/* ==========================================================================
   Multitek Measuret — measuret.com
   Palette and design language taken from the shipping application:
   geometry in steel, the measured quantity in cyan, dimension lines in amber.
   Thin strokes, generous space, flat surfaces — no gradients, no drop shadows.
   ========================================================================== */

:root {
  color-scheme: dark;

  /* Application palette */
  --chrome: #181c22;        /* top bar / darkest chrome */
  --deep: #242b2f;          /* background deep */
  --panel: #2b333a;         /* raised panel on deep */
  --panel-2: #202730;       /* recessed panel */
  --line: #3a444d;          /* hairline on dark */
  --steel: #c9d4e0;         /* geometry / body text on dark */
  --cyan: #29b6e8;          /* the measured quantity */
  --cyan-soft: #74c9de;     /* cyan sub-brand (About screen) */
  --amber: #f5a210;         /* dimension lines and arrowheads */
  --amber-soft: #f4be5e;    /* warm amber, suite name */
  --green: #7abe76;         /* pass */
  --red: #d65d5d;           /* fail */

  /* Text tints. The application's own greens and reds are tuned for a dark
     WinForms canvas; as small web body text they land just under WCAG AA, so
     the reading tints below are nudged until they clear 4.5:1 against the
     surface they are actually used on. The accent hues are unchanged. */
  --steel-dim: #8a97a6;     /* muted text on dark   — 4.8:1 on --deep */
  --cyan-deep: #0c6786;     /* cyan on paper        — 5.8:1 on --paper */
  --amber-deep: #8f5b00;    /* amber on paper       — 5.2:1 on --paper */
  --green-deep: #2f6f2b;    /* pass on white        — 6.1:1 */
  --red-deep: #a12b2b;      /* fail on white        — 7.3:1 */
  --red-text: #de7373;      /* fail on dark         — 4.9:1 on --panel-2 */

  /* Paper — the report side of the product */
  --paper: #f2f5f7;
  --paper-2: #e7ecef;
  --paper-line: #ccd6dd;
  --dark-text: #1e252a;
  --dark-muted: #55656f;

  --radius: 10px;
  --shell: min(1180px, calc(100vw - 40px));

  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--deep);
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  color: var(--steel);
  background: var(--deep);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* A faint measurement grid, drawn as hairlines rather than a gradient wash. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(201, 212, 224, 0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 212, 224, 0.032) 1px, transparent 1px);
  background-size: 44px 44px;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

h1,
h2,
h3 {
  font-weight: 700;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  color: var(--chrome);
  background: #fff;
  border-radius: 6px;
  font-weight: 700;
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--line);
  background: var(--chrome);
}

.nav-shell {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  flex: 0 0 auto;
}

.brand img {
  width: 34px;
  height: 34px;
}

.brand-name {
  display: block;
  color: #fff;
  font-size: 21px;
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.brand-sub {
  display: block;
  color: var(--steel-dim);
  font-size: 9px;
  line-height: 1.3;
  letter-spacing: 0.17em;
  font-weight: 700;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.main-nav > a {
  position: relative;
  color: #b3c0cd;
  font-size: 14px;
  font-weight: 600;
  transition: color 160ms ease;
}

.main-nav > a:hover,
.main-nav > a[aria-current="page"] {
  color: #fff;
}

.main-nav > a[aria-current="page"]::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 2px;
  background: var(--cyan);
}

.main-nav .nav-cta {
  padding: 9px 16px;
  color: #1b1200;
  background: var(--amber);
  border-radius: 6px;
  font-weight: 700;
}

.main-nav .nav-cta:hover {
  background: var(--amber-soft);
}

/* The current-page rule paints links white, which would put white on amber. */
.main-nav .nav-cta[aria-current="page"] {
  color: #1b1200;
}

.main-nav .nav-cta::after {
  display: none;
}

.nav-toggle {
  display: none;
}

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

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--deep);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: clamp(40px, 6vw, 84px);
  padding-block: 78px 70px;
}

.eyebrow,
.section-kicker {
  color: var(--cyan);
  font-size: 12px;
  line-height: 1.2;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 700;
}

