:root{
  --primary:#2980FE;
  --primary-dark:#1768E8;
  --gradient:linear-gradient(90deg,#3558F2 0%,#7B4EF1 50%,#B84DDA 100%);
  --text:#202938;
  --muted:#667085;
  --light:#F5F7FB;
  --line:#E6EAF2;
  --card:#FFFFFF;
  --soft:#EEF5FF;
  --radius:24px;
  --shadow:0 18px 50px rgba(35,53,92,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","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,.94);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.header-inner{width:min(1180px,calc(100% - 28px));margin:0 auto;min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:#152238;letter-spacing:.2px}
.logo img{width:38px;height:38px;border-radius:12px;object-fit:cover;box-shadow:0 8px 24px rgba(41,128,254,.16)}
.site-nav{display:none;position:absolute;left:14px;right:14px;top:68px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--shadow)}
.site-nav.is-open{display:grid;gap:6px}
.site-nav a{padding:10px 12px;border-radius:12px;color:#344054;font-size:14px}
.site-nav a:hover{background:var(--soft);color:var(--primary)}
.nav-toggle{width:42px;height:42px;border:1px solid var(--line);border-radius:14px;background:#fff;display:grid;place-items:center;gap:4px;padding:10px;cursor:pointer}
.nav-toggle span{width:18px;height:2px;background:#1d2939;border-radius:2px}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 24px;border-radius:999px;background:var(--primary);color:#fff!important;font-weight:800;box-shadow:0 12px 28px rgba(41,128,254,.26);transition:.22s ease;border:0;white-space:nowrap}
.download-btn:hover{background:var(--primary-dark);transform:translateY(-1px)}
.section{padding:64px 0}.section-soft{background:var(--light)}
.section-title{font-size:28px;line-height:1.25;margin:0 0 14px;letter-spacing:-.02em}.section-lead{color:var(--muted);max-width:760px;margin:0 0 28px}.small-link{color:var(--primary);font-weight:700}.small-link:hover{text-decoration:underline}.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:#EAF2FF;color:var(--primary);font-size:13px;font-weight:800;margin-bottom:14px}.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.tag,.hero-tag{padding:7px 12px;border-radius:999px;background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.28);font-size:13px}.pill{display:inline-flex;padding:6px 10px;border-radius:999px;background:#EAF2FF;color:var(--primary);font-size:12px;font-weight:800}
.vpn-network-hero{position:relative;overflow:hidden;background:var(--gradient);color:#fff;padding:58px 0 76px}.vpn-network-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 10%,rgba(255,255,255,.28),transparent 24%),radial-gradient(circle at 80% 35%,rgba(255,255,255,.16),transparent 26%),linear-gradient(120deg,rgba(255,255,255,.16) 1px,transparent 1px);background-size:auto,auto,48px 48px;opacity:.95}.hero-grid{position:relative;display:grid;gap:36px;align-items:center}.hero-copy h1{font-size:38px;line-height:1.14;margin:0 0 18px;letter-spacing:-.04em}.hero-copy p{font-size:16px;max-width:660px;margin:0 0 22px;color:rgba(255,255,255,.9)}.hero-visual{position:relative;min-height:340px;display:grid;place-items:center}.hero-visual .product{width:min(430px,88%);border-radius:28px;filter:drop-shadow(0 28px 60px rgba(15,23,42,.24))}.floating-card{position:absolute;background:rgba(255,255,255,.94);color:#152238;border:1px solid rgba(255,255,255,.5);border-radius:18px;padding:12px 14px;box-shadow:0 18px 42px rgba(15,23,42,.14);font-weight:800;font-size:13px}.floating-card small{display:block;color:var(--muted);font-weight:600}.fc-1{top:20px;left:6px}.fc-2{top:62px;right:0}.fc-3{bottom:54px;left:20px}.fc-4{bottom:18px;right:28px}.hero-panel{margin-top:24px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.hero-panel div{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);border-radius:18px;padding:13px}.hero-panel strong{display:block;font-size:15px}.hero-panel span{font-size:12px;color:rgba(255,255,255,.82)}
.node-overview{display:grid;gap:16px;margin-top:-36px;position:relative;z-index:2}.node-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 14px 38px rgba(28,47,88,.08)}.node-card h3{margin:10px 0 8px;font-size:18px}.node-card p{margin:0 0 12px;color:var(--muted);font-size:14px}
