:root {
  color-scheme: dark;
  --bg: #080d16;
  --panel: #0d1626;
  --panel-2: #111d30;
  --line: #22324b;
  --text: #edf4ff;
  --muted: #9fb0c7;
  --blue: #38bdf8;
  --green: #34d399;
  --amber: #fbbf24;
  --red: #fb7185;
}

* {
  box-sizing: border-box;
}

html {
  scroll-padding-top: 76px;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.12), transparent 34rem),
    linear-gradient(180deg, #0a1020 0%, var(--bg) 45%, #05070d 100%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(8, 13, 22, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.topbar .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0.02em;
}

.topbar .logo span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.topbar nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.topbar nav a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(13, 22, 38, 0.9);
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.topbar nav a.primary {
  border-color: rgba(56, 189, 248, 0.45);
  color: var(--blue);
}

.layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 28px;
  width: min(1240px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.sidebar {
  position: sticky;
  top: 76px;
  align-self: start;
  max-height: calc(100vh - 96px);
  overflow-y: auto;
}

.sidebar h2 {
  margin: 0 0 8px;
  padding: 0;
  border: 0;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.sidebar ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.sidebar a {
  display: block;
  padding: 7px 10px;
  border-radius: 7px;
  color: var(--muted);
  font-size: 14px;
}

.sidebar a:hover {
  background: var(--panel-2);
  color: var(--text);
  text-decoration: none;
}

.sidebar a[aria-current="page"] {
  background: var(--panel-2);
  color: var(--text);
  font-weight: 700;
  box-shadow: inset 3px 0 0 var(--blue);
}

main {
  min-width: 0;
}

.eyebrow {
  color: var(--blue);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.12em;
}

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

h1 {
  margin-top: 6px;
  font-size: clamp(30px, 4.5vw, 44px);
  letter-spacing: -0.02em;
}

h2 {
  margin-top: 40px;
  padding-top: 8px;
  font-size: 24px;
  border-top: 1px solid var(--line);
  padding-top: 28px;
}

h3 {
  margin-top: 26px;
  font-size: 18px;
}

p,
li {
  color: var(--muted);
}

p {
  margin: 12px 0 0;
}

ul,
ol.list {
  margin: 12px 0 0;
  padding-left: 22px;
}

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

strong {
  color: var(--text);
}

.lead {
  font-size: 18px;
  max-width: 820px;
}

.toc {
  margin-top: 22px;
  padding: 14px 18px;
  background: rgba(13, 22, 38, 0.9);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.toc strong {
  display: block;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.toc ul {
  columns: 2;
  column-gap: 24px;
  margin-top: 8px;
}

pre {
  margin: 16px 0 0;
  padding: 16px;
  overflow: auto;
  border-radius: 8px;
  background: #020617;
  border: 1px solid #18243a;
  color: #dbeafe;
  font-size: 13px;
  line-height: 1.5;
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.92em;
}

p code,
li code,
td code {
  padding: 1px 5px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.06);
  color: #dbeafe;
  overflow-wrap: anywhere;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

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

th,
td {
  text-align: left;
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  color: var(--muted);
}

th {
  background: var(--panel-2);
  color: var(--text);
  font-weight: 700;
}

tr:last-child td {
  border-bottom: 0;
}

.note {
  border-left: 3px solid var(--amber);
  background: rgba(251, 191, 36, 0.07);
  padding: 12px 14px;
  border-radius: 8px;
  margin-top: 16px;
  color: #fde68a;
}

.note code {
  background: rgba(0, 0, 0, 0.25);
}

.note.safe {
  border-left-color: var(--green);
  background: rgba(52, 211, 153, 0.08);
  color: #bbf7d0;
}

.note.danger {
  border-left-color: var(--red);
  background: rgba(251, 113, 133, 0.08);
  color: #fecdd3;
}

.note strong {
  color: inherit;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.cards a,
.cards div {
  display: block;
  padding: 16px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
}

.cards a:hover {
  border-color: rgba(56, 189, 248, 0.5);
  text-decoration: none;
}

.cards strong {
  display: block;
  font-size: 16px;
}

.cards span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.flow {
  margin-top: 16px;
  display: grid;
  gap: 8px;
  counter-reset: flow;
}

.flow div {
  position: relative;
  padding: 10px 12px 10px 44px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
}

.flow div::before {
  counter-increment: flow;
  content: counter(flow);
  position: absolute;
  left: 12px;
  top: 10px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--blue);
  color: #00111f;
  font-weight: 800;
  font-size: 12px;
}

.pager {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.pager a {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  font-weight: 700;
}

footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    padding-top: 18px;
  }

  .sidebar {
    position: static;
    max-height: none;
    padding: 12px;
    background: rgba(13, 22, 38, 0.9);
    border: 1px solid var(--line);
    border-radius: 10px;
  }

  .sidebar ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .toc ul {
    columns: 1;
  }

  .topbar .logo span {
    display: none;
  }
}