:root{--primary-color:#FFB6C1;--primary-light:#FFD1DC;--primary-dark:#FF69B4;--secondary-color:#E8B4CB;--accent-color:#FF69B4;--background-color:#FFF5F5;--surface-color:#FFFFFF;--text-primary:#4A4A4A;--text-secondary:#6B7280;--text-light:#9CA3AF;--border-color:#F3E8EE;--shadow-color:rgba(255, 182, 193, 0.2);--font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--font-family-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;--spacing-xs:4px;--spacing-sm:8px;--spacing-md:16px;--spacing-lg:24px;--spacing-xl:32px;--spacing-2xl:48px;--spacing-3xl:64px;--radius-sm:6px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--shadow-sm:0 1px 2px rgba(0, 0, 0, 0.05);--shadow-md:0 4px 6px -1px rgba(0, 0, 0, 0.1),0 2px 4px -1px rgba(0, 0, 0, 0.06);--shadow-lg:0 10px 15px -3px rgba(0, 0, 0, 0.1),0 4px 6px -2px rgba(0, 0, 0, 0.05);--shadow-xl:0 20px 25px -5px rgba(0, 0, 0, 0.1),0 10px 10px -5px rgba(0, 0, 0, 0.04);--transition-fast:0.15s ease;--transition-normal:0.3s ease;--transition-slow:0.5s ease}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-family),var(--font-family-cn);color:var(--text-primary);background-color:var(--background-color);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background-color:rgba(255,255,255,.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);transition:var(--transition-normal)}.navbar .container{display:flex;align-items:center;justify-content:space-between;height:64px}.navbar-brand{display:flex;align-items:center;gap:var(--spacing-sm);font-size:1.25rem;font-weight:600;color:var(--primary-dark);text-decoration:none}.navbar-brand img{height:32px;width:auto}.navbar-nav{display:flex;align-items:center;gap:var(--spacing-lg);list-style:none}.navbar-nav a{color:var(--text-secondary);text-decoration:none;font-weight:500;transition:var(--transition-fast);position:relative;white-space:nowrap}.navbar-nav a:hover{color:var(--primary-dark)}.navbar-nav a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background-color:var(--primary-dark);transition:var(--transition-fast)}.navbar-nav a:hover::after{width:100%}.controls{display:flex;align-items:center;gap:var(--spacing-md)}.mobile-menu-btn{display:none;flex-direction:column;justify-content:space-around;width:24px;height:24px;background:0 0;border:none;cursor:pointer;padding:0;z-index:10}.mobile-menu-btn span{width:24px;height:2px;background-color:var(--text-primary);border-radius:1px;transition:var(--transition-fast);transform-origin:center}.mobile-menu-btn.active span:first-child{transform:rotate(45deg) translate(5px,5px)}.mobile-menu-btn.active span:nth-child(2){opacity:0}.mobile-menu-btn.active span:nth-child(3){transform:rotate(-45deg) translate(7px,-6px)}@media (max-width:768px){.mobile-menu-btn{display:flex}.navbar-nav{position:fixed;top:64px;left:0;right:0;background-color:var(--surface-color);border-bottom:1px solid var(--border-color);flex-direction:column;padding:var(--spacing-lg);gap:var(--spacing-lg);transform:translateY(-100%);opacity:0;visibility:hidden;transition:var(--transition-normal)}.navbar-nav.active{transform:translateY(0);opacity:1;visibility:visible}.navbar-nav a{font-size:1.125rem;padding:var(--spacing-sm) 0}}.theme-switcher{display:flex;align-items:center;gap:var(--spacing-xs);padding:clamp(3px,.5vw,6px) clamp(6px,.8vw,10px);border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--surface-color);cursor:pointer;transition:var(--transition-fast)}.theme-switcher:hover{border-color:var(--primary-color)}.theme-option{width:clamp(16px,1.6vw,24px);height:clamp(16px,1.6vw,24px);border-radius:50%;border:2px solid transparent;transition:var(--transition-fast)}.theme-option:hover{transform:scale(1.1)}.theme-option.active{border-color:var(--text-primary);box-shadow:0 0 0 2px var(--background-color)}.language-switcher{position:relative}.language-btn{display:flex;align-items:center;gap:clamp(2px,.4vw,4px);padding:clamp(2px,.4vw,4px) clamp(6px,.8vw,8px);border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--surface-color);cursor:pointer;font-size:clamp(.75rem, .9vw, .875rem);color:var(--text-secondary);transition:var(--transition-fast);white-space:nowrap;line-height:1.4}.language-icon{font-size:clamp(.875rem, 1.1vw, 