:root{--primary-color: #4caf50;--primary-light: #81c784;--primary-dark: #388e3c;--secondary-color: #2196f3;--accent-color: #ff9800;--white: #ffffff;--light-gray: #f5f5f5;--medium-gray: #e0e0e0;--dark-gray: #757575;--text-color: #333333;--text-light: #666666;--bg-light: #f9f9f9;--bg-white: #ffffff;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .1);--shadow-md: 0 4px 8px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 16px rgba(0, 0, 0, .1);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 20px;--space-xs: .5rem;--space-sm: 1rem;--space-md: 1.5rem;--space-lg: 2rem;--space-xl: 3rem;--space-xxl: 4rem;--font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;--font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-body);color:var(--text-color);line-height:1.6;background-color:var(--bg-light)}a{text-decoration:none;color:inherit;outline:none}.container{max-width:1200px;margin:0 auto;padding:0 var(--space-md)}h1,h2,h3,h4{font-family:var(--font-heading);font-weight:600;line-height:1.3;letter-spacing:-.02em}h1{font-size:3rem;margin-bottom:var(--space-md);font-weight:700}h2{font-size:2.5rem;margin-bottom:var(--space-sm);font-weight:700}h3{font-size:1.5rem;margin-bottom:var(--space-xs);font-weight:600}p{margin-bottom:var(--space-sm);color:var(--text-light)}.section-title{text-align:center;margin-bottom:var(--space-sm);color:var(--primary-dark);font-weight:700;letter-spacing:-.01em}.section-subtitle{text-align:center;margin-bottom:var(--space-xl);font-size:1.1rem;max-width:600px;margin-left:auto;margin-right:auto;font-weight:400;line-height:1.6}button{font-family:var(--font-body);font-weight:500;cursor:pointer;border:none;outline:none;transition:all .3s ease}.btn-primary{background-color:var(--primary-color);color:var(--white);padding:var(--space-sm) var(--space-lg);border-radius:var(--radius-md);font-size:1rem;font-weight:600;display:inline-flex;align-items:center;gap:var(--space-xs);letter-spacing:.01em}.btn-primary:hover{background-color:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:transparent;color:var(--primary-color);padding:var(--space-sm) var(--space-lg);border-radius:var(--radius-md);font-size:1rem;font-weight:600;border:2px solid var(--primary-color);display:inline-flex;align-items:center;gap:var(--space-xs);letter-spacing:.01em}.btn-secondary:hover{background-color:var(--primary-color);color:var(--white);transform:translateY(-2px)}.btn-download{background-color:var(--secondary-color);color:var(--white);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);font-size:.9rem;font-weight:600;display:inline-flex;align-items:center;gap:var(--space-xs);margin-top:var(--space-sm);letter-spacing:.01em}.btn-download:hover{background-color:#1976d2;transform:translateY(-2px);box-shadow:var(--shadow-md)}.navbar{position:fixed;top:0;left:0;right:0;background-color:var(--white);box-shadow:var(--shadow-sm);z-index:1000;transition:all .3s ease}.navbar.scrolled{background-color:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.navbar .container{display:flex;justify-content:space-between;align-items:center;padding:var(--space-sm) var(--space-md)}.nav-brand{display:flex;align-items:center;gap:var(--space-sm);font-size:1.5rem;font-weight:700;color:var(--primary-color);letter-spacing:-.01em}.nav-logo{width:48px;height:48px;object-fit:contain}.nav-links{display:flex;gap:var(--space-lg)}.nav-links a{text-decoration:none;color:var(--text-color);font-weight:600;transition:color .3s ease;letter-spacing:.01em}.nav-links a:hover{color:var(--primary-color)}.mobile-menu-btn{display:none;background:none;font-size:1.5rem;color:var(--text-color)}.mobile-menu{display:none;flex-direction:column;background-color:var(--white);padding:var(--space-md);box-shadow:var(--shadow-md)}.mobile-menu.active{display:flex}.mobile-menu a{padding:var(--space-sm) 0;text-decoration:none;color:var(--text-color);font-weight:600;border-bottom:1px solid var(--medium-gray);letter-spacing:.01em}.mobile-menu a:last-child{border-bottom:none}.hero{padding:calc(var(--space-xxl) * 2) 0 var(--space-xxl);background:linear-gradient(135deg,#f9f9f9,#e8f5e9);margin-top:60px}.hero .container{display:flex;align-items:center;gap:var(--space-xl)}.hero-content{flex:1}.hero-subtitle{font-size:1.2rem;margin-bottom:var(--space-lg);color:var(--dark-gray);font-weight:400;line-height:1.6}.hero-buttons{display:flex;gap:var(--space-md);flex-wrap:wrap}.hero-image{flex:1}.browser-mockup{background-color:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}.browser-header{background-color:var(--light-gray);padding:var(--space-sm);display:flex;align-items:center}.browser-dots{display:flex;gap:var(--space-xs)}.dot{width:12px;height:12px;border-radius:50%}.dot.red{background-color:#ff5f57}.dot.yellow{background-color:#ffbd2e}.dot.green{background-color:#28ca42}.browser-content{padding:var(--space-md);text-align:center;position:relative;overflow:hidden}.screenshot-carousel{width:100%;height:100%;position:relative}.carousel-container{position:relative;width:100%;height:320px;overflow:hidden;border-radius:var(--radius-md)}.carousel-track{display:flex;transition:transform .5s ease-in-out;height:100%}.carousel-slide{min-width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;cursor:pointer;transition:transform .3s ease}.carousel-slide:hover{transform:scale(1.02)}.carousel-slide:hover .screenshot-img{box-shadow:0 0 20px #0000004d}.screenshot-img{width:100%;height:100%;object-fit:contain;border-radius:var(--radius-sm);background-color:var(--white);transition:all .3s ease;position:relative;cursor:zoom-in}.screenshot-img:after{content:"🔍 点击放大";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background-color:#000000b3;color:var(--white);padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-sm);font-size:.8rem;opacity:0;transition:opacity .3s ease;pointer-events:none;white-space:nowrap}.carousel-slide:hover .screenshot-img:after{opacity:1}.screenshot-caption{position:absolute;bottom:0;left:0;right:0;background-color:#000000b3;color:var(--white);padding:var(--space-xs) var(--space-sm);font-size:.9rem;text-align:center;border-bottom-left-radius:var(--radius-sm);border-bottom-right-radius:var(--radius-sm)}.carousel-prev,.carousel-next{position:absolute;top:50%;transform:translateY(-50%);background-color:#fffc;color:var(--primary-color);border:none;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1rem;transition:all .3s ease;z-index:10;box-shadow:var(--shadow-sm)}.carousel-prev:hover,.carousel-next:hover{background-color:var(--white);transform:translateY(-50%) scale(1.1);box-shadow:var(--shadow-md)}.carousel-prev{left:var(--space-sm)}.carousel-next{right:var(--space-sm)}.carousel-dots{position:absolute;bottom:var(--space-sm);left:0;right:0;display:flex;justify-content:center;gap:var(--space-xs);z-index:10}.carousel-dot{width:10px;height:10px;border-radius:50%;background-color:#ffffff80;border:none;cursor:pointer;padding:0;transition:all .3s ease}.carousel-dot:hover{background-color:#fffc;transform:scale(1.2)}.carousel-dot.active{background-color:var(--primary-color);transform:scale(1.2)}.features{padding:var(--space-xxl) 0;background-color:var(--bg-white)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--space-lg);margin-top:var(--space-xl)}.feature-card{background-color:var(--white);padding:var(--space-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:transform .3s ease;text-align:center}.feature-card h3{font-weight:600;margin-bottom:var(--space-sm)}.feature-card p{font-weight:400;line-height:1.6}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.feature-icon{width:70px;height:70px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto var(--space-md);font-size:1.8rem;color:var(--white)}.how-to-use{padding:var(--space-xxl) 0;background-color:var(--bg-light)}.steps{max-width:800px;margin:var(--space-xl) auto 0}.step{display:flex;align-items:flex-start;gap:var(--space-lg);margin-bottom:var(--space-xl);padding:var(--space-lg);background-color:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.step-number{width:50px;height:50px;background-color:var(--primary-color);color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:600;flex-shrink:0}.step-content{flex:1}.step-content h3{font-weight:600;margin-bottom:var(--space-sm)}.step-content p{font-weight:400;line-height:1.6}.download{padding:var(--space-xxl) 0;background-color:var(--bg-white)}.browser-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--space-lg);margin-top:var(--space-xl)}.browser-card{background-color:var(--white);padding:var(--space-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);text-align:center;transition:transform .3s ease}.browser-card