:root {
  --bg: #f7f7f5;
  --panel: #ffffff;
  --ink: #171717;
  --muted: #6a6a66;
  --line: #deded8;
  --soft: #eeeeea;
  --accent: #0b6b57;
  --accent-2: #b44832;
  --blue: #2b5f8f;
  --shadow: 0 18px 50px rgba(20, 20, 20, .07);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  letter-spacing: 0;
}

button, input, select { font: inherit; }
button { cursor: pointer; }

.shell {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  min-height: 100vh;
}

.rail {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 28px 22px;
  border-right: 1px solid var(--line);
  background: rgba(247, 247, 245, .86);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 38px;
}

.mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--ink);
  color: white;
  font-weight: 700;
}

.brand strong, .brand small { display: block; }
.brand small { color: var(--muted); margin-top: 2px; }

.menu {
  display: grid;
  gap: 6px;
}

.menu button {
  appearance: none;
  border: 0;
  text-align: left;
  color: var(--muted);
  padding: 10px 12px;
  border-radius: 8px;
  background: transparent;
}

.menu button:hover, .menu button.active {
  color: var(--ink);
  background: var(--soft);
}

.rail-note {
  margin-top: 34px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, .6);
}

.rail-note span {
  display: block;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
}

.rail-note p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.workspace {
  min-width: 0;
  width: min(1280px, 100%);
  margin: 0 auto;
  padding: 42px 42px 72px;
}

.page { display: none; }
.page.active { display: block; }

.hero {
  min-height: 64vh;
  display: grid;
  align-content: end;
  gap: 36px;
  padding: 42px 0;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
}

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

h1 {
  max-width: 920px;
  margin-bottom: 20px;
  font-size: clamp(44px, 7vw, 92px);
  line-height: .96;
  font-weight: 640;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.lede {
  max-width: 760px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.55;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: 12px;
}

.hero-metrics article, .mini, .sample-result, .quality-card, .action-card, .region-card, .extreme-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-metrics article {
  padding: 18px;
}

.hero-metrics span, .sample-result span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.hero-metrics strong {
  display: block;
  margin-top: 8px;
  font-size: 32px;
  letter-spacing: 0;
}

.panel {
  padding: 44px 0;
  border-bottom: 1px solid var(--line);
}

.panel.first { padding-top: 42px; }

.panel h2 {
  margin-bottom: 0;
  font-size: 30px;
  letter-spacing: 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

.toolbar {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 12px;
}

.toolbar label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

.grid {
  display: grid;
  gap: 18px;
}

.grid > *, .sample-layout > *, .scenario-grid > *, .quality-grid > *, .region-grid > *, .extreme-grid > *, .action-board > *, .saved-scenarios > *, .presentation-metrics > *, .explain-metrics > * {
  min-width: 0;
}

.two { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.compact { margin-top: 22px; }

.table-wrap {
  min-width: 0;
  width: 100%;
  max-width: 100%;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th, td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: right;
  white-space: nowrap;
}

th:first-child, td:first-child { text-align: left; }
th { color: var(--muted); font-weight: 650; background: #fbfbfa; }
tr:last-child td { border-bottom: 0; }

.data-table-wrap {
  margin-top: 18px;
  max-height: 66vh;
}

.cell-input {
  min-width: 86px;
  width: 100%;
  min-height: 34px;
  padding: 6px 8px;
  text-align: right;
  border-color: transparent;
  background: #f8f8f6;
}

.cell-input:focus {
  outline: 2px solid rgba(11, 107, 87, .24);
  border-color: var(--accent);
  background: white;
}

.ghost {
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--ink);
}

.ghost:hover { background: var(--soft); }

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

.status-line {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(11, 107, 87, .1);
  color: var(--accent);
  font-size: 13px;
  font-weight: 650;
}

.chart-block, .mini {
  padding: 18px;
}

canvas {
  width: 100%;
  height: auto;
  border-radius: 8px;
  background: var(--panel);
}

.note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
}

select, input {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--ink);
  padding: 8px 10px;
}

.select-label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

.pill {
  padding: 9px 12px;
  border-radius: 999px;
  color: var(--accent);
  background: rgba(11, 107, 87, .1);
  font-size: 13px;
  font-weight: 700;
}

.metric-line {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.metric-line:last-child { border-bottom: 0; }
.metric-line span { color: var(--muted); }
.metric-line strong { text-align: right; }

.tight { margin-top: 16px; max-height: 420px; }

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.quality-grid, .region-grid, .extreme-grid, .action-board, .saved-scenarios, .presentation-metrics, .explain-metrics {
  display: grid;
  gap: 14px;
}

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

.region-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 18px 0;
}

.extreme-grid, .action-board {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.saved-scenarios {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 18px;
}

