:root{
  --gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
  --blue:#2980FE;
  --blue-dark:#1768E8;
  --text:#182033;
  --muted:#667085;
  --light:#F5F7FB;
  --lighter:#F8FAFF;
  --border:#E6EAF2;
  --card:#FFFFFF;
  --shadow:0 18px 44px rgba(24,32,51,.08);
  --radius:28px;
}
*{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:1.72;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1120px, calc(100% - 36px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(230,234,242,.86)}
.nav-shell{width:min(1180px, calc(100% - 28px));margin:0 auto;min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand,.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#17233f;letter-spacing:.2px}
.logo-img,.footer-brand img{width:40px;height:40px;border-radius:13px;object-fit:cover;box-shadow:0 8px 18px rgba(41,128,254,.16)}
.brand-text{font-size:18px;white-space:nowrap}.site-nav{display:none;align-items:center;gap:4px;position:absolute;top:68px;left:14px;right:14px;background:#fff;border:1px solid var(--border);border-radius:22px;padding:10px;box-shadow:var(--shadow)}
.site-nav.open{display:grid}.site-nav a{padding:11px 13px;border-radius:14px;color:#43506b;font-size:14px;font-weight:650}.site-nav a:hover,.site-nav a.active{background:#EFF5FF;color:var(--blue)}
.nav-toggle{width:42px;height:42px;border:1px solid var(--border);border-radius:14px;background:#fff;display:grid;place-items:center;gap:4px;padding:10px}.nav-toggle span{display:block;width:18px;height:2px;background:#1f2a44;border-radius:99px}
.vpn-saas-hero{position:relative;overflow:hidden;background:var(--gradient);color:#fff;border-bottom-left-radius:34px;border-bottom-right-radius:34px}.vpn-saas-hero:after{content:"";position:absolute;left:-8%;right:-8%;bottom:-72px;height:150px;background:#fff;transform:skewY(-4deg);transform-origin:0 0}.hero-inner{position:relative;z-index:1;width:min(1180px,calc(100% - 36px));margin:0 auto;padding:72px 0 108px;display:grid;gap:34px}.eyebrow,.badge{display:inline-flex;align-items:center;width:max-content;padding:7px 12px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);font-size:13px;font-weight:700}.page-badge{display:inline-flex;padding:7px 12px;border-radius:999px;background:#EEF5FF;color:var(--blue);font-size:13px;font-weight:800}.hero-copy h1{margin:18px 0 18px;font-size:clamp(34px,8vw,62px);line-height:1.08;letter-spacing:-1.5px}.hero-copy p{font-size:17px;color:rgba(255,255,255,.86);max-width:620px;margin:0 0 24px}.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.hero-tags span{border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.12);padding:8px 11px;border-radius:999px;color:rgba(255,255,255,.92);font-size:13px}.hero-visual{position:relative;min-height:300px;display:grid;place-items:center}.hero-device{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.24);box-shadow:0 24px 70px rgba(12,22,54,.28);border-radius:36px;padding:18px;max-width:430px}.floating-card{position:absolute;background:#fff;color:#17233f;border-radius:18px;padding:10px 13px;box-shadow:0 16px 34px rgba(24,32,51,.14);font-size:13px;font-weight:800}.float-1{left:0;top:22px}.float-2{right:4px;top:62px}.float-3{left:8px;bottom:44px}.float-4{right:18px;bottom:16px}
.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!important;font-weight:800;box-shadow:0 12px 26px rgba(41,128,254,.22);transition:.2s ease;border:0;white-space:nowrap}.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px)}
.section{padding:64px 0}.section-soft{background:var(--lighter)}.section-title{max-width:740px;margin:0 auto 28px;text-align:center}.section-title.left{text-align:left;margin-left:0}.section-title h2{font-size:clamp(26px,5vw,42px);line-height:1.18;margin:0 0 12px;letter-spacing:-.8px}.section-title p{color:var(--muted);margin:0}.product-highlights{margin-top:-44px;position:relative;z-index:3}.highlight-grid{display:grid;gap:16px}.highlight-card{background:#fff;border:1px solid var(--border);border-radius:24px;padding:22px;box-shadow:0 16px 36px rgba(24,32,51,.07)}.highlight-card .tag{display:inline-flex;color:var(--blue);background:#EEF5FF;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:800}.highlight-card h3{margin:14px 0 8px;font-size:20px}.highlight-card p,.feature-copy p,.page-summary,.faq-answer,.muted{color:var(--muted)}.text-link{color:var(--blue);font-weight:800;display:inline-flex;margin-top:10px}
