@font-face {
  font-family: "IBM Plex Sans";
  src: url("../assets/fonts/ibm-plex-sans-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 700;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("../assets/fonts/ibm-plex-mono-regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("../assets/fonts/ibm-plex-mono-medium.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

:root {
  --md-text-font: "IBM Plex Sans";
  --md-code-font: "IBM Plex Mono";
  --br-accent: #2f63d8;
  --br-retrieval: #d97706;
  --br-evidence: #16845b;
  --br-generation: #7357b5;
  --br-ink: #172033;
  --br-muted: #5b6475;
  --br-rule: #d9dee8;
  --br-surface: #f7f8fb;
  --br-radius: 0.55rem;
}

[data-md-color-scheme="default"] {
  --md-primary-fg-color: #172033;
  --md-primary-bg-color: #f8fafc;
  --md-accent-fg-color: var(--br-accent);
  --md-default-bg-color: #fcfcfd;
  --md-default-fg-color: var(--br-ink);
  --md-typeset-a-color: #2458c5;
}

[data-md-color-scheme="slate"] {
  --br-accent: #86a9ff;
  --br-retrieval: #f1ad55;
  --br-evidence: #62c99d;
  --br-generation: #b6a4ef;
  --br-ink: #edf1f7;
  --br-muted: #aeb7c7;
  --br-rule: #343c4d;
  --br-surface: #181d27;
  --md-primary-fg-color: #11151d;
  --md-accent-fg-color: var(--br-accent);
  --md-typeset-a-color: #9ab7ff;
}

html {
  font-size: 100%;
}

body {
  letter-spacing: -0.005em;
}

.md-header,
.md-tabs {
  box-shadow: none;
}

.md-header {
  border-bottom: 1px solid color-mix(in srgb, var(--br-rule) 75%, transparent);
}

.md-tabs {
  border-bottom: 1px solid var(--br-rule);
}

.md-header__title,
.md-tabs__link,
.md-nav__title {
  font-weight: 600;
}

.md-header__title,
.md-tabs__link {
  font-size: 0.78rem;
}

.md-nav {
  font-size: 0.82rem;
  line-height: 1.45;
}

.md-main__inner {
  margin-top: 1.25rem;
}

.md-content__inner {
  padding-bottom: 5rem;
}

.md-typeset {
  color: var(--br-ink);
  font-size: 1.08rem;
  line-height: 1.7;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  color: var(--br-ink);
  font-weight: 600;
  letter-spacing: -0.035em;
}

.md-typeset h1 {
  max-width: 18ch;
  font-size: clamp(2.15rem, 5vw, 3.7rem);
  line-height: 1.03;
}

.md-typeset h2 {
  margin-top: 2.8rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--br-rule);
  font-size: clamp(1.45rem, 3vw, 2rem);
}

.md-typeset h3 {
  font-size: 1.18rem;
}

.md-typeset p,
.md-typeset li {
  max-width: 72ch;
}

.md-typeset code {
  border-radius: 0.25rem;
}

.md-typeset pre > code {
  border-radius: var(--br-radius);
}

.md-typeset .admonition,
.md-typeset details {
  border-radius: var(--br-radius);
  box-shadow: none;
}

.md-typeset .md-button {
  border-radius: 0.35rem;
  font-weight: 600;
  transition: transform 120ms ease, background-color 120ms ease, color 120ms ease;
}

.md-typeset .md-button:active {
  transform: translateY(1px);
}

.br-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  min-height: min(70vh, 44rem);
  padding: clamp(2rem, 6vw, 5.5rem) 0;
}

.br-hero h1 {
  max-width: 12ch;
  margin: 0;
}

.br-hero__lead {
  max-width: 38rem;
  margin: 1.4rem 0 1.8rem;
  color: var(--br-muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.55;
}

.br-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.br-hero__map {
  padding: 1.15rem;
  border: 1px solid var(--br-rule);
  border-radius: var(--br-radius);
  background: var(--br-surface);
}

.br-hero__map code {
  display: block;
  padding: 0.75rem 0.85rem;
  border-left: 3px solid var(--br-retrieval);
  background: transparent;
  color: var(--br-ink);
  font-size: 0.84rem;
}

.br-hero__map code + code {
  margin-top: 0.45rem;
}

.br-proof {
  margin: 1rem 0 3.5rem;
  padding: 1.4rem 0;
  border-top: 1px solid var(--br-rule);
  border-bottom: 1px solid var(--br-rule);
  color: var(--br-muted);
  font-family: var(--md-code-font-family);
  font-size: 0.82rem;
}

.br-path {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 1.8rem 0 3rem;
  overflow: hidden;
  border: 1px solid var(--br-rule);
  border-radius: var(--br-radius);
  background: var(--br-rule);
}

.br-path > div {
  min-height: 10rem;
  padding: 1.35rem;
  background: var(--md-default-bg-color);
}

.br-path h3 {
  margin-top: 0;
}

.br-path p {
  margin-bottom: 0;
  color: var(--br-muted);
}

.br-principles {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: clamp(1.5rem, 5vw, 4rem);
  margin: 2rem 0 4rem;
}

.br-principles ul {
  margin: 0;
}

.mermaid {
  margin: 1.8rem 0;
  overflow: auto;
  padding: 1rem;
  border: 1px solid var(--br-rule);
  border-radius: var(--br-radius);
  background: var(--br-surface);
  text-align: center;
}

.br-lesson-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin: -0.5rem 0 2rem;
  color: var(--br-muted);
  font-family: var(--md-code-font-family);
  font-size: 0.78rem;
}

@media (max-width: 60rem) {
  .br-hero,
  .br-principles {
    grid-template-columns: 1fr;
  }

  .br-hero {
    min-height: auto;
  }
}

@media (max-width: 44rem) {
  .br-path {
    grid-template-columns: 1fr;
  }

  .br-hero {
    padding-top: 1.25rem;
  }
}

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