:root {
  --display-font:
    "IBM Plex Mono", "JetBrains Mono", "SFMono-Regular", "SF Mono", Menlo,
    Consolas, monospace;
  --body-font:
    "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica,
    Arial, sans-serif;
  --mono-font:
    "IBM Plex Mono", "JetBrains Mono", "SFMono-Regular", "SF Mono", Menlo,
    Consolas, monospace;

  --bg: #fafafa;
  --surface: #ffffff;
  --ink: #0a0a0a;
  --ink-soft: #525252;
  --ink-muted: #a3a3a3;
  --rule: rgba(10, 10, 10, 0.1);
  --rule-strong: rgba(10, 10, 10, 0.2);
  --accent: #dc2626;
  --accent-strong: #b91c1c;
  --accent-soft: #ef4444;
  --hl-bg: rgba(220, 38, 38, 0.18);
  --chart-line: #ef4444;
  --chart-fill: rgba(239, 68, 68, 0.12);
  --chart-axis: rgba(10, 10, 10, 0.08);
  color-scheme: light;
}

html[data-theme="dark"] {
  --bg: #0a0c10;
  --surface: #11141a;
  --ink: #f5f5f5;
  --ink-soft: #a3a3a3;
  --ink-muted: #6b6b6b;
  --rule: rgba(255, 255, 255, 0.08);
  --rule-strong: rgba(255, 255, 255, 0.18);
  --accent: #ef4444;
  --accent-strong: #fca5a5;
  --accent-soft: #f87171;
  --hl-bg: rgba(239, 68, 68, 0.2);
  --chart-line: #ef4444;
  --chart-fill: rgba(239, 68, 68, 0.16);
  --chart-axis: rgba(255, 255, 255, 0.1);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  font-family: var(--body-font);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  color: var(--ink);
  background: var(--bg);
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

h1,
h2,
p,
figure {
  padding: 0;
  margin: 0;
}

.page {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

/* Topbar */

.topbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.5rem;
  align-items: center;
  height: 4rem;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
}

.topbar__brand {
  display: inline-flex;
  gap: 0.7rem;
  align-items: center;
  font-family: var(--mono-font);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.01em;
  text-decoration: none;
}

.topbar__brand-mark {
  display: inline-flex;
  width: 1.85rem;
  height: 1.85rem;
}

.topbar__brand-mark svg {
  width: 100%;
  height: 100%;
}

.topbar__crumb {
  font-family: var(--mono-font);
  font-size: 0.72rem;
  color: var(--ink-soft);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.theme-toggle {
  display: inline-grid;
  grid-template-columns: 1fr;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  font: inherit;
  color: var(--ink);
  cursor: pointer;
  background: transparent;
  border: 1px solid var(--rule-strong);
  border-radius: 0;
  transition:
    color 140ms ease,
    border-color 140ms ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  color: var(--accent);
  outline: none;
  border-color: var(--accent);
}

.theme-toggle__icon {
  grid-area: 1 / 1;
  width: 1.05rem;
  height: 1.05rem;
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.theme-toggle[data-theme-value="light"] .theme-toggle__icon--sun,
.theme-toggle[data-theme-value="dark"] .theme-toggle__icon--moon {
  opacity: 0;
  transform: scale(0.55) rotate(-25deg);
}

/* Main */

.main {
  width: 100%;
  max-width: 78rem;
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.25rem, 4vw, 3rem)
    clamp(2.5rem, 5vw, 4rem);
  margin: 0 auto;
}

/* Hero */

.hero {
  display: grid;
  gap: 1rem;
  max-width: 56rem;
  padding-bottom: clamp(2rem, 4vw, 3rem);
}

.hero__title {
  font-family: var(--display-font);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 600;
  line-height: 1.02;
  color: var(--ink);
  letter-spacing: -0.03em;
}

.hero__title em {
  font-style: normal;
  color: var(--accent);
}

/* Excerpt */

.excerpt {
  display: grid;
  gap: 1.25rem;
  padding: clamp(1.75rem, 3vw, 2.5rem) 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.excerpt__head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: baseline;
  justify-content: space-between;
}

.excerpt__title {
  font-family: var(--mono-font);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.excerpt__source {
  display: inline-flex;
  gap: 0.4rem;
  align-items: center;
  padding-bottom: 0.1rem;
  font-family: var(--mono-font);
  font-size: 0.72rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-bottom: 1px dashed var(--rule-strong);
}

.excerpt__source:hover,
.excerpt__source:focus-visible {
  color: var(--accent);
  outline: none;
  border-bottom-color: var(--accent);
}

.policy {
  max-width: 60rem;
  font-family: var(--body-font);
  font-size: clamp(1.05rem, 1.3vw, 1.18rem);
  line-height: 1.7;
  color: var(--ink-soft);
}

.policy p {
  margin-bottom: 1.1rem;
}

.policy p:last-child {
  margin-bottom: 0;
}

.policy__num {
  display: inline-block;
  padding: 0.05rem 0.4rem;
  margin-right: 0.55rem;
  font-family: var(--mono-font);
  font-size: 0.72rem;
  font-weight: 600;
  vertical-align: 0.12em;
  color: var(--accent);
  letter-spacing: 0.04em;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}

