/* Reset */
*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  color: #f4f7ff;
  background: #060915;
}

/* Background layers */
.lbg{
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow:hidden;
}

.lbg-nebula{
  position:absolute;
  inset:-35%;
  background:
    radial-gradient(circle at 18% 28%, rgba(0,188,212,.20), transparent 42%),
    radial-gradient(circle at 80% 72%, rgba(208,75,255,.16), transparent 46%),
    radial-gradient(circle at 52% 86%, rgba(255,255,255,.10), transparent 56%);
  filter: blur(18px);
  transform: rotate(-8deg);
}

.lbg-stars{
  position:absolute;
  inset:0;
  opacity: .18;
  background-repeat: repeat;
  background-size: 520px 520px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='520' height='520'%3E%3Cg fill='white' fill-opacity='.95'%3E%3Ccircle cx='24' cy='30' r='1'/%3E%3Ccircle cx='112' cy='64' r='1.2'/%3E%3Ccircle cx='210' cy='38' r='.9'/%3E%3Ccircle cx='320' cy='94' r='1'/%3E%3Ccircle cx='480' cy='180' r='1.1'/%3E%3Ccircle cx='70' cy='170' r='1'/%3E%3Ccircle cx='150' cy='220' r='1.1'/%3E%3Ccircle cx='260' cy='210' r='1'/%3E%3Ccircle cx='335' cy='265' r='.9'/%3E%3Ccircle cx='55' cy='310' r='1.1'/%3E%3Ccircle cx='205' cy='330' r='1'/%3E%3Ccircle cx='360' cy='350' r='1.2'/%3E%3Ccircle cx='120' cy='380' r='1'/%3E%3C/g%3E%3C/svg%3E");
}

.lbg-grid{
  position:absolute;
  inset:0;
  opacity: .08;
  background-image:
    linear-gradient(rgba(255,255,255,.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.22) 1px, transparent 1px);
  background-size: 78px 78px;
  mask-image: radial-gradient(circle at 50% 42%, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 72%);
}

.lbg-noise{
  position:absolute;
  inset:0;
  opacity:.06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.45'/%3E%3C/svg%3E");
}

/* Layout */
html, body{
  height: 100%;
  overflow: hidden;      /* hide the landing scrollbar */
}

.landing{
  height: 100vh;         /* fill the viewport */
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 0 18px;       /* no top/bottom padding (prevents overflow) */
}


.landing-center{
  width: min(980px, 92vw);
  text-align:center;
  position: relative;
  animation: floaty 10s ease-in-out infinite;
}

@keyframes floaty{
  0%, 100%{ transform: translateY(5px); }
  50%{ transform: translateY(-15px); }
}

/* orbital rings */
.orbits{
  position: absolute;
  width: min(980px, 94vw);
  height: min(980px, 94vw);
  border-radius: 50%;
  pointer-events:none;
  opacity: .70;
  transform: translateY(-10px);
}
.orbits::before{
  content:"";
  position:absolute;
  inset: 6%;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.10);
  mask-image: radial-gradient(circle at 50% 50%, rgba(0,0,0,.18) 0%, rgba(0,0,0,1) 52%, rgba(0,0,0,0) 72%);
}
.orbits::after{
  content:"";
  position:absolute;
  inset: 22%;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.07);
  transform: rotate(18deg);
  opacity: .85;
}

/* Glow behind text */
.glow{
  position:absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -48%);
  width: min(760px, 92vw);
  height: min(420px, 48vw);
  border-radius: 999px;
  pointer-events:none;
  opacity: .55;
  background:
    radial-gradient(circle at 35% 40%, rgba(0,188,212,.18), transparent 55%),
    radial-gradient(circle at 70% 60%, rgba(208,75,255,.14), transparent 58%),
    radial-gradient(circle at 50% 50%, rgba(255,255,255,.06), transparent 60%);
  filter: blur(18px);
}

/* Text */
.kicker{
  color: rgba(244,247,255,.70);
  font-weight: 900;
  letter-spacing: .2px;
  margin-bottom: 10px;
}

.title{
  font-size: clamp(44px, 6vw, 74px);
  line-height: 1.02;
  letter-spacing: -0.06em;
  margin: 10px 0 12px;
  text-shadow: 0 18px 70px rgba(0,0,0,.35);
}

.accent{
  background: linear-gradient(90deg, #00bcd4, #d04bff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.blurb{
  color: rgba(244,247,255,.70);
  font-size: 1.05rem;
  margin: 0 auto 16px;
  max-width: 72ch;
}

.hint{
  color: rgba(244,247,255,.64);
  font-weight: 850;
  font-size: .92rem;
  opacity: .9;
  margin-top: 8px;
}

/* Buttons */
.actions{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap: 10px;
  margin: 10px 0 6px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  backdrop-filter: blur(10px);
  font-weight: 850;
  color: inherit;
  text-decoration:none;
  transition: transform .14s ease, background .14s ease, border-color .14s ease, opacity .14s ease;
}

.btn:hover{
  transform: translateY(-1px);
  background: rgba(255,255,255,.10);
  border-color: rgba(255,255,255,.22);
}

.btn.primary{
  border-color: rgba(0,188,212,.34);
  background: linear-gradient(180deg, rgba(0,188,212,.18), rgba(255,255,255,.04));
}

.btn.primary:hover{
  border-color: rgba(0,188,212,.55);
}

.btn.ghost{
  background: transparent;
  border-color: rgba(255,255,255,.16);
  opacity: .92;
}
.btn.ghost:hover{ opacity: 1; }

/* Mobile spacing  */
@media (max-width: 520px){
  .btn{ width: 100%; max-width: 360px; }
  .actions{ gap: 9px; }
}