:root {
  --bg: #f7f9fc;
  --panel: #ffffff;
  --text: #172033;
  --muted: #637083;
  --line: #dce3ee;
  --brand: #005c78;
  --brand-strong: #003f5c;
  --accent: #f3b51b;
  --code-bg: #101828;
  --code-text: #f8fafc;
  --shadow: 0 16px 40px rgba(18, 34, 64, .08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

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

a:hover {
  color: var(--brand-strong);
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow-y: auto;
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 24px 18px;
}

.brand {
  display: grid;
  gap: 2px;
  padding: 0 6px 16px;
  border-bottom: 1px solid var(--line);
}

.brand-title {
  color: var(--brand-strong);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 13px;
}

.search-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.search-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font: inherit;
  padding: 10px 12px;
  outline: none;
}

.search-input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(0, 92, 120, .14);
}

.search-results {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.search-results a {
  display: block;
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
  padding: 8px;
  text-decoration: none;
}

.search-results a:hover {
  background: #edf6f8;
}

.nav {
  display: grid;
  gap: 4px;
}

.nav a {
  display: block;
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.35;
  padding: 10px 12px;
  text-decoration: none;
}

.nav a:hover {
  background: #edf6f8;
}

.nav a.is-active {
  background: var(--brand);
  color: #fff;
  font-weight: 700;
}

.support-box {
  margin-top: auto;
  border: 1px solid rgba(243, 181, 27, .5);
  border-radius: 8px;
  background: #fff9e6;
  padding: 12px;
}

.support-box span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.support-box a {
  display: inline-block;
  margin-top: 3px;
  color: var(--brand-strong);
  font-weight: 800;
  text-decoration: none;
}

.page {
  min-width: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 64px;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 249, 252, .92);
  padding: 0 28px;
  backdrop-filter: blur(12px);
}

.menu-button {
  display: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  padding: 8px 12px;
}

.topbar-home,
.topbar-support {
  color: var(--brand-strong);
  font-weight: 800;
  text-decoration: none;
}

.topbar-support {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-size: 14px;
  padding: 8px 12px;
}

.content-wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 44px 28px 72px;
}

.content {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 44px;
}

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

.content h1,
.content h2,
.content h3 {
  line-height: 1.25;
}

.content h1 {
  color: var(--brand-strong);
  font-size: 36px;
  margin: 0 0 22px;
}

.content h2 {
  border-top: 1px solid var(--line);
  color: var(--brand-strong);
  font-size: 25px;
  margin: 36px 0 14px;
  padding-top: 28px;
}

.content h3 {
  font-size: 20px;
  margin: 28px 0 10px;
}

.content p,
.content ul,
.content ol,
.content table,
.content pre {
  margin: 0 0 18px;
}

.content ul,
.content ol {
  padding-left: 24px;
}

.content li + li {
  margin-top: 4px;
}

.content code {
  border-radius: 5px;
  background: #eef4f8;
  color: #0f3f52;
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: .92em;
  padding: 2px 5px;
}

.content pre {
  overflow-x: auto;
  border-radius: 8px;
  background: var(--code-bg);
  color: var(--code-text);
  padding: 16px;
}

.content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.content table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
}

.content th,
.content td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.content th {
  background: #edf6f8;
  color: var(--brand-strong);
}

.content blockquote {
  border-left: 4px solid var(--accent);
  margin: 20px 0;
  padding: 8px 0 8px 16px;
  color: var(--muted);
}

.doc-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  margin-top: 36px;
  padding-top: 22px;
}

.doc-footer a {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--brand-strong);
  font-weight: 700;
  padding: 8px 12px;
  text-decoration: none;
}

@media (max-width: 900px) {
  .app-shell {
    display: block;
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 30;
    width: min(86vw, 330px);
    transform: translateX(-105%);
    transition: transform .2s ease;
  }

  .sidebar.is-open {
    transform: translateX(0);
  }

  .menu-button {
    display: inline-flex;
  }

  .topbar {
    padding: 0 16px;
  }

  .topbar-home {
    font-size: 14px;
  }

  .topbar-support {
    display: none;
  }

  .content-wrap {
    padding: 22px 14px 48px;
  }

  .content {
    padding: 24px 18px;
  }

  .content h1 {
    font-size: 28px;
  }

  .content h2 {
    font-size: 22px;
  }
}

@media (max-width: 520px) {
  .doc-footer {
    display: grid;
  }
}