/* Highlight terms */

.hl {
  display: inline;
  padding: 0.1em 0.22em;
  margin: 0 -0.05em;
  color: inherit;
  font-weight: 500;
  background-color: transparent;
  box-shadow: inset 3px 0 0 0 transparent;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  transition:
    background-color 600ms cubic-bezier(0.5, 0.05, 0.2, 1),
    color 240ms ease 200ms,
    box-shadow 600ms cubic-bezier(0.5, 0.05, 0.2, 1);
}

.hl[data-active="true"] {
  font-weight: 600;
  color: var(--ink);
  background-color: var(--hl-bg);
  box-shadow: inset 3px 0 0 0 var(--accent);
}

html[data-theme="dark"] .hl[data-active="true"] {
  color: #ffe4e4;
}

@media (prefers-reduced-motion: reduce) {
  .hl {
    transition: none;
  }
}

/* Ticker */

.ticker {
  display: grid;
  gap: 1rem;
  padding-top: clamp(2.5rem, 5vw, 4rem);
}

.ticker__crumb {
  font-family: var(--mono-font);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.quote {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.15rem;
  align-items: baseline;
}

.quote__price {
  font-family: var(--display-font);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 600;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -0.04em;
}

.quote__ccy {
  font-family: var(--mono-font);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.quote__chip {
  display: inline-flex;
  gap: 0.4rem;
  align-items: center;
  padding: 0.3rem 0.65rem;
  font-family: var(--mono-font);
  font-size: 0.85rem;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: 0.02em;
  background: var(--accent);
}

.quote__chip svg {
  width: 0.65rem;
  height: 0.65rem;
}

.quote__delta {
  font-family: var(--mono-font);
  font-size: 0.95rem;
  color: var(--accent);
  letter-spacing: 0.02em;
}

.chart {
  position: relative;
  width: 100%;
  padding: clamp(1rem, 2vw, 1.5rem) clamp(0.5rem, 1.5vw, 1rem);
  margin-top: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--rule);
}

.chart__svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 22rem;
}

.chart__svg .grid line {
  stroke: var(--chart-axis);
  stroke-width: 1;
}

.chart__svg .axis text {
  font-family: var(--mono-font);
  font-size: 13px;
  letter-spacing: 0.04em;
  fill: var(--ink-soft);
}

.chart__svg .area {
  opacity: 0;
  fill: var(--chart-fill);
  transition: opacity 700ms ease 600ms;
}

.chart__svg .line {
  fill: none;
  stroke: var(--chart-line);
  stroke-width: 2.1;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  transition: stroke-dashoffset 1600ms cubic-bezier(0.4, 0, 0.2, 1) 100ms;
}

.chart[data-revealed="true"] .area {
  opacity: 1;
}

.chart[data-revealed="true"] .line {
  stroke-dashoffset: 0;
}

.chart__svg .endpoint {
  opacity: 0;
  fill: var(--chart-line);
  transition: opacity 380ms ease 1900ms;
}

.chart[data-revealed="true"] .endpoint {
  opacity: 1;
}

.chart__svg .endpoint-pulse {
  opacity: 0.35;
  fill: var(--chart-line);
  transform-origin: center;
  animation: pulse 2.4s ease-in-out infinite;
  animation-play-state: paused;
}

.chart[data-revealed="true"] .endpoint-pulse {
  animation-play-state: running;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.35;
  }
  50% {
    transform: scale(1.7);
    opacity: 0;
  }
}

.chart__tooltip {
  position: absolute;
  top: clamp(0.85rem, 2vw, 1.4rem);
  right: clamp(0.85rem, 2vw, 1.4rem);
  display: grid;
  gap: 0.15rem;
  padding: 0.5rem 0.7rem;
  font-family: var(--mono-font);
  font-size: 0.78rem;
  color: var(--ink);
  text-align: right;
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  opacity: 0;
  transform: translateY(-0.25rem);
  transition:
    opacity 380ms ease 1700ms,
    transform 380ms ease 1700ms;
}

.chart[data-revealed="true"] .chart__tooltip {
  opacity: 1;
  transform: none;
}

.chart__tooltip b {
  font-weight: 600;
  color: var(--accent);
}

@media (prefers-reduced-motion: reduce) {
  .chart__svg .line,
  .chart__svg .area,
  .chart__svg .endpoint,
  .chart__tooltip {
    transition: none;
  }
  .chart__svg .endpoint-pulse {
    animation: none;
  }
}

/* Footer */

.bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 78rem;
  padding: clamp(2rem, 4vw, 3rem) clamp(1.25rem, 4vw, 3rem)
    clamp(1.5rem, 3vw, 2rem);
  margin: 0 auto;
  font-family: var(--mono-font);
  font-size: 0.72rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-top: 1px solid var(--rule);
}

.bottom a {
  padding-bottom: 0.05rem;
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed var(--rule-strong);
}

.bottom a:hover,
.bottom a:focus-visible {
  color: var(--accent);
  outline: none;
  border-bottom-color: var(--accent);
}

@media (max-width: 48rem) {
  .topbar {
    grid-template-columns: auto auto;
  }
  .topbar__crumb {
    display: none;
  }
}

@media (max-width: 36rem) {
  .quote {
    gap: 0.45rem 0.85rem;
  }
}