/* ============================================================
   LVCHA VPN Official Verification Hub — style.css
   Deliberately different from lvchavpncn.com: dark teal + gold
   "verified/trust" system instead of the green consumer-app look.
   ============================================================ */
:root{
  --teal:#0d9488; --teal-dark:#0b6e64; --teal-light:#e6f5f3;
  --gold:#c8952a; --gold-light:#faf1de;
  --ink:#0f1b1e; --ink2:#2c3a3d; --muted:#5d6c6f;
  --bg:#ffffff; --bg-alt:#f4f9f8; --border:#dfe8e6;
  --dark:#0a1416; --dark2:#132321;
  --radius:14px; --radius-lg:22px; --radius-xl:28px;
  --shadow:0 6px 24px rgba(10,20,22,.08); --shadow-lg:0 20px 55px rgba(10,20,22,.22);
  --maxw:1180px;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{max-width:100%;overflow-x:hidden}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,"Noto Sans SC",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:76px 0}
.section-alt{background:var(--bg-alt)}
.section-head{text-align:center;max-width:720px;margin:0 auto 44px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:6px;color:var(--gold);font-weight:700;
  font-size:13px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:10px}
.section-head h2{font-size:clamp(24px,3.4vw,36px);font-weight:800;letter-spacing:-.01em}
.section-head p{color:var(--muted);margin-top:12px;font-size:17px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-weight:700;border-radius:10px;padding:14px 28px;cursor:pointer;border:0;
  transition:transform .14s var(--ease-out),box-shadow .14s var(--ease-out),background .18s ease;font-size:16px}
@media (hover:hover) and (pointer:fine){ .btn:hover{transform:translateY(-2px)} }
.btn:active{transform:translateY(0) scale(.98)}
.btn-primary{background:var(--teal);color:#fff;box-shadow:0 8px 20px rgba(13,148,136,.3)}
.btn-primary:hover{background:var(--teal-dark)}
.btn-gold{background:var(--gold);color:#fff;box-shadow:0 8px 20px rgba(200,149,42,.3)}
.btn-gold:hover{background:#a97b1f}
.btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.35)}
@media (hover:hover) and (pointer:fine){ .btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.08)} }

/* ---------- header ---------- */
.top-strip{height:5px;background:linear-gradient(90deg,var(--teal),var(--gold))}
.header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{display:flex;align-items:center;gap:8px;font-weight:900;font-size:20px;letter-spacing:.3px;color:var(--ink)}
.nav-logo .dot{color:var(--teal)}
.nav-logo .seal{width:22px;height:22px;flex:none}
.nav-right{display:flex;align-items:center;gap:26px}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{position:relative;font-weight:600;color:var(--ink2);font-size:15px;padding:4px 0}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--teal);
  transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease-out)}
.nav-links a:hover,.nav-links a.active{color:var(--teal)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.mobile-cta{display:none}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:42px;height:42px;font-size:26px;color:var(--ink)}

/* ---------- hero (verification-seal theme, no phone mockup) ---------- */
.hero{background:radial-gradient(120% 140% at 15% 0%,#123632 0%,var(--dark2) 45%,var(--dark) 100%);
  color:#fff;padding:88px 0 96px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;
  background:radial-gradient(60% 60% at 85% 15%,rgba(200,149,42,.16),transparent 70%)}
.hero .container{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(200,149,42,.14);
  border:1px solid rgba(200,149,42,.4);color:var(--gold);font-weight:700;font-size:13px;
  padding:7px 16px;border-radius:999px;margin-bottom:22px}
.hero h1{font-size:clamp(32px,5vw,52px);font-weight:900;letter-spacing:-.02em;line-height:1.18;color:#fff}
.hero .lead{margin-top:18px;color:rgba(255,255,255,.72);font-size:17px;max-width:520px}
.hero-cta-row{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:44px}
.hero-stats .item{}
.hero-stats .n{font-size:26px;font-weight:900;color:var(--gold)}
.hero-stats .s{font-size:13px;color:rgba(255,255,255,.6);margin-top:2px}

