:root {
  --qitos-paper: #fcfcfb;
  --qitos-ink: #1f2a37;
  --qitos-ink-soft: #4b5563;
  --qitos-line: #d7dee3;
  --qitos-line-strong: #c9d2d9;
  --qitos-accent: #6f96a8;
  --qitos-accent-soft: #edf3f6;
  --qitos-shadow: 0 8px 22px rgba(18, 36, 52, 0.06);
}

[data-md-color-scheme="default"] {
  --md-default-bg-color: var(--qitos-paper);
  --md-default-fg-color: var(--qitos-ink);
  --md-default-fg-color--light: #334155;
  --md-default-fg-color--lighter: #64748b;
  --md-typeset-a-color: #2a5f7a;
  --md-primary-fg-color: #f9fafb;
  --md-primary-bg-color: #1f2a37;
  --md-accent-fg-color: #2a5f7a;
}

body {
  background:
    radial-gradient(900px 260px at 0% -10%, rgba(136, 163, 176, 0.08), transparent 60%),
    radial-gradient(900px 260px at 100% -10%, rgba(136, 163, 176, 0.08), transparent 60%),
    var(--qitos-paper);
}

.md-header {
  background: rgba(252, 252, 251, 0.92);
  border-bottom: 1px solid var(--qitos-line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 12px rgba(28, 44, 57, 0.06);
}

.qitos-scrolled .md-header {
  background: rgba(252, 252, 251, 0.78);
  box-shadow: 0 4px 16px rgba(28, 44, 57, 0.1);
}

.md-tabs {
  background: rgba(252, 252, 251, 0.88);
  border-top: 1px solid #eef2f5;
  border-bottom: 1px solid var(--qitos-line);
}

.md-tabs__link,
.md-nav__link {
  font-weight: 500;
}

.md-tabs__link--active,
.md-nav__link--active {
  color: #1e4d67;
  font-weight: 700;
}

.md-header__button.md-logo img {
  width: 1.26rem;
  height: 1.26rem;
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--qitos-line);
}

.md-main__inner {
  margin-top: 1rem;
  padding-left: 0.9rem;
  padding-right: 0.9rem;
}

.md-content__inner {
  background: #ffffff;
  border: 1px solid var(--qitos-line);
  border-radius: 14px;
  box-shadow: var(--qitos-shadow);
  padding: 1.8rem 2.2rem 2.3rem !important;
}

.md-sidebar__inner {
  background: #ffffff;
  border: 1px solid var(--qitos-line);
  border-radius: 12px;
  box-shadow: var(--qitos-shadow);
  padding-top: 0.3rem;
  padding-bottom: 0.3rem;
}

.md-typeset h1 {
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
}

.md-typeset h2 {
  border-bottom: 1px solid #e6ecef;
  padding-bottom: 0.22rem;
}

.md-typeset p,
.md-typeset li {
  color: var(--qitos-ink-soft);
}

.md-typeset .qitos-hero {
  border: 1px solid var(--qitos-line);
  border-radius: 14px;
  box-shadow: var(--qitos-shadow);
  padding: 1.15rem 1.2rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(250, 252, 253, 0.96)),
    radial-gradient(640px 180px at 0% 0%, rgba(120, 150, 165, 0.1), transparent 62%);
}

.md-typeset .qitos-section {
  border: 1px solid var(--qitos-line);
  border-radius: 12px;
  box-shadow: 0 5px 16px rgba(18, 36, 52, 0.05);
  background: #ffffff;
  padding: 1rem;
  margin: 1rem 0 1.2rem;
}

.md-typeset .qitos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 12px;
}

.md-typeset .qitos-card {
  border-radius: 10px;
  border: 1px solid var(--qitos-line);
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(18, 36, 52, 0.04);
  padding: 0.85rem 0.9rem;
}

.md-typeset .qitos-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.62rem;
  margin-top: 0.78rem;
}

.md-typeset .qitos-btn {
  display: inline-block;
  border-radius: 999px;
  border: 1px solid var(--qitos-line-strong);
  background: #ffffff;
  color: #2d556b !important;
  text-decoration: none !important;
  font-weight: 600;
  padding: 0.44rem 0.88rem;
  transition: background 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
}

.md-typeset .qitos-btn:hover {
  background: #f7fafb;
  border-color: #b8c5cd;
  box-shadow: 0 3px 10px rgba(18, 36, 52, 0.08);
}

.md-typeset .qitos-btn-glow {
  background: #2f5f77;
  color: #ffffff !important;
  border-color: #2f5f77;
  box-shadow: 0 4px 12px rgba(47, 95, 119, 0.24);
}

.md-typeset .qitos-btn-glow:hover {
  background: #284f63;
  border-color: #284f63;
}

.md-typeset code {
  background: #f5f7f8;
  border: 1px solid #e3e9ed;
  border-radius: 6px;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.md-typeset pre {
  overflow-x: auto;
}

.md-typeset pre code {
  white-space: pre-wrap !important;
  overflow-wrap: anywhere;
  word-break: break-word;
  border-radius: 8px;
}

.md-typeset .mermaid {
  max-width: 100%;
  overflow-x: auto;
  text-align: center;
  margin: 0.65rem 0;
}

/* API reference readability */
.md-typeset details {
  border: 1px solid #dfe6ea;
  border-radius: 8px;
  background: #fcfdfd;
}

.md-typeset details summary {
  font-weight: 600;
}

.md-typeset a[id^="class-"],
.md-typeset a[id^="function-"],
.md-typeset a[id^="group-"] {
  position: relative;
  top: -70px;
}

@media screen and (max-width: 76.1875em) {
  .md-main__inner {
    padding-left: 0.45rem;
    padding-right: 0.45rem;
  }
  .md-content__inner {
    padding: 1.15rem 1.05rem 1.65rem !important;
    border-radius: 12px;
  }
  .md-sidebar__inner {
    border-radius: 10px;
  }
}