@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  --brand-font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --brand-font-sans: var(--app-font-family-base);

  --brand-display-xl: clamp(3rem, 7vw, 5.5rem);
  --brand-display-lg: clamp(2.25rem, 5vw, 4rem);
  --brand-display-md: clamp(1.875rem, 3.5vw, 2.75rem);
  --brand-display-sm: clamp(1.5rem, 2.5vw, 2rem);

  --brand-measure: 40rem;
  --brand-page: 72rem;

  --brand-space-section: clamp(4rem, 9vw, 8rem);
}

html {
  scroll-padding-top: 6rem;
}

body.brand {
  font-family: var(--brand-font-sans);
  color: var(--app-color-on-surface);
  background: var(--app-color-background);
}

.brand-header {
  border-bottom: 1px solid var(--app-color-border);
  position: sticky;
  top: 0;
  background: var(--app-color-background);
  z-index: 10;
}

.brand-header__inner,
.brand-footer__inner {
  max-width: var(--brand-page);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-wordmark {
  font-family: var(--brand-font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 0.12em;
  color: var(--app-color-on-surface);
  text-decoration: none;
}

.brand-header__nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.brand-nav-link {
  font-size: var(--app-font-size-sm);
  font-weight: var(--app-font-weight-medium);
  color: var(--app-color-on-surface);
  text-decoration: none;
}

.brand-nav-link:hover {
  color: var(--app-color-on-surface-muted);
}

.brand-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.7rem 1.5rem;
  font-size: var(--app-font-size-sm);
  font-weight: var(--app-font-weight-medium);
  text-decoration: none;
  border: 1px solid var(--app-color-border-emphasis);
  transition: opacity 0.15s ease, background 0.15s ease;
}

.brand-pill--solid {
  background: var(--app-color-primary);
  color: var(--app-color-on-primary);
}

.brand-pill--solid:hover {
  background: var(--app-color-primary-hover);
}

.brand-pill--outline {
  background: transparent;
  color: var(--app-color-on-surface);
}

.brand-pill--outline:hover {
  background: var(--app-color-surface-sunken);
}

.brand-main {
  min-height: 60vh;
}

.brand-eyebrow {
  font-size: var(--app-font-size-xs);
  font-weight: var(--app-font-weight-semibold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--app-color-on-surface-muted);
  margin-bottom: 1rem;
}

.brand-section {
  max-width: var(--brand-page);
  margin: 0 auto;
  padding: var(--brand-space-section) 1.5rem;
}

.blog-index__header {
  max-width: var(--brand-measure);
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.blog-index__title {
  font-family: var(--brand-font-display);
  font-size: var(--brand-display-lg);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
}

.blog-index__intro {
  font-size: var(--app-font-size-lg);
  line-height: 1.7;
  color: var(--app-color-on-surface-muted);
  margin: 0;
}

.article-list {
  display: grid;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.article-card {
  border-top: 1px solid var(--app-color-border);
  padding: 2.5rem 0;
  display: grid;
  gap: 0.75rem;
}

.article-card:last-child {
  border-bottom: 1px solid var(--app-color-border);
}

.article-card__meta {
  font-size: var(--app-font-size-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--app-color-on-surface-muted);
}

.article-card__title {
  font-family: var(--brand-font-display);
  font-size: var(--brand-display-sm);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
}

.article-card__title a {
  color: var(--app-color-on-surface);
  text-decoration: none;
}

.article-card__title a:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.article-card__standfirst {
  font-size: var(--app-font-size-base);
  line-height: 1.7;
  color: var(--app-color-on-surface-muted);
  margin: 0;
  max-width: var(--brand-measure);
}

.article-header {
  max-width: 46rem;
  margin: 0 auto clamp(2.5rem, 5vw, 4rem);
  padding: clamp(3rem, 7vw, 6rem) 1.5rem 0;
}

.article-header__title {
  font-family: var(--brand-font-display);
  font-size: var(--brand-display-lg);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
}

.article-header__standfirst {
  font-size: var(--app-font-size-xl);
  line-height: 1.6;
  color: var(--app-color-on-surface-muted);
  margin: 0 0 2rem;
}

.article-header__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  font-size: var(--app-font-size-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--app-color-on-surface-muted);
  border-top: 1px solid var(--app-color-border);
  padding-top: 1.5rem;
}

.article-header__meta span + span::before {
  content: "·";
  margin-right: 0.75rem;
}

.prose {
  max-width: var(--brand-measure);
  margin: 0 auto;
  padding: 0 1.5rem clamp(4rem, 8vw, 7rem);
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--app-color-on-surface);
}

.prose > * + * {
  margin-top: 1.5rem;
}

.prose h2 {
  font-family: var(--brand-font-display);
  font-size: var(--brand-display-sm);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-top: 3.5rem;
  margin-bottom: 1rem;
}

.prose h3 {
  font-family: var(--brand-font-display);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.3;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.prose h4 {
  font-size: var(--app-font-size-base);
  font-weight: var(--app-font-weight-semibold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--app-color-on-surface-muted);
  margin-top: 2rem;
}

