*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  :root {
    --bg: #efefef;
    --bg-hf:#fff;
    --ink: #1a1a18;
    --border: #b0aca2;
    --border-light: #ccc8be;
    --muted: #888;
    --dim: #aaa;
    --med: #606060;
    --accent: #b07535;
    --font: 'IBM Plex Mono', 'Courier New', monospace;
    --chica: 'Space Mono', monospace;
    --bg-button:#e0e0e0;
    --accent-button:#000;
  }

  body {
    background: var(--bg);
    font-family: var(--font);
    font-size: 15px;
    color: var(--ink);
    line-height: 1.4;
  }

  a { color: inherit; text-decoration: none; }

  /* ── HEADER ── */
  
  header {
    background:var(--bg-hf);
    border-bottom: 1px solid var(--border);
    padding: 10px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center; font-family: var(--chica);
    font-size: 13px;
    color: var(--ink);
    line-height: 1.6;
  }

  .meta {
    font-size: 11px;
    color: var(--ink);
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }

  .blink {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    animation: parpadeo 1s infinite;
  }

  @keyframes parpadeo {
    0%,100% { opacity: 1; }
    50%      { opacity: 0; }
  }

  /* ── MAIN ── */

  main {
    max-width: 90%;
    margin: 0 auto;
    padding: 0 40px;
  }

  .titulo {
    font-size: 11px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }

  /* ── HERO ── */
  .hero {
    border-bottom: 1px solid var(--border);
    padding: 50px 0 40px;
  }

  .hero h1 {
    font-size: 62px;
    font-weight: 300;
    line-height: 1.1;
    margin: 20px 0 24px;
    letter-spacing: -0.02em;
  }

  .hero .sub {
    font-size: 20px;
    color: var(--muted);
    margin-bottom: 20px;
  }

  .hero .body {
    max-width: 99%;
    font-size: 2em;
    line-height: 1.75;
    color: #555;
  }

  .hero .body strong {
    color: var(--ink);
    font-weight: 500;
  }

  /* ── NOVEDADES ── */
  .novedades {
    border-bottom: 1px solid var(--border);
    padding: 50px 0;
  }

  .novedades blockquote {
    font-size: 1.3em;
    font-weight: 400;
    line-height: 1.45;
    max-width: 99%;
    margin: 14px 0 18px;
    color: var(--ink);
  }
/* ════════════════════════════════════════
   BOTONES UNIFICADOS
   ════════════════════════════════════════ */

.btn-link,
.arc-action {
  font-family: var(--font) !important;
  font-size: 10px !important;
  text-transform: uppercase;
  letter-spacing: 0.09em;

  color: var(--muted) !important;
  border: 1px solid var(--ink) !important;

  padding: 4px 11px !important;
  background: transparent;

  cursor: pointer;
  transition: background .15s, color .15s;

  -webkit-appearance: none;
  appearance: none;

  border-radius: 0;

  display: inline-block;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.4 !important;
}

/* hover */
.btn-link:hover,
.btn-link:active,
.arc-action:hover,
.arc-action:active {
  background: var(--ink);
  color: var(--bg-hf) !important;
}

.btn-link:active,
.arc-action:active {
  opacity: 0.8;
}

.btn-link {
  align-self: flex-start;
}
/* ── COLABORACION ── */
.colaboracion-grid {
  display: grid;
  grid-template-columns: 1fr 1fr; /* Dos columnas iguales que ocupan el 100% */
  gap: 40px;                     
  align-items: start;
  border-bottom: 1px solid var(--border);
  padding: 50px 0;
}

.colaboracion-col {
  display: flex;
  flex-direction: column;
  justify-content:开; /* Alinea el contenido arriba */
  height: 100%;       /* Para que ambas columnas tengan la misma altura potencial */
}

.colaboracion-col .titulo {
  font-weight: bold; /* O el estilo que ya tengas para tus títulos */
  margin: 0;
}

.colaboracion-col blockquote {
  font-size: 1.25em;   /* Un toque más sutil para que no quede gigante */
  font-weight: 400;
  line-height: 1.45;
  margin: 16px 0 24px; /* Espaciado armónico arriba y abajo */
  color: var(--ink);
}

