:root {
  color-scheme: dark;
  --bg: #0f1116;
  --bg-soft: #151922;
  --panel: rgba(14, 17, 25, 0.72);
  --ink: #f3eee5;
  --muted: rgba(243, 238, 229, 0.72);
  --line: rgba(243, 238, 229, 0.16);
  --line-strong: rgba(243, 238, 229, 0.28);
  --hot: #ff6138;
  --amber: #ffbf1f;
  --blue: #5f88ff;
  --lime: #8ecf3a;
  --cyan: #6de2ff;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  font-family: "Iowan Old Style", "Palatino Linotype", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 18%, rgba(255, 97, 56, 0.18), transparent 22%),
    radial-gradient(circle at 88% 78%, rgba(95, 136, 255, 0.16), transparent 26%),
    linear-gradient(180deg, #11131a 0%, #0b0d12 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 42px 42px;
}

button {
  font: inherit;
}

.page-shell {
  position: relative;
  z-index: 1;
  width: min(1380px, calc(100vw - 24px));
  margin: 0 auto;
  padding: 20px 0 28px;
}

.masthead {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: start;
  margin-bottom: 18px;
}

.kicker,
.notes-label,
.tooltip-code,
.tooltip-stats dt,
.zone,
.axis-label,
.tick {
  margin: 0;
  color: var(--muted);
  font: 700 0.76rem/1.2 "Avenir Next", "Segoe UI", sans-serif;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.kicker {
  margin-bottom: 8px;
}

h1,
.tooltip h2 {
  font-family: "Avenir Next Condensed", "Arial Narrow", "Avenir Next", "Segoe UI", sans-serif;
}

h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(3.2rem, 8vw, 7rem);
  line-height: 0.88;
  letter-spacing: -0.075em;
}

.caption {
  margin: 10px 0 0;
  max-width: 620px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.4;
}

.notes-button,
.notes-close {
  appearance: none;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink);
  padding: 8px 12px;
  cursor: pointer;
  font: 700 0.72rem/1.2 "Avenir Next", "Segoe UI", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.notes-button:hover,
.notes-button:focus-visible,
.notes-close:hover,
.notes-close:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  outline: none;
}

.chart-stage {
  position: relative;
  min-height: calc(100vh - 180px);
}

.field-frame {
  position: relative;
  min-height: calc(100vh - 180px);
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.04), transparent),
    linear-gradient(90deg, rgba(255, 97, 56, 0.05) 0%, transparent 28%, transparent 72%, rgba(142, 207, 58, 0.05) 100%),
    linear-gradient(180deg, rgba(109, 226, 255, 0.03) 0%, transparent 34%, transparent 70%, rgba(255, 97, 56, 0.03) 100%),
    var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.field-frame::before,
.field-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.field-frame::before {
  background-image:
    linear-gradient(rgba(243, 238, 229, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(243, 238, 229, 0.05) 1px, transparent 1px);
  background-size: 10% 16.66%;
}

.field-frame::after {
  background:
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(243, 238, 229, 0.09) calc(50% - 1px), rgba(243, 238, 229, 0.09) calc(50% + 1px), transparent calc(50% + 1px)),
    linear-gradient(180deg, transparent calc(50% - 1px), rgba(243, 238, 229, 0.09) calc(50% - 1px), rgba(243, 238, 229, 0.09) calc(50% + 1px), transparent calc(50% + 1px));
}

.zone,
.axis-label,
.tick {
  position: absolute;
  z-index: 2;
}

.zone-clinical {
  top: 16px;
  left: 18px;
  color: rgba(255, 191, 31, 0.9);
}

.zone-waste {
  right: 18px;
  bottom: 18px;
  color: rgba(255, 97, 56, 0.9);
}

.axis-y {
  top: 18px;
  right: 18px;
}

.axis-x {
  left: 18px;
  bottom: 18px;
}

.tick-y {
  right: 18px;
}

.tick-y-top { top: 72px; }
.tick-y-mid { top: 50%; transform: translateY(-50%); }
.tick-y-low { bottom: 72px; }

.tick-x {
  bottom: 44px;
}

.tick-x-left { left: 14%; }
.tick-x-mid { left: 50%; transform: translateX(-50%); }
.tick-x-right { right: 14%; }

.mark-layer {
  position: absolute;
  inset: 0;
}

.mark {
  position: absolute;
  transform: translate(-50%, -50%);
  display: grid;
  gap: 6px;
  justify-items: center;
  border: none;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  padding: 0;
}

.mark:hover .mark-dot,
.mark:focus-visible .mark-dot,
.mark.is-active .mark-dot {
  transform: scale(1.2);
  box-shadow: 0 0 0 3px rgba(243, 238, 229, 0.18);
}

.mark:focus-visible {
  outline: none;
}

.mark-dot {
  width: var(--size);
  height: var(--size);
  border-radius: 999px;
  background: var(--tone);
  box-shadow: 0 0 0 1px rgba(10, 11, 17, 0.8);
  transition: transform 140ms ease, box-shadow 140ms ease;
}

.mark-code {
  color: rgba(243, 238, 229, 0.88);
  font: 700 0.7rem/1.1 "Avenir Next", "Segoe UI", sans-serif;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.55);
  white-space: nowrap;
}

.tooltip {
  position: absolute;
  z-index: 3;
  width: min(260px, calc(100vw - 40px));
  border: 1px solid var(--line-strong);
  background: rgba(8, 10, 15, 0.92);
  backdrop-filter: blur(10px);
  padding: 12px 12px 10px;
  pointer-events: none;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.4);
}

.tooltip[hidden] {
  display: none;
}

.tooltip h2 {
  margin: 4px 0 8px;
  font-size: 2rem;
  line-height: 0.92;
  letter-spacing: -0.05em;
}

.tooltip-stats {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 12px;
}

.tooltip-stats div {
  display: grid;
  gap: 2px;
}

.tooltip-stats dd {
  margin: 0;
  font-size: 1rem;
}

.notes-dialog {
  padding: 0;
  border: none;
  background: transparent;
}

.notes-dialog::backdrop {
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(6px);
}

.notes-card {
  width: min(560px, calc(100vw - 24px));
  border: 1px solid var(--line-strong);
  background: #12151d;
  color: var(--ink);
  padding: 18px;
  display: grid;
  gap: 12px;
}

.notes-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
}

.notes-card h2 {
  margin: 0;
  font-size: 2rem;
  line-height: 0.92;
  letter-spacing: -0.05em;
}

.notes-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.42;
}

@media (max-width: 900px) {
  .masthead {
    flex-direction: column;
  }

  .chart-stage,
  .field-frame {
    min-height: 72vh;
  }

  .tooltip {
    width: min(220px, calc(100vw - 32px));
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100vw - 16px, 100%);
    padding-top: 16px;
  }

  .axis-y,
  .tick-y {
    right: 10px;
  }

  .axis-x,
  .tick-x {
    left: 10px;
    right: auto;
    transform: none;
  }

  .tick-x-mid {
    left: 46%;
    transform: translateX(-50%);
  }

  .tick-x-right {
    left: auto;
    right: 10px;
  }

  .mark-code {
    font-size: 0.62rem;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}