*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;color:#243044;background:#f6f8fc;line-height:1.7}a{color:#2980FE;text-decoration:none}img{max-width:100%;height:auto;display:block}.container{width:min(1120px,calc(100% - 32px));margin:0 auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid #e7ebf3}.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px;color:#172033;font-weight:800;font-size:20px}.logo{width:38px;height:38px;border-radius:12px;object-fit:cover}.main-nav{display:none;position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid #e8edf6;border-radius:24px;padding:14px;box-shadow:0 18px 50px rgba(29,45,77,.12)}.main-nav a{display:block;padding:11px 12px;border-radius:14px;color:#445168;font-size:15px}.main-nav a.active,.main-nav a:hover{background:#f0f6ff;color:#155ed7}.nav-download{font-weight:700}.nav-toggle{position:absolute;opacity:0;pointer-events:none}.nav-toggle-label{width:42px;height:42px;border:1px solid #e1e7f1;border-radius:14px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;background:#fff}.nav-toggle-label span{width:18px;height:2px;background:#243044;border-radius:2px}.nav-toggle:checked~.main-nav{display:block}.gradient-bg{background:linear-gradient(90deg,#3558F2 0%,#7B4EF1 50%,#B84DDA 100%)}.section{padding:68px 0}.section-soft{background:#eef4fb}.section-title{font-size:clamp(28px,4vw,44px);line-height:1.18;margin:0 0 16px;color:#172033;letter-spacing:-.04em}.section-lead{margin:0 0 26px;color:#59667b;font-size:17px}.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;padding:7px 12px;border-radius:999px;background:#edf5ff;color:#155ed7;font-size:13px;font-weight:800}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 24px;border-radius:999px;background:#2980FE;color:#fff;font-weight:800;box-shadow:0 14px 34px rgba(41,128,254,.26);transition:.2s ease}.download-btn:hover{background:#1768E8;color:#fff;transform:translateY(-1px)}.text-link{font-weight:800}.vpn-lab-hero{padding:72px 0 54px;color:#fff;overflow:hidden}.hero-grid{display:grid;gap:32px;align-items:center}.hero-content h1{font-size:clamp(36px,8vw,68px);line-height:1.05;letter-spacing:-.06em;margin:0 0 20px}.hero-content p{font-size:18px;color:rgba(255,255,255,.88);margin:0 0 24px}.hero-tags,.inline-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.hero-tags span,.inline-tags span{display:inline-flex;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);font-size:13px;font-weight:700}.hero-visual{position:relative;min-height:340px;display:flex;align-items:center;justify-content:center}.hero-device{position:relative;width:min(430px,92%);padding:20px;border-radius:34px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.26);box-shadow:0 32px 90px rgba(22,26,64,.28)}.hero-device img{border-radius:26px;margin:auto}.floating-card{position:absolute;display:inline-flex;align-items:center;gap:8px;padding:10px 13px;border-radius:16px;background:rgba(255,255,255,.94);color:#172033;box-shadow:0 20px 50px rgba(20,30,60,.18);font-weight:800;font-size:13px}.floating-card::before{content:"";width:8px;height:8px;border-radius:50%;background:#2980FE}.card-a{left:0;top:20px}.card-b{right:0;top:78px}.card-c{left:4px;bottom:64px}.card-d{right:12px;bottom:20px}.privacy-summary{margin-top:-34px;position:relative;z-index:4}.summary-grid{display:grid;gap:16px}.summary-card{background:#fff;border:1px solid #e7edf6;border-radius:28px;padding:24px;box-shadow:0 18px 44px rgba(29,45,77,.08)}.summary-card .tag{display:inline-block;padding:5px 10px;border-radius:999px;background:#edf5ff;color:#2980FE;font-weight:900;font-size:12px}.summary-card h2{font-size:22px;margin:14px 0 8px;color:#172033}.summary-card p{margin:0 0 14px;color:#59667b}.feature-split{display:grid;gap:28px;align-items:center}.feature-split.reverse .feature-copy{order:1}.feature-copy{background:#fff;border:1px solid #e8edf6;border-radius:32px;padding:28px;box-shadow:0 18px 54px rgba(38,52,84,.08)}.feature-copy ul{margin:18px 0 0;padding:0;list-style:none}.feature-copy li{padding:10px 0 10px 28px;position:relative;color:#475469;border-bottom:1px solid #eef2f7}.feature-copy li:last-child{border-bottom:0}.feature-copy li::before{content:"";position:absolute;left:0;top:19px;width:10px;height:10px;border-radius:50%;background:#2980FE}.feature-media{border-radius:34px;background:#fff;border:1px solid #e8edf6;padding:22px;box-shadow:0 22px 70px rgba(38,52,84,.08)}.feature-media img{margin:auto;border-radius:26px}.privacy-protection-section .privacy-panel{display:grid;gap:18px}.panel-card,.security-card{background:#fff;border:1px solid #e7edf6;border-radius:28px;padding:24px;box-shadow:0 16px 46px rgba(38,52,84,.07)}.panel-card h3,.security-card h3{margin:0 0 10px;color:#172033}.panel-card p,.security-card p{margin:0;color:#59667b}.no-log-policy-section .policy-grid,.encryption-protocol-section .tech-grid{display:grid;gap:16px}.global-nodes-section .node-strip{display:grid;gap:14px;margin-top:18px}.node-chip{padding:14px 16px;background:#f6f9fd;border:1px solid #e5ecf5;border-radius:18px}.high-speed-section{background:#eef5fb}.device-grid{display:grid;gap:16px}.device-card{background:#fff;border:1px