@import url("https://fonts.googleapis.com/css2?family=Azeret+Mono:wght@400;500;700;800&family=Fraunces:opsz,wght@9..144,700;9..144,900&family=Noto+Serif+SC:wght@700;900&display=swap");

:root {
  --ink: #080906;
  --coal: #10120d;
  --panel: rgba(20, 22, 15, 0.82);
  --panel-solid: #151811;
  --paper: #f1eadb;
  --muted: #b9b19f;
  --line: rgba(241, 234, 219, 0.16);
  --line-strong: rgba(241, 234, 219, 0.34);
  --acid: #c6ff3d;
  --cyan: #32d6c0;
  --blue: #3d78ff;
  --ember: #ff6547;
  --amber: #f4b942;
  --shadow: rgba(0, 0, 0, 0.42);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 8%, rgba(198, 255, 61, 0.14), transparent 28rem),
    radial-gradient(circle at 84% 18%, rgba(255, 101, 71, 0.12), transparent 24rem),
    linear-gradient(135deg, #080906 0%, #12140f 42%, #060706 100%);
  color: var(--paper);
  font-family: "Azeret Mono", "SFMono-Regular", "Menlo", monospace;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(241, 234, 219, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(241, 234, 219, 0.09) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, black, transparent 86%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.16;
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.04) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(0,0,0,0.08) 0 1px, transparent 1px 7px);
  mix-blend-mode: overlay;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

#signal-canvas {
  position: fixed;
  inset: 0;
  z-index: -3;
  width: 100%;
  height: 100%;
}

.shell {
  width: min(1520px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0 44px;
}

.masthead {
  position: relative;
  min-height: auto;
  border: 1px solid var(--line);
  background:
    linear-gradient(110deg, rgba(8, 9, 6, 0.72), rgba(8, 9, 6, 0.12)),
    conic-gradient(from 210deg at 84% 34%, rgba(198, 255, 61, 0.2), transparent 22%, rgba(50, 214, 192, 0.16), transparent 46%);
  box-shadow: 0 24px 80px var(--shadow);
  overflow: hidden;
}

.masthead::before {
  content: "";
  position: absolute;
  right: -12%;
  top: -18%;
  width: 58%;
  aspect-ratio: 1;
  border: 1px solid rgba(198, 255, 61, 0.28);
  border-radius: 50%;
  background:
    linear-gradient(90deg, transparent 48%, rgba(198,255,61,.18) 49% 51%, transparent 52%),
    linear-gradient(0deg, transparent 48%, rgba(50,214,192,.12) 49% 51%, transparent 52%);
  transform: rotate(-12deg);
  animation: drift 18s linear infinite;
}

.masthead::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 160px;
  background: linear-gradient(to bottom, transparent, rgba(8, 9, 6, 0.8));
}

.topline,
.hero-grid,
.control-band,
.summary-grid,
.main-grid,
.evidence-grid,
.demo-grid,
.footer-band {
  position: relative;
  z-index: 1;
}

.topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 9, 6, 0.46);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
  text-decoration: none;
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--acid);
  background: var(--acid);
  color: var(--ink);
  box-shadow: 0 0 24px rgba(198, 255, 61, 0.32);
}

.status-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.status-strip span {
  border: 1px solid var(--line);
  padding: 8px 10px;
  background: rgba(241, 234, 219, 0.05);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.72fr);
  align-items: center;
  gap: clamp(22px, 4vw, 64px);
  min-height: auto;
  padding: clamp(24px, 4.4vw, 52px);
}

.hero-copy {
  max-width: 860px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--acid);
  font-size: 12px;
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 980px;
  font-family: "Fraunces", "Noto Serif SC", Georgia, serif;
  font-size: clamp(34px, 4.8vw, 68px);
  line-height: 1.04;
  font-weight: 900;
}

.hero-sub {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(15px, 1.35vw, 20px);
  line-height: 1.75;
}

.run-console {
  min-height: 280px;
  border: 1px solid rgba(198, 255, 61, 0.42);
  background:
    linear-gradient(180deg, rgba(198, 255, 61, 0.08), transparent),
    rgba(7, 10, 6, 0.72);
  box-shadow: 0 20px 64px rgba(0, 0, 0, 0.42), inset 0 0 34px rgba(198, 255, 61, 0.08);
  backdrop-filter: blur(20px);
}

