:root{
  --blue:#2980FE;
  --blue-dark:#1768E8;
  --text:#1f2937;
  --muted:#667085;
  --light:#f5f7fb;
  --line:#e5eaf2;
  --card:#ffffff;
  --gradient:linear-gradient(90deg,#3558F2 0%,#7B4EF1 50%,#B84DDA 100%);
  --shadow:0 18px 45px rgba(32,47,86,.10);
  --radius:24px;
}
*{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:1.7;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
p{margin:0 0 16px;color:var(--muted)}
h1,h2,h3{margin:0 0 16px;line-height:1.25;color:#111827}
h1{font-size:clamp(34px,7vw,64px);letter-spacing:-1.5px}
h2{font-size:clamp(28px,4vw,42px);letter-spacing:-.8px}
h3{font-size:20px}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.container.narrow{width:min(850px,calc(100% - 32px))}
.section-pad,.feature-section,.content-section{padding:64px 0}
.soft-bg{background:#f7f9fd}
.gradient-bg{background:var(--gradient)}
.eyebrow,.category-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border-radius:999px;
  color:var(--blue);
  background:#edf5ff;
  font-size:14px;
  font-weight:700;
  margin-bottom:18px;
}
.site-header{
  position:sticky;
  top:0;
  z-index:30;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(229,234,242,.85);
}
.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;
}
.logo{width:38px;height:38px;border-radius:12px;object-fit:cover}
.brand,.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#111827}
.nav-toggle{display:none}
.nav-toggle-label{width:42px;height:42px;border:1px solid var(--line);border-radius:14px;display:grid;place-content:center;gap:5px;cursor:pointer}
.nav-toggle-label span{display:block;width:18px;height:2px;background:#344054;border-radius:4px}
.site-nav{
  display:none;
  position:absolute;
  left:16px;
  right:16px;
  top:78px;
  padding:12px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow);
}
.nav-toggle:checked ~ .site-nav{display:grid}
.site-nav a{
  padding:11px 12px;
  border-radius:12px;
  color:#475467;
  font-size:15px;
  font-weight:650;
}
.site-nav a.active,.site-nav a:hover{color:var(--blue);background:#edf5ff}
.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;
  font-weight:800;
  box-shadow:0 12px 24px rgba(41,128,254,.25);
  transition:.2s ease;
}
.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px)}
.vpn-dashboard-hero{padding:72px 0 86px;color:#fff}
.hero-inner{
  width:min(1180px,calc(100% - 32px));
  margin:0 auto;
  display:grid;
  gap:42px;
  align-items:center;
}
.hero-copy h1,.hero-copy p{color:#fff}
.hero-copy p{font-size:18px;color:rgba(255,255,255,.88);max-width:680px}
.hero-copy .eyebrow{background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.25)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-tags span{
  color:#fff;
  border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.12);
  padding:8px 12px;
  border-radius:999px;
  font-size:14px;
}
.hero-console{
  position:relative;
  min-height:420px;
  display:grid;
  place-items:center;
  padding:24px;
  border-radius:34px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  box-shadow:0 25px 70px rgba(31,41,55,.22);
}
.hero-product{
  width:min(320px,86%);
  border-radius:28px;
  filter:drop-shadow(0 22px 35px rgba(17,24,39,.24));
}
.status-card,.device-card{
  position:absolute;
  background:#fff;
  color:#344054;
  border:1px solid rgba(255,255,255,.65);
  box-shadow:0 18px 36px rgba(17,24,39,.18);
  border-radius:18px;
  padding:10px 14px;
  font-size:13px;
}
.status-card strong{display:block;color:#111827;font-size:15px}
.status-top{top:22px;left:32px}
.status-right{right:18px;top:38%}
.status-bottom{bottom:26px;right:44px}
