body.training-header-enabled {
  --training-header-height: 76px;
}

.training-site-header,
.training-site-header * {
  box-sizing: border-box;
}

.training-site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--training-header-height);
  min-height: 0;
  margin: 0;
  padding: 0;
  overflow: visible;
  border-bottom: 1px solid rgba(24, 32, 29, 0.12);
  color: #18201d;
  background: rgba(246, 241, 231, 0.94);
  backdrop-filter: blur(14px);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

.training-header-inner {
  width: min(1180px, calc(100% - 48px));
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
  margin-inline: auto;
}

.training-brand {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #18201d;
  text-decoration: none;
  touch-action: manipulation;
}

.training-brand-mark {
  width: 52px;
  height: 52px;
  flex: 0 0 auto;
  display: block;
  object-fit: contain;
  filter: drop-shadow(2px 3px 0 rgba(230, 201, 173, 0.9));
}

.training-brand b,
.training-brand small {
  display: block;
  line-height: 1.25;
}

.training-brand b {
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
  font-size: 16px;
  letter-spacing: 0.03em;
}

.training-brand small {
  margin-top: 2px;
  color: #5e6863;
  font-size: 11px;
  letter-spacing: 0.16em;
}

.training-main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.training-main-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  border-radius: 999px;
  color: #37413c;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  touch-action: manipulation;
  transition: color 200ms ease, background-color 200ms ease;
}

.training-main-nav a:hover {
  color: #8f291f;
  background: #fff8ef;
}

.training-main-nav a.is-active,
.training-main-nav a[aria-current="location"] {
  color: #fff;
  background: #b83a2d;
}

.training-header-progress {
  min-width: 114px;
  color: #5e6863;
  font-size: 12px;
  line-height: 1.25;
}

.training-header-progress b {
  color: #18201d;
  font-size: 15px;
}

.training-mini-progress {
  width: 100%;
  height: 4px;
  display: block;
  overflow: hidden;
  margin-top: 7px;
  border-radius: 999px;
  background: #dcd3c5;
}

.training-mini-progress span {
  width: 0;
  height: 100%;
  display: block;
  border-radius: inherit;
  background: #b83a2d;
  transition: width 260ms cubic-bezier(0.22, 1, 0.36, 1);
}

.training-skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1100;
  padding: 12px 16px;
  border-radius: 8px;
  color: #fff;
  background: #1268a5;
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

.training-skip-link:focus {
  transform: translateY(0);
}

.training-site-header a:focus-visible,
.training-skip-link:focus-visible {
  outline: 3px solid #1268a5;
  outline-offset: 4px;
}

.training-page-content-anchor {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

body.training-header-enabled > .topbar {
  top: var(--training-header-height);
}

body.training-header-enabled nav:not(.training-main-nav) {
  top: calc(var(--training-header-height) + 8px);
}

body.training-header-enabled .toc {
  top: calc(var(--training-header-height) + 82px);
}

@media (max-width: 820px) {
  body.training-header-enabled {
    --training-header-height: 68px;
  }

  .training-header-inner {
    width: min(1180px, calc(100% - 32px));
    gap: 18px;
  }

  .training-main-nav {
    display: none;
  }

  .training-header-progress {
    margin-left: auto;
  }
}

@media (max-width: 560px) {
  .training-header-inner {
    width: min(1180px, calc(100% - 24px));
  }

  .training-brand-mark {
    width: 46px;
    height: 46px;
  }

  .training-brand b {
    font-size: 13px;
  }

  .training-brand small {
    font-size: 9px;
  }

  .training-header-progress {
    min-width: 88px;
  }
}

@media (max-width: 420px) {
  .training-header-progress {
    display: none;
  }

  .training-brand {
    max-width: 100%;
  }

  .training-brand b {
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .training-site-header *,
  .training-skip-link {
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .training-site-header,
  .training-skip-link {
    display: none !important;
  }

  body.training-header-enabled > .topbar,
  body.training-header-enabled nav:not(.training-main-nav),
  body.training-header-enabled .toc {
    top: 0;
  }
}