/* Passeggiata «Dal Foro al Colosseo, allora e oggi» - Imperivm Art · Roma
   Un solo foglio di stile. Senza JavaScript (classe no-js) la pagina e' un articolo in colonna;
   con JavaScript (classe js) le schede scorrono sopra il palco fisso delle immagini. */

@font-face { font-family: "Cinzel"; font-style: normal; font-weight: 400 700; font-display: swap;
  src: url(fonts/cinzel-latin-400-700.woff2) format("woff2"); }
@font-face { font-family: "EB Garamond"; font-style: normal; font-weight: 400; font-display: swap;
  src: url(fonts/eb-garamond-latin-400.woff2) format("woff2"); }
@font-face { font-family: "EB Garamond"; font-style: italic; font-weight: 400; font-display: swap;
  src: url(fonts/eb-garamond-latin-italic-400.woff2) format("woff2"); }
/* riserve tarate sulle misure dei caratteri (larghezza media e altezze, calcolate con fontTools): meno salti del testo */
@font-face { font-family: "EBG riserva"; src: local("Georgia"); size-adjust: 85.9%; ascent-override: 117.2%; descent-override: 34.7%; line-gap-override: 0%; }
@font-face { font-family: "Cinzel riserva"; src: local("Georgia"); size-adjust: 101.8%; ascent-override: 95.8%; descent-override: 36.5%; line-gap-override: 0%; }

:root {
  --bg: #0E0B0F; --surface: #1A151E; --gold: #C9A84C; --gold-lt: #EDD080; --gold-dk: #8A722C;
  --text: #F2E8D5; --text-2: #C8B89A; --text-3: #9A8663; --carta: #F2E8D5; --inchiostro: #1A151E;
  --line: rgba(201, 168, 76, .2); --line-2: rgba(201, 168, 76, .42);
  --serif: "EB Garamond", "EBG riserva", Georgia, "Times New Roman", serif;
  --caps: "Cinzel", "Cinzel riserva", Georgia, serif;
  --nebbia-colore: 214, 206, 192;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --barra: 52px;
  --sicuro-alto: env(safe-area-inset-top, 0px);
  --sicuro-basso: env(safe-area-inset-bottom, 0px);
  --sicuro-sx: max(16px, env(safe-area-inset-left, 0px));
  --sicuro-dx: max(16px, env(safe-area-inset-right, 0px));
  --B: calc(62px + var(--sicuro-basso));
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; background: var(--bg); }
body { background: var(--bg); color: var(--text); font: 400 1.125rem/1.6 var(--serif); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: var(--gold-lt); text-underline-offset: .18em; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--gold-lt); outline-offset: 3px; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, h4 { font-weight: 400; }
strong { font-weight: 700; }
cite { font-style: normal; }
.sr, .js .scena .fig, .js .scena .coppia, .js .copertina figcaption {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
.js .scena .fig picture, .js .scena .coppia picture { display: none; }

.salta { position: absolute; left: -9999px; top: 0; z-index: 60; min-height: 44px; display: inline-flex; align-items: center; }
.salta:focus { left: 12px; top: calc(var(--sicuro-alto) + 8px); background: var(--bg); color: var(--gold-lt); padding: .7rem 1rem; border: 1px solid var(--gold); }

/* ------------------------------------------------------------ barra in alto */
.barra { position: relative; z-index: 30; display: flex; align-items: center; justify-content: space-between; gap: .5rem;
  padding: var(--sicuro-alto) var(--sicuro-dx) 0 var(--sicuro-sx); min-height: calc(var(--barra) + var(--sicuro-alto)); background: var(--bg); border-bottom: 1px solid var(--line); }
.js .barra { position: fixed; top: 0; left: 0; right: 0; padding-bottom: 24px; background: linear-gradient(rgba(14, 11, 15, .94), rgba(14, 11, 15, .84) 64%, rgba(14, 11, 15, 0)); border-bottom: 0; }
