:root{--primary:#ff6a00;--primary-dark:#ee3c1b;--gradient:linear-gradient(98deg, #ff6a00, #ee3c1b);--dark:#0a2540;--gray-dark:#1e2a3e;--text-secondary:#4a627a;--text-light:#5b6f88;--bg-white:#ffffff;--bg-light:#f5f7fc;--bg-alt:#f8fafd;--bg-soft:#f0f7ff;--border:#eef2f6;--border-deep:#d0d8e5;--border-light:#e4ecf5;--shadow-sm:0 4px 14px rgba(0, 0, 0, 0.04);--shadow-md:0 10px 25px -5px rgba(0, 0, 0, 0.05);--radius-card:24px;--radius-btn:40px;--max-width:1440px;--padding-x:48px}.gradient-text{background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent}*{margin:0;padding:0;box-sizing:border-box}a{text-decoration:none}body{font-family:'PingFang SC',Roboto,'Helvetica Neue',Helvetica,Arial,sans-serif;color:var(--dark);background:var(--bg-white);line-height:1.5;scroll-behavior:smooth}.container{max-width:var(--max-width);margin:0 auto;padding:0 var(--padding-x)}@media (max-width:768px){:root{--padding-x:24px}.container{padding:0 var(--padding-x)}}h1{font-size:48px;font-weight:800;line-height:1.2;letter-spacing:-.02em}@media (max-width:768px){h1{font-size:36px}}h2{font-size:36px;font-weight:700;margin-bottom:16px;color:var(--dark)}@media (max-width:768px){h2{font-size:28px}}h3{font-size:24px;font-weight:600;margin-bottom:12px}.section{padding:80px 0;border-bottom:1px solid var(--border)}.section:last-child{border-bottom:none}.section-bg-light{background:var(--bg-light)}.section-bg-alt{background:var(--bg-alt)}.btn{display:inline-block;padding:14px 32px;border-radius:var(--radius-btn);font-weight:500;transition:all .2s ease;cursor:pointer;border:none;font-size:16px}.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 8px 18px rgba(238,60,27,.25)}.btn-primary:hover{box-shadow:0 12px 24px rgba(238,60,27,.3)}.btn-secondary{background:#fff;border:1px solid var(--border-deep);color:var(--dark)}.btn-secondary:hover{border-color:var(--primary);color:var(--primary)}.site-header{position:sticky;top:0;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);z-index:1000;border-bottom:1px solid var(--border);padding:16px 0}.header-container{display:flex;justify-content:space-between;align-items:center}.logo a{font-size:26px;font-weight:800;color:var(--dark)}.nav-list{display:flex;gap:32px;list-style:none}.nav-link{color:var(--text-secondary);font-weight:500;transition:color .2s}.nav-link:hover{color:var(--primary)}.mobile-menu-toggle{display:none;flex-direction:column;gap:6px;background:0 0;border:none;cursor:pointer}.bar{width:28px;height:2px;background:var(--dark);border-radius:2px}@media (max-width:992px){.nav-list{gap:20px}.mobile-menu-toggle{display:flex}.main-nav{position:fixed;top:80px;left:-100%;width:100%;height:calc(100vh - 80px);background:#fff;transition:left 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.price{font-weight:700;color:var(--primary);font-size:20px}.product-table .buy-link{background:var(--gradient);color:#fff;padding:8px 20px;border-radius:40px;font-weight:500;display:inline-block}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}@media (max-width:768px){.grid-2{grid-template-columns:1fr}}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}@media (max-width:992px){.grid-3{grid-template-columns:repeat(2,1fr)}}@media (max-width:576px){.grid-3{grid-template-columns:1fr}}.card{background:#fff;border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:transform .2s}.card:hover{box-shadow:var(--shadow-md)}.step-number{width:48px;height:48px;background:var(--gradient);border-radius:60px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:24px;margin-bottom:20px}.badge{background:var(--bg-soft);color:var(--primary);padding:6px 14px;border-radius:40px;font-size:14px;font-weight:500}.faq-item{border-bottom:1px solid var(--border);margin-bottom:16px}.faq-question{display:flex;justify-content:space-between;align-items:center;padding:20px 0;cursor:pointer;font-weight:600;font-size:18px}.faq-question:hover{color:var(--primary)}.faq-icon{font-size:28px;color:var(--primary);transition:transform .2s}.