:root{
  --gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
  --blue:#2980FE;
  --blue-dark:#1768E8;
  --text:#1f2937;
  --muted:#667085;
  --light:#f5f7fb;
  --soft:#eef4ff;
  --line:#e5eaf3;
  --white:#ffffff;
  --shadow:0 18px 48px rgba(30,64,175,.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;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
main{background:#fff}.container{width:min(1120px,calc(100% - 32px));margin:0 auto}.narrow-container{width:min(880px,calc(100% - 32px));margin:0 auto}.section{padding:64px 0}.section-soft{background:var(--light)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(229,234,243,.9)}
.header-inner{width:min(1180px,calc(100% - 28px));margin:0 auto;display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:20px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#17305f}.logo-img{width:38px;height:38px;border-radius:12px;object-fit:cover}.brand-name{font-size:20px;letter-spacing:.04em}.site-nav{display:flex;align-items:center;gap:6px}.site-nav a{font-size:15px;color:#4b5563;padding:9px 12px;border-radius:999px}.site-nav a:hover,.site-nav a.active{background:#eef4ff;color:#1d4ed8}.nav-toggle,.nav-toggle-label{display:none}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 24px;border-radius:999px;background:var(--blue);color:#fff!important;font-weight:800;letter-spacing:.02em;box-shadow:0 14px 30px rgba(41,128,254,.24);transition:.2s ease}.download-btn:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 18px 34px rgba(23,104,232,.28)}
.eyebrow,.category-badge{display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:999px;background:#eef4ff;color:#1d4ed8;font-size:13px;font-weight:700}.section-title{font-size:32px;line-height:1.24;margin:14px 0 12px;color:#101828}.section-desc{font-size:17px;color:var(--muted);margin:0 0 26px}.text-link{color:#1d4ed8;font-weight:700}.text-link:hover{text-decoration:underline}.tag-row{display:flex;flex-wrap:wrap;gap:10px}.tag{display:inline-flex;padding:6px 10px;border-radius:999px;background:#f3f6fb;border:1px solid var(--line);color:#475467;font-size:13px}.white-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.vpn-network-hero{position:relative;color:#fff;background:var(--gradient);overflow:hidden}.vpn-network-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 20%,rgba(255,255,255,.22),transparent 30%),radial-gradient(circle at 80% 30%,rgba(255,255,255,.16),transparent 28%),linear-gradient(135deg,rgba(255,255,255,.15) 1px,transparent 1px);background-size:auto,auto,54px 54px;opacity:.9}.hero-inner{position:relative;width:min(1180px,calc(100% - 32px));margin:0 auto;padding:76px 0 90px;display:grid;grid-template-columns:1fr;gap:38px;align-items:center}.hero-content h1{font-size:42px;line-height:1.15;margin:14px 0 16px;letter-spacing:-.03em}.hero-content p{font-size:17px;color:rgba(255,255,255,.88);margin:0 0 24px;max-width:640px}.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.hero-tags span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);border-radius:999px;padding:7px 12px;font-size:13px}.hero-visual{position:relative;min-height:360px;display:flex;align-items:center;justify-content:center}.hero-card{width:min(430px,100%);padding:18px;border-radius:30px;background:rgba(255,255,255,.17);border:1px solid rgba(255,255,255,.28);box-shadow:0 30px 80px rgba(20,20,90,.18);backdrop-filter:blur(12px)}.hero-card img{border-radius:24px;margin:auto}.floating-status{position:absolute;background:#fff;color:#17305f;border-radius:16px;padding:10px 14px;box-shadow:0 14px 40px rgba(15,23,42,.16);font-size:13px;font-weight:800}.status-a{left:4%;top:14%}.status-b{right:2%;top:22%}.status-c{left:10%;bottom:14%}.status-d{right:8%;bottom:10%}
.node-overview{margin-top:-36px;position:relative;z-index:5}.node-overview-grid{display:grid;grid-template-columns:1fr;gap:16px}.node-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 16px 36px rgba(20,40,90,.08)}.node-card small{color:var(--blue);font-weight:800}.node-card h3{font-size:20px;margin:8px 0 8px}.node-card p{color:var(--muted);margin:0 0 12px;font-size:15px}
.feature-split{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}.feature-image{background:linear-gradient(180deg,#f7fbff,#eef4ff);border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:var(--shadow)}.feature-list{display:grid;gap:12px;margin:22px 0}.feature-list div{padding:14px 16px;border-radius:16px;background:#fff;border:1px solid var(--line);color:#475467}.feature-list strong{display:block;color:#111827;margin-bottom:2px}
.vpn-connection-section{background:#fff}.global-nodes-section{position:relative;background:#f7f9fd;overflow:hidden}.global-nodes-section:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 22% 30%,rgba(41,128,254,.12),transparent 26%),radial-gradient(circle at 80% 40%,rgba(123,78,241,.10),transparent 30%),linear-gradient(90deg,rgba(41,128,254,.08) 1px,transparent 1px),linear-gradient(0deg,rgba(41,128,254,.08) 1px,transparent 1px);background-size:auto,auto,80px 80px,80px 80px}.global-nodes-section .container{position:relative}.node-map-panel{padding:24px}.node-tip-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:18px}.node-tip{background:rgba(255,255,255,.88);border:1px solid var(--line);border-radius:18px;padding:16px}.high-speed-section{background:#f5f8ff}.speed-cards{display:grid;gap:14px;margin-top:20px}.speed-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}.speed-card span{display:block;height:8px;border-radius:999px;background:linear-gradient(90deg,#cfe0ff,#2980FE);margin:10px 