/* MouseTestLab — "measurement bench" design system
   Palette: lab paper, navy ink, cobalt signal; pass/warn/fail reserved for verdicts. */

:root {
  --paper: #eef2f6;
  --panel: #ffffff;
  --ink: #15233f;
  --ink-2: #4a5873;
  --line: #c9d3df;
  --line-soft: #dde4ec;
  --accent: #2f5bea;
  --accent-ink: #ffffff;
  --accent-soft: #e3eafd;
  --grid: rgba(47, 91, 234, 0.07);
  --grid-major: rgba(47, 91, 234, 0.14);
  --pass: #148a5b;
  --pass-soft: #e2f3ea;
  --warn: #b7790a;
  --warn-soft: #faf0dc;
  --fail: #c93a2b;
  --fail-soft: #fbe7e4;
  --zone: #f4f7fa;

  --font-display: "Avenir Next", "Segoe UI Variable Display", "Segoe UI", "Helvetica Neue", system-ui, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.3125rem;
  --step-2: 1.6875rem;
  --step-3: 2.125rem;
  --step-4: 2.75rem;

  --r-outer: 16px;
  --r-inner: 8px;
  --wrap: 1120px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0e1729;
    --panel: #15213a;
    --ink: #e6ecf5;
    --ink-2: #9daac0;
    --line: #2b3b58;
    --line-soft: #22314c;
    --accent: #7c9bff;
    --accent-ink: #0e1729;
    --accent-soft: #1f2e52;
    --grid: rgba(124, 155, 255, 0.06);
    --grid-major: rgba(124, 155, 255, 0.12);
    --pass: #4cc38a;
    --pass-soft: #163a2c;
    --warn: #e0a83a;
    --warn-soft: #3a2f16;
    --fail: #f07462;
    --fail-soft: #401e1b;
    --zone: #1b2944;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0e1729;
  --panel: #15213a;
  --ink: #e6ecf5;
  --ink-2: #9daac0;
  --line: #2b3b58;
  --line-soft: #22314c;
  --accent: #7c9bff;
  --accent-ink: #0e1729;
  --accent-soft: #1f2e52;
  --grid: rgba(124, 155, 255, 0.06);
  --grid-major: rgba(124, 155, 255, 0.12);
  --pass: #4cc38a;
  --pass-soft: #163a2c;
  --warn: #e0a83a;
  --warn-soft: #3a2f16;
  --fail: #f07462;
  --fail-soft: #401e1b;
  --zone: #1b2944;
  color-scheme: dark;
}

[hidden] {
  display: none !important;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--step-0) / 1.6 var(--font-body);
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.skip {
  position: absolute;
  left: -999px;
}
.skip:focus {
  left: 16px;
  top: 12px;
  background: var(--panel);
  padding: 8px 12px;
  z-index: 10;
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font: 700 1.2rem/1 var(--font-display);
  letter-spacing: -0.01em;
}
.brand svg {
  width: 32px;
  height: 32px;
  flex: none;
}
.brand b {
  font-weight: 700;
  color: var(--accent);
}
.nav {
  margin-left: auto;
  display: flex;
  gap: 4px;
  align-items: center;
}
.nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: var(--step--1);
  padding: 8px 10px;
  border-radius: var(--r-inner);
}
.nav a:hover {
  color: var(--ink);
  background: var(--zone);
}
.nav a[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}
.theme-toggle {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-2);
  border-radius: var(--r-inner);
  width: 36px;
  height: 36px;
  cursor: pointer;
  display: grid;
  place-items: center;
}
.menu-toggle {
  display: none;
}

@media (max-width: 860px) {
  .menu-toggle {
    display: grid;
    margin-left: auto;
  }
  .nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    z-index: 5;
  }
  .nav.is-open {
    display: flex;
  }
  .site-header .wrap {
    position: relative;
  }
}

/* ---------- Page head ---------- */

.crumbs {
  font-size: var(--step--1);
  color: var(--ink-2);
  margin: 20px 0 0;
}
.crumbs a {
  color: var(--ink-2);
}
.page-head {
  position: relative;
  isolation: isolate;
  padding: 28px 0 24px;
}
html,
body {
  overflow-x: clip;
}
/* faint measuring grid that fades out to the left, behind the title */
.page-head::before {
  content: "";
  position: absolute;
  inset: 0 calc(50% - 50vw) 0 35%;
  background-image: linear-gradient(var(--grid-major) 1px, transparent 1px), linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 50px 50px, 50px 50px, 10px 10px, 10px 10px;
  -webkit-mask-image: radial-gradient(ellipse 55% 75% at 55% 45%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 55% 75% at 55% 45%, #000 20%, transparent 75%);
  pointer-events: none;
  z-index: -1;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 5px 12px 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--accent);
  font: 600 0.78rem/1 var(--font-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.eyebrow-tick {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pass);
  box-shadow: 0 0 0 3px var(--pass-soft);
}
.page-head h1 {
  font: 700 var(--step-4) / 1.08 var(--font-display);
  letter-spacing: -0.025em;
  margin: 0;
  max-width: 24ch;
  text-wrap: balance;
}
.h1-key {
  color: var(--accent);
}
.h1-note {
  color: var(--ink-2);
  font-weight: 600;
  font-size: 0.62em;
  letter-spacing: -0.01em;
  margin-left: 0.3em;
  white-space: nowrap;
}
/* ruler: accent bar plus tick marks */
.h1-rule {
  display: block;
  width: 168px;
  height: 10px;
  margin: 16px 0 16px;
  background: linear-gradient(var(--accent), var(--accent)) left bottom / 56px 3px no-repeat,
    repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 8px) left bottom / 100% 6px no-repeat,
    repeating-linear-gradient(90deg, var(--ink-2) 0 1px, transparent 1px 40px) left bottom / 100% 10px no-repeat;
  opacity: 0.9;
}
.lede {
  color: var(--ink-2);
  font-size: var(--step-1);
  line-height: 1.5;
  margin: 0;
  max-width: 62ch;
}
.lede strong {
  color: var(--ink);
}
.trust {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--ink);
}
.trust li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.trust svg {
  color: var(--pass);
  background: var(--pass-soft);
  border-radius: 50%;
  padding: 2px;
  width: 18px;
  height: 18px;
}

