:root{
    --gradient:linear-gradient(90deg,#3558F2 0%,#7B4EF1 50%,#B84DDA 100%);
    --blue:#2980FE;
    --blue-dark:#1768E8;
    --text:#1f2937;
    --muted:#667085;
    --light:#f5f7fb;
    --line:#e5e7eb;
    --panel:#ffffff;
    --soft:#eef4ff;
    --radius:28px;
    --shadow:0 18px 45px rgba(31,41,55,.08);
}
*{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}.narrow{width:min(860px,calc(100% - 32px));margin:0 auto}.section{padding:68px 0}.section-soft{background:linear-gradient(180deg,#f7faff 0%,#fff 100%)}.section-title{font-size:clamp(28px,4vw,44px);line-height:1.18;margin:0 0 14px}.section-lead{color:var(--muted);font-size:17px;max-width:760px;margin:0 0 28px}.eyebrow,.badge{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:999px;background:#eef4ff;color:#2563eb;font-weight:700;font-size:13px}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(16px);border-bottom:1px solid rgba(229,231,235,.8)}.nav-container{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;font-size:20px}.logo,.footer-brand img{width:40px;height:40px;border-radius:12px;object-fit:cover}.site-nav{position:absolute;top:68px;left:14px;right:14px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:14px;display:none;grid-template-columns:1fr;gap:8px}.site-nav a{padding:11px 12px;border-radius:14px;color:#374151;font-weight:600}.site-nav a:hover{background:#f3f6ff;color:#1d4ed8}.nav-toggle{display:none}.nav-toggle-label{width:42px;height:42px;border-radius:14px;border:1px solid var(--line);display:grid;place-content:center;gap:5px;background:#fff}.nav-toggle-label span{width:20px;height:2px;background:#1f2937;display:block;border-radius:9px}.nav-toggle:checked~.site-nav{display:grid}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 24px;border-radius:999px;background:var(--blue);color:#fff!important;font-weight:800;box-shadow:0 12px 26px rgba(41,128,254,.28);transition:.2s ease}.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px)}.link-more{color:#2563eb;font-weight:700}.vpn-saas-hero{padding:36px 0 70px;background:#f8fbff}.hero-card{position:relative;overflow:hidden;border-radius:36px;background:var(--gradient);padding:34px 22px;color:#fff;box-shadow:0 28px 70px rgba(53,88,242,.22)}.hero-card:after{content:"";position:absolute;right:-12%;bottom:-28%;width:68%;height:70%;background:rgba(255,255,255,.14);clip-path:polygon(22% 0,100% 8%,85% 100%,0 88%);transform:rotate(-6deg)}.hero-grid{position:relative;z-index:1;display:grid;gap:28px;align-items:center}.hero-copy h1{font-size:clamp(34px,7vw,64px);line-height:1.08;margin:14px 0 18px;letter-spacing:-.04em}.hero-copy p{font-size:18px;color:rgba(255,255,255,.9);margin:0 0 24px;max-width:620px}.hero-tags,.floating-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.hero-tags span,.floating-tags span{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.24);font-size:13px;font-weight:700}.hero-visual{position:relative;min-height:320px;display:grid;place-items:center}.product-shell{position:relative;width:min(430px,92%);padding:18px;border-radius:34px;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.24);backdrop-filter:blur(12px)}.product-shell img{border-radius:28px;box-shadow:0 22px 45px rgba(15,23,42,.22)}.status-card{position:absolute;background:#fff;color:#1f2937;border-radius:18px;padding:10px 14px;box-shadow:0 16px 36px rgba(15,23,42,.16);font-weight:800;font-size:13px}.status-card.one{top:10px;left:0}.status-card.two{right:0;top:34%}.status-card.three{left:8%;bottom:18px}.status-card.four{right:8%;bottom:-8px}.product-highlights{display:grid;grid-template-columns:1fr;gap:16px;margin-top:-32px;position:relative;z-index:2}.highlight-card,.info-card,.risk-card,.faq-item,.step-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 14px 34px rgba(31,41,55,.06)}.highlight-card .tag{display:inline-block;background:#eef4ff;color:#2563eb;padding:5px 10px;border-radius:999px;font-size:12px;font-weight:800}.highlight-card h3,.info-card h3,.risk-card h3,.step-card h3{margin:12px 0 8px;font-size:20px}.highlight-card p,.info-card p,.risk-card p,.step-card p{color:var(--muted);margin:0 0 12px}.feature-panel{background:#fff;border:1px solid var(--line);border-radius:34px;padding:24px;box-shadow:var(--shadow);display:grid;gap:26px;align-items:center}.feature-panel.reverse .feature-image{order:-1}.feature-text ul{padding-left:18px;color:#4b5563}.feature-text li{margin:8px 0}.feature-image{border-radius:30px;background:linear-gradient(135deg,#eef4ff,#fff);padding:18px}.feature-image img{border-radius:24px}.high-speed-section{background:#f7faff}.speed-grid,.nodes-grid,.device-grid,.protocol-grid,.privacy-grid{display:grid;gap:20px}.speed-meter{background:#fff;border:1px solid var(--line);border-radius:30px;padding:22px;box-shadow:var(--shadow)}.meter-row{display:flex;justify-content:space-between;color:#475467;font-weight:700;margin:14px 0 8px}.bar{height:12px;border-radius:999px;background:#e9eefb;overflow:hidden}.bar span{display:block;height:100%;border-radius:999px;background:var(--blue)}.global-nodes-section .node-card{background:#fff;border-radius:26px;padding:18px;border:1px solid var(--line)}.node-card