:root{--wechat-green:#07c160;--dark-blue:#1f2d3d;--slate-gray:#4b5563;--pure-white:#ffffff;--light-gray:#f5f7fb;--bg-light:#f8fafd;--green-light:#e9f9ef;--border-light:#cbd5e1;--shadow-sm:0 10px 25px -5px rgba(0, 0, 0, 0.05),0 8px 10px -6px rgba(0, 0, 0, 0.02);--shadow-md:0 20px 25px -5px rgba(0, 0, 0, 0.08),0 8px 10px -6px rgba(0, 0, 0, 0.02);--shadow-hover:0 30px 40px -15px rgba(7, 193, 96, 0.15)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Segoe UI',Roboto,'Helvetica Neue','PingFang SC',sans-serif;color:var(--dark-blue);background:var(--pure-white);line-height:1.5;scroll-behavior:smooth}.container{max-width:1280px;margin:0 auto;padding:0 24px}section{padding:80px 0}.site-header{position:sticky;top:0;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);z-index:1000;border-bottom:1px solid rgba(0,0,0,.05)}.header-container{display:flex;justify-content:space-between;align-items:center;padding:16px 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20px}.policy-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}.policy-card{background:#fff;border-radius:24px;padding:24px;transition:all .2s;box-shadow:var(--shadow-sm)}.faq-list{max-width:800px;margin:0 auto}.faq-item{background:#fff;border-radius:20px;margin-bottom:16px;overflow:hidden;box-shadow:var(--shadow-sm)}.faq-question{padding:20px 24px;font-weight:600;font-size:18px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .2s}.faq-question:hover{background:var(--light-gray)}.faq-icon{font-size:24px;color:var(--wechat-green);transition:transform .2s}.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .3s ease-out;color:var(--slate-gray);border-top:1px solid transparent}.faq-item.active .faq-answer{max-height:300px;padding:20px;border-top-color:#e5e7eb}.faq-item.active .faq-icon{transform:rotate(45deg)}.site-footer{background:var(--light-gray);padding:32px 0;text-align:center;color:var(--slate-gray);border-top:1px solid rgba(0,0,0,.05)}@media (max-width:768px){section{padding:48px 0}.hero-title{font-size:32px}.container{padding:0 20px}.nav-menu{position:fixed;top:70px;left:-100%;width:100%;background:#fff;box-shadow:var(--shadow-md);transition:.3s;padding:20px}.nav-menu.active{left:0}.nav-list{flex-direction:column;align-items:center;gap:20px}.mobile-menu-toggle{display:flex}}@media (min-width:769px) and (max-width:1024px){.hero-title{font-size:40px}.card-grid{grid-template-columns:repeat(2,1fr)}}:root{--wechat-green:#07c160;--dark-blue:#1f2d3d;--slate-gray:#4b5563;--pure-white:#ffffff;--light-gray:#f5f7fb;--bg-light:#f8fafd;--green-light:#e9f9ef;--border-light:#cbd5e1;--shadow-sm:0 10px 25px -5px rgba(0, 0, 0, 0.05),0 8px 10px -6px rgba(0, 0, 0, 0.02);--shadow-md:0 20px 25px -5px rgba(0, 0, 0, 0.08),0 8px 10px -6px rgba(0, 0, 0, 0.02);--shadow-hover:0 30px 40px -15px rgba(7, 193, 96, 0.15)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Segoe UI',Roboto,'Helvetica Neue','PingFang SC',sans-serif;color:var(--dark-blue);background:var(--pure-white);line-height:1.5;scroll-behavior:smooth}.container{max-width:1280px;margin:0 auto;padding:0 24px}section{padding:80px 0}.site-header{position:sticky;top:0;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);z-index:1000;border-bottom:1px solid rgba(0,0,0,.05)}.header-container{display:flex;justify-content:space-between;align-items:center;padding:16px 24px}.logo{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:700;font-size:20px;color:var(--dark-blue)}.logo span{background:linear-gradient(135deg,#07c160,#059669);background-clip:text;-webkit-background-clip:text;color:transparent}.nav-list{display:flex;gap:32px;list-style:none}.nav-list a{text-decoration:none;color:var(--slate-gray);font-weight:500;transition:color .2s}.nav-list a.active,.nav-list 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tr:hover{background:#fafbfc}.price{color:var(--wechat-green);font-weight:700;font-size:18px}.buy-link{display:inline-block;background:var(--wechat-green);color:#fff;padding:8px 20px;border-radius:40px;text-decoration:none;font-weight:500;transition:all .2s;box-shadow:0 2px 8px rgba(7,193,96,.2)}.buy-link:hover{box-shadow:0 