@media (max-width: 640px) {
  .page-head h1 {
    font-size: var(--step-3);
  }
  .lede {
    font-size: var(--step-0);
  }
}

/* ---------- The bench: the one memorable element ---------- */

.bench {
  position: relative;
  background-color: var(--panel);
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 40px 40px, 40px 40px, 8px 8px, 8px 8px;
  background-position: -1px -1px;
  border: 1px solid var(--line);
  border-radius: var(--r-outer);
  padding: 26px;
}
/* calibration ticks in the corners */
.bench::before,
.bench::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border-color: var(--accent);
  border-style: solid;
  pointer-events: none;
}
.bench::before {
  top: 7px;
  left: 7px;
  border-width: 2px 0 0 2px;
}
.bench::after {
  bottom: 7px;
  right: 7px;
  border-width: 0 2px 2px 0;
}

.bench-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.bench-bar .spacer {
  flex: 1;
}

/* readouts: numbers are the hero */
.readouts {
  display: grid;
  grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr));
  border-top: 1px solid var(--line);
  margin-top: 16px;
}
.readout {
  padding: 12px 4px 2px;
}
.readout + .readout {
  border-left: 1px solid var(--line-soft);
  padding-left: 16px;
}
.readout .num {
  display: block;
  font: 650 clamp(2rem, 5vw, 3.25rem) / 1 var(--font-display);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.readout .lbl {
  display: block;
  color: var(--ink-2);
  font-size: var(--step--1);
  margin-top: 6px;
}

/* ---------- Controls ---------- */

.seg {
  display: inline-flex;
  flex-wrap: wrap;
  border: 1px solid var(--line);
  border-radius: var(--r-inner);
  background: var(--panel);
  overflow: hidden;
}
.seg button {
  border: 0;
  background: transparent;
  color: var(--ink-2);
  padding: 8px 12px;
  font: 500 var(--step--1) / 1 var(--font-body);
  cursor: pointer;
  font-variant-numeric: tabular-nums;
}
.seg button + button {
  border-left: 1px solid var(--line-soft);
}
.seg button[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-ink);
}
.seg button:hover:not([aria-pressed="true"]) {
  background: var(--zone);
  color: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: var(--r-inner);
  padding: 9px 14px;
  font: 500 var(--step--1) / 1 var(--font-body);
  cursor: pointer;
  text-decoration: none;
}
.btn:hover:not(:disabled) {
  border-color: var(--ink-2);
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover:not(:disabled) {
  filter: brightness(1.08);
  border-color: var(--accent);
}

.field {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--step--1);
  color: var(--ink-2);
}
.field input[type="number"] {
  width: 4.5em;
  padding: 7px 8px;
  border: 1px solid var(--line);
  border-radius: var(--r-inner);
  background: var(--panel);
  color: var(--ink);
  font: inherit;
}
.field input[type="range"] {
  accent-color: var(--accent);
}

/* ---------- Click pads ---------- */

.pad {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 300px;
  border: 2px dashed var(--line);
  border-radius: var(--r-inner);
  background: color-mix(in srgb, var(--panel) 70%, transparent);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  overflow: hidden;
  text-align: center;
  padding: 24px;
  transition: border-color 0.15s, background-color 0.15s;
}
.pad:hover {
  border-color: var(--accent);
}
.pad-label {
  font: 600 var(--step-2) / 1.2 var(--font-display);
  max-width: 24ch;
  pointer-events: none;
}
.pad.is-running {
  border-style: solid;
  border-color: var(--accent);
  background: var(--accent-soft);
}
.pad.is-done {
  border-style: solid;
}
.pad.is-ok {
  animation: flash-ok 0.25s;
}
.pad.is-bad {
  animation: flash-bad 0.5s;
}
@keyframes flash-ok {
  from {
    background: var(--pass-soft);
  }
}
@keyframes flash-bad {
  0%,
  60% {
    background: var(--fail-soft);
    border-color: var(--fail);
  }
}
.ripple {
  position: absolute;
  width: 14px;
  height: 14px;
  margin: -7px 0 0 -7px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  pointer-events: none;
  animation: ripple 0.5s ease-out forwards;
}
@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

@media (max-width: 640px) {
  .pad {
    min-height: 240px;
  }
  .bench {
    padding: 14px;
  }
}

/* ---------- Mouse diagram (home) ---------- */

.mouse-lab {
  display: grid;
  grid-template-columns: minmax(220px, 300px) 1fr;
  gap: 28px;
  align-items: start;
  cursor: crosshair;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}
.mouse-svg {
  width: 100%;
  max-width: 260px;
  margin: 0 auto;
  display: block;
}
.mouse-svg .body {
  fill: var(--panel);
  stroke: var(--ink);
  stroke-width: 2.5;
}
.mouse-svg .zone {
  fill: var(--zone);
  stroke: var(--ink);
  stroke-width: 1.5;
  transition: fill 0.12s;
}
.mouse-svg .arrow {
  fill: var(--ink-2);
  transition: fill 0.12s;
}
.mouse-svg .is-tested.zone {
  fill: var(--pass-soft);
  stroke: var(--pass);
}
.mouse-svg .is-tested.arrow {
  fill: var(--pass);
}
.mouse-svg .is-suspect.zone {
  fill: var(--warn-soft);
  stroke: var(--warn);
}
.mouse-svg .is-fault.zone {
  fill: var(--fail-soft);
  stroke: var(--fail);
}
.mouse-svg .is-down.zone {
  fill: var(--accent);
}
.mouse-svg .is-pulse {
  animation: pulse 0.25s;
}
@keyframes pulse {
  from {
    fill: var(--accent);
  }
}

