:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080b11;
  color: #eef2f7;
  font-synthesis: none;
  --cyan: #22d3ee;
  --gold: #eab308;
  --violet: #a78bfa;
  --line: rgba(255, 255, 255, 0.09);
  --muted: #8f9aaa;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 60% -20%, rgba(34, 211, 238, 0.08), transparent 32rem),
    #080b11;
}
a { color: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 11, 17, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 760;
  letter-spacing: -0.02em;
}
.brand svg { width: 25px; height: 18px; }
.brand span { font-size: 18px; }
.brand em {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  font-style: normal;
  font-weight: 550;
  letter-spacing: 0;
}
.topbar nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: #aab3c0;
  font-size: 13px;
}
.topbar nav a { text-decoration: none; }
.topbar nav a:hover { color: white; }
.topbar .terminal {
  padding: 9px 13px;
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 8px;
  background: rgba(34, 211, 238, 0.07);
  color: #aaf4ff;
}

.shell {
  width: min(1440px, 100%);
  min-height: calc(100vh - 64px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 230px minmax(0, 760px) 210px;
  justify-content: center;
}

.sidebar,
.toc {
  position: sticky;
  top: 64px;
  align-self: start;
  max-height: calc(100vh - 64px);
  padding: 44px 24px;
  overflow: auto;
}
.sidebar { border-right: 1px solid var(--line); }
.toc { border-left: 1px solid var(--line); }
.eyebrow {
  margin-bottom: 14px;
  color: #677386;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.sidebar nav,
.toc nav {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.sidebar nav a,
.toc nav a {
  padding: 8px 10px;
  border-radius: 7px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.25;
  text-decoration: none;
}
.sidebar nav a:hover,
.toc nav a:hover { color: #fff; }
.sidebar nav a[aria-current="page"] {
  background: rgba(34, 211, 238, 0.08);
  color: #b8f5ff;
  box-shadow: inset 2px 0 var(--cyan);
}
.sidebar-note {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 30px 10px 0;
  color: #667284;
  font: 11px ui-monospace, SFMono-Regular, Menlo, monospace;
}
.sidebar-note span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 10px rgba(52, 211, 153, 0.65);
}

main {
  min-width: 0;
  padding: 70px 72px 40px;
}
article { min-height: calc(100vh - 220px); }
article h1 {
  max-width: 680px;
  margin: 0 0 24px;
  font-size: clamp(38px, 6vw, 62px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}
article h1::after {
  content: "";
  display: block;
  width: 74px;
  height: 3px;
  margin-top: 26px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--cyan), var(--gold), var(--violet));
}
article h2 {
  margin: 54px 0 17px;
  padding-top: 4px;
  font-size: 22px;
  letter-spacing: -0.025em;
  scroll-margin-top: 90px;
}
article h3 {
  margin: 34px 0 12px;
  font-size: 17px;
}
article p,
article li {
  color: #aeb8c6;
  font-size: 15px;
  line-height: 1.78;
}
article p { margin: 0 0 18px; }
article ul,
article ol {
  margin: 12px 0 24px;
  padding-left: 23px;
}
article li {
  margin: 7px 0;
  padding-left: 4px;
}
article strong {
  color: #e8edf4;
  font-weight: 650;
}
article a {
  color: #74e7f7;
  text-decoration-color: rgba(116, 231, 247, 0.35);
  text-underline-offset: 3px;
}
article code {
  padding: 2px 5px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #101620;
  color: #cdeff4;
  font: 0.86em ui-monospace, SFMono-Regular, Menlo, monospace;
}
.code-block {
  margin: 22px 0 28px;
  border: 1px solid rgba(34, 211, 238, 0.13);
  border-radius: 11px;
  background: linear-gradient(145deg, #0b1018, #0d141e);
  overflow: hidden;
  box-shadow:
    inset 0 1px rgba(255, 255, 255, 0.025),
    0 18px 50px rgba(0, 0, 0, 0.2);
}
.code-toolbar {
  min-height: 39px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 9px 7px 16px;
  border-bottom: 1px solid var(--line);
  color: #4f5b6d;
  font: 9px ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.copy-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 27px;
  padding: 5px 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.025);
  color: #8491a2;
  cursor: pointer;
  font: 10px ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0;
  text-transform: none;
}
.copy-button:hover {
  border-color: rgba(34, 211, 238, 0.25);
  background: rgba(34, 211, 238, 0.06);
  color: #c7f7fd;
}
.copy-button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.copy-button[data-state="copied"] {
  border-color: rgba(52, 211, 153, 0.3);
  color: #86efac;
}
.copy-button svg {
  width: 13px;
  height: 13px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}
article pre {
  margin: 0;
  padding: 17px 22px 21px;
  overflow-x: auto;
}
article pre code {
  padding: 0;
  border: 0;
  background: transparent;
  color: #d8e4ec;
  font-size: 12.5px;
  line-height: 1.75;
}
article blockquote {
  margin: 28px 0;
  padding: 16px 18px;
  border: 1px solid rgba(167, 139, 250, 0.18);
  border-left: 3px solid var(--violet);
  border-radius: 0 9px 9px 0;
  background: rgba(167, 139, 250, 0.05);
  color: #bdc6d3;
  font-size: 14px;
  line-height: 1.65;
}

main footer {
  display: flex;
  justify-content: space-between;
  margin-top: 70px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: #667284;
  font-size: 11px;
}
main footer a {
  color: #8f9aaa;
  text-decoration: none;
}
main footer a:hover { color: white; }
.toc nav a {
  padding: 5px 0;
  font-size: 12px;
}

@media (max-width: 1050px) {
  .shell { grid-template-columns: 210px minmax(0, 760px); }
  .toc { display: none; }
}

@media (max-width: 720px) {
  .topbar {
    height: 58px;
    padding: 0 18px;
  }
  .topbar nav > a:first-child { display: none; }
  .shell {
    display: block;
    min-height: calc(100vh - 58px);
  }
  .sidebar {
    position: static;
    display: flex;
    gap: 6px;
    padding: 12px 18px;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .sidebar .eyebrow,
  .sidebar-note { display: none; }
  .sidebar nav {
    flex-direction: row;
    white-space: nowrap;
  }
  .sidebar nav a { padding: 8px 10px; }
  .sidebar nav a[aria-current="page"] { box-shadow: inset 0 -2px var(--cyan); }
  main { padding: 48px 22px 30px; }
  article h1 { font-size: 42px; }
  article h2 { margin-top: 45px; }
  .code-block {
    margin-right: -6px;
    margin-left: -6px;
  }
  article pre { padding: 16px 18px 19px; }
}