:root{--wechat-green:#07c160;--wechat-dark:#059e4e;--deep-bluegray:#1f2f3a;--light-gray:#f5f7fb;--white:#ffffff;--deep-green:#1b4d2e;--warm-white:#fefaf5;--shadow-sm:0 8px 24px rgba(0, 0, 0, 0.05);--shadow-md:0 12px 32px rgba(0, 0, 0, 0.08);--radius-lg:24px;--radius-xl:32px;--radius-2xl:48px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:var(--light-gray);color:#1f2937;line-height:1.5;scroll-behavior:smooth}.container{max-width:1200px;margin:0 auto;padding:0 24px}.site-header{background:rgba(255,255,255,.95);backdrop-filter:blur(10px);position:sticky;top:0;z-index:1000;box-shadow:0 1px 0 rgba(0,0,0,.05)}.header-container{display:flex;justify-content:space-between;align-items:center;height:70px}.logo a{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:700;font-size:1.35rem;color:var(--wechat-green)}.logo img{border-radius:12px}.nav-menu{display:flex;gap:32px;list-style:none}.nav-menu a{text-decoration:none;color:#374151;font-weight:500;transition:color .2s}.nav-menu a:hover{color:var(--wechat-green)}.mobile-menu-toggle{display:none;flex-direction:column;gap:6px;background:0 0;border:none;cursor:pointer}.mobile-menu-toggle span{width:28px;height:2px;background:#374151;transition:.3s}.hero{background:linear-gradient(135deg,var(--wechat-green),var(--wechat-dark));border-radius:0 0 var(--radius-2xl) var(--radius-2xl);padding:80px 0;color:#fff;text-align:center;margin-bottom:60px}.hero-badge{display:inline-block;background:rgba(255,255,255,.2);backdrop-filter:blur(4px);border-radius:100px;padding:6px 16px;font-size:.85rem;margin-bottom:20px}.hero h1{font-size:3rem;font-weight:800;margin-bottom:20px;letter-spacing:-.02em}.hero p{font-size:1.25rem;opacity:.95;max-width:600px;margin:0 auto}.section{background:var(--white);border-radius:var(--radius-xl);padding:48px 40px;margin-bottom:48px;box-shadow:var(--shadow-sm)}.section-title{text-align:center;font-size:1.9rem;font-weight:700;margin-bottom:48px;background:linear-gradient(135deg,var(--wechat-green),var(--deep-green));-webkit-background-clip:text;background-clip:text;color:transparent}.filter-bar{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px;justify-content:center}.filter-btn{background:var(--light-gray);border:none;padding:10px 24px;border-radius:40px;font-weight:500;cursor:pointer;transition:all .2s}.filter-btn.active{background:var(--wechat-green);color:#fff}.product-table-wrapper{overflow-x:auto}.product-table{width:100%;border-collapse:collapse;background:#fff;border-radius:20px;overflow:hidden}.product-table th{background:var(--light-gray);padding:16px;text-align:left;font-weight:600}.product-table td{padding:16px;border-bottom:1px solid #eef2f6}.product-table .product-title{font-weight:700}.product-table .price{font-weight:700;color:var(--price-red)}.product-table small{color:var(--text-secondary)}.buy-link{background:var(--wechat-green);color:#fff;padding:6px 16px;border-radius:30px;text-decoration:none;font-size:.85rem;font-weight:500;transition:background .2s;display:inline-block}.buy-link:hover{background:var(--wechat-dark)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:32px}.feature-card{background:#f9fafc;border-radius:28px;padding:32px 24px;text-align:center;transition:transform .2s}.feature-icon{font-size:2.6rem;margin-bottom:16px}.feature-card h3{font-size:1.35rem;font-weight:700;margin-bottom:12px}.feature-card p{color:#546e7a;line-height:1.6}.process-steps{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between}.step{flex:1;min-width:200px;background:#f9fafc;border-radius:28px;padding:32px 24px;text-align:center}.step-number{width:48px;height:48px;background:var(--wechat-green);color:#fff;border-radius:60px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.25rem;margin:0 auto 20px}.testimonials-section{background:var(--warm-white);border-radius:var(--radius-xl);padding:48px 40px;margin-bottom:48px}.