/* open agent lab: measurement-sheet identity.
   Cool gray-green paper, ink text, one deep green accent, a chartreuse
   highlighter used only behind dark text, and ruler ticks as the signature.
   System sans for prose, system mono for every number and label.
   Motion: one page-load moment (the rerun grid filling in on the home page),
   marks that grow from a visible state, and small hover and focus responses.
   Everything is final in the HTML; animation is layered on top and switched
   off for prefers-reduced-motion. */

:root {
  color-scheme: light;
  --bg: #f2f5f3;
  --surface: #fcfdfc;
  --surface-2: #e8edea;
  --ink: #0f1614;
  --ink-2: #39443f;
  --muted: #5a6661;
  --rule: #cdd6d1;
  --grid: #e0e6e3;
  --axis: #b5c0bb;
  --accent: #0a6650;
  --accent-ink: #ffffff;
  --accent-soft: #d7ebe4;
  --signal: #d4ef3f;
  --signal-ink: #182000;
  --focus: #1a5fd0;
  --s1: #2a78d6;
  --s2: #eb6834;
  --s3: #1baf7a;
  --pass-bg: #d6ecd8;
  --pass-ink: #0b5e0b;
  --fail-bg: #d03b3b;
  --fail-ink: #ffffff;
  --tip-bg: #0f1614;
  --tip-ink: #f2f5f3;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, "Cascadia Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --radius: 6px;
  --wrap: 68rem;
  --ease: cubic-bezier(0.2, 0.75, 0.25, 1);
  --hl: rgba(212, 239, 63, 0.38);
  --press: rgba(15, 22, 20, 0.22);
  --term-bg: #121a18;
  --term-bar: #1b2422;
  --term-ink: #e7eeeb;
  --term-muted: #9fb0aa;
  --term-prompt: #5fd0ad;
  --term-frame: #1e1e2e;
  --header-h: 4.6rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0c1110;
    --surface: #151b1a;
    --surface-2: #1d2624;
    --ink: #e7eeeb;
    --ink-2: #b7c3be;
    --muted: #91a09a;
    --rule: #2c3734;
    --grid: #242e2b;
    --axis: #3d4a46;
    --accent: #5fd0ad;
    --accent-ink: #062018;
    --accent-soft: #15302a;
    --signal: #cdea45;
    --signal-ink: #182000;
    --focus: #84b4ff;
    --s1: #3987e5;
    --s2: #d95926;
    --s3: #199e70;
    --pass-bg: #173a1d;
    --pass-ink: #7fdc7f;
    --fail-bg: #d03b3b;
    --fail-ink: #ffffff;
    --tip-bg: #e7eeeb;
    --tip-ink: #0c1110;
    --hl: rgba(205, 234, 69, 0.2);
    --press: rgba(0, 0, 0, 0.55);
    --term-bg: #080c0b;
    --term-bar: #111816;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0c1110;
  --surface: #151b1a;
  --surface-2: #1d2624;
  --ink: #e7eeeb;
  --ink-2: #b7c3be;
  --muted: #91a09a;
  --rule: #2c3734;
  --grid: #242e2b;
  --axis: #3d4a46;
  --accent: #5fd0ad;
  --accent-ink: #062018;
  --accent-soft: #15302a;
  --signal: #cdea45;
  --signal-ink: #182000;
  --focus: #84b4ff;
  --s1: #3987e5;
  --s2: #d95926;
  --s3: #199e70;
  --pass-bg: #173a1d;
  --pass-ink: #7fdc7f;
  --fail-bg: #d03b3b;
  --fail-ink: #ffffff;
  --tip-bg: #e7eeeb;
  --tip-ink: #0c1110;
  --hl: rgba(205, 234, 69, 0.2);
  --press: rgba(0, 0, 0, 0.55);
  --term-bg: #080c0b;
  --term-bar: #111816;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
/* Smooth scrolling for in-page links only; site.js turns it on after load
   so a deep link lands on its section directly. */
@media (prefers-reduced-motion: no-preference) {
  html.smooth {
    scroll-behavior: smooth;
  }
}
[id] {
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
  overflow-wrap: break-word;
  transition:
    background-color 0.3s var(--ease),
    color 0.3s var(--ease);
}

/* Applied for a moment when the theme button is pressed, so every surface
   crossfades to the new tokens together. */
.theme-fade,
.theme-fade *,
.theme-fade *::before,
.theme-fade *::after {
  transition:
    background-color 0.4s var(--ease),
    color 0.4s var(--ease),
    border-color 0.4s var(--ease),
    fill 0.4s var(--ease),
    stroke 0.4s var(--ease),
    box-shadow 0.4s var(--ease) !important;
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
  transition:
    color 0.2s var(--ease),
    text-decoration-thickness 0.2s var(--ease),
    text-underline-offset 0.2s var(--ease);
}
a:hover {
  text-decoration-thickness: 2px;
  text-underline-offset: 0.24em;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: 2px;
}

code,
pre,
.mono {
  font-family: var(--mono);
  font-size: 0.9em;
}
code {
  background: var(--surface-2);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}
pre {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.55;
}
pre code {
  background: none;
  padding: 0;
}

