:root {
  color-scheme: light;
  --paper: #f5f7fa;
  --surface: #ffffff;
  --ink: #19283b;
  --muted: #526276;
  --blue: #315d91;
  --blue-dark: #244a77;
  --teal: #2d8177;
  --rule: #d6dee8;
  --code: #162334;
  --code-ink: #eff5fb;
  --focus: #a74d13;
  --content-width: 70rem;
  font-family: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
}

a {
  color: var(--blue-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--teal);
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 2px;
}

button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: absolute;
  z-index: 3;
  top: 0.5rem;
  left: 0.5rem;
  padding: 0.65rem 0.9rem;
  color: var(--surface);
  background: var(--ink);
  transform: translateY(-160%);
}

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

.site-header {
  border-bottom: 1px solid var(--rule);
  background: var(--surface);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - 3rem, var(--content-width));
  min-height: 4.5rem;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 1.8rem;
  height: 1.8rem;
  place-items: center;
  border: 1.5px solid var(--teal);
  border-radius: 0.45rem;
}

.brand-mark svg {
  width: 1.15rem;
  height: 1.15rem;
  fill: none;
  stroke: var(--teal);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.header-note {
  color: var(--muted);
  font-size: 0.9rem;
}

.page-width {
  width: min(100% - 3rem, var(--content-width));
  margin: 0 auto;
}

.docs-layout {
  display: grid;
  grid-template-columns: 13.5rem minmax(0, 1fr);
  align-items: start;
  gap: clamp(2rem, 5vw, 4.5rem);
  padding-top: 2.5rem;
  padding-bottom: 5rem;
}

.sidebar {
  position: sticky;
  top: 1.5rem;
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
}

.sidebar-title {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
}

.topic-nav {
  display: grid;
  gap: 0.15rem;
  border-left: 1px solid var(--rule);
}

.topic-nav a {
  display: block;
  padding: 0.38rem 0.75rem;
  border-left: 2px solid transparent;
  margin-left: -1px;
  color: var(--muted);
  font-size: 0.92rem;
  text-decoration: none;
}

.topic-nav a:hover {
  color: var(--blue-dark);
}

.topic-nav a[aria-current="page"] {
  border-left-color: var(--teal);
  color: var(--ink);
  font-weight: 650;
}

.article {
  min-width: 0;
  max-width: 49rem;
}

.article-header {
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 1.8rem;
}

.article h1,
.home h1 {
  margin: 0;
  font-size: clamp(2.15rem, 4.5vw, 3.35rem);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.article-header p {
  max-width: 42rem;
  margin: 0.85rem 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.article h2 {
  margin: 2.5rem 0 0.7rem;
  font-size: 1.55rem;
  letter-spacing: -0.025em;
  line-height: 1.25;
  scroll-margin-top: 1rem;
}

.article h3 {
  margin: 1.7rem 0 0.5rem;
  font-size: 1.15rem;
  line-height: 1.35;
  scroll-margin-top: 1rem;
}

.article p,
.article ul,
.article ol {
  max-width: 76ch;
}

.article li + li {
  margin-top: 0.35rem;
}

.article :target {
  scroll-margin-top: 1rem;
}

.article code,
.flow code {
  padding: 0.13rem 0.3rem;
  border-radius: 0.2rem;
  background: #e8edf3;
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.article pre {
  overflow-x: auto;
  padding: 1rem 1.15rem;
  border: 1px solid #293d54;
  border-radius: 0.45rem;
  background: var(--code);
  color: var(--code-ink);
  font-size: 0.91rem;
  line-height: 1.6;
  tab-size: 2;
}

.article pre code {
  padding: 0;
  background: transparent;
  color: inherit;
  font-size: inherit;
  overflow-wrap: normal;
}

.article table {
  display: block;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  margin: 1.2rem 0;
  font-size: 0.94rem;
}

.article th,
.article td {
  min-width: 9rem;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

.article th {
  color: var(--ink);
  font-weight: 650;
}

.article td {
  color: var(--muted);
}

.article blockquote,
.callout {
  padding: 0.8rem 1rem;
  border-left: 3px solid var(--teal);
  margin: 1.4rem 0;
  background: #eaf3f2;
}

.article blockquote p,
.callout p {
  margin: 0;
}

.toc {
  padding: 1rem 1.1rem;
  border: 1px solid var(--rule);
  border-radius: 0.4rem;
  margin: 1.6rem 0 2rem;
  background: var(--surface);
}