8px 20px rgba(7,193,96,.3)}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:32px;margin-top:48px}.feature-card{background:#fff;border-radius:28px;padding:32px;text-align:center;transition:all .3s;box-shadow:var(--shadow-sm)}.feature-card:hover{transform:scale(1.02);box-shadow:var(--shadow-hover)}.icon-box{width:80px;height:80px;background:var(--green-light);border-radius:32px;display:flex;align-items:center;justify-content:center;margin:0 auto 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.2s}.faq-question:hover{background:var(--light-gray)}.faq-icon{font-size:24px;color:var(--wechat-green);transition:transform .2s}.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .3s ease-out;color:var(--slate-gray);border-top:1px solid transparent}.faq-item.active .faq-icon{transform:rotate(45deg)}.site-footer{background:var(--light-gray);padding:32px 0;text-align:center;color:var(--slate-gray);border-top:1px solid rgba(0,0,0,.05)}.site-footer a{color:var(--slate-gray)}@media (max-width:768px){section{padding:48px 0}.hero-title{font-size:32px}.container{padding:0 20px}.nav-menu{position:fixed;top:70px;left:-100%;width:100%;background:#fff;box-shadow:var(--shadow-md);transition:.3s;padding:20px}.nav-menu.active{left:0}.nav-list{flex-direction:column;align-items:center;gap:20px}.mobile-menu-toggle{display:flex}}@media (min-width:769px) and (max-width:1024px){.hero-title{font-size:40px}.card-grid{grid-template-columns:repeat(2,1fr)}}:root{--wechat-green:#07c160;--dark-blue:#1f2d3d;--slate-gray:#4b5563;--pure-white:#ffffff;--light-gray:#f5f7fb;--bg-light:#f8fafd;--green-light:#e9f9ef;--border-light:#cbd5e1;--shadow-sm:0 10px 25px -5px rgba(0, 0, 0, 0.05),0 8px 10px -6px rgba(0, 0, 0, 0.02);--shadow-md:0 20px 25px -5px rgba(0, 0, 0, 0.08),0 8px 10px -6px rgba(0, 0, 0, 0.02);--shadow-hover:0 30px 40px -15px rgba(7, 193, 96, 0.15);--card-radius:28px;--btn-radius:40px;--transition:all 0.3s ease}.container{max-width:1280px;margin:0 auto;padding:0 24px}.breadcrumb{margin:30px 0;font-size:.9rem;color:var(--slate-gray)}.breadcrumb a{color:var(--wechat-green);text-decoration:none;transition:var(--transition)}.breadcrumb a:hover{text-decoration:underline}.product-d-detail{background:var(--pure-white);border-radius:var(--card-radius);padding:30px;box-shadow:var(--shadow-sm);margin-bottom:60px;display:grid;grid-template-columns:1fr 1fr;gap:40px;border:1px solid rgba(0,0,0,.05)}.product-d-info,.purchase-options{border:none}.product-d-title{font-size:1.8rem;font-weight:700;margin-bottom:15px;color:var(--dark-blue)}.product-d-price{font-size:2.2rem;font-weight:700;color:var(--wechat-green);margin-bottom:25px}.product-d-specs{margin-bottom:25px}.spec-row{display:flex;padding:12px 0;border-bottom:1px solid var(--border-light)}.spec-row:last-child{border-bottom:none}.spec-label{flex:0 0 140px;color:var(--slate-gray);font-weight:500;display:flex;align-items:center;gap:8px}.spec-value{flex:1;font-weight:600;color:var(--dark-blue)}.spec-value.highlight{color:var(--wechat-green)}.option-title{font-size:1.3rem;font-weight:600;margin-bottom:25px;color:var(--dark-blue)}.form-group{margin-bottom:25px}.form-label{display:block;margin-bottom:10px;color:var(--slate-gray);font-weight:500;font-size:.95rem}.required{color:var(--wechat-green)}.email-input{width:100%;padding:12px 15px;border:1px solid var(--border-light);border-radius:var(--btn-radius);font-size:1rem;transition:var(--transition)}.email-input:focus{outline:0;border-color:var(--wechat-green);box-shadow:0 0 0 3px rgba(7,193,96,.1)}.email-hint{margin-top:8px;font-size:.85rem;color:var(--slate-gray);display:flex;align-items:center;gap:5px}.quantity-selector{display:flex;align-items:center;background:var(--pure-white);border-radius:var(--btn-radius);border:1px solid var(--border-light);overflow:hidden;transition:var(--transition);max-width:150px}.quantity-selector:focus-within{border-color:var(--wechat-green);box-shadow:0 0 0 3px