.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.checklist li {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 9px 12px;
  border-radius: var(--r-inner);
  background: color-mix(in srgb, var(--panel) 80%, transparent);
}
.checklist .mark {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--line);
}
.checklist li.is-done .mark {
  background: var(--pass);
  border-color: var(--pass);
  box-shadow: inset 0 0 0 3px var(--panel);
}
.checklist li.is-fault .mark {
  background: var(--fail);
  border-color: var(--fail);
}
.checklist li.is-suspect .mark {
  background: var(--warn);
  border-color: var(--warn);
}
.checklist .count {
  font-variant-numeric: tabular-nums;
  color: var(--ink-2);
  font-size: var(--step--1);
}
.progress {
  font: 650 var(--step-1) / 1.2 var(--font-display);
  margin: 0 0 10px;
  font-variant-numeric: tabular-nums;
}
.hint {
  color: var(--ink-2);
  font-size: var(--step--1);
  margin: 12px 0 0;
}
@media (max-width: 720px) {
  .mouse-lab {
    grid-template-columns: 1fr;
  }
  .mouse-svg {
    max-width: 180px;
  }
}

/* ---------- Results ---------- */

.verdict {
  border: 1px solid var(--line);
  border-left: 5px solid var(--accent);
  background: var(--panel);
  border-radius: var(--r-inner);
  padding: 16px 18px;
  margin-top: 16px;
}
.verdict h2,
.verdict .verdict-title {
  font: 700 var(--step-1) / 1.25 var(--font-display);
  margin: 0 0 4px;
}
.verdict p {
  margin: 0;
  color: var(--ink-2);
}
.verdict[data-tone="pass"] {
  border-left-color: var(--pass);
  background: var(--pass-soft);
}
.verdict[data-tone="warn"] {
  border-left-color: var(--warn);
  background: var(--warn-soft);
}
.verdict[data-tone="fail"] {
  border-left-color: var(--fail);
  background: var(--fail-soft);
}
.verdict-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.result {
  margin-top: 16px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 16px;
}
.result-main,
.result-side {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-inner);
  padding: 18px;
}
.score {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.score .num {
  font: 700 clamp(3rem, 9vw, 5rem) / 0.95 var(--font-display);
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
}
.score .unit {
  font: 600 var(--step-1) / 1 var(--font-display);
  color: var(--ink-2);
}
.tier {
  display: inline-block;
  margin-left: auto;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 999px;
  padding: 4px 12px;
  font-weight: 600;
  font-size: var(--step--1);
}
.tier[data-tone="fail"] {
  border-color: var(--fail);
  color: var(--fail);
}
.formula {
  color: var(--ink-2);
  font-size: var(--step--1);
  margin: 10px 0 14px;
}
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 14px;
}
.stats dt {
  color: var(--ink-2);
  font-size: var(--step--1);
}
.stats dd {
  margin: 2px 0 0;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
canvas.chart {
  width: 100%;
  height: 140px;
  display: block;
}
.result-side h3 {
  font: 650 var(--step-0) / 1.3 var(--font-display);
  margin: 0 0 8px;
}
.top-list {
  list-style: none;
  counter-reset: top;
  margin: 0;
  padding: 0;
}
.top-list li {
  counter-increment: top;
  display: grid;
  grid-template-columns: 2em 1fr auto;
  padding: 6px 0;
  border-bottom: 1px solid var(--line-soft);
  font-variant-numeric: tabular-nums;
}
.top-list li::before {
  content: counter(top);
  color: var(--ink-2);
}
.top-list li.is-new {
  color: var(--accent);
  font-weight: 650;
}
.top-list li.is-empty {
  display: block;
  color: var(--ink-2);
  font-size: var(--step--1);
  border: 0;
}
.top-list li.is-empty::before {
  content: none;
}
.top-list time {
  color: var(--ink-2);
  font-size: var(--step--1);
}
@media (max-width: 780px) {
  .result {
    grid-template-columns: 1fr;
  }
}

/* ---------- Stat columns + tables (double click) ---------- */

.btn-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.btn-col {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-inner);
  padding: 12px 14px;
}
.btn-col h3 {
  margin: 0 0 6px;
  font: 650 var(--step-0) / 1.2 var(--font-display);
}
.btn-col dl {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 8px;
  font-size: var(--step--1);
}
.btn-col dt {
  color: var(--ink-2);
}
.btn-col dd {
  margin: 0;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.btn-col.is-suspect {
  border-color: var(--fail);
  background: var(--fail-soft);
}
@media (max-width: 560px) {
  .btn-cols {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-inner);
  padding: 16px 18px;
  margin-top: 16px;
}
.panel h3 {
  font: 650 var(--step-0) / 1.3 var(--font-display);
  margin: 0 0 8px;
}
.panel .sub {
  color: var(--ink-2);
  font-size: var(--step--1);
  margin: -4px 0 10px;
}
.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
}
@media (max-width: 780px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

.log-wrap {
  max-height: 260px;
  overflow: auto;
}
table.log {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--step--1);
  font-variant-numeric: tabular-nums;
}
table.log th {
  text-align: left;
  color: var(--ink-2);
  font-weight: 500;
  border-bottom: 1px solid var(--line);
  padding: 6px 8px;
  position: sticky;
  top: 0;
  background: var(--panel);
}
table.log td {
  border-bottom: 1px solid var(--line-soft);
  padding: 5px 8px;
}
table.log tr.is-suspect td {
  color: var(--fail);
  font-weight: 600;
}

.hold-bar {
  --p: 0;
  height: 6px;
  border-radius: 3px;
  background: var(--line-soft);
  margin-top: 14px;
  overflow: hidden;
  position: relative;
  width: min(320px, 80%);
}
.hold-bar::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform-origin: left;
  transform: scaleX(var(--p));
}

details.more {
  margin-top: 16px;
}
details.more summary {
  cursor: pointer;
  color: var(--ink-2);
  font-size: var(--step--1);
}