.nowrap {
  white-space: nowrap;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--ink);
  color: var(--bg);
  padding: 0.5rem 0.75rem;
  z-index: 10;
}
.skip:focus {
  top: 0.5rem;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 1rem;
}
@media (min-width: 720px) {
  .wrap {
    padding: 0 2rem;
  }
}

/* ------------------------------------------------------------ header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--surface);
  border-bottom: 1px solid var(--rule);
  transition:
    box-shadow 0.25s var(--ease),
    background-color 0.3s var(--ease);
  view-transition-name: site-header;
}
.site-header.scrolled {
  box-shadow: 0 8px 18px -12px var(--press);
}
.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.6rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
}
.logo rect {
  fill: var(--ink);
  transform-box: fill-box;
  transform-origin: 50% 100%;
  transition: transform 0.3s var(--ease);
}
.brand:hover .logo rect:nth-child(1) {
  transform: scaleY(0.7);
}
.brand:hover .logo rect:nth-child(3) {
  transform: scaleY(1.35);
}
.logo .logo-hi {
  fill: var(--accent);
}
.site-header nav {
  margin-left: auto;
}
.site-header nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.2rem;
}
.site-header nav a {
  position: relative;
  display: block;
  padding: 0.3rem 0.55rem;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.92rem;
  border-radius: 4px;
  white-space: nowrap;
  transition:
    color 0.16s var(--ease),
    background-color 0.16s var(--ease);
}
.site-header nav a::after {
  content: "";
  position: absolute;
  left: 0.55rem;
  right: 0.55rem;
  bottom: 0.1rem;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s var(--ease);
}
.site-header nav a:hover,
.site-header nav a:focus-visible {
  color: var(--ink);
}
.site-header nav a:hover::after,
.site-header nav a:focus-visible::after {
  transform: scaleX(1);
}
/* The current page wears the highlighter. Its view-transition name lets
   the highlight slide to the new link on cross-page navigation. */
.site-header nav a[aria-current="page"] {
  background: var(--signal);
  color: var(--signal-ink);
  font-weight: 600;
  view-transition-name: nav-current;
}
.site-header nav a[aria-current="page"]::after {
  display: none;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font: 500 0.72rem/1 var(--mono);
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.4rem 0.55rem;
  min-height: 2rem;
  cursor: pointer;
  transition:
    border-color 0.16s var(--ease),
    color 0.16s var(--ease),
    background-color 0.16s var(--ease);
}
.theme-toggle:hover {
  border-color: var(--ink-2);
  color: var(--ink);
}
.theme-toggle svg {
  transition: transform 0.45s var(--ease);
}
.theme-toggle:hover svg {
  transform: rotate(180deg);
}
.theme-label {
  min-width: 2.6em;
  text-align: left;
}
html:not(.js) .theme-toggle {
  display: none;
}

@media (max-width: 760px) {
  :root {
    --header-h: 6rem;
  }
  .header-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    padding-bottom: 0.35rem;
  }
  /* Every page link stays visible: the list wraps instead of scrolling
     sideways, where the last links would sit off screen. */
  .site-header nav {
    grid-column: 1 / -1;
    grid-row: 2;
    margin: 0 -0.5rem;
  }
  .site-header nav a {
    font-size: 0.88rem;
    padding: 0.3rem 0.5rem;
  }
}
@media (max-width: 520px) {
  :root {
    --header-h: 7.6rem;
  }
}
.ruler {
  position: relative;
  height: 10px;
  background-image:
    repeating-linear-gradient(90deg, var(--ink-2) 0 1px, transparent 1px 80px),
    repeating-linear-gradient(90deg, var(--axis) 0 1px, transparent 1px 8px);
  background-size:
    100% 10px,
    100% 5px;
  background-position:
    0 100%,
    0 100%;
  background-repeat: no-repeat;
}

/* ------------------------------------------------------------ type */

main.wrap {
  padding-top: 2.25rem;
  padding-bottom: 4rem;
}
h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.6rem;
}
h1 {
  font-size: clamp(2rem, 1.4rem + 2.6vw, 3.1rem);
  font-weight: 760;
  max-width: 22ch;
}
h2 {
  font-size: clamp(1.4rem, 1.2rem + 0.9vw, 1.85rem);
  font-weight: 720;
}
h3 {
  font-size: 1.1rem;
  font-weight: 680;
  letter-spacing: -0.01em;
  margin-top: 2rem;
}
p,
ul,
ol,
dl {
  margin: 0 0 1rem;
}
.lede {
  font-size: 1.15rem;
  color: var(--ink-2);
  max-width: 44rem;
}
.small {
  font-size: 0.875rem;
  color: var(--muted);
}
.eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
  margin: 0 0 0.5rem;
}
.eyebrow .mono {
  color: var(--accent);
  font-size: 1em;
  margin-right: 0.4em;
}

