:root {
  --ink: #10252b;
  --ink-soft: #29434a;
  --paper: #eef1e8;
  --panel: #f9fbf6;
  --panel-deep: #dbe7df;
  --line: #91a9a0;
  --new: #f4aa2a;
  --replacement: #3b8797;
  --signal: #e15e43;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(16, 37, 43, 0.11);
  color-scheme: light;
  font-family: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(rgba(145, 169, 160, 0.11) 1px, transparent 1px),
    linear-gradient(90deg, rgba(145, 169, 160, 0.11) 1px, transparent 1px),
    var(--paper);
  background-size: 32px 32px;
  color: var(--ink);
  line-height: 1.55;
}

a {
  color: inherit;
  text-decoration-thickness: 0.12em;
  text-underline-offset: 0.16em;
}

a:hover {
  color: var(--signal);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 5;
  min-height: 44px;
  padding: 0.65rem 0.9rem;
  transform: translateY(-160%);
  background: var(--new);
  color: var(--ink);
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.wrap {
  width: min(1120px, calc(100% - 2.5rem));
  margin: 0 auto;
}

.site-header {
  background: var(--ink);
  color: var(--paper);
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  min-height: 72px;
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.7rem;
  min-height: 44px;
  color: var(--paper);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.wordmark span {
  color: #b8cdc1;
  font-family: Menlo, Consolas, monospace;
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.45rem 1.1rem;
  font-family: Menlo, Consolas, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--paper);
}

.language-link {
  padding: 0.25rem 0.7rem;
  border: 1px solid #718f87;
  border-radius: 999px;
  text-decoration: none;
}

.hero {
  padding: 5rem 0 4.25rem;
}

.kicker,
.eyebrow,
.source-stamp,
.metric-label,
.legend-label,
.section-number,
.table-caption,
.tiny-label {
  font-family: Menlo, Consolas, monospace;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.kicker {
  margin: 0 0 1.4rem;
  color: var(--signal);
  font-size: 0.77rem;
  font-weight: 800;
}

h1,
h2,
h3,
p {
  max-width: 72ch;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.02;
  text-wrap: balance;
}

h1 {
  max-width: 11ch;
  margin-bottom: 1.5rem;
  font-size: clamp(3.25rem, 8vw, 6.9rem);
  letter-spacing: -0.075em;
}

.deck {
  max-width: 55rem;
  margin: 0 0 2.2rem;
  color: var(--ink-soft);
  font-size: clamp(1.1rem, 2.1vw, 1.45rem);
  line-height: 1.4;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: 1rem;
  align-items: stretch;
}

.readout-card,
.source-card,
.diagram-card,
.method-card,
.limit-card {
  border: 2px solid var(--ink);
  box-shadow: var(--shadow);
}

.readout-card {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 2.7rem);
  background: var(--ink);
  color: var(--paper);
}

.readout-card::after {
  position: absolute;
  right: -5rem;
  bottom: -6rem;
  width: 18rem;
  height: 18rem;
  border: 1px solid rgba(244, 170, 42, 0.45);
  border-radius: 50%;
  box-shadow: 0 0 0 2rem rgba(244, 170, 42, 0.08), 0 0 0 4rem rgba(244, 170, 42, 0.05);
  content: "";
}

.readout-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: #b8cdc1;
  font-family: Menlo, Consolas, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.signal-dot {
  display: inline-block;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--new);
  box-shadow: 0 0 0 0.28rem rgba(244, 170, 42, 0.18);
}

.readout-number {
  position: relative;
  z-index: 1;
  margin: 1rem 0 0.65rem;
  color: var(--white);
  font-size: clamp(3rem, 10.5vw, 7.4rem);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.09em;
  line-height: 0.92;
  white-space: nowrap;
}

.readout-label {
  position: relative;
  z-index: 1;
  max-width: 30ch;
  margin: 0;
  color: #c4d6ca;
  font-family: Menlo, Consolas, monospace;
  font-size: 0.79rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-row {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid #526f6d;
}

.metric-number {
  display: block;
  color: var(--new);
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}

.metric:nth-child(2) .metric-number {
  color: #70bcc5;
}

.metric-label {
  display: block;
  margin-top: 0.55rem;
  color: #b8cdc2;
  font-size: 0.65rem;
  line-height: 1.35;
}

.source-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.55rem;
  background: var(--panel-deep);
}

.source-card .eyebrow {
  margin: 0 0 2.5rem;
  color: var(--signal);
  font-size: 0.68rem;
  font-weight: 800;
}

.source-card h2,
.source-card h3 {
  margin-bottom: 0.8rem;
  font-size: clamp(1.7rem, 3vw, 2.55rem);
  letter-spacing: -0.055em;
}