.feature-grid,.two-col{display:grid;gap:26px;align-items:center}.feature-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}.feature-panel ul{padding-left:18px;color:#475467;margin:14px 0 18px}.image-frame{position:relative;background:linear-gradient(180deg,#fff,#F3F7FF);border:1px solid var(--line);border-radius:30px;padding:18px;box-shadow:var(--shadow);overflow:hidden}.image-frame:after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;right:-80px;top:-80px;background:rgba(41,128,254,.12)}.image-frame img{position:relative;z-index:1;margin:auto;border-radius:22px}.global-nodes-section{background:linear-gradient(180deg,#F7FAFF 0%,#fff 100%)}.map-panel{position:relative;overflow:hidden;border-radius:32px;background:#fff;border:1px solid var(--line);padding:28px;box-shadow:var(--shadow)}.map-panel:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 25% 35%,rgba(41,128,254,.20) 0 6px,transparent 7px),radial-gradient(circle at 70% 45%,rgba(123,78,241,.18) 0 6px,transparent 7px),radial-gradient(circle at 52% 70%,rgba(184,77,218,.16) 0 5px,transparent 6px),linear-gradient(30deg,transparent 48%,rgba(41,128,254,.13) 49%,rgba(41,128,254,.13) 51%,transparent 52%);opacity:.9}.map-panel>*{position:relative}.speed-card{display:grid;gap:14px}.speed-line{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}.speed-line span{display:block;height:8px;border-radius:999px;margin-top:10px;background:linear-gradient(90deg,#D9E8FF,#2980FE)}.privacy-board{display:grid;gap:16px}.privacy-item,.policy-card,.risk-card,.faq-item,.step-card,.info-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px}.privacy-item strong,.policy-card strong,.risk-card strong,.step-card strong{display:block;margin-bottom:6px}.privacy-item p,.policy-card p,.risk-card p,.step-card p,.info-card p{margin:0;color:var(--muted)}.no-log-policy-section .policy-grid,.risk-grid,.faq-grid{display:grid;gap:16px}.multi-device-section .device-list{display:grid;grid-template-columns:1fr;gap:14px}.device-list div{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}.tech-panel{display:grid;gap:14px}.tech-row{background:#fff;border:1px solid var(--line);border-left:4px solid var(--primary);border-radius:18px;padding:16px}.process-steps{display:grid;gap:16px}.step-num{width:34px;height:34px;border-radius:12px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900;margin-bottom:12px}.risk-card{border-left:4px solid var(--primary)}.faq-item h3{margin:0 0 8px;font-size:17px}.faq-item p{margin:0;color:var(--muted)}.cta-section{margin:40px auto 0;border-radius:32px;background:var(--gradient);color:#fff;text-align:center;padding:44px 24px;position:relative;overflow:hidden}.cta-section:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 20%,rgba(255,255,255,.26),transparent 28%),radial-gradient(circle at 80% 60%,rgba(255,255,255,.18),transparent 24%)}.cta-section>*{position:relative}.cta-section p{color:rgba(255,255,255,.88);max-width:720px;margin:0 auto 22px}
.page-hero{background:linear-gradient(180deg,#F5F8FF,#fff);padding:54px 0 28px}.page-hero h1{font-size:34px;line-height:1.24;margin:0 0 14px}.page-hero p{color:var(--muted);max-width:820px;margin:0}.content-layout{display:grid;gap:24px;align-items:start}.article-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:26px;box-shadow:var(--shadow)}.article-card h2{font-size:22px;margin:0 0 12px}.article-card p{color:#475467}.side-panel{background:#F7FAFF;border:1px solid var(--line);border-radius:24px;padding:22px}.side-panel a{display:block;color:var(--primary);font-weight:700;margin-top:10px}.check-list{display:grid;gap:12px;margin:18px 0}.check-list div{padding:14px 16px;border-radius:16px;background:#F8FAFC;border:1px solid var(--line)}.download-center{display:grid;place-items:center;margin:24px 0}.site-footer{background:#111827;color:#D0D5DD;margin-top:60px}.footer-grid{display:grid;gap:24px;padding:44px 0}.footer-brand{font-size:20px;font-weight:900;color:#fff;margin-bottom:10px}.site-footer h3{color:#fff;margin:0 0 10px;font-size:15px}.site-footer a{display:block;color:#D0D5DD;margin:7px 0}.site-footer p{margin:0;color:#98A2B3}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.10);padding:18px;color:#98A2B3;font-size:13px}
@media (min-width:640px){.node-overview{grid-template-columns:repeat(2,1fr)}.risk-grid,.faq-grid,.process-steps{grid-template-columns:repeat(2,1fr)}.multi-device-section .device-list{grid-template-columns:repeat(3,1fr)}}
@media (min-width:900px){.nav-toggle{display:none}.site-nav{display:flex;position:static;box-shadow:none;border:0;background:transparent;padding:0;gap:4px;align-items:center}.hero-grid{grid-template-columns:1.03fr .97fr}.hero-copy h1{font-size:58px}.vpn-network-hero{padding:82px 0 104px}.node-overview{grid-template-columns:repeat(4,1fr)}.two-col,.feature-grid{grid-template-columns:1fr 1fr}.privacy-board{grid-template-columns:1fr 1fr}.no-log-policy-section .policy-grid{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(4,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.content-layout{grid-template-columns:minmax(0,1fr) 320px}.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}.section{padding:84px 0}.section-title{font-size:36px}.page-hero h1{font-size:44px}}
@media (max-width:430px){.container{width:min(100% - 24px,1120px)}.hero-copy h1{font-size:32px}.hero-panel{grid-template-columns:1fr}.floating-card{position:static;margin:8px;display:inline-block}.hero-visual{display:block;text-align:center;min-height:auto}.hero-visual .product{margin:10px auto}.section{padding:48px 0}.article-card{padding:20px}.download-btn{width:100%;padding:13px 18px}}