:root{
    --brand-gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
    --blue:#2980FE;
    --blue-dark:#1768E8;
    --text:#1e293b;
    --muted:#64748b;
    --light:#f5f7fb;
    --line:#e6ebf2;
    --white:#ffffff;
    --shadow:0 18px 45px rgba(31,41,55,.10);
    --soft-shadow:0 12px 32px rgba(41,128,254,.12);
    --radius:28px;
}
*{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}
p{margin:0 0 16px;color:#475569}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid rgba(230,235,242,.9)}
.header-inner{max-width:1180px;margin:0 auto;padding:14px 18px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:#152033;letter-spacing:.2px;white-space:nowrap}
.logo{width:38px;height:38px;border-radius:12px;object-fit:cover;box-shadow:0 8px 20px rgba(41,128,254,.15)}
.main-nav{display:none;flex-direction:column;position:absolute;top:67px;left:16px;right:16px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:12px;box-shadow:var(--shadow)}
.main-nav a{padding:11px 14px;border-radius:14px;color:#334155;font-size:15px;font-weight:650}
.main-nav a.active,.main-nav a:hover{background:#eef5ff;color:var(--blue)}
.nav-toggle{position:absolute;opacity:0;pointer-events:none}
.nav-toggle-label{display:flex;flex-direction:column;gap:5px;width:42px;height:42px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:14px;background:#fff}
.nav-toggle-label span{display:block;width:18px;height:2px;background:#1f2937;border-radius:2px}
.nav-toggle:checked ~ .main-nav{display:flex}
.container{width:min(1120px,calc(100% - 36px));margin:0 auto}
.section{padding:58px 0}
.section-light{background:#f7faff}
.section-title{max-width:760px;margin:0 auto 26px;text-align:center}
.section-title.left{text-align:left;margin-left:0}
.eyebrow,.category-badge{display:inline-flex;align-items:center;gap:8px;border-radius:999px;background:#edf5ff;color:var(--blue);font-size:13px;font-weight:800;padding:7px 12px;margin-bottom:14px}
h1,h2,h3{margin:0;color:#162033;line-height:1.18;letter-spacing:-.02em}
h1{font-size:clamp(34px,7vw,62px)}
h2{font-size:clamp(26px,4.5vw,42px)}
h3{font-size:20px}
.lead{font-size:18px;color:#e9efff;margin-top:18px;max-width:620px}
.text-lead{font-size:18px;color:#475569;max-width:780px}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 26px;border-radius:999px;background:var(--blue);color:#fff!important;font-weight:800;box-shadow:0 14px 28px rgba(41,128,254,.28);transition:.2s ease;white-space:nowrap;border:0}
.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px);box-shadow:0 18px 34px rgba(23,104,232,.3)}
.link-more{color:var(--blue);font-weight:800;display:inline-flex;align-items:center;gap:6px}
.link-more:hover{color:var(--blue-dark)}
.vpn-saas-hero{position:relative;overflow:hidden;background:var(--brand-gradient);padding:74px 0 70px;color:#fff}
.vpn-saas-hero:after{content:"";position:absolute;left:-8%;right:-8%;bottom:-86px;height:150px;background:#fff;transform:skewY(-4deg);transform-origin:left top}
.hero-inner{position:relative;z-index:2;width:min(1180px,calc(100% - 36px));margin:0 auto;display:grid;gap:34px;align-items:center}
.hero-content .download-btn{margin-top:12px;background:#2980FE;color:#fff}
.hero-tags,.floating-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-tags span,.floating-tags span{display:inline-flex;align-items:center;border-radius:999px;background:rgba(255,255,255,.17);border:1px solid rgba(255,255,255,.28);padding:8px 12px;color:#fff;font-size:13px;font-weight:700}
.hero-visual{position:relative;min-height:360px;display:flex;align-items:center;justify-content:center}
.hero-card{position:relative;width:min(420px,100%);border-radius:36px;background:rgba(255,255,255,.13);padding:18px;box-shadow:0 28px 80px rgba(17,24,39,.22);border:1px solid rgba(255,255,255,.22)}