rgba(7,193,96,.1)}.quantity-btn{width:40px;height:40px;line-height:40px;border:none;background:var(--green-light);color:var(--dark-blue);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;transition:var(--transition)}.quantity-btn:hover{background:rgba(7,193,96,.1)}.quantity-btn:disabled{opacity:.5;cursor:not-allowed}.quantity-input{flex:1;height:40px;text-align:center;border:none;background:0 0;font-size:1rem;font-weight:600;color:var(--dark-blue);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:20px}.payment-label{font-size:.95rem;color:var(--dark-blue);margin-bottom:8px;font-weight:600}.payment-methods{display:flex;gap:12px;flex-wrap:wrap}.payment-method{flex:1;min-width:100px;padding:12px 8px;border:1px solid var(--border-light);border-radius:18px;background:var(--pure-white);cursor:pointer;transition:var(--transition);text-align:center;font-size:.85rem;font-weight:600}.payment-method.selected,.payment-method:hover{border-color:var(--wechat-green);background:var(--green-light)}.payment-method input[type=radio]{display:none}.payment-icon{margin-bottom:5px}.payment-icon img{border-radius:10px}.total-price{background:var(--green-light);padding:15px 20px;border-radius:var(--card-radius);margin-bottom:25px;display:flex;justify-content:space-between;align-items:center}.total-label{font-size:1rem;color:var(--dark-blue);font-weight:500}.total-amount{font-size:1.8rem;font-weight:700;color:var(--wechat-green)}.action-buttons{display:flex;gap:15px}.btn{padding:14px 28px;border:none;border-radius:var(--btn-radius);font-size:1rem;cursor:pointer;transition:var(--transition);font-weight:600;flex:1;text-align:center;text-decoration:none;display:inline-block}.btn-primary{background:var(--wechat-green);color:#fff;box-shadow:0 2px 8px rgba(7,193,96,.2)}.btn-primary:hover{box-shadow:0 8px 20px rgba(7,193,96,.3)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-secondary{background:var(--pure-white);color:var(--dark-blue);border:1px solid var(--border-light)}.btn-secondary:hover{background:var(--green-light);border-color:var(--wechat-green);color:var(--wechat-green)}.product-d-description{grid-column:1/-1;margin-top:20px}.description-d-title{font-size:1.5rem;margin-bottom:25px;color:var(--dark-blue);display:flex;align-items:center;gap:10px}.description-d-content{line-height:1.8;color:var(--slate-gray)}.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(--dark-blue);margin:25px 0 15px;font-weight:600;display:flex;align-items:center;gap:10px}.description-d-content strong{color:var(--dark-blue)}.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(7,193,96,.05);border-radius:var(--btn-radius)}.feature-icon{color:var(--wechat-green);font-size:1.2rem}.security-notice{background:linear-gradient(135deg,var(--green-light),#d4f5e3);padding:20px;border-radius:var(--card-radius);margin-top:30px;display:flex;align-items:center;gap:15px}.security-icon{font-size:1.5rem;color:var(--wechat-green)}.security-text{flex:1;color:var(--dark-blue);font-size:.95rem;line-height:1.6}.related-products{margin-bottom:80px}.section-title{font-size:1.8rem;font-weight:700;margin-bottom:15px;text-align:center;color:var(--dark-blue)}.section-subtitle{font-size:1.1rem;color:var(--slate-gray);text-align:center;margin-bottom:30px;max-width:600px;margin-left:auto;margin-right:auto}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.ks-product-card{background:var(--pure-white);border-radius:24px;padding:24px;box-shadow:var(--shadow-sm);transition:var(--transition);border:1px solid rgba(0,0,0,.05);display:flex;flex-direction:column}.ks-product-card:hover{box-shadow:var(--shadow-hover)}.ks-product-card-title{font-size:1.2rem;font-weight:700;margin-bottom:12px;color:var(--dark-blue);display:flex;align-items:center;gap:8px}.ks-product-card-description{color:var(--slate-gray);margin-bottom:15px;font-size:.9rem;line-height:1.5;flex-grow:1}.ks-product-card-price{color:var(--wechat-green);font-weight:700;font-size:1.3rem;margin-bottom:15px}.ks-product-card-action .btn{padding:10px 20px;font-size:.9rem}.