0}.privacy-protection-section{background:#fff}.privacy-panel{padding:24px}.privacy-matrix{display:grid;gap:12px}.privacy-matrix div{background:#f8fafc;border:1px solid var(--line);border-radius:18px;padding:16px}.no-log-policy-section{background:#f7f9fd}.policy-grid{display:grid;grid-template-columns:1fr;gap:16px}.policy-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px}.multi-device-section{background:#fff}.device-grid{display:grid;gap:14px;margin-top:20px}.device-card{border:1px solid var(--line);background:#fff;border-radius:18px;padding:16px}.encryption-protocol-section{background:#f5f7fb}.tech-panel{display:grid;gap:16px}.tech-item{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px}.tech-item code{display:inline-block;background:#eef4ff;color:#1d4ed8;border-radius:999px;padding:4px 9px;font-family:inherit;font-weight:800}.process-steps{display:grid;grid-template-columns:1fr;gap:14px}.step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px}.step-num{width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:12px}.risk-grid{display:grid;grid-template-columns:1fr;gap:16px}.risk-card{background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:18px;padding:18px}.risk-card h3,.faq-item h3{margin:0 0 8px;font-size:18px}.risk-card p,.faq-item p{margin:0;color:var(--muted)}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.cta-section{background:var(--gradient);color:#fff;text-align:center;position:relative;overflow:hidden}.cta-section:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 20%,rgba(255,255,255,.20),transparent 30%),radial-gradient(circle at 80% 20%,rgba(255,255,255,.14),transparent 28%)}.cta-section .container{position:relative}.cta-section h2{font-size:32px;margin:0 0 12px}.cta-section p{margin:0 auto 22px;color:rgba(255,255,255,.86);max-width:680px}
.page-hero{padding:62px 0 36px;background:linear-gradient(180deg,#f8fbff,#fff)}.page-hero h1{font-size:36px;line-height:1.2;margin:14px 0 12px}.page-hero p{color:var(--muted);font-size:17px;margin:0;max-width:800px}.page-layout{display:grid;grid-template-columns:1fr;gap:24px}.article-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 12px 34px rgba(15,23,42,.06)}.article-card h2{font-size:24px;margin:0 0 12px}.article-card p{color:#4b5563;margin:0 0 16px}.check-list,.ordered-list{display:grid;gap:12px;margin:18px 0;padding:0;list-style:none}.check-list li,.ordered-list li{background:#f8fafc;border:1px solid var(--line);border-radius:16px;padding:14px 16px}.ordered-list{counter-reset:item}.ordered-list li:before{counter-increment:item;content:counter(item);display:inline-flex;width:26px;height:26px;border-radius:50%;align-items:center;justify-content:center;background:#eef4ff;color:#1d4ed8;font-weight:800;margin-right:8px}.aside-panel{background:#f8fafc;border:1px solid var(--line);border-radius:24px;padding:22px;height:max-content}.aside-panel h2,.aside-panel h3{margin-top:0}.aside-panel a{display:block;color:#1d4ed8;font-weight:700;margin:8px 0}.download-zone{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}.download-page-steps{display:grid;grid-template-columns:1fr;gap:14px}.download-page-steps div{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px}.site-footer{background:#101828;color:#d0d5dd}.footer-inner{width:min(1180px,calc(100% - 32px));margin:0 auto;padding:46px 0;display:grid;grid-template-columns:1fr;gap:30px}.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:12px}.footer-logo img{width:36px;height:36px;border-radius:10px;object-fit:cover}.footer-brand p{margin:0;color:#98a2b3;max-width:520px}.footer-links{display:grid;grid-template-columns:1fr;gap:20px}.footer-links h3{color:#fff;margin:0 0 10px;font-size:16px}.footer-links a{display:block;color:#98a2b3;margin:6px 0}.footer-links a:hover{color:#fff}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.08);padding:16px;color:#98a2b3;font-size:14px}
@media (max-width: 820px){.nav-toggle-label{display:flex;width:42px;height:42px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border:1px solid var(--line);border-radius:12px}.nav-toggle-label span{display:block;width:20px;height:2px;background:#1f2937;border-radius:999px}.site-nav{position:absolute;left:14px;right:14px;top:68px;display:none;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow)}.nav-toggle:checked ~ .site-nav{display:flex}.site-nav a{padding:12px 14px}.hero-content h1{font-size:34px}.section{padding:48px 0}.floating-status{position:static;margin:8px;display:inline-flex}.hero-visual{display:block;min-height:0}.hero-card{margin:0 auto 10px}.page-hero h1{font-size:32px}}
@media (min-width: 700px){.node-overview-grid{grid-template-columns:repeat(2,1fr)}.policy-grid,.risk-grid,.footer-links{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.download-page-steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width: 980px){.hero-inner{grid-template-columns:1.05fr .95fr}.hero-content h1{font-size:56px}.feature-split{grid-template-columns:1fr 1fr}.feature-split.reverse .feature-copy{order:2}.feature-split.reverse .feature-image{order:1}.node-overview-grid{grid-template-columns:repeat(4,1fr)}.node-tip-grid,.speed-cards,.device-grid{grid-template-columns:repeat(3,1fr)}.privacy-matrix{grid-template-columns:repeat(3,1fr)}.policy-grid{grid-template-columns:repeat(3,1fr)}.tech-panel{grid-template-columns:repeat(3,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(4,1fr)}.page-layout{grid-template-columns:minmax(0,1fr) 300px}.footer-inner{grid-template-columns:.9fr 1.1fr}.footer-links{grid-template-columns:repeat(3,1fr)}}