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var(--border-color);justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:15px;display:flex}.update-header h3{color:var(--primary-color);font-size:1.4rem;font-weight:600}.update-date{background:var(--bg-accent);color:var(--text-secondary);border-radius:20px;padding:6px 12px;font-size:.9rem;font-weight:500}.update-content h4{color:var(--text-primary);margin-bottom:15px;font-size:1.1rem;font-weight:600}.update-content ul{padding-left:0;list-style:none}.update-content ul li{color:var(--text-secondary);margin-bottom:10px;padding-left:20px;line-height:1.6;position:relative}.update-content ul li:before{content:"✓";color:var(--primary-color);font-weight:700;position:absolute;left:0}.faq-content{max-width:800px;margin:0 auto}.faq-category{margin-bottom:40px}.category-title{color:var(--primary-color);border-bottom:2px solid var(--primary-light);align-items:center;gap:15px;margin-bottom:25px;padding-bottom:15px;font-size:1.4rem;font-weight:600;display:flex}.category-title i{text-align:center;width:24px;font-size:1.2rem}.faq-item{border:1px solid var(--border-color);background:#fff;border-radius:12px;margin-bottom:15px;transition:all .3s;overflow:hidden}.faq-item:hover{border-color:var(--primary-color);box-shadow:var(--shadow-md)}.faq-question{cursor:pointer;background:var(--bg-secondary);justify-content:space-between;align-items:center;padding:20px 25px;transition:all .3s;display:flex}.faq-question:hover{background:var(--bg-accent)}.faq-question h4{color:var(--text-primary);margin:0;font-size:1rem;font-weight:600;line-height:1.4}.faq-question i{color:var(--primary-color);font-size:.9rem;transition:transform .3s}.faq-item.active .faq-question i{transform:rotate(180deg)}.faq-answer{max-height:0;padding:0 25px;transition:all .3s;overflow:hidden}.faq-item.active .faq-answer{max-height:none;padding:0 25px 20px;overflow:visible}.faq-answer p{color:var(--text-secondary);margin-bottom:15px;line-height:1.6}.faq-answer h5{color:var(--text-primary);margin:20px 0 10px;font-size:1rem;font-weight:600}.faq-answer ol{margin:15px 0;padding-left:20px}.faq-answer ol li{color:var(--text-secondary);margin-bottom:8px;line-height:1.6}.faq-answer ul{margin:15px 0;padding-left:20px}.faq-answer ul li{color:var(--text-secondary);margin-bottom:8px;line-height:1.6}.faq-answer strong{color:var(--text-primary);font-weight:600}.contact-content{grid-template-columns:1fr 1fr;gap:60px;max-width:1000px;margin:0 auto;display:grid}.contact-content-cn{flex-direction:column;gap:60px;max-width:800px;margin:0 auto;display:flex}.contact-form h3,.contact-info h3{color:var(--text-primary);margin-bottom:25px;font-size:1.5rem;font-weight:600}.contact-items{flex-direction:column;gap:20px;display:flex}.contact-item{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;align-items:center;gap:20px;padding:20px;transition:all .3s;display:flex}.contact-item:hover{border-color:var(--primary-color);transform:translate(5px)}.contact-item i{width:24px;color:var(--primary-color);font-size:1.2rem}.contact-detail{flex-direction:column;gap:5px;display:flex}.contact-label{color:var(--text-light);font-size:.9rem;font-weight:500}.contact-value{color:var(--text-primary);font-weight:500}.form{gap:20px}.form,.form-group{flex-direction:column;display:flex}.form-group{gap:8px}.form-group label{color:var(--text-primary);font-weight:500}.form-group input,.form-group select,.form-group textarea{border:1px solid var(--border-color);background:var(--bg-primary);border-radius:8px;padding:12px 16px;font-size:1rem;transition:all .3s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary-color);outline:none;box-shadow:0 0 0 3px #4fd1c71a}.form-group textarea{resize:vertical;min-height:100px}.btn-submit{background:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:10px;padding:15px 30px;font-size:1rem;font-weight:600;transition:all .3s;display:flex}.btn-submit:hover{background:var(--primary-dark);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.wechat-qr{text-align:center}.wechat-qr h3{color:var(--text-primary);margin-bottom:25px;font-size:1.5rem;font-weight:600}.qr-container{margin-bottom:20px}.qr-container,.qr-placeholder{justify-content:center;display:flex}.qr-placeholder{border:2px dashed var(--border-color);background:var(--bg-secondary);cursor:pointer;border-radius:12px;flex-direction:column;align-items:center;width:200px;height:200px;transition:all .3s;overflow:hidden}.qr-placeholder .qr-code{object-fit:contain;width:100%;height:100%}.qr-placeholder:hover{border-color:var(--primary-color);background:var(--bg-accent)}.qr-placeholder i{color:var(--primary-color);margin-bottom:10px;font-size:3rem}.qr-placeholder p{color:var(--text-primary);margin:0 0 5px;font-size:1.1rem;font-weight:500}.qr-note{color:var(--text-light);font-size:.9rem;font-style:italic}.qr-description{color:var(--text-secondary);margin:0;font-size:1rem;line-height:1.6}.features-content{max-width:1000px;margin:0 