/* =============================================================
   PMEmo · Brutalist research terminal
   Pure mono · 1px grid · single signal-red accent
   ============================================================= */

@import url("https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,400;0,500;0,700;0,800;1,400;1,500&display=swap");

:root {
  --paper:   #fafaf7;
  --paper-2: #f1f1ec;
  --ink:     #0a0a0a;
  --ink-2:   #4a4a4a;
  --ink-3:   #8a8a86;
  --rule:    #d8d8d4;
  --rule-2:  #ebebe6;
  --signal:  #ee2200;
  --blue:    #0033ee;
  --green:   #117733;
  --amber:   #ee7700;

  --mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --cjk:     "PingFang SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --stack:   var(--mono), var(--cjk);

  --max:     1280px;
  --gutter:  clamp(16px, 3vw, 40px);
  --grid-h:  16px;
}

/* -------------------- reset / base -------------------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { background: var(--paper); }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--stack);
  font-size: 13.5px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  font-variant-ligatures: none;
  font-feature-settings: "ss01", "ss02", "zero";
  cursor: default;
}

::selection { background: var(--signal); color: var(--paper); }

a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 1px;
}
a:hover { color: var(--signal); border-color: var(--signal); }

button { font-family: inherit; cursor: pointer; }

/* -------------------- layout frame -------------------- */
.frame {
  max-width: var(--max);
  margin: 0 auto;
  border-left: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
  background: var(--paper);
  min-height: 100vh;
}

/* -------------------- masthead -------------------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
}
.masthead-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 32px;
  align-items: center;
  padding: 10px var(--gutter);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.masthead-brand {
  font-weight: 700;
  letter-spacing: 0.06em;
}
.masthead-brand .blink {
  color: var(--signal);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.masthead-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-self: end;
  font-weight: 500;
}
.masthead-nav a {
  color: var(--ink-2);
  border-bottom: 0;
  padding-bottom: 0;
}
.masthead-nav a:hover { color: var(--signal); }
.masthead-nav a span { color: var(--signal); margin-right: 2px; }
.masthead-meta {
  color: var(--ink-3);
  font-size: 11.5px;
  letter-spacing: 0.06em;
}

/* -------------------- hero -------------------- */
.hero {
  padding: 56px var(--gutter) 40px;
  border-bottom: 1px solid var(--ink);
}
.hero-prompt {
  color: var(--signal);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-prompt::before { content: "$ "; color: var(--ink); }
.hero-title {
  font-weight: 800;
  font-size: clamp(48px, 8.5vw, 112px);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin: 0 0 12px;
  text-transform: uppercase;
  word-spacing: -0.04em;
}
.hero-title .sep { color: var(--signal); }
.hero-title .ascii {
  display: block;
  font-size: 0.18em;
  font-weight: 400;
  color: var(--ink-3);
  letter-spacing: 0;
  white-space: pre;
  margin-top: 16px;
  line-height: 1.1;
}
.hero-tagline {
  margin: 24px 0 28px;
  max-width: 64ch;
  font-size: 14.5px;
  color: var(--ink);
  line-height: 1.6;
}
.hero-tagline .hl {
  background: var(--signal);
  color: var(--paper);
  padding: 0 4px;
  font-weight: 500;
}
.hero-meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 24px;
  font-size: 12.5px;
  color: var(--ink-2);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  padding: 14px 0;
}
.hero-meta dt {
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.hero-meta dd { margin: 0; color: var(--ink); }
.hero-meta dd a { color: var(--ink); }

/* -------------------- section -------------------- */
.section {
  padding: 0 var(--gutter);
  border-bottom: 1px solid var(--ink);
}
.section-head {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 24px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--ink);
  margin-bottom: 0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.section-head .num {
  color: var(--signal);
  font-weight: 700;
}
.section-head h2 {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.section-head .stamp {
  color: var(--ink-3);
  font-size: 11.5px;
  letter-spacing: 0.06em;
}
.section-body {
  padding: 28px 0 56px;
}
.section-intro {
  max-width: 78ch;
  margin: 0 0 32px;
  font-size: 14px;
  color: var(--ink);
  line-height: 1.65;
}
.section-intro .lbl {
  display: inline-block;
  background: var(--ink);
  color: var(--paper);
  padding: 1px 6px;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-right: 6px;
  vertical-align: 1px;
}