.feature-panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;display:grid;gap:24px;align-items:center}.feature-copy h2{font-size:clamp(26px,5vw,40px);line-height:1.18;margin:0 0 12px}.feature-copy ul{padding-left:18px;color:#3f4c66;margin:14px 0}.feature-image{border-radius:26px;background:linear-gradient(135deg,#EFF5FF,#F8F0FF);padding:16px;overflow:hidden}.feature-image img{border-radius:20px;margin:auto}.vpn-connection-section .feature-panel,.high-speed-section .feature-panel,.global-nodes-section .feature-panel,.multi-device-section .feature-panel{grid-template-columns:1fr}.speed-metrics,.node-list,.privacy-tags,.protocol-list{display:grid;gap:12px;margin-top:18px}.metric,.node-item,.privacy-tag,.protocol-item{border:1px solid var(--border);background:#F9FBFF;border-radius:18px;padding:14px}.metric strong,.node-item strong,.privacy-tag strong,.protocol-item strong{display:block;color:#17233f}.privacy-protection-section .privacy-wrap,.no-log-policy-section .policy-grid,.encryption-protocol-section .protocol-wrap{display:grid;gap:18px}.privacy-card,.policy-card,.risk-card,.step-card,.info-card,.faq-item,.download-step,.notice-card{background:#fff;border:1px solid var(--border);border-radius:24px;padding:22px;box-shadow:0 10px 26px rgba(24,32,51,.05)}.privacy-card h3,.policy-card h3,.risk-card h3,.step-card h3,.info-card h3,.faq-item h3,.download-step h3,.notice-card h3{margin:0 0 8px;font-size:19px}.no-log-policy-section .policy-card{border-top:4px solid var(--blue)}.device-stack{display:grid;gap:14px}.device-card{background:#F8FAFF;border:1px solid var(--border);border-radius:22px;padding:16px}.process-steps{display:grid;gap:14px}.step-number{width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900;margin-bottom:12px}.risk-grid{display:grid;gap:14px}.risk-card{border-left:4px solid var(--blue)}.faq-list{display:grid;gap:14px}.cta-section{padding:68px 0;background:var(--gradient);color:#fff;text-align:center;border-radius:34px;margin:34px auto;width:min(1120px,calc(100% - 36px));position:relative;overflow:hidden}.cta-section:before{content:"";position:absolute;inset:auto -20% -40% -20%;height:180px;background:rgba(255,255,255,.16);transform:skewY(-7deg)}.cta-section .container{position:relative}.cta-section p{color:rgba(255,255,255,.86);max-width:680px;margin:10px auto 24px}.cta-section .download-btn{background:#fff;color:var(--blue)!important}.cta-section .download-btn:hover{background:#EEF5FF;color:var(--blue-dark)!important}
.page-hero{background:linear-gradient(180deg,#F5F8FF 0%,#fff 100%);padding:54px 0 34px;border-bottom:1px solid var(--border)}.page-hero h1{font-size:clamp(32px,6vw,52px);line-height:1.12;margin:16px 0 14px;letter-spacing:-1px}.page-layout{display:grid;gap:22px;align-items:start}.content-card{background:#fff;border:1px solid var(--border);border-radius:28px;padding:24px;box-shadow:var(--shadow)}.content-card h2{margin-top:0}.content-card p{color:#48546a}.side-panel{display:grid;gap:14px}.check-list{display:grid;gap:10px;margin:18px 0}.check-item{display:flex;gap:10px;align-items:flex-start;background:#F8FAFF;border:1px solid var(--border);border-radius:16px;padding:12px}.check-item:before{content:"";width:9px;height:9px;background:var(--blue);border-radius:50%;margin-top:9px;flex:0 0 auto}.download-page-steps{display:grid;gap:14px}.faq-page-list{display:grid;gap:16px}.about-grid,.cards-grid{display:grid;gap:16px}.site-footer{background:#101828;color:#D0D5DD;margin-top:60px}.footer-grid{display:grid;gap:28px;padding:44px 0}.site-footer h3{color:#fff;margin:0 0 12px}.site-footer a{display:block;color:#D0D5DD;margin:8px 0}.site-footer p{margin:12px 0 0;color:#AAB3C5}.footer-brand img{box-shadow:none}.footer-brand span{color:#fff}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.12);padding:18px;color:#98A2B3;font-size:13px}
@media (min-width:640px){.highlight-grid{grid-template-columns:repeat(2,1fr)}.risk-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.privacy-protection-section .privacy-wrap,.no-log-policy-section .policy-grid,.about-grid,.cards-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:900px){.site-nav{display:flex;position:static;border:0;box-shadow:none;background:transparent;padding:0}.nav-toggle{display:none}.hero-inner{grid-template-columns:1.02fr .98fr;align-items:center;padding:92px 0 130px}.highlight-grid{grid-template-columns:repeat(4,1fr)}.feature-panel{padding:34px;grid-template-columns:1fr 1fr!important}.feature-panel.reverse .feature-copy{order:2}.feature-panel.reverse .feature-image{order:1}.speed-metrics,.node-list,.protocol-list{grid-template-columns:repeat(3,1fr)}.privacy-protection-section .privacy-wrap{grid-template-columns:1.1fr .9fr}.privacy-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.no-log-policy-section .policy-grid{grid-template-columns:repeat(3,1fr)}.multi-device-section .device-stack{grid-template-columns:repeat(3,1fr)}.encryption-protocol-section .protocol-wrap{grid-template-columns:.85fr 1.15fr;align-items:center}.process-steps{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(4,1fr)}.page-layout{grid-template-columns:minmax(0,1fr) 320px}.footer-grid{grid-template-columns:1.5fr repeat(3,1fr)}}
@media (min-width:1100px){.section{padding:82px 0}.risk-grid{grid-template-columns:repeat(4,1fr)}}
@media (max-width:420px){.container,.hero-inner,.nav-shell{width:calc(100% - 24px)}.feature-panel,.content-card{padding:20px;border-radius:22px}.floating-card{font-size:12px;padding:8px 10px}.float-1{left:-4px}.float-2{right:-4px}.cta-section{width:calc(100% - 24px);border-radius:26px}.download-btn{width:100%;padding:0 18px}}