auto}.features-modules{flex-direction:column;gap:40px;margin-top:40px;display:flex}.feature-module{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:16px;padding:30px;transition:all .3s;box-shadow:0 2px 10px #0000000d}.feature-module:hover{border-color:var(--primary-color);transform:translateY(-2px);box-shadow:0 8px 25px #0000001a}.module-header{border-bottom:2px solid var(--primary-light);gap:15px;margin-bottom:25px;padding-bottom:15px}.module-header,.module-icon{align-items:center;display:flex}.module-icon{background:linear-gradient(135deg,var(--primary-color),var(--primary-light));border-radius:50%;justify-content:center;width:60px;height:60px;transition:transform .3s}.feature-module:hover .module-icon{transform:scale(1.1)}.module-icon i{color:#fff;font-size:1.5rem}.module-header h3{color:var(--text-primary);margin:0;font-size:1.6rem;font-weight:600}.module-content{flex-direction:column;gap:15px;display:flex}.module-gif{justify-content:center;width:100%;display:flex}.module-gif .gif-item{flex-direction:column;align-items:center;display:flex}.module-gif .gif-item:first-child{margin-right:40px}.module-gif .gif-item .gif{width:300px}.gif-title{text-align:center;color:var(--text-light);margin:0;font-size:.9rem;font-style:italic}.feature-item{background:var(--bg-secondary);border-radius:8px;align-items:flex-start;gap:15px;padding:15px;transition:background-color .3s;display:flex}.feature-item:hover{background:var(--bg-hover)}.feature-number{color:var(--primary-color);flex-shrink:0;margin-top:2px;font-size:1rem;font-weight:600}.feature-item p{color:var(--text-secondary);margin:0;font-size:1rem;line-height:1.6}.back-to-top{background:var(--primary-color);color:#fff;cursor:pointer;opacity:0;visibility:hidden;z-index:1000;width:50px;height:50px;box-shadow:var(--shadow-lg);border:none;border-radius:50%;transition:all .3s;position:fixed;bottom:30px;right:30px}.back-to-top.visible{opacity:1;visibility:visible}.back-to-top:hover{background:var(--primary-dark);transform:translateY(-2px)}.sidebar-toggle{background:var(--primary-color);color:#fff;cursor:pointer;z-index:101;width:50px;height:50px;box-shadow:var(--shadow-lg);border:none;border-radius:50%;display:none;position:fixed;top:80px;left:20px}.sidebar-toggle.visible{display:block}.sidebar.mobile-active{transform:translate(0)}.sidebar-overlay{z-index:997;opacity:0;visibility:hidden;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#0006;transition:all .3s;position:fixed;inset:60px 0 0}.sidebar-overlay.active{opacity:1;visibility:visible}@media (max-width:1024px){.sidebar{opacity:0;visibility:hidden;width:100%;height:auto;max-height:calc(100vh - 60px);box-shadow:none;border-right:none;border-bottom:1px solid var(--border-color);background:var(--bg-primary);z-index:998;transition:all .3s;position:fixed;top:60px;left:0;right:0;overflow-y:auto;transform:translateY(-100%)}.sidebar.mobile-active{opacity:1;visibility:visible;transform:translateY(0);box-shadow:0 10px 30px #00000026}.nav-list{padding:15px 0}.nav-link{padding:14px 20px}.nav-sublist{border-radius:10px;margin:0 15px}.nav-sublink{padding:12px 20px 12px 35px!important}.content{margin-left:0;padding:30px 20px}.contact-content{grid-template-columns:1fr;gap:40px}.nav-toggle{display:flex}.nav-container{padding:0 15px}.co-branding-logo{gap:8px}.alpha-logo,.ticnote-logo{height:28px}.brand-separator{font-size:1.2rem}.download-btn-header{border-radius:6px;padding:8px 16px;font-size:.85rem}}@media (max-width:768px){.nav-container{padding:0 10px}.co-branding-logo{gap:6px}.alpha-logo,.ticnote-logo{height:24px}.brand-separator{font-size:1rem}.download-btn-header{padding:6px 12px;font-size:.8rem}.section-title{font-size:2rem}.features-grid,.magnetic-device-types,.steps-grid{grid-template-columns:1fr}.magnetic-device-types{gap:20px}.update-header{flex-direction:column;align-items:flex-start;gap:15px}.faq-question{padding:20px}.faq-answer{padding:0 20px}.faq-item.active .faq-answer{padding:0 20px 20px}}@media (max-width:480px){.ticnote-intro{display:none}.content{padding:20px 15px}.section-title{font-size:1.8rem}.section-subtitle{font-size:1rem}.feature-card{padding:25px 20px}.update-item{padding:20px}.contact-item{padding:15px}.qr-placeholder{width:150px;height:150px}.qr-placeholder i{font-size:2.5rem}.qr-placeholder p{font-size:1rem}.qr-note{font-size:.8rem}.module-gif{width:100%;display:flex;flex-direction:column!important;margin:0!important;padding:0!important}.module-gif .gif-item{flex-direction:column;align-items:center;width:100%;display:flex}.module-gif .gif-item:first-child{margin-right:0!important}.module-gif .gif-item .gif{width:100%}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--primary-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--primary-dark)}