*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#0066ff;--primary-dark:#0052cc;--secondary:#00d4aa;--dark:#0a1628;--gray:#64748b;--light:#f8fafc;--white:#ffffff;--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;line-height:1.6;color:#1e293b;background:var(--white);overflow-x:hidden}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;height:auto;display:block}
button{cursor:pointer;border:none;outline:none;font-family:inherit;transition:var(--transition)}
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);box-shadow:0 2px 20px rgba(0,0,0,0.05);transition:var(--transition)}
.navbar.scrolled{background:rgba(10,22,40,0.95);box-shadow:0 4px 30px rgba(0,0,0,0.15)}
.nav-container{display:flex;align-items:center;justify-content:space-between;height:70px;max-width:1200px;margin:0 auto;padding:0 20px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:700;color:var(--primary)}
.nav-logo img{width:40px;height:40px}
.nav-menu{display:flex;align-items:center;gap:30px;list-style:none}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:5px;font-size:15px;font-weight:500;color:var(--dark);transition:var(--transition)}
.navbar.scrolled .nav-link{color:var(--white)}
.nav-link:hover{color:var(--primary)}
.nav-arrow{font-size:10px;transition:transform 0.3s}
.nav-item:hover .nav-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);opacity:0;visibility:hidden;transform:translateY(10px);transition:var(--transition);padding:10px 0}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown-item{display:block;padding:10px 20px;font-size:14px;color:var(--dark);transition:var(--transition)}
.dropdown-item:hover{background:var(--light);color:var(--primary);padding-left:25px}
.nav-cta{background:linear-gradient(135deg,var(--primary),var(--secondary));color:var(--white);padding:10px 24px;border-radius:25px;font-weight:600;font-size:14px}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,102,255,0.3)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer}
.nav-toggle span{width:25px;height:3px;background:var(--dark);border-radius:3px;transition:var(--transition)}
.navbar.scrolled .nav-toggle span{background:var(--white)}
.hero{padding:120px 0 80px;background:linear-gradient(135deg,#0a1628 0%,#1e3a5f 100%);color:var(--white);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:url('/images/hero-vpn.jpg') center/cover;opacity:0.1}
.hero-container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero-content h1{font-size:48px;font-weight:800;line-height:1.2;margin-bottom:20px}
.hero-content p{font-size:18px;color:rgba(255,255,255,0.8);margin-bottom:30px}
.hero-stats{display:flex;gap:40px;margin-bottom:30px}
.stat-item{text-align:center}
.stat-number{font-size:36px;font-weight:800;color:var(--secondary)}
.stat-label{font-size:14px;color:rgba(255,255,255,0.7)}
.hero-buttons{display:flex;gap:15px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:30px;font-weight:600;font-size:16px;transition:var(--transition)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:var(--white)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(0,102,255,0.4)}
.btn-secondary{background:rgba(255,255,255,0.1);color:var(--white);border:2px solid rgba(255,255,255,0.3)}
.btn-secondary:hover{background:rgba(255,255,255,0.2);border-color:var(--white)}
.hero-demo{background:rgba(255,255,255,0.05);border-radius:20px;padding:30px;backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.1)}
.demo-header{display:flex;align-items:center;gap:10px;margin-bottom:20px;padding-bottom:15px;border-bottom:1px solid rgba(255,255,255,0.1)}
.demo-dot{width:12px;height:12px;border-radius:50%}
.demo-dot:nth-child(1){background:#ff5f57}
.demo-dot:nth-child(2){background:#ffbd2e}
.demo-dot:nth-child(3){background:#28ca42}
.demo-content{text-align:center}
.demo-status{font-size:14px;color:rgba(255,255,255,0.7);margin-bottom:15px}
.demo-speed{font-size:48px;font-weight:800;color:var(--secondary);margin-bottom:10px}
.demo-unit{font-size:16px;color:rgba(255,255,255,0.6)}
.demo-connect{background:linear-gradient(135deg,var(--primary),var(--secondary));color:var(--white);padding:12px 40px;border-radius:25px;font-weight:600;margin-top:20px;display:inline-block}
.demo-connect:hover{transform:scale(1.05)}
.demo-nodes{display:flex;justify-content:center;gap:15px;margin-top:20px;flex-wrap:wrap}
.node-item{padding:8px 16px;background:rgba(255,255,255,0.1);border-radius:20px;font-size:13px;cursor:pointer;transition:var(--transition)}
