:root {
  --bg: #FBF6EA;
  --surface: #FFFFFF;
  --ink: #1F2937;
  --muted: #6B7280;
  --line: #E7DCC6;
  --accent: #8B5E34;
  --accent2: #0F3D3E;
  --seal: #B91C1C;
  --shadow: 0 12px 30px rgba(31, 41, 55, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(circle at 15% 15%, rgba(139, 94, 52, 0.08), transparent 38%),
    radial-gradient(circle at 80% 40%, rgba(15, 61, 62, 0.06), transparent 45%),
    repeating-linear-gradient(0deg, rgba(31, 41, 55, 0.018), rgba(31, 41, 55, 0.018) 1px, transparent 1px, transparent 3px),
    var(--bg);
  line-height: 1.6;
}

h1, h2, h3 {
  margin: 0 0 0.6rem;
  font-family: Georgia, "Times New Roman", Times, serif;
  line-height: 1.2;
}

p {
  margin: 0 0 1rem;
}

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0.5rem;
  z-index: 100;
  background: var(--accent2);
  color: #fff;
  padding: 0.65rem 0.9rem;
  border-radius: 0.4rem;
}

.skip-link:focus-visible {
  left: 0.5rem;
}

:focus-visible {
  outline: 3px solid var(--accent2);
  outline-offset: 3px;
}

.site-rail {
  position: fixed;
  left: 0;
  top: 0;
  width: 300px;
  height: 100vh;
  border-right: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(251, 246, 234, 0.95)),
    repeating-linear-gradient(180deg, rgba(139, 94, 52, 0.045), rgba(139, 94, 52, 0.045) 2px, transparent 2px, transparent 4px);
}

.rail-inner {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 1.2rem 1rem 1rem;
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  gap: 1rem;
}

.logo-mark {
  width: 78px;
  height: 78px;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--surface);
}

.menu-toggle {
  display: none;
}

.rail-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.chip-link {
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  font-size: 0.84rem;
}

.chip-link.is-active,
.exhibit-index a.is-active {
  border-color: var(--accent2);
  color: var(--accent2);
  background: rgba(15, 61, 62, 0.08);
}

.exhibit-index {
  border-top: 1px solid var(--line);
  padding-top: 0.8rem;
}

.index-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
  margin-bottom: 0.55rem;
}

.exhibit-index ol {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.4rem;
  font-size: 0.9rem;
}

.mobile-menu {
  display: none;
}

main {
  margin-left: 300px;
}

.room {
  padding: clamp(2rem, 4vw, 4rem) clamp(1rem, 4vw, 3.2rem);
  min-height: 72vh;
  border-bottom: 1px solid var(--line);
}

.room-parchment {
  background:
    radial-gradient(circle at 65% 30%, rgba(139, 94, 52, 0.08), transparent 42%),
    repeating-linear-gradient(45deg, rgba(31, 41, 55, 0.014), rgba(31, 41, 55, 0.014) 1px, transparent 1px, transparent 4px),
    var(--bg);
}

.room-ink {
  background:
    linear-gradient(160deg, rgba(15, 61, 62, 0.95), rgba(19, 52, 54, 0.98)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.015), rgba(255, 255, 255, 0.015) 2px, transparent 2px, transparent 6px);
  color: #f5f4ef;
}

.room-ink .btn-outline {
  color: #f5f4ef;
  border-color: rgba(255, 255, 255, 0.6);
}

.room-glass {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.65)),
    radial-gradient(circle at 10% 20%, rgba(15, 61, 62, 0.07), transparent 30%),
    var(--bg);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.3rem;
  flex-wrap: wrap;
}

.kicker {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.78rem;
  font-weight: 700;
}

.room-ink .kicker {
  color: #f3d7bc;
}

.entry-card {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 1rem;
  padding: clamp(1.1rem, 3vw, 2.1rem);
}

.room-entry {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
  align-items: stretch;
}

#home h1 {
  font-size: clamp(2.2rem, 5vw, 4.2rem);
}

.subtitle {
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  max-width: 44ch;
  color: var(--muted);
}