1rem);line-height:1}.language-btn:hover{border-color:var(--primary-color);color:var(--text-primary)}.language-dropdown{position:absolute;top:100%;right:0;margin-top:var(--spacing-xs);background:var(--surface-color);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);min-width:120px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:var(--transition-fast)}.language-switcher:hover .language-dropdown{opacity:1;visibility:visible;transform:translateY(0)}.language-option{display:block;padding:var(--spacing-sm) var(--spacing-md);color:var(--text-secondary);text-decoration:none;transition:var(--transition-fast)}.language-option:hover{background-color:var(--background-color);color:var(--primary-dark)}.language-option.active{color:var(--primary-dark);font-weight:500}.hero{padding:calc(64px + var(--spacing-3xl)) 0 var(--spacing-3xl);text-align:center;background:linear-gradient(135deg,var(--background-color) 0,var(--primary-light) 100%);position:relative;overflow:hidden}.hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 80%,var(--primary-light) 0,transparent 50%),radial-gradient(circle at 80% 20%,var(--secondary-color) 0,transparent 50%);opacity:.3;z-index:0}.hero .container{position:relative;z-index:1}.hero h1{font-size:3.5rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-md);line-height:1.2;letter-spacing:-.02em}.hero .subtitle{font-size:1.25rem;color:var(--text-secondary);max-width:600px;margin:0 auto var(--spacing-xl);line-height:1.6}.hero-buttons{display:flex;justify-content:center;gap:var(--spacing-md);margin-bottom:var(--spacing-xl)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-xl);border-radius:var(--radius-md);font-weight:600;font-size:1rem;text-decoration:none;transition:var(--transition-normal);cursor:pointer;border:none;outline:0}.btn-primary{background:linear-gradient(135deg,var(--primary-color) 0,var(--primary-dark) 100%);color:#fff;box-shadow:0 4px 14px var(--shadow-color)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px var(--shadow-color)}.btn-secondary{background:var(--surface-color);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{border-color:var(--primary-color);color:var(--primary-dark)}.btn-large{padding:var(--spacing-lg) var(--spacing-2xl);font-size:1.125rem}.stats{display:flex;justify-content:center;gap:var(--spacing-2xl);margin-top:var(--spacing-xl)}.stat-item{text-align:center;white-space:nowrap}.stat-number{font-size:2rem;font-weight:700;color:var(--primary-dark);display:block;white-space:nowrap}.stat-label{font-size:.875rem;color:var(--text-secondary);margin-top:var(--spacing-xs);white-space:nowrap}.features{padding:var(--spacing-3xl) 0;background-color:var(--surface-color)}.section-header{text-align:center;margin-bottom:var(--spacing-2xl)}.section-header h2{font-size:2.5rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-md)}.section-header p{font-size:1.125rem;color:var(--text-secondary);max-width:600px;margin:0 auto}.features-showcase{display:flex;gap:var(--spacing-2xl);align-items:flex-start}.features-sidebar{flex:0 0 360px;display:flex;flex-direction:column;gap:var(--spacing-md);position:sticky;top:100px}.sidebar-card{background:var(--surface-color);border:2px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-lg);cursor:pointer;transition:var(--transition-normal)}.sidebar-card:hover{border-color:var(--primary-color);transform:translateX(4px)}.sidebar-card.active{border-color:var(--primary-color);background:linear-gradient(135deg,var(--background-color) 0,var(--primary-light) 100%);box-shadow:var(--shadow-lg)}.sidebar-header{display:flex;align-items:center;gap:var(--spacing-md)}.sidebar-icon{font-size:2rem;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--background-color);border-radius:var(--radius-md);flex-shrink:0}.sidebar-content h3{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-xs)}.sidebar-content p{font-size:.8rem;color:var(--text-secondary);line-height:1.4}.feature-tags{display:flex;flex-wrap:nowrap;gap:var(--spacing-sm);margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--border-color);overflow:hidden;max-height:0;opacity:0;transform:translateY(-8px);transition:max-height .4s,opacity .3s,transform .3s,margin-top .4s,padding-top .4s,border-top-width .4s;border-top-width:0;margin-top:0;padding-top:0}.sidebar-card.active .feature-tags{max-height:200px;opacity:1;transform:translateY(0);border-top-width:1px;margin-top:var(--spacing-md);padding-top:var(--spacing-md)}.tag{padding:var(--spacing-xs) var(--spacing-md);background:var(--primary-light);border:1px