/* The bright cyan is a dark-surface colour. On paper it drops to about 2:1,
   so light sections take the deeper tint instead. */
.section:not(.section-dark) .section-kicker,
.related-guides .section-kicker {
  color: var(--cyan-deep);
}

/* …except where a dark panel sits inside a light section. Needs to outrank the
   rule above, which carries the specificity of the :not() argument. */
.section:not(.section-dark) .release-head .section-kicker {
  color: var(--cyan);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 24px;
  padding: 8px 13px;
  color: #b8c7d1;
  border: 1px solid var(--line);
  border-radius: 999px;
  letter-spacing: 0.12em;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.hero h1 {
  margin: 0;
  max-width: 640px;
  color: #fff;
  font-size: clamp(46px, 6vw, 78px);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.hero h1 em {
  color: var(--cyan);
  font-style: normal;
}

.hero-lead {
  max-width: 580px;
  margin: 26px 0 30px;
  color: #a9b7c4;
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.6;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.button-row.spaced {
  margin-top: 30px;
}

.prose-narrow {
  max-width: 820px;
}

h3.tight {
  margin-top: 0;
}

.section-dark h3 {
  color: #fff;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 700;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.button-primary {
  color: #04222e;
  background: var(--cyan);
  border-color: var(--cyan);
}

.button-primary:hover {
  background: var(--cyan-soft);
  border-color: var(--cyan-soft);
}

.button-secondary {
  color: #fff;
  border-color: #4a5762;
  background: transparent;
}

.button-secondary:hover {
  border-color: var(--steel);
  background: rgba(201, 212, 224, 0.06);
}

.button-secondary.light {
  color: var(--dark-text);
  border-color: #9fb0bb;
}

.button-secondary.light:hover {
  background: rgba(30, 37, 42, 0.05);
  border-color: var(--dark-text);
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(24px, 4vw, 46px);
  margin: 42px 0 0;
}

.hero-facts div {
  min-width: 92px;
}

.hero-facts dt {
  color: #fff;
  font-size: 27px;
  line-height: 1;
  font-weight: 700;
}

.hero-facts dd {
  max-width: 130px;
  margin: 7px 0 0;
  color: var(--steel-dim);
  font-size: 12px;
  line-height: 1.4;
}

/* --------------------------------------------------- instrument surface -- */

.instrument-panel {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
}

.instrument-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.instrument-label {
  color: var(--steel-dim);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 700;
}

.instrument-top strong {
  display: block;
  margin-top: 3px;
  color: #fff;
  font-size: 14px;
}

.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 10px;
  color: var(--green);
  border: 1px solid rgba(122, 190, 118, 0.45);
  border-radius: 999px;
  font-size: 10px;
  letter-spacing: 0.12em;
  font-weight: 700;
}

.instrument-canvas {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #1b2126;
}

.instrument-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 10px;
}

.instrument-metrics div {
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.instrument-metrics span {
  display: block;
  color: var(--steel-dim);
  font-size: 10px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.instrument-metrics strong {
  display: block;
  margin-top: 3px;
  color: var(--cyan);
  font-size: 16px;
  font-variant-numeric: tabular-nums;
}

.instrument-metrics .amber {
  color: var(--amber);
}

.instrument-metrics .plain {
  color: #fff;
}

/* -------------------------------------------------------------- banding -- */

.spec-band {
  overflow: hidden;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  background: var(--chrome);
}

.spec-band-track {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px 26px;
  color: var(--steel-dim);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
}

.spec-band-track i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--amber);
}

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

.section {
  padding-block: clamp(66px, 8vw, 106px);
  color: var(--dark-text);
  background: var(--paper);
}

.section + .section {
  border-top: 1px solid var(--paper-line);
}

.section-alt {
  background: var(--paper-2);
}

.section-dark {
  color: var(--steel);
  border-top: 1px solid var(--line) !important;
  border-bottom: 1px solid var(--line);
  background: var(--deep);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(240px, 0.55fr);
  gap: 54px;
  align-items: end;
  margin-bottom: 46px;
}

.section-heading h2,
.showcase-copy h2,
.two-column h2,
.knowledge-intro h2,
.faq-intro h2,
.contact-card h2,
.support-cta h2 {
  max-width: 760px;
  margin: 10px 0 0;
  font-size: clamp(32px, 4.2vw, 52px);
  line-height: 1.06;
  letter-spacing: -0.035em;
}