.console-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--acid);
  font-size: 12px;
  text-transform: uppercase;
  font-weight: 800;
}

.pulse {
  width: 9px;
  height: 9px;
  background: var(--acid);
  box-shadow: 0 0 0 0 rgba(198, 255, 61, 0.8);
  animation: pulse 1.6s infinite;
}

pre {
  margin: 0;
  padding: 18px;
  white-space: pre-wrap;
  word-break: break-word;
  color: #dfffb6;
  font-size: 12px;
  line-height: 1.65;
}

.experiment-flow {
  position: relative;
  z-index: 1;
  margin: 18px 0;
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(198, 255, 61, 0.08), transparent 42%),
    rgba(8, 9, 6, 0.68);
  backdrop-filter: blur(22px);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.24);
  overflow: hidden;
}

.flow-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  padding: 22px;
  border-bottom: 1px solid var(--line);
}

.flow-heading h2 {
  font-family: "Fraunces", "Noto Serif SC", Georgia, serif;
  font-size: clamp(28px, 3.2vw, 48px);
  line-height: 1.02;
}

.flow-heading p:not(.eyebrow) {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.flow-steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.flow-step {
  border: 1px solid var(--line);
  background: rgba(241, 234, 219, 0.05);
  color: var(--muted);
  padding: 9px 11px;
  font-size: 12px;
  text-transform: uppercase;
  white-space: nowrap;
}

.flow-step.is-active {
  border-color: var(--acid);
  color: var(--ink);
  background: var(--acid);
  font-weight: 800;
}

.model-selector {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  padding: 16px;
}

.model-choice {
  position: relative;
  min-height: 188px;
  display: grid;
  grid-template-rows: auto auto auto 1fr auto;
  gap: 8px;
  width: 100%;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--accent), transparent 88%), transparent),
    rgba(241, 234, 219, 0.045);
  color: var(--paper);
  padding: 15px;
  text-align: left;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.model-choice::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: var(--accent);
  opacity: 0.82;
}

.model-choice:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent), white 18%);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--accent), transparent 80%), transparent),
    rgba(241, 234, 219, 0.07);
}

.model-choice.is-selected {
  border-color: var(--acid);
  box-shadow: inset 0 0 0 1px var(--acid), 0 20px 50px rgba(198, 255, 61, 0.11);
}

.choice-provider,
.choice-id,
.choice-meta,
.choice-demo {
  color: var(--muted);
  font-size: 11px;
}

.choice-provider,
.choice-demo {
  text-transform: uppercase;
}

.model-choice strong {
  font-size: 18px;
  line-height: 1.2;
}

.choice-id {
  overflow-wrap: anywhere;
}

.choice-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-self: end;
  gap: 7px;
}

.choice-meta span {
  border: 1px solid rgba(241, 234, 219, 0.11);
  padding: 6px;
  background: rgba(8, 9, 6, 0.34);
}

.choice-meta .is-complete {
  color: var(--acid);
}

.choice-demo {
  justify-self: start;
  border: 1px solid var(--line);
  padding: 5px 7px;
}

.selector-empty {
  margin: 0;
  color: var(--muted);
  padding: 18px;
}

.control-band {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin: 0;
  padding: 14px;
  border: 0;
  border-top: 1px solid var(--line);
  background: rgba(8, 9, 6, 0.62);
  backdrop-filter: blur(18px);
}

.task-tabs {
  display: flex;
  gap: 8px;
  flex: 1 1 auto;
}

.task-tab,
.replay-button {
  border: 1px solid var(--line-strong);
  color: var(--paper);
  background: rgba(241, 234, 219, 0.06);
  padding: 12px 16px;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.task-tab:hover,
.replay-button:hover {
  transform: translateY(-1px);
  border-color: var(--acid);
}

.task-tab.is-active {
  border-color: var(--acid);
  background: var(--acid);
  color: var(--ink);
  font-weight: 800;
}

.fx-control {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.fx-control input {
  width: 116px;
  border: 1px solid var(--line-strong);
  background: rgba(241, 234, 219, 0.08);
  color: var(--paper);
  padding: 12px 10px;
}