solid var(--primary-color);border-radius:var(--radius-xl);font-size:.75rem;color:var(--primary-dark);font-weight:500;transition:var(--transition-fast);opacity:0;transform:translateY(10px) scale(.9);animation:none;white-space:nowrap}.sidebar-card.active .tag{opacity:1;transform:translateY(0) scale(1)}.sidebar-card.active .tag:first-child{animation:.35s 50ms both bubbleIn}.sidebar-card.active .tag:nth-child(2){animation:.35s .12s both bubbleIn}.sidebar-card.active .tag:nth-child(3){animation:.35s .19s both bubbleIn}.sidebar-card.active .tag:nth-child(4){animation:.35s .26s both bubbleIn}@keyframes bubbleIn{0%{opacity:0;transform:translateY(10px) scale(.85)}60%{opacity:1;transform:translateY(-3px) scale(1.05)}100%{opacity:1;transform:translateY(0) scale(1)}}.tag:hover{background:var(--primary-color);color:#fff;transform:translateY(-2px) scale(1.05);box-shadow:0 3px 8px var(--shadow-color)}.features-display{flex:1;min-height:500px}.display-panel{display:none;animation:.5s fadeIn}.display-panel.active{display:flex;flex-direction:column;gap:var(--spacing-xl)}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.display-image{width:100%;height:400px;border-radius:var(--radius-lg);overflow:hidden;background:linear-gradient(135deg,var(--background-color) 0,var(--primary-light) 100%);border:1px solid var(--border-color);box-shadow:var(--shadow-lg)}.display-image img{width:100%;height:100%;object-fit:cover;transition:var(--transition-normal)}.display-image img:hover{transform:scale(1.05)}.image-placeholder{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-md);background:linear-gradient(135deg,var(--primary-light) 0,var(--primary-color) 100%)}.mac-window{background:var(--surface-color);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-xl);border:1px solid var(--border-color)}.window-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md) var(--spacing-lg);background:linear-gradient(180deg,var(--background-color) 0,var(--surface-color) 100%);border-bottom:1px solid var(--border-color)}.window-dots{display:flex;gap:8px}.dot{width:12px;height:12px;border-radius:50%}.dot.red{background:#ff5f57}.dot.yellow{background:#ffbd2e}.dot.green{background:#28ca41}.window-title{font-size:.85rem;font-weight:500;color:var(--text-secondary)}.window-placeholder{width:52px}.window-content{padding:var(--spacing-xl);min-height:350px;display:flex;flex-direction:column;position:relative;overflow:hidden}.display-card{background:var(--surface-color);border-radius:var(--radius-lg);padding:var(--spacing-2xl);flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-lg)}.display-card-header{display:flex;align-items:center;gap:var(--spacing-md)}.display-card-icon{font-size:2.5rem;width:60px;height:60px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary-light) 0,var(--primary-color) 100%);border-radius:var(--radius-md)}.display-card-header h3{font-size:1.5rem;font-weight:600;color:var(--text-primary)}.display-card-desc{font-size:1rem;color:var(--text-secondary);line-height:1.6}.display-card-features{display:flex;flex-direction:column;gap:var(--spacing-sm);margin-top:auto}.display-feature-item{display:flex;align-items:center;gap:var(--spacing-sm);font-size:.9rem;color:var(--text-primary)}.feature-dot{width:8px;height:8px;background:var(--primary-color);border-radius:50%;flex-shrink:0}.feature-dot.pulse{animation:2s ease-in-out infinite pulse}@keyframes pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 var(--primary-color)}50%{opacity:.7;box-shadow:0 0 0 6px transparent}}.display-action{margin-top:auto;padding-top:var(--spacing-lg);border-top:1px solid var(--border-color);text-align:center}.display-btn{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-md) var(--spacing-xl);font-size:1rem;font-weight:600;transition:var(--transition-normal)}.display-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.placeholder-icon{font-size:4rem;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.2)}.placeholder-text{font-size:1.25rem;font-weight:600;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.2)}.display-info{text-align:center;padding:var(--spacing-xl);background:var(--surface-color);border-radius:var(--radius-lg);border:1px solid var(--border-color)}.display-info h3{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.display-info