.section-heading > p,
.knowledge-intro p {
  margin: 0;
  color: var(--dark-muted);
  font-size: 17px;
}

.section-dark .section-heading > p {
  color: var(--steel-dim);
}

.section-dark h2 {
  color: #fff;
}

/* ---------------------------------------------------------- feature grid -- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.feature-grid.three {
  grid-template-columns: repeat(3, 1fr);
}

.feature-card {
  display: flex;
  flex-direction: column;
  min-height: 280px;
  padding: 24px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 180ms ease;
}

.feature-card:hover {
  border-color: #8fa4b1;
}

.feature-number {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--cyan-deep);
  border: 1px solid #a9d5e4;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
}

.feature-card h3 {
  margin: 34px 0 10px;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.feature-card p {
  margin: 0;
  color: var(--dark-muted);
  font-size: 14px;
}

.feature-card .text-link {
  margin-top: auto;
  padding-top: 16px;
}

.section-dark .feature-card {
  color: var(--steel);
  border-color: var(--line);
  background: var(--panel-2);
}

.section-dark .feature-card:hover {
  border-color: var(--cyan);
}

.section-dark .feature-card h3 {
  color: #fff;
}

.section-dark .feature-card p {
  color: var(--steel-dim);
}

.section-dark .feature-number {
  color: var(--cyan);
  border-color: #2f5f74;
}

.text-link {
  display: inline-block;
  color: var(--cyan-deep);
  font-size: 13px;
  font-weight: 700;
}

.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.section-dark .text-link,
.article-body .text-link {
  color: var(--cyan);
}

/* ------------------------------------------------------------- showcase -- */

.split-showcase {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(48px, 7vw, 92px);
  align-items: center;
}

.split-showcase.reverse .showcase-copy {
  order: 2;
}

.showcase-copy > p {
  color: var(--steel-dim);
  font-size: 17px;
}

.section:not(.section-dark) .showcase-copy > p {
  color: var(--dark-muted);
}

.formula {
  margin: 22px 0;
  padding: 18px 20px;
  color: var(--cyan);
  border-left: 3px solid var(--cyan);
  background: rgba(41, 182, 232, 0.07);
  font-family: Consolas, "Cascadia Mono", "Courier New", monospace;
  font-size: clamp(16px, 2vw, 22px);
  font-weight: 700;
  overflow-x: auto;
}

.section:not(.section-dark) .formula {
  color: #0a5f7f;
  background: #e8f4fa;
}

.formula.compact {
  font-size: 17px;
}

.check-list,
.number-list {
  margin: 22px 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  margin: 10px 0;
  padding-left: 26px;
}

.check-list li::before {
  content: "";
  position: absolute;
  top: 0.6em;
  left: 0;
  width: 10px;
  height: 5px;
  border-bottom: 2px solid var(--cyan);
  border-left: 2px solid var(--cyan);
  transform: rotate(-45deg);
}

.section:not(.section-dark) .check-list li::before {
  border-color: var(--cyan-deep);
}

.number-list {
  counter-reset: step;
}

.number-list li {
  counter-increment: step;
  position: relative;
  margin: 16px 0;
  padding-left: 48px;
}

.number-list li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 0;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.section:not(.section-dark) .number-list li::before {
  color: var(--cyan-deep);
}

/* ---------------------------------------------------------- screenshots -- */

.screen-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--chrome);
}

.section:not(.section-dark) .screen-frame {
  border-color: #9fb0bb;
}

.screen-toolbar {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding-inline: 13px;
  color: var(--steel-dim);
  background: var(--chrome);
  font-size: 9px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.screen-toolbar i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4c5b66;
}

.screen-toolbar i:first-child {
  background: var(--red);
}

.screen-toolbar i:nth-child(2) {
  background: var(--amber);
}

.screen-toolbar i:nth-child(3) {
  background: var(--green);
}

.screen-toolbar b {
  margin-left: auto;
  font-weight: 700;
}

figure {
  margin: 0;
}

figcaption {
  padding-top: 12px;
  color: var(--steel-dim);
  font-size: 12px;
  line-height: 1.5;
}