.js.barra-piena .barra { background: rgba(14, 11, 15, .97); box-shadow: 0 1px 0 var(--line); }
.barra__firma { font-family: var(--caps); font-size: .78rem; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); text-decoration: none;
  min-height: 44px; display: flex; align-items: center; white-space: nowrap; }
.barra__azioni { display: flex; gap: .4rem; align-items: center; }
.barra__btn { min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; padding: 0 .65rem;
  font-family: var(--caps); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold-lt); text-decoration: none;
  background: rgba(14, 11, 15, .6); border: 1px solid var(--line-2); border-radius: 2px; }
.barra__btn[aria-pressed="true"] { background: var(--gold); color: var(--bg); border-color: var(--gold); }
.barra__btn[hidden] { display: none; }
.no-js #btn-capitoli { display: none; }
.barra__linea { display: none; }
.js .barra__linea { display: block; position: absolute; left: var(--sicuro-sx); right: var(--sicuro-dx); top: calc(var(--sicuro-alto) + var(--barra) - 2px); height: 22px; pointer-events: none; }
.linea-bar { position: absolute; left: 0; right: 0; top: 4px; height: 1px; background: rgba(201, 168, 76, .35); }
.linea-pt { position: absolute; top: 1px; width: 7px; height: 7px; margin-left: -3.5px; border-radius: 50%; background: var(--bg); border: 1px solid var(--gold); transition: background .3s, transform .3s; }
.linea-pt.on { background: var(--gold-lt); transform: scale(1.35); }
.linea-lab { position: absolute; top: 9px; font-family: var(--caps); font-size: .75rem; letter-spacing: .08em; color: var(--gold-lt); white-space: nowrap; transform: translateX(var(--sposta, -50%));
  text-shadow: 0 1px 3px #000; transition: opacity .3s; }
.barra__btn { white-space: nowrap; }
@media (max-width: 700px) { .barra__firma { font-size: .7rem; letter-spacing: .14em; } .barra__btn { padding: 0 .5rem; } }
@media (max-width: 400px) { .barra__firma { font-size: .66rem; letter-spacing: .1em; } .barra__btn { padding: 0 .42rem; letter-spacing: .08em; } .barra__azioni { gap: .3rem; } }

/* ------------------------------------------------------------ etichetta IA e sovrimpressioni del palco */
.etichetta-ia { display: none; }
.js .etichetta-ia { display: block; position: fixed; z-index: 26; left: 50%; top: calc(var(--sicuro-alto) + var(--barra) + 24px); transform: translate(-50%, -4px);
  max-width: calc(100% - 32px); padding: .42rem .8rem; font: 600 .8rem/1.25 var(--sans); letter-spacing: .01em; color: var(--text); text-align: center;
  background: rgba(14, 11, 15, .9); border: 1px solid var(--gold); border-radius: 2px; opacity: 0; transition: opacity .2s, transform .2s; pointer-events: none; }
.js .etichetta-ia.on { opacity: 1; transform: translate(-50%, 0); transition: none; }

.palco { position: fixed; left: 0; top: 0; width: 100%; height: 100vh; height: 100lvh; z-index: 1; overflow: hidden; pointer-events: none; contain: strict; }
.inq { position: absolute; left: 0; top: 0; width: 100%; height: 100%; opacity: 0; }
.inq[hidden] { display: none; }
.mov { position: absolute; left: 0; top: 0; transform-origin: 0 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.mov img, .mov .piano { position: absolute; left: 0; top: 0; width: 100%; height: 100%; max-width: none; background-size: 100% 100%; -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; }
.mov svg { position: absolute; left: 0; top: 0; width: 100%; height: 100%; overflow: visible; }