.toc p {
  margin: 0;
  font-weight: 650;
}

.toc ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem 1.5rem;
  margin: 0.5rem 0 0;
  padding-left: 1.15rem;
}

.toc li + li {
  margin-top: 0;
}

.site-footer {
  padding: 1.3rem 0 2rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.88rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}

.home {
  padding: clamp(3rem, 7vw, 6.5rem) 0 5rem;
}

.home-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(17rem, 0.85fr);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 6rem);
  padding-bottom: 4rem;
}

.home-copy {
  max-width: 38rem;
}

.home-copy p {
  max-width: 36rem;
  margin: 1.25rem 0 1.65rem;
  color: var(--muted);
  font-size: 1.12rem;
}

.home-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button-link {
  display: inline-flex;
  min-height: 2.8rem;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1rem;
  border: 1px solid var(--blue-dark);
  border-radius: 0.32rem;
  background: var(--blue-dark);
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
}

.button-link:hover {
  border-color: var(--teal);
  background: var(--teal);
  color: #ffffff;
}

.button-link.secondary {
  border-color: var(--rule);
  background: var(--surface);
  color: var(--ink);
}

.flow {
  display: grid;
  gap: 0.7rem;
  max-width: 24rem;
  padding: 1.3rem;
  border: 1px solid var(--rule);
  border-radius: 0.45rem;
  background: var(--surface);
}

.flow-step {
  display: grid;
  grid-template-columns: 2.3rem 1fr;
  align-items: center;
  gap: 0.75rem;
  min-height: 3.5rem;
}

.flow-symbol {
  display: grid;
  width: 2.3rem;
  height: 2.3rem;
  place-items: center;
  border: 1px solid #bdd7d3;
  border-radius: 0.4rem;
  background: #edf6f4;
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 700;
}

.flow-step strong {
  display: block;
  font-size: 0.95rem;
}

.flow-step span:last-child {
  color: var(--muted);
  font-size: 0.84rem;
}

.flow-connector {
  width: 1px;
  height: 0.7rem;
  margin: -0.25rem 0 -0.25rem 1.12rem;
  background: var(--teal);
}

.home-section {
  padding: 2.4rem 0;
  border-top: 1px solid var(--rule);
}

.home-section h2 {
  margin: 0 0 0.45rem;
  font-size: 1.55rem;
  letter-spacing: -0.025em;
}

.home-section > p {
  max-width: 48rem;
  margin: 0 0 1.4rem;
  color: var(--muted);
}

.guide-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--rule);
}

.guide-link {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.2rem 1rem;
  padding: 1rem 0.8rem 1rem 0;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
  text-decoration: none;
}

.guide-link:nth-child(odd) {
  margin-right: 1.5rem;
}

.guide-link strong {
  color: var(--blue-dark);
}

.guide-link span {
  grid-column: 1;
  color: var(--muted);
  font-size: 0.92rem;
}

.guide-link .link-mark {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  color: var(--teal);
}

.guide-link:hover strong {
  color: var(--teal);
  text-decoration: underline;
}

.home .site-footer {
  margin-top: 2rem;
}

@media (max-width: 760px) {
  .header-inner,
  .page-width {
    width: min(100% - 2rem, var(--content-width));
  }

  .docs-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.7rem;
    padding-top: 1.5rem;
  }

  .sidebar {
    position: static;
    max-height: none;
    overflow: visible;
  }

  .sidebar-title {
    margin-bottom: 0.45rem;
  }

  .topic-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.2rem;
    border: 0;
  }

  .topic-nav a {
    min-height: 2.5rem;
    padding: 0.45rem 0.65rem;
    border: 1px solid var(--rule);
    border-radius: 0.25rem;
    margin: 0;
    background: var(--surface);
    font-size: 0.86rem;
  }

  .topic-nav a[aria-current="page"] {
    border-color: var(--teal);
    background: #edf6f4;
  }

  .article-header {
    padding-bottom: 1.1rem;
    margin-bottom: 1.2rem;
  }

  .home-intro {
    grid-template-columns: minmax(0, 1fr);
  }

  .flow {
    max-width: none;
  }
}

@media (max-width: 480px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 0.15rem;
    padding: 0.7rem 0;
  }

  .header-note {
    padding-left: 2.5rem;
    font-size: 0.82rem;
  }

  .guide-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .guide-link:nth-child(odd) {
    margin-right: 0;
  }

  .toc ul {
    grid-template-columns: minmax(0, 1fr);
  }

  .article h1,
  .home h1 {
    font-size: 2.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}