:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #050816;
  color: #f4f7ff;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(78, 157, 255, 0.14), transparent 24%),
              radial-gradient(circle at bottom right, rgba(132, 79, 255, 0.18), transparent 24%),
              linear-gradient(135deg, #070b18 0%, #0e1730 100%);
  overflow: hidden;
}

.page-shell {
  position: relative;
  padding: 40px;
  max-width: 1000px;
  width: 100%;
}

.hero-card {
  position: relative;
  z-index: 2;
  padding: 46px 42px 42px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 34px;
  backdrop-filter: blur(20px);
  background: rgba(5, 8, 22, 0.78);
  box-shadow: 0 28px 120px rgba(4, 7, 20, 0.55);
  overflow: hidden;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(52, 107, 255, 0.15);
  color: #9cc7ff;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

h1 {
  margin: 28px 0 16px;
  font-size: clamp(2.8rem, 4vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
  text-transform: uppercase;
  background: linear-gradient(90deg, #9cbef5, #7e72ff 45%, #7fd2ff);
  -webkit-background-clip: text;
  color: transparent;
}

p {
  margin: 0 0 34px;
  max-width: 620px;
  font-size: 1.05rem;
  line-height: 1.85;
  color: rgba(244, 247, 255, 0.8);
}

.countdown {
  display: grid;
  grid-template-columns: repeat(4, minmax(80px, 1fr));
  gap: 16px;
  margin-bottom: 26px;
}

.time-box {
  padding: 22px 16px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  text-align: center;
  transition: transform 0.3s ease;
}

.time-box:hover {
  transform: translateY(-4px);
}

.value {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  color: #f9fcff;
}

.label {
  display: block;
  margin-top: 10px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.78rem;
  color: rgba(232, 239, 255, 0.72);
}

.note {
  font-size: 0.95rem;
  color: rgba(244, 247, 255, 0.75);
}

.glow-ring {
  position: absolute;
  border-radius: 50%;
  filter: blur(24px);
  opacity: 0.75;
  animation: float 11s ease-in-out infinite;
}

.ring-1 {
  width: 300px;
  height: 300px;
  top: -90px;
  left: -80px;
  background: rgba(94, 153, 255, 0.18);
}

.ring-2 {
  width: 240px;
  height: 240px;
  bottom: -110px;
  right: -90px;
  background: rgba(168, 96, 255, 0.2);
  animation-duration: 13s;
}

.ring-3 {
  width: 200px;
  height: 200px;
  top: 40%;
  right: -110px;
  background: rgba(85, 229, 255, 0.14);
  animation-duration: 9s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-18px) scale(1.02); }
}

@media (max-width: 720px) {
  body {
    padding: 12px;
    justify-content: center;
  }
  .page-shell {
    padding: 0;
    max-width: 100%;
  }
  .hero-card {
    padding: 26px 18px 26px;
    border-radius: 26px;
    margin: 0 auto;
  }
  .brand-badge {
    font-size: 0.78rem;
    padding: 8px 12px;
  }
  h1 {
    font-size: clamp(2rem, 8vw, 2.8rem);
    margin: 20px 0 14px;
  }
  p {
    margin-bottom: 24px;
    font-size: 1rem;
    max-width: 100%;
  }
  .countdown {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .time-box {
    padding: 18px 14px;
  }
  .value {
    font-size: 1.8rem;
  }
  .label {
    font-size: 0.72rem;
  }
  .note {
    font-size: 0.9rem;
  }
  .ring-1, .ring-2, .ring-3 {
    display: none;
  }
}

@media (max-width: 520px) {
  body {
    padding: 10px;
  }
  .hero-card {
    padding: 22px 16px 22px;
  }
  .countdown {
    grid-template-columns: 1fr;
  }
  .time-box {
    padding: 16px 14px;
  }
  .value {
    font-size: 1.7rem;
  }
  .label {
    font-size: 0.7rem;
  }
}