:root{
  --bg:#0b1220;
  --bg2:#0a1020;
  --text:#f3f6ff;
  --muted:#a8b2c8;
  --card:rgba(255,255,255,.03);
  --line:rgba(255,255,255,.10);
  --blue:#2f6bff;
  --cyan:#3cc7ff;
  --radius:18px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Poppins, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background:
    radial-gradient(900px 500px at 50% -10%, rgba(47,107,255,.25), transparent 60%),
    radial-gradient(900px 500px at 15% 10%, rgba(60,199,255,.18), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
}

a{color:inherit}

.container{
  max-width:1120px;
  margin:0 auto;
  padding:0 28px;
}

/* Header (match screenshot) */
header{
  padding: 22px 0;
}
.header-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  font-weight:800;
  letter-spacing:.2px;
  font-size:18px;
}
.brand .appdev{ color: var(--blue); }

.brand-logo{
  width:32px;
  height:32px;
  border-radius:10px;
  filter: drop-shadow(0 10px 20px rgba(0,0,0,.25));
}
nav{
  flex-wrap:wrap;
  justify-content:flex-end;
}
nav a.active{
  opacity: 1;
  position: relative;
}
nav a.active:not(.cta)::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-10px;
  height:2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), #7aa7ff);
  opacity: .9;
}


nav{
  display:flex;
  align-items:center;
  gap:18px;
}
nav a{
  text-decoration:none;
  font-weight:600;
  font-size:14px;
  opacity:.95;
}
nav a:hover{opacity:1}

nav a.cta{
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--blue);
  color:#fff;
  font-weight:700;
  box-shadow: 0 12px 26px rgba(47,107,255,.25);
}

/* Hero */
.hero{
  padding: 88px 0 26px;
  text-align:center;
}
.hero h1{
  margin:0 0 14px;
  font-size: clamp(44px, 6vw, 74px);
  line-height:1.02;
  letter-spacing:-1px;
  font-weight:900;
}
.grad{
  background: linear-gradient(90deg, var(--cyan), #7aa7ff);
  -webkit-background-clip:text;
  background-clip:text;
  color: transparent;
}
.hero p{
  margin:0 auto;
  max-width: 720px;
  color:var(--muted);
  font-size:16px;
}

.buttons{
  display:flex;
  justify-content:center;
  gap:14px;
  flex-wrap:wrap;
  margin-top: 28px;
}

.btn-primary, .btn-outline{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 14px 22px;
  border-radius: 12px;
  text-decoration:none;
  font-weight:700;
  font-size:14px;
  min-width: 170px;
}

.btn-primary{
  background:#fff;
  color:#0b1220;
  border: 1px solid rgba(255,255,255,.18);
}
.btn-outline{
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255,255,255,.18);
}
.btn-outline:hover{ border-color: rgba(255,255,255,.32); }

/* Cards */
.cards{
  padding: 34px 0 72px;
  display:grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.card{
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px;
  min-height: 130px;
}
.card h3{
  margin:0 0 10px;
  font-size:18px;
  font-weight:800;
}
.card p{
  margin:0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.55;
}


.panel h2{
  margin: 0 0 14px;
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -0.4px;
}
.panel h3{
  margin: 22px 0 10px;
  font-size: 18px;
  font-weight: 800;
}
.panel p{
  color: var(--muted);
  line-height: 1.75;
  margin: 0 0 14px;
}
.panel ul{
  margin: 0 0 14px 18px;
  color: var(--muted);
  line-height: 1.75;
}
.hr{
  height:1px;
  background: var(--line);
  margin: 18px 0;
}
.small-note{
  color: rgba(243,246,255,.8);
  font-size: 13px;
}

/* Content sections on internal pages */
.section{
  padding: 22px 0 72px;
}
.panel{
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

footer{
  padding: 28px 0 42px;
  text-align:center;
  color: rgba(243,246,255,.75);
  font-size: 12.5px;
}

/* Responsive */
@media (max-width: 880px){
  .cards{ grid-template-columns: 1fr; }
  nav{ gap:12px; }
  .hero{ padding-top: 70px; }
  nav a{ font-size:13px; }
}