.riga { fill: rgba(237, 208, 128, .22); stroke: var(--gold-lt); stroke-width: 2.5px; vector-effect: non-scaling-stroke; opacity: 0; }
.inq canvas { position: absolute; left: 0; top: 0; width: 100%; height: 100%; }
.inq--stampa .mov { box-shadow: 0 18px 50px rgba(0, 0, 0, .7); outline: 10px solid #EFE6D2; }
.inq--velo { background: var(--bg); }
.palco__velo { position: absolute; inset: 0; background: var(--bg); opacity: 0; }
/* nebbia leggera dei passaggi fra due foto (M14): colore caldo e grana disegnata al computer, mai nero */
.passaggio { position: absolute; inset: 0; overflow: hidden; opacity: 0; background: rgb(var(--nebbia-colore)); }
.passaggio__grana { position: absolute; left: -512px; top: -512px; right: -512px; bottom: -512px; background: var(--nebbia) repeat; background-size: 512px 512px; opacity: .9; }
/* M2: la nebbia si alza sul Foro, prima davanti (in basso) e poi in fondo */
.inq--alza { opacity: 1; overflow: hidden; }
/* nella nebbia si intravede gia' la citta' (M2, 17/10) */
.alza { position: absolute; left: 0; top: 0; width: 100%; height: 215%; opacity: .86; }
/* foto di oggi abbassata dietro la colonna dell'antico al computer (Arco di Costantino) */
.inq__scuro { position: absolute; inset: 0; background: #0E0B0F; pointer-events: none; }
.alza__velo, .alza__grana { position: absolute; inset: 0; }
.alza__velo { background: linear-gradient(180deg, rgb(var(--nebbia-colore)) 0, rgb(var(--nebbia-colore)) 42%, rgba(var(--nebbia-colore), .7) 52%, rgba(var(--nebbia-colore), .25) 64%, rgba(var(--nebbia-colore), 0) 78%); }
.alza__grana { background: var(--nebbia) repeat; background-size: 420px 420px; opacity: .85;
  -webkit-mask-image: linear-gradient(180deg, #000 0, #000 50%, transparent 82%); mask-image: linear-gradient(180deg, #000 0, #000 50%, transparent 82%); }
.mov img.resto { background: none; }
.inq--colonna { box-shadow: 0 0 0 1px var(--gold), 0 24px 70px rgba(0, 0, 0, .65); }
.inq--porta { opacity: 1; }
.porta__anello { position: absolute; border: 2px solid var(--gold-lt); border-radius: 50%; pointer-events: none; box-shadow: 0 0 0 6px rgba(237, 208, 128, .14); }
/* cerchio «Com'è oggi» comandato dallo scorrimento (19/10): la foto di oggi dentro un cerchio con il bordo dorato */
.inq--cerchio { opacity: 1; }
.cerchio__anello { position: absolute; left: 0; top: 0; border: 2px solid var(--gold-lt); border-radius: 50%; pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(14, 11, 15, .35), inset 0 0 28px rgba(14, 11, 15, .35); opacity: 0; }
.cerchio-lab { position: fixed; z-index: 26; left: 50%; top: calc(var(--sicuro-alto) + var(--barra) + 76px); transform: translateX(-50%);
  width: max-content; max-width: calc(100% - 32px); margin: 0; padding: .4rem .75rem; font: 600 .8rem/1.3 var(--sans); text-align: center;
  color: var(--bg); background: var(--gold-lt); border-radius: 2px; opacity: 0; transition: opacity .25s; pointer-events: none; }
.cerchio-lab.on { opacity: 1; }
.js .etichetta-ia:not(.on) ~ .cerchio-lab { top: calc(var(--sicuro-alto) + var(--barra) + 24px); }
.palco__ombra { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(14, 11, 15, .45) 0, rgba(14, 11, 15, 0) 18%, rgba(14, 11, 15, 0) 58%, rgba(14, 11, 15, .55) 100%); }

.credito-palco { position: fixed; z-index: 24; left: 0; right: 0; bottom: 0; min-height: var(--B); display: flex; align-items: flex-end;
  padding: 14px var(--sicuro-dx) calc(var(--sicuro-basso) + 9px) var(--sicuro-sx);
  font: 400 .75rem/1.3 var(--sans); color: rgba(242, 232, 213, .92); text-decoration: none; text-shadow: 0 1px 3px rgba(0, 0, 0, .9);
