:root {
  --bg: #f8fafc;
  --panel: #ffffff;
  --text: #182230;
  --muted: #667085;
  --line: #d9e0e8;
  --code-bg: #0b1220;
  --code-text: #d7e2f0;
  --green: #20d30a;
  --green-dark: #099913;
  --blue: #2563eb;
  --shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
}

.brand:hover {
  text-decoration: none;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.1;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 8px;
  color: #07130a;
  background: linear-gradient(135deg, var(--green), #85ff62);
  font-weight: 800;
  font-size: 13px;
}

.top-nav {
  display: flex;
  gap: 22px;
  font-size: 14px;
  font-weight: 600;
}

.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  max-width: 1380px;
  margin: 0 auto;
}

.sidebar {
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  padding: 30px 18px;
  border-right: 1px solid var(--line);
  overflow: auto;
}

.sidebar nav {
  display: grid;
  gap: 10px;
}

.sidebar a {
  display: block;
  padding: 7px 12px;
  border-radius: 8px;
  color: #344054;
  font-size: 14px;
}

.sidebar .nav-top {
  font-weight: 800;
}

.nav-group {
  padding: 4px 0;
}

.nav-group summary {
  cursor: pointer;
  list-style: none;
  padding: 7px 12px;
  border-radius: 8px;
  color: #182230;
  font-size: 14px;
  font-weight: 800;
}

.nav-group summary::-webkit-details-marker {
  display: none;
}

.nav-group summary::after {
  content: "▾";
  float: right;
  color: var(--muted);
  font-size: 11px;
}

.nav-group:not([open]) summary::after {
  content: "▸";
}

.nav-group summary:hover {
  color: var(--green-dark);
  background: #ebfcef;
}

.nav-group a {
  margin-left: 12px;
  padding: 6px 12px;
  color: var(--muted);
  font-size: 13px;
}

.sidebar a:hover {
  color: var(--green-dark);
  background: #ebfcef;
  text-decoration: none;
}

.content {
  min-width: 0;
  padding: 34px 44px 72px;
}

.hero {
  margin-bottom: 28px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, #ffffff 0%, #f2f8f4 100%);
  box-shadow: var(--shadow);
}

.hero img {
  display: block;
  width: 100%;
  max-height: 240px;
  object-fit: contain;
  margin: 0 auto 24px;
  border-radius: 8px;
  background: transparent;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: 42px;
}

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

h3 {
  margin: 22px 0 10px;
  font-size: 20px;
}

.lead {
  max-width: 860px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: #ffffff;
  font-weight: 700;
}

.button.primary {
  border-color: var(--green-dark);
  color: #062b09;
  background: var(--green);
}

.button:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.card {
  margin: 28px 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
}

.subsection {
  padding-top: 4px;
}

figure {
  margin: 22px 0 0;
}

figure img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
}

figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

code {
  padding: 2px 5px;
  border-radius: 5px;
  color: #0b6337;
  background: #ecfdf3;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}

pre {
  margin: 16px 0;
  padding: 18px;
  border-radius: 10px;
  overflow-x: auto;
  background: var(--code-bg);
}

pre code {
  padding: 0;
  color: var(--code-text);
  background: transparent;
  font-size: 13px;
  line-height: 1.55;
}

ul {
  padding-left: 22px;
}

li + li {
  margin-top: 6px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

th,
td {
  padding: 12px 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: #344054;
  background: #f3f6fa;
  font-weight: 800;
}

.callout {
  margin: 14px 0;
  padding: 14px 16px;
  border-left: 4px solid var(--green);
  border-radius: 8px;
  background: #f0fdf4;
}

.callout strong {
  display: block;
  margin-bottom: 4px;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 14px 18px;
  }

  .top-nav {
    gap: 14px;
    flex-wrap: wrap;
  }

  .layout {
    display: block;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 14px 18px;
  }

  .sidebar nav {
    display: flex;
    gap: 6px;
    overflow-x: auto;
  }

  .sidebar a {
    white-space: nowrap;
  }

  .content {
    padding: 24px 18px 48px;
  }

  .hero,
  .card {
    padding: 20px;
  }

  h1 {
    font-size: 32px;
  }
}