:root{
    --blue:#2980FE;
    --blue-dark:#1768E8;
    --text:#1f2937;
    --muted:#667085;
    --light:#f6f8fc;
    --line:#e5e9f2;
    --card:#ffffff;
    --gradient:linear-gradient(90deg,#3558F2 0%,#7B4EF1 50%,#B84DDA 100%);
    --shadow:0 18px 50px rgba(31,41,55,.08);
    --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.7;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}
.gradient-bg{background:var(--gradient)}
.soft-bg{background:#f5f7fb}
.section-pad{padding:58px 0}
.section-heading{text-align:center;max-width:760px;margin:0 auto 30px}
.section-heading.left{text-align:left;margin:0}
.section-kicker,.eyebrow,.category-badge{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:700;font-size:14px;letter-spacing:.02em;background:#eef5ff;border:1px solid #dbeafe;border-radius:999px;padding:6px 12px}
.section-heading h2,.feature-copy h2,.privacy-title h2,.protocol-panel h2,.cta-inner h2{font-size:clamp(28px,4vw,42px);line-height:1.18;margin:14px 0;color:#111827}
p{color:var(--muted);margin:0 0 16px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{width:min(1180px,calc(100% - 28px));margin:0 auto;min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:#111827}
.logo img{width:38px;height:38px;border-radius:12px;object-fit:cover}
.nav-switch{position:absolute;opacity:0;pointer-events:none}
.nav-toggle{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:8px 14px;color:#344054;background:#fff;font-size:14px}
.site-nav{display:none;position:absolute;left:14px;right:14px;top:72px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--shadow)}
.nav-switch:checked ~ .site-nav{display:grid;gap:6px}
.site-nav a{padding:10px 12px;border-radius:12px;color:#475467;font-weight:600;font-size:14px}
.site-nav a.active,.site-nav a:hover{background:#eef5ff;color:var(--blue)}
.nav-download{border:1px solid #dbeafe}
.download-btn{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff!important;border-radius:999px;padding:13px 24px;min-height:48px;font-weight:800;box-shadow:0 12px 24px rgba(41,128,254,.22);transition:.2s ease;white-space:nowrap}
.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px)}
.text-link{display:inline-flex;align-items:center;color:var(--blue);font-weight:800;margin-top:8px}
.text-link:hover{color:var(--blue-dark)}
.center-link{display:flex;justify-content:center;margin-top:22px}
.vpn-dashboard-hero{padding:64px 0 72px;color:#fff;position:relative;overflow:hidden}
.vpn-dashboard-hero:after{content:"";position:absolute;inset:auto -20% -40% 45%;height:360px;background:rgba(255,255,255,.16);filter:blur(30px);border-radius:50%}
.hero-grid{display:grid;gap:34px;position:relative;z-index:1}
.hero-copy h1{font-size:clamp(38px,8vw,68px);line-height:1.05;margin:16px 0 18px;letter-spacing:-.04em;color:#fff}
.hero-copy p{color:rgba(255,255,255,.86);font-size:17px;max-width:620px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.hero-tags span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);color:#fff;border-radius:999px;padding:8px 12px;font-weight:700;font-size:13px}
.hero-console{position:relative;min-height:410px;display:grid;place-items:center}
.console-card{background:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.46);border-radius:30px;padding:18px;box-shadow:0 28px 80px rgba(31,41,55,.2)}
.main-device img{max-height:330px;margin:auto;object-fit:contain}
.status-card{position:absolute;background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.8);box-shadow:0 16px 36px rgba(31,41,55,.16);border-radius:18px;padding:12px 14px;color:#111827;min-width:132px}
.status-card strong{display:block;font-size:14px;color:#111827}
.status-card span{display:block;font-size:12px;color:#667085;margin-top:2px}
.status-a{top:20px;left:6px}.status-b{top:84px;right:0}.status-c{bottom:76px;left:2px}.status-d{bottom:18px;right:18px}.status-e{top:50%;left:50%;transform:translate(-50%,-50%)}
.service-grid{display:grid;gap:16px}
.service-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 12px 28px rgba(31,41,55,.05);transition:.2s ease}
.service-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.service-card span{display:inline-flex;background:#eef5ff;color:var(--blue);border-radius:999px;padding:5px 10px;font-size:13px;font-weight:800}
.service-card h3{font-size:20px;margin:14px 0 8px;color:#111827}
.service-card p{margin-bottom:0}
.feature-section .split-layout{display:grid;gap:26px;align-items:center}
.feature-media{background:#fff;border:1px solid var(--line);border-radius:30px;padding:22px;box-shadow:var(--shadow)}
.feature-media img{max-height:380px;margin:auto;object-fit:contain}
.feature-copy{background:#fff;border:1px solid var(--line);border-radius:30px;padding:26px;box-shadow:0 10px 26px rgba(31,41,55,.05)}
.check-list{padding:0;margin:18px 0;list-style:none;display:grid;gap:10px}
.check-list li{position:relative;padding-left:24px;color:#475467}
.check-list li:before{content:"";position:absolute;left:0;top:.72em;width:9px;height:9px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px #eaf3ff}
