@import url("https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=IBM+Plex+Mono:wght@400;500;600&family=Source+Sans+3:wght@400;500;600;700&display=swap");

:root {
  --ink: #102b4d;
  --ink-deep: #08192d;
  --ink-soft: #38516c;
  --sky: #77bdd6;
  --sky-soft: #dceef3;
  --sage: #a9bd8d;
  --sage-soft: #e6eedf;
  --sun: #f8c83e;
  --sun-soft: #fff0b8;
  --coral: #ef957d;
  --coral-soft: #fbe2db;
  --paper: #f7f2ea;
  --paper-deep: #eee7db;
  --line: #d8d1c6;
  --line-strong: #bdb4a5;
  --muted: #6c7783;
  --white: #fffdf8;
  --danger: #a84336;
  --shadow: 0 1rem 2.6rem rgba(16, 43, 77, 0.08);
  --radius-card: 1.15rem;
  --radius-control: 0.55rem;
  --space-1: 0.35rem;
  --space-2: 0.6rem;
  --space-3: 0.9rem;
  --space-4: 1.2rem;
  --space-5: 1.6rem;
  --space-6: 2.1rem;
  --space-7: 3rem;
  --space-8: 4.2rem;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 20rem;
  background: var(--paper);
  color: var(--ink);
  font-family: "Source Sans 3", sans-serif;
  font-size: 100%;
  line-height: 1.45;
}

body {
  min-width: 20rem;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 84% 2%, rgba(119, 189, 214, 0.21), transparent 25rem),
    radial-gradient(circle at 8% 48%, rgba(169, 189, 141, 0.13), transparent 22rem),
    var(--paper);
}

button,
input,
select {
  font: inherit;
}

button,
select {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 0.15rem solid var(--coral);
  outline-offset: 0.18rem;
}

.page-grain {
  position: fixed;
  z-index: 10;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.13'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

.topbar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: min(100% - 3rem, 92rem);
  min-height: 4.8rem;
  margin: 0 auto;
  border-bottom: 0.0625rem solid rgba(16, 43, 77, 0.14);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.3rem;
  height: 2.3rem;
  border: 0.08rem solid var(--ink);
  border-radius: 0.7rem 0.7rem 0.7rem 0.2rem;
  background: var(--sun);
  color: var(--ink);
  transform: rotate(-5deg);
}

.brand-mark svg {
  width: 1.65rem;
  height: 1.65rem;
  transform: rotate(5deg);
}

.brand-name,
.brand-product {
  display: block;
}

.brand-name {
  font-family: "DM Serif Display", Georgia, serif;
  font-size: 1.18rem;
  letter-spacing: 0.01em;
}

.brand-product {
  margin-top: -0.15rem;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.61rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.topbar-meta {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.status-dot,
.footer-dot {
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--sun);
  box-shadow: 0 0 0 0.23rem rgba(248, 200, 62, 0.2);
}

.status-dot.is-online {
  background: var(--sage);
  box-shadow: 0 0 0 0.23rem rgba(169, 189, 141, 0.28);
}

.status-dot.is-error {
  background: var(--coral);
  box-shadow: 0 0 0 0.23rem rgba(239, 149, 125, 0.25);
}

.topbar-divider {
  width: 0.0625rem;
  height: 1.2rem;
  margin-inline: 0.45rem;
  background: var(--line);
}

.model-label {
  color: var(--ink);
}

.shell {
  position: relative;
  z-index: 1;
  width: min(100% - 3rem, 92rem);
  margin: 0 auto;
  padding-block: var(--space-8) var(--space-6);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(16rem, 0.8fr);
  gap: var(--space-8);
  align-items: end;
  padding-bottom: var(--space-7);
}

.eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--ink-soft);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1.3;
  text-transform: uppercase;
}

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

h1,
h2 {
  margin-bottom: 0;
  font-weight: 400;
}

h1 {
  max-width: 46rem;
  color: var(--ink);
  font-family: "DM Serif Display", Georgia, serif;
  font-size: clamp(3rem, 7vw, 6.6rem);
  letter-spacing: -0.055em;
  line-height: 0.93;
}

h1 em {
  color: var(--coral);
  font-style: italic;
}

h2 {
  font-family: "DM Serif Display", Georgia, serif;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.intro-lede {
  max-width: 31rem;
  margin: var(--space-5) 0 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.intro-aside {
  align-self: end;
  max-width: 22rem;
  padding: var(--space-4) 0 var(--space-1) var(--space-5);
  border-left: 0.18rem solid var(--sun);
}

