:root{
  --bg:#EDF0F3; --surface:#FFFFFF; --ink:#1C2430; --muted:#5E6878; --line:#C9D0D8;
  --enamel:#24408E; --enamel-ink:#FFFFFF; --signal:#F2C230; --link:#24408E;
  --head:"Overpass",system-ui,sans-serif; --body:"Source Serif 4",Georgia,serif;
}
@media (prefers-color-scheme:dark){
  :root{ --bg:#151A21; --surface:#1D242E; --ink:#E6EAF0; --muted:#9AA4B2; --line:#323C49; --enamel:#2F4FA8; --link:#8FB0FF; }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:1.125rem/1.7 var(--body)}
a{color:var(--link);text-underline-offset:.18em}
a:focus-visible,button:focus-visible{outline:3px solid var(--signal);outline-offset:3px}
img{max-width:100%;height:auto}
.wrap{max-width:68rem;margin:0 auto;padding:0 1.25rem}
.read{max-width:42rem}

/* Cabecera */
.top{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding-block:1.1rem}
.brand{font:700 1.05rem/1 var(--head);color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.top nav{display:flex;gap:1.1rem;font:500 .95rem/1 var(--head)}
.top nav a{color:var(--muted);text-decoration:none}
.top nav a:hover{color:var(--ink)}
.lang{border:1px solid var(--line);border-radius:6px;padding:.35rem .6rem}

/* Hero: la placa */
.hero{padding-block:3.5rem 3rem;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:3rem;align-items:center}
.plaque{background:var(--enamel);color:var(--enamel-ink);border-radius:14px;padding:1.6rem 1.8rem 1.4rem;border:6px solid #fff;box-shadow:0 0 0 2px var(--enamel),0 18px 40px rgba(20,30,60,.25);display:grid;grid-template-columns:auto 1fr;gap:1.2rem;align-items:center;max-width:30rem;transform:rotate(-1.5deg)}
.plaque .num{font:800 6.5rem/.8 var(--head);letter-spacing:-.04em}
.plaque .street{font:700 1.75rem/1.1 var(--head)}
.plaque .district{display:block;font:500 .95rem/1.3 var(--head);opacity:.85;margin-top:.45rem}
.plaque .q{grid-column:1/-1;border-top:2px solid rgba(255,255,255,.35);padding-top:.8rem;font:500 1rem/1.3 var(--head);display:flex;gap:.6rem;align-items:center}
.plaque .q svg{flex:0 0 auto}
@media (prefers-reduced-motion:no-preference){
  .plaque{animation:hang .9s cubic-bezier(.2,.8,.2,1) both}
  @keyframes hang{from{opacity:0;transform:translateY(-14px) rotate(-6deg)}to{opacity:1;transform:rotate(-1.5deg)}}
}
h1{font:800 clamp(2.4rem,5.2vw,4rem)/1.02 var(--head);letter-spacing:-.025em;margin:0 0 1.2rem}
.lede{font-size:1.3rem;line-height:1.55;margin:0 0 1.5rem}
.byline{font:500 .95rem/1.4 var(--head);color:var(--muted)}

/* Definición */
.definition{background:var(--surface);border-left:6px solid var(--enamel);border-radius:4px 12px 12px 4px;padding:1.6rem 1.8rem;margin:0 0 3.5rem}
.definition dt{font:700 1.4rem/1.2 var(--head);margin:0 0 .5rem}
.definition dd{margin:0;font-size:1.25rem;line-height:1.6}
.definition .cite{display:block;margin-top:1rem;font:500 .9rem/1.4 var(--head);color:var(--muted)}

section{padding:2.5rem 0;border-top:1px solid var(--line)}
h2{font:800 clamp(1.7rem,3vw,2.3rem)/1.12 var(--head);letter-spacing:-.02em;margin:0 0 1rem}
h3{font:700 1.2rem/1.3 var(--head);margin:1.6rem 0 .4rem}
p{margin:0 0 1.1rem}

/* Línea de tiempo: secuencia real */
.eras{list-style:none;margin:1.5rem 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:4px solid var(--line);counter-reset:era}
.eras li{padding:1.1rem 1rem 0 0;position:relative}
.eras li::before{content:"";position:absolute;top:-10px;left:0;width:16px;height:16px;border-radius:50%;background:var(--bg);border:4px solid var(--line)}
.eras li.now::before{background:var(--signal);border-color:var(--enamel)}
.eras .when{font:700 .95rem/1.2 var(--head);color:var(--muted)}
.eras .what{font:800 1.25rem/1.2 var(--head);margin:.3rem 0 .4rem}
.eras p{font-size:1rem;line-height:1.55;margin:0}
.eras li.now .what{color:var(--link)}