section {
  margin-top: 3.5rem;
}
.page-head {
  margin-bottom: 1rem;
}
.hero {
  margin-top: 0.5rem;
  padding-bottom: 0.5rem;
  display: grid;
  gap: 2rem 3rem;
  align-items: center;
}
@media (min-width: 980px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) auto;
  }
  .hero.hero-wide {
    grid-template-columns: minmax(0, 1fr);
  }
}
.hero h1 {
  max-width: 18ch;
}
.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-ink);
  text-decoration: none;
  font-weight: 600;
  padding: 0.6rem 1rem;
  border-radius: 4px;
  border: 1px solid var(--accent);
  line-height: 1.2;
  box-shadow: 0 0 0 var(--press);
  transition:
    transform 0.16s var(--ease),
    box-shadow 0.16s var(--ease),
    background-color 0.2s var(--ease),
    border-color 0.2s var(--ease),
    filter 0.2s var(--ease);
}
.button:hover,
.button:focus-visible {
  filter: brightness(1.08);
  transform: translateY(-2px);
  box-shadow: 0 3px 0 var(--press);
}
.button:active {
  transform: translateY(0);
  box-shadow: 0 0 0 var(--press);
}
.button.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--axis);
}
.button.ghost:hover,
.button.ghost:focus-visible {
  background: var(--surface-2);
  border-color: var(--ink-2);
  filter: none;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.5rem 0 0.75rem;
}
.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 1.2;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--rule);
  border-radius: 3px;
  color: var(--ink-2);
  background: var(--surface);
}
.badge.pilot {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--signal-ink);
  font-weight: 700;
}

.rules {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  padding: 0.8rem 1rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  max-width: 48rem;
}
.rules p {
  margin: 0;
}

.verdict {
  border-left: 3px solid var(--ink-2);
  padding: 0.2rem 0 0.2rem 0.8rem;
  color: var(--ink-2);
  max-width: 48rem;
}

ul.plain,
ol.steps {
  padding-left: 1.25rem;
  max-width: 48rem;
}
ul.plain li,
ol.steps li {
  margin-bottom: 0.45rem;
}
ul.notes {
  padding-left: 1.25rem;
  max-width: 48rem;
  color: var(--ink-2);
}

/* ------------------------------------------------------------ cards */

.latest,
.result-head,
.tool,
.empty {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.latest {
  padding: 1.25rem;
}
.latest-head h3 {
  margin-top: 0;
}
.latest .chart {
  margin-top: 1rem;
}
.more,
.go {
  font-weight: 600;
  text-decoration: none;
  background: linear-gradient(currentColor, currentColor) 0 100% / 0 2px no-repeat;
  padding-bottom: 2px;
  transition:
    background-size 0.25s var(--ease),
    color 0.2s var(--ease);
}
.more::after,
.go::after {
  content: "\2192";
  display: inline-block;
  margin-left: 0.35em;
  transition: transform 0.25s var(--ease);
}
.more:hover,
.more:focus-visible,
.go:hover,
.go:focus-visible {
  background-size: 100% 2px;
}
.more:hover::after,
.more:focus-visible::after,
.go:hover::after,
.go:focus-visible::after {
  transform: translateX(4px);
}

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}
.tile {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  background: var(--bg);
  transition:
    transform 0.2s var(--ease),
    border-color 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
}
.tile:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 4px 4px 0 var(--accent-soft);
}
.tile-name {
  font-weight: 700;
  margin: 0;
}
.tile-sub {
  color: var(--muted);
  font-size: 0.8rem;
  margin: 0 0 0.6rem;
}
.tile dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 1rem;
  margin: 0;
}
.tile dt {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.tile dd {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.tile dd span {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--muted);
}

.tools {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.75rem;
}
.tool {
  padding: 1rem 1.1rem;
  position: relative;
}
.tool h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}
.tool p {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
}
.tool-role {
  color: var(--muted);
  font-size: 0.875rem !important;
  border-top: 1px solid var(--grid);
  padding-top: 0.5rem;
}

.cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1rem 2rem;
}
.col h3 {
  margin-top: 0.5rem;
}

.empty {
  padding: 1.5rem 1.25rem;
  max-width: 48rem;
}
.empty-title {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.4rem;
}
.empty-art {
  width: 100%;
  max-width: 240px;
  height: auto;
  display: block;
  margin-bottom: 0.75rem;
}
.empty-base {
  stroke: var(--axis);
  stroke-width: 1;
}
.empty-tick {
  stroke: var(--axis);
  stroke-width: 1;
}
.empty-line {
  fill: none;
  stroke: var(--ink-2);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.empty-dot {
  fill: var(--accent);
  stroke: var(--surface);
  stroke-width: 2;
}

