.spec-label{flex:0 0 140px;color:var(--text-light);font-weight:500;display:flex;align-items:center;gap:8px}.spec-value{flex:1;font-weight:600;color:var(--text-dark)}.spec-value.highlight{color:#2c7a4d}.option-title{font-size:1.3rem;font-weight:600;margin-bottom:25px;color:var(--primary-dark)}.form-group{margin-bottom:25px}.form-label{display:block;margin-bottom:10px;color:var(--text-light);font-weight:500;font-size:.95rem}.required{color:#ef4444}.email-input{width:100%;padding:12px 15px;border:1px solid var(--border);border-radius:12px;font-size:1rem;transition:var(--transition);background:var(--bg-card)}.email-input:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(44,90,122,.1)}.email-hint{margin-top:8px;font-size:.85rem;color:var(--text-light);display:flex;align-items:center;gap:5px}.quantity-selector{display:flex;align-items:center;background:var(--bg-card);border-radius:12px;border:1px solid var(--border);overflow:hidden;transition:var(--transition);max-width:150px}.quantity-selector:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(44,90,122,.1)}.quantity-btn{width:40px;height:40px;line-height:40px;border:none;background:#f0f4fa;color:var(--text-dark);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;transition:var(--transition)}.quantity-btn:hover{background:rgba(44,90,122,.1)}.quantity-btn:disabled{opacity:.5;cursor:not-allowed}.quantity-input{flex:1;height:40px;text-align:center;border:none;background:0 0;font-size:1rem;font-weight:600;color:var(--text-dark);outline:0;min-width:60px}.quantity-input::-webkit-inner-spin-button,.quantity-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.quantity-input[type=number]{-moz-appearance:textfield}.payment-section{margin-bottom:20px}.payment-label{font-size:.95rem;color:var(--text-dark);margin-bottom:8px;font-weight:600}.payment-methods{display:flex;gap:8px;flex-wrap:wrap}.payment-method{flex:1;min-width:120px;padding:12px 8px;border:1px solid var(--border);border-radius:12px;background:var(--bg-card);cursor:pointer;transition:var(--transition);text-align:center;font-size:.85rem;font-weight:600}.payment-method.selected,.payment-method:hover{border-color:var(--primary);background:#f0f4fa}.payment-method input[type=radio]{display:none}.payment-icon{margin-bottom:5px}.payment-icon>img{border-radius:10px}.total-price{background:linear-gradient(135deg,#fef3c7,#fed7aa);padding:15px;border-radius:16px;margin-bottom:25px;display:flex;justify-content:space-between;align-items:center}.total-label{font-size:1rem;color:#92400e;font-weight:500}.total-amount{font-size:1.8rem;font-weight:700;color:#92400e}.action-buttons{display:flex;gap:15px}.btn{padding:15px 25px;border:none;border-radius:12px;font-size:1rem;cursor:pointer;transition:var(--transition);font-weight:600;flex:1;text-align:center;text-decoration:none;display:inline-block}.btn-primary{background:var(--primary-dark);color:#fff}.btn-primary:hover{background:#0f2a48;box-shadow:var(--shadow-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-secondary{background:#f0f4fa;color:var(--text-dark)}.btn-secondary:hover{background:#e0e8f0}.product-d-description{grid-column:1/-1;margin-top:20px}.description-d-title{font-size:1.5rem;margin-bottom:25px;color:var(--primary-dark);display:flex;align-items:center;gap:10px}.description-d-content{line-height:1.8;color:var(--text-light)}.description-d-content p{margin-bottom:20px;font-size:1.05rem;line-height:1.8}.description-d-content ol,.description-d-content ul{margin:20px 0;padding-left:25px}.description-d-content li{margin-bottom:10px;line-height:1.6}.description-d-content h3{font-size:1.3rem;color:var(--text-dark);margin:25px 0 15px;font-weight:600;display:flex;align-items:center;gap:10px}.description-d-content strong{color:var(--text-dark)}.