*{margin:0;padding:0;box-sizing:border-box;font-family:'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif}:root{--primary:#6C63FF;--primary-light:#8A85FF;--primary-dark:#5752D4;--secondary:#FF6584;--accent:#36D1DC;--dark:#2D3748;--light:#F7FAFC;--gray:#A0AEC0;--success:#48BB78;--warning:#ED8936;--danger:#F56565;--primary-blue:#4a6cf7;--hover-blue:#3a5ce5;--light-blue:#f0f5ff;--bg-color:#f8fafc;--card-bg:#ffffff;--text-primary:#2a3547;--text-secondary:#5a6a85;--border-color:#e2e8f0;--price-red:#ef4444;--success-green:#10b981;--transition:all 0.3s ease;--card-radius:12px;--btn-radius:8px;--shadow:0 4px 20px rgba(0, 0, 0, 0.06);--shadow-hover:0 8px 30px rgba(0, 0, 0, 0.12)}a{text-decoration:none}body{background:linear-gradient(135deg,#f5f7fa 0,#e4edf5 100%);color:var(--dark);line-height:1.6;min-height:100vh}.container{max-width:1400px;margin:0 auto;padding:0 20px}header{background:rgba(255,255,255,.95);backdrop-filter:blur(10px);box-shadow:0 4px 20px 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h4{color:var(--dark);margin-bottom:5px}.testimonial-info p{color:var(--gray);font-size:.9rem}.testimonial-text{color:var(--dark);line-height:1.6;margin-bottom:15px;font-style:italic}.stars{color:#ffc107}footer{background:var(--dark)}.social-links{display:flex;gap:15px;margin-top:20px}.social-links a{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.1);color:#fff;transition:all .3s}.social-links a:hover{background:var(--primary);transform:translateY(-3px)}.copyright{text-align:center;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);color:#a0aec0;font-size:.9rem}.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, 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0;font-size:.9rem;color:var(--text-secondary)}.breadcrumb a{color:var(--primary);text-decoration:none;transition:var(--transition)}.breadcrumb a:hover{text-decoration:underline}.breadcrumb span{margin:0 8px}.page-b-header{margin:40px 0;text-align:center}.page-b-title{font-size:2.5rem;font-weight:700;margin-bottom:15px;color:var(--text-primary);display:flex;align-items:center;justify-content:center;gap:15px}.page-b-subtitle{font-size:1.2rem;color:var(--text-secondary);max-width:600px;margin:0 auto}.articles-b-container{margin-bottom:80px}.articles-b-list{display:flex;flex-direction:column;gap:25px}.article-b-card{background:var(--card-bg);border-radius:var(--card-radius);padding:30px;box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border-color)}.article-b-card:hover{box-shadow:var(--shadow-hover)}.article-b-title{font-size:1.5rem;font-weight:700;margin-bottom:15px;color:var(--text-primary)}.article-b-title a{text-decoration:none;color:inherit;transition:var(--transition)}.article-b-title a:hover{color:var(--primary)}.article-b-excerpt{color:var(--text-secondary);margin-bottom:20px;line-height:1.6}.article-b-meta{display:flex;align-items:center;gap:20px;color:var(--text-secondary);font-size:.9rem}.article-b-meta-item{display:flex;align-items:center;gap:5px}.read-b-more{display:inline-flex;align-items:center;gap:8px;color:var(--primary);text-decoration:none;font-weight:600;transition:var(--transition);margin-top:15px}.read-b-more:hover{gap:12px}.pagination{display:flex;justify-content:center;align-items:center;gap:10px;margin-top:50px}.pagination-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:var(--btn-radius);background:var(--card-bg);color:var(--text-primary);text-decoration:none;font-weight:600;transition:var(--transition);border:1px solid var(--border-color)}.pagination-btn.active,.pagination-btn:hover{background:var(--primary-blue);color:#fff;border-color:var(--primary-blue)}.pagination-btn.disabled{opacity:.5;cursor:not-allowed}@media (max-width:768px){.breadcrumb{margin:20px 0}.page-b-title{font-size:2rem}.article-b-title{font-size:1.3rem}.article-b-meta{flex-direction:column;align-items:flex-start;gap:10px}}@media (max-width:480px){.page-b-title{font-size:1.8rem}.article-b-card{padding:20px}}.article-d-detail{display:grid;grid-template-columns:2fr 1fr;gap:40px;margin-bottom:80px}.article-d-main{background:var(--card-bg);border-radius:var(--card-radius);padding:40px;box-shadow:var(--shadow);border:1px solid var(--border-color)}.article-d-header{margin-bottom:30px;padding-bottom:20px;border-bottom:1px solid var(--border-color)}.article-d-title{font-size:2.2rem;font-weight:700;margin-bottom:20px;color:var(--text-primary);line-height:1.3}.article-d-meta{display:flex;align-items:center;gap:20px;color:var(--text-secondary);font-size:.95rem}.article-d-meta-item{display:flex;align-items:center;gap:8px}.article-d-content{line-height:1.8;color:var(--text-primary)}.article-d-content h2{font-size:1.6rem;font-weight:700;margin:40px 0 20px;color:var(--text-primary);display:flex;align-items:center;gap:10px}.article-d-content h3{font-size:1.3rem;font-weight:600;margin:30px 0 15px;color:var(--text-primary)}.article-d-content p{margin-bottom:20px;font-size:1.05rem}.article-d-content ol,.article-d-content ul{margin:20px 0;padding-left:25px}.article-d-content li{margin-bottom:10px;line-height:1.6}.article-d-content strong{color:var(--text-primary);font-weight:600}.sidebar{display:flex;flex-direction:column;gap:30px}.sidebar-widget{background:var(--card-bg);border-radius:var(--card-radius);padding:25px;box-shadow:var(--shadow)}.widget-title{font-size:1.3rem;font-weight:700;margin-bottom:20px;color:var(--text-primary);display:flex;align-items:center;gap:10px;padding-bottom:15px;border-bottom:1px