:root{
  --gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
  --blue:#2980FE;
  --blue-hover:#1768E8;
  --text:#1d2433;
  --muted:#647084;
  --soft:#f5f7fb;
  --soft-blue:#f1f6ff;
  --line:#e7ebf2;
  --white:#ffffff;
  --shadow:0 18px 45px rgba(30,49,91,.08);
  --radius:26px;
}
*{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:var(--text);background:#fff;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1120px, calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid rgba(231,235,242,.82)}
.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo,.footer-logo{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.03em;color:#182033}
.logo img,.footer-logo img{width:38px;height:38px;border-radius:12px;object-fit:cover;box-shadow:0 8px 24px rgba(41,128,254,.18)}
.main-nav{display:none;position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:12px;grid-template-columns:1fr;gap:4px}
.main-nav a{padding:10px 14px;border-radius:14px;color:#3a465a;font-size:15px}
.main-nav a:hover,.main-nav a.active{background:var(--soft-blue);color:var(--blue)}
.nav-download{font-weight:700;color:var(--blue)!important}
.nav-toggle{position:absolute;opacity:0;pointer-events:none}
.nav-toggle-label{width:42px;height:42px;border:1px solid var(--line);border-radius:14px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:5px;background:#fff}
.nav-toggle-label span{width:18px;height:2px;background:#263247;border-radius:99px}
.nav-toggle:checked ~ .main-nav{display:grid}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 24px;border-radius:999px;background:var(--blue);color:#fff!important;font-weight:800;box-shadow:0 14px 28px rgba(41,128,254,.25);transition:.2s ease;border:0;white-space:nowrap}
.download-btn:hover{background:var(--blue-hover);transform:translateY(-2px)}
.badge,.category-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(41,128,254,.1);color:var(--blue);font-weight:800;font-size:13px}
.section-title{font-size:30px;line-height:1.22;margin:0 0 14px;letter-spacing:-.03em;color:#152033}
.section-lead{color:var(--muted);font-size:16px;margin:0;max-width:760px}
.section-pad{padding:72px 0}
.vpn-lab-hero{background:var(--gradient);color:#fff;padding:68px 0 52px;position:relative;overflow:hidden}
.vpn-lab-hero:before,.cta-section:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 20%,rgba(255,255,255,.22),transparent 28%),radial-gradient(circle at 80% 30%,rgba(255,255,255,.16),transparent 24%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
.hero-copy h1{font-size:42px;line-height:1.12;margin:16px 0 18px;letter-spacing:-.04em}
.hero-copy p{color:rgba(255,255,255,.88);font-size:17px;max-width:620px;margin:0 0 24px}
.hero-tags,.floating-tags,.inline-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.hero-tags span,.floating-tags span,.inline-tags span{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.2);font-size:13px;font-weight:700}
.hero-visual{position:relative;min-height:280px;display:grid;place-items:center}
.hero-device{position:relative;width:min(360px,90%);padding:18px;border-radius:34px;background:rgba(255,255,255,.18);box-shadow:0 24px 80px rgba(17,34,84,.25);border:1px solid rgba(255,255,255,.22)}
.hero-device img{border-radius:24px;background:#fff}
.status-card{position:absolute;background:#fff;color:#182033;border-radius:18px;padding:12px 14px;box-shadow:0 16px 36px rgba(20,33,71,.18);font-size:13px;font-weight:800;border:1px solid rgba(255,255,255,.6)}
.status-card:nth-child(2){top:10px;left:0}.status-card:nth-child(3){right:0;top:62px}.status-card:nth-child(4){left:12px;bottom:32px}.status-card:nth-child(5){right:20px;bottom:0}
.privacy-summary{margin-top:-34px;position:relative;z-index:3}
.summary-grid{display:grid;grid-template-columns:1fr;gap:16px}
.summary-card,.security-card,.info-card,.risk-card,.faq-item,.step-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.summary-card{padding:24px}.summary-card strong{display:inline-flex;padding:5px 10px;border-radius:999px;background:var(--soft-blue);color:var(--blue);font-size:13px;margin-bottom:12px}.summary-card h3{margin:0 0 8px;font-size:20px}.summary-card p{margin:0 0 12px;color:var(--muted)}
.text-link{color:var(--blue);font-weight:800}.text-link:hover{text-decoration:underline}
.split-section{padding:76px 0}.split-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}.split-grid.reverse .media-panel{order:0}.media-panel{background:var(--soft);border:1px solid var(--line);border-radius:34px;padding:24px;position:relative;overflow:hidden}.media-panel:after{content:"";position:absolute;inset:auto -20% -40% auto;width:260px;height:260px;background:radial-gradient(circle,rgba(41,128,254,.13),transparent 68%)}.media-panel img{position:relative;z-index:1;border-radius:26px;margin:auto}.content-list{display:grid;gap:12px;margin:24px 0}.content-list li{list-style:none;padding:12px 14px;border-left:4px solid var(--blue);background:var(--soft-blue);border-radius:14px;color:#3a465a}
.privacy-protection-section,.high-speed-section,.faq-section{background:var(--soft)}
.protection-panel{display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px}.security-card{padding:24px}.security-card h3{margin:0 0 8px}.security-card p{margin:0;color:var(--muted)}