solid #e7edf6;border-radius:24px;padding:22px}.device-card strong{display:block;color:#172033;margin-bottom:6px}.process-steps{display:grid;gap:16px;counter-reset:step}.step-card{counter-increment:step;background:#fff;border:1px solid #e7edf6;border-radius:26px;padding:22px;position:relative}.step-card::before{content:counter(step,decimal-leading-zero);display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:15px;background:#edf5ff;color:#2980FE;font-weight:900;margin-bottom:14px}.step-card h3{margin:0 0 8px;color:#172033}.step-card p{margin:0 0 12px;color:#59667b}.risk-grid{display:grid;gap:16px}.risk-card{background:#fff;border:1px solid #e7edf6;border-left:4px solid #2980FE;border-radius:22px;padding:20px}.risk-card h3{margin:0 0 8px;color:#172033}.risk-card p{margin:0 0 8px;color:#59667b}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid #e7edf6;border-radius:22px;padding:22px}.faq-item h2,.faq-item h3{margin:0 0 8px;color:#172033;font-size:20px}.faq-item p{margin:0;color:#59667b}.cta-section{padding:68px 0;color:#fff;text-align:center}.cta-section h2{font-size:clamp(28px,5vw,46px);margin:0 0 14px;letter-spacing:-.04em}.cta-section p{margin:0 auto 24px;color:rgba(255,255,255,.88);max-width:680px}.page-hero{padding:58px 0 36px;background:linear-gradient(180deg,#f4f8ff 0%,#fff 100%)}.page-hero-inner{max-width:860px}.page-hero h1{font-size:clamp(34px,6vw,56px);line-height:1.08;margin:0 0 16px;color:#172033;letter-spacing:-.05em}.page-hero p{font-size:18px;color:#59667b;margin:0}.badge{display:inline-flex;margin-bottom:14px;padding:7px 12px;border-radius:999px;background:#edf5ff;color:#155ed7;font-weight:900;font-size:13px}.content-layout{display:grid;gap:24px;align-items:start}.article-card{background:#fff;border:1px solid #e7edf6;border-radius:30px;padding:26px;box-shadow:0 18px 54px rgba(38,52,84,.07)}.article-card h2{font-size:26px;color:#172033;margin:0 0 12px}.article-card h3{font-size:21px;color:#172033;margin:22px 0 8px}.article-card p{color:#526077;margin:0 0 14px}.article-card ul,.article-card ol{margin:0 0 18px;padding-left:22px;color:#526077}.article-card li{margin:8px 0}.side-panel{background:#fff;border:1px solid #e7edf6;border-radius:28px;padding:22px;box-shadow:0 14px 44px rgba(38,52,84,.06)}.side-panel h2,.side-panel h3{margin:0 0 12px;color:#172033}.side-panel a{display:block;padding:10px 0;border-bottom:1px solid #eef2f7;font-weight:800}.side-panel a:last-child{border-bottom:0}.check-grid{display:grid;gap:12px;margin:18px 0}.check-item{padding:14px 16px;border-radius:18px;background:#f6f9fd;border:1px solid #e6edf6;color:#526077}.notice-box{padding:18px;border-radius:22px;background:#f3f8ff;border:1px solid #dbeafe;color:#41516a;margin:18px 0}.download-center{text-align:center;margin-top:24px}.download-page .steps{display:grid;gap:14px;margin-top:22px}.download-page .step-card::before{margin-bottom:10px}.site-footer{background:#172033;color:#c8d2e3;padding:54px 0 24px}.footer-grid{display:grid;gap:28px}.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:12px}.footer-brand img{width:36px;height:36px;border-radius:12px}.site-footer h3{color:#fff;margin:0 0 10px}.site-footer p{margin:0;color:#aab6ca}.site-footer a{display:block;color:#c8d2e3;padding:5px 0}.site-footer a:hover{color:#fff}.footer-bottom{display:flex;flex-direction:column;gap:10px;border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:18px;font-size:14px;color:#aab6ca}.footer-bottom a{display:inline;color:#c8d2e3}@media (min-width:720px){.summary-grid{grid-template-columns:repeat(3,1fr)}.privacy-protection-section .privacy-panel{grid-template-columns:repeat(3,1fr)}.no-log-policy-section .policy-grid,.encryption-protocol-section .tech-grid,.device-grid{grid-template-columns:repeat(3,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.risk-grid{grid-template-columns:repeat(2,1fr)}.download-page .steps{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}.footer-bottom{flex-direction:row;justify-content:space-between}}@media (min-width:960px){.site-header{position:sticky}.nav-toggle-label{display:none}.main-nav{display:flex;position:static;align-items:center;gap:2px;background:transparent;border:0;box-shadow:none;padding:0}.main-nav a{padding:9px 10px;font-size:14px}.hero-grid{grid-template-columns:1.02fr .98fr}.vpn-lab-hero{padding:96px 0 82px}.hero-content p{max-width:620px}.feature-split{grid-template-columns:1.05fr .95fr}.feature-split.reverse .feature-copy{order:0}.privacy-protection-section .feature-split{grid-template-columns:.85fr 1.15fr}.content-layout{grid-template-columns:minmax(0,1fr) 300px}.risk-grid{grid-template-columns:repeat(3,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.section{padding:86px 0}.page-hero{padding:76px 0 46px}}@media (max-width:420px){.container{width:min(100% - 24px,1120px)}.feature-copy,.article-card{padding:22px;border-radius:24px}.floating-card{position:static;margin:8px 6px 0}.hero-visual{display:block;min-height:auto}.hero-device{width:100%;margin-bottom:12px}.hero-tags span,.inline-tags span{font-size:12px}.download-btn{width:100%;padding-left:18px;padding-right:18px}.nav-download{font-weight:800}}