:root {
  --cf-ink: #102034;
  --cf-muted: #5b6c80;
  --cf-surface: rgba(255, 255, 255, 0.72);
  --cf-surface-strong: rgba(255, 255, 255, 0.9);
  --cf-border: rgba(24, 50, 75, 0.12);
  --cf-mint: #00a98f;
  --cf-mint-deep: #00796b;
  --cf-coral: #e85d75;
  --cf-violet: #7257e8;
  --cf-shadow: 0 24px 70px rgba(32, 52, 76, 0.14);
  --cf-radius-xl: 28px;
  --cf-radius-lg: 20px;
  --cf-radius-md: 14px;
  font-family: "Avenir Next", "Segoe UI Variable", "SF Pro Display", Inter, ui-sans-serif, system-ui, sans-serif;
}

[data-bs-theme="dark"] {
  --cf-ink: #f5fbff;
  --cf-muted: #a6b6c8;
  --cf-surface: rgba(18, 30, 48, 0.7);
  --cf-surface-strong: rgba(19, 34, 53, 0.9);
  --cf-border: rgba(205, 229, 255, 0.14);
  --cf-mint: #65e6ca;
  --cf-mint-deep: #9af8e4;
  --cf-coral: #ff8fa2;
  --cf-violet: #aa9bff;
  --cf-shadow: 0 28px 80px rgba(0, 0, 0, 0.3);
}

html {
  background:
    radial-gradient(circle at 3% 2%, rgba(0, 169, 143, 0.15), transparent 28rem),
    radial-gradient(circle at 98% 10%, rgba(232, 93, 117, 0.14), transparent 25rem),
    #f5f8fc;
}

html[data-bs-theme="dark"] {
  background:
    radial-gradient(circle at 3% 2%, rgba(0, 169, 143, 0.2), transparent 30rem),
    radial-gradient(circle at 98% 10%, rgba(114, 87, 232, 0.2), transparent 28rem),
    #0b1422;
}

body {
  min-height: 100vh;
  color: var(--cf-ink);
  background: transparent;
  font-family: inherit;
  letter-spacing: -0.008em;
}

header.bg-body {
  position: sticky;
  z-index: 10;
  top: 0;
  border-color: var(--cf-border) !important;
  background: color-mix(in srgb, var(--cf-surface-strong) 78%, transparent) !important;
  box-shadow: 0 8px 30px rgba(25, 45, 70, 0.06);
  backdrop-filter: blur(22px) saturate(145%);
  -webkit-backdrop-filter: blur(22px) saturate(145%);
}

.navbar-brand {
  color: var(--cf-ink) !important;
  font-weight: 760;
  letter-spacing: -0.04em;
}

.cf-github-link {
  display: inline-flex !important;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  margin-inline: 0.3rem 0.45rem;
  padding: 0.48rem !important;
  border: 1px solid var(--cf-border);
  border-radius: 999px;
  color: var(--cf-ink) !important;
  background: color-mix(in srgb, var(--cf-surface-strong) 72%, transparent);
  box-shadow: 0 8px 20px rgba(31, 52, 78, 0.08);
  text-decoration: none !important;
  transition: transform 160ms ease, color 160ms ease, background 160ms ease;
}

.cf-github-link svg {
  width: 1.12rem;
  height: 1.12rem;
  fill: currentColor;
}

.cf-github-link:hover,
.cf-github-link:focus-visible {
  color: var(--cf-mint-deep) !important;
  background: color-mix(in srgb, var(--cf-mint) 16%, var(--cf-surface-strong));
  transform: translateY(-1px);
}

main.container-xxl {
  max-width: 1500px;
  padding-top: 1.5rem;
}

.content {
  min-width: 0;
  padding: 0 clamp(1rem, 3vw, 3.4rem) 4rem;
}

body[data-search] > .search-results {
  width: 100%;
  max-width: 1500px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 3.4rem);
}

body[data-search] #search-results {
  padding-bottom: 4rem;
  color: var(--cf-ink);
}