/* -------------------- key-value table -------------------- */
.kv {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-bottom: 32px;
}
.kv th, .kv td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule);
  vertical-align: baseline;
}
.kv tr:last-child th, .kv tr:last-child td { border-bottom: 0; }
.kv th {
  color: var(--ink-3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11.5px;
  width: 220px;
}
.kv td b {
  color: var(--ink);
  font-weight: 700;
}
.kv .num {
  color: var(--signal);
  font-weight: 700;
  font-feature-settings: "tnum";
}

/* almanac as one big table-like grid */
.almanac {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--ink);
  margin-bottom: 32px;
}
@media (max-width: 880px) { .almanac { grid-template-columns: repeat(2, 1fr); } }
.almanac-cell {
  padding: 14px 16px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.almanac-cell:nth-child(4n) { border-right: 0; }
.almanac-cell:nth-last-child(-n+4) { border-bottom: 0; }
@media (max-width: 880px) {
  .almanac-cell { border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
  .almanac-cell:nth-child(2n) { border-right: 0; }
  .almanac-cell:nth-last-child(-n+2) { border-bottom: 0; }
}
.almanac-cell .label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}
.almanac-cell .label::before { content: "// "; }
.almanac-cell .num {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-top: 6px;
  font-feature-settings: "tnum";
}
.almanac-cell .num small {
  font-size: 0.42em;
  color: var(--signal);
  font-weight: 700;
  margin-left: 2px;
}

/* -------------------- figure -------------------- */
.figure {
  border: 1px solid var(--ink);
  background: var(--paper);
  margin-bottom: 24px;
}
.figure .fig-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: baseline;
  padding: 10px 14px;
  border-bottom: 1px solid var(--ink);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.figure .fig-head .id {
  color: var(--signal);
  font-weight: 700;
}
.figure .fig-head h3 {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink);
}
.figure .fig-head .stamp {
  color: var(--ink-3);
  font-size: 11px;
}
.figure .fig-caption {
  padding: 6px 14px 0;
  font-size: 12px;
  color: var(--ink-2);
  line-height: 1.55;
}
.figure .chart {
  width: 100%;
  padding: 6px 4px 4px;
}

/* layout helpers */
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.cols-2-uneven { display: grid; grid-template-columns: 1.6fr 1fr; gap: 24px; }
.cols-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
@media (max-width: 920px) {
  .cols-2, .cols-2-uneven, .cols-3 { grid-template-columns: 1fr; }
}

/* -------------------- VA side panel -------------------- */
.va-side {
  border: 1px solid var(--ink);
  padding: 0;
}
.va-side-head {
  background: var(--ink);
  color: var(--paper);
  padding: 8px 12px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.va-side-head::before { content: "» "; color: var(--signal); }
.va-side-body { padding: 16px 14px; }
.va-side-body h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.va-side-body .va-quad {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid currentColor;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
}
.va-side-body .va-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 18px;
  margin: 16px 0;
}
.va-side-body .va-stats div {
  font-size: 11px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.va-side-body .va-stats div b {
  display: block;
  font-size: 17px;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0;
  text-transform: none;
  margin-top: 2px;
  font-feature-settings: "tnum";
}
.va-side-body .muted {
  font-size: 12px;
  color: var(--ink-2);
  line-height: 1.55;
  margin: 0;
}

