:root {
  --mhi-bg: #050810;
  --mhi-panel: rgba(12, 22, 38, 0.92);
  --mhi-line: rgba(154, 211, 255, 0.2);
  --mhi-line-strong: rgba(95, 224, 255, 0.48);
  --mhi-text: #eef7ff;
  --mhi-muted: #9db0c4;
  --mhi-cyan: #5de6ff;
  --mhi-violet: #9b72ff;
}

.mhi-skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 10px 14px;
  border: 1px solid var(--mhi-line-strong);
  border-radius: 6px;
  color: #04101a;
  background: var(--mhi-cyan);
  font-weight: 800;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

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

.mhi-shell-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--mhi-line);
  background: rgba(5, 8, 16, 0.84);
  backdrop-filter: blur(18px);
}

.mhi-shell-container {
  width: min(100% - 32px, 1180px);
  margin: 0 auto;
}

.mhi-shell-nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.mhi-shell-brand,
.mhi-shell-links,
.mhi-shell-menu-button {
  text-decoration: none;
}

.mhi-shell-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--mhi-text);
  font-weight: 800;
  white-space: nowrap;
}

.mhi-shell-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(93, 230, 255, 0.42);
  border-radius: 6px;
  color: var(--mhi-cyan);
  background: linear-gradient(135deg, rgba(93, 230, 255, 0.22), rgba(155, 114, 255, 0.18));
}

.mhi-shell-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.mhi-shell-links a,
.mhi-shell-menu-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  padding: 0 11px;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--mhi-muted);
  background: transparent;
  font: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease;
}

.mhi-shell-links a:hover,
.mhi-shell-menu-button:hover {
  border-color: var(--mhi-line);
  color: var(--mhi-text);
  background: rgba(255, 255, 255, 0.05);
}

.mhi-shell-menu-button {
  display: none;
  color: var(--mhi-text);
  font-size: 1.35rem;
}

.mhi-data-status,
.mhi-toc {
  width: min(100% - 32px, 1120px);
  margin: 22px auto 0;
  padding: 14px 16px;
  border: 1px solid var(--mhi-line);
  border-radius: 8px;
  color: var(--mhi-muted);
  background: linear-gradient(135deg, rgba(93, 230, 255, 0.08), rgba(155, 114, 255, 0.05)), var(--mhi-panel);
}

.mhi-data-status strong,
.mhi-toc strong {
  color: var(--mhi-text);
}

.mhi-data-status a,
.mhi-toc a {
  color: var(--mhi-cyan);
}

.mhi-data-status p {
  margin: 4px 0 0;
  color: var(--mhi-muted);
  font-size: 0.92rem;
}

.mhi-toc {
  width: auto;
  margin: 0 0 22px;
}

.mhi-toc ol {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 7px 18px;
  margin: 10px 0 0;
  padding-left: 20px;
}

.mhi-toc a {
  text-decoration: none;
}

.mhi-shell-footer {
  margin-top: 32px;
  padding: 28px 0 38px;
  border-top: 1px solid var(--mhi-line);
  color: var(--mhi-muted);
}

.mhi-shell-footer-row,
.mhi-shell-footer-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 16px;
}

.mhi-shell-footer-row {
  justify-content: space-between;
}

.mhi-shell-footer-links a {
  color: var(--mhi-muted);
  text-decoration: none;
}

.mhi-shell-footer-links a:hover {
  color: var(--mhi-cyan);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[role="button"]:focus-visible {
  outline: 3px solid var(--mhi-cyan) !important;
  outline-offset: 3px !important;
}

html {
  scroll-padding-top: 90px;
}

@media (max-width: 760px) {
  .mhi-shell-nav {
    min-height: 64px;
  }

  .mhi-shell-menu-button {
    display: inline-flex;
  }

  .mhi-shell-links {
    position: absolute;
    top: 64px;
    right: 16px;
    left: 16px;
    display: none;
    padding: 10px;
    border: 1px solid var(--mhi-line);
    border-radius: 8px;
    background: rgba(5, 8, 16, 0.98);
    box-shadow: 0 20px 52px rgba(0, 0, 0, 0.42);
  }

  .mhi-shell-links[data-open="true"] {
    display: grid;
  }

  .mhi-shell-links a {
    min-height: 46px;
  }

  .mhi-data-status {
    width: min(100% - 32px, 980px);
  }

  .mhi-toc ol {
    grid-template-columns: 1fr;
  }
}

@media print {
  .mhi-skip-link,
  .mhi-shell-header,
  .mhi-shell-footer,
  .mhi-data-status,
  .mhi-toc {
    display: none !important;
  }
}