/* ------------------------------------------------------------ results */

.toc ul {
  list-style: none;
  padding: 0;
}
.result {
  margin-top: 2.5rem;
}
.result-head {
  padding: 1.25rem;
}
.result-head h2 {
  margin-bottom: 0.25rem;
}
.result-head .links {
  margin: 0;
  font-size: 0.95rem;
}
.result-head .summary {
  margin-bottom: 0.6rem;
}
.result h3 {
  margin-top: 2.5rem;
}

/* ------------------------------------------------------------ tables */

.tablewrap {
  position: relative;
  overflow-x: auto;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
}
table.data {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
table.data th,
table.data td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--grid);
  vertical-align: top;
}
table.data thead th {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 600;
  border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}
table.data tbody th {
  font-weight: 600;
}
table.data tbody tr {
  transition: background-color 0.16s var(--ease);
}
table.data tbody tr:hover {
  background: var(--surface-2);
}
table.data .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-family: var(--mono);
  font-size: 0.85rem;
  white-space: nowrap;
}
table.data .note {
  display: block;
  font-weight: 400;
  font-size: 0.8rem;
  color: var(--muted);
}
table.metrics tbody th {
  min-width: 12rem;
}
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-2);
  background: var(--surface-2);
  border-radius: 3px;
  padding: 0.05rem 0.35rem;
  margin: 0.1rem 0;
}

/* ------------------------------------------------------------ charts */

.chart {
  margin: 1.25rem 0 1.5rem;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1rem 1.25rem 0.75rem;
}
.latest .chart {
  border: 0;
  padding: 0;
  background: transparent;
}
.chart figcaption {
  margin-bottom: 0.75rem;
}
.ctitle {
  display: block;
  font-weight: 650;
}
.cdesc {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
  max-width: 46rem;
}
.cbody {
  display: block;
}
.crow {
  display: grid;
  grid-template-columns: minmax(7rem, 13rem) 1fr 8rem;
  grid-template-areas: "label track value";
  align-items: center;
  gap: 0 1.25rem;
  padding: 0.35rem 0.5rem;
  margin: 0 -0.5rem;
  border-radius: 4px;
}
.crow[tabindex]:hover,
.crow[tabindex]:focus-visible {
  background: var(--surface-2);
}
.crow-axis {
  padding-top: 0;
  padding-bottom: 0;
}
.clabel {
  grid-area: label;
  min-width: 0;
}
.ctrack {
  grid-area: track;
  display: block;
  width: 100%;
  overflow: visible;
}
.cvalue {
  grid-area: value;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  text-align: right;
  white-space: nowrap;
}
.cvalue span {
  color: var(--muted);
}
.cname {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.3;
}
.cname.mono {
  font-weight: 500;
  font-size: 0.82rem;
}
.csub {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.35;
}
.ctrack text {
  font-family: var(--mono);
  font-size: 11px;
  fill: var(--muted);
}
.ctrack .grid {
  stroke: var(--grid);
  stroke-width: 1;
  shape-rendering: crispEdges;
}
.ctrack .ci {
  opacity: 0.32;
  transform-box: fill-box;
  transition: opacity 0.2s var(--ease);
}
.ctrack .rng,
.ctrack .span {
  transform-box: fill-box;
  transition: opacity 0.2s var(--ease);
}
.ctrack .est,
.ctrack .mk {
  transform-box: fill-box;
  transform-origin: center;
  transition: transform 0.2s var(--ease);
}
.crow {
  transition: background-color 0.16s var(--ease);
}
.crow[tabindex]:hover .ci,
.crow[tabindex]:focus-visible .ci {
  opacity: 0.55;
}
.crow[tabindex]:hover .rng,
.crow[tabindex]:focus-visible .rng {
  opacity: 1;
}
.crow[tabindex]:hover .est,
.crow[tabindex]:focus-visible .est,
.crow[tabindex]:hover .ctrack .mk,
.crow[tabindex]:focus-visible .ctrack .mk {
  transform: scale(1.3);
}
.ci.s1,
.est.s1,
.mk.s1 {
  fill: var(--s1);
}
.mk.s2 {
  fill: var(--s2);
}
.mk.s3 {
  fill: var(--s3);
}
.est,
.ctrack .mk {
  stroke: var(--surface);
  stroke-width: 2;
}
.legend .mk {
  stroke: none;
}
.ctrack .span {
  fill: var(--axis);
}
.rng {
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0.6;
}
.rng.s1 {
  stroke: var(--s1);
}
.rng.s2 {
  stroke: var(--s2);
}
.rng.s3 {
  stroke: var(--s3);
}

@media (max-width: 600px) {
  .crow {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "label value"
      "track track";
    gap: 0.2rem 0.75rem;
  }
  .crow-axis {
    grid-template-areas: "track track";
  }
  .crow-axis .clabel,
  .crow-axis .cvalue {
    display: none;
  }
  .chart {
    padding: 0.9rem 0.9rem 0.6rem;
  }
  .chart-range .crow {
    grid-template-columns: 1fr;
    grid-template-areas:
      "label"
      "track";
  }
  .chart-range .cvalue {
    display: none;
  }
}

