*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#667eea;--primary-dark:#764ba2;--secondary:#f093fb;--accent:#00d4ff;--text:#333;--text-light:#666;--bg:#f8f9fa;--white:#fff;--shadow:0 4px 20px rgba(0,0,0,0.08);--shadow-lg:0 10px 40px rgba(0,0,0,0.12);--radius:12px;--transition:all 0.3s ease}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;color:var(--text);line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 32px;border-radius:50px;font-weight:600;font-size:16px;cursor:pointer;transition:var(--transition);border:none;text-align:center}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--white);box-shadow:0 4px 15px rgba(102,126,234,0.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(102,126,234,0.5)}
.btn-outline{background:transparent;border:2px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:var(--white)}
.btn-lg{padding:18px 42px;font-size:18px}
.section{padding:100px 0}
.section-title{text-align:center;margin-bottom:60px}
.section-title h2{font-size:42px;font-weight:700;margin-bottom:16px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-title p{font-size:18px;color:var(--text-light);max-width:600px;margin:0 auto}
header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);transition:var(--transition)}
header.scrolled{background:rgba(255,255,255,0.98);box-shadow:var(--shadow)}
.nav-container{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;max-width:1200px;margin:0 auto}
.logo{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:700}
.logo img{width:40px;height:40px}
.logo-text{background:linear-gradient(135deg,var(--primary),var(--primary-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-menu{display:flex;align-items:center;gap:8px;list-style:none}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:4px;padding:10px 16px;font-weight:500;border-radius:8px;transition:var(--transition)}
.nav-link:hover{background:rgba(102,126,234,0.1);color:var(--primary)}
.nav-link .arrow{transition:transform 0.3s ease;font-size:12px}
.nav-item:hover .arrow{transform:rotate(180deg)}
.dropdown{position:absolute;top:100%;left:0;min-width:200px;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:8px;opacity:0;visibility:hidden;transform:translateY(10px);transition:var(--transition)}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:block;padding:10px 16px;border-radius:8px;font-size:14px;transition:var(--transition)}
.dropdown a:hover{background:rgba(102,126,234,0.1);color:var(--primary)}
.nav-btn{margin-left:16px}
.hamburger{display:none;flex-direction:column;gap:4px;cursor:pointer;padding:10px}
.hamburger span{width:24px;height:2px;background:var(--text);transition:var(--transition)}
.hero{padding:140px 0 100px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:var(--white);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(255,255,255,0.1) 0%,transparent 70%);border-radius:50%}
.hero::after{content:'';position:absolute;bottom:-30%;left:-10%;width:400px;height:400px;background:radial-gradient(circle,rgba(255,255,255,0.08) 0%,transparent 70%);border-radius:50%}
.hero-container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero-content h1{font-size:52px;font-weight:800;line-height:1.2;margin-bottom:20px}
.hero-content .subtitle{font-size:20px;opacity:0.9;margin-bottom:32px}
.hero-stats{display:flex;gap:40px;margin-bottom:40px}
.stat-item{text-align:center}
.stat-value{font-size:36px;font-weight:700}
.stat-label{font-size:14px;opacity:0.8}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}
.hero-demo{background:rgba(255,255,255,0.1);border-radius:20px;padding:30px;backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.2)}
.demo-header{display:flex;align-items:center;gap:8px;margin-bottom:20px}
.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{background:rgba(0,0,0,0.3);border-radius:12px;padding:24px}
.demo-server{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;padding:16px;background:rgba(255,255,255,0.1);border-radius:8px}
.demo-server-info{display:flex;align-items:center;gap:12px}
.demo-flag{font-size:24px}
.demo-connect-btn{width:80px;height:80px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#0099cc);border:none;color:var(--white);font-size:14px;font-weight:600;cursor:pointer;transition:var(--transition);display:flex;align-items:center;justify-content:center;margin:0 auto}
.demo-connect-btn:hover{transform:scale(1.05);box-shadow:0 0 30px rgba(0,212,255,0.5)}
.demo-connect-btn.connected{background:linear-gradient(135deg,#27c93f,#1ea82e)}
.demo-speed{text-align:center;margin-top:20px}
.demo-speed-value{font-size:48px;font-weight:700;color:var(--accent)}
.demo-speed-unit{font-size:14px;opacity:0.8}
