:root {
  --aca-blue: #1986c8;
  --aca-green: #7aba40;
  --aca-red: #e8471b;
  --aca-yellow: #e9c109;
  --aca-ink: #1c3144;
  --aca-navy: #324052;
  --aca-paper: #ffffff;
  --aca-soft: #f3f7fa;
  --aca-line: #d8e1e8;
  --aca-blue-text: #116491;
  --aca-red-text: #9f2f12;
  --aca-shadow: 0 12px 28px rgba(28, 49, 68, 0.11);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 150px;
}

body.aca-field-notes {
  margin: 0;
  overflow-x: clip;
  background: var(--aca-paper);
  color: var(--aca-ink);
  font-family: Lato, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--aca-blue-text);
  text-underline-offset: 0.16em;
}

a:hover { color: var(--aca-red-text); }

:focus-visible {
  outline: 4px solid rgba(232, 71, 27, 0.68);
  outline-offset: 3px;
}

.screen-reader-text,
.skip-link:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.skip-link:focus {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 10000;
  color: #fff;
  background: var(--aca-ink);
  padding: 0.7rem 1rem;
}

.aca-container {
  width: min(1180px, calc(100vw - 40px));
  margin-inline: auto;
}

/* Canonical ACA shell */
.aca-utility-nav {
  color: #fff;
  background: var(--aca-navy);
}

.aca-utility-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 42px;
}

.aca-utility-tagline,
.aca-utility-links a {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
}

.aca-utility-links,
.aca-menu,
.aca-footer-menu,
.aca-blog-subnav ul,
.aca-donate-options {
  margin: 0;
  padding: 0;
  list-style: none;
}

.aca-utility-links {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.aca-primary-nav {
  position: sticky;
  top: 0;
  z-index: 80;
  overflow: visible;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.18);
}

.aca-primary-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  min-height: 104px;
}

.aca-brand {
  display: block;
  flex: 0 0 auto;
}

.aca-brand img,
.aca-brand .custom-logo,
.aca-brand-fallback-logo {
  width: auto;
  max-width: 220px;
  max-height: 100px;
}

.aca-mobile-wordmark { display: none; }

.aca-menu {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.2rem;
}

.aca-menu > li > a:not(.aca-donate-link) {
  display: flex;
  align-items: center;
  min-height: 52px;
  margin-inline: 0.45rem;
  color: var(--aca-ink);
  font-family: Montserrat, Lato, sans-serif;
  font-size: 0.94rem;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.aca-menu > li > a:not(.aca-donate-link):hover {
  color: var(--aca-blue-text);
}

.aca-donate-menu { margin-left: 0.8rem; }

.aca-donate-group {
  position: relative;
  display: flex;
}

.aca-donate-link,
.aca-donate-toggle {
  border: 2px solid #b83212;
  color: #fff;
  background: #b83212;
  font-family: Montserrat, Lato, sans-serif;
  font-weight: 800;
}

.aca-donate-link {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  border-radius: 7px 0 0 7px;
  padding: 0.55rem 1.35rem;
  text-decoration: none;
}

.aca-donate-toggle {
  position: relative;
  width: 44px;
  border-left-color: rgba(255, 255, 255, 0.3);
  border-radius: 0 7px 7px 0;
  cursor: pointer;
}

.aca-donate-toggle::after {
  position: absolute;
  top: 50%;
  left: 50%;
  border-top: 7px solid currentColor;
  border-right: 6px solid transparent;
  border-left: 6px solid transparent;
  content: "";
  transform: translate(-50%, -35%);
}

.aca-donate-group:hover .aca-donate-link,
.aca-donate-group:hover .aca-donate-toggle,
.aca-donate-toggle[aria-expanded="true"] {
  border-color: var(--aca-ink);
  background: var(--aca-ink);
}

.aca-donate-options {
  position: absolute;
  top: 100%;
  right: 0;
  display: none;
  min-width: 190px;
  border: 1px solid #b7c1ca;
  border-radius: 0 0 7px 7px;
  background: #eef1f4;
  box-shadow: var(--aca-shadow);
  overflow: hidden;
}

.aca-donate-group:hover .aca-donate-options,
.aca-donate-options.is-open { display: block; }