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px}.testimonial-card{background:#fff;border-radius:24px;padding:28px;border:1px solid #f5e6d3;box-shadow:var(--shadow-sm)}.testimonial-stars{color:#fbbf24;margin-bottom:16px;font-size:1.1rem}.testimonial-text{color:var(--deep-green);font-size:1rem;line-height:1.6;margin-bottom:24px}.testimonial-author{display:flex;align-items:center;gap:12px}.author-avatar{width:48px;height:48px;background:#e8f5e9;border-radius:60px;display:flex;align-items:center;justify-content:center;color:var(--wechat-green);font-weight:700}.faq-grid{display:flex;flex-direction:column;gap:16px}.faq-item{background:var(--light-gray);border-radius:20px;overflow:hidden}.faq-question{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;cursor:pointer;font-weight:600;transition:background .2s}.faq-question:hover{background:#eef2fa}.faq-answer{max-height:0;overflow:hidden;padding:0 24px;transition:max-height .3s ease;background:#fff;border-top:1px solid transparent}.faq-item.active .faq-answer{max-height:300px;padding:20px 24px;border-top-color:#e5e7eb}.footer-cta{background:#eef3fc;border-radius:48px;padding:48px;text-align:center;margin-bottom:48px}.footer-cta h3{font-size:1.8rem;margin-bottom:16px}.footer-cta a{margin-top:26px}.btn-primary{background:var(--wechat-green);color:#fff;border:none;padding:14px 32px;border-radius:60px;font-weight:600;cursor:pointer;font-size:1rem;display:inline-block;text-decoration:none}.btn-primary:hover{background:var(--wechat-dark)}.site-footer{background:var(--deep-bluegray);color:#fff;padding:48px 0 24px;margin-top:48px}.site-footer a{color:#fff}.footer-content{text-align:center}.copyright{opacity:.7;font-size:.85rem}@media (max-width:768px){.mobile-menu-toggle{display:flex}.main-nav{position:fixed;top:70px;left:-100%;width:100%;height:calc(100vh - 70px);background:#fff;transition:left .3s;padding:24px}.main-nav.active{left:0}.nav-menu{flex-direction:column;gap:20px}.hero h1{font-size:2rem}.section{padding:32px 24px}.section-title{font-size:1.6rem}.features-grid,.process-steps{grid-template-columns:1fr}}:root{--wechat-green:#07c160;--wechat-dark:#059e4e;--hover-green:#059e4e;--light-green:#e8f5e9;--deep-bluegray:#1f2f3a;--light-gray:#f5f7fb;--white:#ffffff;--deep-green:#1b4d2e;--warm-white:#fefaf5;--text-primary:#2a3547;--text-secondary:#5a6a85;--border-color:#ebf1f6;--price-red:#ef4444;--success-green:#07c160;--transition:all 0.3s ease;--card-radius:24px;--btn-radius:30px;--shadow:0 8px 24px rgba(0, 0, 0, 0.05);--shadow-hover:0 12px 32px 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:#2a3547;--bs-card-subtitle-color:#5a6a85;--bs-card-border-width:0px;--bs-card-border-color:#ebf1f6;--bs-card-border-radius:24px;--bs-card-box-shadow:0 8px 24px rgba(0, 0, 0, 0.05);--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}.breadcrumb{margin:30px 0;font-size:.9rem;color:var(--text-secondary)}.breadcrumb a{color:var(--wechat-green);text-decoration:none;transition:var(--transition)}.breadcrumb a:hover{text-decoration:underline}.breadcrumb span{margin:0 8px}.product-d-detail{background:var(--white);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:60px;display:grid;grid-template-columns:1fr 1fr;gap:40px}.product-d-info,.purchase-options{border:none}.product-d-title{font-size:1.8rem;font-weight:700;margin-bottom:15px;color:var(--text-primary)}.product-d-price{font-size:2.2rem;font-weight:700;color:var(--price-red);margin-bottom:25px}.product-d-specs{margin-bottom:25px}.spec-row{display:flex;padding:12px 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:1.3rem;font-weight:600;margin-bottom:25px;color:var(--text-primary)}.form-group{margin-bottom:25px}.