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0;color:var(--text-secondary)}.faq-item.active .faq-answer{padding-bottom:20px;max-height:300px}.faq-item.active .faq-icon{transform:rotate(45deg)}.testimonial-card{background:var(--bg-light);padding:28px;border-radius:20px;font-style:normal}.testimonial-text{font-size:16px;color:var(--text-secondary);margin-bottom:16px;line-height:1.6}.testimonial-author{font-weight:700;color:var(--dark)}.site-footer{background:var(--dark);color:#fff;padding:32px 0;text-align:center;font-size:14px}.site-footer a{color:#fff}@media (max-width:768px){.product-table{display:block;overflow-x:auto}}.stock-badge{color:var(--text-secondary);font-size:14px}:root{--primary-orange:#ff6a00;--primary-dark:#ee3c1b;--primary-gradient:linear-gradient(98deg, #ff6a00, #ee3c1b);--hover-orange:#e55a00;--light-orange:#fff5eb;--bg-color:#f5f7fc;--card-bg:#ffffff;--text-primary:#0a2540;--text-secondary:#4a627a;--text-light:#5b6f88;--border-color:#eef2f6;--border-deep:#d0d8e5;--price-red:#ee3c1b;--success-green:#22c55e;--transition:all 0.3s ease;--card-radius:24px;--btn-radius:40px;--shadow:0 4px 14px rgba(0, 0, 0, 0.04);--shadow-hover:0 10px 25px -5px rgba(0, 0, 0, 0.08);--bs-card-spacer-y:30px;--bs-card-spacer-x:30px;--bs-card-title-spacer-y:0.5rem;--bs-card-title-color:#0a2540;--bs-card-subtitle-color:#4a627a;--bs-card-border-width:1px;--bs-card-border-color:#eef2f6;--bs-card-border-radius:24px;--bs-card-box-shadow:0 4px 14px rgba(0, 0, 0, 0.04);--bs-card-inner-border-radius:24px;--bs-card-cap-padding-y:15px;--bs-card-cap-padding-x:30px;--bs-card-cap-bg:rgba(90, 106, 133, 0.03);--bs-card-bg:#ffffff;--bs-card-img-overlay-padding:1rem;--bs-card-group-margin:12px}*{margin:0;padding:0;box-sizing:border-box}.container{max-width:1440px;margin:0 auto;padding:0 48px}@media (max-width:768px){.container{padding:0 24px}}.breadcrumb{margin:30px 0;font-size:.9rem;color:var(--text-secondary)}.breadcrumb a{color:var(--primary-orange);transition:var(--transition)}.breadcrumb a:hover{text-decoration:underline;color:var(--primary-dark)}.breadcrumb span{margin:0 8px}.product-d-detail{background:var(--card-bg);border-radius:var(--card-radius);padding:var(--bs-card-spacer-y) var(--bs-card-spacer-x);box-shadow:var(--shadow);border:1px solid var(--border-color);margin-bottom:80px;display:grid;grid-template-columns:1fr 1fr;gap:48px;transition:var(--transition)}.product-d-detail:hover{box-shadow:var(--shadow-hover)}.product-d-info,.purchase-options{border:none}.product-d-title{font-size:2rem;font-weight:800;margin-bottom:20px;color:var(--text-primary);letter-spacing:-.02em}.product-d-price{font-size:2.5rem;font-weight:700;color:var(--price-red);margin-bottom:30px;background:var(--primary-gradient);-webkit-background-clip:text;background-clip:text;color:transparent;display:inline-block}.product-d-specs{margin-bottom:25px}.spec-row{display:flex;padding:14px 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:500;display:flex;align-items:center;gap:8px}.spec-value{flex:1;font-weight:600;color:var(--text-primary)}.spec-value.highlight{color:var(--success-green)}.option-title{font-size:1.5rem;font-weight:700;margin-bottom:30px;color:var(--text-primary);letter-spacing:-.01em}.form-group{margin-bottom:28px}.form-label{display:block;margin-bottom:10px;color:var(--text-secondary);font-weight:500;font-size:.95rem}.required{color:var(--price-red)}.email-input{width:100%;padding:14px 18px;border:1px solid var(--border-color);border-radius:var(--btn-radius);font-size:1rem;transition:var(--transition);font-family:inherit}.email-input:focus{outline:0;border-color:var(--primary-orange);box-shadow:0 0 0 3px rgba(255,106,0,.08)}.email-hint{margin-top:8px;font-size:.85rem;color:var(--text-secondary);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-color);overflow:hidden;transition:var(--transition);max-width:160px}.quantity-selector:focus-within{border-color:var(--primary-orange);box-shadow:0 0 0 3px rgba(255,106,0,.08)}.quantity-btn{width:44px;height:44px;line-height:44px;border:none;background:var(--light-orange);color:var(--text-primary);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;transition:var(--transition)}.quantity-btn:hover{background:rgba(255,106,0,.1)}.quantity-btn:disabled{opacity:.5;cursor:not-allowed}.quantity-input{flex:1;height:44px;text-align:center;border:none;background:0 0;font-size:1rem;font-weight:600;color:var(--text-primary);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:25px}.payment-label{font-size:.95rem;color:var(--text-primary);margin-bottom:8px;font-weight:600}.payment-methods{display:flex;gap:12px;flex-wrap:wrap}.payment-method{flex:1;min-width:120px;padding:14px 8px;border:1px solid var(--border-color);border-radius:16px;background:#fff;cursor:pointer;transition:var(--transition);text-align:center;font-size:.85rem;font-weight:500}.payment-method.selected,.payment-method:hover{border-color:var(--primary-orange);background:var(--light-orange);box-shadow:0 2px 8px rgba(255,106,0,.1)}.payment-method input[type=radio]{display:none}.payment-icon{margin-bottom:8px}.payment-icon>img{border-radius:12px}.total-price{background:linear-gradient(135deg,var(--light-orange),#fff0e6);padding:18px 