.aca-donate-options a {
  display: block;
  border-top: 1px solid #d3dae0;
  color: var(--aca-ink);
  font-weight: 800;
  padding: 0.7rem 1rem;
  text-decoration: none;
}

.aca-donate-options a:hover { background: #fff; }

.aca-nav-toggle {
  display: none;
  border: 1px solid var(--aca-line);
  border-radius: 7px;
  background: #fff;
  padding: 0.75rem;
}

.aca-nav-toggle-bars,
.aca-nav-toggle-bars::before,
.aca-nav-toggle-bars::after {
  display: block;
  width: 1.55rem;
  height: 3px;
  background: var(--aca-ink);
  content: "";
}

.aca-nav-toggle-bars::before { transform: translateY(-7px); }
.aca-nav-toggle-bars::after { transform: translateY(4px); }

.aca-scroll-progress {
  position: absolute;
  bottom: -4px;
  left: 0;
  width: var(--aca-scroll-progress, 0%);
  max-width: 100%;
  height: 4px;
  background: var(--aca-red);
  pointer-events: none;
}

.aca-blog-subnav {
  position: sticky;
  top: 104px;
  z-index: 60;
  border-bottom: 1px solid #d5dde4;
  background: #f4f6f8;
}

.aca-blog-subnav-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 46px;
  overflow-x: auto;
}

.aca-blog-home {
  flex: 0 0 auto;
  color: var(--aca-blue-text);
  font-family: Montserrat, Lato, sans-serif;
  font-size: 1rem;
  font-weight: 900;
  text-decoration: none;
}

.aca-blog-subnav nav { min-width: 0; }

.aca-blog-subnav ul {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  white-space: nowrap;
}

.aca-blog-subnav li + li { border-left: 1px solid #cbd4dc; padding-left: 1.25rem; }

.aca-blog-subnav nav a {
  color: #526272;
  font-size: 0.9rem;
  font-weight: 800;
  text-decoration: none;
}

/* Archive */
.aca-archive-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr);
  gap: 3rem;
  align-items: center;
  padding-block: clamp(2.7rem, 6vw, 5rem);
}

.aca-kicker,
.aca-post-meta {
  color: var(--aca-red-text);
  font-family: Montserrat, Lato, sans-serif;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.aca-archive-hero h1,
.aca-article-hero h1 {
  max-width: 900px;
  margin: 0.4rem 0 1rem;
  font-family: Montserrat, Lato, sans-serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.08;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.aca-archive-hero p,
.aca-article-dek {
  max-width: 760px;
  margin-bottom: 0;
  color: #526272;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
}

.aca-search-form {
  display: grid;
  gap: 0.55rem;
  border-left: 5px solid var(--aca-yellow);
  background: var(--aca-soft);
  padding: 1.1rem;
}

.aca-search-form label {
  font-family: Montserrat, Lato, sans-serif;
  font-weight: 900;
}

.aca-search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.5rem;
}

.aca-search-row input {
  min-width: 0;
  border: 1px solid #bac6cf;
  border-radius: 6px;
  font: inherit;
  padding: 0.7rem 0.8rem;
}

.aca-search-row button,
.aca-button-link {
  border: 0;
  border-radius: 6px;
  color: #fff;
  background: var(--aca-blue-text);
  font: inherit;
  font-weight: 900;
  padding: 0.72rem 1rem;
  text-decoration: none;
}

.aca-posts-section {
  border-top: 1px solid var(--aca-line);
  padding-block: 2.5rem 4rem;
}

.aca-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
}

.aca-section-head h2,
.aca-related-posts h2,
.aca-comments h2,
.aca-empty-state h1,
.aca-empty-state h2 {
  margin: 0;
  font-family: Montserrat, Lato, sans-serif;
}

.aca-card-grid,
.aca-related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.35rem;
  align-items: start;
}

.aca-post-card {
  min-width: 0;
  border: 1px solid var(--aca-line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--aca-shadow);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.aca-post-card:hover {
  box-shadow: 0 18px 36px rgba(28, 49, 68, 0.16);
  transform: translateY(-3px);
}

.aca-post-card-media {
  display: block;
  color: inherit;
  background: #eaf1f5;
}

.aca-post-card-image,
.aca-post-image-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #e6f1f4;
}