p{font-size:1rem;color:var(--text-secondary);margin-bottom:var(--spacing-xl);line-height:1.6}.display-info .btn{padding:var(--spacing-md) var(--spacing-2xl);font-size:1rem}.content-icon{font-size:3rem;width:80px;height:80px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary-light) 0,var(--primary-color) 100%);border-radius:var(--radius-lg);flex-shrink:0}.content-header h3{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.content-header p{font-size:1rem;color:var(--text-secondary);line-height:1.6}.content-features{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-lg);margin-bottom:var(--spacing-2xl)}.content-feature{display:flex;align-items:flex-start;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--surface-color);border-radius:var(--radius-md);border:1px solid var(--border-color);transition:var(--transition-normal)}.content-feature:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--primary-color)}.content-feature .feature-icon{font-size:1.5rem;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary-light) 0,var(--primary-color) 100%);border-radius:var(--radius-md);flex-shrink:0}.feature-info h4{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-xs)}.feature-info p{font-size:.85rem;color:var(--text-secondary);line-height:1.5}.content-cta{text-align:center;padding:var(--spacing-xl);background:linear-gradient(135deg,var(--background-color) 0,var(--primary-light) 100%);border-radius:var(--radius-lg);border:1px solid var(--border-color)}.content-cta .btn{padding:var(--spacing-md) var(--spacing-2xl);font-size:1rem}.features-nav{display:flex;justify-content:center;gap:var(--spacing-md);margin-bottom:var(--spacing-2xl);flex-wrap:wrap}.nav-link{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-xl);background:var(--surface-color);border:2px solid var(--border-color);border-radius:var(--radius-xl);text-decoration:none;color:var(--text-secondary);font-weight:600;transition:var(--transition-normal)}.nav-link:hover{border-color:var(--primary-color);color:var(--primary-dark);transform:translateY(-2px)}.nav-link.active{background:linear-gradient(135deg,var(--primary-color) 0,var(--primary-dark) 100%);color:#fff;border-color:var(--primary-dark);box-shadow:0 4px 14px var(--shadow-color)}.nav-icon{font-size:1.25rem}.feature-section{padding:var(--spacing-3xl) 0;background-color:var(--surface-color);border-bottom:1px solid var(--border-color)}.feature-section:nth-child(2n){background-color:var(--background-color)}.feature-section-header{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-lg);margin-bottom:var(--spacing-lg);text-align:center}.section-icon{font-size:1.2em;vertical-align:baseline}.section-info{text-align:center}.section-info h2{font-size:2rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.section-info p{font-size:1.125rem;color:var(--text-secondary);line-height:1.6}.feature-showcase{display:flex;gap:var(--spacing-2xl);align-items:flex-start}.feature-image{flex:0 0 400px;position:sticky;top:100px}.image-container{width:100%;height:350px;border-radius:var(--radius-lg);overflow:hidden;background:linear-gradient(135deg,var(--background-color) 0,var(--primary-light) 100%);border:1px solid var(--border-color);box-shadow:var(--shadow-lg)}.feature-img{width:100%;height:100%;object-fit:cover;transition:var(--transition-normal)}.feature-img:hover{transform:scale(1.05)}.image-fallback{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-md);background:linear-gradient(135deg,var(--primary-light) 0,var(--primary-color) 100%)}.fallback-icon{font-size:4rem;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.2)}.fallback-text{font-size:1.25rem;font-weight:600;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.2)}.feature-list{flex:1;width:100%;display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-lg)}.feature-item{display:flex;flex-wrap:wrap;align-items:center;gap:var(--spacing-md);padding:var(--spacing-xl);background:var(--surface-color);border-radius:var(--radius-lg);border:1px solid var(--border-color);transition:var(--transition-normal)}.feature-item:hover{transform:translateX(8px);box-shadow:var(--shadow-lg);border-color:var(--primary-color)}.feature-icon{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary-light) 0,var(--primary-color) 100%);border-radius:var(--radius-md);flex-shrink:0}.feature-content{flex:1}.feature-content