:root {
  color-scheme: dark;
  --bg: #050b13;
  --panel: #0a1420;
  --panel-strong: #101e2d;
  --text: #e9f3fb;
  --muted: #9bb0c2;
  --line: #20364a;
  --accent: #53d6ff;
  --accent-strong: #8b7cff;
  --accent-soft: rgba(83, 214, 255, 0.11);
  --code-bg: #111e2a;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 8% 0%, rgba(83, 214, 255, 0.14), transparent 32rem),
    radial-gradient(circle at 92% 8%, rgba(139, 124, 255, 0.12), transparent 28rem),
    linear-gradient(180deg, #07111d 0%, var(--bg) 100%);
  color: var(--text);
  line-height: 1.7;
}

a {
  color: var(--accent);
}

.layout {
  width: min(1280px, calc(100vw - 2rem));
  margin: 1rem auto;
  display: grid;
  grid-template-columns: minmax(250px, 320px) minmax(0, 1fr);
  gap: 1rem;
}

.sidebar,
.content {
  min-width: 0;
  background: rgba(10, 20, 32, 0.9);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.sidebar {
  position: sticky;
  top: 1rem;
  align-self: start;
  padding: 1.4rem 1.2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
}

.brand-mark {
  flex: 0 0 auto;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(83, 214, 255, 0.16);
}

.tagline,
.eyebrow,
.sidebar-links {
  color: var(--muted);
}

.tagline {
  margin: 0.65rem 0 1.2rem;
  font-size: 0.96rem;
}

.sidebar nav {
  max-height: calc(100vh - 15.5rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 0.35rem;
  scrollbar-color: var(--line) transparent;
}

.nav-group + .nav-group {
  margin-top: 1.1rem;
}

.nav-group h2 {
  margin: 0 0 0.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-group li + li {
  margin-top: 0.2rem;
}

.nav-group a {
  display: block;
  padding: 0.35rem 0.55rem;
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  overflow-wrap: anywhere;
}

.nav-group a:hover,
.nav-group a.active {
  background: var(--accent-soft);
  color: var(--accent);
}

.sidebar-links {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1.2rem;
  font-size: 0.95rem;
}

.content {
  padding: 2rem clamp(1.2rem, 3vw, 3rem);
}

.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-header a {
  color: var(--muted);
}

.page-header h1 {
  margin: 0.2rem 0 0.4rem;
  line-height: 1.2;
  font-size: clamp(2rem, 4vw, 3rem);
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.markdown-body > :first-child {
  margin-top: 0;
}

.markdown-body {
  min-width: 0;
  overflow-wrap: anywhere;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  line-height: 1.25;
  margin-top: 2rem;
}

.markdown-body code,
.markdown-body pre {
  font-family: "SFMono-Regular", ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
}

.markdown-body code {
  background: var(--code-bg);
  padding: 0.12rem 0.3rem;
  border-radius: 6px;
  white-space: break-spaces;
}

.markdown-body pre {
  overflow-x: auto;
  padding: 1rem;
  background: #040910;
  color: #e9f3fb;
  border: 1px solid var(--line);
  border-radius: 16px;
}

.markdown-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
  white-space: pre;
}

.markdown-body blockquote {
  margin: 1.2rem 0;
  padding: 0.2rem 1rem;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
}

.markdown-body img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.5rem auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
}

.markdown-body table {
  display: block;
  width: 100%;
  border-collapse: collapse;
  margin: 1.2rem 0;
  overflow-x: auto;
  border-radius: 12px;
}

.markdown-body th,
.markdown-body td {
  padding: 0.75rem;
  border: 1px solid var(--line);
  vertical-align: top;
}

.markdown-body th {
  background: var(--panel-strong);
  text-align: left;
}

@media (max-width: 960px) {
  .layout {
    width: min(100vw, calc(100vw - 1rem));
    grid-template-columns: minmax(0, 1fr);
  }

  .sidebar {
    position: static;
  }

  .sidebar nav {
    max-height: 16rem;
  }

  .content {
    padding: 1.4rem;
  }
}