*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;line-height:1.6;color:#333;background:#f8fafc}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 15px}.site-header{background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.05);position:sticky;top:0;z-index:100}.header-container{display:flex;justify-content:space-between;align-items:center;height:70px}.logo a{display:flex;align-items:center;gap:8px;text-decoration:none;font-size:1.3rem;font-weight:600;color:#2d3e50}.logo img{width:32px;height:auto}.main-nav ul{display:flex;list-style:none;gap:30px}.main-nav a{text-decoration:none;color:#4a5568;font-weight:500;transition:color .2s}.main-nav a:hover{color:#5463c6}.hamburger{display:none;flex-direction:column;cursor:pointer;background:0;border:0}.hamburger span{width:25px;height:3px;background:#2d3e50;margin:3px 0;transition:.3s;border-radius:3px}.hero-section{background:linear-gradient(135deg,#f5f7ff 0,#fff 100%);padding:60px 0;border-bottom:1px solid #eef2f6}.hero-content{max-width:800px;margin:0 auto;text-align:center}.hero-content h1{font-size:2.5rem;color:#1a2634;margin-bottom:20px;font-weight:700;line-height:1.2}.hero-content p{font-size:1.2rem;color:#4a5568;margin-bottom:0}.filter-section{padding:40px 0;background:#fff}.filter-section h2{text-align:center;margin-bottom:30px;color:#2d3748;font-size:2rem}.filter-btns{display:flex;flex-wrap:wrap;justify-content:center;gap:15px;margin-bottom:30px}.filter-btn{padding:12px 28px;border:1px solid #e2e8f0;background:#fff;border-radius:50px;font-size:1rem;font-weight:600;color:#4a5568;cursor:pointer;transition:.2s;box-shadow:0 2px 5px rgba(0,0,0,.02)}.filter-btn.active,.filter-btn:hover{background:#5463c6;border-color:#5463c6;color:#fff;box-shadow:0 4px 12px rgba(84,99,198,.2)}.product-table-section{padding:20px 0 60px}.product-table-container{background:#fff;border-radius:20px;box-shadow:0 10px 30px rgba(0,0,0,.03);overflow-x:auto}.product-table{width:100%;border-collapse:collapse;min-width:650px}.product-table thead{background:#f7fafd}.product-table th{padding:20px 15px;text-align:left;font-weight:600;color:#2d3748;font-size:1rem;border-bottom:2px solid #e2e8f0}.product-table td{padding:18px 15px;border-bottom:1px solid #edf2f7;color:#2d3748}.product-table td:first-child>small{display:inline-block;max-width:840px;color:#8d8d8d;font-weight:400;margin-top:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.product-table tbody tr:hover{background:#f9f9ff}.product-title{font-weight:600;color:#1a202c}.product-stock{color:#059669;font-weight:500;background:#e6f7f0;padding:5px 10px;border-radius:50px;display:inline-block;font-size:.9rem}.product-price{font-weight:700;color:#2d3748;font-size:1.2rem}.product-price small{font-size:.9rem;margin-right:1px}.buy-link{background:#5463c6;color:#fff;padding:8px 20px;border-radius:50px;text-decoration:none;font-weight:500;font-size:.9rem;transition:.2s;display:inline-block;border:1px solid #5463c6}.buy-link:hover{background:#fff;color:#5463c6}.why-choose-us{padding:70px 0;background:#fff}.section-title{text-align:center;font-size:2.2rem;color:#1e293b;margin-bottom:50px}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px}.feature-card{background:#f8fafc;padding:40px 20px;border-radius:20px;text-align:center;transition:.3s;border:1px solid #eef2f6}.feature-card:hover{transform:translateY(-8px);box-shadow:0 20px 30px rgba(0,0,0,.05);border-color:#5463c6}.feature-icon{font-size:3rem;margin-bottom:20px;display:block}.feature-card h3{font-size:1.4rem;color:#1e293b;margin-bottom:15px}.feature-card p{color:#475569;line-height:1.6}.faq-section{padding:70px 0;background:#f8fafc}.faq-grid{max-width:800px;margin:0 auto}.faq-item{background:#fff;border-radius:16px;margin-bottom:15px;padding:0;box-shadow:0 5px 15px rgba(0,0,0,.02);border:1px solid #eef2f6}.faq-question{display:flex;justify-content:space-between;align-items:center;padding:20px 25px;cursor:pointer;font-weight:600;color:#1e293b;font-size:1.1rem;transition:.2s}.faq-question:hover{color:#5463c6}.faq-question .arrow{font-size:1.5rem;line-height:1;transition:transform .3s;color:#94a3b8}.faq-item.active .faq-question .arrow{transform:rotate(45deg)}.faq-answer{padding:0 25px 20px;color:#475569;line-height:1.7;display:none}.faq-item.active .faq-answer{display:block}.site-footer{background:#1e293b;color:#cbd5e1;padding:30px 0;text-align:center;border-top:1px solid #334155}.footer-copyright{font-size:.95rem}@media (max-width:768px){.hamburger{display:flex}.main-nav{position:fixed;top:70px;left:0;width:100%;background:#fff;box-shadow:0 10px 15px rgba(0,0,0,.1);max-height:0;overflow:hidden;transition:max-height .3s ease-out;z-index:99}.main-nav.active{max-height:300px}.main-nav ul{flex-direction:column;padding:20px;gap:15px}.hero-content h1{font-size:1.9rem}.hero-content p{font-size:1rem}.filter-btns{gap:10px}.product-table-container{box-shadow:unset;background:unset}.