.legend {
  list-style: none;
  padding: 0;
  margin: 0 0 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  font-size: 0.875rem;
  color: var(--ink-2);
}
.legend li {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.tableview {
  margin-top: 0.75rem;
  border-top: 1px solid var(--grid);
  padding-top: 0.5rem;
}
.tableview summary {
  list-style: none;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--accent);
  font-weight: 600;
  padding: 0.2rem 0;
  width: fit-content;
}
.tableview summary::-webkit-details-marker {
  display: none;
}
.tableview summary::before {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  margin-right: 0.45rem;
  border: 0.3rem solid transparent;
  border-left: 0.42rem solid currentColor;
  border-right: 0;
  vertical-align: 0.05rem;
  transition: transform 0.2s var(--ease);
}
.tableview[open] summary::before {
  transform: rotate(90deg);
}
.tableview summary:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}
.tableview table {
  margin-top: 0.5rem;
}

/* consistency grid */
.grid-table {
  border-collapse: separate;
  border-spacing: 2px;
  font-size: 0.85rem;
}
.grid-table th,
.grid-table td {
  padding: 0;
  text-align: center;
}
.grid-table tbody th {
  text-align: left;
  font-weight: 500;
  padding-right: 1rem;
  white-space: nowrap;
}
.grid-table .ag {
  font-weight: 650;
  text-align: left;
  padding: 0 0 0.2rem 2px;
  border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}
.grid-table .run,
.grid-table .task {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  font-weight: 400;
  padding: 0.2rem 0 0.3rem;
  text-align: center;
  white-space: nowrap;
}
.grid-table .task {
  text-align: left;
}
.grid-table td.rate {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.75rem;
  color: var(--ink-2);
  padding: 0 1.25rem 0 0.4rem;
}
.grid-table .run.rate {
  padding-right: 1.25rem;
}
.grid-table td.na {
  color: var(--muted);
  font-size: 0.75rem;
}
.run-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1;
}
.legend .run-mark {
  width: 20px;
  height: 20px;
  font-size: 0.75rem;
}
.run-mark.pass {
  background: var(--pass-bg);
  color: var(--pass-ink);
}
.run-mark.fail {
  background: var(--fail-bg);
  color: var(--fail-ink);
}
.run-mark {
  transition:
    transform 0.16s var(--ease),
    box-shadow 0.16s var(--ease);
}
.grid-table .run-mark:hover,
.grid-table .run-mark:focus-visible,
.hgrid .hg-cell:hover {
  box-shadow: 0 0 0 2px var(--ink);
  transform: scale(1.12);
}

/* definitions */
dl.defs {
  display: grid;
  grid-template-columns: minmax(10rem, 16rem) 1fr;
  gap: 0;
  max-width: 56rem;
  border-top: 1px solid var(--rule);
}
dl.defs > div {
  display: contents;
}
dl.defs dt,
dl.defs dd {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--grid);
  margin: 0;
}
dl.defs dt {
  font-weight: 650;
  padding-right: 1.5rem;
}
@media (max-width: 600px) {
  dl.defs {
    grid-template-columns: 1fr;
  }
  dl.defs dt {
    border-bottom: 0;
    padding-bottom: 0;
  }
}

/* timeline */
.timeline {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  max-width: 50rem;
  border-left: 2px solid var(--rule);
}
.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.25rem 1rem;
  padding: 0.6rem 0 0.6rem 1.25rem;
}
.timeline li::before {
  transition: transform 0.2s var(--ease);
  content: "";
  position: absolute;
  left: -6px;
  top: 1rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--bg);
}
.timeline li:hover::before {
  transform: scale(1.4);
}
.timeline .t {
  color: var(--accent);
  font-weight: 600;
  padding-top: 0.1rem;
}
@media (max-width: 600px) {
  .timeline li {
    grid-template-columns: 1fr;
  }
}

.status {
  font-family: var(--mono);
  font-size: 0.75rem;
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.1rem 0.4rem;
  white-space: nowrap;
}

/* ------------------------------------------------------------ ruler needle */

/* Where the reader is on the page, as a needle on the header ruler. Only in
   browsers with scroll-driven animations; elsewhere the ruler is plain. */
@supports (animation-timeline: scroll()) {
  @media (prefers-reduced-motion: no-preference) {
    .ruler::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(var(--accent), var(--accent)) 0 0 / 3px 100% no-repeat;
      animation: needle linear both;
      animation-timeline: scroll(root block);
    }
    @keyframes needle {
      from {
        background-position-x: 0%;
      }
      to {
        background-position-x: 100%;
      }
    }
  }
}

/* ------------------------------------------------------------ hero instrument */

