:root{
    --gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
    --blue:#2980FE;
    --blue-dark:#1768E8;
    --text:#1F2937;
    --muted:#667085;
    --light:#F6F8FC;
    --border:#E6EAF2;
    --card:#FFFFFF;
    --shadow:0 16px 45px rgba(37, 56, 120, .10);
    --radius:24px;
}
*{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:1.7;font-size:16px;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1120px, calc(100% - 32px));margin:0 auto}
.narrow{width:min(820px, calc(100% - 32px))}
.section{padding:68px 0}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(230,234,242,.9)}
.header-inner{width:min(1180px, calc(100% - 28px));margin:0 auto;display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:18px}
.logo,.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#101828;letter-spacing:.2px}
.logo img,.footer-brand img{width:40px;height:40px;border-radius:12px;object-fit:cover;box-shadow:0 8px 20px rgba(41,128,254,.16)}
.nav-toggle{border:1px solid var(--border);background:#fff;border-radius:14px;width:44px;height:44px;font-size:22px;color:#344054}
.site-nav{display:none;position:absolute;left:16px;right:16px;top:76px;background:#fff;border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow);padding:12px}
.site-nav.is-open{display:grid;gap:4px}
.site-nav a{padding:12px 14px;border-radius:14px;color:#344054;font-weight:600;font-size:15px}
.site-nav a.active,.site-nav a:hover{background:#F0F6FF;color:var(--blue)}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 26px;border-radius:999px;background:var(--blue);color:#fff;font-weight:800;box-shadow:0 12px 24px rgba(41,128,254,.24);transition:.2s ease;white-space:nowrap}
.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px)}
.vpn-network-hero{position:relative;overflow:hidden;background:var(--gradient);color:#fff;padding:76px 0 52px}
.hero-pattern{position:absolute;inset:0;background:radial-gradient(circle at 15% 25%,rgba(255,255,255,.24),transparent 22%),radial-gradient(circle at 85% 15%,rgba(255,255,255,.18),transparent 20%),linear-gradient(135deg,rgba(255,255,255,.16) 1px,transparent 1px);background-size:auto,auto,42px 42px;opacity:.75}
.hero-grid{position:relative;display:grid;gap:34px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;width:max-content;border-radius:999px;padding:6px 12px;font-size:13px;font-weight:800;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.26);color:#fff;margin-bottom:14px}
.eyebrow.blue{background:#EEF5FF;color:var(--blue);border-color:#D7E8FF}.eyebrow.light{background:rgba(255,255,255,.18);color:#fff;border-color:rgba(255,255,255,.28)}
.hero-copy h1{font-size:clamp(34px,8vw,62px);line-height:1.08;margin:0 0 18px;letter-spacing:-1.5px}.hero-copy p{font-size:18px;max-width:650px;color:rgba(255,255,255,.88);margin:0 0 24px}.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.hero-tags span,.mini-cards span{border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.15);padding:7px 12px;border-radius:999px;font-size:14px;font-weight:700}
.hero-visual{position:relative;padding:22px;border-radius:32px;background:rgba(255,255,255,.13);box-shadow:0 30px 80px rgba(0,0,0,.18);border:1px solid rgba(255,255,255,.22)}
.hero-visual img{margin:auto;border-radius:28px}.float-card{position:absolute;background:#fff;color:#1D2939;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:16px;padding:10px 14px;font-weight:800;font-size:14px}.card-one{left:8px;top:18%}.card-two{right:10px;top:9%}.card-three{left:12px;bottom:14%}.card-four{right:10px;bottom:20%}
.section-heading{text-align:center;max-width:760px;margin:0 auto 34px}.section-heading h2,.content-panel h2,.privacy-grid h2,.protocol-grid h2,.nodes-copy h2{font-size:clamp(26px,5vw,40px);line-height:1.18;margin:0 0 14px;letter-spacing:-.6px}.section-heading p{color:var(--muted);margin:0}
.node-overview{display:grid;gap:16px}.node-card,.three-card-grid article,.risk-grid article,.process-steps article,.info-grid article{background:#fff;border:1px solid var(--border);border-radius:22px;padding:22px;box-shadow:0 10px 28px rgba(25,38,80,.06)}.node-card span{display:inline-flex;background:#EEF5FF;color:var(--blue);border-radius:999px;padding:4px 10px;font-weight:800;font-size:13px}.node-card h3,.three-card-grid h3,.risk-grid h3,.process-steps h3,.info-grid h3{margin:12px 0 8px;font-size:20px}.node-card p,.three-card-grid p,.risk-grid p,.process-steps p,.info-grid p,.content-panel p,.privacy-grid p,.protocol-grid p,.nodes-copy p,.article-card p,.safety-note p,.page-hero p{color:var(--muted)}.node-card a,.text-link,.risk-grid a,.process-steps a,.side-panel a{color:var(--blue);font-weight:800}.text-link.light{color:#fff}
