*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #000000;--primary-dark: #1a1a1a;--primary-light: #3d3d3d;--secondary: #2d2d2d;--accent: #4a4a4a;--text-primary: #1a1a1a;--text-secondary: #666666;--bg-primary: #ffffff;--bg-secondary: #f5f5f5;--border: #e0e0e0;--shadow: rgba(0, 0, 0, .08);--gradient-light: #fafafa;--gradient-dark: #e8e8e8}html{scroll-behavior:smooth}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text-primary);background:var(--bg-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:1200px;margin:0 auto;padding:0 24px}.navbar{position:fixed;top:0;left:0;right:0;background:#fffc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);z-index:1000;padding:16px 0}.nav-content{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:8px;font-size:24px;font-weight:800;color:#000;text-decoration:none}.logo-icon{width:32px;height:32px;object-fit:contain}.nav-links{display:flex;align-items:center;gap:32px}.nav-link{color:var(--text-secondary);text-decoration:none;font-weight:500;transition:color .3s}.nav-link:hover{color:#000}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:12px;font-weight:600;text-decoration:none;transition:all .3s;border:none;cursor:pointer;font-size:16px}.btn-icon{width:20px;height:20px}.btn-primary{background:linear-gradient(135deg,#000,#2d2d2d);color:#fff;box-shadow:0 4px 12px #0003}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0000004d;background:linear-gradient(135deg,#1a1a1a,#3d3d3d)}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border:2px solid var(--border)}.btn-secondary:hover{border-color:#000;color:#000}.btn-outline{background:transparent;color:#000;border:2px solid #000000}.btn-outline:hover{background:#000;color:#fff}.btn-large{padding:16px 32px;font-size:18px}.hero{position:relative;padding:140px 0 100px;overflow:hidden;background:linear-gradient(135deg,#fff,#f5f5f5,#ebebeb)}.hero-background{position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 50%,rgba(0,0,0,.03) 0%,transparent 50%),radial-gradient(circle at 80% 50%,rgba(0,0,0,.03) 0%,transparent 50%);z-index:0}.hero-content{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.hero-title{font-size:56px;font-weight:900;line-height:1.2;margin-bottom:24px}.gradient-text{background:linear-gradient(135deg,#000,#4a4a4a);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:20px;color:var(--text-secondary);margin-bottom:32px}.hero-features{display:flex;gap:24px;margin-bottom:40px}.hero-feature{display:flex;align-items:center;gap:8px;padding:8px 16px;background:#fff;border-radius:8px;box-shadow:0 2px 8px var(--shadow);font-weight:500}.feature-icon{font-size:20px}.hero-buttons{display:flex;gap:16px;margin-bottom:24px}.hero-info{color:var(--text-secondary);font-size:14px}.hero-info a{color:#000;text-decoration:none;font-weight:600}.hero-logo-display{display:flex;align-items:center;justify-content:center;padding:60px;background:#fff;border-radius:24px;box-shadow:0 20px 60px #00000026,0 10px 30px #0000001a,0 5px 15px #00000014;animation:float 6s ease-in-out infinite;transition:all .4s ease}.hero-logo-display:hover{transform:translateY(-10px);box-shadow:0 30px 80px #0003,0 15px 40px #00000026,0 8px 20px #0000001a}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}.hero-logo{width:100%;max-width:350px;height:auto;object-fit:contain;filter:drop-shadow(0 15px 40px rgba(255,0,0,.15));animation:logoGlow 3s ease-in-out infinite;transition:all .4s ease}.hero-logo-display:hover .hero-logo{filter:drop-shadow(0 20px 50px rgba(255,0,0,.25));transform:scale(1.05)}@keyframes logoGlow{0%,to{filter:drop-shadow(0 15px 40px rgba(255,0,0,.15))}50%{filter:drop-shadow(0 20px 50px rgba(255,0,0,.25))}}.hero-image{display:flex;align-items:center;justify-content:center}.hero-video{width:100%;max-width:640px;height:auto;border-radius:20px;background:#000;box-shadow:0 