.flow-readout {
  min-width: min(100%, 320px);
  flex: 1 1 320px;
  display: grid;
  gap: 5px;
  border: 1px solid var(--line);
  background: rgba(241, 234, 219, 0.04);
  padding: 11px 13px;
}

.flow-readout span,
.flow-readout small {
  color: var(--muted);
  font-size: 11px;
}

.flow-readout span {
  text-transform: uppercase;
}

.flow-readout strong {
  color: var(--paper);
  font-size: 15px;
}

.replay-button {
  background: rgba(61, 120, 255, 0.16);
  border-color: rgba(61, 120, 255, 0.55);
}

.usage-summary {
  display: grid;
  gap: 14px;
  padding: 18px;
}

.usage-lines {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.usage-lines div,
.usage-empty {
  min-height: 74px;
  display: grid;
  align-content: center;
  gap: 6px;
  border: 1px solid rgba(198, 255, 61, 0.16);
  background: rgba(241, 234, 219, 0.045);
  padding: 12px;
}

.usage-lines span,
.usage-empty span,
.usage-raw summary {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
}

.usage-lines strong,
.usage-empty strong {
  color: var(--paper);
  font-size: 16px;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.usage-raw {
  border: 1px solid var(--line);
  background: rgba(8, 9, 6, 0.5);
}

.usage-raw summary {
  cursor: pointer;
  padding: 12px;
  list-style: none;
}

.usage-raw summary::-webkit-details-marker {
  display: none;
}

.usage-raw pre {
  max-height: 260px;
  overflow: auto;
  border-top: 1px solid var(--line);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.metric-tile,
.leaderboard-panel,
.detail-panel,
.prompt-panel,
.tests-panel,
.scatter-panel,
.preview-panel,
.trace-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(22px);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.26);
}

.metric-tile {
  min-height: 134px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.metric-label {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.metric-tile strong {
  display: block;
  margin-top: 14px;
  font-size: clamp(24px, 3.2vw, 42px);
  line-height: 1;
  color: var(--paper);
}

.metric-tile small {
  color: var(--muted);
  line-height: 1.45;
}

.main-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(320px, 0.7fr);
  gap: 18px;
}

.leaderboard-panel,
.detail-panel,
.prompt-panel,
.tests-panel,
.scatter-panel,
.preview-panel,
.trace-panel {
  overflow: hidden;
}

.panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px;
  border-bottom: 1px solid var(--line);
}

.panel-title h2 {
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(26px, 3vw, 44px);
  line-height: 1;
}

.panel-title.compact h2 {
  font-size: clamp(22px, 2.2vw, 32px);
}

.task-badge,
.pass-chip,
.prompt-chip,
.artifact-chip {
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  padding: 9px 11px;
  font-size: 12px;
  text-transform: uppercase;
}

.prompt-chip {
  text-transform: none;
}

.prompt-panel {
  margin: 18px 0;
}

.primary-prompt {
  margin-top: 0;
}

.prompt-body {
  display: grid;
  gap: 14px;
  padding: 20px;
}

.prompt-summary {
  max-width: 980px;
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.prompt-text {
  max-height: 360px;
  overflow: auto;
  border: 1px solid var(--line);
  background: rgba(7, 10, 6, 0.58);
  color: #f1eadb;
}

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

.model-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 920px;
}

th,
td {
  padding: 15px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  font-weight: 700;
}

td {
  color: var(--paper);
  font-size: 13px;
}

.model-row {
  cursor: pointer;
  transition: background 160ms ease;
}

.model-row:hover,
.model-row.is-selected {
  background: rgba(198, 255, 61, 0.08);
}

.model-cell {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 238px;
}

.model-dot {
  width: 12px;
  height: 42px;
  background: var(--accent);
  box-shadow: 0 0 24px color-mix(in srgb, var(--accent), transparent 48%);
}

.model-name {
  display: block;
  font-weight: 800;
}

.model-id {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
}

.test-dots {
  display: inline-flex;
  gap: 4px;
}

.test-dot {
  width: 9px;
  height: 9px;
  border: 1px solid rgba(241, 234, 219, 0.3);
  background: rgba(241, 234, 219, 0.08);
}

