:root {
  --bg: #f6f8ff;
  --card: #ffffff;
  --ink: #16182a;
  --dim: #5a6076;
  --line: #dfe4f2;
  --indigo: #4c5bd4;
  --coral: #f4614a;
  --mint: #14a98a;
  --sun: #d99a06;
  --violet: #8f4fe0;
  --sky: #1f95d8;
  --code-bg: #14162a;
  --code-ink: #e9ecff;
  --code-dim: #7d86b8;
  --tint-indigo: #eceeff;
  --tint-coral: #ffeeea;
  --tint-mint: #e5f8f3;
  --tint-sun: #fff5da;
  --tint-violet: #f5ecff;
  --tint-sky: #e6f4fd;
  --accent: var(--indigo);
  --accent-tint: var(--tint-indigo);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #101223;
    --card: #191c33;
    --ink: #f0f2ff;
    --dim: #a3aac6;
    --line: #2a2f4d;
    --indigo: #8d99ff;
    --coral: #ff8e7c;
    --mint: #45d7b6;
    --sun: #ffc844;
    --violet: #bd8bff;
    --sky: #5cc0f5;
    --code-bg: #0a0b16;
    --code-ink: #e9ecff;
    --code-dim: #7d86b8;
    --tint-indigo: #1e2350;
    --tint-coral: #3a2029;
    --tint-mint: #10352f;
    --tint-sun: #3a2f10;
    --tint-violet: #2b1d47;
    --tint-sky: #12293f;
  }
}
:root[data-theme="dark"] {
  --bg: #101223;
  --card: #191c33;
  --ink: #f0f2ff;
  --dim: #a3aac6;
  --line: #2a2f4d;
  --indigo: #8d99ff;
  --coral: #ff8e7c;
  --mint: #45d7b6;
  --sun: #ffc844;
  --violet: #bd8bff;
  --sky: #5cc0f5;
  --code-bg: #0a0b16;
  --code-ink: #e9ecff;
  --code-dim: #7d86b8;
  --tint-indigo: #1e2350;
  --tint-coral: #3a2029;
  --tint-mint: #10352f;
  --tint-sun: #3a2f10;
  --tint-violet: #2b1d47;
  --tint-sky: #12293f;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 ui-rounded, "SF Pro Rounded", "Segoe UI Variable Display", Nunito,
        system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.page {
  display: grid;
  grid-template-columns: 15rem minmax(0, 46rem);
  gap: 3rem;
  max-width: 66rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 6rem;
}

nav {
  position: sticky;
  top: 2.5rem;
  align-self: start;
  font-size: 0.9rem;
}

nav .mark {
  display: block;
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.4rem;
  margin-bottom: 1.2rem;
}

nav ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

nav li { margin: 0.35rem 0; }

nav a {
  color: var(--dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 0.7rem;
  display: block;
}

nav a:hover { color: var(--ink); }

nav a.here {
  color: var(--ink);
  font-weight: 700;
  border-left-color: var(--accent);
}

nav .away {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 0.85rem;
}

nav .away a { color: var(--accent); }

main { min-width: 0; }

h1 {
  font-size: 2rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.6rem;
  font-weight: 800;
  text-wrap: balance;
}

h2 {
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  font-weight: 800;
  margin: 2.6rem 0 0.6rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
}

h3 {
  font-size: 1.04rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 1.7rem 0 0.4rem;
}

p { margin: 0.8rem 0; }

.lede {
  font-size: 1.14rem;
  color: var(--dim);
  margin: 0 0 2rem;
  max-width: 42rem;
}

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

code, pre, kbd, td code {
  font-family: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
}

p code, li code {
  background: var(--accent-tint);
  color: var(--accent);
  border-radius: 0.4rem;
  padding: 0.08em 0.35em;
}

pre {
  position: relative;
  background: var(--code-bg);
  border-radius: 0.9rem;
  padding: 1.1rem 1rem 0.9rem;
  overflow-x: auto;
  line-height: 1.5;
  margin: 1rem 0;
}

pre code {
  background: none;
  padding: 0;
  color: var(--code-ink);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 0.84rem;
}

pre .copy {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  border: 0;
  border-radius: 0.6rem;
  padding: 0.35rem 0.6rem;
  background: rgba(255, 255, 255, 0.1);
  color: var(--code-ink);
  font: inherit;
  font-size: 0.76rem;
  font-weight: 700;
  cursor: pointer;
}

pre .copy:hover { background: rgba(255, 255, 255, 0.2); }
pre .copy:focus-visible { outline: 2px solid var(--sun); outline-offset: 2px; }
pre .copy.done { background: var(--mint); color: #04150f; }

kbd {
  background: var(--card);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0.05em 0.35em;
  white-space: nowrap;
}

table {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  margin: 1rem 0;
  font-size: 0.95rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.55rem 0.8rem;
  border-bottom: 1px solid var(--line);
}

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

th {
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--dim);
  background: var(--tint-indigo);
  border-bottom: 1px solid var(--line);
}

td:first-child { white-space: nowrap; padding-right: 1.2rem; }

td.wrap:first-child { white-space: normal; }

ul, ol { padding-left: 1.2rem; }

li { margin: 0.3rem 0; }

.note {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 0.9rem;
  padding: 0.8rem 1.1rem;
  margin: 1.4rem 0;
}

.note p { margin: 0.3rem 0; }

footer {
  grid-column: 2;
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 0.85rem;
}

footer a { color: var(--accent); font-weight: 600; }

@media (max-width: 62rem) {
  .page { grid-template-columns: 1fr; gap: 1.5rem; }
  nav { position: static; }
  nav ol { columns: 2; }
  footer { grid-column: 1; }
}