:root {
  color-scheme: light;
  --bg: #fafafa;
  --grid: rgba(15, 23, 42, 0.045);
  --ink: #182230;
  --muted: #667085;
  --soft: #f3f5f7;
  --panel: rgba(255, 255, 255, 0.94);
  --line: #e4e7ec;
  --line-strong: #d0d5dd;
  --accent: #ff5a1f;
  --accent-dark: #c2410c;
  --accent-soft: #fff4ed;
  --green: #0f766e;
  --green-soft: #e6faf4;
  --blue-soft: #eef4ff;
  --red-soft: #fff1f3;
  --shadow: 0 20px 60px rgba(16, 24, 40, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    var(--bg);
  background-size: 28px 28px;
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  letter-spacing: 0;
}

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

button {
  border: 0;
  cursor: pointer;
}

a {
  color: inherit;
}

.app-shell {
  width: min(1180px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 28px 0 86px;
}

.app-header {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 30px;
}

.screen-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.screen-tab {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--muted);
  padding: 0 16px;
  font-weight: 760;
}

.screen-tab.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

.page-shell {
  width: 100%;
  margin: 0 auto;
  padding: 0;
}

.hero {
  padding: 18px 0 34px;
}

.screen-intro {
  margin-bottom: 22px;
}

.screen-intro h2 {
  max-width: 760px;
  margin-bottom: 8px;
}

.brief-layout,
.run-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 18px;
  align-items: start;
}

.question-card,
.brief-summary,
.run-card,
.run-output {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.question-card {
  min-height: 560px;
  padding: 28px;
}

.question-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
  color: #98a2b3;
  font-size: 13px;
  font-weight: 780;
}

.step-dots {
  display: flex;
  gap: 7px;
}

.step-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--line-strong);
}

.step-dot.active {
  background: var(--accent);
}

.question-title {
  max-width: 760px;
  margin-bottom: 10px;
  font-size: clamp(28px, 3vw, 36px);
  line-height: 1.08;
}

.question-help {
  max-width: 760px;
  margin-bottom: 22px;
}

.big-input,
.chip-input {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  font-size: 17px;
}

.big-input {
  min-height: 170px;
  resize: vertical;
  padding: 16px;
  line-height: 1.55;
}

.chip-input {
  min-height: 48px;
  padding: 0 14px;
}

.chip-row,
.suggestion-row,
.question-actions,
.run-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip-row {
  margin-bottom: 12px;
}

.suggestion-row {
  margin-top: 14px;
}

.question-actions,
.run-actions {
  gap: 10px;
  margin-top: 26px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 32px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--soft);
  color: var(--ink);
  padding: 0 10px;
  font-size: 13px;
  font-weight: 700;
}

.chip button {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: #e9edf2;
  color: var(--muted);
  line-height: 1;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  padding: 0 15px;
  text-decoration: none;
}

.primary-button {
  background: var(--accent);
  color: #fff;
  font-weight: 760;
}

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

.secondary-button {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink);
  font-weight: 700;
}

.secondary-button:hover {
  border-color: #fed7aa;
  color: var(--accent-dark);
}

.primary-button:disabled,
.secondary-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.brief-summary,
.run-output {
  padding: 20px;
}

.brief-summary h3 {
  margin-bottom: 18px;
}

.brief-summary dl {
  display: grid;
  gap: 16px;
  margin: 0;
}

.brief-summary dt {
  margin-bottom: 5px;
  color: #98a2b3;
  font-size: 11px;
  font-weight: 820;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.brief-summary dd {
  margin: 0;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.45;
}

.summary-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.summary-pill {
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 760;
}

.run-card {
  padding: 28px;
}

.run-card h2 {
  margin-bottom: 8px;
}

.run-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.run-metrics div {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--soft);
  padding: 12px;
}

.run-metrics strong {
  display: block;
  color: var(--green);
  font-size: 24px;
  line-height: 1;
}

.run-metrics span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
}

.timeline {
  display: grid;
  gap: 0;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 18px;
}

.timeline li::before {
  position: absolute;
  left: 10px;
  top: 24px;
  bottom: 0;
  width: 2px;
  background: var(--line);
  content: "";
}

.timeline li:last-child::before {
  display: none;
}

.timeline-marker {
  position: relative;
  z-index: 1;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: var(--green);
}

.timeline strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
}

.timeline span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.run-output ul {
  display: grid;
  gap: 9px;
  margin: 14px 0 18px;
  padding-left: 20px;
}