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:var(--pure-white);border-radius:28px;max-width:900px;width:90%;max-height:90vh;overflow-y:auto;transform:scale(.9);transition:transform .3s ease;box-shadow:var(--shadow-md)}.modal-overlay.active .modal-content{transform:scale(1)}.modal-header{padding:25px 30px;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}.modal-title{font-weight:700;color:var(--dark-blue);gap:10px;font-size:24px;display:flex;align-items:center}.close-btn{font-size:24px;width:40px;height:40px;border:none;background:var(--light-gray);border-radius:50%;cursor:pointer;justify-content:center;color:var(--slate-gray);transition:var(--transition);display:flex;align-items:center}.close-btn:hover{background:var(--border-light);color:var(--dark-blue);transform:rotate(90deg)}.modal-body{padding:30px;display:grid;grid-template-columns:repeat(2,1fr);gap:30px}.order-summary{background:var(--light-gray);padding:25px;border-radius:20px}.summary-title{font-size:18px;font-weight:600;color:var(--dark-blue);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(--slate-gray);font-size:14px}.summary-value{font-weight:600;color:var(--dark-blue)}.summary-value.total{font-size:24px;color:red}.summary-value.total::after{content:' USDT';font-size:16px;color:var(--dark-blue)}.payment-title{font-size:16px;font-weight:600;color:var(--dark-blue);margin-bottom:15px;display:flex;align-items:center;gap:8px}.selected-payment{background:var(--green-light);border:2px solid var(--wechat-green);padding:15px;border-radius:12px;display:flex;align-items:center;gap:15px;margin-bottom:20px}.selected-payment .payment-icon{font-size:2rem;color:var(--wechat-green)}.qr-section{text-align:center;padding:20px;margin-bottom:20px}.qr-code{width:200px;height:200px;margin:0 auto 15px;background:var(--pure-white);padding:10px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--slate-gray);border:1px solid var(--border-light)}.address-section{background:var(--pure-white);border:2px solid var(--border-light);border-radius:12px;padding:15px;margin-bottom:15px;position:relative}.address-label{font-size:13px;color:var(--slate-gray);margin-bottom:8px;display:flex;align-items:center;gap:5px}.address-value{font-size:14px;word-break:break-all;color:var(--dark-blue);line-height:1.4;padding-right:40px;width:85%}.copy-btn{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:var(--wechat-green);color:var(--pure-white);border:none;padding:8px 15px;border-radius:30px;font-size:13px;cursor:pointer;transition:var(--transition);display:flex;align-items:center;gap:5px}.copy-btn:hover{background:#059669}.copy-btn.copied{background:#10b981}.btn-confirm{background:var(--wechat-green);color:var(--pure-white);padding:14px 24px;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 2px 8px rgba(7,193,96,.2)}.btn-confirm:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px rgba(7,193,96,.3)}.btn-confirm:disabled{opacity:.6;cursor:not-allowed}.countdown-section{background:linear-gradient(135deg,var(--green-light),#d4f5e3);padding:20px;border-radius:20px;margin-bottom:25px;text-align:center}.countdown-title{font-size:14px;color:var(--dark-blue);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:var(--wechat-green);font-family:'Courier New',monospace;letter-spacing:2px}.countdown-timer.warning{animation:blink 1s ease-in-out infinite}@keyframes blink{0%,50%{opacity:1}100%,51%{opacity:.3}}.countdown-hint{font-size:12px;color:#065f46;margin-top:8px}.toast-container{position:fixed;top:20px;right:20px;z-index:9999;pointer-events:none}.toast{background:#fff;color:#fff;border-radius:12px;box-shadow:var(--shadow-md);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)}100%{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:20px;padding:20px}.feature-list{grid-template-columns:1fr}.action-buttons{flex-direction:column}.payment-methods{display:grid;grid-template-columns:repeat(3,1fr)}.payment-method{min-width:auto}.modal-body{grid-template-columns:1fr;gap:20px;padding:20px}.product-grid{grid-template-columns:1fr}.container{padding:0 20px}.products-table-wrapper{background:0 0;border-radius:0;border:0;box-shadow:unset}.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;border:1px solid var(--border-light);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}}