.note {
  border: 1px solid var(--warn);
  background: var(--warn-soft);
  border-radius: var(--r-inner);
  padding: 10px 14px;
  margin-bottom: 14px;
  font-size: var(--step--1);
}

/* ---------- Below the tool ---------- */

.section {
  margin-top: 56px;
}
.section-title {
  font: 700 var(--step-2) / 1.2 var(--font-display);
  letter-spacing: -0.015em;
  margin: 0 0 16px;
}

.tool-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 40px;
}
.tool-index li {
  border-top: 1px solid var(--line);
}
.tool-index a {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 4px 14px;
  padding: 14px 0;
  text-decoration: none;
  color: var(--ink);
}
.tool-index .ico {
  grid-row: span 2;
  width: 36px;
  height: 36px;
  border-radius: var(--r-inner);
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
}
.tool-index .ico svg {
  width: 20px;
  height: 20px;
}
.tool-index strong {
  font: 650 var(--step-0) / 1.3 var(--font-display);
}
.tool-index span.desc {
  color: var(--ink-2);
  font-size: var(--step--1);
}
.tool-index a:hover strong {
  color: var(--accent);
}
.tool-index .soon {
  color: var(--ink-2);
  font-size: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1px 7px;
  margin-left: 6px;
  font-weight: 500;
}
@media (max-width: 680px) {
  .tool-index {
    grid-template-columns: 1fr;
  }
}

.prose {
  max-width: 68ch;
}
.prose h2 {
  font: 700 var(--step-2) / 1.2 var(--font-display);
  letter-spacing: -0.015em;
  margin: 2.2em 0 0.5em;
}
.prose h3 {
  font: 650 var(--step-1) / 1.3 var(--font-display);
  margin: 1.6em 0 0.4em;
}
.prose p,
.prose li {
  color: var(--ink);
}
.prose table {
  border-collapse: collapse;
  width: 100%;
  font-size: var(--step--1);
  margin: 1em 0;
  background: var(--panel);
}
.prose th,
.prose td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
}
.prose th {
  background: var(--zone);
}

.faq details p {
  max-width: 75ch;
}
.faq details {
  border-top: 1px solid var(--line);
  padding: 14px 0;
}
.faq details:last-child {
  border-bottom: 1px solid var(--line);
}
.faq summary {
  cursor: pointer;
  font: 650 var(--step-0) / 1.4 var(--font-display);
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary::after {
  content: "+";
  color: var(--accent);
  font-size: 1.3em;
  line-height: 1;
}
.faq details[open] summary::after {
  content: "–";
}
.faq details p {
  margin: 10px 0 0;
  color: var(--ink-2);
}

.ad-slot {
  margin: 40px 0;
}

/* ---------- Footer ---------- */

.site-footer {
  margin-top: 80px;
  border-top: 1px solid var(--line);
  background: var(--panel);
  padding: 32px 0 40px;
  font-size: var(--step--1);
  color: var(--ink-2);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 32px;
}
.footer-links {
  columns: 3 140px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-links li {
  margin-bottom: 6px;
}
.footer-links a {
  color: var(--ink-2);
  text-decoration: none;
}
.footer-links a:hover {
  color: var(--accent);
}
@media (max-width: 680px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* Fullscreen bench */
.bench:fullscreen {
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-radius: 0;
  padding: 40px;
}
.bench:fullscreen .pad {
  flex: 1;
}

/* Mobile: get the tool into the first screen */
@media (max-width: 640px) {
  .page-head {
    padding: 14px 0 14px;
  }
  .page-head::before {
    inset: 0 -16px 0 30%;
  }
  .eyebrow {
    margin-bottom: 10px;
    font-size: 0.7rem;
  }
  .h1-rule {
    margin: 10px 0;
    width: 120px;
  }
  .trust {
    margin-top: 10px;
    gap: 6px 12px;
    font-size: 0.8rem;
  }
  .trust li:nth-child(3) {
    display: none;
  }
  .page-head h1 {
    font-size: 1.75rem;
    margin-bottom: 6px;
  }
  .lede {
    font-size: 0.975rem;
  }
  .crumbs {
    margin-top: 12px;
  }
  #fullscreen {
    display: none;
  }
  .seg button {
    padding: 7px 9px;
  }
  .bench-bar {
    gap: 8px;
    margin-bottom: 12px;
  }
  .pad {
    min-height: 200px;
  }
  .mouse-svg {
    max-width: 140px;
  }
}

/* =========================================================
   Content components (below the tool)
   ========================================================= */

.content-grid {
  display: block;
}
.content {
  min-width: 0;
}
/* On-this-page: a horizontal jump bar at full width, so the content keeps the tool's width */
.toc {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin: 0 0 48px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: var(--step--1);
}
.toc-title {
  color: var(--ink-2);
  margin: 0;
}
.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.toc a {
  display: block;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--ink);
  text-decoration: none;
  line-height: 1.3;
}
.toc a:hover {
  border-color: var(--accent);
  color: var(--accent);
}
/* Long-form text keeps a readable measure; structured components use the full width */
.cs > p,
.cs > .callout {
  max-width: 75ch;
}

/* Section: heading sits on a ruler line, with a cobalt measured segment */
.cs {
  margin-bottom: 72px;
  scroll-margin-top: 16px;
}
.cs-title {
  position: relative;
  font: 700 var(--step-2) / 1.2 var(--font-display);
  letter-spacing: -0.015em;
  margin: 0 0 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.cs-title::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 56px;
  height: 3px;
  background: var(--accent);
}
.cs-title a {
  color: inherit;
  text-decoration: none;
}
.cs p {
  margin: 0 0 1em;
}
.cs h3 {
  font: 650 var(--step-0) / 1.3 var(--font-display);
  margin: 0 0 4px;
}