/* -------------------- tracklist -------------------- */
.tracklist {
  border: 1px solid var(--ink);
  margin-bottom: 28px;
}
.tracklist .tl-head {
  display: grid;
  grid-template-columns: 60px 1.6fr 1.4fr 90px 90px 30px;
  gap: 14px;
  padding: 8px 14px;
  background: var(--ink);
  color: var(--paper);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.tracklist .tl-head span:nth-child(1) { color: var(--signal); }
.track {
  display: grid;
  grid-template-columns: 60px 1.6fr 1.4fr 90px 90px 30px;
  gap: 14px;
  padding: 14px;
  border-top: 1px solid var(--rule);
  cursor: pointer;
  align-items: baseline;
  transition: background 0.1s linear;
}
.track:first-of-type { border-top: 0; }
@media (max-width: 760px) {
  .tracklist .tl-head, .track { grid-template-columns: 40px 1fr 50px; }
  .tracklist .tl-head span:nth-child(3),
  .tracklist .tl-head span:nth-child(4),
  .tracklist .tl-head span:nth-child(5),
  .track .t-artist, .track .t-v, .track .t-a { display: none; }
}
.track:hover { background: var(--paper-2); }
.track.active {
  background: var(--ink);
  color: var(--paper);
}
.track .t-num {
  font-size: 12px;
  color: var(--ink-3);
  font-weight: 500;
}
.track.active .t-num { color: var(--signal); }
.track .t-title {
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.track .t-artist {
  font-size: 12.5px;
  color: var(--ink-2);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.track.active .t-artist { color: #c4c4be; }
.track .t-v, .track .t-a {
  font-size: 11px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.track .t-v b, .track .t-a b {
  display: inline-block;
  margin-left: 6px;
  font-size: 13.5px;
  color: var(--signal);
  font-weight: 700;
  font-feature-settings: "tnum";
  letter-spacing: 0;
}
.track.active .t-v b, .track.active .t-a b { color: var(--paper); }
.track .t-arrow {
  text-align: right;
  color: transparent;
  transition: color 0.1s linear, transform 0.1s linear;
}
.track:hover .t-arrow { color: var(--signal); transform: translateX(4px); }
.track.active .t-arrow { color: var(--signal); }

/* -------------------- detail card -------------------- */
.detail {
  border: 1px solid var(--ink);
  padding: 0;
}
.detail-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: end;
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--ink);
}
.detail-title {
  margin: 0;
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}
.detail-title::before {
  content: "[";
  color: var(--signal);
  margin-right: 4px;
  font-weight: 400;
}
.detail-title::after {
  content: "]";
  color: var(--signal);
  margin-left: 4px;
  font-weight: 400;
}
.detail-sub {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--ink-2);
}
.detail-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}
.detail-meta .dot {
  width: 8px; height: 8px;
  display: inline-block;
  margin-right: 6px;
  vertical-align: 1px;
}
.audio-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--ink);
  background: var(--paper-2);
}
.audio-row .audio-tag {
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper);
  background: var(--signal);
  padding: 6px 8px;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  min-width: 64px;
}
audio {
  width: 100%;
  height: 32px;
  filter: grayscale(1) contrast(1.05);
}
.detail-charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--ink);
}
@media (max-width: 980px) { .detail-charts { grid-template-columns: 1fr; } }
.detail-charts > div { padding: 14px 16px; }
.detail-charts > div + div { border-left: 1px solid var(--ink); }
@media (max-width: 980px) {
  .detail-charts > div + div { border-left: 0; border-top: 1px solid var(--ink); }
}
.detail-charts .sub-head {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  margin-bottom: 8px;
}
.detail-charts .sub-head b {
  color: var(--signal);
  margin-right: 6px;
}
.detail-charts .chart { height: 280px; }

.detail-text {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
}
@media (max-width: 1080px) { .detail-text { grid-template-columns: 1fr; } }
.text-block {
  padding: 14px 16px;
  border-left: 1px solid var(--ink);
}
.text-block:first-child { border-left: 0; }
@media (max-width: 1080px) {
  .text-block { border-left: 0; border-top: 1px solid var(--ink); }
  .text-block:first-child { border-top: 0; }
}
.text-block .lbl {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--signal);
  font-weight: 700;
  margin-bottom: 8px;
  display: block;
}
.text-block .lbl::before { content: ">> "; }
.text-block .text-body {
  max-height: 240px;
  overflow-y: auto;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ink-2);
  padding-right: 6px;
}
.text-block .text-body p {
  margin: 0 0 6px;
  word-break: break-word;
}
.text-block .text-body::-webkit-scrollbar { width: 4px; }
.text-block .text-body::-webkit-scrollbar-track { background: var(--paper-2); }
.text-block .text-body::-webkit-scrollbar-thumb { background: var(--ink-3); }

