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

body {
  font-family: "Noto Sans JP", sans-serif;
  background-color: #0a0a0a;
  color: #f0f0f0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
}

.content {
  text-align: center;
  max-width: 600px;
}

.brand {
  font-size: 3rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #ffffff;
}

.divider {
  width: 60px;
  height: 2px;
  background-color: #444;
  margin: 1.5rem auto;
}

.heading {
  font-size: 1.25rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #999;
  margin-bottom: 1.5rem;
}

.message {
  font-size: 1rem;
  font-weight: 300;
  color: #777;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.contact a {
  display: inline-block;
  color: #f0f0f0;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  padding: 0.75rem 2rem;
  border: 1px solid #333;
  border-radius: 2px;
  transition: border-color 0.3s ease, color 0.3s ease;
}

.contact a:hover {
  border-color: #888;
  color: #ffffff;
}

.footer {
  position: absolute;
  bottom: 2rem;
  text-align: center;
}

.footer p {
  font-size: 0.75rem;
  color: #444;
  letter-spacing: 0.05em;
}

@media (max-width: 480px) {
  .brand {
    font-size: 2rem;
  }

  .heading {
    font-size: 1rem;
  }

  .message {
    font-size: 0.9rem;
  }
}