*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0e1a;--bg2:#111827;--bg3:#1a2035;
  --text:#e2e8f0;--text2:#94a3b8;--text3:#64748b;
  --accent:#4a9eff;--accent2:#3b82f6;
  --green:#00e87b;--green2:#00c566;
  --red:#ff6b6b;
  --border:#1e293b;
  --card:#151c2e;
  --radius:12px;--radius-sm:8px;
  --max-w:1140px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,sans-serif;
  --mono:"Cascadia Code","Fira Code",Consolas,monospace;
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:var(--green)}
img{max-width:100%;display:block}
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}

/* NAV */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(10,14,26,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.nav.scrolled{box-shadow:0 4px 24px rgba(0,0,0,.4)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;max-width:var(--max-w);margin:0 auto;padding:0 24px;height:64px}
.nav-logo{font-size:1.25rem;font-weight:700;color:#fff;display:flex;align-items:center;gap:8px}
.nav-logo svg{width:28px;height:28px}
.nav-links{display:flex;gap:28px;list-style:none;align-items:center}
.nav-links a{color:var(--text2);font-size:.9rem;font-weight:500;transition:color .2s}
.nav-links a:hover{color:#fff}
.nav-cta{background:var(--green);color:#0a0e1a!important;padding:8px 20px;border-radius:var(--radius-sm);font-weight:600;font-size:.85rem;transition:background .2s}
.nav-cta:hover{background:var(--green2);color:#0a0e1a!important}
.nav-lang{position:relative}
.nav-lang-btn{background:transparent;border:1px solid var(--border);color:var(--text2);padding:6px 12px;border-radius:var(--radius-sm);cursor:pointer;font-size:.8rem;display:flex;align-items:center;gap:4px}
.nav-lang-btn:hover{border-color:var(--accent);color:#fff}
.nav-lang-menu{display:none;position:absolute;top:calc(100% + 8px);right:0;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);min-width:140px;overflow:hidden;box-shadow:0 8px 32px rgba(0,0,0,.5)}
.nav-lang-menu.open{display:block}
.nav-lang-menu a{display:block;padding:10px 16px;color:var(--text2);font-size:.85rem;transition:background .15s}
.nav-lang-menu a:hover{background:var(--bg3);color:#fff}
.nav-lang-menu a.active{color:var(--accent)}
.burger{display:none;background:0;border:0;cursor:pointer;padding:4px}
.burger span{display:block;width:24px;height:2px;background:var(--text);margin:5px 0;transition:transform .3s,opacity .3s}

/* HERO */
.hero{padding:140px 0 80px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-200px;left:50%;transform:translateX(-50%);width:800px;height:800px;background:radial-gradient(circle,rgba(74,158,255,.08) 0%,transparent 70%);pointer-events:none}
.hero h1{font-size:3.2rem;font-weight:800;line-height:1.15;margin-bottom:20px;letter-spacing:-.02em}
.hero h1 span{color:var(--accent)}
.hero .subtitle{font-size:1.2rem;color:var(--text2);max-width:560px;margin:0 auto 36px;line-height:1.6}
.hero-cta{display:inline-flex;align-items:center;gap:10px;background:var(--green);color:#0a0e1a;padding:16px 36px;border-radius:var(--radius);font-size:1.05rem;font-weight:700;transition:transform .2s,box-shadow .2s;box-shadow:0 0 40px rgba(0,232,123,.15)}
.hero-cta:hover{transform:translateY(-2px);box-shadow:0 8px 40px rgba(0,232,123,.25);color:#0a0e1a}
.hero-cta svg{width:20px;height:20px}
.hero-badge{display:inline-block;margin-top:20px;font-size:.8rem;color:var(--text3)}

/* TRUST BAR */
.trust{padding:40px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--bg2)}
.trust-grid{display:flex;justify-content:center;gap:48px;flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:10px;color:var(--text2);font-size:.9rem;font-weight:500}
.trust-item svg{width:20px;height:20px;color:var(--accent);flex-shrink:0}

/* FEATURES */
.features{padding:100px 0}
.section-label{text-align:center;text-transform:uppercase;letter-spacing:.15em;font-size:.75rem;color:var(--accent);font-weight:600;margin-bottom:12px}
.section-title{text-align:center;font-size:2.2rem;font-weight:700;margin-bottom:16px}
.section-sub{text-align:center;color:var(--text2);max-width:560px;margin:0 auto 56px;font-size:1rem}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px 28px;transition:border-color .3s,transform .3s}
.feature-card:hover{border-color:var(--accent);transform:translateY(-4px)}
.feature-icon{width:48px;height:48px;background:rgba(74,158,255,.1);border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.feature-icon svg{width:24px;height:24px;color:var(--accent)}
.feature-card h3{font-size:1.1rem;font-weight:600;margin-bottom:10px}
.feature-card p{color:var(--text2);font-size:.9rem;line-height:1.6}

/* HOW IT WORKS */
.how{padding:100px 0;background:var(--bg2)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:0}
.step{text-align:center;position:relative}
.step-num{width:56px;height:56px;border-radius:50%;background:rgba(74,158,255,.12);border:2px solid var(--accent);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:1.3rem;font-weight:700;color:var(--accent)}
.step h3{font-size:1.1rem;font-weight:600;margin-bottom:8px}
.step p{color:var(--text2);font-size:.9rem;max-width:280px;margin:0 auto}