.jump {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0;
  margin: 1.4rem 0 0;
}
.jump a {
  display: inline-block;
  font-size: 0.78rem;
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--rule);
  border-radius: 3px;
  color: var(--ink-2);
  background: var(--surface);
  text-decoration: none;
  transition:
    transform 0.16s var(--ease),
    border-color 0.16s var(--ease),
    color 0.16s var(--ease);
}
.jump a:hover,
.jump a:focus-visible {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--accent);
}

.instrument {
  margin: 0;
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding-bottom: 0.9rem;
}
.inst-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 2.6rem;
  padding: 0.4rem 0.5rem 0.4rem 0.9rem;
  border-bottom: 1px solid var(--rule);
  font-size: 0.72rem;
  color: var(--muted);
}
.inst-name {
  font-size: 1em;
}
.inst-light {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.instrument.running .inst-light {
  animation: blink 0.6s steps(2, jump-none) infinite;
}
@keyframes blink {
  to {
    background: var(--axis);
  }
}
.inst-replay {
  margin-left: auto;
  flex: none;
  white-space: nowrap;
  font: 600 0.72rem/1 var(--mono);
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.45rem 0.6rem;
  cursor: pointer;
  transition:
    border-color 0.16s var(--ease),
    color 0.16s var(--ease),
    transform 0.16s var(--ease);
}
.inst-replay:hover,
.inst-replay:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}
.inst-replay:active {
  transform: translateY(1px);
}
.instrument .tablewrap {
  padding: 0.6rem 0.9rem 0.1rem;
}
.hgrid {
  border-collapse: separate;
  border-spacing: 3px;
  margin: 0 -3px;
}
.hgrid th,
.hgrid td {
  padding: 0;
  text-align: center;
}
.hg-task {
  font: 400 0.74rem/1.2 var(--mono);
  color: var(--ink-2);
  text-align: left !important;
  padding-right: 0.8rem !important;
  white-space: nowrap;
  transition: color 0.16s var(--ease);
}
.hgrid tbody tr:hover .hg-task {
  color: var(--accent);
}
.hg-agent {
  font-size: 0.76rem;
  font-weight: 650;
  text-align: left !important;
  border-bottom: 1px solid var(--rule);
  padding: 0 0 0.15rem 2px !important;
  white-space: nowrap;
}
.hg-run,
.hg-runlabel {
  font: 400 0.64rem/1.6 var(--mono);
  color: var(--muted);
}
.hg-runlabel {
  text-align: right !important;
  padding-right: 0.8rem !important;
}
.hgrid td.gap {
  width: 0.7rem;
}
.hg-cell.run-mark {
  width: 24px;
  height: 24px;
  font-size: 0.75rem;
}
.hg-cell.na {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 1px dashed var(--axis);
  border-radius: 4px;
}
.hg-tallies {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.25rem 1rem;
  margin: 0.6rem 0.9rem 0;
  padding-top: 0.6rem;
  border-top: 1px solid var(--grid);
}
.hg-tally dt {
  font: 400 0.68rem/1.4 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.hg-tally dd {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-2);
}
.hg-num {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.hg-ci {
  display: block;
  font: 400 0.7rem/1.3 var(--mono);
  color: var(--muted);
}
.inst-cap {
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0.7rem 0.9rem 0;
  max-width: 34rem;
}
.run-mark.mini {
  width: 15px;
  height: 15px;
  font-size: 0.6rem;
  border-radius: 3px;
  vertical-align: -3px;
  margin-left: 0.2rem;
}

/* The page-load moment: cells start hollow (still visible, outlined) and
   fill in run order. Replaying swaps the keyframe name to restart it. */
@media (prefers-reduced-motion: no-preference) {
  .hgrid[data-run="a"] .hg-cell.run-mark,
  .hgrid[data-run="b"] .hg-cell.run-mark {
    animation: hg-fill-a 0.42s var(--ease) backwards;
    animation-delay: calc(var(--i) * 30ms + 250ms);
  }
  .hgrid[data-run="b"] .hg-cell.run-mark {
    animation-name: hg-fill-b;
  }
}
@keyframes hg-fill-a {
  0% {
    background-color: transparent;
    color: transparent;
    box-shadow: inset 0 0 0 1px var(--axis);
    transform: scale(0.8);
  }
  60% {
    transform: scale(1.12);
  }
  100% {
    transform: scale(1);
  }
}
@keyframes hg-fill-b {
  0% {
    background-color: transparent;
    color: transparent;
    box-shadow: inset 0 0 0 1px var(--axis);
    transform: scale(0.8);
  }
  60% {
    transform: scale(1.12);
  }
  100% {
    transform: scale(1);
  }
}

@media (max-width: 480px) {
  .instrument .tablewrap {
    padding-left: 0.6rem;
    padding-right: 0.6rem;
  }
  .hg-task {
    font-size: 0.66rem;
    padding-right: 0.45rem !important;
  }
  .hg-runlabel {
    padding-right: 0.45rem !important;
  }
  .hg-cell.run-mark,
  .hg-cell.na {
    width: 20px;
    height: 20px;
    font-size: 0.66rem;
  }
  .hgrid td.gap {
    width: 0.4rem;
  }
  .hg-tallies,
  .inst-cap {
    margin-left: 0.6rem;
    margin-right: 0.6rem;
  }
}