h3{font-size:1.125rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-xs)}.feature-content p{font-size:.9rem;color:var(--text-secondary);line-height:1.5}.feature-btn{padding:var(--spacing-sm) var(--spacing-lg);background:var(--primary-color);color:#fff;border-radius:var(--radius-md);text-decoration:none;font-weight:600;font-size:.875rem;transition:var(--transition-normal);white-space:nowrap;width:100%;text-align:center;margin-top:var(--spacing-xs)}.feature-btn:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}.feature-cta{text-align:center;margin-top:var(--spacing-2xl);padding:var(--spacing-2xl);background:linear-gradient(135deg,var(--background-color) 0,var(--primary-light) 100%);border-radius:var(--radius-lg);border:1px solid var(--border-color)}.feature-cta h3{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-md)}.feature-cta p{font-size:1rem;color:var(--text-secondary);margin-bottom:var(--spacing-xl);max-width:500px;margin-left:auto;margin-right:auto}.feature-module{background:var(--surface-color);border-radius:var(--radius-lg);border:1px solid var(--border-color);overflow:hidden;box-shadow:var(--shadow-md)}.module-header{display:flex;align-items:center;gap:var(--spacing-lg);padding:var(--spacing-xl);background:linear-gradient(135deg,var(--background-color) 0,var(--primary-light) 100%);border-bottom:1px solid var(--border-color)}.module-icon{font-size:3rem;width:80px;height:80px;display:flex;align-items:center;justify-content:center;background:var(--surface-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.module-info h3{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.module-info p{font-size:1rem;color:var(--text-secondary);line-height:1.6}.feature-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-lg);padding:var(--spacing-xl)}.feature-item{display:flex;align-items:flex-start;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--background-color);border-radius:var(--radius-md);border:1px solid var(--border-color);transition:var(--transition-normal)}.feature-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-color)}.feature-icon-small{font-size:1.5rem;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary-light) 0,var(--primary-color) 100%);border-radius:var(--radius-md);flex-shrink:0}.feature-details h4{font-size:1.125rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-xs)}.feature-details p{font-size:.9rem;color:var(--text-secondary);line-height:1.5}.feature-card{background:var(--surface-color);border-radius:var(--radius-lg);padding:var(--spacing-xl);border:1px solid var(--border-color);transition:var(--transition-normal);position:relative;overflow:hidden}.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary-color) 0,var(--primary-dark) 100%);transform:scaleX(0);transform-origin:left;transition:var(--transition-normal)}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl)}.feature-card:hover::before{transform:scaleX(1)}.feature-icon{width:64px;height:64px;border-radius:var(--radius-md);background:linear-gradient(135deg,var(--primary-light) 0,var(--primary-color) 100%);display:flex;align-items:center;justify-content:center;font-size:1.75rem;margin-bottom:var(--spacing-lg)}.feature-card h3{font-size:1.25rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-md)}.feature-card p{color:var(--text-secondary);line-height:1.6}.download{padding:var(--spacing-3xl) 0;background:linear-gradient(135deg,var(--background-color) 0,var(--primary-light) 100%);text-align:center}.download-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-xl);margin-top:var(--spacing-2xl)}.download-card{background:var(--surface-color);border-radius:var(--radius-lg);padding:var(--spacing-xl);border:1px solid var(--border-color);transition:var(--transition-normal);position:relative}.download-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);border-color:var(--primary-color)}.download-card.recommended{border-color:var(--primary-color);box-shadow:0 0 0 2px var(--primary-light)}.download-icon{font-size:3rem;margin-bottom:var(--spacing-lg)}.download-card h3{font-size:1.25rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.download-card .version{font-size:.875rem;color:var(--text-secondary);margin-bottom:var(--spacing-lg)}.download-card .btn{width:100%}.macos-buttons{display:flex;flex-direction:column;gap:var(--spacing-sm)}.macos-buttons .btn{width:100%}.download-note{margin-top:var(--spacing-xl);font-size:1rem;color:var(--text-secondary);font-style:italic}.recommended-badge{position:absolute;top:-10px;right:-10px;background:var(--primary-color);color:#fff;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600;box-shadow:var(--shadow-md)}.testimonials{padding:var(--spacing-3xl) 0;background-color:var(--surface-color)}.