:root {
  --paper: #f7f3eb;
  --paper-strong: #fffaf0;
  --ink: #181713;
  --muted: #686258;
  --line: #d7d0c1;
  --line-strong: #b9ae9a;
  --carbon: #202833;
  --blue: #2758d4;
  --green: #28785f;
  --rust: #b7472a;
  --gold: #c28b1b;
  --shadow: 0 24px 70px rgba(32, 40, 51, 0.14);
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: "Newsreader", Georgia, serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(24, 23, 19, 0.035) 1px, transparent 1px) 0 0 / 72px 72px,
    linear-gradient(rgba(24, 23, 19, 0.026) 1px, transparent 1px) 0 0 / 72px 72px,
    var(--paper);
  font-family: var(--sans);
  letter-spacing: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,0.48), rgba(255,255,255,0) 34rem);
  z-index: -1;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  transform: translateY(-150%);
  padding: 10px 14px;
  background: var(--ink);
  color: var(--paper-strong);
  text-decoration: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 54px);
  border-bottom: 1px solid rgba(24, 23, 19, 0.08);
  background: rgba(247, 243, 235, 0.84);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  text-decoration: none;
}

.brand-mark {
  width: 18px;
  height: 18px;
  border: 2px solid var(--ink);
  box-shadow: inset 6px 0 0 var(--blue), inset 12px 0 0 var(--green);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a,
.button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  padding: 0 14px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a { color: var(--muted); }
.site-nav a:hover { color: var(--ink); }

.button {
  cursor: pointer;
  border-color: var(--ink);
  background: transparent;
  color: var(--ink);
  font-family: var(--sans);
}

.button.primary {
  color: var(--paper-strong);
  background: var(--ink);
}

.button.ghost {
  border-color: var(--line-strong);
}

.button.compact {
  min-height: 48px;
  align-self: end;
  background: var(--paper-strong);
}

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

.button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(39, 88, 212, 0.35);
  outline-offset: 2px;
}

.hero {
  min-height: calc(100vh - 78px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  padding: clamp(54px, 8vw, 108px) clamp(18px, 5vw, 76px) clamp(44px, 6vw, 76px);
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p { margin-top: 0; }

h1 {
  max-width: 960px;
  margin-bottom: 24px;
  font-family: var(--serif);
  font-size: clamp(44px, 6.4vw, 92px);
  line-height: 0.88;
  font-weight: 650;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 680px;
  color: #3e3931;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.45;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-panel {
  position: relative;
  padding: 22px;
  border: 1px solid var(--ink);
  background: var(--paper-strong);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, rgba(39, 88, 212, 0.08) 0 1px, transparent 1px 14px);
  pointer-events: none;
}

.hero-panel > * { position: relative; }

.hero-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line-strong);
  background: var(--line-strong);
}

.metric-tile {
  min-height: 138px;
  padding: 18px;
  background: rgba(255, 250, 240, 0.9);
}

.metric-tile strong {
  display: block;
  margin-bottom: 24px;
  color: var(--carbon);
  font-family: var(--mono);
  font-size: clamp(36px, 5vw, 62px);
  line-height: 0.9;
}

.metric-tile span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.signal-board {
  display: grid;
  grid-template-columns: repeat(15, 1fr);
  gap: 6px;
  margin-top: 20px;
}

.signal-board span {
  height: 52px;
  border: 1px solid rgba(24, 23, 19, 0.12);
  background: var(--paper);
  transform-origin: bottom;
  animation: pulse 4.8s ease-in-out infinite;
}

.signal-board span:nth-child(3n) { background: rgba(39, 88, 212, 0.18); animation-delay: -1.2s; }
.signal-board span:nth-child(4n) { background: rgba(40, 120, 95, 0.2); animation-delay: -2.1s; }
.signal-board span:nth-child(5n) { background: rgba(183, 71, 42, 0.18); animation-delay: -3.4s; }

@keyframes pulse {
  0%, 100% { transform: scaleY(0.35); opacity: 0.58; }
  45% { transform: scaleY(1); opacity: 1; }
}

.atlas-band,
.explorer,
.figures {
  padding: clamp(56px, 8vw, 104px) clamp(18px, 5vw, 76px);
  border-top: 1px solid var(--line);
}

.section-heading,
.explorer-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.45fr);
  gap: clamp(20px, 4vw, 48px);
  align-items: end;
  margin-bottom: 30px;
}

.section-heading h2,
.explorer-head h2 {
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: clamp(34px, 5vw, 72px);
  line-height: 0.98;
  font-weight: 650;
  letter-spacing: 0;
}

.section-heading p,
.explorer-head p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.rq-lanes {
  display: grid;
  gap: 16px;
}

.rq-lane {
  display: grid;
  grid-template-columns: minmax(180px, 0.35fr) minmax(0, 1fr);
  border: 1px solid var(--ink);
  background: var(--paper-strong);
}

.rq-label {
  padding: 22px;
  border-right: 1px solid var(--ink);
  background: var(--carbon);
  color: var(--paper-strong);
}

.rq-label strong {
  display: block;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 13px;
  text-transform: uppercase;
}

.rq-label span {
  display: block;
  color: rgba(255,250,240,0.74);
  font-size: 14px;
  line-height: 1.4;
}

.category-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.category-cell {
  min-height: 144px;
  padding: 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  background: linear-gradient(180deg, rgba(255,255,255,0.44), rgba(255,255,255,0));
}

.category-cell:hover { background: rgba(39, 88, 212, 0.08); }

.category-cell strong {
  display: block;
  margin-bottom: 18px;
  font-family: var(--mono);
  font-size: 28px;
}