/* ------------------------------------------------------------ tool sections */

.tools-wrap > p {
  max-width: 48rem;
}
.toolsec {
  position: relative;
  display: grid;
  gap: 1.25rem 2.5rem;
  align-items: start;
  margin-top: 2.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule);
  border-radius: 2px;
}
@media (min-width: 900px) {
  .toolsec {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }
  .toolsec.flip .toolsec-text {
    order: 2;
  }
}
/* A ruler segment on the top rule that extends when the section is hovered
   or holds focus. */
.toolsec::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 3.5rem;
  height: 3px;
  background: var(--accent);
  transition: width 0.4s var(--ease);
}
.toolsec:hover::before,
.toolsec:focus-within::before {
  width: 9rem;
}
.toolsec:target::before {
  width: 100%;
  background: var(--signal);
}
@media (prefers-reduced-motion: no-preference) {
  .toolsec:target {
    animation: target-flash 2.4s var(--ease);
  }
}
@keyframes target-flash {
  0%,
  35% {
    background: var(--hl);
    box-shadow: 0 0 0 0.75rem var(--hl);
  }
  100% {
    background: transparent;
    box-shadow: 0 0 0 0.75rem transparent;
  }
}
.toolsec .eyebrow {
  margin-bottom: 0.3rem;
}
.tool-name {
  font-size: clamp(1.35rem, 1.2rem + 0.6vw, 1.7rem);
  margin: 0 0 0.5rem;
}
.tool-name .anchor {
  color: var(--ink);
  text-decoration: none;
}
.tool-name .mono {
  font-size: 1em;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.anchor-mark {
  margin-left: 0.4rem;
  color: var(--muted);
  font-weight: 400;
  opacity: 0;
  transition: opacity 0.16s var(--ease);
}
.tool-name .anchor:hover .anchor-mark,
.tool-name .anchor:focus-visible .anchor-mark,
.toolsec:target .anchor-mark {
  opacity: 1;
}
.outcome {
  font-size: 1.08rem;
  color: var(--ink-2);
  max-width: 34rem;
}
ul.facts {
  list-style: none;
  padding: 0;
  max-width: 34rem;
}
ul.facts li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.45rem;
  font-size: 0.95rem;
}
ul.facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.75rem;
  height: 2px;
  background: var(--accent);
}
.toolsec .tool-role {
  font-size: 0.875rem;
  max-width: 34rem;
}
.tool-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

/* plain-language summary and metric key next to the numbers */
.summary {
  max-width: 48rem;
  margin: 0.6rem 0 0;
}
.key {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(20rem, 100%), 1fr));
  gap: 0.5rem 1.25rem;
  margin: 0 0 1rem;
  font-size: 0.85rem;
  color: var(--ink-2);
}
.key dt {
  font: 600 0.75rem/1.4 var(--mono);
  color: var(--ink);
}
.key dd {
  margin: 0.1rem 0 0;
}
.jump-label {
  margin: 1.4rem 0 0;
  color: var(--muted);
}
.jump-label + .jump {
  margin-top: 0.5rem;
}
.cmd-then {
  max-width: 34rem;
  margin: -0.5rem 0 1.1rem;
  color: var(--ink-2);
}
.cmd-brew,
.cmd-plugin {
  max-width: 34rem;
  margin: -0.6rem 0 1.1rem;
  color: var(--ink-2);
}
.next {
  margin-top: 3rem;
}

/* command block with copy button */
.cmd {
  position: relative;
  margin: 0 0 1.1rem;
  max-width: 34rem;
}
.cmd pre {
  margin: 0;
  padding: 0.75rem 4.8rem 0.75rem 0.9rem;
  background: var(--term-bg);
  color: var(--term-ink);
  border: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.cmd code::before {
  content: "$ ";
  color: var(--term-prompt);
  user-select: none;
  -webkit-user-select: none;
}
.copy {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  font: 600 0.72rem/1 var(--mono);
  color: var(--term-ink);
  background: transparent;
  border: 1px solid rgba(231, 238, 235, 0.3);
  border-radius: 4px;
  padding: 0.45rem 0.6rem;
  min-width: 4.2rem;
  cursor: pointer;
  transition:
    border-color 0.16s var(--ease),
    background-color 0.16s var(--ease),
    color 0.16s var(--ease);
}
.copy:hover,
.copy:focus-visible {
  border-color: var(--term-ink);
  background: rgba(231, 238, 235, 0.08);
}
.copy.done {
  color: #cdea45;
  border-color: #cdea45;
}

