:root{
  --ink:#1a1814;
  --paper:#f8f5ef;
  --paper-2:#efeae0;
  --rust:#8a3a1c;
  --rust-2:#5e2812;
  --gold:#b08a3e;
  --muted:#6b645a;
  --rule:#d8d1c2;
  --shadow:0 1px 2px rgba(26,24,20,.08), 0 8px 24px rgba(26,24,20,.06);
  --serif:'Crimson Pro', Georgia, 'Times New Roman', serif;
  --sans:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--paper);color:var(--ink);font-family:var(--serif);font-size:18px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--rust);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px}
a:hover{color:var(--rust-2)}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}

/* Masthead */
.masthead{
  background:linear-gradient(180deg,#2c2823 0%, #1a1814 100%);
  color:#f4ede0;
  padding:28px 0 24px;
  border-bottom:6px solid var(--rust);
  background-image:linear-gradient(180deg,rgba(44,40,35,.92), rgba(26,24,20,.96)),
    url("hero.jpg");
  background-size:cover;
  background-position:center 35%;
}
.masthead .kicker{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--gold);
  margin:0 0 12px;
  font-weight:600;
}
.masthead h1{
  font-family:var(--serif);
  font-weight:700;
  font-size:clamp(38px, 5.6vw, 67px);
  line-height:1;
  margin:0;
  letter-spacing:-.02em;
}
.masthead .sub{
  font-family:var(--serif);
  font-style:italic;
  font-size:clamp(20px, 2.2vw, 26px);
  color:#e6dcc8;
  margin:0 0 10px;
  max-width:780px;
}
.masthead .meta{
  font-family:var(--sans);
  font-size:14px;
  letter-spacing:.04em;
  color:#bfb39a;
  margin:14px 0 0;
}

/* Era nav (sticky tabs) */
.era-nav{
  position:sticky;
  top:0;
  z-index:50;
  background:var(--paper);
  border-bottom:1px solid var(--rule);
  box-shadow:0 1px 0 rgba(0,0,0,.04);
}
.era-nav .wrap{
  display:flex;
  gap:4px;
  overflow-x:auto;
  scrollbar-width:thin;
  padding-top:0;
  padding-bottom:0;
}
.era-btn{
  appearance:none;
  background:transparent;
  border:0;
  border-bottom:3px solid transparent;
  font-family:var(--sans);
  font-weight:600;
  font-size:13px;
  color:var(--muted);
  padding:14px 16px 12px;
  cursor:pointer;
  white-space:nowrap;
  line-height:1.25;
  transition:all .15s ease;
}
.era-btn span{
  display:block;
  font-weight:500;
  font-size:11px;
  color:var(--muted);
  margin-top:2px;
  letter-spacing:.02em;
}
.era-btn:hover{color:var(--ink)}
.era-btn:hover span{color:var(--ink)}
.era-btn.active{
  color:var(--rust);
  border-bottom-color:var(--rust);
}
.era-btn.active span{color:var(--rust-2)}

/* Era sections */
.era{padding:24px 0 16px}
.era.hidden{display:none}
.era-hd{max-width:780px;margin:0 auto 18px;text-align:center}
.era-tag{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--rust);
  margin:0 0 8px;
  font-weight:600;
}
.era-hd h2{
  font-family:var(--serif);
  font-weight:700;
  font-size:clamp(32px, 4.4vw, 48px);
  margin:0 0 14px;
  line-height:1.1;
  letter-spacing:-.01em;
}
.era-dek{
  font-style:italic;
  font-size:20px;
  color:#3a3530;
  margin:0;
  line-height:1.55;
}

.era-body{
  display:grid;
  grid-template-columns:minmax(0, 1fr);
  gap:32px;
  max-width:980px;
  margin:0 auto;
}
.era-body p{margin:0 0 1.1em}
.era-body h3{
  font-family:var(--serif);
  font-weight:700;
  font-size:28px;
  margin:32px 0 12px;
  line-height:1.2;
}
.era-body h4{
  font-family:var(--sans);
  font-weight:600;
  font-size:14px;
  letter-spacing:.12em;
  text-transform:uppercase;
  margin:24px 0 8px;
  color:var(--rust);
}

figure{
  margin:24px 0;
  background:var(--paper-2);
  border:1px solid var(--rule);
  border-radius:4px;
  overflow:hidden;
  box-shadow:var(--shadow);
}
figure img{display:block;width:100%;height:auto}
figcaption{
  font-family:var(--sans);
  font-size:13px;
  color:var(--muted);
  padding:12px 16px;
  border-top:1px solid var(--rule);
  line-height:1.5;
}
figcaption strong{color:var(--ink);font-weight:600}

.timeline{
  background:var(--paper-2);
  border:1px solid var(--rule);
  border-radius:4px;
  padding:20px 24px;
  margin:24px 0;
}
.timeline h4{margin-top:0}
.timeline dl{margin:0;display:grid;grid-template-columns:max-content 1fr;gap:6px 18px}
.timeline dt{font-family:var(--sans);font-weight:700;color:var(--rust);font-size:14px;padding-top:2px}
.timeline dd{margin:0;font-size:16px;line-height:1.5}

.facts{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(180px, 1fr));
  gap:14px;
  margin:24px 0;
}
.fact{
  background:#fff;
  border:1px solid var(--rule);
  border-radius:4px;
  padding:16px 18px;
}
.fact .label{font-family:var(--sans);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 6px;font-weight:600}
.fact .value{font-family:var(--serif);font-size:22px;font-weight:600;line-height:1.2;margin:0}

.sources{
  margin:32px 0;
  font-size:15px;
}
.sources h4{margin-bottom:10px}
.sources ol{padding-left:22px;margin:0}
.sources li{margin:0 0 8px;line-height:1.5}

/* Footer */
.site-foot{
  background:#2c2823;
  color:#bfb39a;
  padding:36px 0 28px;
  margin-top:60px;
  font-family:var(--sans);
  font-size:14px;
  line-height:1.55;
}
.site-foot a{color:var(--gold)}
.site-foot p{margin:0 0 8px}
.site-foot .small{font-size:12px;color:#867c6c}

/* Stub when era not yet populated */
.era-stub{
  text-align:center;
  padding:48px 24px;
  background:var(--paper-2);
  border:1px dashed var(--rule);
  border-radius:4px;
  color:var(--muted);
  font-style:italic;
}

/* Image gallery within era */
.gallery{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(260px, 1fr));
  gap:16px;
  margin:24px 0;
}

/* Responsive */
@media (max-width: 720px){
  body{font-size:17px}
  .masthead{padding:40px 0 32px}
  .era{padding:36px 0 8px}
  .era-hd{margin-bottom:12px}
  .era-dek{font-size:18px}
}