strong{display:block;margin-bottom:5px}.privacy-protection-section{background:#fff}.privacy-board{background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line);border-radius:34px;padding:24px;box-shadow:var(--shadow)}.mini-grid{display:grid;grid-template-columns:1fr;gap:14px}.mini-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px}.mini-card h3{margin:0 0 8px}.mini-card p{margin:0;color:var(--muted)}.no-log-policy-section{background:#f8fbff}.policy-strip{display:grid;grid-template-columns:1fr;gap:16px}.device-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:20px}.protocol-panel{background:#101828;color:#fff;border-radius:32px;padding:24px;overflow:hidden;position:relative}.protocol-panel:before{content:"";position:absolute;inset:auto -40px -60px auto;width:220px;height:220px;background:rgba(41,128,254,.34);border-radius:50%;filter:blur(12px)}.protocol-panel p{color:#d0d5dd}.process-steps{display:grid;grid-template-columns:1fr;gap:15px;counter-reset:step}.step-card{position:relative;padding-left:68px}.step-num{position:absolute;left:20px;top:22px;width:36px;height:36px;border-radius:14px;background:#eef4ff;color:#2563eb;display:grid;place-items:center;font-weight:900}.risk-grid{display:grid;grid-template-columns:1fr;gap:16px}.risk-card{border-left:4px solid var(--blue)}.risk-card .suggest{display:block;color:#2563eb;font-weight:800;margin-top:8px}.faq-list{display:grid;gap:14px}.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:var(--muted)}.cta-section{padding:66px 0;background:#fff}.cta-card{border-radius:34px;background:var(--gradient);color:#fff;padding:34px 22px;text-align:center;position:relative;overflow:hidden}.cta-card:before{content:"";position:absolute;left:-60px;top:-70px;width:220px;height:220px;background:rgba(255,255,255,.16);border-radius:50%}.cta-card h2{font-size:clamp(28px,5vw,46px);line-height:1.15;margin:0 0 14px}.cta-card p{max-width:680px;margin:0 auto 24px;color:rgba(255,255,255,.88)}.page-hero{background:linear-gradient(180deg,#f7faff 0%,#fff 100%);padding:58px 0 34px}.page-hero h1{font-size:clamp(32px,6vw,54px);line-height:1.12;margin:16px 0 14px}.page-hero p{color:var(--muted);font-size:17px;max-width:760px;margin:0}.content-layout{display:grid;grid-template-columns:1fr;gap:24px;align-items:start}.article-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:var(--shadow)}.article-card h2{font-size:26px;margin:0 0 12px}.article-card p{color:#4b5563}.check-list,.number-list{padding-left:20px;color:#4b5563}.check-list li,.number-list li{margin:9px 0}.side-panel{background:#f7faff;border:1px solid #dce8ff;border-radius:26px;padding:22px;position:sticky;top:92px}.side-panel h3{margin-top:0}.side-panel a{display:block;color:#2563eb;font-weight:700;margin:10px 0}.download-steps{display:grid;gap:14px}.download-step{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px}.download-step span{width:34px;height:34px;flex:0 0 34px;border-radius:12px;background:#eef4ff;color:#2563eb;font-weight:900;display:grid;place-items:center}.site-footer{background:#0f172a;color:#d0d5dd;padding-top:52px}.footer-grid{display:grid;grid-template-columns:1fr;gap:24px}.footer-grid h3{color:#fff;margin:0 0 12px}.footer-grid a{display:block;color:#d0d5dd;margin:8px 0}.footer-grid p{color:#98a2b3}.footer-brand{color:#fff}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.1);padding:18px;margin-top:28px;color:#98a2b3;font-size:14px}.split-note{background:#eef4ff;border:1px solid #d7e5ff;color:#344054;border-radius:24px;padding:18px}.image-row{display:grid;gap:16px}.image-row img{border-radius:26px;background:#f7faff;padding:8px;border:1px solid var(--line)}
@media (min-width:700px){.product-highlights{grid-template-columns:repeat(2,1fr)}.mini-grid,.risk-grid,.policy-strip{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}.image-row{grid-template-columns:repeat(2,1fr)}}
@media (min-width:980px){.nav-toggle-label{display:none}.site-nav{position:static;display:flex!important;align-items:center;justify-content:flex-end;gap:2px;padding:0;border:0;box-shadow:none;background:transparent}.site-nav a{font-size:14px;padding:9px 10px}.hero-card{padding:58px}.hero-grid{grid-template-columns:1.04fr .96fr}.hero-copy p{font-size:19px}.product-highlights{grid-template-columns:repeat(4,1fr)}.feature-panel{grid-template-columns:1fr 1fr;padding:34px}.feature-panel.reverse .feature-image{order:2}.speed-grid,.nodes-grid,.device-grid,.protocol-grid,.privacy-grid{grid-template-columns:1fr 1fr;align-items:center}.mini-grid{grid-template-columns:repeat(3,1fr)}.policy-strip{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(3,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.content-layout{grid-template-columns:minmax(0,1fr) 300px}.section{padding:86px 0}.cta-card{padding:52px}.article-card{padding:34px}.footer-grid{gap:42px}.nav-container{min-height:74px}.site-header{min-height:74px}.site-nav a{font-size:14px}}
@media (min-width:1180px){.site-nav a{font-size:15px;padding:10px 12px}.hero-visual{min-height:420px}.product-shell{width:430px}}
@media (max-width:420px){.container,.narrow{width:min(100% - 24px,1120px)}.hero-card{border-radius:28px;padding:28px 18px}.section{padding:54px 0}.status-card{font-size:12px;padding:8px 10px}.status-card.two{top:42%}.download-btn{width:100%;padding:13px 18px}.hero-copy .download-btn,.cta-card .download-btn{width:auto;min-width:168px}.article-card{padding:20px;border-radius:24px}.step-card{padding-left:62px}.page-hero{padding-top:44px}}