:root {
  --sc-bg: #f5f8f9;
  --sc-bg-soft: #e8eef1;
  --sc-panel: #ffffff;
  --sc-panel-strong: #ffffff;
  --sc-panel-alt: rgba(232, 238, 241, 0.9);
  --sc-ink: #05252f;
  --sc-muted: #5c6b72;
  --sc-line: rgba(3, 45, 66, 0.12);
  --sc-line-strong: rgba(3, 45, 66, 0.20);
  --sc-accent: #0f6b34;
  --sc-accent-soft: rgba(98, 216, 78, 0.14);
  --sc-distractor: #b08a34;
  --sc-distractor-soft: rgba(176, 138, 52, 0.12);
  --sc-history: #52616a;
  --sc-future: #1f9d4d;
  --sc-axis: rgba(5, 37, 48, 0.42);
  --sc-shadow: 0 18px 42px rgba(3, 45, 66, 0.08);
  --sc-radius-lg: 18px;
  --sc-radius-md: 14px;
  --sc-radius-sm: 10px;
  --sc-max: 1180px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  color: var(--sc-ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--sc-bg);
  -webkit-font-smoothing: antialiased;
}

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

button,
input {
  font: inherit;
}

.sc-shell {
  min-height: 100vh;
}

.sc-tabs-wrap {
  padding: 18px 22px 0;
}

.sc-nav {
  max-width: var(--sc-max);
  margin: 0 auto;
  display: flex;
  gap: 20px;
  border-bottom: 1px solid var(--sc-line);
}

.sc-nav-link {
  position: relative;
  padding: 10px 4px 14px;
  color: rgba(34, 47, 46, 0.76);
  font-size: 0.98rem;
  font-weight: 760;
}

.sc-nav-link.active {
  color: var(--sc-accent);
}

.sc-nav-link.active::after {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: -1px;
  height: 3px;
  border-radius: 999px;
  background: rgba(30, 107, 100, 0.78);
}

.sc-main {
  max-width: var(--sc-max);
  margin: 0 auto;
  padding: 28px 22px 72px;
}

.sc-page-intro {
  margin-bottom: 36px;
}

.sc-return-link {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  border: 1px solid var(--sc-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--sc-accent);
  font-weight: 800;
}

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

h1,
h2 {
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  font-family: "Newsreader", Georgia, "Times New Roman", serif;
  font-weight: 600;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.02;
}

h2 {
  font-size: 2rem;
  line-height: 1.05;
}

/* showcase nav: spacer + task picker */
.sc-nav-spacer { flex: 1; }
.sc-picker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 8px;
  color: var(--sc-muted);
  font-size: 0.88rem;
  font-weight: 700;
}
.sc-picker select {
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--sc-line-strong);
  border-radius: 999px;
  background: var(--sc-panel-strong)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23156760' stroke-width='3'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E")
    no-repeat right 12px center;
  padding: 8px 34px 8px 14px;
  color: var(--sc-ink);
  font: inherit;
  font-weight: 650;
  cursor: pointer;
  max-width: 280px;
}
.sc-picker select:hover { border-color: var(--sc-accent); }

.sc-kicker-line {
  margin-bottom: 8px;
  color: var(--sc-accent);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

.sc-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sc-chip {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--sc-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  padding: 0 12px;
  color: var(--sc-muted);
  font-size: 0.88rem;
  font-weight: 720;
}

.sc-section {
  margin-top: 22px;
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-radius-lg);
  background: var(--sc-panel);
  box-shadow: var(--sc-shadow);
  padding: 24px;
}

.sc-section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 18px;
}

.sc-switch-label {
  display: flex;
  gap: 10px;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.sc-switch-input {
  position: absolute;
  opacity: 0;
}

.sc-switch-track {
  width: 48px;
  height: 28px;
  border-radius: 999px;
  border: 1px solid var(--sc-line-strong);
  background: #d7d9d4;
  position: relative;
  flex: 0 0 auto;
}

.sc-switch-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.16);
  transition: transform 160ms ease;
}