.mini-panels{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.mini-panels span{border:1px solid var(--line);background:#f8fafc;border-radius:14px;padding:8px 12px;font-weight:700;color:#344054;font-size:14px}
.privacy-panel{display:grid;gap:22px}
.privacy-card{display:grid;gap:20px;background:#fff;border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:var(--shadow)}
.privacy-card img{max-height:260px;margin:auto;object-fit:contain}
.policy-grid{display:grid;gap:16px}
.policy-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 10px 26px rgba(31,41,55,.05)}
.policy-card h3{margin:0 0 8px;color:#111827}
.protocol-panel{display:grid;gap:22px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:30px;padding:28px;box-shadow:var(--shadow)}
.protocol-panel img{max-height:300px;margin:auto;object-fit:contain}
.process-steps{display:grid;gap:14px}
.process-steps a{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:0 10px 24px rgba(31,41,55,.05)}
.process-steps strong{color:var(--blue);font-size:14px}.process-steps h3{margin:8px 0;color:#111827}.process-steps p{margin:0}
.risk-grid{display:grid;gap:14px}
.risk-grid a{background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:18px;padding:20px;box-shadow:0 10px 24px rgba(31,41,55,.04)}
.risk-grid h3{margin:0 0 8px;color:#111827}.risk-grid strong{display:block;color:#344054;font-size:14px;margin-top:8px}
.faq-list{display:grid;gap:14px}
.faq-list.compact{grid-template-columns:1fr}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 10px 24px rgba(31,41,55,.04)}
.faq-item h2,.faq-item h3{margin:0 0 8px;color:#111827}.faq-item p{margin:0}
.faq-download{display:flex;justify-content:center;margin-top:12px}
.cta-section{padding:62px 0;color:#fff}.cta-inner{text-align:center;max-width:780px}.cta-inner h2{color:#fff}.cta-inner p{color:rgba(255,255,255,.86)}
.page-hero{background:linear-gradient(180deg,#f4f8ff 0%,#fff 100%);padding:56px 0 34px;border-bottom:1px solid var(--line)}
.small-hero h1{font-size:clamp(34px,6vw,54px);line-height:1.1;margin:16px 0 14px;color:#111827;letter-spacing:-.03em;max-width:900px}
.small-hero p{max-width:780px;font-size:17px}
.page-layout{display:grid;gap:22px;align-items:start}
.article-panel{background:#fff;border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:var(--shadow)}
.article-panel h2{font-size:24px;margin:24px 0 10px;color:#111827}.article-panel h2:first-child{margin-top:0}.article-panel p{font-size:16px}
.side-panel{background:#f8fafc;border:1px solid var(--line);border-radius:24px;padding:22px;position:sticky;top:96px}
.side-panel h3{margin:0 0 10px;color:#111827}
.notice-panel{background:#f8fbff;border:1px solid #dbeafe;border-radius:22px;padding:18px;margin:22px 0}
.number-list{margin:0;padding-left:20px;color:#475467}.number-list li{margin:10px 0}
.site-footer{background:#101828;color:#e5e7eb;padding:48px 0 0;margin-top:0}
.footer-grid{display:grid;gap:28px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:#fff;margin-bottom:12px}.footer-brand img{width:36px;height:36px;border-radius:10px}
.site-footer p{color:#cbd5e1}.site-footer h3{color:#fff;margin:0 0 12px}.site-footer a{display:block;color:#cbd5e1;margin:8px 0}.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding:18px;text-align:center;color:#94a3b8;font-size:14px}
@media (min-width:640px){.service-grid{grid-template-columns:repeat(2,1fr)}.risk-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:900px){
    .nav-toggle{display:none}.site-nav{display:flex;position:static;align-items:center;gap:2px;background:transparent;border:0;box-shadow:none;padding:0}.site-nav a{padding:9px 10px}
    .hero-grid{grid-template-columns:1.02fr .98fr;align-items:center}.vpn-dashboard-hero{padding:88px 0 96px}.hero-console{min-height:520px}.main-device img{max-height:420px}
    .service-grid{grid-template-columns:repeat(4,1fr)}.service-card:first-child{grid-column:span 2}.service-card:nth-child(2){grid-column:span 2}
    .feature-section .split-layout{grid-template-columns:1fr 1fr}.split-layout.reverse .feature-media{order:2}.split-layout.reverse .feature-copy{order:1}
    .privacy-panel{grid-template-columns:.8fr 1.2fr;align-items:center}.privacy-card{grid-template-columns:.85fr 1.15fr}
    .policy-grid{grid-template-columns:1.3fr repeat(3,1fr);align-items:stretch}.protocol-panel{grid-template-columns:1.25fr .75fr;padding:38px}
    .process-steps{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(4,1fr)}.faq-list.compact{grid-template-columns:repeat(2,1fr)}.page-layout{grid-template-columns:minmax(0,1fr) 320px}.article-panel{padding:34px}
    .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}
}
@media (max-width:420px){.container{width:min(100% - 24px,1120px)}.status-card{position:static;transform:none;min-width:0;width:100%;margin-top:8px}.hero-console{display:block;min-height:auto}.console-card{margin-bottom:12px}.section-pad{padding:44px 0}.download-btn{width:100%}.article-panel,.feature-copy,.feature-media{border-radius:22px;padding:20px}}