  background: linear-gradient(180deg, rgba(14, 11, 15, 0), rgba(14, 11, 15, .82) 42%, rgba(14, 11, 15, .92)); }
.credito-palco:empty { display: none; }
.luogo-palco { position: fixed; z-index: 24; left: var(--sicuro-sx); top: calc(var(--sicuro-alto) + var(--barra) + 64px); max-width: 72%;
  padding: .32rem .6rem .3rem .55rem; border-left: 2px solid var(--gold); background: rgba(14, 11, 15, .62);
  font: 400 .8rem/1.35 var(--caps); letter-spacing: .2em; text-transform: uppercase; color: var(--gold-lt); text-shadow: 0 1px 3px #000; opacity: 0; transition: opacity .5s; pointer-events: none; }
.luogo-palco.on { opacity: 1; }
.js .etichetta-ia.on ~ .luogo-palco { top: calc(var(--sicuro-alto) + var(--barra) + 104px); }
.avanzamento { position: fixed; z-index: 24; right: 3px; top: calc(var(--sicuro-alto) + var(--barra) + 30px); bottom: calc(var(--sicuro-basso) + 54px); width: 2px; background: rgba(201, 168, 76, .2); pointer-events: none; }
.avanzamento i { position: absolute; left: 0; top: 0; width: 100%; height: 100%; background: var(--gold); transform-origin: 0 0; transform: scaleY(0); }

/* ------------------------------------------------------------ copertina */
.copertina { position: relative; }
.copertina__foto { width: 100%; background-size: cover; background-position: center; }
.no-js .copertina__foto { max-height: 82vh; object-fit: cover; }
.js .copertina__foto { position: fixed; left: 0; top: 0; width: 100%; height: 100vh; height: 100lvh; max-width: none; object-fit: cover; z-index: 0; transform-origin: 50% 50%; }
.scheda--copertina { padding: 1.2rem var(--sicuro-dx) 1.4rem var(--sicuro-sx); }
.firma { font-family: var(--caps); font-size: .78rem; letter-spacing: .3em; text-transform: uppercase; color: var(--gold); }
.scheda--copertina h1 { font-family: var(--caps); font-size: clamp(1.75rem, 7.6vw, 3.1rem); line-height: 1.12; color: var(--gold-lt); margin: .45rem 0 .7rem; letter-spacing: .02em; }
.apertura__par { font-size: 1.06rem; line-height: 1.55; color: var(--text); max-width: 38rem; }
.scorri { display: none; }

/* ------------------------------------------------------------ versione senza JavaScript: articolo in colonna */
.no-js main { max-width: 46rem; margin: 0 auto; padding: 0 var(--sicuro-dx) 3rem var(--sicuro-sx); }
.no-js .passo { margin: 0 0 1rem; }
.no-js .passo--vuoto { display: none; }
.no-js .scheda { margin: .6rem 0; }
.no-js .capitolo { padding-top: 2.4rem; }
.no-js .fig { margin: 1.2rem 0; }
.no-js .fig img { width: 100%; }
.fig figcaption { font: .82rem/1.45 var(--sans); color: var(--text-2); margin-top: .4rem; }
.fig__cr { color: var(--text-2); display: inline-block; padding: 12px 0; margin: -12px 0; }
.fig__lab { font: 700 .74rem/1.3 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--gold-lt); margin-bottom: .35rem; }
.fig__lab--ia { color: var(--text); background: rgba(14, 11, 15, .9); border: 1px solid var(--gold); display: inline-block; padding: .25rem .5rem; }
.no-js .coppia { display: grid; gap: 1rem; grid-template-columns: 1fr; margin: 1.4rem 0; }
@media (min-width: 760px) { .no-js .coppia { grid-template-columns: 1fr 1fr; } }

/* ------------------------------------------------------------ passi e schede */
.js .passo { position: relative; height: calc(var(--h) * 100vh); height: calc(var(--h) * 100svh); display: flex; flex-direction: column; justify-content: flex-end;
  align-items: stretch; padding: 0 var(--sicuro-dx) 0 var(--sicuro-sx); pointer-events: none; }
