:root{--bg:#0b0f14;--panel:#0f141b;--muted:#8a94a7;--text:#e7edf5;--brand:#49a2ff;--accent:#6ee7b7;--border:#1a2230}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:linear-gradient(180deg,#0b0f14,#101620);color:var(--text)}
img{max-width:100%;display:block}
a{color:var(--text);text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.btn{display:inline-block;border:1px solid var(--border);padding:10px 16px;border-radius:10px;background:transparent;color:var(--text);transition:.2s ease}
.btn:hover{transform:translateY(-1px);border-color:var(--brand)}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#081018}
.btn-primary:hover{filter:brightness(1.1)}
.btn-secondary{background:#18202b}
.badge{display:inline-block;background:#17202b;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:6px 10px;font-size:12px}
.badge-btn{cursor:pointer}
.badge-btn:hover{border-color:var(--brand);color:var(--text)}
.badge-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.brand{font-weight:700;letter-spacing:.2px}

.site-header{position:sticky;top:0;background:rgba(11,15,20,.6);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--border);z-index:20}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-links{display:flex;gap:18px}
.nav .btn{padding:8px 12px}

.hero{padding:64px 0;background:radial-gradient(1200px 600px at 80% -10%, rgba(73,162,255,.18), transparent 60%),radial-gradient(900px 500px at 10% 20%, rgba(110,231,183,.12), transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}
.hero-copy h1{margin:0 0 10px;font-size:44px;line-height:1.1}
.hero-copy p{margin:0 0 18px;color:var(--muted)}
.cta{display:flex;gap:12px;margin:18px 0 12px}
.device-frame{border:1px solid var(--border);background:linear-gradient(180deg,#0d131b,#0b1118);box-shadow:0 12px 40px rgba(0,0,0,.45);border-radius:16px;padding:16px}

.section{padding:72px 0}
.section.muted{background:#0d141c}
.bullets{margin:14px 0 0 0;padding-left:18px;color:var(--text)}
.bullets li{margin:8px 0;color:var(--text)}
.bullets li strong{color:var(--text)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:18px}
.hidden{display:none !important}
.feature-card{border:1px solid var(--border);background:var(--panel);border-radius:12px;overflow:hidden}
.feature-card > summary{list-style:none;cursor:pointer;display:flex;flex-direction:column;gap:6px;padding:18px; outline:none}
.feature-card > summary::-webkit-details-marker{display:none}
.feature-card[open] > summary{background:#111827}
.feature-card h3{margin:0;font-size:18px}
.feature-card summary p{margin:0;color:var(--muted)}
.feature-detail{padding:16px;border-top:1px solid var(--border);color:var(--muted)}

.features-master{display:grid;grid-template-columns:320px 1fr;gap:20px;margin-top:18px}
.features-master.hidden{display:none}
.features-left{display:flex;flex-direction:column;gap:10px}
.features-left .tab{border:1px solid var(--border);background:#101620;border-radius:10px;padding:14px;cursor:pointer;color:var(--text);text-align:left}
.features-left .tab:hover{border-color:var(--brand)}
.features-left .tab:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.features-left .tab[aria-selected="true"]{outline:2px solid var(--brand);background:#0d141c;transform:scale(1.02);font-weight:600}
.features-right{border:1px solid var(--border);background:var(--panel);border-radius:12px;padding:18px;display:grid;grid-template-columns:1fr;gap:12px}
.feature-hero{display:flex;align-items:center;justify-content:center;min-height:200px}
.feature-hero img{max-height:260px;width:auto;border:1px solid var(--border);border-radius:10px}
.feature-title{margin:0}
.feature-text{color:var(--muted)}

.pricing-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:18px}
.plan{border:1px solid var(--border);background:var(--panel);border-radius:12px;padding:18px}
.plan.featured{outline:2px solid var(--brand)}
.plan .price{font-size:24px;margin:.2rem 0 0;color:var(--accent)}
.disclaimer{margin-top:10px;color:var(--muted);font-size:13px}

.cta-section{background:linear-gradient(180deg,#0d141c,#0b1118)}
.cta-box{display:grid;gap:10px;justify-items:start;border:1px solid var(--border);background:var(--panel);border-radius:16px;padding:24px}

.download-options{display:flex;flex-direction:column;gap:16px;align-items:center;width:100%}
.app-store-badge{display:inline-block;transition:transform .2s ease}
.app-store-badge:hover{transform:scale(1.05)}
.app-store-badge img{display:block;height:auto;max-width:100%}

/* Responsive sizing for larger screens */
@media (min-width: 768px) {
  .app-store-badge img {
    max-width: 150px;
  }
}

@media (min-width: 1024px) {
  .app-store-badge img {
    max-width: 180px;
  }
}

@media (min-width: 1440px) {
  .app-store-badge img {
    max-width: 200px;
  }
}

.site-footer{border-top:1px solid var(--border);background:#0b1017;padding:26px 0}
.footer-grid{display:flex;align-items:center;justify-content:space-between;gap:16px}
.footer-links{display:flex;gap:14px}

@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .pricing-grid{grid-template-columns:repeat(2,1fr)}
  .features-master{grid-template-columns:1fr}
}
@media (max-width: 640px){
  .nav{height:58px}
  .hero{padding:44px 0}
  .hero-copy h1{font-size:34px}
  .features-grid{grid-template-columns:1fr}
  .pricing-grid{grid-template-columns:1fr}
}


/* Header brand logo sizing/alignment */
.nav .brand{display:flex;align-items:center;gap:10px}
.brand img.logo{display:inline-block;height:36px;width:auto;border-radius:6px;vertical-align:middle}
.brand span{display:inline-block;line-height:1}