.prose a {
  color: var(--app-color-on-surface);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

.prose a:hover {
  color: var(--app-color-on-surface-muted);
}

.prose strong {
  font-weight: var(--app-font-weight-semibold);
}

.prose ul,
.prose ol {
  padding-left: 1.5rem;
}

.prose li + li {
  margin-top: 0.5rem;
}

.prose blockquote {
  border-left: 2px solid var(--app-color-border-emphasis);
  padding-left: 1.5rem;
  margin-left: 0;
  font-family: var(--brand-font-display);
  font-size: 1.5rem;
  line-height: 1.4;
  font-style: italic;
  color: var(--app-color-on-surface);
}

.prose blockquote p {
  margin: 0;
}

.prose code {
  font-size: 0.9em;
  background: var(--app-color-surface-sunken);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

.prose pre {
  background: var(--app-color-surface-sunken);
  padding: 1.25rem;
  border-radius: 8px;
  overflow-x: auto;
}

.prose pre code {
  background: none;
  padding: 0;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--app-font-size-sm);
  display: block;
  overflow-x: auto;
}

.prose th,
.prose td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--app-color-border);
}

.prose th {
  font-weight: var(--app-font-weight-semibold);
  border-bottom-color: var(--app-color-border-strong);
}

.prose hr {
  border: 0;
  border-top: 1px solid var(--app-color-border);
  margin: 3rem 0;
}

.prose img {
  max-width: 100%;
  height: auto;
}

.prose .footnotes {
  font-size: var(--app-font-size-sm);
  color: var(--app-color-on-surface-muted);
  border-top: 1px solid var(--app-color-border);
  margin-top: 3rem;
  padding-top: 1.5rem;
}

.brand-footer {
  border-top: 1px solid var(--app-color-border);
  margin-top: var(--brand-space-section);
}

.brand-footer__mark {
  font-family: var(--brand-font-display);
  font-weight: 700;
  letter-spacing: 0.12em;
  margin: 0;
}

.brand-footer__meta {
  font-size: var(--app-font-size-sm);
  color: var(--app-color-on-surface-muted);
  margin: 0;
}

.empty-state-note {
  max-width: var(--brand-measure);
  color: var(--app-color-on-surface-muted);
  font-size: var(--app-font-size-lg);
  line-height: 1.7;
}

.article-figures,
.article-methodology {
  max-width: var(--brand-measure);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.article-methodology {
  border-top: 1px solid var(--app-color-border);
  padding-top: 2rem;
  margin-top: 3rem;
}

.article-methodology .prose {
  padding-left: 0;
  padding-right: 0;
  padding-bottom: 0;
}

.chart {
  font-family: var(--brand-font-sans);
}

.chart__axis {
  stroke: var(--app-color-border-strong);
  stroke-width: 1;
}

.chart__bar {
  fill: var(--app-color-on-surface);
}

.chart__bar--muted {
  fill: var(--app-color-on-surface-subtle);
}

.chart__value {
  font-size: 20px;
  font-weight: var(--app-font-weight-semibold);
  fill: var(--app-color-on-surface);
}

.chart__label {
  font-size: 13px;
  fill: var(--app-color-on-surface-muted);
}

.figure {
  margin: 3rem 0 1rem;
}

.figure__chart svg,
.figure__image {
  display: block;
  width: 100%;
  height: auto;
}

.figure__caption {
  border-top: 1px solid var(--app-color-border);
  padding-top: 0.75rem;
  margin-top: 0.75rem;
}

.figure__title {
  font-size: var(--app-font-size-sm);
  font-weight: var(--app-font-weight-semibold);
  margin: 0 0 0.35rem;
}

.figure__text {
  font-size: var(--app-font-size-sm);
  line-height: 1.6;
  color: var(--app-color-on-surface-muted);
  margin: 0 0 0.35rem;
}

.figure__source {
  font-size: var(--app-font-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--app-color-on-surface-muted);
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.figure__link {
  color: var(--app-color-on-surface);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.figure-embed {
  margin-bottom: 3rem;
  font-size: var(--app-font-size-sm);
}

.figure-embed__summary {
  cursor: pointer;
  font-weight: var(--app-font-weight-medium);
  color: var(--app-color-on-surface-muted);
}

.figure-embed__hint {
  color: var(--app-color-on-surface-muted);
  margin: 0.75rem 0;
  line-height: 1.6;
}

.figure-embed__code {
  width: 100%;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  line-height: 1.5;
  padding: 0.75rem;
  border: 1px solid var(--app-color-border);
  border-radius: 8px;
  background: var(--app-color-surface-sunken);
  color: var(--app-color-on-surface);
  resize: vertical;
  margin-bottom: 0.75rem;
}

.embed-body {
  margin: 0;
  padding: 1rem;
}

.embed-body .figure {
  margin: 0;
}

@media (max-width: 640px) {
  .brand-header__inner,
  .brand-footer__inner {
    padding: 1rem;
  }

  .brand-header__nav {
    gap: 0.75rem;
  }

  .brand-nav-link {
    display: none;
  }
}