:root {
  --viewport-width: min(100vw, 1600px);
  --b: calc(var(--viewport-width) / 160);
}

* {
  color: #333333;
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: max(1.6rem, 14px);
  font-weight: 500;
  line-height: 2;
  letter-spacing: 0.1em;
}

a > *,
button > * {
  pointer-events: none;
  color: inherit;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
  letter-spacing: inherit;
}

a,
button {
  display: block;
}

span {
  display: inline-block;
  color: inherit;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
  letter-spacing: inherit;
}

.nolink {
  pointer-events: none;
  opacity: 0.6;
}

body {
  background: linear-gradient(135deg, #a8daff 0%, #ffd1dc 100%);
  min-height: 100vh;
}

.header {
  text-align: center;
  margin-top: 30px;
  margin-bottom: 30px;
  -webkit-animation: fadeInDown 0.6s ease-out;
          animation: fadeInDown 0.6s ease-out;
}
.header__title {
  font-size: 28px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}
.header__subtitle {
  font-size: 14px;
  color: #ffffff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.footer {
  text-align: center;
  margin-top: 40px;
  padding: 20px;
  -webkit-animation: fadeIn 0.6s ease-out 0.3s both;
          animation: fadeIn 0.6s ease-out 0.3s both;
}
.footer__text {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 8px;
}
.footer__link {
  font-size: 12px;
}
.footer__link a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: underline;
}
.footer__link a:hover {
  color: #ffffff;
}
.footer__separator {
  display: inline-block;
  margin: 0 8px;
  color: rgba(255, 255, 255, 0.6);
}

@-webkit-keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@-webkit-keyframes fadeInDown {
  from {
    opacity: 0;
    -webkit-transform: translateY(-20px);
            transform: translateY(-20px);
  }
  to {
    opacity: 1;
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}
@keyframes fadeInDown {
  from {
    opacity: 0;
    -webkit-transform: translateY(-20px);
            transform: translateY(-20px);
  }
  to {
    opacity: 1;
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}
@-webkit-keyframes fadeInUp {
  from {
    opacity: 0;
    -webkit-transform: translateY(20px);
            transform: translateY(20px);
  }
  to {
    opacity: 1;
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}
@keyframes fadeInUp {
  from {
    opacity: 0;
    -webkit-transform: translateY(20px);
            transform: translateY(20px);
  }
  to {
    opacity: 1;
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}
@-webkit-keyframes spin {
  to {
    -webkit-transform: rotate(360deg);
            transform: rotate(360deg);
  }
}
@keyframes spin {
  to {
    -webkit-transform: rotate(360deg);
            transform: rotate(360deg);
  }
}
@media screen and (max-width: 768px) {
  .header__title {
    font-size: 24px;
  }
}