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0;border-radius:0 var(--radius) var(--radius) 0;font-style:italic}@media (max-width:768px){.article-da-detail{padding:25px}.article-da-title{font-size:26px}.article-da-meta{flex-direction:column;gap:10px}}:root{--primary:#0066FF;--primary-dark:#0052CC;--primary-light:#4D94FF;--secondary:#00D4FF;--dark:#1A1A2E;--dark-light:#2D3047;--light:#F8F9FA;--gray:#6C757D;--gray-light:#E9ECEF;--success:#28A745;--white:#FFFFFF;--bg-gradient:linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);--text-primary:#1A1A2E;--text-secondary:#6C757D;--border-color:#E9ECEF;--price-red:#ef4444;--transition:all 0.3s ease;--card-radius:12px;--btn-radius:30px;--shadow:0 10px 30px rgba(0, 0, 0, 0.1);--shadow-hover:0 15px 35px rgba(0, 0, 0, 0.15);--bs-card-spacer-y:30px;--bs-card-spacer-x:30px;--bs-card-title-spacer-y:0.5rem;--bs-card-title-color:#1A1A2E;--bs-card-subtitle-color:#6C757D;--bs-card-border-width:0px;--bs-card-border-color:#E9ECEF;--bs-card-border-radius:12px;--bs-card-box-shadow:0 10px 30px rgba(0, 0, 0, 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var(--bs-card-spacer-x);box-shadow:var(--shadow);border:1px solid var(--border-color);margin-bottom:40px;display:grid;grid-template-columns:1fr 1fr;gap:40px;transition:var(--transition);position:relative;overflow:hidden}.product-d-detail::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--secondary))}.product-d-detail:hover{box-shadow:var(--shadow-hover)}.product-d-title{font-size:2rem;font-weight:700;margin-bottom:15px;line-height:1.2}.product-d-price{font-size:2.5rem;font-weight:800;color:var(--price-red);margin-bottom:25px;display:flex;align-items:center;gap:5px}.product-d-price::before{content:'$';font-size:1.5rem;color:var(--text-secondary);font-weight:700}.product-d-specs{background:var(--light);border-radius:var(--card-radius);padding:20px;margin-bottom:25px}.spec-row{display:flex;padding:12px 0;border-bottom:1px solid var(--border-color)}.spec-row:last-child{border-bottom:none}.spec-label{flex:0 0 140px;color:var(--text-secondary);font-weight:600;display:flex;align-items:center;gap:8px}.spec-label i{color:var(--primary);width:20px}.spec-value{flex:1;font-weight:600;color:var(--text-primary)}.spec-value.highlight{color:var(--success);display:inline-block}.option-title{font-size:1.4rem;font-weight:700;margin-bottom:25px;color:var(--text-primary);display:flex;align-items:center;gap:10px;padding-bottom:10px;border-bottom:2px solid var(--gray-light)}.option-title i{color:var(--primary)}.form-group{margin-bottom:25px}.form-label{display:block;margin-bottom:10px;color:var(--text-primary);font-weight:600;font-size:.95rem}.required{color:var(--price-red);margin-left:2px}.email-input{width:100%;padding:14px 16px;border:2px solid var(--border-color);border-radius:var(--btn-radius);font-size:1rem;transition:var(--transition);background:var(--white)}.email-input:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 4px rgba(0,102,255,.1)}.email-hint{margin-top:8px;font-size:.85rem;color:var(--text-secondary);display:flex;align-items:center;gap:5px}.email-hint i{color:var(--primary)}.quantity-selector{display:flex;align-items:center;background:var(--white);border-radius:var(--btn-radius);border:2px solid var(--border-color);overflow:hidden;transition:var(--transition);max-width:150px}.quantity-selector:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(0,102,255,.1)}.quantity-btn{width:44px;height:44px;border:none;background:var(--white);color:var(--primary);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;transition:var(--transition);font-weight:700}.quantity-btn:hover:not(:disabled){background:var(--primary);color:#fff}.quantity-btn:disabled{opacity:.4;cursor:not-allowed;background:var(--gray-light)}.quantity-input{flex:1;height:44px;text-align:center;border:none;background:0 0;font-size:1.1rem;font-weight:700;color:var(--text-primary);outline:0;min-width:70px}.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:25px}.payment-methods{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:10px}.payment-method{padding:16px 8px;border:2px solid var(--border-color);border-radius:var(--btn-radius);background:var(--white);cursor:pointer;transition:var(--transition);text-align:center;font-size:.9rem;font-weight:600;display:flex;flex-direction:column;align-items:center;gap:8px}.payment-method.selected,.payment-method:hover{border-color:var(--primary);background:var(--light);transform:translateY(-2px);box-shadow:var(--shadow)}.payment-method input[type=radio]{display:none}.payment-icon{margin-bottom:5px}.payment-icon img{border-radius:8px;width:40px;height:40px;object-fit:cover}.payment-text{color:var(--text-primary);font-size:.9rem}.payment-method.selected .payment-text{color:var(--primary-dark);font-weight:700}.total-price{background:linear-gradient(135deg,#fef3c7,#fed7aa);padding:20px 25px;border-radius:var(--card-radius);margin-bottom:25px;display:flex;justify-content:space-between;align-items:center;border:1px solid #fcd34d}.total-label{font-size:1.1rem;color:#92400e;font-weight:600;display:flex;align-items:center;gap:8px}.total-label i{color:#f59e0b}.total-amount{font-size:2.2rem;font-weight:800;color:#92400e}.total-amount::before{content:'$';font-size:1.3rem;margin-right:2px;color:#b45309}.action-buttons{display:flex;gap:15px}.btn{padding:16px 28px;border:none;border-radius:var(--btn-radius);font-size:1.1rem;cursor:pointer;transition:var(--transition);font-weight:700;flex:1;text-align:center;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;letter-spacing:.5px}.btn-secondary{background:linear-gradient(135deg,#f5f7fa,#e9ecef);color:var(--text-primary)}.btn-secondary:hover{background:linear-gradient(135deg,#e9ecef,#dee2e6);transform:translateY(-2px)}.product-d-description{grid-column:1/-1;margin-top:20px}.product-d-description::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--secondary))}.description-d-title{font-size:1.6rem;margin-bottom:25px;color:var(--text-primary);display:flex;align-items:center;gap:10px;padding-bottom:15px;border-bottom:2px solid var(--gray-light)}.description-d-title i{color:var(--primary)}.description-d-content{line-height:1.8;color:var(--text-secondary)}.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:1.7}.description-d-content h3{font-size:1.4rem;color:var(--text-primary);margin:30px 0 20px;font-weight:700;display:flex;align-items:center;gap:10px;padding-left:15px;border-left:4px solid var(--primary)}.description-d-content strong{color:var(--text-primary);font-weight:700}.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin:30px 0}.feature-item{display:flex;align-items:center;gap:12px;padding:18px;background:rgba(0,102,255,.05);border-radius:var(--btn-radius);transition:var(--transition)}.feature-item:hover{transform:translateX(5px);background:rgba(0,102,255,.1)}.feature-icon{color:var(--success);font-size:1.3rem;width:28px}.feature-text{font-weight:600;color:var(--text-primary)}.security-notice{background:linear-gradient(135deg,#dbeafe,#bfdbfe);padding:25px;border-radius:var(--card-radius);margin-top:35px;display:flex;align-items:center;gap:20px;border:1px solid var(--primary-light)}.security-icon{font-size:2rem;color:var(--primary);background:#fff;width:60px;height:60px;display:flex;align-items:center;justify-content:center;border-radius:50%}.security-text{flex:1;color:var(--primary-dark);font-size:1rem;line-height:1.6;font-weight:500}.related-products{margin:60px 0}.section-title{font-size:2rem;font-weight:800;margin-bottom:30px;text-align:center;background:linear-gradient(90deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;display:flex;align-items:center;justify-content:center;gap:12px}.section-title i{-webkit-text-fill-color:var(--primary);background:0 0}.section-subtitle{font-size:1.1rem;color:var(--text-secondary);text-align:center;margin-bottom:40px;max-width:600px;margin-left:auto;margin-right:auto;padding:0 20px}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.ks-product-card{background:var(--white);border-radius:var(--card-radius);padding:25px;box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border-color);display:flex;flex-direction:column;position:relative;overflow:hidden}.ks-product-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--secondary));transform:translateX(-100%);transition:transform .4s ease}.ks-product-card:hover::before{transform:translateX(0)}.ks-product-card:hover{box-shadow:var(--shadow-hover)}.ks-product-card-title{font-size:1.25rem;font-weight:700;margin-bottom:12px;color:var(--text-primary);display:flex;align-items:center;gap:8px}.ks-product-card-description{color:var(--text-secondary);margin-bottom:20px;font-size:.95rem;line-height:1.6;flex-grow:1}.ks-product-card-price{color:var(--price-red);font-weight:800;font-size:1.5rem;margin-bottom:20px;display:flex;align-items:center;gap:4px}.ks-product-card-price::before{content:'$';font-size:1rem;color:var(--text-secondary);font-weight:700}.ks-product-card-action .btn{width:100%;padding:12px;font-size:1rem}@media (max-width:1024px){.product-grid{grid-template-columns:repeat(2,1fr)}.feature-list{grid-template-columns:1fr}}@media (max-width:768px){.breadcrumb{margin:20px 0;padding:10px 15px}.product-d-detail{grid-template-columns:1fr;gap:30px;padding:20px}.product-d-title{font-size:1.6rem}.product-d-price{font-size:2rem}.spec-row{flex-direction:column;gap:5px}.spec-label{flex:none}.payment-methods{grid-template-columns:repeat(2,1fr)}.action-buttons{flex-direction:column}.total-price{flex-direction:column;gap:10px;text-align:center}.product-grid{grid-template-columns:1fr}.security-notice{flex-direction:column;text-align:center}}@media (max-width:480px){.product-d-title{font-size:1.4rem}.product-d-price{font-size:1.8rem}.option-title{font-size:1.2rem}.description-d-title{font-size:1.3rem}.section-title{font-size:1.6rem}.quantity-selector{max-width:100%}.feature-item{padding:15px}.