@charset "utf-8";

@import url("sanitize.css");

@keyframes opa1 {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

:root {
  --site-bg: #ecf2f7;
  --surface: #f8fbfd;
  --surface-alt: rgba(248, 251, 253, 0.96);
  --text-base: #000000;
  --text-strong: #10263b;
  --text-muted: #4c6277;
  --text-on-dark: #ffffff;
  --border-strong: rgba(16, 38, 59, 0.1);
  --border-base: rgba(16, 38, 59, 0.07);
  --border-soft: rgba(16, 38, 59, 0.05);
  --accent: #2d638f;
  --accent-strong: #295d8a;
  --accent-bright: #49bbfe;
  --accent-bg: #edf4fa;
  --table-header-bg: #122638;
  --header-gradient: linear-gradient(
    rgba(8, 20, 34, 0.96),
    rgba(5, 14, 24, 0.94)
  );
  --header-gradient-alt: linear-gradient(
    rgba(20, 30, 42, 0.96),
    rgba(8, 16, 26, 0.94)
  );
  --shadow-card-soft: 0 8px 18px rgba(10, 33, 59, 0.05);
  --shadow-card: 0 12px 24px rgba(15, 39, 64, 0.055);
  --shadow-card-strong: 0 18px 38px rgba(12, 28, 45, 0.06);
}

html,
body {
  height: 100%;
  font-size: 13px;
}

body {
  font-family:
    "ヒラギノ丸ゴ Pro", "Hiragino Maru Gothic Pro", "メイリオ", Meiryo, Osaka,
    "ＭＳ Ｐゴシック", "MS PGothic", sans-serif;
  -webkit-text-size-adjust: none;
  background: var(--site-bg);
  color: var(--text-base);
  line-height: 2;
  animation: opa1 0.3s 0.5s both;
}

figure {
  margin: 0;
}

dd {
  margin: 0;
}

nav {
  margin: 0;
  padding: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
}

img {
  border: none;
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

video {
  max-width: 100%;
}

iframe {
  width: 100%;
  max-width: 100%;
}

section + section {
  margin-top: 3rem;
}

a {
  color: #999999;
  transition: 0.3s;
}

a:hover {
  opacity: 0.8;
  color: var(--accent-bright);
}

@media screen and (min-width: 600px) and (max-width: 899px) {
  body {
    font-size: 14px;
    line-height: 1.7;
  }

  h2 {
    font-size: 20px;
    margin-bottom: 15px;
  }

  h3 {
    font-size: 18px;
  }

  table {
    font-size: 13px;
  }

  th,
  td {
    padding: 8px;
  }
}

@media screen and (max-width: 599px) {
  body {
    font-size: 13px;
  }

  h2 {
    font-size: 18px;
  }

  h3 {
    font-size: 16px;
  }

  table {
    font-size: 12px;
  }
}