.test-dot.pass {
  background: var(--acid);
  border-color: var(--acid);
}

.test-dot.fail {
  background: var(--ember);
  border-color: var(--ember);
}

.token-pair,
.money-pair {
  display: grid;
  gap: 4px;
}

.token-pair small,
.money-pair small,
.latency-sub {
  color: var(--muted);
  font-size: 11px;
}

.value-bar {
  width: 108px;
  height: 8px;
  border: 1px solid var(--line-strong);
  background: rgba(241, 234, 219, 0.06);
  overflow: hidden;
}

.value-bar span {
  display: block;
  height: 100%;
  width: var(--value);
  background: linear-gradient(90deg, var(--ember), var(--amber), var(--acid));
}

.detail-panel {
  padding: 20px;
}

.selected-model span,
.detail-stats span {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.selected-model h2 {
  margin-top: 10px;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(32px, 4.2vw, 52px);
  line-height: 0.94;
}

.selected-model p {
  color: var(--muted);
  line-height: 1.65;
}

.token-stack {
  margin: 22px 0;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stack-bar {
  display: flex;
  height: 22px;
  width: 100%;
  border: 1px solid var(--line-strong);
  background: rgba(241, 234, 219, 0.06);
  overflow: hidden;
}

.stack-bar span {
  display: block;
  min-width: 2px;
}

.stack-input {
  width: var(--input);
  background: var(--blue);
}

.stack-output {
  width: var(--output);
  background: var(--acid);
}

.stack-cache {
  width: var(--cache);
  background: var(--cyan);
}

.stack-legend {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 10px;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
}

.stack-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.stack-legend i {
  width: 10px;
  height: 10px;
  display: inline-block;
}

.legend-input {
  background: var(--blue);
}

.legend-output {
  background: var(--acid);
}

.legend-cache {
  background: var(--cyan);
}

.detail-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.detail-stats div {
  border: 1px solid var(--line);
  padding: 13px;
  background: rgba(241, 234, 219, 0.04);
}

.detail-stats strong {
  display: block;
  margin-top: 8px;
  font-size: 20px;
}

.evidence-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 18px;
  margin-top: 18px;
}

.demo-grid {
  display: grid;
  margin: 18px 0;
}

.test-list {
  display: grid;
}

.test-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}

.test-item:last-child {
  border-bottom: 0;
}

.test-state {
  width: 14px;
  height: 14px;
  background: var(--acid);
  box-shadow: 0 0 18px rgba(198, 255, 61, 0.42);
}

.test-state.fail {
  background: var(--ember);
  box-shadow: 0 0 18px rgba(255, 101, 71, 0.42);
}

.test-item strong {
  display: block;
  font-size: 14px;
}

.test-item small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  line-height: 1.4;
}

.test-item code {
  color: var(--muted);
  font-size: 11px;
}

.scatter {
  position: relative;
  min-height: 348px;
  margin: 20px;
  border-left: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  background:
    linear-gradient(rgba(241, 234, 219, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(241, 234, 219, 0.06) 1px, transparent 1px);
  background-size: 25% 25%;
}

.scatter::before,
.scatter::after {
  position: absolute;
  color: var(--muted);
  font-size: 10px;
  text-transform: uppercase;
}

.scatter::before {
  content: "完成度";
  left: 8px;
  top: 8px;
}

.scatter::after {
  content: "成本";
  right: 8px;
  bottom: 8px;
}

.scatter-point {
  position: absolute;
  left: var(--x);
  bottom: var(--y);
  width: 18px;
  height: 18px;
  border: 2px solid var(--paper);
  background: var(--accent);
  transform: translate(-50%, 50%);
  box-shadow: 0 0 24px color-mix(in srgb, var(--accent), transparent 42%);
}

.scatter-point.is-selected {
  width: 26px;
  height: 26px;
  outline: 1px solid var(--acid);
  outline-offset: 5px;
}

.scatter-label {
  position: absolute;
  left: 22px;
  top: -6px;
  width: max-content;
  color: var(--paper);
  font-size: 10px;
  background: rgba(8, 9, 6, 0.76);
  border: 1px solid var(--line);
  padding: 3px 5px;
}