.js .passo--copertina { justify-content: flex-end; }
.js .passo > .scheda { position: sticky; bottom: var(--B); z-index: 2; pointer-events: auto; }
.js .passo--vuoto { pointer-events: none; }
.scheda { font-size: 1.1875rem; line-height: 1.5; color: var(--text); }
.js .scheda { background: rgba(14, 11, 15, .9); border: 1px solid var(--line); padding: .95rem 1.1rem 1rem; border-radius: 2px; max-width: 34rem; }
.js .scheda--copertina { background: linear-gradient(180deg, rgba(14, 11, 15, 0), rgba(14, 11, 15, .72) 22%, rgba(14, 11, 15, .9)); border: 0; padding: 2.2rem 0 .4rem; max-width: 40rem; }
.js .scorri { display: flex; justify-content: center; padding-top: .9rem; font-family: var(--caps); font-size: .78rem; letter-spacing: .3em; text-transform: uppercase; color: var(--gold-lt);
  opacity: 0; animation: compare .6s .7s forwards; }
.js .scorri span::after { content: ""; display: block; width: 1px; height: 26px; margin: .4rem auto 0; background: linear-gradient(var(--gold-lt), rgba(237, 208, 128, 0)); }
.js.scorso .scorri { opacity: 0 !important; transition: opacity .3s; animation: none; }
@keyframes compare { to { opacity: 1; } }
.sopra { display: block; font: 400 .78rem/1.4 var(--caps); letter-spacing: .2em; text-transform: uppercase; color: var(--gold); margin-bottom: .35rem; }
.scheda--promessa { font-style: italic; color: var(--gold-lt); }
.dato { display: block; font: .86rem/1.45 var(--sans); color: var(--text-2); margin-bottom: .55rem; padding-bottom: .55rem; border-bottom: 1px solid var(--line); }
.dato strong { font: 400 1.18rem/1.2 var(--serif); color: var(--gold-lt); }
.dato .fonte { font-size: .78rem; }
.scheda--dato .dato { margin: 0; padding: 0; border: 0; font-size: .95rem; color: var(--text); }
.scheda--dato .dato strong { font-size: 1.45rem; display: block; margin-bottom: .15rem; }
.scheda__nota { display: block; font: .8rem/1.4 var(--sans); color: var(--text-2); }
.scheda--dato .scheda__nota--dato { margin-top: .55rem; padding-top: .5rem; border-top: 1px solid var(--line); font-size: .85rem; }
/* apertura (M3): una frase alla volta al centro dello schermo, grande, senza riquadro */
.js [data-scena="apertura"] .passo > .scheda:not(.scheda--copertina):not(.scheda--pulsante) {
  bottom: 36svh; align-self: center; width: min(100%, 31rem); max-width: none; text-align: center; border: 0;
  padding: 2.6rem 2.5rem; font-size: 1.36rem; line-height: 1.38; text-shadow: 0 1px 3px rgba(0, 0, 0, .85);
  background: radial-gradient(closest-side, rgba(14, 11, 15, .9), rgba(14, 11, 15, .84) 52%, rgba(14, 11, 15, .5) 80%, rgba(14, 11, 15, 0)); }
.js [data-scena="apertura"] .passo > .scheda .sopra { font-size: .78rem; margin-bottom: .6rem; color: var(--gold-lt); }
/* m5 (20/10): la promessa dell'apertura in bianco come le altre frasi (l'oro sul travertino chiaro si leggeva male) */
.js [data-scena="apertura"] .passo > .scheda--promessa { color: #FFF8EA; text-shadow: 0 1px 4px rgba(0, 0, 0, .95), 0 0 14px rgba(0, 0, 0, .6); }
.scheda--pulsante { text-align: center; }
.js .scheda--pulsante { background: none; border: 0; }
.scheda--cartello { text-align: center; }
.js .scheda--cartello { background: none; border: 0; align-self: center; text-shadow: 0 2px 14px rgba(0, 0, 0, .9), 0 0 2px rgba(0, 0, 0, .8); padding-bottom: 6vh; }
.scheda--cartello h2 { font-family: var(--caps); font-size: clamp(2rem, 9vw, 3.6rem); line-height: 1.08; color: var(--gold-lt); letter-spacing: .03em; }
.cartello__num { display: block; font-size: .36em; letter-spacing: .32em; color: var(--gold); margin-bottom: .5rem; }