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-xl)}.testimonial-card{background:var(--background-color);border-radius:var(--radius-lg);padding:var(--spacing-xl);border:1px solid var(--border-color)}.testimonial-text{font-size:1rem;color:var(--text-primary);line-height:1.6;margin-bottom:var(--spacing-lg);font-style:italic}.testimonial-author{display:flex;align-items:center;gap:var(--spacing-md)}.author-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary-light) 0,var(--primary-color) 100%);display:flex;align-items:center;justify-content:center;font-weight:600;color:#fff}.author-info h4{font-size:1rem;font-weight:600;color:var(--text-primary)}.author-info p{font-size:.875rem;color:var(--text-secondary)}.advantages{padding:var(--spacing-3xl) 0;background:linear-gradient(135deg,var(--background-color) 0,var(--primary-light) 100%)}.advantages-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-xl)}.advantage-item{text-align:center;padding:var(--spacing-xl)}.advantage-icon{font-size:2.5rem;margin-bottom:var(--spacing-lg)}.advantage-item h3{font-size:1.25rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.advantage-item p{font-size:.875rem;color:var(--text-secondary)}.footer{background-color:var(--text-primary);color:var(--text-light);padding:var(--spacing-2xl) 0 var(--spacing-xl)}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-xl);margin-bottom:var(--spacing-2xl)}.footer-section h4{color:#fff;font-size:1rem;font-weight:600;margin-bottom:var(--spacing-lg)}.footer-section a,.footer-section p{color:var(--text-light);font-size:.875rem;line-height:1.6;text-decoration:none;display:block;margin-bottom:var(--spacing-sm);transition:var(--transition-fast)}.footer-section a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:var(--spacing-xl);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--spacing-md)}.footer-beian,.footer-bottom-row{display:flex;align-items:center;gap:var(--spacing-md);flex-wrap:wrap}.footer-beian a{font-size:.875rem;color:var(--text-light);text-decoration:none}.footer-bottom p{font-size:.875rem;color:var(--text-light)}.footer-tags{display:flex;flex-wrap:wrap;gap:var(--spacing-sm)}.footer-tag{padding:var(--spacing-xs) var(--spacing-sm);background:rgba(255,255,255,.1);border-radius:var(--radius-sm);font-size:.75rem;color:var(--text-light)}.back-to-top{position:fixed;bottom:30px;right:30px;width:50px;height:50px;border-radius:50%;background:var(--primary-color);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.25rem;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(20px);transition:var(--transition-normal);z-index:999}.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}.back-to-top:hover{background:var(--primary-dark);transform:translateY(-2px)}@media (max-width:768px){.hero h1{font-size:2.5rem}.hero .subtitle{font-size:1rem}.hero-buttons{flex-direction:column;align-items:center}.section-header h2{font-size:2rem}.footer-bottom{flex-direction:column;text-align:center}.back-to-top{bottom:20px;right:20px;width:44px;height:44px}}@media (max-width:480px){.hero h1{font-size:2rem}.container{padding:0 var(--spacing-md)}}.page-content{padding-top:120px;padding-bottom:var(--spacing-3xl);min-height:80vh}.page-content h1{font-size:2.5rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-2xl);text-align:center}.docs-section{margin-bottom:var(--spacing-2xl)}.docs-section h2{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing-sm);border-bottom:2px solid var(--primary-color)}.doc-card{background:var(--surface-color);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-md);transition:var(--transition-normal)}.doc-card:hover{border-color:var(--primary-color);box-shadow:var(--shadow-md)}.doc-card h3{font-size:1.1rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.doc-card p{font-size:.95rem;color:var(--text-secondary);line-height:1.6}.faq-list{max-width:800px;margin:0 auto}.faq-item{background:var(--surface-color);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-md);transition:var(--transition-normal)}.faq-item:hover{border-color:var(--primary-color);box-shadow:var(--shadow-md)}.faq-item h3{font-size:1rem;font-weight:600;color:var(--primary-color);margin-bottom:var(--spacing-sm)}.faq-item p{font-size:.95rem;color:var(--text-secondary);line-height:1.6}.