*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#2ecc71;--primary-dark:#27ae60;--secondary:#3498db;--accent:#e74c3c;--dark:#2c3e50;--light:#ecf0f1;--gray:#95a5a6;--text:#333;--bg:#fff;--shadow:0 2px 20px rgba(0,0,0,0.1);--radius:12px}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:all 0.3s}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.btn{display:inline-block;padding:12px 32px;border-radius:50px;font-weight:600;cursor:pointer;transition:all 0.3s;border:none;font-size:16px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 4px 15px rgba(46,204,113,0.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(46,204,113,0.5)}
.btn-secondary{background:#fff;color:var(--primary);border:2px solid var(--primary)}
.btn-secondary:hover{background:var(--primary);color:#fff}
.btn-lg{padding:16px 48px;font-size:18px}
.section{padding:80px 0}
.section-title{text-align:center;margin-bottom:60px}
.section-title h2{font-size:36px;margin-bottom:16px;color:var(--dark)}
.section-title p{font-size:18px;color:var(--gray)}
header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);transition:all 0.3s}
header.scrolled{background:rgba(255,255,255,0.98);box-shadow:var(--shadow)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.logo{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:700;color:var(--primary)}
.logo img{width:40px;height:40px}
.nav-menu{display:flex;align-items:center;gap:32px;list-style:none}
.nav-item{position:relative}
.nav-link{padding:8px 0;font-weight:500;color:var(--dark)}
.nav-link:hover{color:var(--primary)}
.nav-link .arrow{display:inline-block;margin-left:4px;transition:transform 0.3s;font-size:12px}
.nav-item:hover .arrow{transform:rotate(180deg)}
.dropdown{position:absolute;top:100%;left:-20px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:12px 0;min-width:180px;opacity:0;visibility:hidden;transform:translateY(10px);transition:all 0.3s}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:block;padding:10px 20px;color:var(--text)}
.dropdown a:hover{background:var(--light);color:var(--primary)}
.nav-btn{margin-left:16px}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.hamburger span{width:24px;height:2px;background:var(--dark);transition:all 0.3s}
.hero{padding:140px 0 80px;background:linear-gradient(135deg,#f8fffe 0%,#e8f8f5 100%);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(46,204,113,0.1) 0%,transparent 70%);border-radius:50%}
.hero-content{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-text h1{font-size:48px;line-height:1.2;margin-bottom:20px;color:var(--dark)}
.hero-text h1 span{color:var(--primary)}
.hero-text p{font-size:20px;color:var(--gray);margin-bottom:32px}
.hero-stats{display:flex;gap:40px;margin-top:40px}
.stat-item{text-align:center}
.stat-item .num{font-size:36px;font-weight:700;color:var(--primary)}
.stat-item .label{font-size:14px;color:var(--gray)}
.hero-demo{position:relative}
.demo-window{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,0.15);overflow:hidden}
.demo-header{background:var(--dark);padding:12px 16px;display:flex;align-items:center;gap:8px}
.demo-dot{width:12px;height:12px;border-radius:50%}
.demo-dot:nth-child(1){background:#ff5f56}
.demo-dot:nth-child(2){background:#ffbd2e}
.demo-dot:nth-child(3){background:#27c93f}
.demo-body{padding:24px}
.demo-connect-btn{width:120px;height:120px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border:none;cursor:pointer;margin:20px auto;display:flex;align-items:center;justify-content:center;transition:all 0.3s;box-shadow:0 10px 30px rgba(46,204,113,0.4)}
.demo-connect-btn:hover{transform:scale(1.05)}
.demo-connect-btn.connected{background:linear-gradient(135deg,var(--secondary),#2980b9)}
.demo-connect-btn svg{width:48px;height:48px;fill:#fff}
.demo-status{text-align:center;margin:20px 0;font-size:18px;font-weight:600}
.demo-status.connected{color:var(--primary)}
.demo-info{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px}
.demo-info-item{text-align:center;padding:12px;background:var(--light);border-radius:8px}
.demo-info-item .value{font-size:20px;font-weight:700;color:var(--primary)}
.demo-info-item .label{font-size:12px;color:var(--gray)}
.demo-server{margin-top:20px}
.demo-server select{width:100%;padding:12px;border:2px solid var(--light);border-radius:8px;font-size:14px;cursor:pointer}
.features{background:#fff}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.feature-card{padding:32px;border-radius:var(--radius);background:#fff;border:1px solid var(--light);transition:all 0.3s}
.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--primary)}
.feature-icon{width:60px;height:60px;border-radius:12px;background:linear-gradient(135deg,rgba(46,204,113,0.1),rgba(46,204,113,0.2));display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.feature-icon svg{width:32px;height:32px;fill:var(--primary)}
.feature-card h3{font-size:20px;margin-bottom:12px;color:var(--dark)}
.feature-card p{color:var(--gray);font-size:15px}
.scenarios{background:var(--light)}
.scenarios-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scenario-card{background:#fff;border-radius:var(--radius);overflow:hidden;transition:all 0.3s}