.cartello__sotto { font-style: italic; font-size: 1.15rem; color: var(--text); margin-top: .5rem; }
.scheda--citazione { font-style: italic; }
.js .scheda--citazione { background: rgba(242, 232, 213, .95); color: var(--inchiostro); border-color: rgba(138, 114, 44, .5); }
.scheda--citazione blockquote p { font-size: 1.2rem; line-height: 1.45; }
.cit__trad { font-size: 1.04rem; margin-top: .55rem; }
.cit__nota { font-size: .82rem; font-style: normal; opacity: .78; }
.scheda--citazione figcaption { font: .82rem/1.45 var(--sans); font-style: normal; margin-top: .55rem; }
.js .scheda--citazione a { color: #6E5410; }
.scheda--fatti { list-style: none; font-size: 1.06rem; line-height: 1.5; }
.scheda--fatti li + li { margin-top: .6rem; padding-top: .6rem; border-top: 1px solid var(--line); }
.scheda strong { font-weight: 400; color: var(--gold-lt); }
.scheda--fatti strong { font-size: 1.08em; }
.fonte { font: .8rem/1.4 var(--sans); color: var(--text-2); white-space: normal; }
.fonte a, .cit__trad a, .scheda--citazione figcaption a { display: inline-block; padding: 13px 0; margin: -13px 0; }
.scheda--nota { font: .85rem/1.45 var(--sans); color: var(--text-2); }
.js .passo > .scheda--nota { position: relative; z-index: 2; margin: 0 0 var(--B); }
.scheda--schema { margin: 1rem 0; font: .85rem/1.45 var(--sans); color: var(--text-2); }
.js .passo > .scheda--schema { align-self: center; width: min(100%, 26rem); padding: .6rem .7rem .7rem; margin: 0; }
.scheda--schema svg { display: block; width: 100%; height: auto; max-height: 34svh; }
.scheda--schema figcaption { margin-top: .35rem; }
.scheda--schema .m-percorso { stroke-dashoffset: 0; }
.scheda--schema .m-velia ellipse { fill: rgba(201, 168, 76, .34); stroke: var(--gold-lt); stroke-width: 3; }
.scheda--schema .m-colle { font-size: 22px; }
.scheda--schema .m-strade polyline:first-child { stroke: rgba(237, 208, 128, .7); }
.scheda--raccordo { font-style: italic; color: var(--gold-lt); }
.scheda--meta { text-align: center; font-family: var(--caps); }
.js .scheda--meta { background: rgba(14, 11, 15, .7); align-self: center; padding: .4rem 1rem; }
.meta__num { display: block; font-size: .8rem; letter-spacing: .3em; color: var(--gold); }
.scheda--meta a { display: inline-flex; align-items: center; min-height: 44px; font-size: 1.3rem; letter-spacing: .06em; text-decoration: none; }
.scheda--meta a::after { content: " \2193"; font-family: var(--serif); margin-left: .4rem; }
.scheda--chiusura { text-align: center; font-family: var(--caps); font-size: clamp(1.3rem, 6vw, 2.2rem); letter-spacing: .26em; text-transform: uppercase; color: var(--gold-lt); }
.js .scheda--chiusura { text-shadow: 0 2px 16px rgba(0, 0, 0, .95), 0 0 2px #000; }
.js .scheda--chiusura { background: none; border: 0; align-self: center; }
/* voce IA accesa (20/10, v6.5): le schede si fermano sopra la fascia dei sottotitoli (voce-on). Mentre la voce parla
   (voce-parla) le frasi che dice stanno solo nella fascia e non si ripetono nelle schede; tutto il resto (dati con la
   fonte, citazioni, cartelli, frasi non lette dalla voce, pulsanti) resta. Quando la voce tace le frasi tornano nelle schede. */
.js.voce-parla .scheda--narrata { visibility: hidden; }
.js.voce-parla .scheda .narra { display: none; }
.js.voce-on .passo > .scheda { bottom: calc(var(--B) + var(--S, 0px) + 10px); }
.js.voce-on [data-scena="apertura"] .passo > .scheda:not(.scheda--copertina):not(.scheda--pulsante) { bottom: max(36svh, calc(var(--B) + var(--S, 0px) + 10px)); }
