* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
  color: #ffffff;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

.stars {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.star {
  position: absolute;
  width: 2px;
  height: 2px;
  background: #ffffff;
  border-radius: 50%;
  animation: twinkle 3s infinite;
}

@keyframes twinkle {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 1;
  }
}

.container {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero {
  text-align: center;
  padding: 80px 0;
  position: relative;
}

.logo {
  position: relative;
  display: inline-block;
  margin-bottom: 40px;
}

.logo-text {
  font-family: "Orbitron", monospace;
  font-size: 3rem;
  font-weight: 900;
  background: linear-gradient(45deg, #00f5ff, #ff00ff, #00ff00);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-shift 3s ease-in-out infinite;
  position: relative;
  z-index: 2;
}

.logo-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, #00f5ff, #ff00ff, #00ff00);
  background-size: 200% 200%;
  animation: gradient-shift 3s ease-in-out infinite;
  filter: blur(20px);
  opacity: 0.5;
  z-index: 1;
}

@keyframes gradient-shift {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
}

.highlight {
  background: linear-gradient(45deg, #00f5ff, #ff00ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 30px rgba(0, 245, 255, 0.5);
}

.hero-subtitle {
  font-size: 1.2rem;
  opacity: 0.8;
  margin-bottom: 40px;
  line-height: 1.6;
}

.features {
  padding: 80px 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.feature-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(0, 245, 255, 0.2);
  border-radius: 15px;
  padding: 40px 30px;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 245, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

.feature-card:hover::before {
  left: 100%;
}

.feature-card:hover {
  transform: translateY(-10px);
  border-color: rgba(0, 245, 255, 0.5);
  box-shadow: 0 20px 40px rgba(0, 245, 255, 0.1);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 10px rgba(0, 245, 255, 0.5));
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: #00f5ff;
}

.pricing {
  padding: 80px 0;
  text-align: center;
}

.pricing-card {
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(0, 245, 255, 0.3);
  border-radius: 20px;
  padding: 50px;
  max-width: 400px;
  margin: 0 auto;
  backdrop-filter: blur(15px);
  position: relative;
  overflow: hidden;
}

.pricing-card::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, #00f5ff, #ff00ff, #00ff00, #00f5ff);
  background-size: 400% 400%;
  border-radius: 20px;
  z-index: -1;
  animation: border-glow 4s ease-in-out infinite;
}

@keyframes border-glow {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.pricing-header h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: #00f5ff;
}

.price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: 30px;
}

.currency {
  font-size: 1.5rem;
  opacity: 0.8;
}

.amount {
  font-size: 4rem;
  font-weight: 900;
  font-family: "Orbitron", monospace;
  color: #00f5ff;
  text-shadow: 0 0 20px rgba(0, 245, 255, 0.5);
}


.amount {
  font-size: 4rem;
  font-weight: 900;
  font-family: "Orbitron", monospace;
  text-shadow: 0 0 20px rgba(0, 245, 255, 0.5);
}




.period {
  font-size: 1.2rem;
  opacity: 0.8;
  margin-left: 5px;
}

.pricing-features {
  margin-bottom: 40px;
}

.feature {
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 1.1rem;
}

.feature:last-child {
  border-bottom: none;
}

.cta-button {
  background: linear-gradient(45deg, #00f5ff, #ff00ff);
  border: none;
  border-radius: 50px;
  padding: 20px 50px;
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.button-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, #00f5ff, #ff00ff);
  filter: blur(15px);
  opacity: 0.7;
  z-index: -1;
}

.demo {
  padding: 80px 0;
  text-align: center;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 50px;
  color: #00f5ff;
}

.demo-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.demo-input,
.demo-output {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(0, 245, 255, 0.2);
  border-radius: 15px;
  padding: 30px;
  min-width: 300px;
  backdrop-filter: blur(10px);
}

.input-label,
.output-label {
  font-size: 0.9rem;
  color: #00f5ff;
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.demo-text {
  font-size: 1.1rem;
  line-height: 1.6;
}

.demo-arrow {
  font-size: 2rem;
  color: #00f5ff;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.5;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}

.footer {
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.6;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .logo-text {
    font-size: 2rem;
  }

  .demo-container {
    flex-direction: column;
  }

  .demo-arrow {
    transform: rotate(90deg);
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }
}