.demo-progress{height:4px;background:rgba(255,255,255,0.2);border-radius:2px;margin-top:16px;overflow:hidden}
.demo-progress-bar{height:100%;background:linear-gradient(90deg,var(--accent),#0099cc);width:0;transition:width 2s ease}
.features{background:var(--bg)}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:var(--white);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:var(--transition);border:1px solid transparent}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--primary)}
.feature-icon{width:64px;height:64px;margin:0 auto 20px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;color:var(--white)}
.feature-card h3{font-size:18px;margin-bottom:12px}
.feature-card p{font-size:14px;color:var(--text-light)}
.scenarios-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scenario-card{position:relative;border-radius:var(--radius);overflow:hidden;height:280px;cursor:pointer}
.scenario-card img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.scenario-card:hover img{transform:scale(1.1)}
.scenario-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,0.8) 0%,transparent 60%);display:flex;flex-direction:column;justify-content:flex-end;padding:24px;color:var(--white)}
.scenario-overlay h3{font-size:20px;margin-bottom:8px}
.scenario-overlay p{font-size:14px;opacity:0.9}
.pricing{background:var(--bg)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1000px;margin:0 auto}
.pricing-card{background:var(--white);border-radius:var(--radius);padding:40px 32px;text-align:center;transition:var(--transition);position:relative}
.pricing-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.pricing-card.popular{border:2px solid var(--primary);transform:scale(1.05)}
.pricing-card.popular:hover{transform:scale(1.05) translateY(-8px)}
.popular-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--white);padding:6px 20px;border-radius:20px;font-size:12px;font-weight:600}
.pricing-name{font-size:20px;font-weight:600;margin-bottom:8px}
.pricing-price{font-size:48px;font-weight:700;color:var(--primary);margin-bottom:4px}
.pricing-price span{font-size:16px;color:var(--text-light);font-weight:400}
.pricing-period{font-size:14px;color:var(--text-light);margin-bottom:24px}
.pricing-features{list-style:none;text-align:left;margin-bottom:32px}
.pricing-features li{padding:10px 0;border-bottom:1px solid #eee;display:flex;align-items:center;gap:10px;font-size:14px}
.pricing-features li:before{content:'✓';color:var(--primary);font-weight:700}
.faq-grid{max-width:800px;margin:0 auto}
.faq-item{background:var(--white);border-radius:var(--radius);margin-bottom:16px;overflow:hidden;box-shadow:var(--shadow)}
.faq-question{padding:20px 24px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:var(--transition)}
.faq-question:hover{color:var(--primary)}
.faq-question .icon{transition:transform 0.3s ease}
.faq-item.active .faq-question .icon{transform:rotate(180deg)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:all 0.3s ease}
.faq-item.active .faq-answer{padding:0 24px 20px;max-height:500px}
.faq-answer p{color:var(--text-light);line-height:1.8}
.testimonials{background:var(--bg)}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testimonial-card{background:var(--white);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.testimonial-header{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.testimonial-avatar{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:700;font-size:20px}
.testimonial-info h4{font-size:16px;margin-bottom:4px}
.testimonial-info p{font-size:13px;color:var(--text-light)}
.testimonial-stars{color:#ffc107;margin-bottom:12px}
.testimonial-text{font-size:14px;color:var(--text-light);line-height:1.8}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition)}
.news-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.news-card img{width:100%;height:200px;object-fit:cover}
.news-card-content{padding:24px}
.news-card-date{font-size:13px;color:var(--text-light);margin-bottom:8px}
.news-card-title{font-size:18px;font-weight:600;margin-bottom:12px;line-height:1.4}
.news-card-title:hover{color:var(--primary)}
.news-card-excerpt{font-size:14px;color:var(--text-light);line-height:1.6;margin-bottom:16px}
.news-card-link{color:var(--primary);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:4px}
.cta{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--white);text-align:center;padding:80px 0}
.cta h2{font-size:36px;margin-bottom:16px}
.cta p{font-size:18px;opacity:0.9;margin-bottom:32px}
footer{background:#1a1a2e;color:var(--white);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand p{font-size:14px;color:rgba(255,255,255,0.7);margin-top:16px;line-height:1.8}
.footer-col h4{font-size:16px;margin-bottom:20px}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,0.7);transition:var(--transition)}