.aca-post-image-placeholder {
  display: grid;
  place-items: center;
  color: var(--aca-blue-text);
  font-family: Montserrat, Lato, sans-serif;
  font-size: 2rem;
  font-weight: 900;
}

.aca-post-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem 1.05rem 1.15rem;
}

.aca-post-card-body > * { margin: 0; }

.aca-post-card h3 {
  font-family: Montserrat, Lato, sans-serif;
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.aca-post-card h3 a {
  color: var(--aca-ink);
  text-decoration: none;
}

.aca-post-card h3 a:hover { color: var(--aca-blue-text); }

.aca-post-card p:not(.aca-post-meta) {
  display: -webkit-box;
  overflow: hidden;
  color: #526272;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.aca-post-meta { line-height: 1.4; }

.aca-read-more {
  width: fit-content;
  font-weight: 900;
  text-decoration: none;
}

.navigation.pagination { margin-top: 2.2rem; }

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  justify-content: center;
}

.page-numbers {
  min-width: 40px;
  border: 1px solid var(--aca-line);
  border-radius: 50%;
  background: #fff;
  padding: 0.48rem 0.7rem;
  text-align: center;
  text-decoration: none;
}

.page-numbers.current { color: #fff; background: var(--aca-blue-text); }

/* Articles */
.aca-article-hero {
  padding-block: clamp(2.2rem, 5vw, 4rem) 1.8rem;
}

.aca-breadcrumb,
.aca-article-published,
.aca-article-byline {
  color: #526272;
  font-weight: 800;
}

.aca-breadcrumb { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.aca-article-byline a,
.aca-article-published a { color: inherit; }

.aca-article-layout {
  display: grid;
  grid-template-columns: minmax(190px, 245px) minmax(0, 835px);
  gap: 2rem;
  align-items: start;
  padding-bottom: 5rem;
}

.aca-article-layout--wide { grid-template-columns: minmax(0, 860px); justify-content: center; }

.aca-article-toc {
  position: sticky;
  top: 168px;
  display: grid;
  gap: 0.25rem;
  max-height: calc(100vh - 190px);
  overflow: auto;
  border-top: 5px solid var(--aca-red);
  background: var(--aca-soft);
  padding: 0.9rem;
}

.aca-article-toc strong {
  margin-bottom: 0.35rem;
  font-family: Montserrat, Lato, sans-serif;
}

.aca-article-toc a {
  border-left: 3px solid transparent;
  color: #526272;
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.35;
  padding: 0.42rem 0.5rem;
  text-decoration: none;
}

.aca-article-toc .aca-toc-level-3 { padding-left: 1rem; }

.aca-article-toc a[aria-current="true"],
.aca-article-toc a:hover {
  border-left-color: var(--aca-red);
  color: var(--aca-blue-text);
  background: #fff;
}

.aca-article-main { min-width: 0; }
.aca-page-layout { max-width: 900px; padding-bottom: 5rem; }

.aca-article-image,
.aca-article-content,
.aca-related-posts,
.aca-post-nav,
.aca-comments,
.aca-empty-state {
  border: 1px solid var(--aca-line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--aca-shadow);
}

.aca-article-image { margin: 0 0 1.2rem; overflow: hidden; }

.aca-article-featured-image {
  width: 100%;
  max-height: 560px;
  object-fit: contain;
  background: #eef3f6;
}

.aca-article-image figcaption {
  padding: 0.75rem 1rem;
  color: #526272;
  font-size: 0.9rem;
}

.aca-article-content,
.aca-comments,
.aca-empty-state { padding: clamp(1.15rem, 4vw, 2rem); }

.aca-article-content > :first-child { margin-top: 0; }
.aca-article-content > :last-child { margin-bottom: 0; }

.aca-article-content p,
.aca-article-content li {
  font-size: 1.06rem;
  line-height: 1.78;
}

.aca-article-content h2,
.aca-article-content h3 {
  margin-top: 2rem;
  font-family: Montserrat, Lato, sans-serif;
  scroll-margin-top: 170px;
}

.aca-article-content li[id] { scroll-margin-top: 170px; }
.aca-article-content iframe { max-width: 100%; }

