*{box-sizing:border-box}
:root{
  --blue:#2980FE;
  --blue-dark:#1768E8;
  --gradient:linear-gradient(90deg,#3558F2 0%,#7B4EF1 50%,#B84DDA 100%);
  --text:#1f2937;
  --muted:#5f6b7a;
  --light:#f4f7fb;
  --line:#e4e9f2;
  --card:#ffffff;
  --radius:24px;
  --shadow:0 18px 40px rgba(31,41,55,.08);
}
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,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(228,233,242,.8)}
.header-inner{width:min(1180px,calc(100% - 28px));margin:0 auto;min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;color:#202b45}.brand img{width:38px;height:38px;border-radius:12px;object-fit:cover}
.main-nav{display:none;gap:4px;align-items:center}.main-nav a{padding:9px 12px;border-radius:999px;color:#536075;font-size:14px;font-weight:600}.main-nav a:hover,.main-nav a.active{background:#eef4ff;color:var(--blue)}
.nav-toggle{display:none}.nav-toggle-label{display:flex;flex-direction:column;gap:5px;cursor:pointer;padding:8px}.nav-toggle-label span{width:24px;height:2px;background:#233047;border-radius:2px}
.nav-toggle:checked~.main-nav{display:flex;position:absolute;left:14px;right:14px;top:72px;flex-direction:column;align-items:stretch;background:#fff;padding:12px;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}.nav-toggle:checked~.main-nav a{padding:12px 14px}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;background:var(--blue);color:#fff;font-weight:800;box-shadow:0 14px 28px rgba(41,128,254,.28);transition:.2s ease;border:none}.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px)}
.section{padding:68px 0}.section-soft{background:#f6f8fc}.section-title{font-size:30px;line-height:1.25;margin:0 0 14px;color:#172033}.section-desc{color:var(--muted);margin:0 0 24px}.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:#eef4ff;color:var(--blue);font-size:13px;font-weight:800}
.vpn-network-hero{position:relative;overflow:hidden;color:#fff;background:var(--gradient)}.vpn-network-hero:before,.vpn-network-hero:after{content:"";position:absolute;border-radius:999px;background:rgba(255,255,255,.18);filter:blur(2px)}.vpn-network-hero:before{width:360px;height:360px;right:-120px;top:-90px}.vpn-network-hero:after{width:420px;height:420px;left:-180px;bottom:-160px}
.hero-grid{position:relative;z-index:1;min-height:650px;display:grid;gap:36px;align-items:center;padding:72px 0}.hero-content h1{margin:18px 0 16px;font-size:42px;line-height:1.15;letter-spacing:-.03em}.hero-content p{font-size:17px;color:rgba(255,255,255,.9);margin:0 0 26px}.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.hero-tags span,.status-card{border:1px solid rgba(255,255,255,.32);background:rgba(255,255,255,.14);color:#fff;border-radius:999px;padding:8px 12px;font-size:13px;font-weight:700}
.hero-visual{position:relative}.hero-visual .device-frame{position:relative;padding:18px;border-radius:32px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);box-shadow:0 30px 80px rgba(23,32,51,.25)}.hero-visual img{border-radius:24px;margin:auto}.status-card{position:absolute;box-shadow:0 16px 34px rgba(31,41,55,.18)}.status-card.one{left:0;top:10%}.status-card.two{right:0;top:28%}.status-card.three{left:8%;bottom:12%}.status-card.four{right:8%;bottom:3%}
.node-overview{display:grid;grid-template-columns:1fr;gap:16px;margin-top:-34px;position:relative;z-index:3}.node-card,.card,.mini-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 14px 32px rgba(31,41,55,.06)}.node-card strong{display:block;margin:8px 0;font-size:18px}.node-card p,.card p,.mini-card p{color:var(--muted);margin:0}.text-link{display:inline-flex;margin-top:16px;color:var(--blue);font-weight:800}
.split{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}.visual-card{background:#fff;border:1px solid var(--line);border-radius:32px;padding:24px;box-shadow:var(--shadow)}.visual-card img{border-radius:24px;margin:auto}.feature-list{display:grid;gap:12px;margin:20px 0}.feature-list div{padding:14px 16px;background:#f8fbff;border:1px solid #e6eefc;border-radius:16px;color:#3f4d63}.vpn-connection-section,.privacy-protection-section,.multi-device-section{background:#fff}
.global-nodes-section{position:relative;background:radial-gradient(circle at 20% 20%,rgba(41,128,254,.15),transparent 28%),radial-gradient(circle at 78% 35%,rgba(123,78,241,.12),transparent 24%),#f6f8fc}.map-panel{min-height:360px;border-radius:32px;padding:24px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);position:relative;overflow:hidden}.map-panel:before{content:"";position:absolute;inset:28px;background-image:linear-gradient(90deg,rgba(41,128,254,.08) 1px,transparent 1px),linear-gradient(0deg,rgba(41,128,254,.08) 1px,transparent 1px);background-size:42px 42px;border-radius:24px}.node-dot{position:absolute;width:13px;height:13px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 8px rgba(41,128,254,.12)}.node-dot.a{left:24%;top:35%}.node-dot.b{left:52%;top:48%}.node-dot.c{right:20%;top:28%}.node-dot.d{right:30%;bottom:24%}
