:root{--primary:#2A6DF4;--primary-light:#eef4ff;--text-dark:#1a1f36;--text-soft:#4a5568;--bg-light:#f9fafc;--border-light:#e2e8f0;--card-shadow:0 8px 20px rgba(0, 0, 0, 0.02),0 2px 6px rgba(0, 0, 0, 0.03);--hover-shadow:0 12px 30px rgba(42, 109, 244, 0.08);--radius-md:16px;--radius-sm:12px;--transition:all 0.2s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',sans-serif;background-color:var(--bg-light);color:var(--text-dark);line-height:1.5}a{text-decoration:none;color:var(--primary);font-weight:500}.site-header{background:#fff;border-bottom:1px solid var(--border-light);position:sticky;top:0;z-index:100;backdrop-filter:blur(8px);background:rgba(255,255,255,.92)}.header-container{max-width:1280px;margin:0 auto;padding:.8rem 2rem;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center}.logo-area a{font-weight:700;font-size:1.6rem;color:var(--text-dark);letter-spacing:-.02em}.mobile-menu-toggle{display:none;background:0 0;border:none;cursor:pointer;padding:.5rem}.mobile-menu-toggle .bar{display:block;width:26px;height:2px;background:var(--text-dark);margin:5px 0;transition:var(--transition);border-radius:2px}.nav-menu{display:flex;gap:2rem;list-style:none}.nav-menu a{color:var(--text-soft);font-weight:500;padding:.5rem 0;border-bottom:2px solid transparent;transition:var(--transition)}.nav-menu a:hover,.nav-menu a[aria-current=page]{color:var(--primary);border-bottom-color:var(--primary)}main{max-width:1280px;margin:2rem auto;padding:0 2rem}.hero-section{text-align:center;padding:3rem 1rem;background:linear-gradient(145deg,#fff,var(--primary-light));border-radius:var(--radius-md);margin-bottom:3rem;box-shadow:var(--card-shadow)}.hero-section h1{font-size:clamp(2.2rem, 6vw, 3.2rem);font-weight:800;color:var(--text-dark);line-height:1.2;max-width:900px;margin:0 auto 1.5rem}.hero-section .subhead{font-size:1.25rem;color:var(--text-soft);max-width:700px;margin:0 auto}.filter-bar{margin-bottom:2.5rem}.filter-title{font-size:1.2rem;font-weight:600;margin-bottom:1rem;color:var(--text-dark)}.filter-buttons{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center}.filter-btn{padding:.6rem 1.4rem;border-radius:40px;border:1px solid var(--border-light);background:#fff;color:var(--text-soft);font-weight:500;cursor:pointer;transition:var(--transition);font-size:.95rem}.filter-btn:hover{border-color:var(--primary);color:var(--primary)}.filter-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.product-table-section{background:#fff;border-radius:var(--radius-md);padding:1.8rem;box-shadow:var(--card-shadow);margin-bottom:3rem}.product-table{width:100%;border-collapse:collapse;text-align:left}.product-table th{font-weight:600;color:var(--text-soft);padding:1rem .75rem .75rem .75rem;border-bottom:2px solid var(--border-light);font-size:.9rem;text-transform:uppercase;letter-spacing:.03em}.product-table td{padding:1rem .75rem;border-bottom:1px solid var(--border-light);color:var(--text-dark)}.product-title small{display:block;font-weight:400;color:var(--text-soft);max-width:830px;margin-top:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.product-table tr:last-child td{border-bottom:none}.product-table .product-title{font-weight:600}.product-table .stock{color:#10b981;font-weight:500}.product-table .price{font-weight:700;color:var(--primary);font-size:1.1rem}.product-table .buy-link a{background:var(--primary-light);padding:.3rem 1rem;border-radius:40px;font-size:.9rem;border:1px solid transparent;transition:var(--transition);display:inline-block}.product-table .buy-link a:hover{background:var(--primary);color:#fff}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:2rem;margin:3rem 0}.feature-card{background:#fff;padding:2rem 1.5rem;border-radius:var(--radius-md);box-shadow:var(--card-shadow);transition:var(--transition);text-align:center}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--hover-shadow)}.feature-icon{font-size:2.4rem;margin-bottom:1rem;display:inline-block;background:var(--primary-light);width:70px;height:70px;line-height:70px;border-radius:50%;color:var(--primary)}.feature-card