/* Estilo opcional para la aclaración de formatos (reemplaza al <BR>) */
.colaboracion-col blockquote .formatos {
  display: block;
  font-size: 0.75em;
  opacity: 0.8;
  margin-top: 12px;
  line-height: 1.3;
}

/* Estilo base para los botones (por si acaso) */
.btn-link {
  align-self: flex-start; /* Evita que el botón se estire a lo ancho */
  text-decoration: none;
  /* Agregá acá tu estilo visual de botón (background, color, etc.) */
}

/* ════════════════════════════════════════
     ACORDEÓN 
  ════════════════════════════════════════ */

  .archivo-nav {
    padding: 60px 0 80px;
  }

  /* Cada bloque principal */
  .arc-section { 
    border-top: 1px solid var(--border);}
  .arc-section:first-of-type { border-top: none; }
  .arc-section:last-of-type {
    border-bottom: none;
  }

  /* Reset del summary nativo */
  .arc-section > summary { list-style: none; cursor: pointer; }
  .arc-section > summary::-webkit-details-marker { display: none; }

  /* Cabecera: num + título + desc a la izquierda / + a la derecha */
  
  .arc-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 20px 0;
    user-select: none;
    gap: 16px;
  }

  .arc-left {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    flex: 1;
    min-width: 0;
  }

  .arc-num {
    font-family: var(--font);
    font-size: 11px;
    color: var(--ink);
    line-height: 1.6;
    color: var(--dim);
    flex-shrink: 0;
    padding-top: 5px;
    width: 28px;
    transition: color 0.2s;
  }

  .arc-numtotal{
    font-size: 11px;
    color: var(--med);
    flex-shrink: 0;
    padding-top: 5px;
    transition: color 0.2s;
  }

  .arc-title-block {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .arc-title {
    font-size: 2.3em;
    font-weight: 400;
    letter-spacing: -0.01em;
    line-height: 1.2;
    transition: color 0.15s;
  }

  .arc-desc {
    font-size: 13px;
    color: var(--med);
    line-height: 1.55;
    max-width: 100%;
    font-style: normal;
  }

  .arc-toggle {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--dim);
    margin-top: 2px;
    transition: transform 0.3s ease, color 0.2s;
    transform-origin: center center;
  }

  /* Estado abierto */
  .arc-section.is-open .arc-toggle {
    transform: rotate(45deg);
    color: var(--accent);
  }
  .arc-section.is-open .arc-num   { color: var(--accent); }
  .arc-section.is-open .arc-title { color: var(--ink); }

  .arc-header:hover .arc-title { color: var(--accent); }

  /* Panel animado */
  .arc-body {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.38s cubic-bezier(0.4, 0, 0.2, 1), opacity   0.28s ease;
    opacity: 0;
    padding-left: 44px;
  }

  .arc-section.is-open .arc-body {
    max-height: 3000px;
    opacity: 1;
    padding-bottom: 20px;
  }

  /* Filas de subitems */
  .arc-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 11px 0;
    flex-wrap: nowrap;
  }

  /* Separador en todas menos la última */
  .arc-item:not(:last-child) {
    border-bottom: 1px dashed var(--border-light);
  }

  .arc-item-left {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    flex: 1;
    min-width: 0;
  }

  .arc-item-num {
    font-size: 11px;
    color: var(--med);       
    flex-shrink: 0;
    width: 40px;      
    padding-top: 7px;
    font-family: var(--font);
    letter-spacing: 0.02em;
  }


  .arc-item-info {
    display: flex;
    flex-direction: column;
    gap: 3px;
  }

  .arc-item-label {
    font-size: 23px;
    font-weight: 400;
    color: var(--ink);
    line-height: 1.5;
  }

  .arc-item-meta {
    font-size: 10px;
    color: var(--dim);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    line-height: 1.4;
  }

  /* Botones de acción — los únicos con <a> */
  .arc-item-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
    align-items: center;
    flex-wrap: nowrap;
  }

  .arc-subitem {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border-light); 
  }
.arc-subitem a {
    display: flex;
    align-items: baseline;
    gap: 7px;
    font-size: 12px;
    color: var(--ink);
    line-height: 2;
    transition: color 0.15s;
    font-family: var(--font);
  }

  .arc-subitem a::before {
    /*content: '›';*/
    font-size: 11px;
    color: var(--dim);
    flex-shrink: 0;
  }
  .arc-subitem a:hover { color: var(--accent); }

