/* 快连VPN 静态站点样式 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:#1a1a2e;background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid #eef0f4}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:#1e50ff}
.logo-mark{width:36px;height:36px;border-radius:10px;background:#1e50ff;color:#fff;display:grid;place-items:center;font-weight:800}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{font-size:15px;color:#4a5060;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:#1e50ff}
.nav-actions{display:flex;gap:12px;align-items:center}
.lang-switch{font-size:14px;color:#4a5060;padding:6px 12px;border:1px solid #e2e6ee;border-radius:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;font-weight:600;padding:12px 24px;border-radius:10px;font-size:15px;transition:transform .15s,box-shadow .2s;cursor:pointer;border:none}
.btn-primary{background:#1e50ff;color:#fff;box-shadow:0 6px 20px rgba(30,80,255,.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(30,80,255,.35)}
.btn-outline{background:#fff;color:#1e50ff;border:1.5px solid #d5deff}
.btn-outline:hover{background:#f4f7ff}

/* Hero */
.hero{background:linear-gradient(180deg,#eaf0ff 0%,#f6f9ff 60%,#fff 100%);padding:80px 0 100px}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-badge{display:inline-block;background:#dfe8ff;color:#1e50ff;padding:8px 16px;border-radius:999px;font-size:13px;font-weight:500;margin-bottom:24px}
.hero h1{font-size:56px;line-height:1.15;font-weight:800;margin-bottom:24px;letter-spacing:-.02em}
.hero p.lead{font-size:18px;color:#556077;margin-bottom:36px;max-width:520px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:40px}
.stat .num{font-size:28px;font-weight:800;color:#1e50ff}
.stat .lbl{font-size:13px;color:#6a7386;margin-top:4px}
.hero-actions{display:flex;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.hero-note{font-size:13px;color:#8891a5}

.hero-card{background:linear-gradient(135deg,#1e50ff,#4c78ff);border-radius:28px;padding:64px 32px;color:#fff;text-align:center;box-shadow:0 30px 60px -20px rgba(30,80,255,.5)}
.hero-card .lock{width:96px;height:96px;margin:0 auto 24px;background:#fff2;border-radius:24px;display:grid;place-items:center}
.hero-card h3{font-size:24px;margin-bottom:8px}
.hero-card .sub{opacity:.85;margin-bottom:32px}
.hero-card .status{display:inline-flex;align-items:center;gap:8px;background:#fff2;padding:10px 18px;border-radius:999px;font-size:14px}
.hero-card .dot{width:8px;height:8px;background:#4ade80;border-radius:50%}

/* Sections */
.section{padding:96px 0}
.section-head{text-align:center;margin-bottom:64px}
.section-head h2{font-size:42px;font-weight:800;margin-bottom:16px;letter-spacing:-.01em}
.section-head p{font-size:17px;color:#6a7386;max-width:640px;margin:0 auto}
.section-alt{background:#f7f9fc}

/* Feature grid */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border:1px solid #eef0f4;border-radius:20px;padding:36px 28px;transition:transform .2s,box-shadow .2s}
.feature-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -20px rgba(30,80,255,.2)}
.feature-icon{width:56px;height:56px;border-radius:14px;background:#eaf0ff;color:#1e50ff;display:grid;place-items:center;margin-bottom:20px}
.feature-card h3{font-size:20px;margin-bottom:12px;font-weight:700}
.feature-card p{color:#6a7386;font-size:15px}

/* Download grid */
.download-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.dl-card{background:#fff;border:1px solid #eef0f4;border-radius:20px;padding:36px 24px;text-align:center;transition:transform .2s,box-shadow .2s}
.dl-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -20px rgba(30,80,255,.2)}
.dl-icon{width:64px;height:64px;margin:0 auto 20px;background:linear-gradient(135deg,#eaf0ff,#dfe8ff);border-radius:16px;display:grid;place-items:center;color:#1e50ff}
.dl-card h3{font-size:18px;margin-bottom:8px}
.dl-card .compat{color:#8891a5;font-size:13px;margin-bottom:20px}
.dl-note{text-align:center;color:#6a7386;font-size:14px;margin-top:32px}