.source-card p {
  margin: 0;
  color: var(--ink-soft);
}

.source-stamp {
  margin-top: 2.25rem !important;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--ink) !important;
  font-size: 0.67rem;
  line-height: 1.65;
}

.scroll-cue {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 2rem 0 0;
  color: var(--ink-soft);
  font-family: Menlo, Consolas, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.readout-source {
  position: relative;
  z-index: 1;
  margin: 1rem 0 0;
  padding-top: 0.8rem;
  border-top: 1px solid #526f6d;
  color: #b8cdc2;
  font-family: Menlo, Consolas, monospace;
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.45;
  text-transform: uppercase;
}

.scroll-cue::before {
  width: 3rem;
  height: 2px;
  background: var(--signal);
  content: "";
}

.reading-column {
  max-width: 900px;
  padding-bottom: 4rem;
}

.section {
  padding: 4rem 0;
  border-top: 2px solid var(--ink);
}

.section:first-child {
  padding-top: 3.5rem;
}

.section-number {
  margin: 0 0 0.9rem;
  color: var(--signal);
  font-size: 0.7rem;
  font-weight: 800;
}

.section h2 {
  max-width: 18ch;
  margin-bottom: 1.25rem;
  font-size: clamp(2.2rem, 5vw, 4.45rem);
  letter-spacing: -0.075em;
}

.section-intro {
  max-width: 64ch;
  margin-bottom: 2rem;
  color: var(--ink-soft);
  font-size: 1.12rem;
}

.diagram-card {
  padding: clamp(1.15rem, 3vw, 2rem);
  background: var(--panel);
}

.diagram-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.3rem;
}

.diagram-head strong {
  font-size: 1.15rem;
}

.diagram-head span {
  color: var(--ink-soft);
  font-family: Menlo, Consolas, monospace;
  font-size: 0.7rem;
  text-align: right;
  text-transform: uppercase;
}

.split-bar {
  display: flex;
  min-height: 72px;
  overflow: hidden;
  border: 2px solid var(--ink);
  background: var(--panel-deep);
}

.split-bar span {
  display: flex;
  align-items: center;
  min-width: 0;
  padding: 0 1rem;
  color: var(--ink);
  font-family: Menlo, Consolas, monospace;
  font-size: clamp(0.62rem, 1.6vw, 0.84rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-transform: uppercase;
}

.bar-new {
  flex: 0 0 47.1%;
  justify-content: flex-start;
  background: var(--new);
}

.bar-replacement {
  flex: 0 0 52.9%;
  justify-content: flex-end;
  background: var(--replacement);
  text-align: right;
}

.bar-foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.8rem;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.bar-foot strong {
  color: var(--ink);
}

.definition-callout {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  margin-top: 1.25rem;
  padding: 1.2rem 1.35rem;
  border-left: 0.65rem solid var(--signal);
  background: #f7ddd4;
}

.definition-callout strong {
  font-family: Menlo, Consolas, monospace;
  font-size: 0.73rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.definition-callout p {
  margin: 0;
}

.trend-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.trend-card {
  padding: 1.15rem;
  border: 2px solid var(--ink);
  background: var(--panel);
}

.trend-card .eyebrow {
  margin: 0 0 1.4rem;
  color: var(--ink-soft);
  font-size: 0.66rem;
}

.trend-value {
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.07em;
  line-height: 0.95;
}

.trend-card:last-child .trend-value {
  color: var(--replacement);
}

.trend-bar {
  height: 0.8rem;
  margin-top: 1.1rem;
  border: 1px solid var(--ink);
  background: var(--panel-deep);
}

.trend-fill {
  height: 100%;
  background: var(--replacement);
}

.w-14 {
  width: 14.3%;
}

.w-30 {
  width: 30%;
}

.w-53 {
  width: 52.9%;
}

.trend-note {
  margin: 1.5rem 0 0;
  color: var(--ink-soft);
}

.stock-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.66fr);
  gap: 1rem;
  align-items: stretch;
}

.stock-card {
  padding: 1.25rem;
  border: 2px solid var(--ink);
  background: var(--panel);
}

.stock-card h3,
.scope-card h3,
.limit-card h3 {
  margin-bottom: 0.55rem;
  font-size: 1.25rem;
  letter-spacing: -0.04em;
}

.stock-card p,
.scope-card p,
.limit-card p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.stock-bar {
  display: flex;
  height: 3.2rem;
  margin: 1.6rem 0 0.8rem;
  overflow: hidden;
  border: 2px solid var(--ink);
}

.stock-bar span {
  display: flex;
  align-items: center;
  padding: 0 0.8rem;
  font-family: Menlo, Consolas, monospace;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.stock-smart {
  flex: 0 0 75%;
  background: var(--replacement);
}

.stock-non-smart {
  flex: 0 0 25%;
  justify-content: flex-end;
  background: var(--new);
  text-align: right;
}