.high-speed-section{background:#f7f9fd}.speed-cards{display:grid;gap:14px}.speed-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.speed-bar{height:8px;background:#eaf1ff;border-radius:99px;overflow:hidden;margin-top:12px}.speed-bar span{display:block;height:100%;background:var(--blue);border-radius:99px}.privacy-panel{background:#fff;border:1px solid var(--line);border-radius:32px;padding:26px;box-shadow:var(--shadow)}.privacy-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.privacy-tags span{background:#eef4ff;color:var(--blue);border-radius:999px;padding:8px 12px;font-weight:700;font-size:13px}.no-log-policy-section{background:#f6f8fc}
.three-grid,.risk-grid,.faq-grid,.related-grid{display:grid;grid-template-columns:1fr;gap:16px}.process-steps{display:grid;grid-template-columns:1fr;gap:16px;counter-reset:step}.step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px}.step-card .num{width:34px;height:34px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:#eef4ff;color:var(--blue);font-weight:900;margin-bottom:12px}.risk-grid .card{border-left:4px solid var(--blue)}.faq-item{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px}.faq-item h3{margin:0 0 8px;font-size:17px}.faq-item p{margin:0;color:var(--muted)}
.cta-section{background:var(--gradient);color:#fff;text-align:center;padding:70px 0}.cta-section .container{max-width:780px}.cta-section h2{font-size:32px;margin:0 0 14px}.cta-section p{color:rgba(255,255,255,.9);margin:0 0 26px}.page-hero{background:linear-gradient(180deg,#f4f8ff 0%,#fff 100%);padding:58px 0 34px}.page-hero h1{font-size:36px;line-height:1.22;margin:16px 0 12px}.page-hero p{color:var(--muted);max-width:760px;margin:0}.content-layout{display:grid;grid-template-columns:1fr;gap:24px;padding:44px 0 72px}.article-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:26px;box-shadow:0 14px 32px rgba(31,41,55,.05)}.article-card h2{margin:0 0 12px;font-size:24px}.article-card p{color:#4b5870}.side-panel{background:#f8fbff;border:1px solid #e5eefc;border-radius:24px;padding:22px;align-self:start}.side-panel a{display:block;color:var(--blue);font-weight:800;margin:10px 0}.check-list{padding:0;margin:16px 0 0;list-style:none;display:grid;gap:10px}.check-list li{padding-left:28px;position:relative;color:#4b5870}.check-list li:before{content:"";position:absolute;left:0;top:.55em;width:12px;height:12px;border-radius:50%;background:var(--blue)}.download-panel{background:#fff;border:1px solid var(--line);border-radius:30px;padding:30px;box-shadow:var(--shadow);text-align:center}.download-steps{display:grid;gap:14px;margin:26px 0;text-align:left}.download-steps div{background:#f8fbff;border:1px solid #e6eefc;border-radius:18px;padding:16px}
.site-footer{background:#162033;color:#d9e2ef;padding-top:56px}.footer-grid{display:grid;grid-template-columns:1fr;gap:28px}.footer-brand{font-size:24px;font-weight:900;color:#fff;margin-bottom:12px}.site-footer h3{color:#fff;margin:0 0 12px}.site-footer a{display:block;color:#d9e2ef;margin:8px 0}.site-footer p{color:#b9c5d6;margin:0}.footer-bottom{text-align:center;color:#aab7c8;border-top:1px solid rgba(255,255,255,.1);padding:18px;margin-top:34px}
@media (min-width:700px){.node-overview{grid-template-columns:repeat(2,1fr)}.three-grid,.risk-grid,.faq-grid,.related-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.2fr 1fr 1fr 1fr}}
@media (min-width:980px){.nav-toggle-label{display:none}.main-nav{display:flex}.hero-grid{grid-template-columns:1.02fr .98fr}.hero-content h1{font-size:58px}.node-overview{grid-template-columns:repeat(4,1fr)}.split{grid-template-columns:1fr 1fr}.split.reverse .visual-card{order:-1}.three-grid{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(3,1fr)}.faq-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.content-layout{grid-template-columns:minmax(0,1fr) 320px}.section-title{font-size:38px}}
@media (max-width:520px){.container{width:min(100% - 24px,1120px)}.header-inner{width:min(100% - 24px,1180px)}.hero-content h1{font-size:34px}.page-hero h1{font-size:30px}.section{padding:52px 0}.status-card{position:static;display:inline-flex;margin:8px 8px 0 0}.download-btn{width:100%}}