20px;border-radius:20px;margin-bottom:28px;display:flex;justify-content:space-between;align-items:center}.total-label{font-size:1rem;color:var(--text-secondary);font-weight:500}.total-amount{font-size:1.8rem;font-weight:800;background:var(--primary-gradient);-webkit-background-clip:text;background-clip:text;color:transparent}.action-buttons{display:flex;gap:15px}.btn{padding:15px 32px;border:none;border-radius:var(--btn-radius);font-size:1rem;cursor:pointer;transition:var(--transition);font-weight:600;flex:1;text-align:center;display:inline-block;font-family:inherit}.btn-primary{background:var(--primary-gradient);color:#fff;box-shadow:0 8px 18px rgba(238,60,27,.25)}.btn-primary:hover{box-shadow:0 12px 24px 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strong{color:var(--text-primary)}.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(255,106,0,.05);border-radius:16px}.feature-icon{color:var(--success-green);font-size:1.2rem}.security-notice{background:linear-gradient(135deg,#eef2ff,#f9fbfe);padding:20px;border-radius:20px;margin-top:30px;display:flex;align-items:center;gap:15px;border:1px solid var(--border-color)}.security-icon{font-size:1.5rem;color:var(--primary-orange)}.security-text{flex:1;color:var(--text-secondary);font-size:.95rem;line-height:1.6}.related-products{margin-bottom:80px}.section-title{font-size:2rem;font-weight:800;margin-bottom:20px;text-align:center;color:var(--text-primary);letter-spacing:-.02em}.section-subtitle{font-size:1.1rem;color:var(--text-secondary);text-align:center;margin-bottom:48px;max-width:600px;margin-left:auto;margin-right:auto}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.ks-product-card{background:var(--card-bg);border-radius:20px;padding:28px;box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border-color);display:flex;flex-direction:column}.ks-product-card:hover{box-shadow:var(--shadow-hover)}.ks-product-card-title{font-size:1.25rem;font-weight:700;margin-bottom:15px;color:var(--text-primary);flex-grow:0;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{font-weight:700;font-size:1.5rem;margin-bottom:20px;flex-grow:0;background:var(--primary-gradient);-webkit-background-clip:text;background-clip:text;color:transparent;display:inline-block}.ks-product-card-action .btn-primary{padding:12px 24px;font-size:.9rem;display:inline-block;width:100%;text-align:center}.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:28px;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:28px 32px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between}.modal-title{font-weight:700;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:32px;display:grid;grid-template-columns:repeat(2,1fr);gap:32px}.order-summary{background:linear-gradient(135deg,#f8f9fa,#e9ecef);padding:25px;border-radius:20px}.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,.summary-value.total::after{font-size:24px;background:var(--primary-gradient);-webkit-background-clip:text;background-clip:text;color:transparent}.summary-value.total::after{font-size:18px;content:' USDT'}.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:var(--primary-gradient);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;box-shadow:0 8px 18px rgba(238,60,27,.25)}.btn-confirm:hover:not(:disabled){box-shadow:0 12px 24px rgba(238,60,27,.3)}.btn-confirm:disabled{opacity:.6;cursor:not-allowed}.countdown-section{background:linear-gradient(135deg,#fff5eb,#fee2d6);padding:20px;border-radius:20px;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;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: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:32px;padding:24px;margin-bottom:60px}.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;padding:24px}.product-grid{grid-template-columns:1fr;gap:24px}.section-title{font-size:1.75rem}.product-table{background:0 0}.product-table thead{display:none}.product-table,.product-table tbody,.product-table td,.product-table tr{display:block;width:100%}.product-table tr{margin-bottom:20px;position:relative;border-radius:28px;background:#fff;overflow:hidden}.product-table td{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;border-radius:0!important;box-shadow:none}.product-table td:first-child::before{content:'';width:0}.product-table td::before{content:attr(data-label);font-weight:600;color:#64748b;width:40%;font-size:.9rem}.product-table td:first-child>small{display:none}.product-table td:last-child{border-bottom:none}}@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}.address-value{font-size:12px}}