.sc-switch-input:checked + .sc-switch-track {
  background: var(--sc-accent);
  border-color: var(--sc-accent);
}

.sc-switch-input:checked + .sc-switch-track::after {
  transform: translateX(20px);
}

.sc-switch-copy {
  display: grid;
  gap: 2px;
}

.sc-switch-title {
  font-weight: 800;
}

.sc-switch-subtitle {
  color: var(--sc-muted);
  font-size: 0.82rem;
}

.sc-chart-wrap {
  display: grid;
  gap: 12px;
}

.sc-chart {
  min-height: 380px;
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-radius-md);
  background: var(--sc-panel-strong);
  position: relative;
  overflow: hidden;
}

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

.sc-chart-tooltip {
  position: absolute;
  pointer-events: none;
  z-index: 2;
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-radius-sm);
  background: rgba(255, 255, 255, 0.96);
  padding: 8px 10px;
  color: var(--sc-ink);
  font-size: 0.82rem;
  box-shadow: 0 12px 28px rgba(31, 28, 21, 0.12);
}

.sc-chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--sc-muted);
  font-size: 0.9rem;
  font-weight: 700;
}

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

.sc-legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 999px;
}

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

.sc-legend-dot.future {
  background: var(--sc-future);
}

.sc-description {
  display: grid;
  gap: 22px;
}

.sc-description-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.sc-description-block,
.sc-gt-evidence-item,
.sc-doc-card,
.sc-distractor-group {
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-radius-md);
  background: var(--sc-panel-strong);
}

.sc-description-block {
  padding: 18px;
}

.sc-description-label,
.sc-doc-section-title,
.sc-doc-meta-label,
.sc-gt-evidence-id,
.sc-distractor-group-label {
  font-weight: 850;
}

.sc-description-label {
  margin-bottom: 8px;
  color: var(--sc-accent);
  font-size: 0.8rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.sc-description-block p {
  margin-bottom: 0;
  color: var(--sc-muted);
  line-height: 1.65;
}

.sc-doc-section-title {
  margin-bottom: 12px;
  font-size: 1.02rem;
}

.sc-gt-evidence-list {
  display: grid;
  gap: 10px;
}

.sc-gt-evidence-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 12px;
  padding: 14px;
}

.sc-gt-evidence-id {
  color: var(--sc-accent);
}

.sc-doc-space-note {
  margin: 0 0 18px;
  color: var(--sc-muted);
  line-height: 1.55;
}

.sc-doc-stack {
  display: grid;
  gap: 12px;
}

.sc-doc-card {
  padding: 16px;
}

.sc-doc-card-supporting {
  border-left: 4px solid var(--sc-accent);
}

.sc-doc-card-distractor {
  border-left: 4px solid var(--sc-distractor);
  background: linear-gradient(90deg, var(--sc-distractor-soft), var(--sc-panel-strong) 18%);
}

.sc-doc-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.sc-doc-meta-label {
  color: var(--sc-accent);
}

.sc-doc-card-distractor .sc-doc-meta-label,
.sc-distractor-group-label {
  color: var(--sc-distractor);
}

.sc-doc-content {
  color: #242826;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.88rem;
  line-height: 1.58;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.sc-distractor-wall {
  display: grid;
  gap: 16px;
}

.sc-distractor-group {
  padding: 16px;
  background: rgba(255, 255, 255, 0.58);
}

.sc-distractor-group-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 12px;
}

.sc-empty {
  border: 1px dashed var(--sc-line-strong);
  border-radius: var(--sc-radius-md);
  padding: 18px;
  color: var(--sc-muted);
}

@media (max-width: 760px) {
  .sc-tabs-wrap,
  .sc-main {
    padding-left: 14px;
    padding-right: 14px;
  }

  .sc-section {
    padding: 18px;
  }

  .sc-section-header,
  .sc-description-grid {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .sc-gt-evidence-item {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 2.8rem;
  }

  h2 {
    font-size: 1.72rem;
  }
}