.section:not(.section-dark) figcaption {
  color: var(--dark-muted);
}

.shot-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.shot-grid.three {
  grid-template-columns: repeat(3, 1fr);
}

/* --------------------------------------------------------- report block -- */

.report-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.8fr) minmax(340px, 1.2fr);
  gap: clamp(46px, 8vw, 100px);
  align-items: center;
}

.report-image {
  border: 1px solid var(--paper-line);
  background: #fff;
}

.report-list {
  margin: 30px 0;
}

.report-list > div {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--paper-line);
}

.report-list > div:last-child {
  border-bottom: 1px solid var(--paper-line);
}

.report-list span {
  color: var(--cyan-deep);
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.report-list strong {
  display: block;
  color: var(--dark-text);
}

.report-list p {
  margin: 0;
  color: var(--dark-muted);
  font-size: 14px;
}

/* ------------------------------------------------------------- articles -- */

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.article-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 300px;
  padding: 25px;
  overflow: hidden;
  color: var(--steel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
  transition: border-color 180ms ease;
}

.article-card:hover {
  border-color: var(--cyan);
}

.article-index {
  position: absolute;
  top: 10px;
  right: 18px;
  color: rgba(201, 212, 224, 0.07);
  font-size: 74px;
  line-height: 1;
  font-weight: 700;
}

.article-kicker {
  position: relative;
  color: var(--cyan);
  font-size: 10px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  font-weight: 700;
}

.article-card h3 {
  position: relative;
  margin: 46px 0 12px;
  color: #fff;
  font-size: 22px;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.article-card p {
  position: relative;
  margin: 0;
  color: var(--steel-dim);
  font-size: 14px;
}

.article-meta {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 20px;
  color: var(--steel-dim);
  border-top: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.05em;
}

.article-meta b {
  color: var(--amber);
  font-weight: 700;
}

/* ------------------------------------------------------------ page hero -- */

.page-hero,
.article-hero {
  padding-block: clamp(58px, 7vw, 96px);
  border-bottom: 1px solid var(--line);
  background: var(--deep);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  margin-bottom: 40px;
  padding: 0;
  color: var(--steel-dim);
  list-style: none;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: #4f5c67;
}

.breadcrumb a:hover {
  color: var(--cyan);
}

.page-hero h1,
.article-hero h1 {
  max-width: 900px;
  margin: 14px 0 20px;
  color: #fff;
  font-size: clamp(38px, 5.4vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.page-hero > .shell > p,
.article-hero > .shell > p {
  max-width: 720px;
  margin: 0 0 26px;
  color: #a9b7c4;
  font-size: clamp(17px, 1.8vw, 20px);
}

.page-hero > .shell > p:last-child {
  margin-bottom: 0;
}

/* -------------------------------------------------------- article layout -- */

.article-byline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-top: 28px;
  color: var(--steel-dim);
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.article-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 740px);
  gap: clamp(44px, 7vw, 90px);
  justify-content: center;
  padding-block: 62px 92px;
}

.article-toc {
  position: sticky;
  top: 100px;
  align-self: start;
  padding-top: 6px;
}

.article-toc > strong {
  display: block;
  margin-bottom: 14px;
  color: var(--steel-dim);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.article-toc a {
  display: block;
  padding: 9px 0;
  color: #93a3b1;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}

.article-toc a:hover {
  color: var(--cyan);
}

.article-toc .toc-cta {
  margin-top: 18px;
  padding: 11px;
  color: #1b1200;
  border: 0;
  border-radius: 6px;
  background: var(--amber);
  text-align: center;
  font-weight: 700;
}

.article-body {
  color: var(--steel);
  font-size: 17px;
  line-height: 1.78;
}

.article-intro {
  margin: 0 0 50px;
  padding-bottom: 30px;
  color: #e4ebf1;
  border-bottom: 1px solid var(--line);
  font-size: 21px;
  line-height: 1.55;
}

.article-body section {
  scroll-margin-top: 100px;
  margin-bottom: 52px;
}

.article-body h2 {
  margin: 0 0 18px;
  color: #fff;
  font-size: clamp(26px, 3.4vw, 36px);
  line-height: 1.16;
  letter-spacing: -0.03em;
}

