:root{
  --gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
  --blue:#2980FE;
  --blue-dark:#1768E8;
  --text:#1F2937;
  --muted:#667085;
  --light:#F5F7FB;
  --line:#E5EAF2;
  --card:#FFFFFF;
  --soft:#F8FBFF;
  --radius:24px;
  --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","Hiragino Sans GB","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%;height:auto;display:block}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#111827;white-space:nowrap}.logo{width:38px;height:38px;border-radius:12px;object-fit:cover}.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:14px;background:#fff;color:#1F2937;font-size:22px}.site-nav{display:none;position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--shadow)}.site-nav.is-open{display:grid;gap:4px}.site-nav a{padding:10px 12px;border-radius:12px;color:#344054;font-size:15px}.site-nav a:hover{background:#F2F6FF;color:var(--blue)}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 22px;border-radius:999px;background:var(--blue);color:#fff!important;font-weight:750;box-shadow:0 12px 24px rgba(41,128,254,.22);transition:.2s ease}.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px)}
.section{padding:58px 0}.section-soft{background:var(--soft)}.section-title{margin:0 0 14px;font-size:28px;line-height:1.25;letter-spacing:-.02em}.section-lead{margin:0;color:var(--muted);max-width:760px}.eyebrow,.category-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:#EEF5FF;color:var(--blue);font-weight:700;font-size:13px}.link-more{color:var(--blue);font-weight:750}.pill-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.pill{padding:7px 11px;border-radius:999px;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);color:#fff;font-size:13px}.pill.light{background:#F2F7FF;color:#2D5FE8;border-color:#DCE8FF}
.vpn-dashboard-hero{background:var(--gradient);color:#fff;padding:70px 0 56px;position:relative;overflow:hidden}.vpn-dashboard-hero:before{content:"";position:absolute;inset:-30% auto auto 42%;width:520px;height:520px;border-radius:50%;background:rgba(255,255,255,.13);filter:blur(10px)}.hero-grid{position:relative;display:grid;gap:34px;align-items:center}.hero-copy h1{margin:16px 0 18px;font-size:38px;line-height:1.12;letter-spacing:-.035em}.hero-copy p{margin:0 0 24px;color:rgba(255,255,255,.88);font-size:17px}.hero-panel{position:relative;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.26);border-radius:30px;padding:22px;box-shadow:0 26px 80px rgba(0,0,0,.18)}.hero-device{background:#fff;border-radius:26px;padding:18px;min-height:300px;display:flex;align-items:center;justify-content:center}.status-card{position:relative;margin-top:12px;background:rgba(255,255,255,.94);color:#1F2937;border-radius:18px;padding:12px 14px;display:flex;align-items:center;justify-content:space-between;gap:10px;box-shadow:0 14px 30px rgba(27,42,90,.14);font-size:14px}.status-dot{width:10px;height:10px;border-radius:50%;background:#22C55E;box-shadow:0 0 0 6px rgba(34,197,94,.14)}.floating-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}.floating-stats span{background:rgba(255,255,255,.92);color:#344054;border-radius:16px;padding:10px;text-align:center;font-size:13px;font-weight:700}.service-index{padding:42px 0;background:#fff}.service-index-grid{display:grid;gap:14px;margin-top:22px}.service-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 10px 28px rgba(31,41,55,.05)}.service-card b{display:block;margin-bottom:8px}.service-card p{margin:0 0 12px;color:var(--muted);font-size:15px}.tag-blue{display:inline-flex;padding:4px 9px;border-radius:999px;background:#EEF5FF;color:var(--blue);font-size:12px;font-weight:800;margin-bottom:10px}