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;margin:20px 0}.feature-item{display:flex;align-items:center;gap:10px;padding:15px;background:rgba(44,90,122,.05);border-radius:12px}.feature-icon{color:#2c7a4d;font-size:1.2rem}.security-notice{background:linear-gradient(135deg,#e0f2fe,#bae6fd);padding:20px;border-radius:20px;margin-top:30px;display:flex;align-items:center;gap:15px}.security-icon{font-size:1.5rem;color:#0369a1}.security-text{flex:1;color:#0369a1;font-size:.95rem;line-height:1.6}.related-products{margin-bottom:80px}.section-title{font-size:1.8rem;font-weight:700;margin-bottom:15px;text-align:center;color:var(--primary-dark)}.section-subtitle{font-size:1.1rem;color:var(--text-light);text-align:center;margin-bottom:30px;max-width:600px;margin-left:auto;margin-right:auto}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.ks-product-card{background:var(--bg-card);border-radius:20px;padding:24px;box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border);display:flex;flex-direction:column}.ks-product-card:hover{box-shadow:var(--shadow-hover)}.ks-product-card-title{font-size:1.2rem;font-weight:600;margin-bottom:15px;color:var(--primary-dark);flex-grow:0;display:flex;align-items:center;gap:8px}.ks-product-card-description{color:var(--text-light);margin-bottom:15px;font-size:.95rem;line-height:1.6;flex-grow:1}.ks-product-card-price{color:var(--primary);font-weight:600;font-size:1.3rem;margin-bottom:15px;flex-grow:0}.ks-product-card-action{flex-grow:0}.modal-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.7);z-index:2000;opacity:0;transition:opacity .3s ease}.modal-overlay.active{display:flex;align-items:center;justify-content:center;opacity:1}.modal-content{background:var(--bg-card);border-radius:20px;max-width:900px;width:90%;max-height:90vh;overflow-y:auto;transform:scale(.9);transition:transform .3s ease;box-shadow:0 20px 60px rgba(0,0,0,.3)}.modal-overlay.active .modal-content{transform:scale(1)}.modal-header{padding:25px 30px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.modal-title{font-weight:600;color:var(--text-dark);gap:10px;font-size:24px;display:flex;align-items:center}.close-btn{font-size:24px;width:40px;height:40px;border:none;background:#f5f5f5;border-radius:50%;cursor:pointer;justify-content:center;color:#666;transition:all .3s;display:flex;align-items:center}.close-btn:hover{background:#e0e0e0;color:#333;transform:rotate(90deg)}.modal-body{padding:30px;display:grid;grid-template-columns:repeat(2,1fr);gap:30px}.order-summary{background:linear-gradient(135deg,#f8f9fa,#e9ecef);padding:25px;border-radius:15px}.summary-title{font-size:18px;font-weight:600;color:var(--text-dark);margin-bottom:20px;gap:8px;display:flex;align-items:center}.summary-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid rgba(0,0,0,.08)}.summary-row-clear-bt{border-bottom:none}.summary-row:last-child{border-bottom:none;padding-top:15px;margin-top:5px;border-top:2px solid rgba(0,0,0,.1)}.summary-label{width:120px;color:var(--text-light);font-size:14px}.summary-value{font-weight:600;color:var(--text-dark)}.summary-value.total{font-size:24px;color:var(--primary)}.payment-title{font-size:16px;font-weight:600;color:var(--text-dark);margin-bottom:15px;display:flex;align-items:center;gap:8px}.selected-payment{background:#f0fdf4;border:2px solid #2c7a4d;padding:15px;border-radius:10px;display:flex;align-items:center;gap:15px;margin-bottom:20px}.selected-payment .payment-icon{font-size:2rem;color:#2c7a4d}.qr-section{text-align:center;padding:20px;margin-bottom:20px}.qr-code{width:200px;height:200px;margin:0 auto 15px;background:var(--bg-card);padding:10px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:14px;color:#999;border:1px solid var(--border)}.address-section{background:var(--bg-card);border:2px solid