.aside-label {
  margin-bottom: var(--space-2);
  color: var(--ink);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.aside-text {
  margin-bottom: var(--space-4);
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.license-chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding-inline: 0.65rem;
  border: 0.0625rem solid rgba(239, 149, 125, 0.55);
  border-radius: 999px;
  background: var(--coral-soft);
  color: var(--danger);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.61rem;
  line-height: 1.3;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(16rem, 0.72fr) minmax(0, 1.8fr);
  gap: var(--space-5);
  align-items: start;
}

.panel {
  border: 0.0625rem solid var(--line);
  border-radius: var(--radius-card);
  background: rgba(255, 253, 248, 0.82);
  box-shadow: var(--shadow);
}

.control-panel {
  position: sticky;
  top: var(--space-4);
  padding: var(--space-5);
}

.panel-heading,
.section-heading,
.next-card-topline,
.next-card-main,
.validation-heading,
.barrier-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.panel-heading {
  align-items: center;
  padding-bottom: var(--space-5);
  border-bottom: 0.0625rem solid var(--line);
}

.icon-button,
.notice-close {
  display: inline-grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  border: 0.0625rem solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--ink-soft);
}

.icon-button:hover,
.notice-close:hover {
  border-color: var(--ink);
  background: var(--sky-soft);
  color: var(--ink);
}

.icon-button svg {
  width: 1rem;
  height: 1rem;
}

.control-panel form {
  padding-top: var(--space-5);
}

.field-group {
  padding: 0;
  margin: var(--space-5) 0 0;
  border: 0;
}

.field-label {
  display: block;
  margin-bottom: 0.38rem;
  color: var(--ink);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.field-control {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.55rem 0.7rem;
  border: 0.0625rem solid var(--line-strong);
  border-radius: var(--radius-control);
  outline: none;
  background: var(--white);
  color: var(--ink);
}

.field-control:hover {
  border-color: var(--ink-soft);
}

.field-note {
  min-height: 1rem;
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.73rem;
}

.symbol-input {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.83rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.target-tabs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.45rem;
}

.target-tab {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-height: 2.65rem;
  padding: 0.55rem 0.65rem;
  border: 0.0625rem solid transparent;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--ink-soft);
  text-align: start;
}

.target-tab:hover {
  border-color: var(--line);
  background: var(--paper);
  color: var(--ink);
}

.target-tab.is-active {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--white);
}

.tab-symbol {
  position: relative;
  display: inline-block;
  width: 1rem;
  height: 1rem;
  flex: 0 0 1rem;
}

.tab-symbol-price::before,
.tab-symbol-price::after {
  position: absolute;
  content: "";
  display: block;
  width: 0.32rem;
  border-radius: 0.1rem;
  background: var(--sky);
}

.tab-symbol-price::before {
  height: 0.6rem;
  inset-block-end: 0;
  inset-inline-start: 0.08rem;
}

.tab-symbol-price::after {
  height: 0.9rem;
  inset-block-start: 0;
  inset-inline-end: 0.08rem;
}

.tab-symbol-vol {
  border: 0.14rem solid var(--sage);
  border-radius: 50%;
  transform: scaleX(0.52);
}

.tab-symbol-barrier {
  border-block: 0.12rem solid var(--coral);
}

.tab-symbol-barrier::after {
  position: absolute;
  content: "";
  inset-block: 0;
  inset-inline-start: 50%;
  border-inline-start: 0.12rem dashed var(--coral);
}

.control-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.barrier-fields {
  padding-top: var(--space-5);
  margin-top: var(--space-5);
  border-top: 0.0625rem solid var(--line);
}

.barrier-heading {
  align-items: baseline;
  margin-bottom: var(--space-2);
}

.barrier-heading .field-note {
  min-height: 0;
  margin: 0;
}

.input-with-suffix {
  position: relative;
}

.input-with-suffix .field-control {
  padding-inline-end: 1.8rem;
}

.input-with-suffix span {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-end: 0.7rem;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.73rem;
  transform: translateY(-50%);
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 2.85rem;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-control);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.primary-button {
  width: 100%;
  margin-top: var(--space-6);
  border: 0.0625rem solid var(--ink);
  background: var(--ink);
  color: var(--white);
}