.no-log-policy-section .policy-grid,.encryption-protocol-section .protocol-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px}.info-card{padding:24px}.info-card h3{margin:0 0 8px;font-size:19px}.info-card p{margin:0;color:var(--muted)}
.node-map{background:#fff;border:1px solid var(--line);border-radius:34px;padding:20px;box-shadow:var(--shadow)}
.device-list{display:grid;grid-template-columns:1fr;gap:14px;margin-top:22px}.device-item{padding:18px;border:1px solid var(--line);border-radius:22px;background:#fff}.device-item h3{margin:0 0 6px}.device-item p{margin:0;color:var(--muted)}
.process-steps{background:#fff}.steps-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px}.step-card{padding:22px;position:relative}.step-num{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:12px;background:var(--blue);color:#fff;font-weight:900;margin-bottom:12px}.step-card h3{margin:0 0 8px}.step-card p{margin:0 0 10px;color:var(--muted)}
.safety-panel{background:var(--soft);padding:72px 0}.risk-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px}.risk-card{padding:22px;border-top:4px solid var(--blue)}.risk-card h3{margin:0 0 8px}.risk-card p{margin:0 0 8px;color:var(--muted)}.risk-card b{display:block;color:#293449;margin-top:10px}
.faq-list{display:grid;gap:14px;margin-top:28px}.faq-item{padding:22px}.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:var(--muted)}
.cta-section{position:relative;overflow:hidden;background:var(--gradient);color:#fff;text-align:center;padding:72px 0}.cta-inner{position:relative;max-width:760px;margin:auto}.cta-inner h2{font-size:32px;line-height:1.2;margin:0 0 14px}.cta-inner p{color:rgba(255,255,255,.88);margin:0 0 24px}
.page-hero{padding:62px 0 34px;background:linear-gradient(180deg,#f6f9ff 0%,#fff 100%)}.page-hero h1{font-size:38px;line-height:1.16;letter-spacing:-.04em;margin:16px 0 14px}.page-hero p{max-width:780px;color:var(--muted);font-size:17px;margin:0}
.page-layout{display:grid;grid-template-columns:1fr;gap:24px;padding:42px 0 72px}.article-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:26px;box-shadow:var(--shadow)}.article-card h2{margin:0 0 14px;font-size:24px}.article-card p{color:#4e5a6d;margin:0 0 16px}.article-card p:last-child{margin-bottom:0}.side-panel{display:grid;gap:16px}.tip-card,.checklist,.related-card{border:1px solid var(--line);background:var(--soft);border-radius:26px;padding:22px}.tip-card h3,.checklist h3,.related-card h3{margin:0 0 12px}.checklist ul,.tip-card ul{padding-left:18px;margin:0;color:#4e5a6d}.related-card a{display:block;color:var(--blue);font-weight:800;margin:8px 0}.page-download{margin-top:24px}.download-page .article-card{text-align:left}.install-steps{counter-reset:item;display:grid;gap:14px;margin:22px 0}.install-steps li{list-style:none;background:var(--soft-blue);border:1px solid #dce8ff;border-radius:18px;padding:14px 16px;color:#3b4860}.install-steps li:before{counter-increment:item;content:counter(item);display:inline-grid;place-items:center;width:26px;height:26px;margin-right:10px;border-radius:9px;background:var(--blue);color:#fff;font-weight:900}
.site-footer{background:#111827;color:#d8deea;padding:54px 0 0}.footer-grid{display:grid;grid-template-columns:1fr;gap:28px}.site-footer p{color:#aab4c4;margin:14px 0 0}.site-footer h3{font-size:16px;margin:0 0 14px;color:#fff}.site-footer a{display:block;color:#c7d2e2;margin:8px 0}.site-footer a:hover{color:#fff}.footer-bottom{margin-top:34px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);display:flex;flex-direction:column;gap:8px;color:#aab4c4;font-size:14px}.footer-logo img{width:34px;height:34px}.footer-logo span{color:#fff}
@media (min-width:700px){
  .summary-grid{grid-template-columns:repeat(3,1fr)}.protection-panel{grid-template-columns:repeat(3,1fr)}.no-log-policy-section .policy-grid,.encryption-protocol-section .protocol-grid{grid-template-columns:repeat(3,1fr)}.steps-grid{grid-template-columns:repeat(2,1fr)}.risk-grid{grid-template-columns:repeat(2,1fr)}.device-list{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}.footer-bottom{flex-direction:row;justify-content:space-between}.article-card{padding:34px}.page-hero h1{font-size:48px}
}
@media (min-width:960px){
  .main-nav{display:flex;position:static;box-shadow:none;border:0;background:transparent;padding:0;gap:4px;align-items:center}.nav-toggle-label{display:none}.hero-grid{grid-template-columns:1.08fr .92fr}.hero-copy h1{font-size:60px}.split-grid{grid-template-columns:1fr 1fr;gap:56px}.split-grid.reverse .media-panel{order:2}.section-title{font-size:42px}.risk-grid{grid-template-columns:repeat(4,1fr)}.steps-grid{grid-template-columns:repeat(3,1fr)}.page-layout{grid-template-columns:minmax(0,1fr) 320px;align-items:start}.side-panel{position:sticky;top:96px}.vpn-lab-hero{padding:92px 0 74px}.section-pad{padding:92px 0}.split-section{padding:96px 0}.site-header{background:rgba(255,255,255,.86)}
}
@media (max-width:420px){.container{width:min(100% - 24px,1120px)}.hero-copy h1{font-size:34px}.page-hero h1{font-size:32px}.download-btn{width:100%}.status-card{position:static;margin:8px 4px;display:inline-flex}.hero-device{width:100%}.floating-tags{display:grid;grid-template-columns:1fr 1fr}}