.article-body h3 {
  margin: 32px 0 10px;
  color: #fff;
  font-size: 19px;
  letter-spacing: -0.015em;
}

.article-body p {
  margin: 0 0 20px;
}

.article-body strong {
  color: #fff;
}

.article-body a:not(.button):not(.text-link) {
  color: #fff;
  text-decoration: underline;
  text-decoration-color: var(--cyan);
  text-underline-offset: 4px;
}

.knowledge-callout {
  margin: 26px 0;
  padding: 20px 22px;
  color: #bdd2dc;
  border: 1px solid #2f5f74;
  border-left-width: 3px;
  border-radius: 6px;
  background: rgba(41, 182, 232, 0.06);
  font-size: 15px;
  line-height: 1.65;
}

.knowledge-callout > *:last-child {
  margin-bottom: 0;
}

.knowledge-callout strong.callout-label {
  display: block;
  margin-bottom: 6px;
  color: var(--cyan);
  font-size: 10px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.section:not(.section-dark) .knowledge-callout {
  color: var(--dark-muted);
  border-color: #a8cfe0;
  background: #eaf5fb;
}

.section:not(.section-dark) .knowledge-callout strong.callout-label {
  color: var(--cyan-deep);
}

/* A dark band that only carries a figure needs less air than a full section. */
.section.band {
  padding-block: 44px;
}

.editorial-note {
  margin-top: 64px;
  padding: 22px 0;
  color: var(--steel-dim);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.6;
}

.editorial-note strong {
  display: block;
  margin-bottom: 5px;
  color: var(--amber);
  font-size: 10px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.editorial-note p {
  margin: 0;
}

/* ---------------------------------------------------------------- table -- */

/* A grid or flex child defaults to min-width:auto, which makes it grow to fit
   its widest content. That would let a wide table push the whole page sideways
   instead of scrolling inside its own wrapper, so every layout child is
   explicitly allowed to be narrower than its contents. */
.two-column > *,
.split-showcase > *,
.report-grid > *,
.contact-grid > *,
.faq-layout > *,
.article-layout > *,
.section-heading > *,
.knowledge-intro > *,
.release-columns > *,
.support-cta-grid > * {
  min-width: 0;
}

.data-table-wrap {
  max-width: 100%;
  margin: 26px 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.section:not(.section-dark) .data-table-wrap {
  border-color: var(--paper-line);
}

table.data-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 14px;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

table.data-table caption {
  padding: 12px 16px;
  color: var(--steel-dim);
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
}

table.data-table th,
table.data-table td {
  padding: 11px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

table.data-table thead th {
  color: var(--steel-dim);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

table.data-table tbody th {
  color: #fff;
  font-weight: 700;
}

table.data-table td {
  color: var(--steel-dim);
}

table.data-table tbody tr:last-child th,
table.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.section:not(.section-dark) table.data-table caption {
  color: var(--dark-muted);
  border-color: var(--paper-line);
}

.section:not(.section-dark) table.data-table th,
.section:not(.section-dark) table.data-table td {
  border-color: var(--paper-line);
}

.section:not(.section-dark) table.data-table thead th {
  color: var(--dark-muted);
  background: #fff;
}

.section:not(.section-dark) table.data-table tbody th {
  color: var(--dark-text);
}

.section:not(.section-dark) table.data-table td {
  color: var(--dark-muted);
  background: #fff;
}

/* Result chips — the application's own Pass / Fail / Indeterminate states. */
.chip {
  display: inline-block;
  padding: 2px 9px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 700;
  white-space: nowrap;
}

.chip-pass {
  color: var(--green);
}

.chip-fail {
  color: var(--red-text);
}

.chip-indeterminate {
  color: var(--amber);
}

.section:not(.section-dark) .chip-pass {
  color: var(--green-deep);
}

.section:not(.section-dark) .chip-fail {
  color: var(--red-deep);
}

.section:not(.section-dark) .chip-indeterminate {
  color: var(--amber-deep);
}

code {
  padding: 2px 6px;
  color: #0a5f7f;
  border-radius: 4px;
  background: #e2f2f9;
  font-family: Consolas, "Cascadia Mono", "Courier New", monospace;
  font-size: 0.92em;
}

