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

:root {
  color-scheme: light;
  --paper: #fffdf9;
  --ink: #1f1c17;
  --muted: #5f5b55;
  --rule: #dad2c4;
  --accent: #7a1c1c;
  --panel: #f1ece4;
  --shadow: rgba(17, 14, 10, 0.12);
}

body {
  margin: 0;
  background: #f6f3ee;
  color: var(--ink);
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, "Times New Roman", serif;
  line-height: 1.7;
}

body.modal-open {
  overflow: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(122, 28, 28, 0.3);
}

a:hover {
  border-bottom-color: var(--accent);
}

.page {
  max-width: 1040px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.masthead {
  margin-bottom: 24px;
}

.masthead-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
}

.journal-title {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.journal-issue {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.95rem;
  color: var(--muted);
}

.masthead-rule {
  height: 1px;
  background: var(--rule);
  margin: 12px 0 10px;
}

.masthead-meta {
  font-family: "Helvetica Neue", Arial, sans-serif;
  color: var(--muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.masthead-nav {
  margin-top: 10px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.masthead-nav a {
  color: var(--muted);
  border-bottom: none;
}

.masthead-nav a:hover {
  color: var(--accent);
}

.article {
  background: var(--paper);
  border: 1px solid var(--rule);
  box-shadow: 0 10px 24px var(--shadow);
}

article {
  padding: 44px 54px 64px;
  counter-reset: section;
}

.article-header {
  margin-bottom: 24px;
}

.section-label {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin: 0 0 12px;
}

h1 {
  font-size: 2.6rem;
  line-height: 1.15;
  margin: 0 0 20px;
}

h2 {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin: 32px 0 12px;
  color: var(--ink);
  position: relative;
}

section > h2::before {
  counter-increment: section;
  content: counter(section) ". ";
  color: var(--accent);
}

.abstract h2::before,
.references h2::before {
  content: "";
}

h3 {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 1.1rem;
  margin: 22px 0 8px;
  color: var(--ink);
}

p {
  margin: 0 0 14px;
}

.abstract {
  background: var(--panel);
  border-left: 4px solid var(--accent);
  padding: 18px 20px;
}

.abstract h2 {
  margin-top: 0;
}

.callout {
  margin: 18px 0 16px;
  padding: 16px 20px;
  background: var(--panel);
  border-left: 4px solid var(--accent);
}

.callout p {
  margin: 0;
}

.related-note {
  margin: 18px 0 12px;
  padding: 12px 16px;
  background: #f8f4ee;
  border-left: 4px solid var(--accent);
}

.related-note p {
  margin: 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.95rem;
}

.related-note strong {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: var(--muted);
}

.rule {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 28px 0;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--rule);
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

th,
td {
  border-bottom: 1px solid var(--rule);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

th {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: #f8f4ee;
}

tbody tr:nth-child(even) {
  background: #fbf9f5;
}

ul,
ol {
  padding-left: 22px;
  margin: 0 0 16px;
}

li {
  margin-bottom: 8px;
}

blockquote {
  margin: 16px 0 18px;
  padding: 12px 18px;
  background: #f8f4ee;
  border-left: 4px solid var(--accent);
  font-style: italic;
}

sup {
  font-size: 0.75em;
}

sup a {
  border-bottom: none;
  padding-left: 2px;
}

.faq h3 {
  margin-top: 20px;
}

.references ol {
  padding-left: 20px;
}

.references li {
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.site-footer {
  margin-top: 32px;
  padding: 24px 32px 22px;
  background: #f8f4ee;
  border: 1px solid var(--rule);
  box-shadow: 0 8px 18px var(--shadow);
  font-family: "Helvetica Neue", Arial, sans-serif;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px 24px;
}

.footer-title {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.footer-heading {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 10px;
}

.footer-text {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-links,
.footer-meta {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li,
.footer-meta li {
  margin: 0 0 8px;
  font-size: 0.9rem;
  color: var(--muted);
}

.footer-rule {
  height: 1px;
  background: var(--rule);
  margin: 16px 0 12px;
}

.footer-note,
.footer-copy {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.85rem;
}

.cta-modal {
  position: fixed;
  inset: 0;
  background: rgba(22, 18, 13, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 120;
}

.cta-modal.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.cta-modal__dialog {
  position: relative;
  width: min(640px, 92vw);
  background: var(--paper);
  border: 1px solid var(--rule);
  box-shadow: 0 18px 40px var(--shadow);
  padding: 28px 32px 26px;
}

.cta-modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  border: 1px solid var(--rule);
  background: #fff;
  color: var(--muted);
  width: 32px;
  height: 32px;
  border-radius: 999px;
  font-size: 1.1rem;
  cursor: pointer;
}

.cta-modal__eyebrow {
  font-family: "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  color: var(--muted);
  margin: 0 0 12px;
}

.cta-modal__title {
  font-size: 1.6rem;
  line-height: 1.2;
  margin: 0 0 12px;
}

.cta-modal__title-link {
  border-bottom: none;
}

.cta-modal__text {
  margin: 0 0 18px;
  color: var(--muted);
}

.cta-modal__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.75rem;
  border-bottom: none;
}

.cta-modal__button:hover {
  background: #641515;
}

@media (max-width: 900px) {
  article {
    padding: 36px 32px 48px;
  }

  h1 {
    font-size: 2.2rem;
  }

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

@media (max-width: 600px) {
  .page {
    padding: 28px 16px 60px;
  }

  article {
    padding: 28px 22px 40px;
  }

  h1 {
    font-size: 1.9rem;
  }

  .journal-title {
    font-size: 1rem;
  }

  .site-footer {
    padding: 22px 20px 18px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .cta-modal__dialog {
    padding: 24px 22px 22px;
  }

  .cta-modal__title {
    font-size: 1.35rem;
  }
}