/* Steps: a real sequence, so it is numbered */
.steps {
  list-style: none;
  counter-reset: step;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-outer);
  background: var(--panel);
  overflow: hidden;
}
.step {
  counter-increment: step;
  padding: 0 20px 20px;
}
.step + .step {
  border-left: 1px solid var(--line-soft);
}
.step-fig {
  position: relative;
  height: 112px;
  margin: 0 -20px 16px;
  display: grid;
  place-items: center;
  color: var(--accent);
  background-color: var(--paper);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 8px 8px;
  border-bottom: 1px solid var(--line-soft);
}
.step-fig svg {
  width: 52px;
  height: 52px;
}
.step-fig::before {
  content: counter(step);
  position: absolute;
  top: 10px;
  left: 12px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--panel);
  font: 700 0.8rem/24px var(--font-display);
  text-align: center;
}
.step p {
  color: var(--ink-2);
  font-size: var(--step--1);
  margin: 0;
}
@media (max-width: 720px) {
  .steps {
    grid-template-columns: 1fr;
  }
  .step + .step {
    border-left: 0;
    border-top: 1px solid var(--line-soft);
  }
  .step {
    display: grid;
    grid-template-columns: 88px 1fr;
    column-gap: 16px;
    padding: 16px;
  }
  .step-fig {
    grid-row: span 2;
    height: 88px;
    margin: 0;
    border: 1px solid var(--line-soft);
    border-radius: var(--r-inner);
  }
  .step-fig svg {
    width: 40px;
    height: 40px;
  }
}

/* Outcomes: same tones as the verdict box */
.outcomes {
  display: grid;
  gap: 10px;
  margin: 0 0 20px;
}
.outcome {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-inner);
  padding: 14px 18px 14px 14px;
}
.outcome-swatch {
  border-radius: 6px;
  height: 100%;
  min-height: 56px;
  display: grid;
  place-items: center;
  font: 700 var(--step--1) / 1 var(--font-display);
  font-variant-numeric: tabular-nums;
}
.outcome[data-tone="pass"] .outcome-swatch {
  background: var(--pass-soft);
  color: var(--pass);
  box-shadow: inset 0 0 0 1.5px var(--pass);
}
.outcome[data-tone="warn"] .outcome-swatch {
  background: var(--warn-soft);
  color: var(--warn);
  box-shadow: inset 0 0 0 1.5px var(--warn);
}
.outcome[data-tone="fail"] .outcome-swatch {
  background: var(--fail-soft);
  color: var(--fail);
  box-shadow: inset 0 0 0 1.5px var(--fail);
}
.outcome p {
  margin: 0;
  color: var(--ink-2);
}
@media (max-width: 560px) {
  .outcome {
    grid-template-columns: 76px 1fr;
    gap: 12px;
  }
}

/* Troubles: symptom on the left, cause and fix on the right */
.troubles {
  margin: 0 0 8px;
}
.trouble {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 2fr);
  gap: 6px 28px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}
.trouble:last-child {
  border-bottom: 1px solid var(--line);
}
.trouble h3 {
  grid-row: span 2;
  font-size: var(--step-1);
}
.trouble dl {
  margin: 0;
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 6px 14px;
}
.trouble dt {
  color: var(--ink-2);
  font-size: var(--step--1);
  padding-top: 2px;
}
.trouble dd {
  margin: 0;
}
.trouble-link {
  grid-column: 2;
  justify-self: start;
  margin-top: 6px;
  font-weight: 600;
  font-size: var(--step--1);
}
@media (max-width: 720px) {
  .trouble {
    grid-template-columns: 1fr;
  }
  .trouble h3 {
    grid-row: auto;
  }
  .trouble-link {
    grid-column: 1;
  }
  .trouble dl {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .trouble dt {
    margin-top: 8px;
  }
}

/* Figures sit on bench paper */
.figure {
  margin: 8px 0 24px;
  padding: 18px;
  background-color: var(--panel);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 8px 8px;
  border: 1px solid var(--line);
  border-radius: var(--r-outer);
}
.fig-svg {
  display: block;
  width: 100%;
  height: auto;
}
.fig-narrow {
  max-width: 560px;
  margin: 0 auto;
}
.figure figcaption {
  margin-top: 12px;
  color: var(--ink-2);
  font-size: var(--step--1);
}

/* Callouts */
.callout {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 var(--r-inner) var(--r-inner) 0;
  padding: 14px 18px;
  margin: 8px 0 16px;
}
.callout p:last-child {
  margin-bottom: 0;
}
.callout[data-tone="warn"] {
  border-left-color: var(--warn);
  background: var(--warn-soft);
}

/* Ladder: ordered from easiest to hardest, joined by a rail */
.ladder {
  list-style: none;
  counter-reset: rung;
  margin: 0 0 16px;
  padding: 0;
  position: relative;
}
.ladder::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: var(--line);
}
.ladder li {
  counter-increment: rung;
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 16px;
  padding: 10px 0 10px 44px;
}
.ladder li::before {
  content: counter(rung);
  position: absolute;
  left: 0;
  top: 10px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--panel);
  border: 2px solid var(--accent);
  color: var(--accent);
  font: 700 0.8rem/24px var(--font-display);
  text-align: center;
}
.ladder strong {
  font-family: var(--font-display);
}
.ladder span {
  grid-column: 1;
  color: var(--ink-2);
}
.ladder em {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  font-style: normal;
  font-size: var(--step--1);
  color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 10px;
  white-space: nowrap;
}
@media (max-width: 560px) {
  .ladder li {
    grid-template-columns: 1fr;
  }
  .ladder em {
    grid-column: 1;
    grid-row: auto;
    justify-self: start;
    margin-top: 4px;
  }
}

