:root {
  color-scheme: light;
  --bg: #f7f8f5;
  --surface: #ffffff;
  --surface-muted: #eef3ed;
  --ink: #18201d;
  --muted: #5d6861;
  --line: #dce3dd;
  --accent: #256d5a;
  --accent-strong: #164f42;
  --blue: #315f8d;
  --amber: #b76e2a;
  --danger: #a94343;
  --radius: 8px;
  --shadow: 0 18px 45px rgba(32, 45, 38, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
}

button,
textarea,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

button:focus-visible,
a:focus-visible,
textarea:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(37, 109, 90, 0.28);
  outline-offset: 2px;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  padding: 14px clamp(18px, 4vw, 48px);
  border-bottom: 1px solid rgba(220, 227, 221, 0.82);
  background: rgba(247, 248, 245, 0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 780;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  gap: 18px;
  justify-content: center;
  color: var(--muted);
  font-size: 14px;
}

.button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0 16px;
  font-weight: 700;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--accent);
  color: #fff;
}

.button-primary:hover {
  background: var(--accent-strong);
}

.button-secondary {
  background: var(--surface);
  border-color: var(--line);
  color: var(--ink);
}

.hero-section {
  min-height: calc(100vh - 64px);
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(420px, 1.14fr);
  gap: clamp(28px, 5vw, 76px);
  align-items: center;
  padding: clamp(52px, 8vw, 90px) clamp(18px, 5vw, 74px) 40px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(125deg, rgba(37, 109, 90, 0.12), transparent 34%),
    linear-gradient(0deg, rgba(49, 95, 141, 0.08), transparent 42%),
    var(--bg);
}

.hero-copy {
  max-width: 690px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 820;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 900px;
  margin-bottom: 20px;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.06;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.lede {
  max-width: 680px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.5;
}

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

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  width: min(420px, calc(100% - 36px));
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  padding: 12px 14px;
  background: #fff;
  box-shadow: var(--shadow);
  color: var(--accent-strong);
  font-weight: 760;
}

.hero-visual {
  min-height: 500px;
  display: flex;
  align-items: stretch;
}

.signal-map {
  width: 100%;
  display: grid;
  grid-template-rows: 1.1fr 0.9fr 0.95fr;
  gap: 12px;
}

.signal-column {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(220, 227, 221, 0.95);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: var(--shadow);
  padding: 22px;
}

.signal-column::after {
  content: "";
  position: absolute;
  inset: auto 22px 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--blue), var(--amber));
}

.signal-column p {
  color: var(--muted);
  line-height: 1.45;
}

.mini-label {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.score-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.score-row b {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--surface-muted);
  font-size: 12px;
}

.band,
.page-header,
.workspace-shell,
.sample-grid,
.workflow-strip,
.share-hero,
.share-layout,
.site-footer {
  width: min(100% - 36px, 1220px);
  margin: 0 auto;
}

.band {
  padding: 72px 0;
}

.section-heading {
  max-width: 740px;
  margin-bottom: 26px;
}

.section-heading p,
.page-header p,
.share-hero p {
  color: var(--muted);
  line-height: 1.6;
}

.feature-grid,
.sample-grid,
.workflow-strip,
.check-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature,
.sample-card,
.workflow-strip > div,
.panel,
.workspace-rail {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.feature,
.workflow-strip > div {
  padding: 20px;
}

.feature p,
.workflow-strip p,
.sample-card p,
.panel p,
.small-note {
  color: var(--muted);
  line-height: 1.55;
}

.workflow-strip {
  padding: 0 0 72px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.workflow-strip span {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  margin-bottom: 14px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
}

.page-header,
.share-hero {
  padding: 56px 0 22px;
}

.page-header h1,
.share-hero h1 {
  font-size: clamp(34px, 5vw, 58px);
}

.sample-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding-bottom: 70px;
}

.sample-card {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
}

.workspace-shell {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 18px;
  padding: 28px 0 72px;
}

.workspace-rail {
  position: sticky;
  top: 86px;
  height: fit-content;
  padding: 22px;
}

.workspace-rail h1 {
  font-size: 30px;
  line-height: 1.05;
}

.workspace-main {
  display: grid;
  gap: 16px;
}

.panel {
  padding: 22px;
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.file-button input {
  display: none;
}