.node-item:hover,.node-item.active{background:var(--primary);color:var(--white)}
.section{padding:80px 0}
.section-header{text-align:center;margin-bottom:60px}
.section-title{font-size:36px;font-weight:800;margin-bottom:15px;color:var(--dark)}
.section-subtitle{font-size:18px;color:var(--gray);max-width:600px;margin:0 auto}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px}
.feature-card{background:var(--white);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);transition:var(--transition);border:1px solid rgba(0,0,0,0.05)}
.feature-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg)}
.feature-icon{width:60px;height:60px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:15px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:28px}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:10px;color:var(--dark)}
.feature-card p{color:var(--gray);font-size:15px;line-height:1.7}
.scenarios-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}
.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:var(--transition)}
.scenario-card:hover img{transform:scale(1.1)}
.scenario-overlay{position:absolute;bottom:0;left:0;right:0;padding:30px;background:linear-gradient(to top,rgba(0,0,0,0.9),transparent);color:var(--white)}
.scenario-card h3{font-size:22px;font-weight:700;margin-bottom:8px}
.scenario-card p{font-size:14px;color:rgba(255,255,255,0.8)}
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px;max-width:1000px;margin:0 auto}
.pricing-card{background:var(--white);border-radius:var(--radius);padding:40px 30px;box-shadow:var(--shadow);text-align:center;transition:var(--transition);border:2px solid transparent;position:relative}
.pricing-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg)}
.pricing-card.popular{border-color:var(--primary);transform:scale(1.05)}
.popular-badge{position:absolute;top:-15px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--primary),var(--secondary));color:var(--white);padding:6px 20px;border-radius:20px;font-size:13px;font-weight:600}
.pricing-name{font-size:20px;font-weight:700;margin-bottom:10px;color:var(--dark)}
.pricing-price{font-size:48px;font-weight:800;color:var(--primary);margin-bottom:5px}
.pricing-price span{font-size:16px;color:var(--gray);font-weight:400}
.pricing-features{list-style:none;margin:30px 0;text-align:left}
.pricing-features li{padding:10px 0;border-bottom:1px solid rgba(0,0,0,0.05);display:flex;align-items:center;gap:10px;font-size:15px}
.pricing-features li:before{content:'✓';color:var(--secondary);font-weight:700}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--white);border-radius:var(--radius);margin-bottom:15px;box-shadow:var(--shadow);overflow:hidden}
.faq-question{padding:20px 25px;font-weight:600;font-size:17px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:var(--transition)}
.faq-question:hover{color:var(--primary)}
.faq-arrow{transition:transform 0.3s}
.faq-item.active .faq-arrow{transform:rotate(180deg)}
.faq-answer{padding:0 25px;max-height:0;overflow:hidden;transition:all 0.3s ease;color:var(--gray);line-height:1.8}
.faq-item.active .faq-answer{padding:0 25px 20px;max-height:500px}
.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}
.testimonial-card{background:var(--white);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.testimonial-header{display:flex;align-items:center;gap:15px;margin-bottom:15px}
.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:var(--white);font-weight:700;font-size:20px}
.testimonial-info h4{font-size:16px;font-weight:700;color:var(--dark)}
.testimonial-info p{font-size:13px;color:var(--gray)}
.testimonial-stars{color:#ffc107;margin-bottom:10px}
.testimonial-text{color:var(--gray);font-size:15px;line-height:1.7}
.news-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:30px}
.news-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition)}
.news-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg)}
.news-image{height:200px;overflow:hidden}
.news-image img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.news-card:hover .news-image img{transform:scale(1.1)}
.news-content{padding:25px}
.news-date{font-size:13px;color:var(--gray);margin-bottom:10px}
.news-card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--dark);line-height:1.4}
.news-card p{color:var(--gray);font-size:14px;line-height:1.6;margin-bottom:15px}