h3{margin-bottom:.5rem;font-size:1.3rem}.feature-card p{color:var(--text-soft)}.faq-section{background:#fff;border-radius:var(--radius-md);padding:2rem;box-shadow:var(--card-shadow);margin:3rem 0}.faq-item{border-bottom:1px solid var(--border-light)}.faq-item:last-child{border-bottom:none}.faq-question{width:100%;text-align:left;padding:1.25rem 0;background:0 0;border:none;font-weight:600;font-size:1.1rem;color:var(--text-dark);cursor:pointer;display:flex;justify-content:space-between;align-items:center}.faq-question:hover{color:var(--primary)}.faq-question .arrow{font-size:1.2rem;transition:transform .2s}.faq-question[aria-expanded=true] .arrow{transform:rotate(180deg)}.faq-answer{padding:0 0 1.25rem 0;color:var(--text-soft);line-height:1.7;display:none}.faq-answer.show{display:block}.site-footer{text-align:center;padding:2rem;border-top:1px solid var(--border-light);color:var(--text-soft);font-size:.9rem;margin-top:3rem}@media (max-width:1024px){.product-title small{max-width:580px}}@media (max-width:768px){.header-container{padding:.8rem 1.5rem}.mobile-menu-toggle{display:block}.main-navigation{display:none;position:absolute;top:100%;left:0;width:100%;background:#fff;padding:1rem 2rem;box-shadow:0 10px 20px rgba(0,0,0,.05);border-top:1px solid var(--border-light)}.main-navigation.active{display:block}.nav-menu{flex-direction:column;gap:1rem}.filter-buttons{gap:.5rem}.filter-btn{padding:.5rem 1rem;font-size:.85rem}.product-table-section{box-shadow:unset;background:unset;border-radius:0;padding:0}.product-table thead{display:none}.product-table,.product-table tbody,.product-table td,.product-table tr{display:block;width:100%!important;min-width:auto!important}.product-table tr{background:#fff;margin-bottom:20px;position:relative;border-radius:28px;overflow:hidden}.product-table td{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;border-radius:0!important;box-shadow:none;border-bottom:1px solid #f0f2f5}.product-table td:first-child::before{content:'';width:0}.product-title small{display:none}.product-table td::before{content:attr(data-label);font-weight:600;color:#64748b;width:40%;font-size:.9rem}.product-table td:last-child{border-bottom:0}.hero-section{padding:2rem 1rem}}@media (max-width:480px){main{padding:0 1rem}}:root{--primary:#2A6DF4;--primary-light:#eef4ff;--primary-dark:#1a4fc4;--secondary:#f97316;--secondary-light:#fff4e6;--text-dark:#1a1f36;--text-soft:#4a5568;--text-light:#718096;--bg-light:#f9fafc;--bg-white:#ffffff;--border-light:#e2e8f0;--border-color:#e2e8f0;--success-green:#10b981;--success-light:#e6f7ed;--price-red:#ef4444;--price-light:#fee2e2;--warning-bg:#fef3c7;--warning-text:#92400e;--shadow:0 8px 20px rgba(0, 0, 0, 0.02),0 2px 6px rgba(0, 0, 0, 0.03);--shadow-hover:0 12px 30px rgba(42, 109, 244, 0.08);--shadow-lg:rgba(145, 158, 171, 0.2) 0px 0px 2px 0px,rgba(145, 158, 171, 0.12) 0px 12px 24px -4px;--radius-sm:6px;--radius-md:12px;--radius-lg:16px;--transition:all 0.2s ease;--bs-card-spacer-y:24px;--bs-card-spacer-x:24px;--bs-card-title-spacer-y:0.5rem;--bs-card-title-color:#1a1f36;--bs-card-subtitle-color:#4a5568;--bs-card-border-width:0px;--bs-card-border-color:#e2e8f0;--bs-card-border-radius:12px;--bs-card-box-shadow:0 8px 20px rgba(0, 0, 0, 0.02),0 2px 6px rgba(0, 0, 0, 0.03);--bs-card-inner-border-radius:12px;--bs-card-cap-padding-y:15px;--bs-card-cap-padding-x:24px;--bs-card-cap-bg:rgba(42, 109, 244, 0.02);--bs-card-bg:#ffffff;--bs-card-img-overlay-padding:1rem;--bs-card-group-margin:12px}.breadcrumb{margin:24px 0;font-size:.95rem;color:var(--text-soft);max-width:1280px;margin-left:auto;margin-right:auto}.breadcrumb a{color:var(--primary);text-decoration:none;transition:var(--transition);font-weight:500}.breadcrumb a:hover{color:var(--primary-dark);text-decoration:underline}.breadcrumb span{margin:0 8px;color:var(--text-light)}.container{max-width:1280px;margin:0 auto;padding:0 20px}.product-d-detail{background:var(--bg-white);border-radius:var(--radius-lg);padding:var(--bs-card-spacer-y) var(--bs-card-spacer-x);box-shadow:var(--shadow-lg);border:1px