body[data-search] #search-results > .search-list,
body[data-search] #search-results > .sr-items,
body[data-search] #search-results > nav {
  width: 100%;
  max-width: 1080px;
  margin-inline: auto;
}

body[data-search] #search-results > .search-list {
  margin: 0 auto;
  padding: 1rem 0 0.8rem;
  color: var(--cf-muted);
  font-size: 0.95rem;
}

body[data-search] #search-results > .sr-items {
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 1px solid var(--cf-border);
  border-radius: var(--cf-radius-xl);
  background: var(--cf-surface);
  box-shadow: var(--cf-shadow);
  backdrop-filter: blur(24px) saturate(130%);
  -webkit-backdrop-filter: blur(24px) saturate(130%);
}

body[data-search] #search-results .sr-item {
  margin: 0;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--cf-border);
}

body[data-search] #search-results .sr-item:first-child { padding-top: 0; }
body[data-search] #search-results .sr-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

body[data-search] #search-results .item-title {
  font-size: 1.2rem;
  font-weight: 720;
}

body[data-search] #search-results .item-href {
  overflow-wrap: anywhere;
  color: var(--cf-mint-deep);
  font-size: 0.8rem;
}

body[data-search] #search-results .item-brief {
  color: var(--cf-muted);
  font-size: 0.9rem;
}

body[data-search] #search-results > nav {
  display: flex;
  justify-content: center;
  margin-top: 1.8rem;
}

body[data-search] #search-results .pagination {
  display: flex;
  gap: 0.45rem;
  margin: 0;
}

body[data-search] #search-results .page-link {
  min-width: 2.55rem;
  border: 1px solid var(--cf-border);
  border-radius: 999px;
  color: var(--cf-ink);
  background: var(--cf-surface-strong);
  text-align: center;
  box-shadow: none;
}

body[data-search] #search-results .page-link:hover,
body[data-search] #search-results .page-link:focus-visible,
body[data-search] #search-results .page-link.active {
  border-color: color-mix(in srgb, var(--cf-mint) 55%, var(--cf-border));
  color: #fff;
  background: var(--cf-mint-deep);
}

body[data-search] #search-results .page-link.disabled {
  opacity: 0.42;
  pointer-events: none;
}

.breadcrumb-item-label {
  color: var(--cf-muted);
  font-weight: 620;
}

article {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 3.4rem);
  border: 1px solid var(--cf-border);
  border-radius: var(--cf-radius-xl);
  background: var(--cf-surface);
  box-shadow: var(--cf-shadow);
  backdrop-filter: blur(24px) saturate(130%);
  -webkit-backdrop-filter: blur(24px) saturate(130%);
}

article::before {
  position: absolute;
  width: 14rem;
  height: 14rem;
  top: -8rem;
  right: -5rem;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--cf-coral) 18%, transparent), transparent 68%);
  content: "";
  pointer-events: none;
}

article h1 {
  max-width: 48rem;
  margin-bottom: 1.8rem;
  color: var(--cf-ink);
  font-size: clamp(2.35rem, 5vw, 4rem);
  font-weight: 780;
  letter-spacing: -0.065em;
  line-height: 1.02;
}

article h2 {
  margin-top: 2.6rem;
  color: var(--cf-ink);
  font-weight: 730;
  letter-spacing: -0.045em;
}

article h3,
article h4 { color: var(--cf-ink); font-weight: 700; }

article a,
.toc a,
.navbar a {
  color: var(--cf-mint-deep);
  font-weight: 600;
  text-decoration-thickness: 0.09em;
  text-underline-offset: 0.18em;
}

article a:hover,
article a:focus-visible,
.toc a:hover,
.toc a:focus-visible {
  color: var(--cf-coral);
}

article code {
  padding: 0.18em 0.4em;
  border: 1px solid var(--cf-border);
  border-radius: 0.55em;
  color: var(--cf-violet);
  background: color-mix(in srgb, var(--cf-violet) 9%, var(--cf-surface-strong));
}

article pre {
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--cf-border);
  border-radius: var(--cf-radius-lg);
  background: color-mix(in srgb, #10233b 92%, var(--cf-violet));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 14px 35px rgba(27, 45, 72, 0.12);
}

article pre code {
  border: 0;
  color: #dffdf6;
  background: transparent;
}

[data-bs-theme="light"] article pre {
  color: #1c2940;
  background: linear-gradient(135deg, #edf4ff 0%, #f6f0ff 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), 0 14px 35px rgba(70, 85, 120, 0.12);
}