.news-link{color:var(--primary);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:5px}
.news-link:hover{gap:10px}
.cta-section{background:linear-gradient(135deg,var(--primary),var(--secondary));padding:80px 0;text-align:center;color:var(--white)}
.cta-section h2{font-size:36px;font-weight:800;margin-bottom:15px}
.cta-section p{font-size:18px;margin-bottom:30px;opacity:0.9}
.footer{background:var(--dark);color:rgba(255,255,255,0.7);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:40px;margin-bottom:40px}
.footer-col h4{color:var(--white);font-size:18px;font-weight:700;margin-bottom:20px}
.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;transition:var(--transition)}
.footer-col ul li a:hover{color:var(--white);padding-left:5px}
.footer-bottom{text-align:center;padding-top:30px;border-top:1px solid rgba(255,255,255,0.1);font-size:14px}
.breadcrumb{padding:20px 0;background:var(--light);font-size:14px}
.breadcrumb a{color:var(--gray)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 10px;color:var(--gray)}
.article-container{display:grid;grid-template-columns:1fr 300px;gap:40px;padding:40px 0}
.article-content{background:var(--white);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow)}
.article-content h1{font-size:32px;font-weight:800;margin-bottom:20px;line-height:1.3;color:var(--dark)}
.article-meta{display:flex;gap:20px;margin-bottom:30px;padding-bottom:20px;border-bottom:1px solid rgba(0,0,0,0.05);font-size:14px;color:var(--gray)}
.article-content img{border-radius:var(--radius);margin:20px 0}
.article-content h2{font-size:24px;font-weight:700;margin:30px 0 15px;color:var(--dark)}
.article-content p{margin-bottom:15px;line-height:1.8;color:#334155}
.article-sidebar{position:sticky;top:90px;height:fit-content}
.sidebar-card{background:var(--white);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow);margin-bottom:20px}
.sidebar-title{font-size:18px;font-weight:700;margin-bottom:20px;padding-left:15px;border-left:4px solid var(--primary);color:var(--dark)}
.toc-list{list-style:none}
.toc-list li{padding:10px 0;border-bottom:1px solid rgba(0,0,0,0.05);position:relative;padding-left:20px}
.toc-list li:before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:8px;height:8px;border-radius:50%;background:var(--gray);transition:var(--transition)}
.toc-list li.active:before{background:var(--primary);transform:translateY(-50%) scale(1.3)}
.toc-list li a{color:var(--gray);font-size:14px;transition:var(--transition)}
.toc-list li.active a{color:var(--primary);font-weight:600}
.hot-news-list{list-style:none;counter-reset:hot-news}
.hot-news-list li{counter-increment:hot-news;padding:12px 0;border-bottom:1px solid rgba(0,0,0,0.05);display:flex;align-items:center;gap:15px}
.hot-news-list li:before{content:counter(hot-news);width:28px;height:28px;border-radius:50%;background:var(--gray);color:var(--white);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}
.hot-news-list li:nth-child(1):before{background:linear-gradient(135deg,#ff6b6b,#ee5a6f)}
.hot-news-list li:nth-child(2):before{background:linear-gradient(135deg,#f093fb,#f5576c)}
.hot-news-list li:nth-child(3):before{background:linear-gradient(135deg,#4facfe,#00f2fe)}
.hot-news-list li a{color:var(--dark);font-size:14px;line-height:1.5;transition:var(--transition)}
.hot-news-list li a:hover{color:var(--primary)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-item{padding:6px 14px;background:var(--light);border-radius:20px;font-size:13px;color:var(--gray);transition:var(--transition);cursor:pointer}
.tag-item:hover{background:var(--primary);color:var(--white)}
.comments-section{margin-top:40px;padding-top:40px;border-top:2px solid rgba(0,0,0,0.05)}
.comments-title{font-size:22px;font-weight:700;margin-bottom:25px;color:var(--dark)}
.comment-item{display:flex;gap:15px;padding:20px 0;border-bottom:1px solid rgba(0,0,0,0.05)}
.comment-avatar{width:45px;height:45px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));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;justify-content:space-between;margin-bottom:8px}
.comment-name{font-weight:600;color:var(--dark);font-size:15px}
.comment-date{font-size:13px;color:var(--gray)}
.comment-text{color:var(--gray);font-size:14px;line-height:1.7}
.article-nav{display:flex;justify-content:space-between;margin-top:30px;padding-top:30px;border-top:1px solid rgba(0,0,0,0.05)}