.evidence-input {
  width: 100%;
  min-height: 260px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: #fbfcfa;
  color: var(--ink);
  line-height: 1.5;
}

.evidence-panel {
  padding: 0;
  overflow: hidden;
}

.evidence-details > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  cursor: pointer;
  list-style: none;
}

.evidence-details > summary::-webkit-details-marker {
  display: none;
}

.evidence-details > summary strong {
  display: block;
  font-size: 22px;
}

.evidence-details > summary small,
.evidence-header p,
.field-label {
  color: var(--muted);
  line-height: 1.45;
}

.evidence-details[open] {
  padding-bottom: 22px;
}

.evidence-details[open] > :not(summary) {
  margin-left: 22px;
  margin-right: 22px;
}

.evidence-header {
  margin-bottom: 12px;
}

.field-label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 780;
}

.context-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.context-grid label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.product-context-grid {
  grid-template-columns: minmax(180px, 0.65fr) minmax(260px, 1.35fr);
}

.context-textarea {
  width: 100%;
  min-height: 84px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: #fbfcfa;
  color: var(--ink);
  line-height: 1.45;
}

.evidence-input:focus {
  outline: 3px solid rgba(37, 109, 90, 0.16);
  border-color: var(--accent);
}

select,
input[type="text"] {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  background: #fbfcfa;
  color: var(--ink);
}

textarea:disabled,
select:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.68;
}

.stat-list {
  display: grid;
  gap: 8px;
  margin: 18px 0;
}

.stat-list div,
.event-counts div,
.compact-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
}

.stat-list span,
.event-counts span,
.metric span {
  color: var(--muted);
  font-size: 13px;
}

.small-note {
  margin: 16px 0 0;
  font-size: 13px;
}

.metrics-panel {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  align-items: center;
}

.quality-score {
  display: inline-block;
  font-size: 64px;
  line-height: 0.9;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.metric {
  border-left: 3px solid var(--accent);
  padding: 8px 10px;
  background: var(--surface-muted);
  border-radius: 6px;
}

.metric b {
  display: block;
  margin-top: 4px;
}

.quality-panel {
  border-left: 4px solid var(--accent);
}

.quality-panel.needs_context {
  border-left-color: var(--amber);
}

.quality-panel.not_ready {
  border-left-color: var(--danger);
}

.readiness-pill {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 10px;
  background: var(--surface-muted);
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 820;
  text-transform: uppercase;
}

.guidance-list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.6;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.result-tabs {
  position: sticky;
  top: 76px;
  z-index: 10;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(247, 248, 245, 0.94);
  backdrop-filter: blur(12px);
}

.decision-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 20px;
  align-items: center;
  border-left: 4px solid var(--accent);
}

.decision-hero h2 {
  font-size: clamp(28px, 4vw, 44px);
}

.decision-stats {
  display: grid;
  gap: 10px;
}

.cluster-list,
.opportunity-list,
.assumption-list,
.persona-list {
  display: grid;
  gap: 12px;
}

.cluster-card,
.opportunity-card,
.persona-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: #fbfcfa;
}

.persona-card p {
  margin: 8px 0;
}

.persona-card small {
  color: var(--muted);
  line-height: 1.45;
}

.opportunity-card.selected {
  border-color: var(--accent);
  box-shadow: inset 4px 0 0 var(--accent);
}

.cluster-button,
.opportunity-button {
  width: 100%;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border: 0;
  background: transparent;
  padding: 0;
  color: var(--ink);
  text-align: left;
  font-weight: 800;
}

.cluster-button b,
.opportunity-button b {
  flex: 0 0 auto;
  color: var(--accent-strong);
}

.cluster-card small {
  display: block;
  color: var(--muted);
  line-height: 1.45;
}

.quote-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

blockquote {
  margin: 0;
  border-left: 3px solid var(--blue);
  padding: 10px 12px;
  background: #f3f7fa;
  color: #243342;
  line-height: 1.45;
}

cite {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
}

.detail-list {
  margin-top: 12px;
}

.score-controls,
.evidence-mini-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0;
}

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

.score-controls label {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #fff;
  color: var(--muted);
  font-size: 13px;
  font-weight: 760;
}

.score-controls b {
  color: var(--accent-strong);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.link-button {
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--accent-strong);
  font-weight: 820;
  text-decoration: underline;
}

.score-breakdown {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 10px 0 16px;
}