.footer-col ul li a:hover{color:var(--white)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:30px;text-align:center;font-size:14px;color:rgba(255,255,255,0.5)}
.download-hero{padding:140px 0 80px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:var(--white)}
.download-container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.download-info h1{font-size:42px;font-weight:800;margin-bottom:16px}
.download-info .subtitle{font-size:18px;opacity:0.9;margin-bottom:32px}
.download-stats{display:flex;gap:32px;margin-bottom:32px}
.download-stat{text-align:center}
.download-stat-value{font-size:28px;font-weight:700}
.download-stat-label{font-size:13px;opacity:0.8}
.download-versions{padding:80px 0}
.version-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.version-card{background:var(--white);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);text-align:center}
.version-card h3{font-size:20px;margin-bottom:8px}
.version-card .version{font-size:14px;color:var(--text-light);margin-bottom:16px}
.version-card .size{font-size:13px;color:var(--text-light);margin-bottom:20px}
.version-features{list-style:none;text-align:left;margin-bottom:24px}
.version-features li{padding:8px 0;font-size:14px;display:flex;align-items:center;gap:8px}
.version-features li:before{content:'✓';color:var(--primary);font-weight:700}
.system-requirements{background:var(--bg);padding:80px 0}
.requirements-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.requirement-card{background:var(--white);border-radius:var(--radius);padding:24px;display:flex;align-items:center;gap:16px}
.requirement-icon{width:48px;height:48px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--white);flex-shrink:0}
.requirement-info h4{font-size:15px;margin-bottom:4px}
.requirement-info p{font-size:13px;color:var(--text-light)}
.install-steps{padding:80px 0}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-card{text-align:center;padding:32px 24px}
.step-number{width:60px;height:60px;margin:0 auto 20px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--white);font-size:24px;font-weight:700}
.step-card h3{font-size:18px;margin-bottom:12px}
.step-card p{font-size:14px;color:var(--text-light)}
.news-page{padding:120px 0 80px}
.news-list-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.news-list-card{display:flex;gap:24px;background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition)}
.news-list-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.news-list-card img{width:200px;height:160px;object-fit:cover;flex-shrink:0}
.news-list-content{padding:24px 24px 24px 0;display:flex;flex-direction:column;justify-content:center}
.news-list-date{font-size:13px;color:var(--text-light);margin-bottom:8px}
.news-list-title{font-size:18px;font-weight:600;margin-bottom:12px;line-height:1.4}
.news-list-title:hover{color:var(--primary)}
.news-list-excerpt{font-size:14px;color:var(--text-light);line-height:1.6}
.article-page{padding:120px 0 80px}
.article-container{display:grid;grid-template-columns:1fr 320px;gap:40px}
.article-main{background:var(--white);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow)}
.article-breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-light);margin-bottom:24px}
.article-breadcrumb a:hover{color:var(--primary)}
.article-header h1{font-size:32px;font-weight:700;margin-bottom:16px;line-height:1.4}
.article-meta{display:flex;align-items:center;gap:16px;font-size:14px;color:var(--text-light);margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid #eee}
.article-content h2{font-size:24px;font-weight:600;margin:32px 0 16px;padding-left:16px;border-left:4px solid var(--primary)}
.article-content p{margin-bottom:16px;line-height:1.8;color:var(--text-light)}
.article-content img{border-radius:var(--radius);margin:24px 0}
.article-sidebar{position:sticky;top:100px;height:fit-content}
.sidebar-card{background:var(--white);border-radius:var(--radius);padding:24px;margin-bottom:24px;box-shadow:var(--shadow)}
.sidebar-card-title{font-size:16px;font-weight:600;margin-bottom:16px;padding-left:12px;border-left:3px solid var(--primary)}
.toc-list{list-style:none}
.toc-list li{position:relative;padding:10px 0 10px 24px;font-size:14px;cursor:pointer;transition:var(--transition)}
.toc-list li:before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:8px;height:8px;border-radius:50%;background:#ddd;transition:var(--transition)}
.toc-list li.active{color:var(--primary);font-weight:600}
.toc-list li.active:before{background:var(--primary)}
.toc-list li:hover{color:var(--primary)}
.hot-news-list{list-style:none}
.hot-news-item{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid #f0f0f0}
