:root{
  --bg:#070d1c;
  --bg2:#0b1733;
  --text:#eaf1ff;
  --muted:#9bb0d0;
  --blue:#3b82f6;
  --blue2:#1d4ed8;
  --blue-light:#60a5fa;
  --ok:#22c55e;
  --err:#ef4444;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%}
body{
  background:
    radial-gradient(1200px 800px at 50% -10%, #1e3a8a 0%, transparent 55%),
    radial-gradient(900px 600px at 90% 110%, #1e40af 0%, transparent 55%),
    linear-gradient(180deg,#070d1c 0%,#0b1733 100%);
  background-attachment:fixed;
  color:var(--text);
  font:16px/1.55 -apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Inter,Roboto,sans-serif;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:48px 20px;
  min-height:100vh;
  overflow-x:hidden;
}

/* ===== Animated background orbs ===== */
.aurora{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.orb{
  position:absolute;
  border-radius:50%;
  filter:blur(90px);
  opacity:.55;
  mix-blend-mode:screen;
  animation:float 18s ease-in-out infinite;
}
.orb.o1{width:520px;height:520px;background:#3b82f6;top:-180px;left:-120px;animation-delay:0s}
.orb.o2{width:460px;height:460px;background:#60a5fa;top:30%;right:-180px;animation-delay:-6s}
.orb.o3{width:600px;height:600px;background:#1d4ed8;bottom:-260px;left:30%;animation-delay:-12s}
@keyframes float{
  0%,100%{transform:translate(0,0) scale(1)}
  33%{transform:translate(40px,-30px) scale(1.05)}
  66%{transform:translate(-30px,40px) scale(.97)}
}
.grid-overlay{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(circle at 50% 50%, #000 30%, transparent 75%);
  -webkit-mask-image:radial-gradient(circle at 50% 50%, #000 30%, transparent 75%);
}

/* ===== Hero ===== */
.hero{
  width:100%;
  max-width:560px;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:28px;
}

.brand-mark{
  display:inline-flex;
  filter:drop-shadow(0 12px 32px rgba(59,130,246,.55));
  animation:pop .7s cubic-bezier(.4,0,.2,1) both;
}
@keyframes pop{from{opacity:0;transform:translateY(-10px) scale(.9)}to{opacity:1;transform:none}}

h1{
  font-size:clamp(28px,5vw,40px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.02em;
  text-wrap:balance;
}
.grad{
  background:linear-gradient(135deg,#93c5fd 0%,#60a5fa 50%,#3b82f6 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

/* ===== CTA Button ===== */
.btn-cta{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  padding:20px 48px;
  border-radius:18px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.005em;
  color:#fff;
  text-decoration:none;
  background:linear-gradient(180deg,#3b82f6,#1d4ed8);
  box-shadow:
    0 1px 0 rgba(255,255,255,.25) inset,
    0 -2px 12px rgba(0,0,0,.2) inset,
    0 18px 40px -12px rgba(59,130,246,.7),
    0 0 0 1px rgba(147,197,253,.25);
  transition:transform .15s,box-shadow .25s,filter .2s;
  isolation:isolate;
  min-width:280px;
  overflow:hidden;
}
.btn-cta:hover{transform:translateY(-2px);filter:brightness(1.08)}
.btn-cta:active{transform:translateY(0);filter:brightness(.95)}
.btn-cta:disabled,.btn-cta[aria-disabled="true"]{filter:grayscale(.5);opacity:.6;cursor:not-allowed;transform:none}
.btn-cta svg{flex-shrink:0}

.btn-glow{
  position:absolute;inset:-2px;border-radius:inherit;
  background:linear-gradient(135deg,#60a5fa,#3b82f6,#1d4ed8,#60a5fa);
  background-size:200% 200%;
  z-index:-1;
  filter:blur(18px);
  opacity:.55;
  animation:shine 4s linear infinite;
}
@keyframes shine{
  0%{background-position:0% 50%}
  100%{background-position:200% 50%}
}

/* ===== Meta list ===== */
.meta{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:10px 14px;
  max-width:480px;
}
.meta li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(147,197,253,.15);
  padding:8px 14px;
  border-radius:99px;
  font-size:13.5px;
  color:var(--muted);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.meta li b{color:var(--text);font-weight:600}
.dot{
  width:6px;height:6px;border-radius:50%;
  background:linear-gradient(135deg,#60a5fa,#3b82f6);
  box-shadow:0 0 8px rgba(96,165,250,.7);
  flex-shrink:0;
}

.hint{
  color:var(--muted);
  font-size:14px;
  max-width:420px;
}

.footer-note{
  margin-top:8px;
  color:#6b7e9c;
  font-size:13px;
  line-height:1.6;
  max-width:460px;
  text-wrap:balance;
}

.notice{
  margin-top:8px;
  display:flex;
  align-items:center;
  gap:14px;
  background:#ffffff;
  color:#0b1733;
  border-radius:16px;
  padding:18px 22px;
  max-width:520px;
  width:100%;
  box-shadow:0 18px 40px -16px rgba(0,0,0,.45), 0 0 0 1px rgba(255,255,255,.08);
  text-align:left;
}
.notice p{
  margin:0;
  font-size:14.5px;
  line-height:1.5;
  font-weight:700;
  color:#0b1733;
}
.notice-ico{
  flex-shrink:0;
  width:34px;height:34px;
  border-radius:50%;
  background:#ef4444;
  color:#fff;
  font-weight:900;
  font-size:20px;
  line-height:34px;
  text-align:center;
  box-shadow:0 6px 18px rgba(239,68,68,.5);
}

/* ===== Toast ===== */
.toast{
  position:fixed;
  bottom:32px;
  left:50%;
  transform:translateX(-50%) translateY(160%);
  background:rgba(15,21,40,.95);
  border:1px solid rgba(147,197,253,.25);
  color:var(--text);
  padding:13px 24px;
  border-radius:13px;
  font-size:14px;
  font-weight:500;
  box-shadow:0 18px 40px rgba(0,0,0,.5);
  transition:transform .35s cubic-bezier(.4,0,.2,1);
  z-index:100;
  pointer-events:none;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.toast.show{transform:translateX(-50%) translateY(0)}
.toast.ok{border-color:var(--ok);color:#bbf7d0}
.toast.err{border-color:var(--err);color:#fecaca}

@media (max-width:480px){
  .btn-cta{min-width:0;width:100%;padding:18px 28px;font-size:16px}
  .meta li{font-size:12.5px;padding:7px 12px}
  body{padding:32px 18px}
}