:root{--primary:#3B82F6;--secondary:#10B981;--bg-light:#F9FAFB;--text-dark:#1E293B;--text-light:#64748B;--border:#E2E8F0;--card-shadow:0 10px 25px -5px rgba(0, 0, 0, 0.05),0 8px 10px -6px rgba(0, 0, 0, 0.02)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-light);color:var(--text-dark);line-height:1.5}.container{max-width:1280px;margin:0 auto;padding:0 1.5rem}.site-header{background-color:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.header-container{display:flex;justify-content:space-between;align-items:center;height:70px}.logo a{font-size:1.8rem;font-weight:700;color:var(--primary);text-decoration:none;letter-spacing:-.5px}.logo span{font-weight:400;color:var(--text-light);font-size:1.2rem}.nav-list{display:flex;list-style:none;gap:2rem}.nav-list a{text-decoration:none;color:var(--text-dark);font-weight:500;transition:color .2s}.nav-list a:hover{color:var(--primary)}.hamburger{display:none;flex-direction:column;background:0 0;border:none;cursor:pointer;padding:0}.hamburger span{width:25px;height:3px;background-color:var(--text-dark);margin:2px 0;border-radius:2px;transition:.3s}.hero-section{background:linear-gradient(135deg,#f5f7fa 0,#e9ecf3 100%);padding:4rem 0;margin-bottom:3rem;border-bottom:1px solid var(--border)}.hero-section h1{font-size:2.8rem;font-weight:800;color:var(--text-dark);margin-bottom:1rem;line-height:1.2}.hero-section h1 span{color:var(--primary)}.hero-section p{font-size:1.3rem;color:var(--text-light);max-width:600px}.filter-section{margin-bottom:2rem}.filter-buttons{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.5rem}.filter-btn{padding:.6rem 1.5rem;background-color:#fff;border:1px solid var(--border);border-radius:30px;font-size:1rem;font-weight:500;color:var(--text-dark);cursor:pointer;transition:all .2s}.filter-btn.active,.filter-btn:hover{background-color:var(--primary);border-color:var(--primary);color:#fff}.products-table-section{margin-bottom:4rem}.section-title{font-size:2.2rem;font-weight:700;margin-bottom:2rem;position:relative}.section-title:after{content:'';display:block;width:60px;height:4px;background-color:var(--primary);margin-top:.5rem;border-radius:2px}.table-responsive{overflow-x:auto;border-radius:16px;box-shadow:var(--card-shadow)}.products-table{width:100%;border-collapse:collapse;background-color:#fff;border-radius:16px;overflow:hidden}.products-table th{text-align:left;padding:1.2rem 1rem;background-color:#f8fafc;font-weight:600;color:var(--text-dark);border-bottom:2px solid var(--border)}.products-table td{padding:1rem;border-bottom:1px solid var(--border);color:var(--text-light)}.products-table th:last-child{text-align:center}.products-table td:last-child{text-align:right}.products-table tr:last-child td{border-bottom:none}.products-table .product-title{font-weight:600;color:var(--text-dark)}.products-table .stock{color:var(--secondary);font-weight:500}.products-table .price{font-weight:700;color:var(--text-dark);font-size:1.2rem}.products-table .buy-link{display:inline-block;background-color:var(--primary);color:#fff;padding:.4rem 1.2rem;border-radius:20px;text-decoration:none;font-size:.95rem;font-weight:500;transition:background-color .2s}.products-table .buy-link:hover{background-color:#2563eb}.features-section{background-color:#fff;padding:4rem 0;margin-bottom:4rem;border-radius:32px;box-shadow:var(--card-shadow)}.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem}.feature-item{text-align:center}.feature-icon{font-size:2.5rem;margin-bottom:1rem}.feature-item h3{font-size:1.5rem;margin-bottom:.5rem;color:var(--text-dark)}.feature-item p{color:var(--text-light)}.faq-section{margin-bottom:4rem}.faq-grid{display:flex;flex-direction:column;gap:1rem}.faq-item{background-color:#fff;border-radius:16px;border:1px solid var(--border);overflow:hidden}.faq-question{width:100%;text-align:left;padding:1.5rem;background-color:#fff;border:none;font-size:1.2rem;font-weight:600;color:var(--text-dark);display:flex;justify-content:space-between;align-items:center;cursor:pointer}.faq-question .arrow{font-size:1.5rem;color:var(--primary);transition:transform .3s}.faq-item.active .faq-question .arrow{transform:rotate(180deg)}.faq-answer{padding:0 1.5rem 1.5rem;color:var(--text-light);line-height:1.8;display:none}.faq-item.active .faq-answer{display:block}.site-footer{background-color:#1e293b;color:#94a3b8;padding:2rem 0;text-align:center}.site-footer p{font-size:1rem}.filter-btn[data-category=all].active{background-color:var(--primary);border-color:var(--primary);color:#fff}@media (max-width:768px){.hero-section h1{font-size:2rem}.hero-section p{font-size:1.1rem}.features-grid{grid-template-columns:repeat(2,1fr)}.nav-list{display:none}.nav-list.active{display:flex;flex-direction:column;position:absolute;top:70px;left:0;width:100%;background-color:#fff;border-top:1px solid var(--border);padding:1rem 0;box-shadow:0 10px 15px -3px rgba(0,0,0,.1)}.nav-list.active li{text-align:center;padding:.5rem 0}.hamburger{display:flex}.products-table{font-size:.9rem;background-color:unset}.table-responsive{box-shadow:none}.products-table thead{display:none}.products-table tbody tr{display:block;margin-bottom:1.5rem;border:1px solid #ddd;border-radius:8px;padding:1rem;background-color:#fff}.products-table td{display:block;padding:.5rem 0;text-align:right;border-bottom:none}.products-table td:first-child{text-align:left}.products-table td::before{content:attr(data-label);float:left;font-weight:500;color:var(--text-light);font-size:.9rem}.products-table td:first-child::before{content:""}}@media (max-width:480px){.features-grid{grid-template-columns:1fr}.filter-buttons{gap:.5rem}.filter-btn{padding:.4rem 1rem;font-size:.9rem}}:root{--primary:#3B82F6;--secondary:#10B981;--bg-light:#F9FAFB;--text-dark:#1E293B;--text-light:#64748B;--border:#E2E8F0;--card-shadow:0 10px 25px -5px rgba(0, 0, 0, 0.05),0 8px 10px -6px rgba(0, 0, 0, 0.02);--hover-blue:#2563eb;--light-blue:#EFF6FF;--price-red:#ef4444;--success-green:#22c55e;--transition:all 0.3s ease;--card-radius:16px;--btn-radius:30px;--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 30px -10px rgba(59, 130, 246, 0.2)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-light);color:var(--text-dark);line-height:1.5}.breadcrumb{margin:30px 0;font-size:.95rem;color:var(--text-light)}.breadcrumb a{color:var(--primary);text-decoration:none;font-weight:500;transition:var(--transition)}.breadcrumb a:hover{color:var(--hover-blue);text-decoration:underline}.breadcrumb span{margin:0 8px}.product-d-detail{background:#fff;border-radius:var(--card-radius);padding:30px;box-shadow:var(--shadow);border:1px solid var(--border);margin-bottom:60px;display:grid;grid-template-columns:1fr 1fr;gap:40px}.product-d-info,.purchase-options{border:none}.product-d-title{font-size:2.2rem;font-weight:700;margin-bottom:20px;color:var(--text-dark);line-height:1.2}.product-d-price{font-size:2.5rem;font-weight:700;color:var(--price-red);margin-bottom:30px}.product-d-specs{margin-bottom:30px}.spec-row{display:flex;padding:15px 0;border-bottom:1px solid 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:var(--success-green)}.option-title{font-size:1.5rem;font-weight:700;margin-bottom:25px;color:var(--text-dark);display:flex;align-items:center;gap:10px}.option-title i{color:var(--primary)}.form-group{margin-bottom:25px}.form-label{display:block;margin-bottom:10px;color:var(--text-light);font-weight:500;font-size:.95rem}.required{color:var(--price-red)}.email-input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--btn-radius);font-size:1rem;transition:var(--transition);background-color:#fff}.email-input:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(59,130,246,.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:#fff;border-radius:var(--btn-radius);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(59,130,246,.1)}.quantity-btn{width:40px;height:40px;line-height:40px;border:none;background:var(--light-blue);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(59,130,246,.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:var(--btn-radius);background:#fff;cursor:pointer;transition:var(--transition);text-align:center;font-size:.85rem;font-weight:500;color:var(--text-light)}.payment-method.selected,.payment-method:hover{border-color:var(--primary);background:var(--light-blue);color:var(--text-dark)}.payment-method input[type=radio]{display:none}.payment-icon{margin-bottom:5px}.payment-icon img{width:32px;height:32px;border-radius:50%}.total-price{background:var(--light-blue);padding:15px 20px;border-radius:var(--card-radius);margin-bottom:25px;display:flex;justify-content:space-between;align-items:center;border:1px solid var(--border)}.total-label{font-size:1rem;color:var(--text-dark);font-weight:500;display:flex;align-items:center;gap:8px}.total-amount{font-size:1.8rem;font-weight:700;color:var(--primary)}.action-buttons{display:flex;gap:15px}.btn{padding:12px 25px;border:none;border-radius:var(--btn-radius);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);color:#fff}.btn-primary:hover{background:var(--hover-blue);box-shadow:var(--shadow-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-secondary{background:#f1f5f9;color:var(--text-dark);border:1px solid var(--border)}.btn-secondary:hover{background:#e2e8f0}.product-d-description{grid-column:1/-1;margin-top:30px;padding-top:30px;border-top:2px solid var(--border)}.description-d-title{font-size:1.8rem;font-weight:700;margin-bottom:25px;color:var(--text-dark);display:flex;align-items:center;gap:10px}.description-d-title i{color:var(--primary)}.