:root {
  --bg-deep: #060d1a;
  --bg-glow: #0c4a6e;
  --accent: #b6f06b;
  --accent-soft: #38bdf8;
  --text: #f8fafc;
  --muted: #94a3b8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background: radial-gradient(ellipse 120% 80% at 50% 20%, #0f2847 0%, var(--bg-deep) 55%, #020617 100%);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

.welcome-scene {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
}

.welcome-scene::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(56, 189, 248, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 80% 20%, rgba(182, 240, 107, 0.1) 0%, transparent 40%);
  pointer-events: none;
}

.float-icons {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.float-icon {
  position: absolute;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  font-size: 26px;
  animation: floatDrift 14s ease-in-out infinite;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.float-icon:nth-child(1) { top: 12%; left: 8%; animation-delay: 0s; }
.float-icon:nth-child(2) { top: 18%; right: 10%; animation-delay: -2s; }
.float-icon:nth-child(3) { top: 42%; left: 5%; animation-delay: -4s; }
.float-icon:nth-child(4) { top: 55%; right: 6%; animation-delay: -6s; }
.float-icon:nth-child(5) { bottom: 22%; left: 12%; animation-delay: -8s; }
.float-icon:nth-child(6) { bottom: 28%; right: 14%; animation-delay: -10s; }
.float-icon:nth-child(7) { top: 32%; right: 22%; animation-delay: -3s; font-size: 22px; }
.float-icon:nth-child(8) { bottom: 12%; left: 42%; animation-delay: -5s; font-size: 22px; }

@keyframes floatDrift {
  0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.85; }
  50% { transform: translateY(-18px) rotate(4deg); opacity: 1; }
}

.welcome-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 480px;
}

.logo-ring {
  width: 120px;
  height: 120px;
  margin: 0 auto 28px;
  border-radius: 32px;
  padding: 12px;
  background: linear-gradient(145deg, rgba(182, 240, 107, 0.25), rgba(56, 189, 248, 0.15));
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.logo-ring img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 20px;
}

.brand-name {
  margin: 0 0 8px;
  font-size: clamp(2.2rem, 6vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 50%, var(--accent-soft) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.platform-tag {
  display: inline-block;
  margin-bottom: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(182, 240, 107, 0.12);
  border: 1px solid rgba(182, 240, 107, 0.35);
}

.slogan {
  margin: 0 0 28px;
  font-size: clamp(1.05rem, 3vw, 1.25rem);
  line-height: 1.6;
  color: var(--muted);
  font-weight: 500;
}

.welcome-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

.btn-primary {
  background: var(--accent);
  color: #0b1a0a;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.welcome-foot {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.welcome-foot a {
  color: var(--accent-soft);
  text-decoration: none;
  font-weight: 600;
}

.welcome-foot a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  .float-icon { width: 44px; height: 44px; font-size: 20px; }
}