/* Scale: a ruler with bands */
.scale {
  margin: 8px 0 20px;
  padding: 20px 18px 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-outer);
}
.scale-bands {
  position: relative;
  height: 64px;
}
.scale-band {
  position: absolute;
  top: 0;
  bottom: 0;
  border-right: 2px solid var(--panel);
  padding: 8px 8px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  color: var(--ink);
  background: color-mix(in srgb, var(--accent) calc(12% + var(--i, 0) * 1%), var(--panel));
}
.scale-band[data-i="0"] { background: color-mix(in srgb, var(--accent) 10%, var(--panel)); }
.scale-band[data-i="1"] { background: color-mix(in srgb, var(--accent) 22%, var(--panel)); }
.scale-band[data-i="2"] { background: color-mix(in srgb, var(--accent) 36%, var(--panel)); }
.scale-band[data-i="3"] { background: color-mix(in srgb, var(--accent) 52%, var(--panel)); color: var(--accent-ink); }
.scale-band[data-i="4"] { background: color-mix(in srgb, var(--accent) 72%, var(--panel)); color: var(--accent-ink); }
.scale-band[data-i="5"] { background: var(--accent); color: var(--accent-ink); }
.scale-band span {
  font: 650 var(--step--1) / 1.1 var(--font-display);
}
.scale-band small {
  font-variant-numeric: tabular-nums;
  opacity: 0.85;
}
.scale-axis {
  position: relative;
  height: 22px;
  border-top: 1px solid var(--ink-2);
  margin-top: 6px;
}
.scale-tick {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  padding-top: 6px;
  font-size: 0.75rem;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}
.scale-tick::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 50%;
  width: 1px;
  height: 5px;
  background: var(--ink-2);
}
.scale-unit {
  margin: 4px 0 0;
  font-size: var(--step--1);
  color: var(--ink-2);
}
@media (max-width: 560px) {
  .scale-bands {
    height: 84px;
  }
  .scale-band {
    padding: 6px 4px;
  }
  .scale-band span {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 0.75rem;
  }
  .scale-band small {
    display: none;
  }
}

/* Compare: technique rows with 5-step meters */
.compare {
  border-top: 1px solid var(--line);
  margin-bottom: 16px;
}
.compare-row {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
}
.compare-name p {
  margin: 0;
  color: var(--ink-2);
  font-size: var(--step--1);
}
.meters {
  margin: 0;
  display: grid;
  gap: 6px;
}
.meters div {
  display: grid;
  grid-template-columns: 92px 1fr;
  align-items: center;
  gap: 10px;
}
.meters dt {
  font-size: var(--step--1);
  color: var(--ink-2);
}
.meters dd {
  margin: 0;
}
.meter {
  --v: 0;
  display: block;
  height: 8px;
  border-radius: 2px;
  background:
    linear-gradient(90deg, var(--accent) calc(var(--v) * 20%), transparent 0),
    repeating-linear-gradient(90deg, var(--line-soft) 0 calc(20% - 3px), transparent calc(20% - 3px) 20%);
  -webkit-mask: repeating-linear-gradient(90deg, #000 0 calc(20% - 3px), transparent calc(20% - 3px) 20%);
  mask: repeating-linear-gradient(90deg, #000 0 calc(20% - 3px), transparent calc(20% - 3px) 20%);
}
@media (max-width: 640px) {
  .compare-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

/* Home: live readouts + click-gap scale */
.num-unit {
  font-size: 0.4em;
  font-weight: 600;
  color: var(--ink-2);
  margin-left: 4px;
  letter-spacing: 0;
}
.gap-scale {
  position: relative;
  margin-top: 14px;
}
.gap-zones {
  display: grid;
  grid-template-columns: 50fr 30fr 120fr; /* 0–200 ms scale */
  height: 26px;
  border-radius: 6px;
  overflow: hidden;
  font-size: 0.75rem;
  font-weight: 600;
}
.gap-zones span {
  display: flex;
  align-items: center;
  padding: 0 8px;
  white-space: nowrap;
  overflow: hidden;
}
.z-fault { background: var(--fail-soft); color: var(--fail); }
.z-grey { background: var(--warn-soft); color: var(--warn); }
.z-normal { background: var(--pass-soft); color: var(--pass); }
.gap-marker {
  position: absolute;
  top: -5px;
  width: 3px;
  height: 36px;
  margin-left: -1px;
  background: var(--ink);
  border-radius: 2px;
  transition: left 0.15s ease-out;
}
@media (max-width: 720px) {
  .readouts[style*="--cols:4"] {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .readouts[style*="--cols:4"] .readout:nth-child(3) {
    border-left: 0;
    padding-left: 4px;
  }
  .gap-zones span { font-size: 0.65rem; padding: 0 4px; }
}

canvas.spark {
  display: block;
  width: 100%;
  height: 44px;
  margin-top: 8px;
}
@media (max-width: 720px) {
  .readouts[style*="--cols:4"] .readout:nth-child(3) { border-left: 0; padding-left: 4px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* CPS family extras */
.bench-bar-under {
  margin: 10px 0 0;
}
.bench-bar-under:not(:has(:not([hidden]))) {
  display: none;
}
#sound[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent);
}
.key-picker {
  margin: -4px 0 12px;
  gap: 10px;
  flex-wrap: wrap;
}
.key-picker strong {
  color: var(--ink);
  min-width: 5em;
}
.onscreen-key {
  display: block;
  margin: 16px auto 0;
  width: min(420px, 80%);
  padding: 14px 0;
  border: 1px solid var(--line);
  border-bottom-width: 4px;
  border-radius: 10px;
  background: var(--panel);
  color: var(--ink-2);
  font: 600 var(--step-0) / 1 var(--font-body);
}
.pad-key.is-key .onscreen-key {
  animation: keydown 0.12s;
}
@keyframes keydown {
  50% {
    transform: translateY(3px);
    border-bottom-width: 1px;
    background: var(--accent-soft);
  }
}
.pad-key.is-key {
  animation: flash-ok 0.15s;
}
.extra:empty {
  display: none;
}
.extra {
  border-top: 1px solid var(--line-soft);
  margin-top: 14px;
  padding-top: 12px;
}
.extra h3 {
  font: 650 var(--step-0) / 1.3 var(--font-display);
  margin: 0 0 6px;
}
.extra p {
  margin: 6px 0 0;
}
.extra .sub {
  color: var(--ink-2);
  font-size: var(--step--1);
}
.key-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.key-list li {
  display: flex;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 4px 10px;
  font-variant-numeric: tabular-nums;
}
kbd {
  font: 600 0.85rem/1 var(--font-body);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 3px 6px;
  background: var(--zone);
}
.recent-title {
  margin-top: 18px !important;
}
.top-list.recent li {
  counter-increment: none;
}
.top-list.recent li::before {
  content: none;
}
.top-list.recent li {
  grid-template-columns: 1fr auto;
}