.score-breakdown span {
  display: grid;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: var(--surface-muted);
  color: var(--ink);
  font-weight: 800;
}

.score-breakdown b {
  color: var(--muted);
  font-size: 11px;
  font-weight: 820;
  text-transform: uppercase;
}

.detail-list ul,
.cutline ul {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.assumption-row {
  display: grid;
  grid-template-columns: 78px 1fr auto;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}

.assumption-row span,
.assumption-row b {
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.cutline {
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}

.artifact-panel {
  overflow: hidden;
}

.tracking-panel {
  overflow: hidden;
}

.tracking-table {
  display: grid;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.tracking-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.7fr) minmax(180px, 1.1fr) minmax(220px, 1.3fr);
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: #fbfcfa;
}

.tracking-row:last-child {
  border-bottom: 0;
}

.tracking-row span {
  min-width: 0;
  overflow-wrap: anywhere;
  line-height: 1.45;
}

.tracking-head {
  background: var(--surface-muted);
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 820;
  text-transform: uppercase;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.tabs button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  background: #fff;
  color: var(--muted);
  font-weight: 750;
}

.tabs button.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.artifact-output {
  min-height: 360px;
  max-height: 680px;
  overflow: auto;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: #101815;
  color: #eef7f2;
  font: 14px/1.55 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  white-space: pre-wrap;
}

.artifact-rich {
  display: grid;
  gap: 10px;
  max-height: 760px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  background: #fbfcfa;
}

.artifact-rich h3,
.artifact-rich h4,
.artifact-rich p,
.artifact-rich ul {
  margin: 0;
}

.artifact-rich h3 {
  font-size: 28px;
}

.artifact-rich h4 {
  margin-top: 10px;
  font-size: 18px;
}

.artifact-rich ul {
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.55;
}

.artifact-rich table {
  width: 100%;
  border-collapse: collapse;
  overflow-wrap: anywhere;
}

.artifact-rich td {
  border: 1px solid var(--line);
  padding: 8px;
  vertical-align: top;
}

.loading-state {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  color: var(--accent-strong);
}

.loading-state span {
  width: 18px;
  height: 18px;
  border: 3px solid rgba(37, 109, 90, 0.18);
  border-top-color: var(--accent);
  border-radius: 999px;
  animation: spin 800ms linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@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;
  }
}

.empty-state {
  min-height: 220px;
  display: grid;
  align-content: center;
}

.share-layout {
  margin-bottom: 16px;
}

.funnel-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.funnel-list span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 10px;
  background: var(--surface-muted);
  font-size: 12px;
  font-weight: 800;
}

.funnel-health {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 18px;
}

.funnel-step {
  display: grid;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfcfa;
  min-width: 0;
}

.funnel-step span,
.funnel-step small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.funnel-step strong {
  color: var(--accent-strong);
  font-size: 28px;
  line-height: 1;
}

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

.check-grid label {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfcfa;
}

.feedback-grid {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: end;
}

.feedback-grid label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--line);
  padding: 24px 0 34px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 980px) {
  .topbar {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .hero-section,
  .workspace-shell,
  .two-column,
  .metrics-panel,
  .decision-hero {
    grid-template-columns: 1fr;
  }

  .hero-section {
    min-height: auto;
  }

  .hero-visual {
    min-height: 360px;
  }

  .workspace-rail {
    position: static;
  }

  .feature-grid,
  .sample-grid,
  .workflow-strip,
  .metric-row,
  .context-grid,
  .funnel-health,
  .check-grid,
  .feedback-grid,
  .score-controls,
  .evidence-mini-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .topbar {
    padding: 12px 16px;
  }

  .topbar > .button {
    display: none;
  }

  .hero-section {
    padding: 42px 18px 28px;
  }

  h1 {
    font-size: 42px;
  }

  .lede {
    font-size: 17px;
  }

  .feature-grid,
  .sample-grid,
  .workflow-strip,
  .metric-row,
  .context-grid,
  .funnel-health,
  .check-grid,
  .feedback-grid,
  .score-controls,
  .evidence-mini-grid,
  .assumption-row {
    grid-template-columns: 1fr;
  }

  .result-tabs {
    position: static;
  }

  .tracking-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .score-breakdown {
    grid-template-columns: 1fr;
  }

  .panel-header,
  .site-footer {
    flex-direction: column;
  }

  .hero-actions,
  .rail-actions,
  .artifact-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}