:root {
  --research-bg: #f4f1ea;
  --research-surface: #fbfaf7;
  --research-surface-strong: #ebe7de;
  --research-text: #1b1e1b;
  --research-muted: #626860;
  --research-border: #c9c4ba;
  --research-green: #11865d;
  --research-green-dark: #0a6646;
  --research-warning: #a56f31;
  --research-space-1: 4px;
  --research-space-2: 8px;
  --research-space-3: 12px;
  --research-space-4: 16px;
  --research-space-5: 24px;
  --research-space-6: 32px;
  --research-space-7: 48px;
  --research-space-8: 64px;
  --research-radius: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--research-bg);
}

.baseholder,
.baseholder > .container {
  background-color: var(--research-bg) !important;
}

.research-skip {
  position: fixed;
  top: var(--research-space-4);
  left: var(--research-space-4);
  z-index: 10000;
  padding: var(--research-space-3) var(--research-space-4);
  color: #ffffff;
  background: var(--research-green);
  border-radius: var(--research-radius);
  font-weight: 700;
  transform: translateY(-160%);
}

.research-skip:focus {
  color: #ffffff;
  transform: translateY(0);
}

.research-article {
  max-width: 1040px;
  margin: 0 auto;
  padding: var(--research-space-6) var(--research-space-4) var(--research-space-8);
  color: var(--research-text);
  font-family: "Poppins", sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

.research-article *,
.research-article *::before,
.research-article *::after {
  box-sizing: border-box;
}

.research-article a {
  color: #0b704c;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.research-article a:hover {
  color: #064e35;
}

.research-article a:focus-visible,
.research-article summary:focus-visible,
.research-table-wrap:focus-visible {
  outline: 3px solid var(--research-green);
  outline-offset: 3px;
}

.research-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--research-space-2);
  align-items: center;
  margin-bottom: var(--research-space-6);
  color: var(--research-muted);
  font-size: 14px;
}

.research-breadcrumbs a {
  color: var(--research-muted);
}

.research-header {
  max-width: 880px;
  padding: var(--research-space-5) 0 var(--research-space-8);
}

.research-header h1 {
  max-width: 820px;
  margin: 0 0 var(--research-space-5);
  color: var(--research-text);
  font-size: clamp(2.6rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.03;
}

.research-deck {
  max-width: 760px;
  margin: 0 0 var(--research-space-5);
  color: var(--research-muted);
  font-size: clamp(1.15rem, 2.2vw, 1.35rem);
  line-height: 1.45;
}

.research-answer {
  max-width: 820px;
  margin: 0 0 var(--research-space-5);
  font-size: 1.05rem;
}

.research-answer strong {
  color: var(--research-text);
}

.research-answer-note {
  color: var(--research-muted);
}

.research-byline {
  display: flex;
  flex-wrap: wrap;
  gap: var(--research-space-2) var(--research-space-5);
  margin: 0;
  color: var(--research-muted);
  font-size: 14px;
}

.research-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: var(--research-space-7) 0 0;
  padding: var(--research-space-5) 0;
  border-top: 1px solid var(--research-border);
  border-bottom: 1px solid var(--research-border);
}

.research-facts div {
  padding: 0 var(--research-space-5);
  border-right: 1px solid var(--research-border);
}

.research-facts div:first-child {
  padding-left: 0;
}

.research-facts div:last-child {
  padding-right: 0;
  border-right: 0;
}

.research-facts dt {
  margin-bottom: var(--research-space-1);
  color: var(--research-muted);
  font-size: 13px;
}

.research-facts dd {
  margin: 0;
  color: var(--research-text);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
}

.method-box,
.research-toc,
.research-conclusion {
  margin: 0 0 var(--research-space-8);
  padding: var(--research-space-5) 0;
  background: transparent;
  border-top: 1px solid var(--research-border);
  border-bottom: 1px solid var(--research-border);
  border-radius: 0;
}

.research-toc h2,
.research-conclusion h2 {
  margin-top: 0;
}

.research-toc ol,
.research-section ul,
.research-review-list ol {
  margin: 0;
  padding-left: 1.3rem;
}

.research-toc li + li,
.research-section li + li {
  margin-top: var(--research-space-2);
}

.research-toc ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: var(--research-space-7);
  row-gap: var(--research-space-2);
  list-style-position: inside;
}

.research-toc li {
  break-inside: avoid;
  margin-bottom: var(--research-space-2);
}

.research-section {
  max-width: 840px;
  margin: 0 auto;
  padding: var(--research-space-8) 0;
  border-top: 1px solid var(--research-border);
  scroll-margin-top: 96px;
}

.research-section h2,
.research-conclusion h2 {
  margin: 0 0 var(--research-space-5);
  color: var(--research-text);
  font-size: clamp(1.65rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.research-section h3 {
  margin: var(--research-space-7) 0 var(--research-space-3);
  color: var(--research-text);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
}

.research-section p,
.research-conclusion p {
  max-width: 76ch;
  margin: 0 0 var(--research-space-5);
}

.research-figure {
  width: calc(100% + 96px);
  margin: var(--research-space-7) 0 var(--research-space-8) -48px;
}

.research-figure img {
  display: block;
  width: 100%;
  height: auto;
  background: transparent;
  border: 0;
  border-radius: 0;
}

.research-figure figcaption {
  margin-top: var(--research-space-3);
  color: var(--research-muted);
  font-size: 14px;
  line-height: 1.55;
}