/* Reviews */
.review-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:64px}
.review-stats .stat{text-align:center;background:#fff;padding:32px 20px;border-radius:16px;border:1px solid #eef0f4}
.review-stats .num{font-size:36px}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:#fff;border:1px solid #eef0f4;border-radius:20px;padding:32px}
.stars{color:#fbbf24;font-size:16px;margin-bottom:16px;letter-spacing:2px}
.review-text{color:#4a5060;margin-bottom:24px;line-height:1.7}
.review-user{display:flex;align-items:center;gap:12px}
.avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#1e50ff,#4c78ff);color:#fff;display:grid;place-items:center;font-weight:700}
.user-name{font-weight:600}
.user-meta{font-size:13px;color:#8891a5}

/* Pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.price-card{background:#fff;border:1.5px solid #eef0f4;border-radius:20px;padding:36px 28px;position:relative;transition:transform .2s,box-shadow .2s}
.price-card.popular{border-color:#1e50ff;box-shadow:0 20px 50px -20px rgba(30,80,255,.35);transform:translateY(-8px)}
.badge-popular{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:#1e50ff;color:#fff;padding:6px 14px;border-radius:999px;font-size:12px;font-weight:600}
.price-card h3{font-size:20px;margin-bottom:8px}
.price-card .desc{color:#8891a5;font-size:14px;margin-bottom:24px}
.price{font-size:36px;font-weight:800;color:#1e50ff;margin-bottom:24px}
.price small{font-size:16px;color:#8891a5;font-weight:500}
.plan-list{list-style:none;margin-bottom:28px}
.plan-list li{padding:8px 0;color:#4a5060;font-size:14px;display:flex;gap:8px;align-items:center}
.plan-list li::before{content:"✓";color:#1e50ff;font-weight:700}
.price-card .btn{width:100%}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid #eef0f4;border-radius:16px;margin-bottom:16px;overflow:hidden}
.faq-item summary{padding:24px 28px;font-size:17px;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:24px;color:#1e50ff;font-weight:400;transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 28px 24px;color:#556077}
.faq-body ol{padding-left:20px;margin-top:8px}
.faq-body ol li{margin-bottom:6px}

/* Content page */
.page-hero{background:linear-gradient(180deg,#eaf0ff,#f6f9ff);padding:80px 0 60px;text-align:center}
.page-hero h1{font-size:44px;font-weight:800;margin-bottom:16px;letter-spacing:-.01em}
.page-hero p{font-size:17px;color:#6a7386;max-width:640px;margin:0 auto}
.prose{max-width:820px;margin:0 auto;font-size:16px;color:#3a4155}
.prose h2{font-size:26px;font-weight:700;margin:40px 0 16px;color:#1a1a2e}
.prose h3{font-size:20px;font-weight:700;margin:28px 0 12px}
.prose p{margin-bottom:16px}
.prose ul,.prose ol{margin:16px 0 16px 24px}
.prose li{margin-bottom:8px}

/* CTA banner */
.cta-banner{background:linear-gradient(135deg,#1e50ff,#4c78ff);border-radius:28px;padding:56px 40px;text-align:center;color:#fff;margin:0 auto;max-width:960px}
.cta-banner h2{font-size:32px;margin-bottom:12px}
.cta-banner p{opacity:.9;margin-bottom:28px}
.cta-banner .btn{background:#fff;color:#1e50ff}
.cta-banner .btn:hover{background:#f4f7ff}

/* Footer */
.site-footer{background:#0f1428;color:#a8b0c5;padding:64px 0 32px;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.7;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:20px;font-weight:600}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:12px;font-size:14px}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid #1e2540;padding-top:24px;text-align:center;font-size:13px;color:#6a7386}

@media (max-width:900px){
  .hero-grid,.footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:38px}
  .section{padding:64px 0}
  .section-head h2{font-size:32px}
  .feature-grid,.download-grid,.pricing-grid,.review-grid,.review-stats{grid-template-columns:1fr 1fr}
  .hero-stats{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
}
@media (max-width:560px){
  .feature-grid,.download-grid,.pricing-grid,.review-grid,.review-stats{grid-template-columns:1fr}
  .hero h1{font-size:32px}
}