solid var(--border-color)}.author-info{text-align:center;padding:20px 0}.author-avatar{width:80px;height:80px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--hover-blue));display:flex;align-items:center;justify-content:center;color:#fff;font-size:2rem;margin:0 auto 15px}.author-name{font-size:1.2rem;font-weight:600;margin-bottom:5px;color:var(--text-primary)}.author-bio{color:var(--text-secondary);font-size:.9rem;line-height:1.5}.popular-article-d-title a{text-decoration:none;color:var(--text-primary);transition:var(--transition)}.popular-article-d-title a:hover{color:var(--primary-blue)}.article-card-title a{text-decoration:none;color:inherit;transition:var(--transition)}.article-card-title a:hover{color:var(--primary-blue)}@media (max-width:1024px){.article-d-detail{grid-template-columns:1fr}}@media (max-width:768px){.article-d-main{padding:25px}.article-d-title{font-size:1.8rem}.article-d-meta{flex-direction:column;align-items:flex-start;gap:10px}}@media (max-width:480px){.article-d-title{font-size:1.6rem}}.product-d-detail{background:var(--card-bg);border-radius:var(--card-radius);padding:30px;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:2px solid var(--border-color);border-radius:var(--btn-radius);font-size:1rem;transition:var(--transition)}.email-input:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(74,108,247,.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:2px solid var(--border-color);overflow:hidden;transition:var(--transition)}.quantity-selector:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(74,108,247,.1)}.quantity-btn{width:45px;height:45px;line-height:45px;border:none;background:var(--light-blue);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(74,108,247,.1)}.quantity-btn:disabled{opacity:.5;cursor:not-allowed}.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: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:2px 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(--primary);background:var(--light-blue)}.payment-method input[type=radio]{display:none}.payment-icon{font-size:1.5rem;margin-bottom:5px;color:var(--primary)}.payment-icon>img{border-radius:var(--btn-radius)}.total-price{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);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:#0369a1;font-weight:500}.total-amount{font-size:1.8rem;font-weight:700;color:#0369a1}.action-buttons{display:flex;gap:15px}.btn{padding:15px 25px;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{color:#fff}.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;background:var(--card-bg);border-radius:var(--card-radius);padding:30px;box-shadow:var(--shadow);margin-top:20px}.description-title{font-size:1.5rem;margin-bottom:25px;color:var(--text-primary);display:flex;align-items:center;gap:10px}.description-content{line-height:1.8;color:var(--text-secondary)}.description-content p{margin-bottom:20px;font-size:1.05rem;line-height:1.8}.description-content ol,.description-content ul{margin:20px 0;padding-left:25px}.description-content li{margin-bottom:10px;line-height:1.6}.description-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-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(74,108,247,.05);border-radius:var(--btn-radius)}.feature-icon{color:var(--success-green);font-size:1.2rem}.security-notice{background:linear-gradient(135deg,#e0f2fe,#bae6fd);padding:20px;border-radius:var(--card-radius);margin-top:30px;display:flex;align-items:center;gap:15px}.security-icon{font-size:1.5rem;color:#0369a1}.security-text{flex:1;color:#0369a1;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}.product-card{background:var(--card-bg);border-radius:var(--card-radius);padding:25px;box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border-color);display:flex;flex-direction:column}.product-card:hover{box-shadow:var(--shadow-hover)}.product-card-title{font-size:1.2rem;font-weight:600;margin-bottom:15px;color:var(--text-primary);flex-grow:0;gap:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.product-card-description{color:var(--text-secondary);margin-bottom:15px;font-size:.95rem;line-height:1.6;flex-grow:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.product-card-price{color:var(--price-red);font-weight:600;font-size:1.3rem;margin-bottom:15px;flex-grow:0}.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)}.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;background:#f8f9fa;border-radius:15px;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:95%}.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(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}@media (max-width:1024px){.product-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.product-d-detail{grid-template-columns:1fr;gap:20px}.feature-list{grid-template-columns:1fr}.action-buttons{flex-direction:column}.payment-methods{grid-template-columns:repeat(2,1fr)}.modal-body{grid-template-columns:1fr;gap:20px}.product-grid{grid-template-columns:1fr}.summary-row:nth-child(2),.summary-row:nth-child(5){display: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-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}}