/* SECURITY */
.security{padding:100px 0}
.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.security-text h2{font-size:2rem;font-weight:700;margin-bottom:20px}
.security-text p{color:var(--text2);line-height:1.7;margin-bottom:16px}
.security-specs{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px}
.spec-row{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--border)}
.spec-row:last-child{border-bottom:0}
.spec-label{color:var(--text2);font-size:.9rem}
.spec-value{font-weight:600;font-size:.9rem;color:var(--green);font-family:var(--mono)}

/* USE CASES */
.usecases{padding:100px 0;background:var(--bg2)}
.usecase-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.usecase{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;display:flex;gap:16px;align-items:start;transition:border-color .3s}
.usecase:hover{border-color:var(--accent)}
.usecase-icon{width:40px;height:40px;background:rgba(0,232,123,.1);border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.usecase-icon svg{width:20px;height:20px;color:var(--green)}
.usecase h3{font-size:1rem;font-weight:600;margin-bottom:6px}
.usecase p{color:var(--text2);font-size:.85rem}

/* DOWNLOAD */
.download{padding:100px 0;text-align:center}
.download h2{font-size:2.4rem;font-weight:700;margin-bottom:16px}
.download .subtitle{color:var(--text2);margin-bottom:40px;font-size:1rem}
.dl-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:40px;max-width:520px;margin:0 auto}
.dl-btn{display:inline-flex;align-items:center;gap:10px;background:var(--green);color:#0a0e1a;padding:16px 40px;border-radius:var(--radius);font-size:1.1rem;font-weight:700;margin-bottom:24px;transition:transform .2s,box-shadow .2s;box-shadow:0 0 40px rgba(0,232,123,.15)}
.dl-btn:hover{transform:translateY(-2px);box-shadow:0 8px 40px rgba(0,232,123,.25);color:#0a0e1a}
.dl-meta{display:grid;grid-template-columns:1fr 1fr;gap:12px;text-align:left;margin-top:20px}
.dl-meta-item{font-size:.85rem;color:var(--text2)}
.dl-meta-item strong{color:var(--text);display:block;margin-bottom:2px}
.dl-checksum{margin-top:16px;font-size:.75rem;color:var(--text3);word-break:break-all}
.dl-checksum strong{color:var(--text2);margin-right:6px}
.dl-checksum code{font-family:var(--mono);color:var(--text2);font-size:.7rem}

/* FAQ */
.faq{padding:100px 0;background:var(--bg2)}
.faq-list{max-width:720px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{width:100%;background:0;border:0;color:var(--text);padding:20px 0;font-size:1rem;font-weight:600;text-align:left;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-family:var(--font)}
.faq-q:hover{color:var(--accent)}
.faq-q svg{width:20px;height:20px;transition:transform .3s;flex-shrink:0;color:var(--text3)}
.faq-q.open svg{transform:rotate(45deg);color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s;padding:0 0}
.faq-a.open{max-height:300px;padding:0 0 20px}
.faq-a p{color:var(--text2);font-size:.9rem;line-height:1.7}

/* FOOTER */
.footer{padding:48px 0 32px;border-top:1px solid var(--border)}
.footer-inner{display:flex;justify-content:space-between;align-items:start;flex-wrap:wrap;gap:32px}
.footer-brand{max-width:280px}
.footer-brand .nav-logo{margin-bottom:12px}
.footer-brand p{color:var(--text3);font-size:.85rem;line-height:1.6}
.footer-links{display:flex;gap:48px}
.footer-col h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text3);margin-bottom:12px}
.footer-col a{display:block;color:var(--text2);font-size:.85rem;margin-bottom:8px;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:40px;padding-top:24px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom p{color:var(--text3);font-size:.8rem}
.footer-company{color:var(--text3);font-size:.8rem}
.footer-company a{color:var(--text2)}

/* ANIMATIONS */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:none}

/* MOBILE */
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .security-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .hero h1{font-size:2.2rem}
  .hero .subtitle{font-size:1rem}
  .features-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:32px}
  .usecase-grid{grid-template-columns:1fr}
  .dl-meta{grid-template-columns:1fr}
  .trust-grid{gap:24px}
  .section-title{font-size:1.7rem}
  .nav-links{display:none;position:fixed;top:64px;left:0;right:0;bottom:0;background:var(--bg);flex-direction:column;padding:32px 24px;gap:20px}
  .nav-links.open{display:flex}
  .nav-links a{font-size:1.1rem}
  .burger{display:block}
  .footer-inner{flex-direction:column}
  .footer-links{flex-direction:column;gap:24px}
  .footer-bottom{flex-direction:column;text-align:center}
  .security-text h2{font-size:1.6rem}
  .download h2{font-size:1.8rem}
}
@media(max-width:480px){
  .hero h1{font-size:1.8rem}
  .hero-cta{padding:14px 28px;font-size:.95rem}
  .trust-grid{flex-direction:column;align-items:center;gap:16px}
  .container{padding:0 16px}
  .nav-inner{padding:0 16px}
}