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}}.product-grid-mode{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.product-card{background:var(--white);border-radius:var(--radius);padding:25px;transition:var(--transition);border:1px solid var(--gray-light);position:relative;overflow:hidden}.product-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--secondary));transform:translateX(-100%);transition:transform .4s ease}.product-card:hover::before{transform:translateX(0)}.product-card:hover{box-shadow:var(--shadow-hover)}.product-card-title{font-size:1.2rem;font-weight:700;margin-bottom:12px;color:var(--dark);line-height:1.4}.product-card-description{color:var(--gray);font-size:.9rem;margin-bottom:20px;line-height:1.6;min-height:60px}.product-card-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding:10px 0;border-top:1px solid var(--gray-light);border-bottom:1px solid var(--gray-light)}.product-card-stock{font-size:.9rem;color:var(--gray)}.product-card-stock i{color:var(--success);margin-right:5px}.product-card-price{font-size:1.8rem;font-weight:800;color:var(--primary);margin-bottom:15px}.product-card-price::before{content:'$';font-size:1rem;color:var(--gray);margin-right:2px}.product-card .btn{width:100%;padding:12px;font-size:1rem}.features-section{margin:60px 0}.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}.feature-card{background:var(--white);border-radius:var(--radius);padding:30px 20px;text-align:center;transition:var(--transition);box-shadow:var(--shadow);border:1px solid var(--gray-light)}.feature-card:hover{box-shadow:0 20px 40px rgba(0,102,255,.15);border-color:var(--primary-light)}.feature-icon-wrapper{width:80px;height:80px;background:linear-gradient(135deg,rgba(0,102,255,.1) 0,rgba(0,212,255,.1) 100%);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 20px}.feature-icon-wrapper i{font-size:32px;color:var(--primary)}.feature-card h3{font-size:20px;font-weight:700;margin-bottom:10px;color:var(--dark)}.feature-card p{color:var(--gray);font-size:14px;line-height:1.6}@media (max-width:1024px){.features-grid{grid-template-columns:repeat(2,1fr)}.product-grid-mode{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.hero h1{font-size:36px}.hero p{font-size:18px}.product-grid-mode{grid-template-columns:1fr}.product-display-mode{justify-content:center}}@media (max-width:576px){.features-grid{grid-template-columns:1fr}.hero h1{font-size:28px}}.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: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 #e0e0e0;display:flex;align-items:center;justify-content:space-between}.modal-title{font-weight:600;color:var(--text-primary);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-primary);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-secondary);font-size:14px}.summary-value{font-weight:600;color:var(--text-primary)}.summary-value.total{font-size:24px;color:var(--price-red)}.payment-title{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:15px;display:flex;align-items:center;gap:8px}.selected-payment{background:#f0fdf4;border:2px solid var(--primary);padding:15px;border-radius:10px;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:10px;display:flex;align-items:center;justify-content:center;font-size:14px;color:#999;border:1px solid #e0e0e0}.address-section{background:#fff;border:2px solid #e0e0e0;border-radius:10px;padding:15px;margin-bottom:15px;position:relative}.address-label{font-size:13px;color:var(--text-secondary);margin-bottom:8px;display:flex;align-items:center;gap:5px}.address-value{font-size:14px;word-break:break-all;color:var(--text-primary);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:6px;font-size:13px;cursor:pointer;transition:all .3s;display:flex;align-items:center;gap:5px}.copy-btn:hover{background:#05a050}.copy-btn.copied{background:#4caf50}.btn-confirm{background:linear-gradient(135deg,var(--primary),#05a050);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){transform:translateY(-2px);box-shadow:0 5px 15px rgba(7,193,96,.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}51%,to{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:#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:768px){.page-a-title{font-size:32px}.page-a-subtitle{font-size:16px}.modal-body{grid-template-columns:1fr;gap:20px}}