solid var(--border-light);margin-bottom:40px;display:grid;grid-template-columns:1fr 1fr;gap:40px}.product-d-info,.purchase-options{border:none}.product-d-title{font-size:2rem;font-weight:700;margin-bottom:16px;color:var(--text-dark);line-height:1.3}.product-d-price{font-size:2.4rem;font-weight:700;color:var(--price-red);margin-bottom:24px;display:flex;align-items:center;gap:8px}.product-d-price::before{content:'$';font-size:1.6rem;color:var(--text-light);font-weight:400}.product-d-specs{margin-bottom:24px;background:var(--bg-light);border-radius:var(--radius-md);padding:16px}.spec-row{display:flex;padding:10px 0;border-bottom:1px solid var(--border-light)}.spec-row:last-child{border-bottom:none}.spec-label{flex:0 0 140px;color:var(--text-soft);font-weight:500;display:flex;align-items:center;gap:8px}.spec-label i{color:var(--primary);width:18px}.spec-value{flex:1;font-weight:600;color:var(--text-dark)}.spec-value.highlight{color:var(--success-green)}.option-title{font-size:1.4rem;font-weight:600;margin-bottom:24px;color:var(--text-dark);display:flex;align-items:center;gap:10px}.option-title i{color:var(--primary)}.form-group{margin-bottom:24px}.form-label{display:block;margin-bottom:8px;color:var(--text-soft);font-weight:500;font-size:.95rem}.required{color:var(--price-red)}.email-input{width:100%;padding:12px 16px;border:1px solid var(--border-light);border-radius:var(--radius-sm);font-size:1rem;transition:var(--transition);background:var(--bg-white)}.email-input:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(42,109,244,.1)}.email-hint{margin-top:8px;font-size:.85rem;color:var(--text-light);display:flex;align-items:center;gap:5px}.email-hint i{color:var(--primary)}.quantity-selector{display:flex;align-items:center;background:var(--bg-white);border-radius:var(--radius-sm);border:1px solid var(--border-light);overflow:hidden;transition:var(--transition);max-width:150px}.quantity-selector:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(42,109,244,.1)}.quantity-btn{width:42px;height:42px;line-height:42px;border:none;background:var(--primary-light);color:var(--primary);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;transition:var(--transition)}.quantity-btn:hover{background:var(--primary);color:#fff}.quantity-btn:disabled{opacity:.5;cursor:not-allowed;background:var(--border-light);color:var(--text-light)}.quantity-input{flex:1;height:42px;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:24px}.payment-label{font-size:.95rem;color:var(--text-dark);margin-bottom:12px;font-weight:600}.payment-methods{display:flex;gap:10px;flex-wrap:wrap}.payment-method{flex:1;min-width:120px;padding:16px 8px;border:1px solid var(--border-light);border-radius:var(--radius-md);background:var(--bg-white);cursor:pointer;transition:var(--transition);text-align:center;font-size:.85rem;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(--primary-light);transform:translateY(-2px);box-shadow:var(--shadow-hover)}.payment-method input[type=radio]{display:none}.payment-icon{margin-bottom:4px}.payment-icon img{border-radius:12px;width:48px;height:48px;object-fit:contain}.payment-text{color:var(--text-dark);font-size:.9rem}.total-price{background:var(--primary-light);padding:18px 20px;border-radius:var(--radius-md);margin-bottom:24px;display:flex;justify-content:space-between;align-items:center;border:1px solid var(--border-light)}.total-label{font-size:1rem;color:var(--text-dark);font-weight:500;display:flex;align-items:center;gap:8px}.total-label i{color:var(--primary)}.total-amount{font-size:2rem;font-weight:700;color:var(--primary)}.action-buttons{display:flex;gap:15px}.btn{padding:14px 24px;border:none;border-radius:var(--radius-sm);font-size:1rem;cursor:pointer;transition:var(--transition);font-weight:600;flex:1;text-align:center;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.product-d-description{grid-column:1/-1;margin-top:20px;border-top:1px solid var(--border-light);padding-top:30px}.description-d-title{font-size:1.6rem;font-weight:700;margin-bottom:24px;color:var(--text-dark);display:flex;align-items:center;gap:12px}.description-d-title i{color:var(--primary)}.description-d-content{line-height:1.8;color:var(--text-soft)}.