.feature-grid,.split-grid{display:grid;gap:24px;align-items:center}.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.feature-card h3{margin:0 0 10px;font-size:20px}.feature-card p{margin:0;color:var(--muted)}.feature-list{display:grid;gap:10px;margin:18px 0;padding:0;list-style:none}.feature-list li{padding-left:24px;position:relative;color:#475467}.feature-list li:before{content:"";position:absolute;left:0;top:.72em;width:9px;height:9px;border-radius:50%;background:var(--blue)}.visual-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:22px;box-shadow:var(--shadow)}.blue-panel{background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 100%);border:1px solid #DCE8FF;border-radius:28px;padding:24px}.privacy-protection-section .blue-panel,.encryption-protocol-section .blue-panel{border-left:5px solid var(--blue)}.node-list,.mini-grid,.risk-grid,.faq-list,.process-steps,.category-grid{display:grid;gap:14px}.mini-card,.risk-card,.faq-item,.step-card,.info-box{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px}.mini-card h3,.risk-card h3,.faq-item h3,.step-card h3{margin:0 0 8px;font-size:18px}.mini-card p,.risk-card p,.faq-item p,.step-card p,.info-box p{margin:0;color:var(--muted)}.risk-card{border-left:4px solid var(--blue)}.step-no{display:inline-flex;width:32px;height:32px;border-radius:50%;align-items:center;justify-content:center;background:#EEF5FF;color:var(--blue);font-weight:800;margin-bottom:10px}.cta-section{padding:60px 0;background:var(--gradient);color:#fff;text-align:center}.cta-section p{color:rgba(255,255,255,.88);max-width:680px;margin:0 auto 22px}.cta-section .download-btn{background:var(--blue)}
.page-hero{padding:54px 0 28px;background:linear-gradient(180deg,#F6F9FF 0%,#fff 100%)}.page-hero h1{margin:14px 0 12px;font-size:34px;line-height:1.2;letter-spacing:-.03em}.page-hero p{margin:0;color:var(--muted);max-width:820px}.page-layout{display:grid;gap:24px;padding:34px 0 62px}.article-card{background:#fff;border:1px solid var(--line);border-radius:26px;padding:24px;box-shadow:var(--shadow)}.article-card h2{margin:0 0 12px;font-size:24px}.article-card p{color:#475467}.side-panel{background:#F8FBFF;border:1px solid #DCE8FF;border-radius:24px;padding:20px;align-self:start}.check-list{padding:0;margin:16px 0;list-style:none;display:grid;gap:10px}.check-list li{padding:12px 14px;border-radius:15px;background:#F8FAFC;border:1px solid var(--line);color:#475467}.download-wrap{margin-top:22px}.download-page-panel{text-align:center;max-width:780px;margin:0 auto}.download-steps{counter-reset:item;display:grid;gap:12px;text-align:left;margin:24px 0}.download-steps li{list-style:none;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 16px}.site-footer{background:#111827;color:#D0D5DD;padding:44px 0 0}.footer-grid{display:grid;gap:28px}.footer-brand{font-weight:800;color:#fff;font-size:20px;margin-bottom:10px}.site-footer h3{color:#fff;margin:0 0 10px;font-size:16px}.site-footer a{display:block;color:#D0D5DD;margin:7px 0}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.12);padding:18px;margin-top:32px;color:#98A2B3;font-size:14px}
@media (min-width:640px){.service-index-grid{grid-template-columns:repeat(2,1fr)}.mini-grid,.risk-grid,.category-grid{grid-template-columns:repeat(2,1fr)}.hero-copy h1{font-size:46px}.section-title{font-size:34px}}
@media (min-width:900px){.nav-toggle{display:none}.site-nav{position:static;display:flex;align-items:center;gap:2px;background:transparent;border:0;border-radius:0;padding:0;box-shadow:none}.site-nav a{font-size:14px}.hero-grid{grid-template-columns:1.05fr .95fr}.vpn-dashboard-hero{padding:88px 0 72px}.service-index-grid{grid-template-columns:repeat(4,1fr)}.service-card:first-child{grid-column:span 2}.split-grid{grid-template-columns:1fr 1fr}.feature-grid{grid-template-columns:1.05fr .95fr}.reverse{direction:rtl}.reverse>*{direction:ltr}.process-steps{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(4,1fr)}.faq-list{grid-template-columns:repeat(2,1fr)}.page-layout{grid-template-columns:minmax(0,1fr) 320px}.footer-grid{grid-template-columns:1.4fr .8fr .8fr}.section{padding:76px 0}.page-hero h1{font-size:42px}}
@media (min-width:1100px){.hero-copy h1{font-size:54px}.floating-stats{grid-template-columns:repeat(4,1fr)}}