.primary-button:hover {
  background: var(--ink-deep);
}

.primary-button svg,
.secondary-button svg {
  width: 1rem;
  height: 1rem;
}

.primary-button[disabled],
.secondary-button[disabled] {
  cursor: wait;
  opacity: 0.6;
}

.panel-footer {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-top: var(--space-5);
  margin-top: var(--space-5);
  border-top: 0.0625rem solid var(--line);
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.64rem;
}

.footer-dot {
  width: 0.38rem;
  height: 0.38rem;
  background: var(--sage);
  box-shadow: none;
}

.analysis-column {
  display: grid;
  gap: var(--space-5);
  min-width: 0;
}

.next-card {
  overflow: hidden;
  padding: var(--space-6);
  background:
    linear-gradient(135deg, rgba(16, 43, 77, 0.98), rgba(16, 43, 77, 0.94)),
    var(--ink);
  color: var(--white);
}

.next-card .eyebrow,
.next-card .freshness {
  color: rgba(255, 253, 248, 0.68);
}

.freshness {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.next-card-main {
  align-items: end;
  padding-block: var(--space-6) var(--space-5);
}

.next-symbol {
  margin-bottom: 0.4rem;
  color: var(--sky);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.next-value {
  margin-bottom: 0.45rem;
  color: var(--white);
  font-family: "DM Serif Display", Georgia, serif;
  font-size: clamp(3.4rem, 8vw, 6.9rem);
  letter-spacing: -0.06em;
  line-height: 0.82;
}

.next-date {
  margin: 0;
  color: rgba(255, 253, 248, 0.7);
  font-size: 0.87rem;
}

.direction-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.3rem;
  padding: 0.45rem 0.7rem;
  border: 0.0625rem solid rgba(255, 253, 248, 0.24);
  border-radius: 999px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  font-weight: 600;
}

.direction-badge.is-up {
  border-color: rgba(169, 189, 141, 0.75);
  background: rgba(169, 189, 141, 0.16);
  color: var(--sage);
}

.direction-badge.is-down {
  border-color: rgba(239, 149, 125, 0.75);
  background: rgba(239, 149, 125, 0.16);
  color: var(--coral);
}

.direction-badge.is-neutral {
  color: rgba(255, 253, 248, 0.72);
}

.direction-glyph {
  position: relative;
  display: block;
  width: 0.8rem;
  height: 0.8rem;
}

.direction-glyph::before {
  position: absolute;
  content: "";
  inset-inline: 0.1rem;
  inset-block-start: 50%;
  border-block-start: 0.12rem solid currentColor;
  transform: translateY(-50%);
}

.is-up .direction-glyph::after,
.is-down .direction-glyph::after {
  position: absolute;
  content: "";
  width: 0.42rem;
  height: 0.42rem;
  inset-block-start: 0.18rem;
  border-block-start: 0.12rem solid currentColor;
  border-inline-end: 0.12rem solid currentColor;
}

.is-up .direction-glyph::after {
  inset-inline-end: 0.07rem;
  transform: rotate(-45deg);
}

.is-down .direction-glyph::after {
  inset-block-start: 0.2rem;
  inset-inline-start: 0.07rem;
  transform: rotate(135deg);
}

.next-foot {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 0.0625rem solid rgba(255, 253, 248, 0.17);
}

.next-foot div {
  display: grid;
  gap: 0.25rem;
}

.next-foot span {
  color: rgba(255, 253, 248, 0.54);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.61rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.next-foot strong {
  overflow: hidden;
  color: var(--white);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chart-card,
.validation-card {
  padding: var(--space-5);
}

.section-heading {
  align-items: end;
  padding-bottom: var(--space-4);
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: end;
  gap: 0.7rem;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.63rem;
}

.chart-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-line,
.legend-band {
  display: inline-block;
  width: 1.15rem;
  height: 0.25rem;
  border-radius: 999px;
}

.legend-history {
  background: var(--ink);
}

.legend-forecast {
  background: var(--coral);
}

.legend-band {
  height: 0.6rem;
  border: 0.0625rem solid rgba(239, 149, 125, 0.38);
  background: var(--coral-soft);
}

.chart-wrap {
  position: relative;
  min-height: 20rem;
  border-top: 0.0625rem solid var(--line);
  border-bottom: 0.0625rem solid var(--line);
}

#forecast-chart {
  display: block;
  width: 100%;
  height: auto;
  min-height: 20rem;
  overflow: visible;
}