[data-bs-theme="light"] article pre code {
  color: #243653;
}

article blockquote {
  margin: 1.7rem 0;
  padding: 0.9rem 1.3rem 0.68rem;
  border-left: 4px solid var(--cf-coral);
  border-radius: 0 var(--cf-radius-md) var(--cf-radius-md) 0;
  color: var(--cf-muted);
  background: color-mix(in srgb, var(--cf-coral) 7%, var(--cf-surface));
}

article blockquote > :last-child {
  margin-bottom: 0;
}

.sidetoc,
.sidefilter,
.toc {
  border-color: var(--cf-border) !important;
}

.sidefilter,
.sidetoc {
  border: 1px solid var(--cf-border);
  border-radius: var(--cf-radius-lg);
  background: var(--cf-surface);
  box-shadow: 0 14px 44px rgba(31, 52, 78, 0.09);
  backdrop-filter: blur(22px) saturate(135%);
  -webkit-backdrop-filter: blur(22px) saturate(135%);
}

.sidefilter { margin-bottom: 0.7rem; padding: 0.55rem; }
.sidetoc { padding: 0.7rem; }

.toc-filter input,
#search-query,
.form-control {
  border: 1px solid var(--cf-border) !important;
  border-radius: 999px !important;
  color: var(--cf-ink) !important;
  background: color-mix(in srgb, var(--cf-surface-strong) 72%, transparent) !important;
  box-shadow: none !important;
}

.toc ul.nav > li > a,
.toc ul.nav > li > span {
  border-radius: var(--cf-radius-md);
  font-weight: 720;
}

.toc ul.nav ul.nav a { border-radius: 10px; font-weight: 560; }
.toc ul.nav a:hover,
.toc ul.nav a:focus-visible { background: color-mix(in srgb, var(--cf-mint) 12%, transparent); }

.affix {
  padding: 0.3rem 0.65rem 0.5rem 0.85rem;
  border-left: 2px solid color-mix(in srgb, var(--cf-mint) 58%, var(--cf-border));
  border-radius: 0;
  background: color-mix(in srgb, var(--cf-surface) 28%, transparent);
  box-shadow: none;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.affix h5 {
  margin: 0;
  padding: 0.2rem 0 0.35rem;
  color: var(--cf-muted);
  font-weight: 720;
  letter-spacing: 0.14em;
}

.affix ul {
  margin: 0;
}

.affix ul li {
  margin: 0.18rem 0;
}

.affix ul li a {
  display: block;
  padding: 0.14rem 0.35rem;
  border-radius: 0.55rem;
}

.affix ul li a:hover,
.affix ul li a:focus-visible {
  background: color-mix(in srgb, var(--cf-coral) 12%, transparent);
}

footer.border-top {
  border-color: var(--cf-border) !important;
  background: color-mix(in srgb, var(--cf-surface) 68%, transparent) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

@media (max-width: 767.98px) {
  article { padding: 1.35rem; border-radius: var(--cf-radius-lg); }
  .content { padding-inline: 0.5rem; }
  .sidetoc { border-radius: var(--cf-radius-md); }
}

@media (min-width: 768px) {
  #navbar > .navbar-nav > .nav-item > .dropdown-menu {
    min-width: 15rem;
    width: max-content;
    max-width: min(34rem, calc(100vw - 2rem));
  }

  #navbar > .navbar-nav > .nav-item > .dropdown-menu .nav-link {
    white-space: nowrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}