.status-left{left:14px;bottom:34%}
.device-card{bottom:22px;left:34px;color:var(--blue);font-weight:800}
.section-heading{max-width:780px;margin:0 auto 34px;text-align:center}
.service-grid{
  display:grid;
  gap:16px;
}
.service-card{
  display:block;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:0 12px 34px rgba(32,47,86,.06);
  transition:.2s ease;
}
.service-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.service-card span{
  display:inline-flex;
  color:var(--blue);
  background:#edf5ff;
  border-radius:999px;
  padding:4px 10px;
  font-size:13px;
  font-weight:800;
  margin-bottom:12px;
}
.split-panel{
  display:grid;
  gap:28px;
  align-items:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:30px;
  padding:24px;
  box-shadow:var(--shadow);
}
.feature-text{padding:6px}
.clean-list,.check-list{
  padding:0;
  margin:18px 0;
  list-style:none;
  display:grid;
  gap:10px;
}
.clean-list li,.check-list li{
  position:relative;
  padding-left:24px;
  color:#475467;
}
.clean-list li:before,.check-list li:before{
  content:"";
  position:absolute;
  left:0;
  top:.75em;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--blue);
}
.text-link{
  color:var(--blue);
  font-weight:800;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.text-link:after{content:"→"}
.feature-media{
  min-height:260px;
  border-radius:26px;
  background:linear-gradient(145deg,#f8fbff,#eef3fb);
  display:grid;
  place-items:center;
  padding:24px;
  overflow:hidden;
}
.feature-media img{max-height:330px;object-fit:contain}
.mini-metrics,.device-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:20px 0;
}
.mini-metrics span,.device-row span{
  background:#fff;
  border:1px solid var(--line);
  color:#344054;
  border-radius:999px;
  padding:8px 12px;
  font-weight:700;
}
.privacy-panel,.tech-panel{
  position:relative;
  display:grid;
  gap:24px;
  align-items:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:30px;
  padding:26px;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.privacy-cards,.policy-grid,.info-grid{
  display:grid;
  gap:14px;
}
.privacy-cards div,.policy-grid div,.info-card{
  background:#f8fbff;
  border:1px solid var(--line);
  border-radius:20px;
  padding:18px;
}
.privacy-img{max-height:260px;margin:auto}
.center-link{text-align:center;margin-top:24px}
.tech-panel img{max-height:230px;margin:auto}
.protocol-stack{display:grid;gap:12px}
.protocol-stack span{
  background:#f8fbff;
  border:1px solid var(--line);
  border-left:4px solid var(--blue);
  border-radius:16px;
  padding:14px 16px;
  font-weight:800;
}
.process-steps{
  display:grid;
  gap:16px;
}
.process-steps a{
  background:#fff;
  border:1px solid var(--line);
  border-radius:22px;
  padding:20px;
  box-shadow:0 12px 34px rgba(32,47,86,.06);
}
.process-steps b{
  color:var(--blue);
  font-size:14px;
}
.risk-grid{
  display:grid;
  gap:16px;
}
.risk-grid div{
  background:#fff;
  border:1px solid var(--line);
  border-left:4px solid var(--blue);
  border-radius:20px;
  padding:20px;
}
.risk-grid strong{
  display:block;
  color:#344054;
  margin-bottom:10px;
}
.risk-grid a{color:var(--blue);font-weight:800}
.faq-list{
  display:grid;
  gap:14px;
}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:18px 20px;
}
.faq-item summary{cursor:pointer;font-weight:800;color:#111827}
.faq-item p{margin-top:12px}
.cta-section{
  color:#fff;
  text-align:center;
  padding:72px 0;
}
.cta-section h2,.cta-section p{color:#fff}
.cta-section p{max-width:650px;margin:0 auto 24px;color:rgba(255,255,255,.86)}
.page-hero{
  padding:70px 0;
