/* Rubylight site: the web console's tokens, light and dark. */
:root {
  color-scheme: light;
  --font: 'Segoe UI Variable Text', 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --font-display: 'Segoe UI Variable Display', 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --mono: 'Cascadia Mono', 'Cascadia Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --bg: #f6f7f9;
  --panel: #ffffff;
  --sunken: #eef0f3;
  --ink: #16181c;
  --ink-2: #3d424a;
  --muted: #5f6570;
  --line: #dde0e6;
  --line-strong: #c5cad3;
  --accent: #c41242;
  --accent-ink: #ffffff;
  --accent-soft: #fde6ec;
  --link: #a30f37;
  --focus: #1f6fd1;
  --glow: rgb(196 18 66 / 16%);
  --series-bp: #c41242;
  --series-vp: #9aa0aa;
  --shadow: 0 1px 2px rgb(16 24 40 / 6%);
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0f1113;
    --panel: #171a1e;
    --sunken: #13161a;
    --ink: #e9ebee;
    --ink-2: #c3c8cf;
    --muted: #8b929c;
    --line: #2a2f36;
    --line-strong: #3a4049;
    --accent: #ff406c;
    --accent-ink: #16181c;
    --accent-soft: #3a1520;
    --link: #ff406c;
    --focus: #6aa6f0;
    --glow: rgb(255 64 108 / 13%);
    --series-bp: #ff406c;
    --series-vp: #6e7480;
    --shadow: none;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 var(--font);
  overflow-wrap: break-word;
}
a { color: var(--link); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
img, video { max-width: 100%; height: auto; }
code, pre, kbd { font-family: var(--mono); font-size: 0.88em; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; letter-spacing: -0.015em; }

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 17px;
  text-decoration: none;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.mark {
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 800;
  font-size: 15px;
  line-height: 1;
}
.mark.small { width: 18px; height: 18px; font-size: 11px; border-radius: 4px; vertical-align: -3px; }
.topnav {
  display: flex;
  gap: 4px;
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.topnav::-webkit-scrollbar { display: none; }
.topnav a {
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--ink-2);
  font-size: 14.5px;
  text-decoration: none;
  white-space: nowrap;
}
.topnav a:hover { background: var(--sunken); color: var(--ink); }
.topnav a[aria-current] { color: var(--ink); background: var(--sunken); font-weight: 600; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
}
.button:hover { filter: brightness(1.06); text-decoration: none; }
.button.ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.button.ghost:hover { background: var(--sunken); filter: none; }
.button.small { min-height: 36px; padding: 6px 14px; font-size: 14.5px; }

@media (max-width: 720px) {
  .topbar-inner { flex-wrap: wrap; gap: 6px 12px; padding: 8px 16px 6px; }
  .brand { flex: 1; }
  .topnav { order: 3; flex-basis: 100%; margin: 0 -10px; }
}

/* Landing */
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.wrap.narrow { max-width: 760px; }
.eyebrow {
  margin: 0 0 10px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.accent { color: var(--series-bp); }
@media (prefers-color-scheme: dark) { .accent { color: var(--accent); } }

.hero {
  position: relative;
  padding: 72px 0 56px;
  background: radial-gradient(60% 70% at 85% 10%, var(--glow), transparent 70%);
}
.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(38px, 7vw, 68px);
  font-weight: 750;
  letter-spacing: -0.03em;
  line-height: 1.04;
}
.lede { max-width: 640px; margin: 0 0 28px; color: var(--ink-2); font-size: clamp(17px, 2.2vw, 19.5px); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.fine { margin: 14px 0 0; color: var(--muted); font-size: 14px; }

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 48px;
}
.stat {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: var(--shadow);
}
.stat p { margin: 0; }
.stat-value {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.05;
}
.stat-value span { font-size: 22px; font-weight: 600; color: var(--muted); letter-spacing: 0; }
.stat-label { margin-top: 8px !important; color: var(--ink); font-size: 15.5px; line-height: 1.45; }
.stat-note { margin-top: 8px !important; color: var(--muted); font-size: 14px; }
@media (max-width: 860px) { .stats { grid-template-columns: 1fr; } .stat-value { font-size: 44px; } }

