.welcome-splash {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #000;
  transition: opacity 0.7s ease;
}

.welcome-splash.is-exiting {
  opacity: 0;
  pointer-events: none;
}

.welcome-splash__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.welcome-splash__ambient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 80%, rgba(0, 255, 0, 0.08), transparent 70%);
  pointer-events: none;
}

.welcome-splash__hero {
  position: relative;
  z-index: 10;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 1rem;
}

.welcome-splash__title {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", sans-serif;
  font-weight: 900;
  font-size: clamp(4.5rem, 18vw, 9rem);
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, #0f0, #0fa, #2eff7a, #aaffaa);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 0 0 0.3em;
  animation: welcome-splash-glow 3s infinite alternate;
}

@keyframes welcome-splash-glow {
  0% { text-shadow: 0 0 15px #0f0, 0 0 30px #0f8a3a; }
  100% { text-shadow: 0 0 30px #2eff7a, 0 0 60px #0f0, 0 0 10px #aaffaa; }
}

.welcome-splash__subtitle {
  font-family: "Microsoft YaHei", "PingFang SC", monospace;
  font-size: clamp(1.1rem, 5vw, 1.8rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  color: #caffb0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  padding: 0.6rem 1.5rem;
  border-radius: 60px;
  border: 1px solid rgba(0, 255, 0, 0.5);
  box-shadow: 0 0 18px rgba(0, 255, 0, 0.25);
  margin: 0;
}

.welcome-splash__enter {
  font-family: "Microsoft YaHei", "PingFang SC", monospace;
  font-size: clamp(1.3rem, 6vw, 2.2rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #e0ffc0;
  background: linear-gradient(135deg, rgba(0, 30, 0, 0.7), rgba(0, 60, 0, 0.6));
  backdrop-filter: blur(8px);
  padding: 0.7rem 1.8rem;
  border-radius: 50px;
  margin-top: 2rem;
  border: 1px solid #2eff7a;
  box-shadow: 0 0 25px rgba(50, 255, 50, 0.4);
  cursor: pointer;
  animation: welcome-splash-enter-in 0.8s cubic-bezier(0.2, 0.9, 0.4, 1.2) both;
  transition: transform 0.2s, box-shadow 0.2s;
}

.welcome-splash__enter:hover {
  transform: scale(1.05);
  box-shadow: 0 0 40px rgba(50, 255, 50, 0.6);
}

.welcome-splash__enter:active {
  transform: scale(0.97);
}

@keyframes welcome-splash-enter-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 640px) {
  .welcome-splash__subtitle {
    white-space: normal;
    width: 85%;
    line-height: 1.4;
    font-size: 1rem;
    padding: 0.4rem 1rem;
  }
  .welcome-splash__title {
    letter-spacing: 0.05em;
  }
}