:root {
  --paper: #f4f5f2;
  --ink: #111214;
  --red: #e92e27;
  --line: #cfd2cd;
  --muted: #686c72;
  --white: #fbfcfa;
  font-family: "Instrument Sans", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); }
a { color: inherit; }
button, select { font: inherit; }
button:focus-visible, select:focus-visible, a:focus-visible, .hour-point:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

.status-strip {
  min-height: 36px;
  padding: 9px clamp(18px, 4vw, 60px);
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: var(--white);
  font: 11px/1.4 "IBM Plex Mono", monospace;
  letter-spacing: .03em;
}
.status-strip span:last-child { color: #b9bbb7; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--red); }

.site-head {
  min-height: 92px;
  padding: 0 clamp(18px, 4vw, 60px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--ink);
}
.brand { display: flex; gap: 12px; align-items: center; text-decoration: none; }
.brand-mark {
  display: grid; place-items: center; width: 42px; height: 42px;
  color: white; background: var(--red); font-weight: 700; letter-spacing: -.07em;
}
.brand b, .brand small { display: block; }
.brand b { font-size: 18px; letter-spacing: -.03em; }
.brand small, .eyebrow, .section-number {
  font: 10px/1.4 "IBM Plex Mono", monospace;
  letter-spacing: .08em; text-transform: uppercase;
}
nav { display: flex; gap: 26px; font: 11px "IBM Plex Mono", monospace; text-transform: uppercase; }
nav a { text-decoration: none; border-bottom: 1px solid transparent; }
nav a:hover, nav a:focus-visible { border-color: var(--red); }

main, footer { margin-inline: clamp(18px, 4vw, 60px); }
.hero {
  min-height: 460px;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(220px, .45fr);
  align-items: end;
  gap: 48px;
  padding: 76px 0 56px 52px;
  border-bottom: 1px solid var(--ink);
}
.coordinate {
  position: absolute; inset: 0 auto 0 0; width: 28px;
  border-right: 1px solid var(--line);
  writing-mode: vertical-rl; transform: rotate(180deg);
  padding: 24px 6px; color: var(--muted);
  font: 9px "IBM Plex Mono", monospace; letter-spacing: .11em;
}
.hero h1 {
  max-width: 850px; margin: 12px 0 22px;
  font-size: clamp(52px, 7.2vw, 108px); line-height: .88;
  letter-spacing: -.075em; font-weight: 610;
}
.hero h1 em { color: var(--red); font-style: normal; }
.dek { max-width: 660px; margin: 0; color: var(--muted); font-size: 18px; line-height: 1.45; }
.headline-value { align-self: end; padding-bottom: 6px; text-align: right; }
.headline-value span { display: block; font-size: clamp(54px, 7vw, 92px); line-height: .85; letter-spacing: -.065em; }
.headline-value small { font: 10px "IBM Plex Mono", monospace; }

.board { border-bottom: 1px solid var(--ink); }
.board-head { padding: 42px 0 28px; display: flex; justify-content: space-between; align-items: end; }
.board-head h2 { margin: 4px 0 0; font-size: clamp(28px, 4vw, 48px); letter-spacing: -.05em; }
.date-controls { display: flex; align-items: stretch; border: 1px solid var(--ink); }
.board-actions { display: flex; align-items: stretch; gap: 8px; }
.date-controls label { display: grid; place-items: center; padding: 0 8px 0 12px; color: var(--muted); font: 9px "IBM Plex Mono", monospace; text-transform: uppercase; }
.date-controls button, .date-controls select {
  min-height: 40px; border: 0; border-left: 1px solid var(--ink); border-radius: 0;
  color: var(--ink); background: transparent; cursor: pointer;
  font: 10px "IBM Plex Mono", monospace;
}
.date-controls button { padding: 0 12px; }
.date-controls select { padding: 0 30px 0 8px; }
.date-controls button:active { transform: scale(.97); }
.date-controls button:disabled { cursor: not-allowed; color: var(--muted); opacity: .45; }
.compare-toggle {
  min-height: 42px; padding: 0 14px; border: 1px solid var(--ink); border-radius: 0;
  color: var(--ink); background: transparent; cursor: pointer;
  font: 10px "IBM Plex Mono", monospace;
}
.compare-toggle[aria-pressed="true"] { color: var(--paper); background: var(--ink); }
.compare-toggle:disabled { cursor: not-allowed; color: var(--muted); border-color: var(--line); opacity: .55; }
.compare-toggle:active:not(:disabled) { transform: scale(.97); }
.chart-wrap { position: relative; height: 340px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
#demand-chart { width: 100%; height: 100%; overflow: visible; }
.hour-point { fill: var(--paper); stroke: var(--red); stroke-width: 0; cursor: crosshair; }
.hour-point.selected { fill: var(--red); stroke-width: 2; }
.hour-cursor { pointer-events: none; }
.chart-tooltip { position: absolute; z-index: 3; pointer-events: none; padding: 8px 10px; color: white; background: var(--ink); font: 11px/1.3 "IBM Plex Mono", monospace; transform: translate(-50%, -115%); white-space: nowrap; }
.chart-tooltip.below { transform: translate(-50%, 18%); }
.chart-legend {
  position: absolute; z-index: 2; top: 14px; left: 18px; display: flex; gap: 16px;
  padding: 7px 9px; background: color-mix(in srgb, var(--paper) 88%, transparent);
  font: 9px "IBM Plex Mono", monospace;
}
.chart-legend span { display: flex; align-items: center; gap: 6px; }
.chart-legend i { width: 18px; height: 2px; background: var(--red); }
.chart-legend .legend-previous { background: var(--muted); }
.reading-line { display: grid; grid-template-columns: 40px 1fr 28px; gap: 16px; padding: 24px 0; align-items: start; border-bottom: 1px solid var(--line); }
.reading-line p { max-width: 840px; margin: 0; font-size: 16px; line-height: 1.45; }
.reading-index, .arrow { color: var(--red); font: 12px "IBM Plex Mono", monospace; }
.metric-rail { margin: 0; display: grid; grid-template-columns: repeat(5, 1fr); }
.metric-rail div { min-height: 120px; padding: 24px 20px 24px 0; border-right: 1px solid var(--line); }
.metric-rail div:not(:first-child) { padding-left: 20px; }
.metric-rail div:last-child { border: 0; }
.metric-rail dt { color: var(--muted); font: 10px "IBM Plex Mono", monospace; text-transform: uppercase; }
.metric-rail dd { margin: 18px 0 0; font-size: clamp(24px, 3vw, 38px); letter-spacing: -.04em; }
.metric-rail .sample-label { color: var(--red); font: 18px "IBM Plex Mono", monospace; letter-spacing: .04em; }

