/* ===== VPN Proto — design system ===== */
:root{
  --bg:#0b0b16;
  --bg-2:#10101f;
  --surface:#16162a;
  --surface-2:#1c1c34;
  --border:rgba(255,255,255,.08);
  --border-2:rgba(255,255,255,.14);
  --primary:#6366f1;
  --primary-2:#818cf8;
  --accent:#06b6d4;
  --violet:#8b5cf6;
  --success:#22c55e;
  --text:#f4f5fb;
  --muted:#a9abc4;
  --muted-2:#6e7193;
  --radius:18px;
  --radius-sm:12px;
  --maxw:1140px;
  --shadow:0 20px 50px -20px rgba(0,0,0,.6);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{line-height:1.15;font-weight:800;letter-spacing:-.02em}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.container-narrow{max-width:780px}
.grad{background:linear-gradient(120deg,var(--primary-2),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.skip-link{position:absolute;left:-999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;border-radius:8px;z-index:200}
.skip-link:focus{left:12px;top:12px}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-weight:600;font-size:15px;border-radius:12px;border:1px solid transparent;
  padding:12px 22px;cursor:pointer;transition:transform .15s ease,box-shadow .2s ease,background .2s ease;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(120deg,var(--primary),#4f46e5);color:#fff;box-shadow:0 10px 30px -8px rgba(99,102,241,.6)}
.btn-primary:hover{box-shadow:0 14px 38px -8px rgba(99,102,241,.8);transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--border-2);color:var(--text)}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-lg{padding:15px 28px;font-size:16px}

/* ===== nav ===== */
.nav{position:sticky;top:0;z-index:100;background:rgba(11,11,22,.72);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.02em}
.nav-links{display:flex;gap:28px;margin-left:18px}
.nav-links a{color:var(--muted);font-size:15px;font-weight:500;transition:color .15s}
.nav-links a:hover{color:var(--text)}
.nav .btn-primary{margin-left:auto}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px;margin-left:auto}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.25s}
.mobile-menu{display:none;flex-direction:column;gap:6px;padding:12px 24px 22px;border-bottom:1px solid var(--border);background:var(--bg-2)}
.mobile-menu a{padding:12px 6px;color:var(--muted);font-weight:500;border-bottom:1px solid var(--border)}
.mobile-menu a.btn{justify-content:center;border:0;color:#fff;margin-top:8px}
.mobile-menu.open{display:flex}

/* ===== hero ===== */
.hero{position:relative;padding:84px 0 70px;overflow:hidden}
.hero-glow{position:absolute;top:-200px;left:50%;transform:translateX(-50%);width:900px;height:600px;
  background:radial-gradient(closest-side,rgba(99,102,241,.35),transparent 70%);filter:blur(20px);pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.badge{display:inline-block;font-size:13px;font-weight:600;color:var(--primary-2);background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.3);padding:7px 14px;border-radius:999px;margin-bottom:22px}
.hero h1{font-size:clamp(38px,6vw,62px);font-weight:900;margin-bottom:20px}
.lead{font-size:clamp(16px,2.2vw,19px);color:var(--muted);max-width:540px;margin-bottom:30px}
.lead strong{color:var(--text);font-weight:600}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:24px}
.hero-meta{display:flex;gap:22px;flex-wrap:wrap;color:var(--muted-2);font-size:14px;font-weight:500}

/* phone mock */
.hero-visual{display:flex;justify-content:center}
.phone{width:280px;height:560px;border-radius:40px;padding:14px;
  background:linear-gradient(160deg,#232342,#13131f);border:1px solid var(--border-2);
  box-shadow:var(--shadow);position:relative}
.phone::before{content:"";position:absolute;top:20px;left:50%;transform:translateX(-50%);width:90px;height:7px;background:#000;border-radius:99px;opacity:.6}
.phone-screen{height:100%;border-radius:28px;background:radial-gradient(120% 80% at 50% 0%,#1b1b34,#0c0c17);padding:42px 22px 22px;display:flex;flex-direction:column;gap:20px}
.ps-status{text-align:center;padding:22px 0 8px}
.ps-shield{font-size:50px;filter:drop-shadow(0 0 22px rgba(34,197,94,.55))}
.ps-state{font-size:22px;font-weight:800;color:var(--success);margin-top:8px}
.ps-sub{font-size:13px;color:var(--muted)}
.ps-stats{display:flex;gap:12px}
.ps-stats div{flex:1;background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:14px;padding:14px;text-align:center}
.ps-stats b{display:block;font-size:17px;font-weight:800}
.ps-stats span{font-size:11px;color:var(--muted-2)}
.ps-proto{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-top:auto}
.ps-proto span{font-size:11px;font-weight:600;color:var(--muted);background:rgba(255,255,255,.05);border:1px solid var(--border);padding:5px 9px;border-radius:8px}

/* ===== trust strip ===== */
.strip{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--bg-2)}
.strip-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:34px 24px;text-align:center}
.strip-inner b{display:block;font-size:30px;font-weight:900;background:linear-gradient(120deg,var(--primary-2),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.strip-inner span{font-size:13px;color:var(--muted);font-weight:500}