/* Polling rate */
.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--step--1);
  color: var(--ink-2);
}
.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line);
  flex: none;
}
.status-dot[data-tone="busy"] { background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.status-dot[data-tone="warn"] { background: var(--warn); }
.status-dot[data-tone="ok"] { background: var(--pass); }
.select {
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: var(--r-inner);
  background: var(--panel);
  color: var(--ink);
  font: inherit;
}
.poll-area {
  position: relative;
  min-height: 320px;
  cursor: crosshair;
}
.poll-trail {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.poll-center {
  position: relative;
  pointer-events: none;
}
.poll-big {
  font: 700 clamp(3.5rem, 10vw, 6rem) / 1 var(--font-display);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
}
.poll-unit {
  font: 600 var(--step-2) / 1 var(--font-display);
  color: var(--ink-2);
  margin-left: 6px;
}
.poll-hint {
  color: var(--ink-2);
  margin: 8px 0 0;
}
.chart-panel {
  margin-top: 14px;
}
.acc {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  margin: 0 0 10px;
  font-size: var(--step--1);
}
.acc dt { color: var(--ink-2); }
.acc dd { margin: 0; font-weight: 600; }
.result-side .sub { color: var(--ink-2); font-size: var(--step--1); }
.tier[data-tone="pass"] { border-color: var(--pass); color: var(--pass); }
.tier[data-tone="warn"] { border-color: var(--warn); color: var(--warn); }
ol.runs { margin: 0 0 6px; padding-left: 20px; }

/* DPI */
.dpi-area { position: relative; cursor: default; min-height: 260px; }
.dpi-area.is-locked { border-style: solid; border-color: var(--accent); }
.dpi-area.is-measuring { background: var(--accent-soft); }
.dpi-ruler { position: absolute; left: 24px; right: 24px; top: 18px; display: flex; align-items: center; gap: 8px; font-size: var(--step--1); color: var(--ink-2); }
.dpi-arrow { flex: 1; height: 2px; background: repeating-linear-gradient(90deg, var(--ink-2) 0 6px, transparent 6px 12px); }
.dpi-live { font: 650 var(--step-2) / 1.2 var(--font-display); font-variant-numeric: tabular-nums; margin: 6px 0; }
.dots { display: flex; gap: 8px; justify-content: center; }
.dots .dot { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--line); }
.dots .dot.is-done { background: var(--pass); border-color: var(--pass); }
.dots .dot.is-now { border-color: var(--accent); }
.trial-list { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 6px; }
.trial-list li { display: flex; gap: 14px; align-items: center; padding: 8px 12px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--r-inner); font-variant-numeric: tabular-nums; }
.trial-list li.is-suspect { border-color: var(--warn); background: var(--warn-soft); }
.btn-small { padding: 5px 10px; margin-left: auto; }
/* Scroll */
.scroll-area { min-height: 260px; cursor: ns-resize; }
.scroll-strip { display: flex; flex-wrap: wrap; gap: 2px; max-width: 640px; margin: 16px auto 0; min-height: 14px; justify-content: center; }
.scroll-strip i { width: 6px; height: 14px; border-radius: 1px; }
.scroll-strip i.is-down { background: var(--accent); }
.scroll-strip i.is-up { background: var(--pass); }
.scroll-strip i.is-wrong { background: var(--fail); height: 22px; }
#scroll-compare { margin-top: 6px; }
@media (max-width: 720px) { .readouts[style*="--cols:5"] { grid-template-columns: repeat(2, minmax(0, 1fr)); } .readouts[style*="--cols:5"] .readout { border-left: 0; padding-left: 4px; } }
/* Accuracy */
.acc-canvas { display: block; width: 100%; height: 440px; border: 2px dashed var(--line); border-radius: var(--r-inner); background: color-mix(in srgb, var(--panel) 70%, transparent); cursor: crosshair; touch-action: none; }
.acc-canvas { height: clamp(300px, calc(100vh - 412px), 440px); }
.acc-map { width: 100%; height: 240px; display: block; }
@media (max-width: 640px) { .acc-canvas { height: 360px; } }
.stats:has(> div:nth-child(5)) { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* Tables inside content sections */
.cs table {
  border-collapse: collapse;
  width: 100%;
  font-size: var(--step--1);
  margin: 4px 0 18px;
  background: var(--panel);
}
.cs th,
.cs td {
  border: 1px solid var(--line);
  padding: 9px 11px;
  text-align: left;
  vertical-align: top;
}
.cs th {
  background: var(--zone);
  font-weight: 600;
}
.cs td:nth-child(2) {
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
@media (max-width: 720px) {
  .cs table { display: block; overflow-x: auto; }
}