20px 60px #00000040;outline:none}@media (max-width: 1024px){.hero-video{max-width:100%}}.features{padding:100px 0;background:var(--bg-primary)}.section-header{text-align:center;margin-bottom:64px}.section-title{font-size:42px;font-weight:800;margin-bottom:16px}.section-subtitle{font-size:18px;color:var(--text-secondary)}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.feature-card{background:#fff;padding:32px;border-radius:16px;border:1px solid var(--border);transition:all .3s}.feature-card:hover{transform:translateY(-8px);box-shadow:0 12px 32px #0000001f;border-color:#000}.feature-icon-box{width:56px;height:56px;background:linear-gradient(135deg,#000,#2d2d2d);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}.feature-icon-box svg{width:28px;height:28px;color:#fff}.feature-title{font-size:20px;font-weight:700;margin-bottom:12px}.feature-description{color:var(--text-secondary);line-height:1.7}.showcase{padding:100px 0;background:linear-gradient(135deg,#fafafa,#f0f0f0)}.showcase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}.showcase-item{text-align:center}.showcase-preview{background:#fff;border-radius:16px;padding:32px;margin-bottom:20px;box-shadow:0 4px 16px var(--shadow)}.preview-box{position:relative;height:200px;background:linear-gradient(135deg,#f5f5f5,#e8e8e8);border-radius:12px;overflow:hidden}.preview-label{position:absolute;top:12px;left:12px;background:#fff;padding:6px 12px;border-radius:6px;font-size:12px;font-weight:600;box-shadow:0 2px 8px var(--shadow)}.preview-animation{position:absolute;top:0;right:0;bottom:0;left:0}.preview-animation.zoom{background:radial-gradient(circle at center,rgba(0,0,0,.2) 0%,transparent 50%);animation:zoomIn 3s ease-in-out infinite}@keyframes zoomIn{0%,to{transform:scale(.8);opacity:.5}50%{transform:scale(1.2);opacity:1}}.preview-animation.spotlight{background:radial-gradient(circle at 50% 50%,transparent 30%,rgba(0,0,0,.5) 70%);animation:spotlightMove 4s ease-in-out infinite}@keyframes spotlightMove{0%,to{background-position:30% 30%}50%{background-position:70% 70%}}.preview-animation.gradient{background:linear-gradient(135deg,#1a1a1a,#3d3d3d,#5a5a5a);animation:gradientShift 5s ease-in-out infinite}@keyframes gradientShift{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}.showcase-item h4{font-size:20px;font-weight:700;margin-bottom:8px}.showcase-item p{color:var(--text-secondary)}.pricing{padding:100px 0;background:var(--bg-primary)}.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.pricing-card{position:relative;background:#fff;border:2px solid var(--border);border-radius:20px;padding:40px;transition:all .3s}.pricing-card:hover{transform:translateY(-8px);box-shadow:0 12px 32px var(--shadow)}.pricing-card.featured{border-color:#000;box-shadow:0 8px 24px #00000026}.pricing-badge{position:absolute;top:-12px;right:32px;background:linear-gradient(135deg,#000,#2d2d2d);color:#fff;padding:6px 16px;border-radius:20px;font-size:14px;font-weight:600}.pricing-header h3{font-size:24px;font-weight:700;margin-bottom:8px}.pricing-description{color:var(--text-secondary);margin-bottom:24px}.pricing-price{margin-bottom:32px}.price{font-size:48px;font-weight:900;background:linear-gradient(135deg,#000,#4a4a4a);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.period{color:var(--text-secondary);font-size:16px}.pricing-features{list-style:none;margin-bottom:32px}.pricing-features li{padding:12px 0;border-bottom:1px solid var(--border);color:var(--text-secondary)}.pricing-features li:last-child{border-bottom:none}.download{padding:100px 0;background:linear-gradient(135deg,#000,#2d2d2d);color:#fff;text-align:center}.download-title{font-size:42px;font-weight:800;margin-bottom:16px}.download-subtitle{font-size:18px;opacity:.9;margin-bottom:40px}.download-buttons{display:flex;justify-content:center;gap:16px;margin-bottom:24px}.download .btn-primary{background:#fff;color:#000}.download .btn-primary:hover{background:#f5f5f5}.download-info{opacity:.8;font-size:14px}.footer{background:#1a1a1a;color:#fff;padding:60px 0 24px}.footer-content{display:grid;grid-template-columns:2fr 3fr;gap:60px;margin-bottom:40px}.footer-brand .logo{color:#fff}.footer-brand p{opacity:.7;margin-top:12px}.footer-links{display:grid;grid-template-columns:repeat(2,1fr);gap:40px}.footer-column h4{font-size:16px;font-weight:600;margin-bottom:16px}.footer-column a,.footer-column p{display:block;color:#ffffffb3;text-decoration:none;margin-bottom:12px;transition:color .3s}.footer-column a:hover{color:#fff}.footer-bottom{padding-top:24px;border-top:1px solid rgba(255,255,255,.1);text-align:center;opacity:.5}.modal{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000bf;display:flex;align-items:center;justify-content:center;z-index:2000;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:#fff;border-radius:20px;padding:40px;max-width:450px;width:90%;position:relative;box-shadow:0 20px 60px #0000004d;animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.modal-close{position:absolute;top:20px;right:20px;width:36px;height:36px;border:none;background:#f5f5f5;color:#666;font-size:28px;line-height:1;border-radius:50%;cursor:pointer;transition:all .3s;display:flex;align-items:center;justify-content:center}.modal-close:hover{background:#000;color:#fff;transform:rotate(90deg)}.modal-title{font-size:24px;font-weight:700;margin-bottom:24px;text-align:center;color:#1a1a1a}.modal-body{display:flex;flex-direction:column;align-items:center;gap:20px}.qr-code{width:240px;height:240px;object-fit:contain;border-radius:12px;border:2px solid #e0e0e0;padding:10px;background:#fff}.wechat-info{text-align:center;width:100%}.wechat-id{font-size:18px;color:#1a1a1a;margin-bottom:8px}.wechat-id strong{font-weight:700;color:#000;font-size:20px;-webkit-user-select:all;user-select:all}.wechat-tip{font-size:14px;color:#666}.modal-video{max-width:900px;width:95%;padding:30px}.demo-video{width:100%;max-width:100%;border-radius:12px;background:#000;box-shadow:0 10px 30px #0000004d;outline:none}.demo-video::-webkit-media-controls-panel{background:linear-gradient(transparent,#000000b3)}@media (max-width: 1024px){.hero-content,.features-grid,.showcase-grid,.pricing-grid{grid-template-columns:1fr}.nav-links{gap:16px}}@media (max-width: 768px){.hero{padding:100px 0 60px}.hero-title{font-size:32px;line-height:1.3;margin-bottom:16px}.hero-subtitle{font-size:16px;margin-bottom:24px}.section-title{font-size:28px}.hero-features{flex-wrap:wrap;gap:12px;margin-bottom:24px}.hero-feature{padding:6px 12px;font-size:14px}.feature-icon{font-size:16px}.hero-buttons{flex-direction:column;gap:12px;margin-bottom:0}.btn-large{width:100%;justify-content:center;padding:14px 24px;font-size:16px}.hero-logo-display{padding:30px;margin-top:40px}.hero-logo{max-width:200px}.footer-content{grid-template-columns:1fr}.nav-links{display:none}.navbar{padding:12px 0}.logo{font-size:20px}.logo-icon{width:28px;height:28px}.modal-content{padding:30px 20px;max-width:90%}.modal-title{font-size:20px}.qr-code{width:200px;height:200px}.wechat-id{font-size:16px}.wechat-id strong{font-size:18px}.modal-video{max-width:95%;padding:20px}.demo-video{border-radius:8px}.download-title{font-size:28px}.download-subtitle{font-size:16px}}@media (max-width: 480px){.container{padding:0 16px}.hero-title{font-size:28px}.hero-subtitle{font-size:15px}.hero-features{gap:8px}.hero-feature{padding:5px 10px;font-size:13px}.btn-large{padding:12px 20px;font-size:15px}.hero-logo-display{padding:20px}.hero-logo{max-width:160px}.section-title{font-size:24px}.section-subtitle{font-size:15px}.modal-close{width:32px;height:32px;font-size:24px}}