:root {
  --paper: #f4ede1;
  --paper-strong: #fbf7ef;
  --ink: #0f1a24;
  --ink-soft: #243240;
  --line: rgba(15, 26, 36, 0.14);
  --line-strong: rgba(15, 26, 36, 0.3);
  --teal: #0c6a66;
  --teal-soft: rgba(12, 106, 102, 0.12);
  --copper: #b5662a;
  --copper-soft: rgba(181, 102, 42, 0.12);
  --rose: #9b3f34;
  --green: #176548;
  --shadow: 0 24px 48px rgba(15, 26, 36, 0.08);
  --radius: 22px;
  --radius-sm: 16px;
  --content-width: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top left, rgba(12, 106, 102, 0.14), transparent 32%),
    radial-gradient(circle at top right, rgba(181, 102, 42, 0.14), transparent 28%),
    linear-gradient(180deg, #efe6d8 0%, var(--paper) 32%, #f8f4ec 100%);
  color: var(--ink);
  font-family: "Source Serif 4", Georgia, serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(15, 26, 36, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 26, 36, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.22), transparent 88%);
}

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

button,
input {
  font: inherit;
}

.page-shell {
  position: relative;
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
  padding: 18px 0 64px;
}

.topbar {
  position: sticky;
  top: 16px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 28px;
  padding: 14px 18px;
  border: 1px solid rgba(251, 247, 239, 0.5);
  border-radius: 999px;
  background: rgba(15, 26, 36, 0.86);
  color: #f8f5ef;
  box-shadow: 0 14px 34px rgba(15, 26, 36, 0.18);
  backdrop-filter: blur(16px);
}

.brand,
.nav,
.button,
.eyebrow,
.panel-label,
.section-index,
.card-kicker,
.review-label,
.note-chip,
.section-meta,
.metric-label,
.metric-detail,
.signal-card,
.pill,
.slider-meta,
.noscript-banner {
  font-family: "Space Grotesk", "Helvetica Neue", sans-serif;
}

.brand {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  gap: 18px;
  color: rgba(248, 245, 239, 0.78);
  font-size: 0.92rem;
}

.nav a:hover,
.button:hover,
.review-card:hover {
  transition: 160ms ease;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--ink);
  color: #faf5ed;
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1;
}

.button:hover {
  transform: translateY(-1px);
}

.button--ghost {
  border-color: var(--line);
  background: transparent;
  color: var(--ink);
}

.topbar .button--ghost {
  border-color: rgba(248, 245, 239, 0.18);
  color: #faf5ed;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(300px, 0.95fr);
  gap: 24px;
  margin-bottom: 24px;
}

.hero-copy,
.hero-panel,
.card,
.signal-card,
.review-card {
  border: 1px solid var(--line);
  background: rgba(251, 247, 239, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero-copy {
  padding: 40px;
  border-radius: calc(var(--radius) + 4px);
}

.hero-panel {
  padding: 30px;
  border-radius: calc(var(--radius) + 4px);
  background:
    linear-gradient(180deg, rgba(15, 26, 36, 0.96), rgba(27, 39, 51, 0.98)),
    rgba(15, 26, 36, 0.94);
  color: #f6efe3;
}

.eyebrow,
.panel-label,
.section-index,
.card-kicker,
.review-label {
  margin: 0 0 10px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow,
.section-index,
.card-kicker,
.review-label {
  color: var(--copper);
}

.panel-label {
  color: rgba(246, 239, 227, 0.64);
}

h1,
h2,
h3,
strong {
  margin: 0;
  font-family: "Space Grotesk", "Helvetica Neue", sans-serif;
}

h1 {
  max-width: 10ch;
  font-size: clamp(3rem, 8vw, 5.3rem);
  line-height: 0.92;
  letter-spacing: -0.06em;
}

h2 {
  max-width: 14ch;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

h3 {
  font-size: 1.35rem;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.lede,
.section-summary,
.card-note,
.review-card p,
.signal-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.06rem;
  line-height: 1.58;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 22px;
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.note-chip {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
  font-weight: 500;
}

.metric-stack {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.metric-stack .hero-metric {
  padding: 18px;
  border: 1px solid rgba(246, 239, 227, 0.12);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
}

.hero-metric-value {
  margin: 6px 0;
  font-family: "Space Grotesk", "Helvetica Neue", sans-serif;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.05em;
}