.hero-card img{border-radius:28px;box-shadow:0 18px 45px rgba(17,24,39,.18);background:#fff}
.float-card{position:absolute;background:rgba(255,255,255,.92);color:#1f2937;border-radius:18px;padding:10px 14px;font-weight:800;font-size:13px;box-shadow:0 12px 28px rgba(15,23,42,.15)}
.float-card.one{top:28px;left:0}.float-card.two{right:0;top:86px}.float-card.three{left:14px;bottom:62px}.float-card.four{right:16px;bottom:18px}
.product-highlights{position:relative;z-index:3;margin-top:-18px}
.card-grid{display:grid;gap:18px}
.highlight-card,.feature-card,.risk-card,.faq-item,.step-card,.note-card,.policy-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 10px 28px rgba(15,23,42,.05)}
.highlight-card{min-height:210px}.highlight-card .tag{display:inline-flex;background:#edf5ff;color:var(--blue);border-radius:999px;padding:5px 10px;font-size:12px;font-weight:800;margin-bottom:12px}.highlight-card h3{margin-bottom:10px}
.split-section{display:grid;gap:28px;align-items:center}
.visual-panel{background:#fff;border:1px solid var(--line);border-radius:36px;padding:18px;box-shadow:var(--soft-shadow)}
.visual-panel img{border-radius:28px;background:#f8fafc}
.feature-list{display:grid;gap:12px;margin:20px 0}.feature-list span{display:flex;gap:10px;align-items:flex-start;color:#475569}.feature-list span:before{content:"";width:9px;height:9px;border-radius:50%;background:var(--blue);margin-top:10px;flex:0 0 auto}
.high-speed-section{background:linear-gradient(180deg,#f7faff 0%,#ffffff 100%)}
.speed-card{background:#fff;border:1px solid var(--line);border-radius:34px;padding:24px;box-shadow:var(--shadow)}
.speed-meter{height:10px;border-radius:999px;background:#e8eef8;overflow:hidden;margin:18px 0}.speed-meter span{display:block;width:74%;height:100%;background:var(--brand-gradient);border-radius:999px}
.global-nodes-section .node-list{display:grid;gap:12px}.node-list div{border:1px solid var(--line);border-radius:18px;padding:14px;background:#fff}.node-list strong{display:block;color:#172033;margin-bottom:4px}
.privacy-protection-section{background:#f7faff}.privacy-panel{background:#fff;border:1px solid var(--line);border-radius:36px;padding:28px;box-shadow:var(--shadow)}
.privacy-grid{display:grid;gap:16px;margin-top:22px}.privacy-grid .feature-card{box-shadow:none}
.no-log-policy-section .policy-row{display:grid;gap:16px}.policy-card{border-left:4px solid var(--blue)}
.multi-device-section{background:linear-gradient(180deg,#ffffff 0%,#f6f9ff 100%)}
.device-stack{display:grid;grid-template-columns:1fr;gap:16px}.device-stack .note-card{padding:18px}.device-stack strong{display:block;color:#172033}
.encryption-protocol-section .tech-panel{background:#162033;color:#fff;border-radius:34px;padding:26px;box-shadow:0 20px 48px rgba(15,23,42,.18)}
.tech-panel h2,.tech-panel h3{color:#fff}.tech-panel p{color:#dbe6f4}.protocol-grid{display:grid;gap:14px;margin-top:20px}.protocol-grid div{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:20px;padding:16px}
.process-steps{display:grid;gap:16px;counter-reset:step}.step-card{position:relative;padding-left:72px}.step-card:before{counter-increment:step;content:counter(step);position:absolute;left:22px;top:24px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;font-weight:900}
.risk-grid{display:grid;gap:16px}.risk-card{border-top:4px solid var(--blue)}.risk-card strong{display:block;color:#172033;margin-bottom:8px}.risk-card em{display:block;margin-top:10px;color:#475569;font-style:normal;font-weight:700}
.faq-list{display:grid;gap:14px}.faq-item h3{font-size:18px;margin-bottom:8px}.faq-item p{margin-bottom:0}
