:root{--brand-orange:#ff6a00;--brand-red:#ff3b00;--dark-blue:#0a2540;--dark-slate:#1e2a3a;--text-gray:#4b5c6e;--light-gray:#f5f7fc;--border-light:#e9edf2;--orange-light:#fffaf5;--shadow-sm:0 12px 28px -8px rgba(0, 0, 0, 0.06);--shadow-md:0 6px 14px rgba(255, 106, 0, 0.25);--radius-card:28px;--radius-btn:48px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Segoe UI','PingFang SC',Roboto,'Helvetica Neue',system-ui,-apple-system,BlinkMacSystemFont,'Microsoft YaHei',sans-serif;color:var(--dark-slate);background:var(--light-gray);line-height:1.5;scroll-behavior:smooth}.navbar{background:#fff;border-bottom:1px solid var(--border-light);position:sticky;top:0;z-index:1000;backdrop-filter:blur(10px);background:rgba(255,255,255,.95)}.nav-container{max-width:1280px;margin:0 auto;padding:16px 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.2s}.faq-question{display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:18px}.faq-question i{transition:transform .3s;color:var(--brand-orange)}.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--text-gray);padding-top:0}.faq-item.active .faq-answer{max-height:300px;padding-top:16px}.faq-item.active .faq-question i{transform:rotate(180deg)}.reviews-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px}.review-card{background:#fff;padding:28px;border-radius:24px;box-shadow:var(--shadow-sm)}.review-text{font-style:italic;color:var(--text-gray);margin-bottom:20px;line-height:1.6}.review-author{font-weight:700;color:var(--dark-blue)}.review-stars{color:#ffbd2e;margin-bottom:12px}.footer{background:var(--dark-blue);color:#fff;text-align:center;padding:32px;margin-top:40px}.footer p{opacity:.8;font-size:14px}.footer a{color:#fff}@media (max-width:900px){.nav-menu{position:fixed;left:-100%;top:70px;flex-direction:column;background:#fff;width:100%;text-align:center;transition:.3s;box-shadow:0 10px 27px rgba(0,0,0,.05);padding:32px 0;gap:24px}.nav-menu.active{left:0}.mobile-menu-btn{display:block}.hero h1{font-size:36px}.section-title{font-size:32px}.section{padding:48px 0}.nav-container{padding:16px 20px}}@media (max-width:600px){.products-table td,.products-table th{padding:12px 16px}.product-price{font-size:22px}}:root{--brand-orange:#ff6a00;--brand-red:#ff3b00;--dark-blue:#0a2540;--dark-slate:#1e2a3a;--text-gray:#4b5c6e;--light-gray:#f5f7fc;--border-light:#e9edf2;--orange-light:#fffaf5;--shadow-sm:0 12px 28px -8px rgba(0, 0, 0, 0.06);--shadow-md:0 6px 14px rgba(255, 106, 0, 0.25);--radius-card:28px;--radius-btn:48px;--primary-blue:#ff6a00;--hover-blue:#e55a00;--light-blue:#fff5ed;--bg-color:#f8fafc;--card-bg:#ffffff;--text-primary:#1e2a3a;--text-secondary:#5a6a85;--border-color:#e9edf2;--price-red:#ff6a00;--success-green:#28c840;--transition:all 0.3s ease;--card-radius:28px;--btn-radius:48px;--shadow:0 12px 28px -8px rgba(0, 0, 0, 0.06);--shadow-hover:0 20px 40px -12px rgba(0, 0, 0, 0.1);--bs-card-spacer-y:30px;--bs-card-spacer-x:30px;--bs-card-title-spacer-y:0.5rem;--bs-card-title-color:#1e2a3a;--bs-card-subtitle-color:#5a6a85;--bs-card-border-width:0px;--bs-card-border-color:#e9edf2;--bs-card-border-radius:28px;--bs-card-box-shadow:0 12px 28px -8px rgba(0, 0, 0, 0.06);--bs-card-inner-border-radius:28px;--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}.breadcrumb{margin:30px 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i{color:var(--brand-orange)}.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:20px}.summary-title{font-size:18px;font-weight:700;color:var(--text-primary);margin-bottom:20px;gap:8px;display:flex;align-items:center}.summary-title i{color:var(--brand-orange)}.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(--brand-orange)}.summary-value.total::after{font-size:18px;content:' USDT'}.payment-title{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:15px;display:flex;align-items:center;gap:8px}.payment-title i{color:var(--brand-orange)}.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(95deg,#ff6a00,#ff3b00);color:#fff;padding:14px 28px;border:none;border-radius:48px;font-size:1rem;cursor:pointer;transition:var(--transition);font-weight:700;width:100%;display:flex;align-items:center;justify-content:center;gap:8px;box-shadow:0 6px 14px rgba(255,106,0,.25)}.btn-confirm:hover:not(:disabled){box-shadow:0 10px 20px rgba(255,106,0,.3)}.btn-confirm:disabled{opacity:.6;cursor:not-allowed}.countdown-section{background:linear-gradient(135deg,#fee2e2,#fecaca);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){.container{padding:0 16px}.breadcrumb{margin:20px 0}.product-d-detail{grid-template-columns:1fr;gap: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}.products-table-wrapper{background:0 0;border-radius:0;border:0;box-shadow:unset}.products-table thead{display:none}.products-table,.products-table tbody,.products-table td,.products-table tr{display:block;width:100%}.products-table tr{margin-bottom:20px;position:relative;border-radius:28px;background:#fff;overflow:hidden}.products-table td{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;border-radius:0!important;box-shadow:none}.products-table td:first-child::before{content:'';width:0}.products-table td::before{content:attr(data-label);font-weight:400;color:#64748b;width:40%;font-size:.9rem}.products-table td:first-child>small{display:none}.products-table td:last-child{border-bottom:none}.products-table tr:last-child td{border-bottom:1px solid var(--border-light)}}@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}}