@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&family=Source+Serif+4:ital,wght@0,400;0,500;1,400&family=Kalam:wght@400;700&display=swap');

:root {
  color-scheme: dark;
  --bg: #141413;
  --surface: #1c1c1a;
  --surface-alt: #212120;
  --ink: #faf9f5;
  --muted: #87867f;
  --line: rgba(250, 249, 245, 0.1);
  --accent: #d97757;
  --accent-soft: rgba(217, 119, 87, 0.14);
  --code-bg: #0f0f0e;
  --code-ink: #e8e6de;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.layout {
  display: grid;
  grid-template-columns: 272px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
  padding: 32px 24px;
  background: var(--bg);
  border-right: 1px solid var(--line);
  color: var(--ink);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  text-decoration: none;
}

.brand img {
  flex: none;
  border-radius: 8px;
}

.brand-text {
  display: block;
}

.brand strong {
  display: block;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.brand-text span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: grid;
  gap: 2px;
}

.nav-label {
  margin: 18px 0 4px;
  padding: 0 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.6;
}

.nav-label:first-child {
  margin-top: 0;
}

.nav a {
  display: block;
  padding: 9px 12px;
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.12s ease, color 0.12s ease;
}

.nav a[aria-current="page"] {
  background: rgba(250, 249, 245, 0.08);
  color: var(--ink);
}

.nav a:hover {
  background: rgba(250, 249, 245, 0.05);
  color: var(--ink);
}

.content {
  padding: 56px clamp(24px, 5vw, 88px) 80px;
  max-width: 1200px;
}

.hero {
  max-width: 980px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: -0.01em;
  font-weight: 400;
  color: var(--ink);
  font-family: var(--serif);
}

h1 {
  margin: 0;
  max-width: 900px;
  font-size: 52px;
}

h2 {
  margin: 50px 0 16px;
  font-size: 28px;
}

h3 {
  margin: 0 0 10px;
  font-size: 19px;
  font-family: Inter, sans-serif;
  font-weight: 600;
}

p {
  max-width: 860px;
  color: var(--ink);
}

.lead {
  margin-top: 18px;
  color: var(--muted);
  font-size: 19px;
  font-weight: 400;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin: 28px 0;
  max-width: 1150px;
}

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}

.card:hover {
  border-color: rgba(250, 249, 245, 0.22);
  background: var(--surface-alt);
  transform: translateY(-2px);
}

.card h3 {
  margin-top: 14px;
}

.card p {
  color: var(--muted);
  font-size: 14.5px;
}

.card a {
  display: inline-block;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.callout {
  max-width: 900px;
  margin: 24px 0;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--surface);
  border-radius: 0 14px 14px 0;
  color: var(--muted);
}

.callout strong {
  color: var(--ink);
}

.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 4px;
  margin: 24px 0 28px;
  max-width: 1150px;
}

.flow-step {
  flex: 1 1 160px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.flow-step .step-no {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.flow-step strong {
  display: block;
  font-size: 14.5px;
  margin-bottom: 4px;
}

.flow-step code {
  display: inline-block;
  margin-top: 4px;
  font-size: 12px;
}

.flow-step p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.flow-arrow {
  flex: 0 0 auto;
  align-self: center;
  color: var(--muted);
  font-size: 18px;
  padding: 0 2px;
}

@media (max-width: 720px) {
  .flow {
    flex-direction: column;
  }
  .flow-arrow {
    transform: rotate(90deg);
    align-self: flex-start;
    padding: 2px 0 2px 16px;
  }
}

.hub-diagram {
  margin: 24px 0 28px;
  max-width: 1150px;
}

.hub-node {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
}

.hub-stem {
  width: 1px;
  height: 20px;
  margin-left: 24px;
  background: var(--line);
}

.spoke-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.spoke-card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.spoke-card strong {
  display: block;
  font-size: 14px;
  margin-bottom: 4px;
}

.spoke-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.spoke-card code {
  display: inline-block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--accent);
  background: transparent;
  padding: 0;
}

.sketch-diagram {
  margin: 20px 0 28px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  max-width: 1150px;
  overflow-x: auto;
}

.sketch-diagram svg {
  display: block;
  width: 100%;
  height: auto;
}

.sketch-diagram figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12.5px;
}

.sketch-rect {
  fill: var(--surface-alt);
  stroke: var(--ink);
  stroke-width: 2;
}

.sketch-rect.is-root {
  stroke: var(--accent);
  fill: var(--accent-soft);
}

.sketch-rect.is-file {
  stroke: var(--muted);
}

.sketch-line {
  fill: none;
  stroke: var(--muted);
  stroke-width: 1.75;
}

.sketch-text-title {
  font-family: "Kalam", cursive;
  font-weight: 700;
  fill: var(--ink);
}

.sketch-text-sub {
  font-family: "Kalam", cursive;
  font-weight: 400;
  fill: var(--muted);
}

table {
  width: min(100%, 1050px);
  border-collapse: collapse;
  margin: 18px 0 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

th,
td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 14.5px;
}

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

th {
  background: var(--surface-alt);
  color: var(--ink);
  font-size: 12.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

tr:last-child td {
  border-bottom: none;
}

code {
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--surface-alt);
  border: 1px solid var(--line);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.88em;
}

pre {
  max-width: 1050px;
  overflow-x: auto;
  padding: 20px 22px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--code-bg);
  color: var(--code-ink);
}

pre code {
  padding: 0;
  border: none;
  background: transparent;
  color: inherit;
}

.footer {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 860px) {
  .layout {
    display: block;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .nav {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }

  .content {
    padding: 36px 20px 56px;
  }

  h1 {
    font-size: 36px;
  }
}