.hero-metric-label,
.hero-metric-detail {
  color: rgba(246, 239, 227, 0.78);
}

.hero-metric-label {
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero-metric-detail {
  font-size: 0.92rem;
}

.signal-strip,
.idea-grid,
.review-grid {
  display: grid;
  gap: 18px;
}

.signal-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 58px;
}

.signal-card {
  padding: 20px 22px;
  border-radius: var(--radius-sm);
}

.signal-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.18rem;
}

.signal-card small {
  display: block;
  margin-top: 12px;
  color: var(--ink-soft);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
}

.section {
  margin-bottom: 66px;
  padding-top: 10px;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 18px 24px;
  align-items: end;
  margin-bottom: 24px;
}

.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.toggle-group,
.pill-group {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
}

.toggle-button,
.pill {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.toggle-button.is-active,
.pill.is-active {
  border-color: transparent;
  background: var(--ink);
  color: #f8f5ef;
  box-shadow: 0 8px 18px rgba(15, 26, 36, 0.14);
}

.section-meta {
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.grid-two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.grid-two--bottom {
  margin-top: 18px;
  align-items: stretch;
}

.card {
  padding: 24px;
  border-radius: var(--radius);
}

.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.card-note {
  max-width: 24ch;
  font-size: 0.96rem;
}

.chart-card,
.table-card,
.controls-card,
.metrics-card {
  min-height: 100%;
}

.chart-host {
  min-height: 314px;
}

.chart-host--compact {
  min-height: 270px;
}

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

.metric-grid--wide {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 18px;
}

.metric-card {
  padding: 16px 16px 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.52);
}

.metric-label {
  margin-bottom: 6px;
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.metric-value {
  margin-bottom: 6px;
  font-family: "Space Grotesk", "Helvetica Neue", sans-serif;
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.05em;
}

.metric-detail {
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.4;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

th {
  color: var(--ink-soft);
  font-family: "Space Grotesk", "Helvetica Neue", sans-serif;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

td {
  font-size: 0.98rem;
}

.idea-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 18px;
}

.idea-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.46);
}

.idea-card h3 {
  margin-bottom: 10px;
}

.idea-card p {
  margin: 0 0 14px;
  line-height: 1.56;
  color: var(--ink-soft);
}

.idea-risk {
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--ink);
}

.options-layout {
  align-items: stretch;
}

.options-panels {
  display: grid;
  gap: 18px;
}

.slider-group {
  display: grid;
  gap: 18px;
}

.slider-row {
  display: grid;
  gap: 8px;
}

.slider-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 600;
}

input[type="range"] {
  width: 100%;
  margin: 0;
  accent-color: var(--teal);
}

.review-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.review-card {
  display: block;
  padding: 22px;
  border-radius: var(--radius);
}

.review-card strong {
  display: block;
  margin-bottom: 10px;
  font-size: 1.16rem;
}

.review-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
}

.noscript-banner {
  position: fixed;
  right: 16px;
  bottom: 16px;
  max-width: 360px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(15, 26, 36, 0.9);
  color: #f8f5ef;
  box-shadow: var(--shadow);
}

.chart-svg {
  display: block;
  width: 100%;
  height: auto;
}

.chart-grid-line {
  stroke: rgba(15, 26, 36, 0.1);
  stroke-width: 1;
}

.chart-axis-line {
  stroke: rgba(15, 26, 36, 0.28);
  stroke-width: 1;
}

.chart-label {
  fill: rgba(36, 50, 64, 0.72);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
  color: var(--ink-soft);
  font-family: "Space Grotesk", "Helvetica Neue", sans-serif;
  font-size: 0.82rem;
}

.legend-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 999px;
}

@media (max-width: 1080px) {
  .hero,
  .section-head,
  .review-grid {
    grid-template-columns: 1fr;
  }

  .review-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .signal-strip,
  .idea-grid {
    grid-template-columns: 1fr;
  }

  .metric-grid--wide {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .page-shell {
    width: min(calc(100% - 20px), var(--content-width));
  }

  .topbar {
    flex-wrap: wrap;
    justify-content: center;
    border-radius: 26px;
  }

  .nav {
    justify-content: center;
    flex-wrap: wrap;
  }

  .hero-copy,
  .hero-panel,
  .card {
    padding: 20px;
  }

  .grid-two,
  .metric-grid,
  .review-grid,
  .metric-grid--wide {
    grid-template-columns: 1fr;
  }

  .control-row,
  .card-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .chart-host {
    min-height: 260px;
  }
}