  .arc-subitem:last-of-type {
  border-bottom: none; /* Evita doble línea al cerrar el bloque */
  }

  .arc-subitem-num {
  font-size: 11px;
  color: var(--med);       
  flex-shrink: 0;
  width: 100%;            
  padding-top: 0px;
  font-family: var(--dim);
  letter-spacing: 0.02em;
}

  .arc-subitem-title {
    display: flex;
    align-items: baseline;
    gap: 5px;
    font-size: 14px;
    font-family: var(--font);
    color: var(--ink);
  }
  .arc-subsubitem-title {
    display: flex;
    align-items: baseline;
    gap: 5px;
    font-size: 12px;
    font-family: var(--font);
    color: var(--ink);
  }

.arc-subitem-label {
    font-size: 16px;
    font-weight: 300;
    color: var(--ink);
    line-height: 1.5;
  }

  .arc-subitem-title span:first-child {
    font-weight: normal;
    letter-spacing: 0.04em;
  }

  /* ── FOOTER ── */
  footer {
    background:var(--bg-hf);
    border-top: 1px solid var(--border);
    padding: 0;
  }

  .footer-inner {
    max-width: 90%;
    margin: 0 auto;
    padding: 50px 40px 56px;
    display: grid;
    grid-template-columns:1fr 1fr 2fr 0.7fr;
    gap: 48px;
    align-items: start;
  }

  .footer-col .titulo {
    margin-bottom: 18px;
  }

  .footer-list {
    border-left: 1px solid var(--border);
    padding-left: 16px;  
  }

  .footer-list a {
    display: flex;
    align-items: baseline;
    gap: 7px;
    font-size: 12px;
    color: var(--ink);
    line-height: 2;
    transition: color 0.15s;
    font-family: var(--font);
  }

  .footer-list a::before {
    content: '›';
    font-size: 11px;
    color: var(--dim);
    flex-shrink: 0;
  }

  .footer-list a:hover { color: var(--accent); }

  .footer-list-label {
    display: block;
    font-size: 10px;
    color: var(--dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 14px;
    margin-bottom: 0;
    line-height: 1.8;
  }


  .footer-list-label:first-child {
    margin-top: 0;
  }

  .footer-col .copy {
    font-size: 10px;
    color: var(--dim);
    margin-top: 22px;
    line-height: 1.6;
  }
.footer-list span {
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-size: 12px;
  color: #666;
  line-height: 2;
  font-family: var(--font);
}

.footer-list span::before {
  content: '›';
  font-size: 11px;
  color: var(--dim);
  flex-shrink: 0;
}
  /* ── RESPONSIVE ── */
  @media (max-width: 640px) {
    header {background:var(--bg-hf);padding-left: 20px; padding-right: 20px; }
    main {padding-left: 20px; padding-right: 20px; }
    .hero h1 { font-size: 47px; }
    .hero .sub { font-size: 14px; }
    .arc-title { font-size: 27px; }
    .arc-body { padding-left: 20px; }
    .footer-inner { grid-template-columns: 1fr; gap: 28px; }
    .colaboracion-grid { grid-template-columns: 1fr; gap: 24px; }
  }
@media (max-width: 640px) {

  .arc-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .arc-item-actions {
    width: 100%;
    margin-top: 10px;
    padding-left: 52px;
  }

  .arc-subitem {
    flex-direction: column;
    align-items: flex-start !important;
  }

  .arc-subitem .arc-item-actions {
    padding-left: 0;
    margin-top: 10px;
  }

}
@media (max-width: 640px) {

  .arc-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .arc-item-actions {
    width: 100%;
    margin-top: 10px;
    padding-left: 52px;
  }

  .arc-subitem {
    flex-direction: column;
    align-items: flex-start !important;
  }

  .arc-subitem .arc-item-actions {
    padding-left: 0;
    margin-top: 10px;
  }

  /* FIX EXHIBICIONES */
  .arc-body div[style*="justify-content: space-between"] {
    flex-direction: column;
    align-items: flex-start !important;
  }

}
@media (max-width: 640px) {

  .arc-body div[style*="justify-content: space-between"] .arc-item-actions {
    padding-left: 0;
    width: auto;
  }

}