.cta-section{padding:64px 0;background:var(--brand-gradient);color:#fff;text-align:center;position:relative;overflow:hidden}.cta-section:before{content:"";position:absolute;inset:18px;border:1px solid rgba(255,255,255,.18);border-radius:36px;pointer-events:none}.cta-inner{position:relative;z-index:1;width:min(850px,calc(100% - 36px));margin:0 auto}.cta-section h2{color:#fff}.cta-section p{color:#eef4ff;margin:16px auto 24px;max-width:680px}
.page-hero{padding:62px 0 38px;background:linear-gradient(180deg,#f7faff 0%,#ffffff 100%)}.page-hero .container{display:grid;gap:16px}.page-hero h1{font-size:clamp(32px,6vw,52px)}
.page-layout{display:grid;gap:26px;align-items:start}.content-panel{background:#fff;border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:0 12px 34px rgba(15,23,42,.05)}.content-panel h2{font-size:26px;margin:10px 0 12px}.content-panel h3{margin:18px 0 8px}.sidebar{display:grid;gap:16px}.sidebar .note-card{box-shadow:none}.check-list,.number-list{padding-left:20px;color:#475569}.check-list li,.number-list li{margin:8px 0}.notice-box{background:#f0f7ff;border:1px solid #d8e9ff;border-radius:22px;padding:18px;color:#334155;margin:20px 0}.download-area{margin-top:24px}.download-page-grid{display:grid;gap:20px}.download-card{background:#fff;border:1px solid var(--line);border-radius:32px;padding:26px;box-shadow:var(--shadow)}.single-download{text-align:center}.single-download .download-btn{margin-top:12px}
.about-grid{display:grid;gap:18px}.about-grid .feature-card{box-shadow:none}.values-panel{background:#fff;border:1px solid var(--line);border-radius:34px;padding:28px;box-shadow:var(--soft-shadow)}
.site-footer{background:#111827;color:#cbd5e1}.footer-inner{width:min(1120px,calc(100% - 36px));margin:0 auto;padding:44px 0;display:grid;gap:28px}.footer-brand p{max-width:420px;color:#cbd5e1;margin-top:14px}.footer-logo{color:#fff}.footer-links{display:grid;gap:22px}.footer-links h3{color:#fff;font-size:16px;margin-bottom:10px}.footer-links a{display:block;color:#cbd5e1;padding:5px 0;font-size:14px}.footer-links a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);text-align:center;padding:16px 18px}.footer-bottom p{margin:0;color:#94a3b8;font-size:13px}
@media (min-width:700px){
    .card-grid{grid-template-columns:repeat(2,1fr)}
    .privacy-grid,.policy-row,.protocol-grid,.risk-grid,.about-grid,.footer-links{grid-template-columns:repeat(2,1fr)}
    .download-page-grid{grid-template-columns:1.1fr .9fr}
}
@media (min-width:980px){
    .nav-toggle-label{display:none}.main-nav{position:static;display:flex;flex-direction:row;align-items:center;background:transparent;border:0;box-shadow:none;padding:0}.main-nav a{padding:9px 11px;font-size:14px}
    .hero-inner{grid-template-columns:1.02fr .98fr}.vpn-saas-hero{padding:94px 0 108px}.lead{font-size:19px}
    .product-highlights{margin-top:-58px}.product-highlights .card-grid{grid-template-columns:repeat(4,1fr)}
    .split-section{grid-template-columns:1fr 1fr;gap:42px}.split-section.reverse .visual-panel{order:-1}
    .privacy-grid{grid-template-columns:repeat(3,1fr)}.policy-row{grid-template-columns:repeat(3,1fr)}.protocol-grid{grid-template-columns:repeat(3,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(4,1fr)}.page-layout{grid-template-columns:minmax(0,1fr) 310px}.footer-inner{grid-template-columns:1fr 1.5fr}.footer-links{grid-template-columns:repeat(3,1fr)}
    .section{padding:78px 0}.content-panel{padding:32px}.device-stack{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:480px){
    .header-inner{padding:12px 14px}.container{width:min(100% - 28px,1120px)}.section{padding:44px 0}.hero-inner{width:min(100% - 28px,1180px)}.vpn-saas-hero{padding:54px 0 64px}.hero-visual{min-height:300px}.float-card{font-size:12px;padding:8px 10px}.download-btn{width:100%;padding:13px 20px}.content-panel,.download-card,.privacy-panel,.tech-panel{border-radius:24px;padding:20px}.step-card{padding-left:64px}.risk-grid{grid-template-columns:1fr}.cta-section:before{display:none}
}