.article-body code,
.section-dark code {
  color: #9fe0f7;
  background: rgba(41, 182, 232, 0.1);
}

/* ------------------------------------------------------ related guides -- */

.related-guides {
  padding-block: 66px;
  color: var(--dark-text);
  background: var(--paper);
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 22px;
}

.related-grid a {
  padding: 22px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 180ms ease;
}

.related-grid a:hover {
  border-color: #8fa4b1;
}

.related-grid span,
.related-grid strong {
  display: block;
}

.related-grid span {
  color: var(--cyan-deep);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
}

.related-grid strong {
  margin-top: 6px;
  font-size: 17px;
}

/* -------------------------------------------------------------- support -- */

.support-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.support-card {
  display: flex;
  flex-direction: column;
  min-height: 250px;
  padding: 30px;
  color: var(--steel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
  transition: border-color 180ms ease;
}

.support-card:hover {
  border-color: var(--cyan);
}

.support-card > span {
  color: var(--cyan);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
}

.support-card h2,
.support-card h3 {
  margin: 34px 0 10px;
  color: #fff;
  font-size: 26px;
  letter-spacing: -0.025em;
}

.support-card p {
  margin: 0;
  color: var(--steel-dim);
}

.support-card b {
  display: inline-block;
  margin-top: auto;
  padding-top: 16px;
  color: var(--amber);
  font-size: 13px;
}

.support-cta {
  padding-block: clamp(56px, 7vw, 84px);
  border-top: 1px solid var(--line);
  background: var(--chrome);
}

.support-cta-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 48px;
  align-items: center;
}

.support-cta h2 {
  margin: 10px 0 12px;
  color: #fff;
  font-size: clamp(30px, 3.6vw, 44px);
}

.support-cta p {
  max-width: 700px;
  margin: 0;
  color: var(--steel-dim);
}

/* -------------------------------------------------------------- release -- */

.release-card {
  overflow: hidden;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  background: #fff;
}

.release-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 32px;
  color: #fff;
  background: var(--deep);
}

.release-head h2 {
  margin: 10px 0 4px;
  font-size: 30px;
}

.release-head p {
  margin: 0;
  color: var(--steel-dim);
}

.release-version {
  color: rgba(201, 212, 224, 0.16);
  font-size: clamp(48px, 8vw, 92px);
  line-height: 1;
  letter-spacing: -0.06em;
  font-weight: 700;
}

.release-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  padding: 32px;
  color: var(--dark-text);
}

.release-columns h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.release-columns .check-list li::before {
  border-color: var(--cyan-deep);
}

.download-notice {
  margin: 0 32px 32px;
  padding: 22px;
  color: var(--dark-text);
  border: 1px solid #d9b96b;
  border-radius: 6px;
  background: #fdf6e6;
}

.download-notice strong {
  display: block;
  margin-bottom: 4px;
  font-size: 17px;
}

.download-notice p {
  margin: 0;
  color: var(--dark-muted);
  font-size: 15px;
}

/* ------------------------------------------------------------------ faq -- */

.faq-layout {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: clamp(44px, 7vw, 90px);
  align-items: start;
}

.faq-intro {
  position: sticky;
  top: 105px;
}

.faq-intro p {
  color: var(--dark-muted);
}

.faq-list details {
  border-top: 1px solid var(--paper-line);
}

.faq-list details:last-child {
  border-bottom: 1px solid var(--paper-line);
}

.faq-list summary {
  position: relative;
  padding: 22px 48px 22px 0;
  cursor: pointer;
  list-style: none;
  font-size: 18px;
  font-weight: 700;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  position: absolute;
  top: 17px;
  right: 8px;
  color: var(--cyan-deep);
  font-size: 26px;
  font-weight: 400;
}

.faq-list details[open] summary::after {
  content: "\2013";
}

.faq-list details > div {
  padding: 0 40px 22px 0;
  color: var(--dark-muted);
}

.faq-list details > div > *:last-child {
  margin-bottom: 0;
}

/* -------------------------------------------------------------- contact -- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 70px);
  align-items: start;
}

.contact-details > div {
  padding: 22px 0;
  border-top: 1px solid var(--paper-line);
}

.contact-details > div:last-child {
  border-bottom: 1px solid var(--paper-line);
}