.run-output li {
  color: var(--ink);
  font-size: 14px;
  line-height: 1.4;
}

.rejection-card {
  margin: 16px 0;
  border: 1px solid #fed7aa;
  border-radius: 12px;
  background: var(--accent-soft);
  padding: 12px;
}

.rejection-card span {
  display: block;
  margin-bottom: 4px;
  color: var(--accent-dark);
  font-size: 11px;
  font-weight: 820;
  text-transform: uppercase;
}

.rejection-card p {
  color: var(--ink);
  font-size: 13px;
}

.text-link {
  display: block;
  margin-top: 10px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 760;
  text-decoration: none;
}

.text-link:hover {
  text-decoration: underline;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

h1 {
  max-width: 900px;
  font-size: clamp(38px, 5vw, 68px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  font-size: 20px;
  line-height: 1.18;
}

h4 {
  font-size: 15px;
  line-height: 1.25;
}

p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.5;
}

.hero-copy {
  max-width: 760px;
  margin-top: 16px;
  font-size: 18px;
}

.thesis-card,
.section-block,
.problem-card,
.competitor-card,
.customer-card,
.source-card,
.matrix-card,
.recommendation-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: 0 10px 28px rgba(16, 24, 40, 0.045);
}

.source-size,
.mini-label {
  color: #98a2b3;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.memo-nav {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 1px solid var(--line);
  background: rgba(250, 250, 250, 0.9);
  padding: 12px 0;
  backdrop-filter: blur(16px);
}

.memo-nav a,
.section-actions button,
.pill,
.quote-pill,
.tag {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
}

.memo-nav a {
  min-height: 38px;
  padding: 0 16px;
  font-weight: 760;
}

.memo-nav a:hover,
.section-actions button:hover {
  border-color: #fed7aa;
  color: var(--accent-dark);
}

.memo-nav a.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.memo-nav a.covered:not(.active) {
  border-color: #bbf7d0;
  background: #f0fdf4;
  color: var(--green);
}

.thesis-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
  margin-top: 38px;
  padding: 26px;
}

.thesis-card h2 {
  max-width: 780px;
}

.thesis-card p:not(.eyebrow) {
  max-width: 820px;
  margin-top: 12px;
  font-size: 17px;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(104px, 1fr));
  gap: 10px;
}

.metric {
  min-width: 120px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--soft);
  padding: 12px;
}

.metric strong {
  display: block;
  color: var(--green);
  font-size: 28px;
  line-height: 1;
}

.metric span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 780;
}

.section-block {
  margin-top: 28px;
  padding: 24px;
}

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

.section-heading p:not(.eyebrow) {
  max-width: 760px;
  margin-top: 8px;
}

.section-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 8px;
}

.section-actions button {
  min-height: 34px;
  padding: 0 12px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 760;
}

.problem-list,
.competitor-list,
.customer-groups,
.source-grid {
  display: grid;
  gap: 12px;
}

details {
  overflow: hidden;
}

summary {
  cursor: pointer;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

.problem-card summary,
.competitor-card summary,
.source-card summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 18px;
}

.summary-main {
  display: grid;
  gap: 10px;
}

.summary-side {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

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

.pill,
.tag {
  min-height: 28px;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 760;
}

.pill.strong {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.pill.good {
  background: var(--green-soft);
  color: var(--green);
}

.expand-cue {
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 820;
}

.quote-preview,
.quote-text {
  display: block;
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  background: #f8fafc;
  color: var(--ink);
  font-style: italic;
  font-weight: 690;
  line-height: 1.45;
  text-decoration: none;
}

.quote-preview {
  max-width: 820px;
  padding: 10px 12px;
  font-size: 14px;
}

.quote-text {
  padding: 12px;
  font-size: 15px;
}

.quote-preview:hover,
.quote-text:hover {
  color: var(--accent-dark);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, 92px);
  gap: 8px;
}

.score-tile,
.expand-tile {
  display: grid;
  align-content: center;
  min-height: 70px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--soft);
  padding: 10px;
}

.score-tile.primary {
  border-color: #b7f0dd;
  background: var(--green-soft);
  color: var(--green);
}

.score-tile strong {
  display: block;
  color: var(--ink);
  font-size: 21px;
  line-height: 1;
}

.score-tile.primary strong {
  color: var(--green);
  font-size: 26px;
}

.score-tile span,
.expand-tile span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.expand-tile {
  grid-column: 1 / -1;
  min-height: 38px;
  border-color: #fed7aa;
  background: var(--accent-soft);
}

.expand-tile span {
  margin-top: 0;
  color: var(--accent-dark);
}

.detail-body {
  display: grid;
  gap: 18px;
  border-top: 1px solid var(--line);
  padding: 18px;
}