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:30px 0 15px;font-weight:600;display:flex;align-items:center;gap:10px}.description-d-content strong{color:var(--text-dark)}.related-products{margin:60px 0}.section-title{font-size:2rem;font-weight:700;margin-bottom:16px;text-align:center;color:var(--text-dark);display:flex;align-items:center;justify-content:center;gap:12px}.section-title i{color:var(--primary)}.section-subtitle{font-size:1.1rem;color:var(--text-soft);text-align:center;margin-bottom:40px;max-width:600px;margin-left:auto;margin-right:auto}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.ks-product-card{background:var(--bg-white);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-lg);transition:var(--transition);border:1px solid var(--border-light);display:flex;flex-direction:column}.ks-product-card:hover{box-shadow:var(--shadow-hover);border-color:var(--primary-light)}.ks-product-card-title{font-size:1.25rem;font-weight:600;margin-bottom:12px;color:var(--text-dark);flex-grow:0;display:flex;align-items:center;gap:8px}.ks-product-card-description{color:var(--text-soft);margin-bottom:16px;font-size:.95rem;line-height:1.6;flex-grow:1}.ks-product-card-price{color:var(--price-red);font-weight:700;font-size:1.5rem;margin-bottom:16px;flex-grow:0;display:flex;align-items:center;gap:4px}.ks-product-card-price::before{content:'$';font-size:1rem;color:var(--text-light);font-weight:400}.ks-product-card-action{flex-grow:0}.ks-product-card-action .btn-primary{width:100%;padding:12px}@media (max-width:1024px){.product-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.breadcrumb{margin:16px 0;padding:0 16px}.container{padding:0 16px}.product-d-detail{grid-template-columns:1fr;gap:24px;padding:20px}.product-d-title{font-size:1.6rem}.product-d-price{font-size:2rem}.action-buttons{flex-direction:column}.payment-methods{display:grid;grid-template-columns:repeat(2,1fr)}.payment-method{min-width:auto;padding:12px 4px}.product-grid{grid-template-columns:1fr}.section-title{font-size:1.6rem}.spec-label{flex:0 0 120px}}@media (max-width:480px){.product-d-detail{padding:16px}.product-d-title{font-size:1.4rem}.product-d-price{font-size:1.8rem}.product-d-price::before{font-size:1.2rem}.spec-label{flex:0 0 100px;font-size:.85rem}.spec-value{font-size:.85rem}.description-d-title{font-size:1.3rem}.total-amount{font-size:1.6rem}.payment-methods{grid-template-columns:repeat(2,1fr)}.payment-method{justify-content:flex-start;padding:12px}.payment-icon{margin-bottom: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: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(--success-green);padding:15px;border-radius:10px;display:flex;align-items:center;gap:15px;margin-bottom:20px}.selected-payment .payment-icon{font-size:2rem;color:var(--success-green)}.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(--success-green);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(--success-green),#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:var(--bg-white);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:var(--success-green);color:#fff}.toast.error{background:var(--price-red);color:#fff}.toast.warning{background:var(--warning-bg);color:var(--warning-text)}.toast.info{background:var(--primary-light);color:var(--primary-dark)}.toast-icon{margin-right:12px;flex-shrink:0}.toast-content{flex:1}.toast-title{font-weight:600;font-size:14px;margin-bottom:2px}.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:currentColor;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}@keyframes progress{0%{transform:scaleX(1)}to{transform:scaleX(0)}}@media (max-width:768px){.modal-body{grid-template-columns:1fr;gap:20px}}@media (max-width:480px){.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}}