.chart-empty {
  position: absolute;
  inset: 50% auto auto 50%;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  transform: translate(-50%, -50%);
}

.chart-empty[hidden] {
  display: none;
}

.chart-grid-line {
  stroke: rgba(16, 43, 77, 0.1);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.chart-axis-label,
.chart-split-label {
  fill: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.03em;
}

.chart-split-line {
  stroke: var(--sun);
  stroke-dasharray: 4 5;
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.chart-band {
  fill: rgba(239, 149, 125, 0.18);
  stroke: none;
}

.chart-history-path,
.chart-forecast-path {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.6;
  vector-effect: non-scaling-stroke;
}

.chart-history-path {
  stroke: var(--ink);
}

.chart-forecast-path {
  stroke: var(--coral);
  stroke-dasharray: 1 0;
}

.chart-last-dot {
  fill: var(--ink);
  stroke: var(--white);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.chart-forecast-dot {
  fill: var(--coral);
  stroke: var(--white);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.chart-axis-note {
  display: flex;
  justify-content: space-between;
  padding-top: var(--space-2);
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.61rem;
  text-transform: uppercase;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.detail-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  min-height: 7.7rem;
  padding: var(--space-4);
}

.detail-icon {
  position: relative;
  display: grid;
  place-items: center;
  width: 2.3rem;
  height: 2.3rem;
  flex: 0 0 2.3rem;
  border-radius: 0.75rem;
}

.detail-icon-range {
  background: var(--coral-soft);
}

.detail-icon-range span {
  position: absolute;
  display: block;
  width: 0.18rem;
  border-radius: 999px;
  background: var(--coral);
}

.detail-icon-range span:nth-child(1) { height: 0.6rem; transform: translateX(-0.35rem); }
.detail-icon-range span:nth-child(2) { height: 1.05rem; }
.detail-icon-range span:nth-child(3) { height: 0.8rem; transform: translateX(0.35rem); }

.detail-icon-data {
  background: var(--sky-soft);
}

.detail-icon-data span {
  position: absolute;
  inset-block-end: 0.55rem;
  width: 0.25rem;
  border-radius: 0.08rem;
  background: var(--sky);
}

.detail-icon-data span:nth-child(1) { height: 0.55rem; transform: translateX(-0.38rem); }
.detail-icon-data span:nth-child(2) { height: 0.95rem; }
.detail-icon-data span:nth-child(3) { height: 0.72rem; transform: translateX(0.38rem); }

.detail-icon-guard {
  background: var(--sage-soft);
}

.detail-icon-guard::before {
  position: absolute;
  content: "";
  width: 1.15rem;
  height: 1.3rem;
  border: 0.13rem solid var(--sage);
  border-radius: 0.55rem 0.55rem 0.8rem 0.8rem;
}

.detail-icon-guard span {
  z-index: 1;
  width: 0.4rem;
  height: 0.2rem;
  border-block-end: 0.13rem solid var(--sage);
  border-inline-end: 0.13rem solid var(--sage);
  transform: rotate(45deg) translate(-0.05rem, -0.08rem);
}

.detail-label {
  margin-bottom: 0.28rem;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.61rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.detail-value {
  margin-bottom: 0.15rem;
  color: var(--ink);
  font-family: "DM Serif Display", Georgia, serif;
  font-size: 1.45rem;
  line-height: 1;
}

.detail-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.73rem;
}

.secondary-button {
  border: 0.0625rem solid var(--ink);
  background: transparent;
  color: var(--ink);
}

.secondary-button:hover {
  background: var(--sun-soft);
}

.validation-body {
  min-height: 7.2rem;
  padding: var(--space-4);
  border: 0.0625rem dashed var(--line-strong);
  border-radius: var(--radius-control);
  background: rgba(247, 242, 234, 0.55);
}

.validation-placeholder {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 5.2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.validation-placeholder p {
  max-width: 32rem;
  margin: 0;
}

.placeholder-rule {
  display: block;
  width: 2.8rem;
  height: 0.18rem;
  flex: 0 0 2.8rem;
  background: var(--sun);
}

.validation-results {
  display: grid;
  grid-template-columns: minmax(10rem, 0.75fr) minmax(0, 1.25fr);
  gap: var(--space-5);
  align-items: center;
}

.validation-feature {
  padding-right: var(--space-5);
  border-right: 0.0625rem solid var(--line);
}