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:12px 15px;border:1px solid var(--border-color);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(--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: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(--light-green);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(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(--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:20px}.payment-label{font-size:.95rem;color:var(--text-primary);margin-bottom:8px;font-weight:600}.payment-methods{display:flex;gap:8px;flex-wrap:wrap}.payment-method{flex:1;min-width:120px;padding:12px 8px;border:1px solid var(--border-color);border-radius:var(--btn-radius);background:#fff;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(--light-green)}.payment-method input[type=radio]{display:none}.payment-icon{margin-bottom:5px}.payment-icon>img{border-radius:10px}.total-price{background:linear-gradient(135deg,#e8f5e9,#c8e6d9);padding:15px;border-radius:var(--card-radius);margin-bottom:25px;display:flex;justify-content:space-between;align-items:center}.total-label{font-size:1rem;color:var(--deep-green);font-weight:500}.total-amount{font-size:1.8rem;font-weight:700;color:var(--deep-green)}.action-buttons{display:flex;gap:15px}.btn{padding:15px 25px;border:none;border-radius:var(--btn-radius);font-size:1rem;cursor:pointer;font-weight:600;flex:1;text-align:center;text-decoration:none;display:inline-block}.btn-primary{background:linear-gradient(135deg,var(--wechat-green),var(--wechat-dark));color:#fff}.btn-primary:hover{box-shadow:var(--shadow-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-secondary{background:linear-gradient(135deg,#f5f7fa,#e9ecef);color:var(--text-primary)}.btn-secondary:hover{background:linear-gradient(135deg,#e9ecef,#dee2e6)}.product-d-description{grid-column:1/-1;margin-top:20px}.description-d-title{font-size:1.5rem;margin-bottom:25px;color:var(--text-primary);display:flex;align-items:center;gap:10px}.description-d-content{line-height:1.8;color:var(--text-secondary)}.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-primary);margin:25px 0 15px;font-weight:600;display:flex;align-items:center;gap:10px}.description-d-content 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(7,193,96,.05);border-radius:var(--btn-radius)}.feature-icon{color:var(--success-green);font-size:1.2rem}.security-notice{background:linear-gradient(135deg,#e8f5e9,#c8e6d9);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(--deep-green)}.security-text{flex:1;color:var(--deep-green);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(--text-primary)}.section-subtitle{font-size:1.1rem;color:var(--text-secondary);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(--white);border-radius:var(--card-radius);padding:var(--bs-card-spacer-y) var(--bs-card-spacer-x);box-shadow:var(--shadow);transition:var(--transition);border:var(--bs-card-border-width) solid var(--bs-card-border-color);display:flex;flex-direction:column}.ks-product-card:hover{box-shadow:var(--shadow-hover)}.ks-product-card-title{font-size:1.2rem;font-weight:600;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:15px;font-size:.95rem;line-height:1.6;flex-grow:1}.ks-product-card-price{color:var(--price-red);font-weight:600;font-size:1.3rem;margin-bottom:15px;flex-grow:0}.ks-product-card-action{flex-grow: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)}.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%;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:#059e4e}.copy-btn.copied{background:#059e4e}.btn-confirm{background:linear-gradient(135deg,var(--success-green),#059e4e);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){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: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}.filter-btn{background:var(--white)}#products .section{background:0 0;box-shadow:none;padding:unset}.product-table-wrapper{background:0 0;border-radius:0;border:0;box-shadow:unset}.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:var(--white);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}.testimonials-grid{grid-template-columns: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}.modal-body{padding:20px}.address-value{font-size:12px}}