.aca-related-posts,
.aca-post-nav,
.aca-comments { margin-top: 1.25rem; }

.aca-related-posts { padding: 1.2rem; }
.aca-related-heading { margin-bottom: 1rem; }
.aca-related-heading .aca-kicker { margin: 0 0 0.25rem; }

.aca-related-grid .aca-post-card-body > p:not(.aca-post-meta) { display: none; }
.aca-related-grid .aca-post-card-body { min-height: 150px; }

.aca-post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  padding: 1rem;
}

.aca-post-nav a {
  display: block;
  border: 2px solid #d4e6f0;
  border-radius: 7px;
  color: var(--aca-blue-text);
  font-weight: 900;
  padding: 0.75rem 0.9rem;
  text-align: center;
  text-decoration: none;
}

/* Footer */
.aca-site-footer {
  color: #b8c1cb;
  background: #2c3e50;
  padding: 3rem 0 1.25rem;
}

.aca-footer-grid {
  display: grid;
  grid-template-columns: minmax(250px, 2fr) minmax(140px, 1fr) minmax(210px, 1.3fr) minmax(220px, 1.3fr);
  gap: 2rem;
}

.aca-site-footer h2 {
  margin-top: 0;
  color: #fff;
  font-family: Montserrat, Lato, sans-serif;
  font-size: 1.15rem;
}

.aca-footer-menu { display: grid; gap: 0.35rem; }
.aca-site-footer a { color: #dbe2e8; text-decoration: none; }
.aca-site-footer a:hover { color: #fff; text-decoration: underline; }

.aca-social-links { display: flex; gap: 0.8rem; margin-top: 1rem; }

.aca-social-links a {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: #fff;
  font-size: 1.15rem;
  font-weight: 900;
}

.aca-copyright {
  margin-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1rem;
  text-align: center;
}

@media (max-width: 1080px) {
  .aca-menu > li > a:not(.aca-donate-link) { margin-inline: 0.25rem; font-size: 0.85rem; }
  .aca-home-link { display: none; }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 72px; }
  .aca-container { width: min(100% - 28px, 720px); }
  .aca-primary-inner { min-height: 68px; }
  .aca-brand { display: none; }
  .aca-mobile-wordmark {
    display: block;
    max-width: 180px;
    color: #111;
    font-family: Montserrat, Lato, sans-serif;
    font-size: 0.88rem;
    font-weight: 900;
    line-height: 1.15;
    text-decoration: none;
  }
  .aca-nav-toggle { display: inline-flex; }
  .aca-menu {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border-top: 1px solid var(--aca-line);
    background: #fff;
    padding: 0.75rem 1rem 1rem;
    box-shadow: var(--aca-shadow);
  }
  .aca-menu.is-open { display: flex; }
  .aca-menu > li > a:not(.aca-donate-link) { min-height: 44px; margin: 0; }
  .aca-home-link { display: block; }
  .aca-donate-menu { margin: 0.5rem 0 0; }
  .aca-donate-group { width: 100%; }
  .aca-donate-link { flex: 1; }
  .aca-donate-options { right: auto; left: 0; width: 100%; }
  .aca-blog-subnav { top: 68px; }
  .aca-archive-hero,
  .aca-card-grid,
  .aca-related-grid,
  .aca-article-layout,
  .aca-footer-grid { grid-template-columns: 1fr; }
  .aca-archive-hero { gap: 1.5rem; padding-block: 2.5rem; }
  .aca-article-toc {
    position: static;
    max-height: none;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .aca-article-toc strong { grid-column: 1 / -1; }
  .aca-related-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .aca-utility-tagline { display: none; }
  .aca-utility-inner { justify-content: flex-end; }
  .aca-utility-links { width: 100%; justify-content: space-between; }
  .aca-blog-subnav-inner { gap: 1rem; }
  .aca-archive-hero h1,
  .aca-article-hero h1 { font-size: clamp(2.15rem, 11vw, 3rem); }
  .aca-section-head,
  .aca-post-nav { align-items: flex-start; grid-template-columns: 1fr; flex-direction: column; }
  .aca-search-row,
  .aca-related-grid,
  .aca-article-toc { grid-template-columns: 1fr; }
  .aca-article-toc strong { grid-column: auto; }
  .aca-post-card-body { padding: 0.95rem; }
  .aca-footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}