/* Comparación */
.compare{width:100%;border-collapse:collapse;margin:1.2rem 0;font-size:1rem;background:var(--surface);border-radius:10px;overflow:hidden}
.compare th,.compare td{text-align:left;padding:.75rem .9rem;border-bottom:1px solid var(--line);vertical-align:top}
.compare thead th{font:700 .95rem/1.2 var(--head);background:var(--enamel);color:#fff}
.compare tbody th{font:600 .95rem/1.3 var(--head);color:var(--muted);width:28%}

/* Capas */
.layers{display:grid;gap:.8rem;margin:1.2rem 0}
.layer{display:grid;grid-template-columns:12rem 1fr;gap:1rem;background:var(--surface);border-radius:10px;padding:1rem 1.2rem}
.layer b{font:700 1.05rem/1.3 var(--head)}
.layer span{font-size:1rem;line-height:1.55}

/* Pruebas */
.proofs{display:flex;gap:1rem;overflow-x:auto;scroll-snap-type:x mandatory;padding:.3rem .2rem 1rem;margin:1.2rem 0 .3rem}
.proof{flex:0 0 15.5rem;scroll-snap-align:start;display:flex;flex-direction:column;text-align:left;cursor:zoom-in;padding:0;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:inherit;font:inherit;overflow:hidden}
.proof img{width:100%;height:9.5rem;object-fit:cover;object-position:top;background:#202124}
.proof .b{padding:.7rem .85rem .85rem;display:grid;gap:.2rem}
.proof .k{font:700 .82rem/1.3 var(--head);color:var(--link)}
.proof .q{font:700 1rem/1.3 var(--head)}
.proof .d{font:500 .85rem/1.3 var(--head);color:var(--muted)}
.note{font:500 .88rem/1.45 var(--head);color:var(--muted)}
dialog.zoom{border:0;border-radius:12px;padding:0;max-width:min(94vw,64rem);background:#111;color:#fff}
dialog.zoom::backdrop{background:rgba(10,14,20,.8)}
dialog.zoom img{display:block;max-height:78vh;margin:0 auto}
dialog.zoom p{margin:0;padding:.8rem 1rem;font:500 .92rem/1.45 var(--head)}
dialog.zoom button{position:absolute;top:.5rem;right:.5rem;width:2.3rem;height:2.3rem;border-radius:50%;border:0;background:rgba(0,0,0,.65);color:#fff;font-size:1.1rem;cursor:pointer}

/* Inquilinos y principios */
.tenants{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.2rem;margin-top:1rem}
.tenants h3{margin-top:0}
.tenants p{font-size:1rem;line-height:1.6}
.charter{padding-left:1.2rem}
.charter li{margin:0 0 .7rem}

/* Glosario */
.glossary{display:grid;grid-template-columns:14rem 1fr;gap:.2rem 1.5rem;margin:1rem 0}
.glossary dt{font:700 1.02rem/1.5 var(--head);padding-top:.7rem;border-top:1px solid var(--line)}
.glossary dd{margin:0;padding-top:.7rem;border-top:1px solid var(--line);font-size:1rem;line-height:1.6}

/* Inventario */
.cities{list-style:none;padding:0;margin:1rem 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(14rem,1fr));gap:.8rem}
.cities li{background:var(--surface);border-radius:10px;padding:1rem 1.1rem;border:1px solid var(--line)}
.cities .c{font:800 1.25rem/1.2 var(--head);display:block}
.cities .s{font:500 .9rem/1.4 var(--head);color:var(--muted)}
.cities .open .s{color:var(--link)}

details{border-top:1px solid var(--line);padding:.8rem 0}
details summary{font:700 1.05rem/1.4 var(--head);cursor:pointer}
details p{margin:.6rem 0 0;font-size:1.02rem}

footer{border-top:1px solid var(--line);padding-block:2rem 3rem;font:500 .92rem/1.6 var(--head);color:var(--muted)}
footer a{color:inherit}

@media (max-width:860px){
  .hero{grid-template-columns:1fr;gap:2rem;padding-block-start:2rem}
  .plaque{max-width:22rem}
  .plaque .num{font-size:4.6rem}
  .plaque .street{font-size:1.35rem}
  .eras{grid-template-columns:1fr;border-top:0;border-left:4px solid var(--line);padding-left:1.2rem}
  .eras li{padding:0 0 1.2rem}
  .eras li::before{top:.15rem;left:-1.75rem}
  .tenants{grid-template-columns:1fr}
  .layer{grid-template-columns:1fr;gap:.2rem}
  .glossary{grid-template-columns:1fr}
  .glossary dd{border-top:0;padding-top:0}
  .top nav a:not(.lang){display:none}
  .compare{font-size:.92rem}
}
@media (max-width:600px){ .proof{flex-basis:78%} }