.entry-lead {
  margin: 0.85rem 0 0;
  max-width: 56ch;
  color: var(--ink-soft);
}

.entry-points {
  margin: 0.8rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.32rem;
  color: var(--muted);
}

.entry-statbar {
  margin-top: 0.95rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
}

.entry-stat {
  margin: 0;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.65);
  border-radius: 0.7rem;
  padding: 0.52rem 0.65rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.entry-stat strong {
  color: var(--ink);
  font-size: 0.95rem;
}

.highlight-artifact {
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-rows: minmax(240px, 1fr) auto;
}

.highlight-body {
  padding: 1rem;
}

.cta-row {
  margin-top: 0.95rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: 0.58rem 0.92rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
}

.btn-bronze {
  background: var(--accent);
  color: #fff;
}

.btn-outline {
  border-color: var(--accent);
  color: var(--accent);
  background: transparent;
}

.exhibit-rooms {
  display: grid;
  gap: 1rem;
}

.exhibit-panel {
  display: grid;
  grid-template-columns: minmax(240px, 36%) 1fr;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1rem;
  overflow: hidden;
}

.exhibit-panel .panel-body {
  padding: 1rem;
}

.exhibit-panel ul {
  margin: 0 0 1rem;
  padding-left: 1.1rem;
}

.era-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.era-btn,
.region-chip {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  font-weight: 600;
}

.era-btn.is-active,
.region-chip.is-active {
  border-color: var(--accent2);
  color: var(--accent2);
  background: rgba(15, 61, 62, 0.08);
}

.timeline-layout {
  display: grid;
  grid-template-columns: 1fr minmax(200px, 300px);
  gap: 1rem;
}

.milestones {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1rem;
  border-left: 2px dashed var(--line);
  display: grid;
  gap: 0.75rem;
}

.milestone {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  padding: 0.9rem;
}

.milestone::before {
  content: "";
  position: absolute;
  left: -1.45rem;
  top: 1rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--accent);
}

.milestone[hidden] {
  display: none;
}

.era-note {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 0.9rem;
  padding: 1rem;
  align-self: start;
}

.artifact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.artifact-card {
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 8px 20px rgba(31, 41, 55, 0.06);
  cursor: pointer;
}

.artifact-body {
  padding: 0.75rem;
}

.artifact-body .meta {
  color: var(--accent2);
  font-size: 0.86rem;
}

.map-board {
  display: grid;
  grid-template-columns: minmax(210px, 280px) 1fr;
  gap: 1rem;
  align-items: stretch;
}

.map-regions {
  display: grid;
  gap: 0.5rem;
  align-content: start;
  padding: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 0.9rem;
  background: rgba(8, 28, 30, 0.26);
}

#map .section-head {
  justify-content: flex-start;
  gap: 1.5rem;
}

.room-ink .region-chip {
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink);
  border-color: rgba(255, 255, 255, 0.7);
}

.room-ink .region-chip.is-active {
  background: var(--accent);
  color: #fff;
  border-color: #f1d2b4;
}

.map-display {
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
  min-height: 380px;
  padding: 1rem;
  background-size: cover;
  background-position: center;
  background-blend-mode: multiply;
  display: grid;
  align-content: start;
  gap: 0.8rem;
}

.map-display h3 {
  margin-top: 0.1rem;
}

#story-pins {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

#story-pins li {
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 0.6rem;
  padding: 0.6rem;
  backdrop-filter: blur(1px);
}

.curator-plaque {
  max-width: 900px;
  border: 1px solid var(--line);
  border-left: 6px solid var(--accent);
  background:
    repeating-linear-gradient(0deg, rgba(139, 94, 52, 0.035), rgba(139, 94, 52, 0.035) 2px, transparent 2px, transparent 5px),
    var(--surface);
  border-radius: 0.8rem;
  box-shadow: var(--shadow);
  padding: clamp(1rem, 2vw, 1.8rem);
}