.presentation-metrics, .explain-metrics {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sim-layout {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 18px;
  margin-bottom: 18px;
}

.scenario {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.scenario strong, .quality-card strong, .region-card strong, .extreme-card strong, .action-card strong, .saved-card strong, .presentation-metrics strong, .explain-metrics strong {
  display: block;
  margin-top: 10px;
  font-size: 34px;
}

.quality-card, .region-card, .extreme-card, .action-card, .saved-card, .presentation-card, .explain-panel, .presentation-metrics article, .explain-metrics article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.quality-card span, .region-card span, .extreme-card span, .action-card span, .target-block span, .saved-card span, .presentation-card span, .presentation-metrics span, .explain-metrics span, .executive-answer span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.quality-card p, .region-card p, .extreme-card p, .action-card p, .plain-copy p, .saved-card p, .presentation-card p, .explain-panel p, .executive-answer p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

.presentation-panel {
  min-height: calc(100vh - 84px);
  display: grid;
  align-content: center;
}

.presentation-card {
  padding: 34px;
}

.presentation-card h3 {
  max-width: 900px;
  margin: 18px 0;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1;
}

.presentation-card > p {
  max-width: 820px;
  font-size: 20px;
}

.presentation-metrics {
  margin-top: 26px;
}

.presentation-metrics article, .explain-metrics article {
  background: #fbfbfa;
}

.explain-panel {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 18px;
  margin: 18px 0;
}

.action-row {
  cursor: pointer;
}

.action-row:hover td {
  background: #fbfbfa;
}

.compact-head {
  margin-top: 24px;
}

#scenarioName {
  width: min(260px, 100%);
}

.saved-card > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.text-button {
  border: 0;
  background: transparent;
  color: var(--accent-2);
  font-size: 13px;
}

.target-block {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.target-block strong {
  display: block;
  margin-top: 4px;
  font-size: 38px;
}

.target-track, .mini-track {
  overflow: hidden;
  width: 100%;
  height: 12px;
  margin-top: 14px;
  border-radius: 999px;
  background: var(--soft);
}

.target-track span, .mini-track i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
}

.mini-track {
  height: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  padding: 4px 8px;
  border-radius: 999px;
  color: white;
  font-size: 12px;
  font-weight: 700;
}

.badge.p1, .action-card.p1 span { background: var(--accent-2); }
.badge.p2, .action-card.p2 span { background: var(--blue); }
.badge.p3, .action-card.p3 span { background: var(--accent); }

.action-card span {
  display: inline-flex;
  width: fit-content;
  padding: 5px 9px;
  border-radius: 999px;
  color: white;
  font-weight: 700;
}

.sample-layout {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 18px;
}

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

.controls.wide {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-content: start;
}

.controls label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.sample-result {
  display: grid;
  align-content: center;
  min-height: 190px;
  padding: 24px;
}

.sample-result strong {
  margin-top: 6px;
  font-size: 64px;
  line-height: 1;
}

.sample-result p {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.insight h2 { margin-bottom: 18px; }
.insight ul, .answers { margin: 0; }
.insight li { margin-bottom: 10px; line-height: 1.45; }

.story-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.story {
  min-height: 170px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.story span {
  display: block;
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
}

.story p, .timeline p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.6;
}

.timeline {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.timeline article {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.timeline strong {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--ink);
  color: white;
}

.timeline h3 { margin-bottom: 6px; }
.spacious { margin-top: 20px; }

.answers {
  display: grid;
  gap: 12px;
}

.answer {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.answer h3 { margin-bottom: 8px; font-size: 16px; }
.answer p { margin-bottom: 0; color: var(--muted); line-height: 1.55; }

.executive-answer {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
}

.executive-answer h3 {
  grid-column: 1 / -1;
  margin-bottom: 2px;
}

@media (max-width: 960px) {
  .shell { grid-template-columns: 1fr; }
  .rail {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .menu { grid-template-columns: repeat(3, 1fr); }
  .menu button { text-align: center; }
  .rail-note { display: none; }
  .workspace { padding: 24px 18px 56px; }
  .hero-metrics, .two, .scenario-grid, .sample-layout, .sim-layout, .story-grid, .quality-grid, .region-grid, .extreme-grid, .action-board, .saved-scenarios, .presentation-metrics, .explain-panel, .explain-metrics, .executive-answer { grid-template-columns: 1fr; }
  .section-head { align-items: stretch; flex-direction: column; }
  .controls, .controls.wide, .toolbar { grid-template-columns: 1fr; }
  .actions { justify-content: stretch; }
  .actions .ghost { width: 100%; }
}

@media (max-width: 560px) {
  .menu { grid-template-columns: repeat(2, 1fr); }
  h1 { font-size: 42px; }
  .hero { min-height: auto; }
  th, td { padding: 9px; }
}