.research-figure figcaption strong {
  color: var(--research-text);
}

.research-table-wrap {
  width: calc(100% + 96px);
  margin: var(--research-space-7) 0 var(--research-space-8) -48px;
  overflow-x: auto;
  border: 1px solid var(--research-border);
  border-radius: 0;
}

.research-table-wrap table {
  width: 100%;
  min-width: 720px;
  margin: 0;
  border-collapse: collapse;
  color: var(--research-text);
  background: var(--research-surface);
  font-size: 14px;
}

.research-table-wrap caption {
  padding: var(--research-space-4) var(--research-space-5);
  color: var(--research-text);
  background: var(--research-surface-strong);
  border-bottom: 1px solid var(--research-border);
  caption-side: top;
  font-weight: 700;
  text-align: left;
}

.research-table-wrap th,
.research-table-wrap td {
  padding: var(--research-space-3) var(--research-space-4);
  border-bottom: 1px solid var(--research-border);
  text-align: left;
  vertical-align: top;
}

.research-table-wrap thead th {
  color: var(--research-muted);
  background: var(--research-surface-strong);
  font-size: 13px;
  font-weight: 600;
}

.research-table-wrap tbody tr:last-child th,
.research-table-wrap tbody tr:last-child td {
  border-bottom: 0;
}

.method-box {
  margin: var(--research-space-7) 0;
  padding: var(--research-space-5);
  background: var(--research-surface);
  border: 1px solid var(--research-border);
}

.method-box h3 {
  margin: 0 0 var(--research-space-5);
}

.method-box dl,
.research-definitions {
  margin: 0;
}

.method-box dl div,
.research-definitions div {
  display: grid;
  grid-template-columns: minmax(180px, 0.4fr) 1fr;
  gap: var(--research-space-4);
  padding: var(--research-space-3) 0;
  border-top: 1px solid var(--research-border);
}

.method-box dt,
.research-definitions dt {
  color: var(--research-text);
  font-weight: 700;
}

.method-box dd,
.research-definitions dd {
  margin: 0;
  color: var(--research-muted);
}

.research-formula {
  display: grid;
  gap: var(--research-space-3);
  margin: var(--research-space-5) 0;
  padding: var(--research-space-5);
  color: var(--research-text);
  background: var(--research-surface);
  border: 1px solid var(--research-border);
  border-left: 3px solid var(--research-warning);
  border-radius: 0;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 15px;
}

.research-downloads {
  display: flex;
  flex-wrap: wrap;
  gap: var(--research-space-3) var(--research-space-5);
  margin: var(--research-space-5) 0 var(--research-space-7);
}

.research-downloads a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.research-source-note {
  margin-top: var(--research-space-6) !important;
  padding-top: var(--research-space-5);
  color: var(--research-muted);
  border-top: 1px solid var(--research-border);
  font-size: 14px;
}

.research-faq {
  border-top: 1px solid var(--research-border);
}

.research-faq details {
  border-bottom: 1px solid var(--research-border);
}

.research-faq summary {
  min-height: 56px;
  padding: var(--research-space-4) var(--research-space-6) var(--research-space-4) 0;
  color: var(--research-text);
  cursor: pointer;
  font-weight: 700;
}

.research-faq details p {
  margin: 0;
  padding: 0 0 var(--research-space-5);
  color: var(--research-muted);
}

.research-conclusion {
  max-width: 840px;
  margin: var(--research-space-8) auto 0;
  padding: var(--research-space-7) 0;
  border-top: 3px solid var(--research-green);
  border-bottom: 0;
}

.research-primary-action {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  margin-top: var(--research-space-3);
  padding: var(--research-space-3) var(--research-space-5);
  color: #ffffff !important;
  background: var(--research-green);
  border: 1px solid var(--research-green);
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none !important;
  transition: background-color 150ms ease, border-color 150ms ease;
}

.research-primary-action:hover {
  color: #ffffff !important;
  background: var(--research-green-dark);
  border-color: var(--research-green-dark);
}

@media (max-width: 767px) {
  .research-article {
    padding: var(--research-space-5) var(--research-space-4) var(--research-space-7);
    font-size: 16px;
  }

  .research-header {
    padding-top: var(--research-space-4);
  }

  .research-header h1 {
    font-size: clamp(2.25rem, 10.5vw, 2.9rem);
  }

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

  .research-facts div {
    padding: var(--research-space-4) 0;
    border-right: 0;
    border-bottom: 1px solid var(--research-border);
  }

  .research-facts div:nth-child(odd) {
    padding-right: var(--research-space-4);
    border-right: 1px solid var(--research-border);
  }

  .research-facts div:nth-child(even) {
    padding-left: var(--research-space-4);
  }

  .research-facts div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .method-box,
  .research-toc,
  .research-conclusion {
    padding: var(--research-space-5) 0;
  }

  .research-toc ol {
    grid-template-columns: 1fr;
  }

  .research-section {
    padding: var(--research-space-7) 0;
  }

  .method-box dl div,
  .research-definitions div {
    grid-template-columns: 1fr;
    gap: var(--research-space-1);
  }

  .research-figure {
    width: calc(100% + 32px);
    margin: var(--research-space-6) 0 var(--research-space-7) -16px;
  }

  .research-figure figcaption {
    padding: 0 var(--research-space-4);
  }

  .research-table-wrap {
    width: calc(100% + 32px);
    margin: var(--research-space-6) 0 var(--research-space-7) -16px;
  }

  .method-box {
    padding: var(--research-space-5) var(--research-space-4);
  }
}

@media (min-width: 768px) and (max-width: 1024px) {
  .research-figure,
  .research-table-wrap {
    width: 100%;
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .research-primary-action {
    transition: none;
  }
}