.hot-news-item:last-child{border-bottom:none}
.hot-news-rank{width:24px;height:24px;border-radius:50%;background:#ddd;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:var(--white);flex-shrink:0}
.hot-news-item:nth-child(1) .hot-news-rank{background:linear-gradient(135deg,#ff6b6b,#ee5a5a)}
.hot-news-item:nth-child(2) .hot-news-rank{background:linear-gradient(135deg,#ffa502,#ff8f00)}
.hot-news-item:nth-child(3) .hot-news-rank{background:linear-gradient(135deg,#ffd700,#ffb700)}
.hot-news-title{font-size:14px;line-height:1.4;flex:1}
.hot-news-title:hover{color:var(--primary)}
.category-tags{display:flex;flex-wrap:wrap;gap:8px}
.category-tag{padding:6px 14px;background:#f0f0f0;border-radius:20px;font-size:13px;transition:var(--transition);cursor:pointer}
.category-tag:hover{background:var(--primary);color:var(--white)}
.article-nav{display:flex;justify-content:space-between;margin-top:40px;padding-top:24px;border-top:1px solid #eee}
.article-nav a{font-size:14px;color:var(--text-light)}
.article-nav a:hover{color:var(--primary)}
.comments-section{margin-top:40px;padding-top:40px;border-top:1px solid #eee}
.comments-section h3{font-size:20px;margin-bottom:24px}
.comment-item{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid #f0f0f0}
.comment-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:700;font-size:18px;flex-shrink:0}
.comment-content{flex:1}
.comment-header{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.comment-name{font-weight:600;font-size:15px}
.comment-date{font-size:13px;color:var(--text-light)}
.comment-text{font-size:14px;color:var(--text-light);line-height:1.6}
.related-news{margin-top:40px;padding-top:40px;border-top:1px solid #eee}
.related-news h3{font-size:20px;margin-bottom:24px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.related-card{background:var(--bg);border-radius:8px;padding:16px;transition:var(--transition)}
.related-card:hover{background:var(--white);box-shadow:var(--shadow)}
.related-card h4{font-size:14px;line-height:1.4;margin-bottom:8px}
.related-card h4:hover{color:var(--primary)}
.related-card p{font-size:12px;color:var(--text-light)}
.sitemap-page{padding:120px 0 80px}
.sitemap-section{margin-bottom:40px}
.sitemap-section h2{font-size:24px;margin-bottom:20px;padding-bottom:12px;border-bottom:2px solid var(--primary)}
.sitemap-links{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.sitemap-links a{padding:12px 16px;background:var(--bg);border-radius:8px;font-size:14px;transition:var(--transition)}
.sitemap-links a:hover{background:var(--primary);color:var(--white)}
.error-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--white);text-align:center}
.error-content h1{font-size:120px;font-weight:800;line-height:1}
.error-content p{font-size:24px;margin:20px 0 40px}
.error-countdown{font-size:16px;opacity:0.8}
@media(max-width:992px){.hero-container,.download-container{grid-template-columns:1fr;gap:40px}.hero-content h1{font-size:36px}.features-grid{grid-template-columns:repeat(2,1fr)}.scenarios-grid{grid-template-columns:repeat(2,1fr)}.pricing-grid{grid-template-columns:1fr;max-width:400px}.pricing-card.popular{transform:none}.pricing-card.popular:hover{transform:translateY(-8px)}.testimonials-grid{grid-template-columns:1fr}.news-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}.article-container{grid-template-columns:1fr}.article-sidebar{position:static}.version-grid{grid-template-columns:1fr}.requirements-grid{grid-template-columns:repeat(2,1fr)}.steps-grid{grid-template-columns:repeat(2,1fr)}.news-list-grid{grid-template-columns:1fr}.nav-menu{display:none}.nav-menu.active{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:var(--white);padding:20px;box-shadow:var(--shadow)}.hamburger{display:flex}.dropdown{position:static;opacity:1;visibility:visible;transform:none;display:none;padding-left:20px}.nav-item.active .dropdown{display:block}}
@media(max-width:768px){.section{padding:60px 0}.section-title h2{font-size:28px}.hero{padding:100px 0 60px}.hero-content h1{font-size:28px}.hero-stats{flex-wrap:wrap;gap:20px}.features-grid{grid-template-columns:1fr}.scenarios-grid{grid-template-columns:1fr}.news-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.requirements-grid{grid-template-columns:1fr}.steps-grid{grid-template-columns:1fr}.sitemap-links{grid-template-columns:repeat(2,1fr)}.related-grid{grid-template-columns:1fr}.news-list-card{flex-direction:column}.news-list-card img{width:100%;height:200px}.news-list-content{padding:24px}}
@media(max-width:480px){.hero-content h1{font-size:24px}.hero-buttons{flex-direction:column}.btn{width:100%}.download-stats{flex-direction:column;gap:16px}.stat-item{display:flex;align-items:center;gap:12px}}