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

blockquote {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: var(--surface);
  padding: 0.9rem;
}

.seal {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--seal);
  margin-bottom: 0.6rem;
}

.membership-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.tier {
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 0.8rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.07);
}

.tier ul {
  margin: 0 0 1rem;
  padding-left: 1rem;
}

.tier-note {
  color: #f3d7bc;
}

.progress-wrap {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1rem;
}

.counter-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.counter-grid article {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 0.8rem;
  padding: 1rem;
}

.count {
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  font-family: Georgia, "Times New Roman", Times, serif;
  color: var(--accent);
  margin: 0;
}

.restoration-bars {
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: var(--surface);
  padding: 1rem;
  display: grid;
  gap: 0.8rem;
}

.bar-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.bar-track {
  height: 0.7rem;
  border-radius: 999px;
  background: #efe6d6;
  overflow: hidden;
}

.bar-fill {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transition: width 1.2s ease;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(230px, 320px) 1fr;
  gap: 1rem;
}

.guidelines,
.contact-form {
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: var(--surface);
  padding: 1rem;
}

.guidelines ul {
  margin: 0;
  padding-left: 1rem;
}

.contact-form {
  display: grid;
  gap: 0.55rem;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #d7ccb4;
  border-radius: 0.5rem;
  padding: 0.6rem;
  font: inherit;
  color: inherit;
  background: #fff;
}

.form-success {
  margin: 0.2rem 0 0;
  color: var(--accent2);
  font-weight: 600;
}

footer {
  margin-left: 300px;
  border-top: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(251, 246, 234, 0.96)),
    var(--bg);
  padding: 2rem clamp(1rem, 4vw, 3.2rem);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr 1fr;
  gap: 1rem;
}

.footer-grid h2 {
  font-size: 1.1rem;
}

.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}

.newsletter {
  display: grid;
  gap: 0.55rem;
}

.footer-base {
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 60;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(13, 23, 34, 0.68);
}

.modal-panel {
  position: relative;
  margin: 4vh auto;
  width: min(92vw, 920px);
  max-height: 92vh;
  background: var(--surface);
  border-radius: 1rem;
  overflow: auto;
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
  z-index: 1;
}

.modal-close {
  position: absolute;
  right: 0.6rem;
  top: 0.6rem;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 50%;
  width: 2rem;
  height: 2rem;
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
}

.modal-content {
  padding: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 0.9rem;
}

th,
td {
  border: 1px solid var(--line);
  text-align: left;
  padding: 0.5rem;
}

@media (max-width: 1100px) {
  .artifact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .room-entry,
  .progress-wrap {
    grid-template-columns: 1fr;
  }

  .entry-statbar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .site-rail {
    position: sticky;
    width: 100%;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    z-index: 40;
  }

  .rail-inner {
    height: auto;
    position: static;
    grid-template-columns: auto auto;
    grid-template-rows: auto;
    align-items: center;
    padding: 0.8rem 1rem;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    margin-left: auto;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.45rem 0.75rem;
    background: var(--surface);
    cursor: pointer;
  }

  .menu-bars {
    display: inline-block;
    width: 15px;
    height: 2px;
    background: currentColor;
    box-shadow: 0 5px 0 currentColor, 0 -5px 0 currentColor;
  }

  .rail-nav,
  .exhibit-index {
    display: none;
  }

  .mobile-menu {
    position: fixed;
    inset: 0;
    background: rgba(15, 61, 62, 0.96);
    z-index: 50;
    display: grid;
    align-content: center;
    justify-items: center;
    gap: 0.9rem;
  }

  .mobile-menu a {
    color: #fff;
    font-size: 1.2rem;
    font-family: Georgia, "Times New Roman", Times, serif;
  }

  main,
  footer {
    margin-left: 0;
  }

  .timeline-layout,
  .contact-layout,
  .map-board,
  .membership-grid,
  .counter-grid,
  .quote-grid,
  .artifact-grid,
  .exhibit-panel {
    grid-template-columns: 1fr;
  }

  .room {
    min-height: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}