/* -------------------- words / clouds -------------------- */
.cloud-card .chart { height: 360px; padding-top: 10px; }

/* -------------------- ML / quiz -------------------- */
.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.result-table th, .result-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule);
}
.result-table th {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 700;
  border-bottom: 1px solid var(--ink);
}
.result-table td.num {
  color: var(--signal);
  font-weight: 700;
  font-feature-settings: "tnum";
}

.bullet {
  list-style: none;
  padding: 0;
  margin: 0;
}
.bullet li {
  padding: 12px 0 12px 38px;
  border-bottom: 1px dashed var(--rule);
  position: relative;
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.6;
  counter-increment: bul;
}
.bullet { counter-reset: bul; }
.bullet li:last-child { border-bottom: 0; }
.bullet li::before {
  content: "[" counter(bul, decimal-leading-zero) "]";
  position: absolute;
  left: 0; top: 12px;
  font-size: 11px;
  color: var(--signal);
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* quiz */
.quiz-card .quiz {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
}
@media (max-width: 980px) { .quiz-card .quiz { grid-template-columns: 1fr; } }
.quiz-controls {
  padding: 18px 18px 20px;
  border-right: 1px solid var(--ink);
}
@media (max-width: 980px) {
  .quiz-controls { border-right: 0; border-bottom: 1px solid var(--ink); }
}
.quiz-controls .step {
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
  font-weight: 700;
  margin: 14px 0 8px;
}
.quiz-controls .step:first-child { margin-top: 0; }
.quiz-pick {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--ink);
}
.quiz-pick button {
  text-align: left;
  background: var(--paper);
  border: 0;
  border-bottom: 1px solid var(--rule);
  padding: 10px 12px;
  font-family: inherit;
  font-size: 13px;
  color: var(--ink);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: baseline;
  cursor: pointer;
}
.quiz-pick button:last-child { border-bottom: 0; }
.quiz-pick button:hover { background: var(--paper-2); }
.quiz-pick button .pick-num {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  font-weight: 700;
}
.quiz-pick button .pick-quad {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.quiz-pick button.active {
  background: var(--ink);
  color: var(--paper);
}
.quiz-pick button.active .pick-num { color: var(--signal); }
.quiz-pick button.active .pick-quad { color: #c4c4be; }
.quiz-result {
  margin-top: 14px;
  padding: 12px 14px;
  background: var(--paper-2);
  border-left: 4px solid var(--signal);
  font-size: 12.5px;
  color: var(--ink);
  line-height: 1.6;
}
.quiz-result b {
  color: var(--signal);
  font-weight: 700;
  font-feature-settings: "tnum";
}
.quiz-plot-wrap { padding: 18px; }
#quiz-plot { width: 100%; height: 380px; }

/* -------------------- footer -------------------- */
.colophon {
  padding: 32px var(--gutter) 24px;
  border-top: 1px solid var(--ink);
  background: var(--paper);
  font-size: 11.5px;
  color: var(--ink-2);
}
.colophon-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
}
@media (max-width: 880px) { .colophon-grid { grid-template-columns: 1fr; } }
.colophon h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--signal);
  margin: 0 0 8px;
  font-weight: 700;
}
.colophon h4::before { content: "// "; color: var(--ink-3); }
.colophon p { margin: 0 0 4px; }
.colophon .imprint {
  font-size: 14px;
  color: var(--ink);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}
.colophon .imprint .blink { color: var(--signal); animation: blink 1.1s steps(1) infinite; }
.foot-bar {
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px dashed var(--rule);
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* -------------------- scrollbar -------------------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: var(--ink); }
::-webkit-scrollbar-thumb:hover { background: var(--signal); }

/* -------------------- ascii decoration -------------------- */
.ascii-rule {
  font-family: var(--mono);
  white-space: pre;
  color: var(--ink-3);
  font-size: 10px;
  line-height: 1;
  overflow: hidden;
  user-select: none;
}