.category-cell span {
  color: #36322c;
  font-weight: 700;
  line-height: 1.32;
}

.category-cell small {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-family: var(--mono);
}

.explorer { background: rgba(255, 250, 240, 0.52); }

.result-count {
  justify-self: end;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(240px, 1.25fr) repeat(3, minmax(150px, 0.45fr)) auto;
  gap: 12px;
  margin-bottom: 18px;
}

.search-box,
.select-box {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

input,
select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  padding: 0 12px;
  background: var(--paper-strong);
  color: var(--ink);
  font: 600 14px var(--sans);
}

.trend-row {
  display: flex;
  align-items: end;
  gap: 4px;
  min-height: 116px;
  margin: 24px 0;
  padding: 14px;
  border: 1px solid var(--line);
  background: rgba(247, 243, 235, 0.72);
  overflow-x: auto;
}

.trend-bar {
  min-width: 34px;
  display: grid;
  align-items: end;
  gap: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  text-align: center;
}

.trend-bar span {
  display: block;
  min-height: 8px;
  background: var(--blue);
}

.paper-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
  gap: 12px;
}

.paper-card {
  min-height: 210px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line-strong);
  background: var(--paper-strong);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.paper-card:hover {
  border-color: var(--ink);
  box-shadow: 0 16px 36px rgba(32, 40, 51, 0.1);
}

.paper-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
}

.paper-meta span {
  padding: 4px 7px;
  border: 1px solid var(--line);
  background: rgba(247, 243, 235, 0.8);
}

.paper-card h3 {
  margin: 0;
  font-size: 17px;
  line-height: 1.35;
  font-weight: 800;
}

.paper-category {
  margin-top: auto;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.paper-links a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line-strong);
  padding: 0 10px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
  text-decoration: none;
}

.paper-links a:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper-strong);
}

.empty-state {
  grid-column: 1 / -1;
  padding: 34px;
  border: 1px dashed var(--line-strong);
  color: var(--muted);
  text-align: center;
}

.data-figure-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.data-figure {
  min-height: 280px;
  padding: 18px;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.42), rgba(255,255,255,0)),
    var(--paper-strong);
}

.timeline-figure {
  grid-column: 1 / -1;
  min-height: 330px;
}

.figure-title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
}

.figure-title-row h3 {
  margin: 0;
  font-family: var(--mono);
  font-size: 14px;
  text-transform: uppercase;
}

.figure-title-row span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
}

.year-chart {
  min-height: 226px;
  display: flex;
  align-items: end;
  gap: 8px;
  overflow-x: auto;
  padding-top: 20px;
}

.corpus-year-bar {
  min-width: 54px;
  display: grid;
  grid-template-rows: 1fr auto auto;
  align-items: end;
  gap: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  text-align: center;
}

.corpus-year-bar span {
  width: 100%;
  display: block;
  border: 1px solid rgba(24, 23, 19, 0.16);
  background: linear-gradient(180deg, var(--blue), var(--green));
}

.corpus-year-bar strong {
  color: var(--ink);
  font-size: 11px;
}

.corpus-year-bar small {
  color: var(--muted);
}

.category-chart {
  display: grid;
  gap: 11px;
}

.chart-row {
  display: grid;
  grid-template-columns: minmax(145px, 1fr) minmax(90px, 0.9fr) 46px;
  align-items: center;
  gap: 10px;
}

.chart-label,
.venue-name {
  color: #302c26;
  font-size: 13px;
  font-weight: 800;
  line-height: 1.25;
}

.chart-track {
  height: 12px;
  border: 1px solid var(--line);
  background: rgba(247, 243, 235, 0.82);
  overflow: hidden;
}

.chart-track span {
  height: 100%;
  display: block;
  background: var(--row-color, var(--blue));
}

.chart-row strong {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12px;
  text-align: right;
}

.word-cloud {
  min-height: 214px;
  display: flex;
  align-content: center;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 13px;
  padding: 8px 0 2px;
}

.word-token {
  display: inline-flex;
  align-items: center;
  min-height: 1.12em;
  color: var(--word-color, var(--blue));
  font-family: var(--serif);
  line-height: 0.92;
  white-space: nowrap;
  transition: transform 160ms ease, color 160ms ease;
}

.word-token:hover {
  color: var(--ink);
  transform: translateY(-2px);
}

.to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 46px;
  height: 46px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper-strong);
  cursor: pointer;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 160ms ease, transform 160ms ease;
  z-index: 11;
}

.to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 26px clamp(18px, 5vw, 76px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.site-footer a { font-weight: 800; text-decoration: none; }
.site-footer a:hover { color: var(--ink); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

@media (max-width: 980px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .site-nav { justify-content: flex-start; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .section-heading,
  .explorer-head { grid-template-columns: 1fr; }
  .result-count { justify-self: start; }
  .toolbar { grid-template-columns: 1fr 1fr; }
  .button.compact { align-self: stretch; }
  .rq-lane { grid-template-columns: 1fr; }
  .rq-label { border-right: 0; border-bottom: 1px solid var(--ink); }
  .data-figure-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .site-nav a { min-height: 34px; padding: 0 8px; }
  h1 { font-size: clamp(38px, 12vw, 56px); }
  .metric-grid,
  .toolbar { grid-template-columns: 1fr; }
  .metric-tile { min-height: 116px; }
  .paper-list { grid-template-columns: 1fr; }
  .chart-row { grid-template-columns: 1fr; }
  .chart-row strong { text-align: left; }
  .word-cloud { align-content: start; }
  .signal-board { grid-template-columns: repeat(10, 1fr); }
  .hero-actions .button { width: 100%; }
}