/* demo recordings */
.demo {
  margin: 0;
  min-width: 0;
}
.demo-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  min-height: 2.4rem;
  padding: 0.3rem 0.4rem 0.3rem 0.8rem;
  background: var(--term-bar);
  color: var(--term-muted);
  font-size: 0.74rem;
  border-radius: var(--radius) var(--radius) 0 0;
}
.demo-bar .mono {
  font-size: 1em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.demo-toggle {
  flex: none;
  font: 600 0.7rem/1 var(--mono);
  color: var(--term-ink);
  background: transparent;
  border: 1px solid rgba(231, 238, 235, 0.3);
  border-radius: 4px;
  padding: 0.4rem 0.6rem;
  min-width: 3.6rem;
  cursor: pointer;
  transition:
    border-color 0.16s var(--ease),
    background-color 0.16s var(--ease);
}
.demo-toggle:hover,
.demo-toggle:focus-visible {
  border-color: var(--term-ink);
  background: rgba(231, 238, 235, 0.08);
}
.demo-frame {
  position: relative;
  overflow: hidden;
  background: var(--term-frame);
  border-radius: 0 0 var(--radius) var(--radius);
  transition:
    transform 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
}
.demo-frame img {
  display: block;
  width: 100%;
  height: auto;
}
.demo:hover .demo-frame {
  box-shadow: 0 0 0 1px var(--axis);
}
.demo-frame::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 100%;
  background: var(--term-prompt);
  transform: scaleX(0);
  transform-origin: left;
}
.demo.loading .demo-frame::after {
  animation: load-bar 1.2s var(--ease) infinite;
}
@keyframes load-bar {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}
.demo figcaption {
  margin-top: 0.5rem;
}

/* empty states breathe a little */
@media (prefers-reduced-motion: no-preference) {
  .empty-dot {
    transform-box: fill-box;
    transform-origin: center;
    animation: pulse 2.4s ease-in-out infinite;
  }
}
@keyframes pulse {
  50% {
    transform: scale(1.35);
  }
}

/* ------------------------------------------------------------ view transitions */

@view-transition {
  navigation: auto;
}
::view-transition-old(root) {
  animation: vt-out 0.16s var(--ease) both;
}
::view-transition-new(root) {
  animation: vt-in 0.3s var(--ease) both;
}
::view-transition-group(nav-current) {
  animation-duration: 0.35s;
  animation-timing-function: var(--ease);
}
@keyframes vt-out {
  to {
    opacity: 0;
  }
}
@keyframes vt-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
}

/* ------------------------------------------------------------ tooltip */

.tip {
  position: fixed;
  z-index: 20;
  pointer-events: none;
  background: var(--tip-bg);
  color: var(--tip-ink);
  padding: 0.5rem 0.65rem;
  border-radius: 4px;
  font-size: 0.8rem;
  line-height: 1.4;
  max-width: min(22rem, calc(100vw - 2rem));
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
}
.tip strong {
  display: block;
  font-family: var(--mono);
  font-size: 0.85rem;
  white-space: pre-line;
}
.tip span {
  display: block;
  opacity: 0.8;
}

/* ------------------------------------------------------------ footer */

.site-footer {
  border-top: 1px solid var(--rule);
  background: var(--surface);
  font-size: 0.875rem;
  color: var(--muted);
}
.footer-inner {
  padding-top: 1.25rem;
  padding-bottom: 1.5rem;
}
.footer-inner p {
  margin: 0 0 0.4rem;
}

@media (forced-colors: active) {
  .run-mark,
  .badge.pilot,
  .site-header nav a[aria-current="page"] {
    border: 1px solid CanvasText;
  }
}


@media (max-width: 480px) {
  .grid-table .rate {
    display: none;
  }
  .grid-table .run-mark {
    width: 22px;
    height: 22px;
  }
  .grid-table tbody th {
    padding-right: 0.5rem;
  }
  .grid-table tbody th .mono {
    font-size: 0.72rem;
  }
  .grid-table .ag {
    font-size: 0.8rem;
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  @view-transition {
    navigation: none;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* ------------------------------------------------------------ findings */

.post {
  max-width: 48rem;
}
.post > p,
.post > ul {
  max-width: 44rem;
}
.post h1 {
  max-width: 28ch;
}
.post h2 {
  margin-top: 2.6rem;
}
.post .byline {
  margin: 0.4rem 0 0;
}
.post .lede {
  margin-top: 1.5rem;
}
.post .chart,
.post .tablewrap {
  margin: 1.4rem 0;
}
.post .cmd {
  max-width: 44rem;
}
.findings-list li {
  margin-bottom: 1rem;
}
.finding-link {
  max-width: 48rem;
}
@media (max-width: 520px) {
  table.post-table th,
  table.post-table td {
    padding: 0.45rem 0.5rem;
  }
  table.post-table thead th {
    white-space: normal;
  }
  table.post-table tbody th {
    min-width: 0;
  }
  table.post-table .num {
    font-size: 0.8rem;
    white-space: normal;
  }
}
.grid-stacked + .grid-stacked {
  margin-top: 1rem;
}