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)}.security-notice{background:var(--light-blue);padding:20px;border-radius:var(--card-radius);margin-top:30px;display:flex;align-items:center;gap:15px;border:1px solid var(--border)}.security-icon{font-size:1.5rem;color:var(--primary)}.security-text{flex:1;color:var(--text-dark);font-size:.95rem;line-height:1.6}.related-products{margin-bottom:80px}.section-title{font-size:2.2rem;font-weight:700;margin-bottom:15px;text-align:center;color:var(--text-dark)}.section-title:after{content:'';display:block;width:60px;height:4px;background-color:var(--primary);margin:.5rem auto 0;border-radius:2px}.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:#fff;border-radius:var(--card-radius);padding:25px;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);border-color:var(--primary)}.ks-product-card-title{font-size:1.2rem;font-weight:600;margin-bottom:15px;color:var(--text-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(--price-red);font-weight:700;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:#fff;border-radius:var(--card-radius);max-width:900px;width:90%;max-height:90vh;overflow-y:auto;transform:scale(.9);transition:transform .3s ease;box-shadow:var(--shadow-hover);border:1px solid var(--border)}.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:700;color:var(--text-dark);gap:10px;font-size:24px;display:flex;align-items:center}.modal-title i{color:var(--primary)}.close-btn{font-size:24px;width:40px;height:40px;border:none;background:var(--bg-light);border-radius:50%;cursor:pointer;justify-content:center;color:var(--text-light);transition:var(--transition);display:flex;align-items:center}.close-btn:hover{background:var(--border);color:var(--text-dark);transform:rotate(90deg)}.modal-body{padding:30px;display:grid;grid-template-columns:repeat(2,1fr);gap:30px}.order-summary{background:var(--bg-light);padding:25px;border-radius:var(--card-radius);border:1px solid var(--border)}.summary-title{font-size:18px;font-weight:600;color:var(--text-dark);margin-bottom:20px;gap:8px;display:flex;align-items:center}.summary-title i{color:var(--primary)}.summary-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border)}.summary-row-clear-bt{border-bottom:none}.summary-row:last-child{border-bottom:none;padding-top:15px;margin-top:5px;border-top:2px solid var(--border)}.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:var(--light-blue);border:2px solid var(--primary);padding:15px;border-radius:var(--card-radius);display:flex;align-items:center;gap:15px;margin-bottom:20px}.selected-payment .payment-icon{font-size:2rem;color:var(--primary)}.qr-section{text-align:center;padding:20px;margin-bottom:20px}.qr-code{width:200px;height:200px;margin:0 auto 15px;background:#fff;padding:10px;border-radius:var(--card-radius);display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--text-light);border:1px solid var(--border)}.address-section{background:#fff;border:2px solid var(--border);border-radius:var(--card-radius);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:var(--primary);color:#fff;border:none;padding:8px 15px;border-radius:var(--btn-radius);font-size:13px;cursor:pointer;transition:var(--transition);display:flex;align-items:center;gap:5px}.copy-btn:hover{background:var(--hover-blue)}.copy-btn.copied{background:var(--success-green)}.btn-confirm{background:var(--primary);color:#fff;padding:15px 25px;border:none;border-radius:var(--btn-radius);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){background:var(--hover-blue);transform:translateY(-2px);box-shadow:var(--shadow-hover)}.btn-confirm:disabled{opacity:.6;cursor:not-allowed}.countdown-section{background:var(--light-blue);padding:20px;border-radius:var(--card-radius);margin-bottom:25px;text-align:center;border:1px solid var(--border)}.countdown-title{font-size:14px;color:var(--text-dark);margin-bottom:10px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:5px}.countdown-title i{color:var(--primary)}.countdown-timer{font-size:36px;font-weight:700;color:var(--primary);font-family:Courier New,monospace;letter-spacing:2px}.countdown-timer.warning{animation:blink 1s ease-in-out infinite}@keyframes blink{0%,50%{opacity:1}51%,to{opacity:.3}}.countdown-hint{font-size:12px;color:var(--text-light);margin-top:8px}.toast-container{position:fixed;top:20px;right:20px;z-index:9999;pointer-events:none}.toast{background:#fff;color:#fff;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}.toast.error{background:#ef4444}.toast.warning{border-left-color:#f59e0b;background:linear-gradient(135deg,#fffbeb,#fef3c7)}.toast.info{border-left-color:#3b82f6;background:linear-gradient(135deg,#eff6ff,#dbeafe)}.toast.info .toast-icon{color:#3b82f6}.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:#fff;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:#3b82f6}@keyframes progress{0%{transform:scaleX(1)}to{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}.product-d-title{font-size:1.8rem}.product-d-price{font-size:2rem}.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}}