.answer-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.answer-card,
.quote-card,
.matrix-row,
.recommendation-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 13px;
}

.answer-card span {
  display: block;
  margin-bottom: 7px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 850;
}

.answer-card p {
  font-size: 13px;
}

.subsection-title {
  margin-bottom: 10px;
  font-size: 13px;
  font-weight: 880;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.quote-list,
.solution-list {
  display: grid;
  gap: 10px;
}

.solution-row {
  display: grid;
  grid-template-columns: minmax(220px, 0.74fr) minmax(0, 1.26fr);
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  padding: 14px;
}

.solution-read {
  align-self: start;
}

.solution-read h5 {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.25;
}

.solution-read p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.solution-sources {
  display: grid;
  gap: 8px;
}

.solution-source {
  display: grid;
  gap: 8px;
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  background: #f8fafc;
  padding: 10px 11px;
}

.solution-source-quote {
  color: var(--ink);
  font-size: 13px;
  font-style: italic;
  font-weight: 720;
  line-height: 1.45;
  text-decoration: none;
}

.solution-source-quote:hover {
  color: var(--accent-dark);
}

.quote-card {
  display: grid;
  gap: 10px;
}

.quote-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.quote-pill {
  min-height: 26px;
  padding: 0 9px;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 780;
}

.quote-pill.thread::before {
  content: "↗";
  margin-right: 5px;
}

.matrix-card {
  margin-bottom: 12px;
  padding: 16px;
}

.matrix-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.matrix-row {
  display: grid;
  grid-template-columns: 180px repeat(5, minmax(88px, 1fr));
  gap: 8px;
  align-items: center;
}

.matrix-row strong {
  font-size: 14px;
}

.cell {
  border-radius: 999px;
  padding: 6px 8px;
  text-align: center;
  font-size: 11px;
  font-weight: 830;
}

.cell.strong {
  background: var(--green-soft);
  color: var(--green);
}

.cell.medium {
  background: #fff7e6;
  color: #9a5b00;
}

.cell.weak {
  background: var(--soft);
  color: #475467;
}

.cell.none {
  background: var(--red-soft);
  color: #b42318;
}

.competitor-card h3,
.customer-card h3 {
  margin-bottom: 7px;
}

.cost-link {
  color: var(--accent-dark);
  font-weight: 780;
  text-decoration: none;
}

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

.sentiment-label {
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 850;
}

.sentiment-label.positive {
  color: var(--green);
}

.sentiment-label.negative {
  color: #b42318;
}

.recommendation-card {
  margin-top: 14px;
  padding: 18px;
}

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

.recommendation-item h4 {
  margin-bottom: 8px;
}

.customer-group-title {
  margin: 18px 0 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 850;
}

.customer-group-title:first-child {
  margin-top: 0;
}

.customer-list {
  display: grid;
  gap: 8px;
}

.customer-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
}

.customer-summary-main {
  display: grid;
  gap: 8px;
}

.customer-summary-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.customer-quote {
  max-width: 760px;
  padding: 8px 10px;
  font-size: 13px;
}

.customer-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.customer-context {
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding: 12px 14px 14px;
}

.customer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.small-button {
  min-height: 30px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  padding: 0 11px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 780;
}

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

.generated-dm {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  padding: 12px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 690;
}

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

.source-card .detail-body {
  gap: 8px;
}

@media (max-width: 980px) {
  .brief-layout,
  .run-layout,
  .hero,
  .thesis-card,
  .section-heading,
  .problem-card summary,
  .competitor-card summary,
  .customer-row,
  .source-card summary,
  .sentiment-columns,
  .source-grid {
    display: grid;
    grid-template-columns: 1fr;
  }

  .summary-side,
  .metric-grid,
  .section-actions {
    justify-content: flex-start;
  }

  .run-metrics,
  .solution-row,
  .answer-grid,
  .customer-detail-grid,
  .recommendation-grid {
    grid-template-columns: 1fr;
  }

  .matrix-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .app-shell {
    width: min(100vw - 24px, 1180px);
    padding-top: 22px;
  }

  .hero {
    padding-top: 10px;
  }

  h1 {
    font-size: 38px;
  }

  .section-block,
  .thesis-card,
  .question-card,
  .run-card,
  .brief-summary,
  .run-output {
    padding: 16px;
  }

  .screen-nav {
    justify-content: flex-start;
  }

  .answer-grid,
  .customer-detail-grid,
  .recommendation-grid,
  .metric-strip,
  .run-metrics {
    grid-template-columns: 1fr;
  }

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