.contact-details span {
  display: block;
  margin-bottom: 6px;
  color: var(--cyan-deep);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 700;
}

.contact-details a,
.contact-details p {
  display: block;
  margin: 2px 0;
  color: var(--dark-text);
  font-size: 18px;
  font-weight: 700;
  font-style: normal;
}

.contact-details a:hover {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.contact-details .addr {
  font-size: 16px;
  line-height: 1.55;
  font-weight: 600;
}

.contact-form {
  padding: 28px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  background: #fff;
}

.contact-form h2 {
  margin: 0 0 6px;
  font-size: 24px;
  letter-spacing: -0.02em;
}

.contact-form > p {
  margin: 0 0 22px;
  color: var(--dark-muted);
  font-size: 14px;
}

.field {
  display: block;
  margin-bottom: 16px;
}

.field > span {
  display: block;
  margin-bottom: 5px;
  color: #46565f;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
}

.field input,
.field textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  color: var(--dark-text);
  border: 1px solid #a9b9c4;
  border-radius: 6px;
  background: #fff;
}

.field textarea {
  min-height: 132px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--cyan-deep);
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 14px;
}

.calc-grid select {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  color: var(--dark-text);
  border: 1px solid #a9b9c4;
  border-radius: 6px;
  background: #fff;
}

.calc-grid output {
  display: flex;
  min-height: 44px;
  align-items: center;
  padding: 10px 12px;
  color: var(--cyan-deep);
  border: 1px solid #a9d5e4;
  border-radius: 6px;
  background: #edf7fb;
  font-weight: 700;
}

@media (max-width: 580px) {
  .calc-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.form-note {
  margin: 16px 0 0;
  color: var(--dark-muted);
  font-size: 12px;
  line-height: 1.6;
}

.button-submit {
  width: 100%;
  color: #04222e;
  background: var(--cyan);
  border-color: var(--cyan);
  cursor: pointer;
}

.button-submit:hover {
  background: var(--cyan-soft);
  border-color: var(--cyan-soft);
}

/* ---------------------------------------------------------- two column -- */

.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(46px, 7vw, 90px);
  align-items: start;
}

.two-column > div > p {
  color: var(--dark-muted);
}

.section-dark .two-column > div > p {
  color: var(--steel-dim);
}

.spec-panel {
  padding: 26px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  background: #fff;
}

.section-dark .spec-panel {
  border-color: var(--line);
  background: var(--panel-2);
}

/* The calculator holds form controls styled for paper, so it keeps a paper
   surface even inside a dark section — which also suits it: the report side of
   this product is white. */
.section-dark .spec-panel.calc-panel {
  color: var(--dark-text);
  border-color: var(--paper-line);
  background: var(--paper);
}

.section-dark .spec-panel.calc-panel h3 {
  color: var(--dark-text);
}

.section-dark .knowledge-intro p {
  color: var(--steel-dim);
}

.spec-panel h3 {
  margin: 0 0 18px;
  font-size: 18px;
}

.spec-panel dl,
.spec-panel dd {
  margin: 0;
}

.spec-panel dl > div {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 18px;
  padding: 13px 0;
  border-top: 1px solid var(--paper-line);
}

.section-dark .spec-panel dl > div {
  border-color: var(--line);
}

.spec-panel dt {
  color: var(--dark-muted);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
}

.spec-panel dd {
  color: var(--dark-text);
  font-size: 14px;
  font-weight: 600;
}

.section-dark .spec-panel dt {
  color: var(--steel-dim);
}

.section-dark .spec-panel dd {
  color: #fff;
}

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

.site-footer {
  padding-block: 58px 22px;
  border-top: 1px solid var(--line);
  background: var(--chrome);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr repeat(3, 0.55fr);
  gap: 40px;
}

.footer-brand img {
  width: 168px;
  height: auto;
}

.footer-brand p {
  max-width: 320px;
  margin: 14px 0 0;
  color: var(--steel-dim);
  font-size: 13px;
}

.footer-grid h2 {
  margin: 3px 0 16px;
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.footer-grid > div > a {
  display: block;
  margin: 9px 0;
  color: #8a99a6;
  font-size: 13px;
}