.film { padding: 8px 0 24px; }
.film video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #0f1113;
}
.caption { margin: 10px 0 0; color: var(--muted); font-size: 14px; }

.section { padding: 64px 0; }
.section.alt { background: var(--panel); border-block: 1px solid var(--line); }
.section h2 { margin: 0 0 14px; font-size: clamp(28px, 4.4vw, 40px); font-weight: 700; letter-spacing: -0.025em; }
.section-lede { max-width: 760px; color: var(--ink-2); font-size: 17px; }
.sub-title { margin: 48px 0 8px; font-size: 22px; }
.table-title { margin: 32px 0 10px; font-size: 17px; }
.note { max-width: 860px; color: var(--muted); font-size: 14.5px; }
.more { font-weight: 600; }
.more::after { content: " →"; }

/* Chart: bar = average, thin line = 95th percentile, scale 0 to 40 ms */
.chart {
  margin: 32px 0 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: var(--shadow);
}
.chart figcaption h3 { margin: 0 0 4px; font-size: 18px; }
.chart figcaption p { margin: 0; color: var(--muted); font-size: 14px; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 20px; margin: 16px 0 8px; color: var(--ink-2); font-size: 14px; }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
.key { display: inline-block; width: 12px; height: 12px; border-radius: 3px; }
.key.bp { background: var(--series-bp); }
.key.vp { background: var(--series-vp); }
.bars { --label: 112px; }
.group { margin-top: 16px; }
.group-label { margin: 0 0 6px; color: var(--ink); font-size: 14.5px; font-weight: 600; }
.bar-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--label);
  align-items: center;
  gap: 12px;
  height: 30px;
  border-radius: 4px;
  outline-offset: 2px;
}
.track {
  position: relative;
  height: 100%;
  background: linear-gradient(to right, var(--line) 1px, transparent 1px) 0 0 / 25% 100%;
  border-right: 1px solid var(--line);
}
.bar {
  position: absolute;
  left: 0;
  top: 5px;
  height: 20px;
  width: calc(var(--mean) * 2.5%);
  border-radius: 0 4px 4px 0;
}
.bar.bp { background: var(--series-bp); }
.bar.vp { background: var(--series-vp); }
.whisker {
  position: absolute;
  top: 14px;
  height: 2px;
  left: calc(var(--mean) * 2.5%);
  width: calc((var(--p95) - var(--mean)) * 2.5%);
  background: var(--ink-2);
}
.whisker::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -5px;
  width: 2px;
  height: 12px;
  background: var(--ink-2);
}
.val { color: var(--ink); font-size: 14px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.val b { font-weight: 650; }
.val small { margin-left: 6px; color: var(--muted); font-size: 12.5px; }
.tip {
  display: none;
  position: absolute;
  left: 0;
  bottom: calc(100% + 6px);
  z-index: 2;
  max-width: min(420px, 100%);
  padding: 8px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  font-size: 13px;
  line-height: 1.4;
  box-shadow: 0 6px 20px rgb(0 0 0 / 18%);
}
.bar-row:hover .tip, .bar-row:focus-visible .tip { display: block; }
.axis {
  position: relative;
  height: 18px;
  margin: 6px calc(var(--label) + 12px) 0 0;
  color: var(--muted);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
}
.axis span { position: absolute; transform: translateX(-50%); }
.axis span:nth-child(2) { left: 25%; }
.axis span:nth-child(3) { left: 50%; }
.axis span:nth-child(4) { left: 75%; }
.axis span:nth-child(5) { left: 100%; }
@media (max-width: 560px) {
  .chart { padding: 16px; }
  .bars { --label: 88px; }
  .bar-row { height: 38px; }
  .bar { top: 9px; }
  .whisker { top: 18px; }
  .val { line-height: 1.25; }
  .val small { display: block; margin: 0; }
}