var(--border);border-radius:10px;padding:15px;margin-bottom:15px;position:relative}.address-label{font-size:13px;color:var(--text-light);margin-bottom:8px;display:flex;align-items:center;gap:5px}.address-value{font-size:14px;word-break:break-all;color:var(--text-dark);line-height:1.4;padding-right:40px;width:85%}.copy-btn{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:#2c7a4d;color:#fff;border:none;padding:8px 15px;border-radius:6px;font-size:13px;cursor:pointer;transition:all .3s;display:flex;align-items:center;gap:5px}.copy-btn:hover{background:#1e5a3a}.copy-btn.copied{background:#2c7a4d}.btn-confirm{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;padding:15px 25px;border:none;border-radius:12px;font-size:1rem;cursor:pointer;transition:var(--transition);font-weight:600;width:100%;display:flex;align-items:center;justify-content:center;gap:8px}.btn-confirm:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 5px 15px rgba(30,58,95,.4)}.btn-confirm:disabled{opacity:.6;cursor:not-allowed}.countdown-section{background:linear-gradient(135deg,#fee2e2,#fecaca);padding:20px;border-radius:12px;margin-bottom:25px;text-align:center}.countdown-title{font-size:14px;color:#991b1b;margin-bottom:10px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:5px}.countdown-timer{font-size:36px;font-weight:700;color:#dc2626;font-family:'Courier New',monospace;letter-spacing:2px}.countdown-timer.warning{animation:blink 1s ease-in-out infinite}@keyframes blink{0%,50%{opacity:1}100%,51%{opacity:.3}}.countdown-hint{font-size:12px;color:#7f1d1d;margin-top:8px}.toast-container{position:fixed;top:20px;right:20px;z-index:9999;pointer-events:none}.toast{background:var(--bg-card);color:var(--text-dark);border-radius:8px;box-shadow:0 4px 20px rgba(0,0,0,.15);padding:16px 20px;margin-bottom:10px;min-width:300px;max-width:400px;display:flex;align-items:center;transform:translateX(100%);opacity:0;transition:all .3s cubic-bezier(.4, 0, .2, 1);pointer-events:auto;position:relative}.toast.show{transform:translateX(0);opacity:1}.toast.success{background:#28a745;color:#fff}.toast.error{background:#ef4444;color:#fff}.toast.warning{border-left-color:#f59e0b;background:linear-gradient(135deg,#fffbeb,#fef3c7)}.toast.info{border-left-color:var(--primary);background:linear-gradient(135deg,#eff6ff,#dbeafe)}.toast.info .toast-icon{color:var(--primary)}.toast-icon{margin-right:12px;flex-shrink:0}.toast-content{flex:1}.toast-title{font-weight:600;font-size:14px;margin-bottom:2px;color:#374151}.toast-message{font-size:13px;line-height:1.4}.toast-close{position:absolute;top:8px;right:8px;background:0 0;border:none;font-size:18px;color:rgba(0,0,0,.5);cursor:pointer;padding:4px;line-height:1;opacity:.7;transition:opacity .2s}.toast-close:hover{opacity:1}.toast-progress{position:absolute;bottom:0;left:0;height:3px;background:rgba(0,0,0,.1);border-radius:0 0 8px 8px;transform-origin:left;animation:progress linear}.toast.success .toast-progress{background:#10b981}.toast.error .toast-progress{background:#ef4444}.toast.warning .toast-progress{background:#f59e0b}.toast.info .toast-progress{background:var(--primary)}@keyframes progress{0%{transform:scaleX(1)}100%{transform:scaleX(0)}}@media (max-width:1024px){.product-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.breadcrumb{margin:20px 0}.product-d-detail{grid-template-columns:1fr;gap:20px;padding:20px}.feature-list{grid-template-columns:1fr}.action-buttons{flex-direction:column}.payment-methods{display:grid;grid-template-columns:repeat(2,1fr)}.payment-method{min-width:auto}.modal-body{grid-template-columns:1fr;gap:20px}.product-grid{grid-template-columns:1fr}}@media (max-width:480px){.product-d-title{font-size:1.5rem}.product-d-price{font-size:1.8rem}.spec-label{flex:0 0 120px;font-size:.9rem}.spec-value{font-size:.9rem}.description-d-title{font-size:1.3rem}.modal-content{width:95%;max-height:95vh;margin:10px}.modal-header{padding:20px}.modal-title{font-size:20px}.modal-body{padding:20px}.address-value{font-size:12px}}