/* seal / badge visual */
.seal-wrap{display:flex;justify-content:center}
.seal{width:280px;height:280px;position:relative;display:flex;align-items:center;justify-content:center}
.seal .ring{position:absolute;inset:0;border-radius:50%;border:2px solid rgba(200,149,42,.3)}
.seal .ring.r2{inset:22px;border-color:rgba(13,148,136,.35)}
.seal .core{width:170px;height:170px;border-radius:50%;
  background:linear-gradient(155deg,var(--teal),#0a5a52);
  box-shadow:0 0 0 0 rgba(13,148,136,.45);display:flex;align-items:center;justify-content:center;
  animation:seal-pulse 2.6s var(--ease-in-out) infinite}
.seal .core svg{width:72px;height:72px}
@keyframes seal-pulse{
  0%{box-shadow:0 0 0 0 rgba(13,148,136,.45)}
  70%{box-shadow:0 0 0 26px rgba(13,148,136,0)}
  100%{box-shadow:0 0 0 0 rgba(13,148,136,0)}
}
@media (prefers-reduced-motion: reduce){ .seal .core{animation:none} }

/* ---------- verify steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:30px;
  position:relative;transition:transform .18s var(--ease-out),box-shadow .18s var(--ease-out)}
@media (hover:hover) and (pointer:fine){ .step:hover{transform:translateY(-4px);box-shadow:var(--shadow)} }
.step .num{width:38px;height:38px;border-radius:10px;background:var(--teal-light);color:var(--teal-dark);
  font-weight:900;font-size:17px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.step h3{font-size:17px;font-weight:800;margin-bottom:10px}
.step p{color:var(--muted);font-size:14.5px}
.step code{background:var(--bg-alt);border-radius:6px;padding:2px 8px;font-size:13.5px;color:var(--teal-dark);font-weight:700}

/* ---------- feature grid ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.feature-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;
  transition:transform .18s var(--ease-out),box-shadow .18s var(--ease-out)}
@media (hover:hover) and (pointer:fine){ .feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)} }
.feature-card i{width:46px;height:46px;border-radius:12px;background:var(--teal-light);color:var(--teal-dark);
  display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:14px;font-style:normal;font-weight:800}
.feature-card h3{font-size:17px;font-weight:800;margin-bottom:8px}
.feature-card p{color:var(--muted);font-size:14.5px}

/* ---------- comparison table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:#fff}
table.compare{width:100%;border-collapse:collapse;min-width:560px}
table.compare th,table.compare td{padding:14px 18px;text-align:center;border-bottom:1px solid var(--border);font-size:14.5px}
table.compare thead th{background:var(--dark);color:#fff;font-weight:700}
table.compare thead th.hl-col{background:var(--teal)}
table.compare tbody td:first-child{text-align:left;color:var(--ink2);font-weight:600}
table.compare .yes{color:var(--teal-dark);font-weight:800}
table.compare .no{color:var(--muted)}
.cta-row{text-align:center;margin-top:30px}

/* ---------- trust bar ---------- */
.trust-bar{background:var(--dark);color:rgba(255,255,255,.8);padding:20px 0}
.trust-bar .container{display:flex;justify-content:center;gap:44px;flex-wrap:wrap;font-size:14px}
.trust-bar .item{display:flex;align-items:center;gap:8px}
.trust-bar .item i{color:var(--gold)}

/* ---------- FAQ accordion ---------- */
.faq-list{max-width:780px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{width:100%;background:none;border:0;text-align:left;padding:18px 0;font-size:16px;font-weight:700;
  cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--ink);gap:16px}
.faq-q .chev{transition:transform .2s var(--ease-out);color:var(--teal);flex:none}
.faq-item.open .faq-q .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease-in-out)}
.faq-a p{padding:0 0 18px;color:var(--muted);font-size:15px;line-height:1.7}
.faq-item.open .faq-a{max-height:420px}

/* ---------- blog / articles ---------- */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.blog-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:26px;
  transition:transform .18s var(--ease-out),box-shadow .18s var(--ease-out)}
@media (hover:hover) and (pointer:fine){ .blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)} }
.blog-card .tag{display:inline-block;color:var(--teal);font-weight:700;font-size:13px;margin-bottom:10px}
.blog-card h3{font-size:17px;font-weight:800;margin-bottom:8px;line-height:1.4}
.blog-card p{color:var(--muted);font-size:14px}
.blog-card .more{display:inline-block;margin-top:14px;font-weight:700;color:var(--teal);font-size:14px}

/* ---------- CTA band ---------- */
.cta-band{background:var(--teal-light);border-radius:var(--radius-lg);padding:36px;text-align:center;margin:40px 0}
.cta-band h3{font-size:20px;font-weight:800;color:var(--teal-dark);margin-bottom:14px}

