:root {
  --pink: #f41469;
  --ink: #131a24;
  --paper: #ffffff;
  --muted: #4b5563;
  --line: #e5e7eb;
  --code: #f3f4f6;
  --bg: #ffffff;
  --fg: #1f2937;
  --header: #ffffff;
}

[data-theme="dark"] {
  --paper: #111827;
  --muted: #9ca3af;
  --line: #374151;
  --code: #1f2937;
  --bg: #0b1017;
  --fg: #e5e7eb;
  --header: #0b1017;
  --ink: #f6f7f9;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.65;
  font-size: 16px;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 3.5rem;
  padding: 0 1.5rem;
  background: var(--header);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.brand img {
  display: block;
  height: 28px;
  width: auto;
}

.brand .dark { display: none; }
[data-theme="dark"] .brand .light { display: none; }
[data-theme="dark"] .brand .dark { display: block; }

.top nav {
  display: flex;
  gap: 1.25rem;
  flex: 1;
}

.top nav a {
  color: var(--pink);
  text-decoration: none;
  white-space: nowrap;
}

.cta a,
footer a {
  color: var(--pink);
  text-decoration: none;
}

.top nav a:hover,
.cta a:hover,
footer a:hover {
  text-decoration: underline;
}

.controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.lang select,
.theme,
.menu {
  font: inherit;
  font-size: 0.875rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.3rem 0.5rem;
}

.menu { display: none; }

main {
  max-width: 48rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.kicker {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: 2.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}

h2 {
  margin: 2.25rem 0 0.75rem;
  padding-top: 0.5rem;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink);
}

.lede {
  margin: 0 0 1rem;
  font-size: 1.05rem;
}

.cta {
  display: flex;
  gap: 1.25rem;
  margin: 0 0 2rem;
}

ul, ol { padding-left: 1.25rem; }
li { margin: 0.35rem 0; }

pre {
  overflow-x: auto;
  padding: 1rem 1.1rem;
  background: var(--code);
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 0.9rem;
  line-height: 1.5;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

p code, td code, li code {
  padding: 0.1em 0.35em;
  background: var(--code);
  border-radius: 3px;
}

.steps { display: none; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid var(--line);
}

thead th {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

tbody th { font-weight: 600; }

.board {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 0.75rem;
  border: 1px solid var(--line);
}

footer {
  max-width: 48rem;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--line);
}

footer p { margin: 1rem 0 0; }

@media (max-width: 800px) {
  .menu { display: inline-block; }
  .top {
    flex-wrap: wrap;
    padding: 0.6rem 1rem;
  }
  .top nav {
    display: none;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
    order: 4;
    padding: 0.25rem 0 0.75rem;
  }
  .top nav.open { display: flex; }
  .controls { margin-left: 0; }
  h1 { font-size: 1.85rem; }
  table { display: block; overflow-x: auto; }
}