.scenario-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.scenario-img{height:180px;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center}
.scenario-img svg{width:64px;height:64px;fill:#fff;opacity:0.8}
.scenario-content{padding:24px}
.scenario-content h3{font-size:18px;margin-bottom:8px;color:var(--dark)}
.scenario-content p{color:var(--gray);font-size:14px}
.pricing{background:#fff}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;max-width:1000px;margin:0 auto}
.pricing-card{padding:40px 32px;border-radius:var(--radius);background:#fff;border:2px solid var(--light);text-align:center;transition:all 0.3s;position:relative}
.pricing-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.pricing-card.popular{border-color:var(--primary);transform:scale(1.05)}
.pricing-card.popular::before{content:'最受欢迎';position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--primary);color:#fff;padding:4px 16px;border-radius:20px;font-size:12px}
.pricing-name{font-size:20px;font-weight:600;color:var(--dark);margin-bottom:8px}
.pricing-price{font-size:48px;font-weight:700;color:var(--primary);margin:20px 0}
.pricing-price span{font-size:16px;color:var(--gray)}
.pricing-features{list-style:none;margin:24px 0;text-align:left}
.pricing-features li{padding:10px 0;border-bottom:1px solid var(--light);display:flex;align-items:center;gap:10px}
.pricing-features li::before{content:'✓';color:var(--primary);font-weight:700}
.faq{background:var(--light)}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:var(--radius);margin-bottom:16px;overflow:hidden}
.faq-question{padding:20px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:var(--dark)}
.faq-question:hover{color:var(--primary)}
.faq-question .icon{transition:transform 0.3s}
.faq-item.active .faq-question .icon{transform:rotate(180deg)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:all 0.3s}
.faq-item.active .faq-answer{padding:0 24px 20px;max-height:500px}
.faq-answer p{color:var(--gray);line-height:1.8}
.testimonials{background:#fff}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.testimonial-card{padding:32px;border-radius:var(--radius);background:#fff;border:1px solid var(--light)}
.testimonial-header{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.testimonial-avatar{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:20px}
.testimonial-info h4{font-size:16px;color:var(--dark)}
.testimonial-info p{font-size:13px;color:var(--gray)}
.testimonial-stars{color:#f39c12;margin-bottom:12px}
.testimonial-text{color:var(--gray);font-style:italic}
.news{background:var(--light)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.news-card{background:#fff;border-radius:var(--radius);overflow:hidden;transition:all 0.3s}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.news-img{height:200px;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center}
.news-img svg{width:48px;height:48px;fill:#fff;opacity:0.6}
.news-content{padding:24px}
.news-date{font-size:13px;color:var(--gray);margin-bottom:8px}
.news-content h3{font-size:18px;margin-bottom:12px;color:var(--dark);line-height:1.4}
.news-content h3:hover{color:var(--primary)}
.news-excerpt{color:var(--gray);font-size:14px;margin-bottom:16px}
.news-link{color:var(--primary);font-weight:600;font-size:14px}
.cta{background:linear-gradient(135deg,var(--primary),var(--primary-dark));padding:80px 0;text-align:center;color:#fff}
.cta h2{font-size:36px;margin-bottom:16px}
.cta p{font-size:18px;opacity:0.9;margin-bottom:32px}
.cta .btn{background:#fff;color:var(--primary)}
.cta .btn:hover{background:var(--dark);color:#fff}
footer{background:var(--dark);color:#fff;padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-col h4{font-size:16px;margin-bottom:20px;color:#fff}
.footer-col p{color:rgba(255,255,255,0.7);font-size:14px;line-height:1.8}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:rgba(255,255,255,0.7);font-size:14px}
.footer-col ul li a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:30px;text-align:center;color:rgba(255,255,255,0.5);font-size:14px}
@media(max-width:992px){.hero-content{grid-template-columns:1fr;text-align:center}.hero-stats{justify-content:center}.features-grid,.scenarios-grid,.testimonials-grid,.news-grid{grid-template-columns:repeat(2,1fr)}.pricing-grid{grid-template-columns:1fr;max-width:400px}.footer-grid{grid-template-columns:1fr 1fr}.nav-menu{display:none}.hamburger{display:flex}.nav-menu.active{display:flex;position:fixed;top:70px;left:0;right:0;bottom:0;background:#fff;flex-direction:column;padding:40px;gap:20px}.dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;display:none}.nav-item.active .dropdown{display:block}}
@media(max-width:768px){.hero-text h1{font-size:36px}.section-title h2{font-size:28px}.features-grid,.scenarios-grid,.testimonials-grid,.news-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.hero-stats{flex-direction:column;gap:20px}}
@media(max-width:480px){.hero-text h1{font-size:28px}.hero-text p{font-size:16px}.btn{padding:10px 24px;font-size:14px}.section{padding:60px 0}}