.footer-grid > div > a:hover {
  color: var(--cyan);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  margin-top: 48px;
  padding-top: 20px;
  color: #8a99a6;
  border-top: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.06em;
}

/* ------------------------------------------------------------ error page -- */

.error-page {
  min-height: 66vh;
  display: grid;
  align-content: center;
  justify-items: center;
  padding-block: 84px;
  text-align: center;
}

.error-code {
  color: rgba(41, 182, 232, 0.22);
  font-size: clamp(96px, 20vw, 230px);
  line-height: 0.8;
  font-weight: 700;
}

.error-page h1 {
  margin: 30px 0 6px;
  color: #fff;
  font-size: clamp(34px, 5vw, 56px);
  letter-spacing: -0.04em;
}

.error-page p {
  max-width: 520px;
  color: var(--steel-dim);
}

/* ---------------------------------------------------------- responsive -- */

@media (max-width: 1050px) {
  .hero-grid,
  .split-showcase,
  .report-grid,
  .support-cta-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .split-showcase.reverse .showcase-copy {
    order: 0;
  }

  .hero-copy,
  .showcase-copy {
    max-width: 720px;
  }

  .feature-grid,
  .feature-grid.three {
    grid-template-columns: 1fr 1fr;
  }

  .article-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1.3fr repeat(3, 0.7fr);
  }
}

@media (max-width: 820px) {
  :root {
    --shell: min(100% - 30px, 700px);
  }

  .nav-shell {
    position: relative;
    min-height: 64px;
    flex-wrap: wrap;
  }

  /* The collapsing menu is an enhancement. Without JavaScript the toggle would
     do nothing, so it is only shown once the inline head script has marked the
     document as scripted; until then the nav stays open as a plain column. */
  .js .nav-toggle {
    width: 46px;
    height: 40px;
    display: grid;
    align-content: center;
    gap: 5px;
    padding: 9px;
    color: #fff;
    border: 1px solid #3f4c57;
    border-radius: 6px;
    background: transparent;
    cursor: pointer;
  }

  .nav-toggle span {
    width: 100%;
    height: 2px;
    background: currentColor;
  }

  .nav-toggle em {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  .main-nav {
    order: 3;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 14px;
  }

  .js .main-nav {
    position: absolute;
    top: 64px;
    right: 0;
    left: 0;
    z-index: 99;
    order: 0;
    width: auto;
    display: none;
    padding: 14px 0 20px;
    border-bottom: 1px solid var(--line);
    background: var(--chrome);
  }

  .js .main-nav.open {
    display: flex;
  }

  .main-nav > a {
    padding: 12px 4px;
    border-bottom: 1px solid var(--line);
  }

  .main-nav > a[aria-current="page"]::after {
    display: none;
  }

  .main-nav .nav-cta {
    margin-top: 14px;
    text-align: center;
  }

  .section-heading,
  .two-column,
  .knowledge-intro,
  .faq-layout,
  .contact-grid,
  .release-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .section-heading {
    align-items: start;
  }

  .support-grid,
  .shot-grid,
  .shot-grid.three {
    grid-template-columns: minmax(0, 1fr);
  }

  .faq-intro,
  .article-toc {
    position: static;
  }

  .article-layout {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 40px;
  }

  .article-toc {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 580px) {
  .brand-sub {
    display: none;
  }

  .hero h1 {
    font-size: clamp(40px, 12vw, 58px);
  }

  .hero-facts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .hero-facts div {
    min-width: 0;
  }

  .instrument-metrics {
    grid-template-columns: minmax(0, 1fr);
  }

  .feature-grid,
  .feature-grid.three,
  .article-grid,
  .related-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .section-heading h2,
  .showcase-copy h2,
  .two-column h2,
  .knowledge-intro h2,
  .faq-intro h2,
  .contact-card h2,
  .support-cta h2 {
    font-size: 32px;
  }

  .contact-form,
  .support-card,
  .article-card {
    padding: 22px;
  }

  .release-head,
  .release-columns {
    padding: 24px;
  }

  .download-notice {
    margin: 0 24px 24px;
  }
}

@media print {
  .site-header,
  .site-footer,
  .support-cta,
  .article-toc,
  .nav-toggle {
    display: none;
  }

  body {
    color: #000;
    background: #fff;
  }
}