.split-grid,.privacy-grid,.protocol-grid,.nodes-grid,.two-column,.article-layout{display:grid;gap:28px;align-items:center}.reverse{direction:ltr}.image-panel,.privacy-panel,.protocol-panel,.map-panel{background:#fff;border:1px solid var(--border);border-radius:28px;padding:22px;box-shadow:var(--shadow)}.image-panel img,.privacy-panel img,.protocol-panel img,.map-panel img,.article-image{border-radius:22px}.feature-list{padding-left:20px;color:#475467}.high-speed-section,.node-overview-section,.content-section{background:var(--light)}.global-nodes-section{background:var(--gradient);color:#fff;position:relative;overflow:hidden}.global-nodes-section:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 22% 35%,rgba(255,255,255,.2),transparent 24%),linear-gradient(135deg,rgba(255,255,255,.14) 1px,transparent 1px);background-size:auto,38px 38px}.global-nodes-section .container{position:relative}.nodes-copy p{color:rgba(255,255,255,.86)}.mini-cards{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}.speed-lines{display:grid;gap:12px;margin:18px 0}.speed-lines span,.privacy-tags span,.protocol-panel span{display:inline-flex;padding:10px 14px;border-radius:14px;background:#F0F6FF;color:#2557B8;font-weight:800}.privacy-tags,.protocol-panel{display:flex;flex-wrap:wrap;gap:10px}.protocol-panel{align-items:center}.three-card-grid,.risk-grid,.process-steps,.info-grid{display:grid;gap:16px}.center-link{text-align:center;margin-top:20px}.device-panel{background:linear-gradient(180deg,#fff,#F4F8FF)}
.page-hero{padding:72px 0;background:linear-gradient(180deg,#F3F7FF 0%,#fff 100%);text-align:center}.download-hero{background:var(--gradient);color:#fff}.download-hero p{color:rgba(255,255,255,.88)}.page-badge{display:inline-flex;border-radius:999px;background:#EEF5FF;color:var(--blue);padding:7px 13px;font-weight:800;margin-bottom:16px}.download-hero .page-badge{background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.28)}.page-hero h1{font-size:clamp(32px,7vw,52px);line-height:1.12;margin:0 0 14px;letter-spacing:-.8px}.page-hero .download-btn{margin-top:18px}.article-card,.safety-note,.side-panel{background:#fff;border:1px solid var(--border);border-radius:26px;box-shadow:var(--shadow);padding:24px}.article-card h2{font-size:24px;margin:24px 0 10px}.article-card h2:first-of-type{margin-top:0}.ordered-list{padding-left:22px;color:#475467}.ordered-list li{margin:12px 0}.side-panel{align-self:start;display:grid;gap:12px}.side-panel h3{margin:0}.side-panel a{display:block;padding:12px 14px;background:#F6F9FF;border:1px solid #E2ECFF;border-radius:14px}.tip-box{background:#F8FAFC;border-left:4px solid var(--blue);padding:14px;border-radius:14px;color:#475467}.faq-list{display:grid;gap:14px}.faq-list details{background:#fff;border:1px solid var(--border);border-radius:18px;padding:18px;box-shadow:0 8px 24px rgba(25,38,80,.05)}.faq-list summary{cursor:pointer;font-weight:800;color:#1D2939}.faq-list p{color:var(--muted);margin-bottom:0}.compact{max-width:860px;margin:0 auto}.cta-section{background:var(--gradient);color:#fff;text-align:center;padding:72px 0}.cta-section h2{font-size:clamp(28px,5vw,44px);margin:0 0 12px}.cta-section p{color:rgba(255,255,255,.86);max-width:700px;margin:0 auto 24px}.safety-panel{background:#fff}.risk-grid article{border-left:4px solid var(--blue)}.risk-grid strong{display:block;color:#344054;margin:12px 0;font-weight:700}.site-footer{background:#111827;color:#D0D5DD;padding:52px 0 0}.footer-grid{display:grid;gap:26px}.footer-grid h3{color:#fff;margin:0 0 10px}.footer-grid a{display:block;color:#D0D5DD;margin:8px 0}.footer-brand span{color:#fff}.footer-grid p{color:#AAB2C0}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);text-align:center;margin-top:34px;padding:18px;color:#98A2B3;font-size:14px}
@media (min-width: 700px){.node-overview,.three-card-grid,.risk-grid,.info-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.two-column{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
@media (min-width: 960px){.nav-toggle{display:none}.site-nav{display:flex;position:static;background:transparent;border:0;box-shadow:none;padding:0;gap:2px;align-items:center}.site-nav a{padding:8px 10px;font-size:14px}.hero-grid,.split-grid,.privacy-grid,.protocol-grid,.nodes-grid{grid-template-columns:1fr 1fr}.node-overview{grid-template-columns:repeat(4,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(4,1fr)}.article-layout{grid-template-columns:minmax(0,1fr) 300px}.section{padding:86px 0}.vpn-network-hero{padding:100px 0 80px}.hero-copy p{font-size:19px}.reverse .content-panel{order:1}.reverse .image-panel{order:2}}
@media (max-width: 420px){.container,.narrow{width:min(100% - 24px, 1120px)}.download-btn{width:100%;min-height:50px}.float-card{position:static;display:inline-flex;margin:6px 4px 0 0}.hero-visual{padding:16px}.article-card,.safety-note,.side-panel{padding:20px}.section{padding:54px 0}}