.article-nav a{color:var(--primary);font-weight:600;font-size:14px;display:flex;align-items:center;gap:5px}
.article-nav a:hover{gap:10px}
.related-news{margin-top:40px;padding-top:40px;border-top:2px solid rgba(0,0,0,0.05)}
.related-news h3{font-size:22px;font-weight:700;margin-bottom:25px;color:var(--dark)}
.download-hero{padding:120px 0 60px;background:linear-gradient(135deg,var(--dark),#1e3a5f);color:var(--white)}
.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.download-info h1{font-size:42px;font-weight:800;margin-bottom:20px}
.download-info p{font-size:18px;color:rgba(255,255,255,0.8);margin-bottom:30px}
.download-stats{display:flex;gap:30px;margin-bottom:30px}
.download-stat{text-align:center}
.download-stat-number{font-size:32px;font-weight:800;color:var(--secondary)}
.download-stat-label{font-size:14px;color:rgba(255,255,255,0.7)}
.versions-section{padding:60px 0;background:var(--light)}
.versions-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}
.version-card{background:var(--white);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.version-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:15px;border-bottom:1px solid rgba(0,0,0,0.05)}
.version-title{font-size:20px;font-weight:700;color:var(--dark)}
.version-size{font-size:14px;color:var(--gray)}
.version-features{list-style:none;margin-bottom:25px}
.version-features li{padding:8px 0;display:flex;align-items:center;gap:10px;font-size:14px;color:#334155}
.version-features li:before{content:'✓';color:var(--secondary);font-weight:700}
.system-requirements{padding:60px 0}
.requirements-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:25px}
.requirement-item{background:var(--white);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow);text-align:center}
.requirement-icon{font-size:36px;margin-bottom:15px}
.requirement-item h4{font-size:16px;font-weight:700;margin-bottom:8px;color:var(--dark)}
.requirement-item p{font-size:14px;color:var(--gray)}
.install-steps{padding:60px 0;background:var(--light)}
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px;max-width:1000px;margin:0 auto}
.step-card{background:var(--white);border-radius:var(--radius);padding:30px;text-align:center;box-shadow:var(--shadow);position:relative}
.step-number{position:absolute;top:-20px;left:50%;transform:translateX(-50%);width:40px;height:40px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px}
.step-card h4{font-size:18px;font-weight:700;margin:15px 0 10px;color:var(--dark)}
.step-card p{font-size:14px;color:var(--gray);line-height:1.6}
.sitemap-page{padding:120px 0 60px}
.sitemap-content{max-width:800px;margin:0 auto}
.sitemap-section{margin-bottom:40px}
.sitemap-section h2{font-size:24px;font-weight:700;margin-bottom:20px;color:var(--dark);padding-bottom:10px;border-bottom:2px solid var(--primary)}
.sitemap-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:15px}
.sitemap-links a{padding:12px 20px;background:var(--light);border-radius:8px;font-size:14px;color:var(--dark);transition:var(--transition)}
.sitemap-links a:hover{background:var(--primary);color:var(--white);transform:translateX(5px)}
.error-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--dark),#1e3a5f);color:var(--white);text-align:center}
.error-content h1{font-size:120px;font-weight:800;color:var(--secondary);margin-bottom:20px}
.error-content h2{font-size:32px;font-weight:700;margin-bottom:15px}
.error-content p{font-size:18px;color:rgba(255,255,255,0.8);margin-bottom:30px}
@media(max-width:992px){.hero-container,.download-grid,.article-container{grid-template-columns:1fr;gap:40px}.hero-content h1{font-size:36px}.nav-menu{position:fixed;top:70px;left:0;right:0;background:var(--white);flex-direction:column;padding:20px;box-shadow:var(--shadow-lg);transform:translateY(-150%);transition:var(--transition)}.nav-menu.active{transform:translateY(0)}.nav-toggle{display:flex}.dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;padding-left:20px;display:none}.nav-item.active .dropdown{display:block}.article-sidebar{position:static}}
@media(max-width:768px){.hero-content h1{font-size:28px}.section-title{font-size:28px}.hero-stats,.download-stats{flex-wrap:wrap;gap:20px}.pricing-card.popular{transform:none}.features-grid,.scenarios-grid,.news-grid{grid-template-columns:1fr}}
@media(max-width:480px){.container{padding:0 15px}.hero{padding:100px 0 60px}.section{padding:60px 0}.btn{padding:12px 24px;font-size:14px}}