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-xl);margin-bottom:var(--spacing-2xl)}.contact-card{background:var(--surface-color);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-xl);text-align:center;transition:var(--transition-normal)}.contact-card:hover{border-color:var(--primary-color);box-shadow:var(--shadow-md);transform:translateY(-4px)}.contact-icon{font-size:2.5rem;margin-bottom:var(--spacing-md)}.contact-card h3{font-size:1.1rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.contact-card p{font-size:.9rem;color:var(--text-secondary);margin-bottom:var(--spacing-xs)}.contact-form-section{max-width:600px;margin:0 auto}.contact-form-section h2{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-xl);text-align:center}.form-group{margin-bottom:var(--spacing-lg)}.form-group label{display:block;font-size:.9rem;font-weight:500;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.form-group input,.form-group select,.form-group textarea{width:100%;padding:var(--spacing-md);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:.95rem;color:var(--text-primary);background:var(--surface-color);transition:var(--transition-normal)}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:0;border-color:var(--primary-color);box-shadow:0 0 0 3px var(--shadow-color)}.form-group textarea{resize:vertical;min-height:120px}.feedback-intro{text-align:center;font-size:1rem;color:var(--text-secondary);margin-bottom:var(--spacing-2xl);max-width:600px;margin-left:auto;margin-right:auto}.feedback-form{max-width:600px;margin:0 auto}.legal-content{max-width:800px;margin:0 auto;background:var(--surface-color);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-2xl)}.legal-content h2{font-size:1.25rem;font-weight:600;color:var(--text-primary);margin-top:var(--spacing-xl);margin-bottom:var(--spacing-md)}.legal-content h2:first-of-type{margin-top:var(--spacing-lg)}.legal-content p{font-size:.95rem;color:var(--text-secondary);line-height:1.8;margin-bottom:var(--spacing-md)}.legal-content ul{padding-left:var(--spacing-xl);margin-bottom:var(--spacing-md)}.legal-content li{font-size:.95rem;color:var(--text-secondary);line-height:1.8;margin-bottom:var(--spacing-xs)}.modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.5);z-index:10000;align-items:center;justify-content:center;backdrop-filter:blur(4px)}.modal-content{background:var(--surface-color);border-radius:var(--radius-xl);padding:var(--spacing-2xl);max-width:450px;width:90%;text-align:center;box-shadow:var(--shadow-xl);animation:.3s modalSlideIn}@keyframes modalSlideIn{from{opacity:0;transform:translateY(-20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.modal-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.modal-content h3{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-md)}.modal-content p{font-size:.95rem;color:var(--text-secondary);line-height:1.6;margin-bottom:var(--spacing-sm)}.modal-email{font-size:1.1rem;font-weight:600;color:var(--primary-color);margin:var(--spacing-md) 0;padding:var(--spacing-md);background:var(--primary-light);border-radius:var(--radius-md);user-select:all}.modal-hint{font-size:.85rem;color:var(--text-light);margin-bottom:var(--spacing-xl)}.modal-close-btn{min-width:120px}.carousel-arrow{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;background:var(--surface-color);border:1px solid var(--border-color);border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:10;transition:var(--transition-normal);box-shadow:var(--shadow-md);color:var(--text-primary)}.carousel-arrow:hover{background:var(--primary-color);color:#fff;border-color:var(--primary-color);transform:translateY(-50%) scale(1.1)}.carousel-prev{left:10px}.carousel-next{right:10px}.carousel-arrow svg{width:20px;height:20px}@media (max-width:768px){.carousel-arrow{width:36px;height:36px}.carousel-arrow svg{width:18px;height:18px}.carousel-prev{left:5px}.carousel-next{right:5px}}@media (max-width:1024px){.carousel-arrow{top:50%;transform:translateY(-50%)}.carousel-prev{left:10px}.carousel-next{right:10px}}