.validation-feature .eyebrow {
  margin-bottom: var(--space-2);
}

.validation-number {
  margin: 0;
  color: var(--ink);
  font-family: "DM Serif Display", Georgia, serif;
  font-size: clamp(2.7rem, 6vw, 4.6rem);
  letter-spacing: -0.05em;
  line-height: 0.9;
}

.validation-caption {
  margin: var(--space-2) 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.metric-table {
  width: 100%;
  border-collapse: collapse;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
}

.metric-table th,
.metric-table td {
  padding: 0.5rem 0.2rem;
  border-bottom: 0.0625rem solid var(--line);
  text-align: end;
}

.metric-table th:first-child,
.metric-table td:first-child {
  text-align: start;
}

.metric-table th {
  color: var(--muted);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.metric-table td {
  color: var(--ink);
}

.metric-table tr:last-child td {
  border-bottom: 0;
}

.notice {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  max-width: 50rem;
  padding: var(--space-3) var(--space-4);
  margin: var(--space-5) auto 0;
  border: 0.0625rem solid rgba(239, 149, 125, 0.55);
  border-radius: var(--radius-control);
  background: var(--coral-soft);
  color: var(--danger);
  font-size: 0.84rem;
}

.notice[hidden] {
  display: none;
}

.notice-icon {
  display: inline-grid;
  place-items: center;
  width: 1.4rem;
  height: 1.4rem;
  flex: 0 0 1.4rem;
}

.notice-icon svg {
  width: 1.15rem;
  height: 1.15rem;
}

.notice-close {
  width: 1.7rem;
  height: 1.7rem;
  margin-left: auto;
  border: 0;
  color: currentColor;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-6);
  margin-top: var(--space-6);
  border-top: 0.0625rem solid var(--line);
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.61rem;
  letter-spacing: 0.03em;
}

@media (max-width: 64rem) {
  .intro {
    grid-template-columns: minmax(0, 1.3fr) minmax(15rem, 0.7fr);
    gap: var(--space-6);
  }

  .workspace-grid {
    grid-template-columns: minmax(15rem, 0.75fr) minmax(0, 1.55fr);
  }

  .next-card-main {
    align-items: center;
  }

  .next-value {
    font-size: clamp(3.1rem, 7vw, 5.6rem);
  }
}

@media (max-width: 50rem) {
  .topbar,
  .shell {
    width: min(100% - 2rem, 44rem);
  }

  .topbar-meta > span:first-of-type:not(.status-dot),
  .topbar-divider {
    display: none;
  }

  .intro {
    grid-template-columns: 1fr;
    gap: var(--space-5);
    padding-bottom: var(--space-6);
  }

  .intro-aside {
    max-width: 30rem;
    padding-left: var(--space-4);
  }

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

  .control-panel {
    position: static;
  }

  .target-tabs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .target-tab {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.35rem;
    min-height: 4.2rem;
  }

  .validation-results {
    grid-template-columns: 1fr;
  }

  .validation-feature {
    padding-right: 0;
    padding-bottom: var(--space-4);
    border-right: 0;
    border-bottom: 0.0625rem solid var(--line);
  }
}

@media (max-width: 37.5rem) {
  .topbar,
  .shell {
    width: min(100% - 1.4rem, 32rem);
  }

  .topbar {
    min-height: 4.2rem;
  }

  .topbar-meta {
    max-width: 6.6rem;
    font-size: 0.58rem;
    text-align: end;
  }

  .shell {
    padding-top: var(--space-7);
  }

  h1 {
    font-size: clamp(3rem, 16vw, 4.9rem);
  }

  .intro-lede {
    font-size: 0.95rem;
  }

  .control-panel,
  .next-card,
  .chart-card,
  .validation-card {
    padding: var(--space-4);
  }

  .next-card-main {
    display: block;
  }

  .direction-badge {
    margin-top: var(--space-4);
  }

  .next-foot {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .next-foot div {
    grid-template-columns: 7rem 1fr;
    align-items: baseline;
  }

  .section-heading {
    display: block;
  }

  .chart-legend {
    justify-content: start;
    margin-top: var(--space-3);
  }

  .signal-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .detail-card {
    min-height: 0;
  }

  .validation-heading .secondary-button {
    width: 100%;
    margin-top: var(--space-4);
  }

  .site-footer {
    display: grid;
    gap: 0.4rem;
  }
}

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