h3{font-weight:600;margin-bottom:var(--space-sm)}.browser-card p{font-weight:400;line-height:1.6}.browser-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.browser-icon{font-size:3rem;color:var(--secondary-color);margin-bottom:var(--space-md)}.faq{padding:var(--space-xxl) 0;background-color:var(--bg-light)}.faq-list{max-width:800px;margin:var(--space-xl) auto 0}.faq-item{background-color:var(--white);border-radius:var(--radius-md);margin-bottom:var(--space-sm);overflow:hidden;box-shadow:var(--shadow-sm)}.faq-question{padding:var(--space-md);display:flex;justify-content:space-between;align-items:center;cursor:pointer;transition:background-color .3s ease}.faq-question:hover{background-color:var(--light-gray)}.faq-question h3{margin:0;font-size:1.1rem;font-weight:600}.faq-question i{transition:transform .3s ease}.faq-question i.rotate{transform:rotate(180deg)}.faq-answer{padding:0 var(--space-md);max-height:0;overflow:hidden;transition:all .3s ease}.faq-answer.open{padding:var(--space-md);max-height:500px}.footer{background-color:#2c3e50;color:var(--white);padding:var(--space-xxl) 0 var(--space-lg)}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--space-xl);margin-bottom:var(--space-xl)}.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:var(--space-sm)}.footer-logo{width:96px;height:96px;object-fit:contain;color:var(--primary-light)}.footer-brand span{font-size:1.8rem;font-weight:700;letter-spacing:-.01em;margin-top:var(--space-xs)}.footer-tagline{color:var(--medium-gray);margin:0}.footer-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:var(--space-xl)}.link-group h4{color:var(--white);margin-bottom:var(--space-md);font-size:1.1rem;font-weight:600}.link-group a{display:block;color:var(--medium-gray);text-decoration:none;margin-bottom:var(--space-xs);transition:color .3s ease}.link-group a:hover{color:var(--primary-light)}.footer-social h4{color:var(--white);margin-bottom:var(--space-md);font-size:1.1rem;font-weight:600}.social-icons{display:flex;gap:var(--space-md)}.social-icons a{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background-color:#ffffff1a;border-radius:50%;color:var(--white);text-decoration:none;transition:all .3s ease}.social-icons a:hover{background-color:var(--primary-color);transform:translateY(-3px)}.footer-bottom{text-align:center;padding-top:var(--space-lg);border-top:1px solid rgba(255,255,255,.1);color:var(--medium-gray);font-size:.9rem}.footer-bottom p{margin-bottom:var(--space-xs);color:var(--medium-gray)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:2000}.modal{background-color:var(--white);border-radius:var(--radius-lg);width:90%;max-width:500px;box-shadow:var(--shadow-lg)}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:var(--space-md);border-bottom:1px solid var(--medium-gray)}.modal-header h3{margin:0;color:var(--primary-dark);font-weight:600}.modal-close{background:none;font-size:1.2rem;color:var(--dark-gray)}.modal-close:hover{color:var(--text-color)}.modal-body{padding:var(--space-md)}.modal-body ul{list-style:none;margin-top:var(--space-md)}.modal-body li{display:flex;align-items:center;gap:var(--space-sm);margin-bottom:var(--space-sm);color:var(--text-light)}.modal-body li i{color:var(--primary-color)}.back-to-top{position:fixed;bottom:var(--space-lg);right:var(--space-lg);width:50px;height:50px;background-color:var(--primary-color);color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:var(--shadow-md);z-index:9999;opacity:.9;cursor:pointer;border:none;outline:none;transition:all .3s ease}.lightbox-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#000000e6;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .3s ease;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.lightbox-overlay.closing{animation:fadeOut .3s ease forwards}.lightbox-container{position:relative;width:90%;max-width:1200px;height:90vh;background-color:transparent;border-radius:var(--radius-lg);overflow:hidden;animation:slideIn .4s ease}.lightbox-close{position:absolute;top:var(--space-md);right:var(--space-md);background-color:#fff3;color:var(--white);border:none;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.2rem;transition:all .3s ease;z-index:1010}.lightbox-close:hover{background-color:#ffffff4d;transform:scale(1.1)}.lightbox-content{position:relative;width:100%;height:100%;overflow:hidden}.lightbox-track{display:flex;transition:transform .5s ease-in-out;height:100%}.lightbox-slide{min-width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative}.lightbox-img{width:100%;height:100%;object-fit:contain;border-radius:var(--radius-md);animation:zoomIn .4s ease;box-shadow:0 10px 40px #00000080;cursor:zoom-in;transition:transform .3s ease,cursor .3s ease}.lightbox-img.zoomed{transform:scale(1.5);cursor:zoom-out;object-fit:scale-down}.lightbox-img.zoomed+.lightbox-caption{opacity:0;transition:opacity .3s ease}.lightbox-caption{position:absolute;bottom:0;left:0;right:0;background-color:#000c;color:var(--white);padding:var(--space-sm) var(--space-md);font-size:1rem;text-align:center;border-bottom-left-radius:var(--radius-md);border-bottom-right-radius:var(--radius-md);transition:opacity .3s ease;z-index:1005}.lightbox-hint{position:absolute;top:var(--space-md);left:50%;transform:translate(-50%);background-color:#000000b3;color:var(--white);padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-sm);font-size:.9rem;text-align:center;z-index:1005;animation:fadeInHint .5s ease;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);box-shadow:0 2px 10px #0000004d}.lightbox-hint i{margin-right:var(--space-xs);font-size:.8rem}.lightbox-prev,.lightbox-next{position:absolute;top:50%;transform:translateY(-50%);background-color:#fff3;color:var(--white);border:none;width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.5rem;transition:all .3s ease;z-index:1010;box-shadow:var(--shadow-md)}.lightbox-prev:hover,.lightbox-next:hover{background-color:#ffffff4d;transform:translateY(-50%) scale(1.1)}.lightbox-prev{left:var(--space-lg)}.lightbox-next{right:var(--space-lg)}.lightbox-dots{position:absolute;bottom:var(--space-lg);left:0;right:0;display:flex;justify-content:center;gap:var(--space-sm);z-index:1010}.lightbox-dot{width:12px;height:12px;border-radius:50%;background-color:#ffffff80;border:none;cursor:pointer;padding:0;transition:all .3s ease}.lightbox-dot:hover{background-color:#fffc;transform:scale(1.3)}.lightbox-dot.active{background-color:var(--primary-color);transform:scale(1.3)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes zoomIn{0%{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}@keyframes zoomInDetail{0%{transform:scale(1)}to{transform:scale(1.5)}}@keyframes zoomOutDetail{0%{transform:scale(1.5)}to{transform:scale(1)}}@keyframes fadeInHint{0%{opacity:0;transform:translate(-50%) translateY(-10px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@keyframes slideIn{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}.back-to-top:hover{background-color:var(--primary-dark);transform:translateY(-2px);opacity:1;box-shadow:var(--shadow-lg)}@media (max-width: 768px){.carousel-container{height:280px}.carousel-prev,.carousel-next{width:32px;height:32px;font-size:.9rem}.screenshot-caption{font-size:.8rem;padding:4px 8px}h1{font-size:2.2rem;font-weight:700}h2{font-size:1.8rem;font-weight:700}.hero .container{flex-direction:column;text-align:center}.hero-buttons{justify-content:center}.nav-links{display:none}.mobile-menu-btn{display:block}.step{flex-direction:column;text-align:center;gap:var(--space-md)}.step-number{margin:0 auto}.back-to-top{bottom:var(--space-md);right:var(--space-md);width:45px;height:45px;font-size:1.1rem}.lightbox-container{width:95%;height:85vh}.lightbox-prev,.lightbox-next{width:40px;height:40px;font-size:1.2rem}.lightbox-prev{left:var(--space-md)}.lightbox-next{right:var(--space-md)}.lightbox-dots{bottom:var(--space-md)}.lightbox-caption{font-size:.9rem;padding:var(--space-xs) var(--space-sm)}}@media (max-width: 480px){.carousel-container{height:220px}.carousel-prev,.carousel-next{width:28px;height:28px;font-size:.8rem}.carousel-dot{width:8px;height:8px}h1{font-size:1.8rem;font-weight:700}h2{font-size:1.5rem;font-weight:700}.container{padding:0 var(--space-sm)}.hero-buttons{flex-direction:column;align-items:center}.btn-primary,.btn-secondary{width:100%;justify-content:center}.features-grid,.browser-options{grid-template-columns:1fr}.lightbox-container{width:98%;height:80vh}.lightbox-prev,.lightbox-next{width:35px;height:35px;font-size:1rem}.lightbox-prev{left:var(--space-sm)}.lightbox-next{right:var(--space-sm)}.lightbox-dots{bottom:var(--space-sm)}.lightbox-dot{width:10px;height:10px}.lightbox-caption{font-size:.8rem;padding:4px 8px}}