.preview-panel {
  min-height: 760px;
  background:
    linear-gradient(180deg, rgba(198, 255, 61, 0.06), transparent 34%),
    var(--panel);
}

.preview-title h2 {
  font-size: clamp(34px, 4.8vw, 64px);
}

.artifact-preview {
  padding: clamp(14px, 2vw, 24px);
}

.artifact-frame-shell {
  display: grid;
  gap: 14px;
}

.artifact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.artifact-frame {
  width: 100%;
  height: clamp(680px, 76vh, 980px);
  min-height: 680px;
  border: 1px solid var(--line-strong);
  background: #080906;
}

.empty-preview {
  min-height: clamp(480px, 58vh, 720px);
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 12px;
  padding: clamp(24px, 5vw, 72px);
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(135deg, rgba(255, 101, 71, 0.11), transparent 46%),
    rgba(8, 9, 6, 0.72);
  text-align: center;
}

.empty-preview strong {
  font-family: "Fraunces", "Noto Serif SC", Georgia, serif;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.05;
}

.empty-preview p {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.artifact-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  color: var(--ink);
  background: var(--acid);
  border: 1px solid var(--acid);
  padding: 10px 12px;
  text-decoration: none;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.artifact-link.secondary {
  color: var(--paper);
  background: rgba(241, 234, 219, 0.06);
  border-color: var(--line-strong);
}

.calculator-demo {
  max-width: min(680px, 100%);
  margin: 0 auto;
  border: 1px solid rgba(198, 255, 61, 0.35);
  background: #0d1209;
  box-shadow: 0 24px 80px rgba(198, 255, 61, 0.08);
}

.calc-display {
  min-height: 148px;
  display: grid;
  align-content: center;
  gap: 8px;
  padding: 18px;
  border-bottom: 1px solid var(--line);
  text-align: right;
}

.calc-expression {
  color: var(--muted);
  font-size: 13px;
  overflow-wrap: anywhere;
}

.calc-result {
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(56px, 7vw, 88px);
  line-height: 1;
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.calc-grid button {
  min-height: clamp(68px, 6vw, 92px);
  border: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(241, 234, 219, 0.06);
  color: var(--paper);
}

.calc-grid button:nth-child(4n) {
  border-right: 0;
  color: var(--acid);
}

.calc-grid button:hover {
  background: rgba(198, 255, 61, 0.13);
}

.calendar-demo {
  border: 1px solid rgba(50, 214, 192, 0.34);
  background: #0b1111;
  padding: clamp(16px, 2vw, 28px);
}

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

.calendar-head h3 {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: 34px;
}

.calendar-head span {
  color: var(--cyan);
  font-size: 12px;
  text-transform: uppercase;
}

.week-grid,
.day-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.week-grid span {
  padding: 8px 6px;
  color: var(--muted);
  font-size: 10px;
  text-transform: uppercase;
}

.day {
  min-height: clamp(72px, 7vw, 118px);
  padding: 8px;
  border: 1px solid rgba(241, 234, 219, 0.1);
  margin: -1px 0 0 -1px;
  background: rgba(241, 234, 219, 0.035);
}

.day.is-muted {
  color: rgba(241, 234, 219, 0.28);
}

.day.is-today {
  background: rgba(50, 214, 192, 0.12);
  outline: 1px solid var(--cyan);
  z-index: 1;
}

.event {
  display: block;
  margin-top: 7px;
  padding: 4px 5px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 9px;
  font-weight: 800;
}

.trace-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.trace-panel {
  margin-top: 18px;
}

.trace-panel summary {
  cursor: pointer;
  list-style: none;
}

.trace-panel summary::-webkit-details-marker {
  display: none;
}

.trace-panel .panel-title {
  border-bottom: 0;
}

.trace-panel[open] .panel-title {
  border-bottom: 1px solid var(--line);
}

.trace-toggle {
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  padding: 9px 11px;
  font-size: 12px;
  text-transform: uppercase;
}

.trace-panel[open] .trace-toggle {
  border-color: var(--acid);
  color: var(--acid);
}