.method, .source { display: grid; grid-template-columns: 180px 1.2fr .8fr; gap: 48px; padding: 72px 0; border-bottom: 1px solid var(--ink); }
.method h2, .source h2 { margin: 0; font-size: clamp(36px, 5vw, 70px); line-height: .98; letter-spacing: -.06em; }
.method p:not(.section-number), .source p { max-width: 610px; color: var(--muted); line-height: 1.55; }
.method ol { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ink); }
.method li { padding: 13px 0; border-bottom: 1px solid var(--line); font-weight: 600; }
.method li span { display: inline-block; width: 42px; color: var(--red); font: 10px "IBM Plex Mono", monospace; }
.source-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; align-content: start; padding-top: 8px; }
.source-meta span { color: var(--muted); font: 10px "IBM Plex Mono", monospace; text-transform: uppercase; }
.source-meta b { text-align: right; font: 11px "IBM Plex Mono", monospace; }
.source-limit { font: 11px/1.5 "IBM Plex Mono", monospace; }

footer { min-height: 110px; display: flex; justify-content: space-between; align-items: center; font: 10px "IBM Plex Mono", monospace; }
.notice { position: fixed; right: 24px; bottom: 24px; max-width: 330px; padding: 16px; color: white; background: var(--ink); box-shadow: 0 10px 35px #11121433; font: 11px/1.5 "IBM Plex Mono", monospace; }

@media (max-width: 800px) {
  nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 60px; }
  .headline-value { text-align: left; }
  .board-head { align-items: start; gap: 24px; }
  .board-actions { flex-direction: column; align-items: stretch; }
  .metric-rail { grid-template-columns: repeat(2, 1fr); }
  .metric-rail div:nth-child(2) { border-right: 0; }
  .metric-rail div:nth-child(4) { border-right: 0; }
  .method, .source { grid-template-columns: 1fr; gap: 26px; }
  .section-number { border-bottom: 1px solid var(--line); padding-bottom: 10px; }
  footer { align-items: flex-start; flex-direction: column; justify-content: center; gap: 10px; }
}

@media (hover: hover) and (pointer: fine) {
  .date-controls button:not(:disabled):hover, .date-controls select:hover, .compare-toggle:not(:disabled):hover { color: var(--red); }
  .compare-toggle[aria-pressed="true"]:hover { color: var(--paper); background: var(--red); border-color: var(--red); }
}

@media (max-width: 520px) {
  .status-strip span:last-child { display: none; }
  .hero { padding-left: 35px; }
  .hero h1 { font-size: 51px; }
  .board-head { flex-direction: column; }
  .date-controls { width: 100%; }
  .board-actions { width: 100%; }
  .compare-toggle { width: 100%; }
  .date-controls select { min-width: 0; flex: 1; }
  .date-controls label { display: none; }
  .chart-wrap { height: 280px; }
  .chart-legend { top: 8px; left: 8px; flex-direction: column; gap: 6px; }
  .metric-rail { grid-template-columns: 1fr; }
  .metric-rail div { border-right: 0; border-bottom: 1px solid var(--line); padding-left: 0 !important; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}