:root {
  color-scheme: dark;
  --ys-bg: #0c0e12;
  --ys-panel: #181c24;
  --ys-line: rgba(180, 190, 210, 0.14);
  --ys-text: #e8ecf2;
  --ys-muted: #8b95a8;
  --ys-signal: #ff4d1a;
  --sans: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --display: "Syne", "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html { background: var(--ys-bg); }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--ys-bg);
  color: var(--ys-text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(rgba(180, 190, 210, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(180, 190, 210, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
}

a { color: var(--ys-signal); text-decoration: none; }
a:hover { color: #ff7a4d; }

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 1.5rem 1.15rem 4rem;
}

.top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--ys-line);
}

.brand {
  display: inline-flex;
  flex-direction: column;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  color: var(--ys-text) !important;
  line-height: 1.1;
}

.brand small {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--ys-muted);
  margin-top: 0.2rem;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  font-size: 0.9rem;
}

.top-nav a {
  color: var(--ys-muted);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.top-nav a:hover,
.top-nav a.is-current {
  color: var(--ys-signal);
  border-bottom-color: var(--ys-signal);
}

.kicker {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ys-signal);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 0.65rem;
}

h1 {
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.03em;
  font-size: clamp(1.7rem, 4vw, 2.35rem);
  line-height: 1.15;
  margin: 0 0 0.75rem;
  color: var(--ys-text);
}

.lead {
  color: var(--ys-muted);
  font-size: 1rem;
  margin: 0 0 1rem;
}

.lang {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

h2, h3 {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ys-text);
}

h2 {
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--ys-line);
}

h3 {
  font-size: 1.05rem;
  margin: 1.35rem 0 0.5rem;
}

p, li {
  color: var(--ys-muted);
  font-size: 0.94rem;
}

.updated {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ys-muted);
}

code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--ys-panel);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  border: 1px solid var(--ys-line);
}

ul { padding-left: 1.2rem; }
li { margin: 0.35rem 0; }

article {
  background: var(--ys-panel);
  border: 1px solid var(--ys-line);
  border-radius: 5px;
  padding: 1.25rem 1.35rem 1.75rem;
  margin-bottom: 1.5rem;
}

footer, .foot {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--ys-line);
  font-size: 0.85rem;
  color: var(--ys-muted);
}