/* ---------- Legal pages: summary cards + document panel ---------- */
.doc-summary {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.doc-summary li {
  display: grid;
  grid-template-columns: 40px 1fr;
  column-gap: 12px;
  row-gap: 2px;
  align-items: start;
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-outer);
}
.doc-summary .ds-icon {
  grid-row: span 2;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
}
.doc-summary svg {
  width: 22px;
  height: 22px;
}
.doc-summary strong {
  font: 700 var(--step-0) / 1.3 var(--font-display);
}
.doc-summary li > span:last-child {
  color: var(--ink-2);
  font-size: var(--step--1);
  line-height: 1.45;
}
.doc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 24px;
  align-items: start;
}
.doc-aside {
  position: sticky;
  top: 20px;
  display: grid;
  gap: 14px;
}
.doc-aside-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-outer);
  padding: 16px 18px;
}
.doc-aside-title {
  margin: 0 0 10px;
  font: 600 0.75rem/1 var(--font-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.doc-aside ol,
.doc-aside-links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
  font-size: var(--step--1);
}
.doc-aside ol {
  counter-reset: side;
}
.doc-aside ol li {
  counter-increment: side;
}
.doc-aside ol a::before {
  content: counter(side, decimal-leading-zero);
  font: 600 0.72rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--accent);
  margin-right: 8px;
}
.doc-aside a {
  display: block;
  padding: 5px 8px;
  margin: 0 -8px;
  border-radius: 6px;
  color: var(--ink);
  text-decoration: none;
}
.doc-aside a:hover {
  background: var(--accent-soft);
}
.doc-aside-links a::after {
  content: " ↗";
  color: var(--ink-2);
}
.doc-aside-links a[href^="/"]::after {
  content: " →";
}
.doc-aside-btn {
  justify-content: center;
  text-align: center;
}
.doc h2 {
  scroll-margin-top: 20px;
}
@media (max-width: 960px) {
  .doc-layout {
    grid-template-columns: 1fr;
  }
  .doc-aside {
    position: static;
    order: -1;
  }
  .doc-aside-card:first-child,
  .doc-aside-btn {
    display: none;
  }
}
.doc {
  counter-reset: doc;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-outer);
  padding: 8px clamp(20px, 4vw, 48px) 36px;
}
.doc h2 {
  counter-increment: doc;
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: var(--step-1);
  margin: 1.9em 0 0.5em;
  padding-top: 1.1em;
  border-top: 1px solid var(--line-soft);
}
.doc h2:first-child {
  border-top: 0;
  margin-top: 1em;
}
.doc h2::before {
  content: counter(doc, decimal-leading-zero);
  font: 600 0.8rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 6px;
  padding: 5px 7px;
  transform: translateY(-2px);
}
.doc p,
.doc li {
  line-height: 1.7;
}
.doc ul {
  padding-left: 1.2em;
}
.doc li::marker {
  color: var(--accent);
}
.doc a {
  text-underline-offset: 3px;
}

/* ---------- Contact ---------- */
.prose.contact {
  max-width: none;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
}
.contact-card {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-outer);
  color: var(--ink);
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.contact-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(21, 35, 63, 0.08);
}
.cc-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}
.cc-icon svg {
  width: 22px;
  height: 22px;
}
.cc-body {
  display: grid;
  gap: 2px;
}
.cc-body strong {
  font: 700 var(--step-0) / 1.3 var(--font-display);
}
.cc-body span {
  color: var(--ink-2);
  font-size: var(--step--1);
  line-height: 1.4;
}
.cc-go {
  color: var(--accent);
  font-size: 1.2rem;
}
.contact-panels {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 14px;
  margin-top: 22px;
}
.contact-panel {
  padding: 20px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-outer);
}
.contact-panel h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--step-1);
  margin: 0 0 8px;
}
.contact-panel h2 svg {
  width: 22px;
  height: 22px;
  color: var(--accent);
}
.contact-panel p {
  margin: 0 0 8px;
}
.contact-panel .contact-note {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}
.contact-email {
  font: 700 var(--step-1) / 1.3 var(--font-display);
  word-break: break-all;
}
.check-list {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: grid;
  gap: 6px;
}
.check-list li {
  position: relative;
  padding-left: 26px;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.45em;
  width: 14px;
  height: 8px;
  border-left: 2px solid var(--pass);
  border-bottom: 2px solid var(--pass);
  transform: rotate(-45deg);
}
.muted {
  color: var(--ink-2);
  font-size: var(--step--1);
}
.contact-note {
  margin-top: 18px;
}
@media (max-width: 760px) {
  .doc-summary,
  .contact-panels {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* Tool pages: compact hero so the tool sits in the first screen */
.page-head.is-tool {
  padding: 14px 0 16px;
}
.page-head.is-tool h1 {
  font-size: var(--step-3);
  max-width: none;
}
.page-head.is-tool .lede {
  font-size: var(--step-0);
  margin-top: 8px;
  max-width: 75ch;
}
.page-head.is-tool .trust {
  margin-top: 10px;
}
.page-head.is-tool::before {
  inset: -10px calc(50% - 50vw) -10px 45%;
}
@media (max-width: 640px) {
  .page-head.is-tool {
    padding: 10px 0 12px;
  }
  .page-head.is-tool h1 {
    font-size: 1.55rem;
  }
  .page-head.is-tool .lede {
    font-size: 0.92rem;
    line-height: 1.45;
    margin-top: 6px;
  }
  .page-head.is-tool .trust {
    display: none;
  }
}

/* First-screen fit for the home bench and tight tool pages */
.mouse-svg {
  max-width: 220px;
}
.checklist li {
  padding: 7px 12px;
}
main:has(.page-head.is-tool) .crumbs {
  margin-top: 12px;
}
@media (max-width: 640px) {
  .mouse-lab {
    grid-template-columns: 104px 1fr;
    gap: 12px;
  }
  .mouse-svg {
    max-width: 104px;
    margin: 4px 0 0;
  }
  .mouse-lab .progress {
    font-size: 1rem;
    margin: 0 0 6px;
  }
  .checklist li {
    padding: 5px 8px;
    gap: 8px;
    grid-template-columns: 16px 1fr auto;
    font-size: 0.86rem;
    line-height: 1.25;
  }
  .checklist .mark {
    width: 14px;
    height: 14px;
  }
  .mouse-lab .hint {
    font-size: 0.82rem;
  }
}
.page-head.is-tool {
  padding: 8px 0 12px;
}
.page-head.is-tool .lede {
  margin-top: 6px;
}
main:has(.page-head.is-tool) .crumbs {
  margin-top: 10px;
}
@media (max-width: 640px) {
  .page-head.is-tool {
    padding: 6px 0 10px;
  }
}