  background:linear-gradient(180deg,#f6f9ff 0%,#fff 100%);
  text-align:center;
}
.page-hero.compact{padding:58px 0}
.page-hero p{font-size:18px}
.article-layout{
  display:grid;
  gap:24px;
  align-items:start;
}
.article-card,.side-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:26px;
  padding:24px;
  box-shadow:0 14px 40px rgba(32,47,86,.07);
}
.article-card h2{font-size:26px;margin-top:18px}
.article-card h2:first-child{margin-top:0}
.guide-note{
  background:#f4f8ff;
  border:1px solid #dce9ff;
  border-radius:20px;
  padding:18px;
  margin:22px 0;
}
.side-panel{
  position:sticky;
  top:96px;
}
.side-panel a{
  display:block;
  color:var(--blue);
  font-weight:800;
  padding:10px 0;
  border-top:1px solid var(--line);
}
.side-panel ul{margin:0;padding-left:20px;color:#475467}
.two-column{display:grid;gap:22px}
.step-list{
  counter-reset:item;
  margin:0;
  padding:0;
  list-style:none;
  display:grid;
  gap:14px;
}
.step-list li{
  display:grid;
  gap:4px;
  border:1px solid var(--line);
  border-radius:18px;
  padding:16px;
  background:#f8fbff;
}
.step-list span{color:var(--muted)}
.single-cta{text-align:center;margin-top:30px}
.site-footer{
  background:#101828;
  color:#d0d5dd;
  padding:52px 0 24px;
}
.footer-inner{
  width:min(1120px,calc(100% - 32px));
  margin:0 auto;
  display:grid;
  gap:28px;
}
.footer-brand{color:#fff;margin-bottom:14px}
.footer-brand img{width:38px;height:38px;border-radius:12px}
.footer-inner p{color:#98a2b3;max-width:560px}
.footer-links{
  display:grid;
  gap:10px;
}
.footer-links a{color:#d0d5dd}
.footer-links a:hover{color:#fff}
.footer-bottom{
  width:min(1120px,calc(100% - 32px));
  margin:30px auto 0;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.12);
  color:#98a2b3;
  font-size:14px;
}
@media (min-width:680px){
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .risk-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(2,1fr)}
  .policy-grid,.privacy-cards,.info-grid{grid-template-columns:repeat(3,1fr)}
  .two-column{grid-template-columns:1fr 1fr}
}
@media (min-width:980px){
  .nav-toggle-label{display:none}
  .site-nav{
    display:flex;
    position:static;
    align-items:center;
    gap:4px;
    padding:0;
    border:0;
    box-shadow:none;
    background:transparent;
  }
  .site-nav a{font-size:14px;padding:8px 9px}
  .hero-inner{grid-template-columns:1.02fr .98fr}
  .hero-console{min-height:520px}
  .service-grid{grid-template-columns:repeat(4,1fr)}
  .service-card:nth-child(1),.service-card:nth-child(2){grid-column:span 2}
  .split-panel{grid-template-columns:1fr 1fr;padding:38px}
  .split-panel.reverse .feature-text{order:2}
  .split-panel.reverse .feature-media{order:1}
  .privacy-panel{grid-template-columns:1fr 1.1fr .8fr;padding:38px}
  .tech-panel{grid-template-columns:1.05fr .85fr .7fr;padding:38px}
  .process-steps{grid-template-columns:repeat(3,1fr)}
  .risk-grid{grid-template-columns:repeat(4,1fr)}
  .article-layout{grid-template-columns:minmax(0,1fr) 310px}
  .article-card,.side-panel{padding:34px}
  .footer-inner{grid-template-columns:1fr 360px}
  .footer-links{grid-template-columns:1fr 1fr}
}
@media (max-width:420px){
  .container,.hero-inner,.header-inner,.footer-inner,.footer-bottom{width:calc(100% - 24px)}
  .vpn-dashboard-hero{padding:46px 0 58px}
  .section-pad,.feature-section,.content-section{padding:46px 0}
  .hero-console{min-height:340px;padding:16px}
  .status-card,.device-card{position:static;margin:6px;display:inline-block}
  .hero-console{display:block;text-align:center}
  .hero-product{margin:0 auto 12px}
  .download-btn{width:100%}
}