.trace-list li {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}

.trace-list li:last-child {
  border-bottom: 0;
}

.trace-list time {
  color: var(--acid);
  font-size: 11px;
}

.trace-list strong {
  display: block;
  margin-bottom: 6px;
}

.trace-list span {
  color: var(--muted);
  line-height: 1.5;
  font-size: 12px;
}

.footer-band {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
  border: 1px solid var(--line);
  padding: 16px 18px;
  color: var(--muted);
  background: rgba(8, 9, 6, 0.62);
  font-size: 12px;
  text-transform: uppercase;
}

.is-replaying .model-row {
  animation: scan 900ms ease both;
}

.is-replaying .model-choice {
  animation: scan 900ms ease both;
}

.is-replaying .model-choice:nth-child(2) { animation-delay: 70ms; }
.is-replaying .model-choice:nth-child(3) { animation-delay: 140ms; }
.is-replaying .model-choice:nth-child(4) { animation-delay: 210ms; }
.is-replaying .model-choice:nth-child(5) { animation-delay: 280ms; }
.is-replaying .model-choice:nth-child(6) { animation-delay: 350ms; }
.is-replaying .model-choice:nth-child(7) { animation-delay: 420ms; }
.is-replaying .model-choice:nth-child(8) { animation-delay: 490ms; }
.is-replaying .model-choice:nth-child(9) { animation-delay: 560ms; }

.is-replaying .model-row:nth-child(2) { animation-delay: 70ms; }
.is-replaying .model-row:nth-child(3) { animation-delay: 140ms; }
.is-replaying .model-row:nth-child(4) { animation-delay: 210ms; }
.is-replaying .model-row:nth-child(5) { animation-delay: 280ms; }
.is-replaying .model-row:nth-child(6) { animation-delay: 350ms; }
.is-replaying .model-row:nth-child(7) { animation-delay: 420ms; }
.is-replaying .model-row:nth-child(8) { animation-delay: 490ms; }
.is-replaying .model-row:nth-child(9) { animation-delay: 560ms; }

@keyframes pulse {
  70% {
    box-shadow: 0 0 0 11px rgba(198, 255, 61, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(198, 255, 61, 0);
  }
}

@keyframes drift {
  to {
    transform: rotate(348deg);
  }
}

@keyframes scan {
  0% {
    background: rgba(198, 255, 61, 0);
  }
  35% {
    background: rgba(198, 255, 61, 0.17);
  }
  100% {
    background: transparent;
  }
}

@media (max-width: 1120px) {
  .hero-grid,
  .main-grid,
  .evidence-grid,
  .demo-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    align-items: start;
  }

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

  .flow-heading {
    flex-direction: column;
  }

  .flow-steps {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 18px, 1520px);
    padding-top: 9px;
  }

  .masthead {
    min-height: auto;
  }

  .topline {
    align-items: flex-start;
    flex-direction: column;
  }

  .status-strip {
    justify-content: flex-start;
  }

  .hero-grid {
    padding: 24px 18px 20px;
  }

  h1 {
    font-size: clamp(34px, 11vw, 48px);
  }

  .hero-sub {
    margin-top: 16px;
    font-size: 14px;
  }

  .run-console {
    display: none;
  }

  .control-band {
    align-items: stretch;
  }

  .task-tabs,
  .fx-control,
  .replay-button,
  .flow-readout {
    width: 100%;
  }

  .task-tab {
    flex: 1;
  }

  .model-selector {
    grid-template-columns: 1fr;
  }

  .choice-meta,
  .usage-lines {
    grid-template-columns: 1fr;
  }

  .fx-control {
    justify-content: space-between;
  }

  .summary-grid {
    grid-template-columns: 1fr;
  }

  .panel-title {
    align-items: flex-start;
    flex-direction: column;
  }

  .detail-stats {
    grid-template-columns: 1fr;
  }

  .test-item {
    grid-template-columns: auto 1fr;
  }

  .test-item code {
    grid-column: 2;
  }

  .scatter {
    min-height: 300px;
  }

  .artifact-preview {
    padding: 14px;
  }

  .calc-grid button {
    min-height: 58px;
  }

  .day {
    min-height: 58px;
    padding: 5px;
    font-size: 11px;
  }

  .event {
    font-size: 8px;
  }

  .trace-list li {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}