/* ===== sections ===== */
.section{padding:88px 0}
.section-alt{background:var(--bg-2)}
.section-head{text-align:center;max-width:680px;margin:0 auto 52px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.section-head h2{font-size:clamp(28px,4vw,42px);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:17px}

.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:transform .2s ease,border-color .2s ease,background .2s ease}
.card:hover{transform:translateY(-4px);border-color:var(--border-2);background:var(--surface-2)}
.card-ico{font-size:30px;width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.25);border-radius:14px;margin-bottom:18px}
.card h3{font-size:19px;margin-bottom:9px}
.card p{color:var(--muted);font-size:15px}

/* protocols */
.proto-list{display:flex;flex-direction:column;gap:14px;max-width:860px;margin:0 auto}
.proto{display:flex;gap:20px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px 26px;transition:border-color .2s,transform .2s}
.proto:hover{border-color:var(--border-2);transform:translateX(4px)}
.proto-ico{font-size:26px;width:54px;height:54px;flex:0 0 54px;display:flex;align-items:center;justify-content:center;border-radius:14px;background:color-mix(in srgb,var(--c) 16%,transparent);border:1px solid color-mix(in srgb,var(--c) 35%,transparent)}
.proto-body h3{font-size:19px;margin-bottom:6px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.proto-body p{color:var(--muted);font-size:15px}
.tag{font-size:11px;font-weight:700;padding:4px 10px;border-radius:999px;letter-spacing:.02em}
.tag-ok{color:var(--success);background:rgba(34,197,94,.14);border:1px solid rgba(34,197,94,.3)}
.tag-violet{color:var(--violet);background:rgba(139,92,246,.14);border:1px solid rgba(139,92,246,.3)}
.tag-soon{color:var(--muted);background:rgba(255,255,255,.06);border:1px solid var(--border-2)}

/* steps */
.steps .step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px 26px;position:relative}
.step-n{width:42px;height:42px;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:18px;color:#fff;background:linear-gradient(120deg,var(--primary),var(--accent));border-radius:12px;margin-bottom:18px}
.step h3{font-size:19px;margin-bottom:9px}
.step p{color:var(--muted);font-size:15px}

/* platforms */
.platforms .plat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px 22px;text-align:center;transition:border-color .2s,transform .2s}
.plat:hover{transform:translateY(-4px)}
.plat-live{border-color:rgba(34,197,94,.35);background:linear-gradient(180deg,rgba(34,197,94,.06),var(--surface))}
.plat-ico{font-size:40px;margin-bottom:14px;line-height:1}
.plat h3{font-size:19px;margin-bottom:12px}
.plat-link{display:inline-block;margin-top:14px;color:var(--success);font-weight:600;font-size:14px}

/* download */
.download{padding:70px 0}
.dl-box{position:relative;overflow:hidden;text-align:center;background:linear-gradient(135deg,var(--surface-2),var(--surface));border:1px solid var(--border-2);border-radius:28px;padding:64px 32px}
.dl-glow{position:absolute;inset:0;background:radial-gradient(closest-side at 50% 0%,rgba(99,102,241,.3),transparent 70%);pointer-events:none}
.dl-box h2{font-size:clamp(26px,4vw,38px);margin-bottom:14px;position:relative}
.dl-box>p{color:var(--muted);font-size:17px;max-width:520px;margin:0 auto 28px;position:relative}
.dl-box .hero-cta{justify-content:center;position:relative}
.dl-note{font-size:13px;color:var(--muted-2);margin-top:18px;position:relative}

/* faq */
.faq{display:flex;flex-direction:column;gap:12px}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:4px 22px;transition:border-color .2s}
.faq details[open]{border-color:var(--border-2)}
.faq summary{font-weight:600;font-size:16px;padding:18px 0;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--primary-2);font-weight:400;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--muted);font-size:15px;padding:0 0 20px}

/* footer */
.footer{background:var(--bg-2);border-top:1px solid var(--border);padding:56px 0 28px}
.footer-inner{display:grid;grid-template-columns:1.4fr 2fr;gap:40px;padding-bottom:36px;border-bottom:1px solid var(--border)}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:14px;max-width:340px}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer-cols h4{font-size:14px;margin-bottom:14px;color:var(--text)}
.footer-cols a{display:block;color:var(--muted);font-size:14px;padding:6px 0;transition:color .15s}
.footer-cols a:hover{color:var(--text)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;padding-top:24px;color:var(--muted-2);font-size:13px;flex-wrap:wrap}

/* ===== responsive ===== */
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero-copy{order:1}.hero-visual{order:0;margin-bottom:12px}
  .badge{margin-inline:auto}
  .lead{margin-inline:auto}
  .hero-cta,.hero-meta{justify-content:center}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr}
}
@media(max-width:680px){
  .nav-links{display:none}
  .nav .btn-primary{display:none}
  .nav-toggle{display:flex}
  .strip-inner{grid-template-columns:repeat(2,1fr);gap:24px 12px}
  .grid-3,.grid-4{grid-template-columns:1fr}
  .proto{flex-direction:row}
  .section{padding:64px 0}
  .footer-cols{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto;animation:none!important;transition:none!important}}