/* Tables (landing and docs) */
.table-wrap {
  overflow-x: auto;
  margin: 16px 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th, td { padding: 9px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
thead th { background: var(--sunken); color: var(--ink); font-weight: 650; white-space: nowrap; }
tbody tr:last-child > * { border-bottom: 0; }
td small { color: var(--muted); }
.row-group th { background: var(--sunken); color: var(--muted); font-size: 12.5px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
td { font-variant-numeric: tabular-nums; }
.landing td + td { white-space: nowrap; }
@media (max-width: 560px) {
  table { font-size: 13.5px; }
  th, td { padding: 8px 10px; }
  .landing td:first-child { min-width: 128px; }
}

.results { padding-left: 20px; }
.results li { margin: 8px 0; color: var(--ink-2); }
.results b { color: var(--ink); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin: 28px 0;
}
.card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
}
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card h3::before {
  content: "";
  display: block;
  width: 24px;
  height: 4px;
  margin-bottom: 14px;
  border-radius: 2px;
  background: var(--accent);
}
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 28px 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}
.steps li {
  counter-increment: step;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
}
.steps li::before {
  content: counter(step);
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin-bottom: 12px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 750;
}
.steps h3 { margin: 0 0 6px; font-size: 18px; }
.steps p { margin: 0; color: var(--ink-2); font-size: 15px; }
.steps code { overflow-wrap: anywhere; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }

.links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
  margin-top: 24px;
}
.links a {
  display: grid;
  gap: 2px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  color: var(--ink);
  text-decoration: none;
}
.links a:hover { border-color: var(--line-strong); background: var(--sunken); }
.links span { color: var(--muted); font-size: 14px; }

.footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 16px 40px;
}
.landing .footer-inner { display: block; }
.footer p { max-width: 860px; margin: 0 0 10px; }

/* Documentation pages */
.doc { max-width: 880px; margin: 0 auto; padding: 32px 16px 48px; }
.toc {
  margin: 0 0 24px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  font-size: 15px;
}
.toc summary { cursor: pointer; font-weight: 600; }
.toc ol { margin: 10px 0 4px; padding-left: 22px; columns: 2 260px; column-gap: 32px; }
.toc li { break-inside: avoid; margin: 2px 0; }
.prose { font-size: 16px; }
.prose h1 { margin: 0 0 16px; font-size: clamp(30px, 5vw, 40px); font-weight: 720; letter-spacing: -0.025em; }
.prose h2 { margin: 44px 0 12px; padding-top: 8px; font-size: 26px; border-top: 1px solid var(--line); padding-top: 28px; }
.prose h3 { margin: 32px 0 10px; font-size: 20px; }
.prose h4 { margin: 24px 0 8px; font-size: 17px; }
.prose p, .prose ul, .prose ol { margin: 0 0 14px; }
.prose li { margin: 4px 0; }
.prose li > ul, .prose li > ol { margin: 4px 0 0; }
.prose :not(pre) > code {
  padding: 1px 5px;
  border-radius: 4px;
  background: var(--sunken);
  overflow-wrap: anywhere;
}
.prose pre {
  overflow-x: auto;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--sunken);
  line-height: 1.5;
}
.prose pre code { font-size: 13.5px; }
.prose blockquote { margin: 0 0 14px; padding: 2px 16px; border-left: 3px solid var(--accent); color: var(--ink-2); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }
.prose img { border-radius: 8px; }
.prose table { font-size: 14px; }
.prose td, .prose th { min-width: 96px; }
.prose td:first-child, .prose th:first-child { min-width: 140px; }
.prose .long { min-width: 18em; }
.header-anchor {
  margin-left: 6px;
  color: var(--muted);
  font-weight: 400;
  text-decoration: none;
  opacity: 0;
}
:is(h1, h2, h3, h4, h5, h6):hover .header-anchor, .header-anchor:focus-visible { opacity: 1; }
.doc-source { margin: 40px 0 0; font-size: 14px; color: var(--muted); }

.quotes {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin: 28px 0 16px;
}
.quote {
  margin: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  background: var(--panel);
}
.quote blockquote { margin: 0 0 12px; color: var(--ink); font-size: 16px; }
.quote figcaption { color: var(--muted); font-size: 14px; font-weight: 600; }