/* ---------- inner page hero + prose ---------- */
.page-hero{background:linear-gradient(150deg,var(--dark2),var(--dark));color:#fff;text-align:center;padding:64px 0}
.page-hero h1{font-size:clamp(28px,4vw,42px);font-weight:900;color:#fff}
.page-hero p{opacity:.75;margin-top:10px;max-width:600px;margin-left:auto;margin-right:auto}
.prose{max-width:820px;margin:0 auto;padding:56px 20px}
.prose h2{font-size:22px;font-weight:800;margin:30px 0 12px}
.prose h3{font-size:18px;font-weight:700;margin:22px 0 8px}
.prose p,.prose li{color:var(--ink2);margin-bottom:10px}
.prose ul{padding-left:20px;list-style:disc}
.prose ul li{margin-bottom:6px}
.prose table{width:100%;border-collapse:collapse;margin:16px 0}
.prose th,.prose td{border:1px solid var(--border);padding:10px 12px;text-align:left;font-size:14.5px}
.prose thead th{background:var(--bg-alt)}
.prose code{background:var(--bg-alt);border-radius:6px;padding:2px 8px;font-size:13.5px;color:var(--teal-dark);font-weight:700}

/* ---------- footer ---------- */
.footer{background:var(--dark);color:rgba(255,255,255,.65);padding:56px 0 28px}
.footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;margin-bottom:34px}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer a{display:block;color:rgba(255,255,255,.6);padding:5px 0;font-size:14px;transition:color .15s ease}
.footer a:hover{color:var(--gold)}
.footer .brand{display:flex;align-items:center;gap:8px;font-weight:900;font-size:20px;color:#fff}
.footer .brand .dot{color:var(--teal)}
.footer .tagline{margin-top:12px;font-size:14px;color:rgba(255,255,255,.5);max-width:280px}
.footer .bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:13px;color:rgba(255,255,255,.45)}

/* ---------- scroll-reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease-out),transform .5s var(--ease-out)}
.reveal.in{opacity:1;transform:translateY(0)}
.reveal-stagger > *{opacity:0;transform:translateY(14px);transition:opacity .45s var(--ease-out),transform .45s var(--ease-out)}
.reveal-stagger.in > *{opacity:1;transform:translateY(0)}
.reveal-stagger.in > *:nth-child(1){transition-delay:0ms}
.reveal-stagger.in > *:nth-child(2){transition-delay:50ms}
.reveal-stagger.in > *:nth-child(3){transition-delay:100ms}
.reveal-stagger.in > *:nth-child(4){transition-delay:150ms}
.reveal-stagger.in > *:nth-child(5){transition-delay:200ms}
.reveal-stagger.in > *:nth-child(6){transition-delay:250ms}
@media (prefers-reduced-motion: reduce){
  .reveal,.reveal-stagger > *{transition:opacity .25s ease !important;transform:none !important;opacity:1}
  *,*::before,*::after{transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:900px){
  .hero .container{grid-template-columns:1fr;text-align:center}
  .hero-badge,.hero .lead{margin-left:auto;margin-right:auto}
  .hero-cta-row,.hero-stats{justify-content:center}
  .seal{width:220px;height:220px;margin-top:20px}
  .seal .core{width:130px;height:130px}
  .seal .core svg{width:54px;height:54px}
  .steps{grid-template-columns:1fr}
  .blog-grid{grid-template-columns:repeat(2,1fr)}
  .footer .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .section{padding:52px 0}
  .container.nav{padding-right:8px}
  .nav-right{display:none}
  .nav-toggle{display:block}
  .nav-links{display:none;position:fixed;top:69px;left:0;right:0;width:100vw;height:calc(100vh - 69px);
    background:#fff;z-index:999;flex-direction:column;align-items:center;gap:0;padding:10px 20px 26px;
    overflow-y:auto;border-top:1px solid var(--border)}
  .nav-links.open{display:flex}
  .nav-links li{width:100%;max-width:420px}
  .nav-links a{display:block;width:100%;text-align:center;padding:16px 0;font-size:18px;border-bottom:1px solid var(--border)}
  .nav-links a::after{display:none}
  .nav-links a:hover{color:var(--teal)}
  .mobile-cta{display:block;margin-top:18px;text-align:center}
  .mobile-cta .btn{width:auto;display:inline-flex}
  .blog-grid{grid-template-columns:1fr}
  .trust-bar .container{gap:20px}
}
@media (max-width:560px){
  .hero-stats{gap:24px}
  .footer .cols{grid-template-columns:1fr}
}
@media (min-width:769px){ .nav-toggle{display:none} }