.stock-foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.scope-card {
  padding: 1.35rem;
  background: var(--ink);
  color: var(--paper);
}

.scope-card h3 {
  color: var(--new);
}

.scope-card p {
  color: #c4d6ca;
}

.scope-card .tiny-label {
  display: block;
  margin-top: 1.4rem;
  color: #85bbc0;
  font-size: 0.66rem;
}

.scope-card .tiny-label + p {
  margin-top: 0.25rem;
}

.definition {
  margin: 0 0 1.4rem;
  padding: 1.4rem 1.5rem;
  border-left: 0.65rem solid var(--replacement);
  background: var(--panel-deep);
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  line-height: 1.4;
}

.definition cite {
  display: block;
  margin-top: 0.8rem;
  color: var(--ink-soft);
  font-family: Menlo, Consolas, monospace;
  font-size: 0.7rem;
  font-style: normal;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.definition cite a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.scope-card.light,
.limit-card {
  background: var(--panel);
  color: var(--ink);
}

.scope-card.light h3,
.limit-card h3 {
  color: var(--ink);
}

.scope-card.light p,
.limit-card p {
  color: var(--ink-soft);
}

.limit-card {
  padding: 1.25rem;
  border: 2px solid var(--ink);
}

.limit-card ul {
  margin: 0.9rem 0 0;
  padding-left: 1.2rem;
}

.limit-card li + li {
  margin-top: 0.5rem;
}

.method-card {
  padding: clamp(1rem, 3vw, 1.6rem);
  background: var(--panel);
}

.table-caption {
  margin: 0 0 0.8rem;
  color: var(--signal);
  font-size: 0.68rem;
  font-weight: 800;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

th,
td {
  padding: 0.85rem 0.55rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--ink-soft);
  font-family: Menlo, Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

td {
  font-size: 0.95rem;
}

tbody tr:last-child td {
  border-bottom: 0;
  font-weight: 800;
}

.method-note {
  margin: 1.25rem 0 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.source-list {
  display: grid;
  gap: 0.75rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.source-list li {
  display: grid;
  grid-template-columns: 1.4rem minmax(0, 1fr);
  gap: 0.7rem;
  align-items: start;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
}

.source-list li::before {
  color: var(--signal);
  content: "↗";
  font-family: Menlo, Consolas, monospace;
  font-weight: 800;
}

.source-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 800;
}

.source-list small {
  display: block;
  margin-top: 0.2rem;
  color: var(--ink-soft);
}

.closing-note {
  margin: 2rem 0 0;
  padding: 1rem 1.15rem;
  border: 2px solid var(--ink);
  background: var(--new);
  font-weight: 700;
}

.site-footer {
  padding: 2rem 0 3.5rem;
  border-top: 2px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.footer-grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer p {
  margin: 0;
  color: #b8cdc1;
  font-size: 0.85rem;
}

.site-footer p a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.6rem 1rem;
  font-family: Menlo, Consolas, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--paper);
}

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

@media (max-width: 760px) {
  .wrap {
    width: min(100% - 1.35rem, 680px);
  }

  .masthead {
    align-items: center;
    flex-direction: row;
    justify-content: center;
    gap: 0.6rem;
    min-height: 64px;
    padding: 0.35rem 0;
  }

  .wordmark span {
    display: none;
  }

  .site-nav {
    justify-content: flex-end;
    gap: 0.3rem 0.55rem;
    font-size: 0.62rem;
  }

  .hero {
    padding: 2.2rem 0 2.1rem;
  }

  h1 {
    max-width: 14ch;
    margin-bottom: 1rem;
    font-size: clamp(2.75rem, 13vw, 5.25rem);
  }

  .deck {
    margin-bottom: 1.2rem;
    font-size: 1rem;
    line-height: 1.35;
  }

  .hero-grid,
  .stock-layout,
  .two-column {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 3rem 0;
  }

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

  .bar-foot,
  .stock-foot,
  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }

  .source-card .eyebrow {
    margin-bottom: 1.4rem;
  }
}

@media (max-width: 430px) {
  .readout-card {
    padding: 1rem;
  }

  .readout-topline {
    font-size: 0.62rem;
  }

  .readout-number {
    margin-top: 0.7rem;
    font-size: clamp(2.55rem, 13vw, 4.4rem);
  }

  .metric-row {
    gap: 0.65rem;
  }

  .metric-number {
    font-size: 1.42rem;
  }

  .metric-label {
    font-size: 0.58rem;
  }

  .split-bar span {
    padding: 0 0.55rem;
    font-size: 0.57rem;
  }

  th,
  td {
    padding-right: 0.25rem;
    padding-left: 0.25rem;
  }

  th {
    font-size: 0.59rem;
  }

  td {
    font-size: 0.79rem;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}