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-table td:first-child>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}}:root{--primary:#5463c6;--primary-light:#6f7cde;--primary-dark:#3a48a5;--secondary:#f97316;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--info:#3b82f6;--dark:#1e293b;--light:#f8fafc;--gray-100:#f1f5f9;--gray-200:#e2e8f0;--gray-300:#cbd5e1;--gray-400:#94a3b8;--gray-500:#64748b;--gray-600:#475569;--gray-700:#334155;--gray-800:#1e293b;--text-primary:#0f172a;--text-secondary:#475569;--bg-body:#f8fafc;--card-bg:#ffffff;--border-color:#e2e8f0;--shadow-sm:0 1px 3px rgba(0, 0, 0, 0.05);--shadow-md:0 4px 6px -1px rgba(0, 0, 0, 0.1);--shadow-lg:0 10px 15px -3px rgba(0, 0, 0, 0.1);--shadow-xl:0 20px 25px -5px rgba(0, 0, 0, 0.1);--transition:all 0.2s cubic-bezier(0.4, 0, 0.2, 1);--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}.breadcrumb{margin:30px 0;font-size:.95rem;color:var(--gray-500)}.breadcrumb a{color:var(--primary);text-decoration:none;font-weight:500;transition:var(--transition)}.breadcrumb a:hover{color:var(--primary-dark)}.breadcrumb span{margin:0 10px;color:var(--gray-400)}.product-d-detail{background:var(--card-bg);border-radius:var(--radius-xl);padding:35px;box-shadow:var(--shadow-lg);border:1px solid var(--border-color);margin-bottom:50px;display:grid;grid-template-columns:1fr 1fr;gap:40px}.product-d-title{font-size:2.2rem;font-weight:700;margin-bottom:20px;color:var(--text-primary);line-height:1.3}.product-d-price{font-size:2.5rem;font-weight:700;color:var(--primary);margin-bottom:30px}.product-d-price::before{content:'$';font-size:1.4rem;color:var(--primary-light)}.product-d-specs{background:var(--light);border-radius:var(--radius-lg);padding:5px 0;border:1px solid var(--border-color)}.spec-row{display:flex;padding:16px 20px;border-bottom:1px solid var(--border-color)}.spec-row:last-child{border-bottom:none}.spec-label{flex:0 0 140px;color:var(--gray-600);font-weight:500;display:flex;align-items:center;gap:10px}.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)}.option-title{font-size:1.4rem;font-weight:600;margin-bottom:25px;color:var(--text-primary);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(--gray-700);font-weight:600;font-size:.95rem}.required{color:var(--danger)}.email-input{width:100%;padding:14px 18px;border:2px solid var(--border-color);border-radius:var(--radius-md);font-size:1rem;transition:var(--transition);background:var(--light)}.email-input:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 4px rgba(84,99,198,.1)}.email-hint{margin-top:10px;font-size:.9rem;color:var(--gray-500);display:flex;align-items:center;gap:6px}.quantity-selector{display:flex;align-items:center;background:var(--light);border-radius:var(--radius-md);border:2px solid var(--border-color);overflow:hidden;transition:var(--transition);max-width:160px}.quantity-selector:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(84,99,198,.1)}.quantity-btn{width:45px;height:45px;border:none;background:var(--gray-200);color:var(--text-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(--gray-300)}.quantity-input{flex:1;height:45px;text-align:center;border:none;background:0 0;font-size:1rem;font-weight:600;color:var(--text-primary);outline:0;min-width:70px}.payment-section{margin-bottom:25px}.payment-label{font-size:1rem;color:var(--text-primary);margin-bottom:12px;font-weight:600}.payment-methods{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.payment-method{padding:15px 10px;border:2px solid var(--border-color);border-radius:var(--radius-md);background:#fff;cursor:pointer;transition:var(--transition);text-align:center}.payment-method.selected,.payment-method:hover{border-color:var(--primary);background:linear-gradient(135deg,#f5f7ff 0,#fff 100%)}.payment-icon{margin-bottom:8px}.payment-icon img{width:48px;height:48px;border-radius:12px;transition:var(--transition)}.payment-text{font-size:.9rem;font-weight:600;color:var(--text-secondary)}.payment-method.selected .payment-text{color:var(--primary)}.total-price{background:linear-gradient(135deg,#f5f7ff 0,#eef2ff 100%);padding:18px 22px;border-radius:var(--radius-lg);margin-bottom:30px;display:flex;justify-content:space-between;align-items:center;border:1px solid rgba(84,99,198,.2)}.total-label{font-size:1.1rem;color:var(--primary-dark);font-weight:600;display:flex;align-items:center;gap:8px}.total-amount{font-size:2rem;font-weight:700;color:var(--primary-dark)}.action-buttons{display:flex;gap:15px}.btn{padding:16px 28px;border:none;border-radius:var(--radius-md);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:10px}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 4px 12px rgba(84,99,198,.3)}.btn-primary:hover{box-shadow:0 8px 20px rgba(84,99,198,.4)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-secondary{background:var(--gray-200);color:var(--text-primary)}.btn-secondary:hover{background:var(--gray-300)}.product-d-description{grid-column:1/-1;margin-top:40px}.description-d-title{font-size:1.6rem;margin-bottom:25px;color:var(--text-primary);display:flex;align-items:center;gap:12px;border-bottom:2px solid var(--border-color);padding-bottom:15px}.description-d-title i{color:var(--primary)}.description-d-content{line-height:1.8;color:var(--gray-600)}.description-d-content p{margin-bottom:20px;font-size:1.05rem}.description-d-content ol,.description-d-content ul{margin:20px 0;padding-left:25px}.description-d-content li{margin-bottom:10px}.description-d-content h3{font-size:1.3rem;color:var(--text-primary);margin:25px 0 15px;font-weight:600;display:flex;align-items:center;gap:10px}.description-d-content strong{color:var(--primary)}.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;margin:25px 0}.feature-item{display:flex;align-items:center;gap:12px;padding:18px;background:linear-gradient(135deg,var(--light) 0,#fff 100%);border-radius:var(--radius-lg);border:1px solid var(--border-color)}.feature-icon{color:var(--success);font-size:1.3rem}.security-notice{background:linear-gradient(135deg,#f5f7ff 0,#eef2ff 100%);padding:22px;border-radius:var(--radius-lg);margin-top:30px;display:flex;align-items:center;gap:18px;border:1px solid rgba(84,99,198,.2)}.security-icon{font-size:1.8rem;color:var(--primary)}.security-text{flex:1;color:var(--primary-dark);font-size:.98rem;line-height:1.7}.related-products{margin-bottom:80px}.section-title{font-size:2rem;font-weight:700;margin-bottom:15px;text-align:center;color:var(--text-primary);display:flex;align-items:center;justify-content:center;gap:12px}.section-title i{color:var(--primary)}.section-subtitle{font-size:1.1rem;color:var(--gray-500);text-align:center;margin-bottom:40px;max-width:700px;margin-left:auto;margin-right:auto}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.ks-product-card{background:var(--card-bg);border-radius:var(--radius-xl);padding:25px;box-shadow:var(--shadow-md);transition:var(--transition);border:1px solid var(--border-color);display:flex;flex-direction:column}.ks-product-card:hover{box-shadow:var(--shadow-xl);border-color:var(--primary)}.ks-product-card-title{font-size:1.2rem;font-weight:600;margin-bottom:12px;color:var(--text-primary);display:flex;align-items:center;gap:8px}.ks-product-card-description{color:var(--gray-500);margin-bottom:15px;font-size:.95rem;line-height:1.6;flex-grow:1}.ks-product-card-price{color:var(--primary);font-weight:700;font-size:1.4rem;margin-bottom:20px}.ks-product-card-price::before{content:'$';font-size:1rem;margin-right:2px;color:var(--primary-light)}.ks-product-card-action .btn{padding:12px 20px;font-size:.95rem}.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:#05a050;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.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:#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:25px;padding:25px}.feature-list{grid-template-columns:1fr}.action-buttons{flex-direction:column}.payment-methods{grid-template-columns:repeat(2,1fr)}.product-grid{grid-template-columns:1fr}.product-d-title{font-size:1.8rem}.product-d-price{font-size:2rem}.modal-body{grid-template-columns:1fr;gap:20px}}@media (max-width:480px){.product-d-detail{padding:20px}.spec-label{flex:0 0 110px;font-size:.9rem}.spec-value{font-size:.9rem}.description-d-title{font-size:1.4rem}.payment-methods{grid-template-columns:repeat(2,1fr)}.total-amount{font-size:1.6rem}.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}}