.js.voce-on .passo > .scheda--nota { margin-bottom: calc(var(--B) + var(--S, 0px) + 10px); }
.js.voce-on .mappa .mappa__svg { max-height: calc(58svh - var(--S, 0px)); }
.js.voce-on .avanzamento { bottom: calc(var(--B) + var(--S, 0px) + 6px); }

@media (min-width: 900px) and (orientation: landscape) {
  .js .passo { align-items: flex-start; padding-left: clamp(28px, 5vw, 80px); }
  .js .scheda { max-width: 30rem; }
  .js .scheda--cartello, .js .scheda--meta, .js .scheda--chiusura, .js .scheda--pulsante { align-self: center; max-width: 46rem; }
  .js .scheda--copertina { max-width: 38rem; }
}
@media (orientation: landscape) and (max-height: 500px) {
  :root { --barra: 44px; --B: calc(40px + var(--sicuro-basso)); }
  .js .barra { padding-bottom: 8px; }
  .js .barra__linea { display: none; }
  .barra__btn { min-height: 44px; }
  .js .etichetta-ia { top: calc(var(--sicuro-alto) + var(--barra) + 4px); font-size: .75rem; padding: .3rem .6rem; }
  .luogo-palco { top: calc(var(--sicuro-alto) + var(--barra) + 8px); }
  .cerchio-lab { top: calc(var(--sicuro-alto) + var(--barra) + 40px); font-size: .75rem; padding: .3rem .6rem; }
  .js .etichetta-ia:not(.on) ~ .cerchio-lab { top: calc(var(--sicuro-alto) + var(--barra) + 4px); }
  .js .scheda--cartello { padding-bottom: 2vh; }
  .scheda { font-size: 1rem; }
  .js .scheda { max-width: min(30rem, 58vw); padding: .6rem .8rem; }
  .js .passo { align-items: flex-start; }
  .scheda--cartello h2 { font-size: 1.9rem; }
  .scheda--copertina h1 { font-size: 1.5rem; }
  .apertura__par { font-size: .95rem; }
}

/* ------------------------------------------------------------ mappa e linea del tempo */
.mappa { margin: 1.4rem 0; }
.js .passo--mappa { justify-content: flex-start; padding-top: calc(var(--sicuro-alto) + var(--barra) + 30px); }
.js .mappa { position: sticky; z-index: 2; top: calc(var(--sicuro-alto) + var(--barra) + 30px); margin: 0 auto; width: min(100%, 62rem); pointer-events: auto;
  transform-origin: 100% 0; will-change: transform, opacity; }
.mappa__titolo { font-family: var(--caps); font-size: 1.5rem; color: var(--gold-lt); letter-spacing: .06em; }
.mappa__intro { font-size: 1.02rem; color: var(--text); margin: .3rem 0 .6rem; max-width: 40rem; }
.mappa__svg { width: 100%; height: auto; max-height: 58svh; display: block; }
.mappa__svg--tel { display: none; }
@media (orientation: portrait) and (max-width: 640px) { .mappa .mappa__svg--pc, .scheda--schema .mappa__svg--pc { display: none; } .mappa .mappa__svg--tel, .scheda--schema .mappa__svg--tel { display: block; max-height: 62svh; } }
.mappa figcaption { font: .8rem/1.4 var(--sans); color: var(--text-2); margin-top: .35rem; }
.m-percorso-fondo { fill: none; stroke: rgba(201, 168, 76, .22); stroke-width: 9; stroke-linejoin: round; stroke-linecap: round; }
.m-percorso { fill: none; stroke: var(--gold-lt); stroke-width: 7; stroke-linejoin: round; stroke-linecap: round; stroke-dasharray: 1000; stroke-dashoffset: 0; }
.js .m-percorso { stroke-dashoffset: 1000; }
.m-strade polyline { fill: none; stroke: rgba(242, 232, 213, .2); stroke-width: 16; stroke-linecap: round; stroke-linejoin: round; }
.m-strade .m-sacra { stroke-width: 6; stroke-dasharray: 2 10; stroke: rgba(242, 232, 213, .35); }
.mp circle { fill: var(--bg); stroke: var(--gold); stroke-width: 3.5; }
.mp text { font: 700 17px var(--caps); fill: var(--gold-lt); text-anchor: middle; }
.mp.visto circle { fill: var(--gold-dk); }
.mp.qui circle { fill: var(--gold-lt); stroke: #fff; }
.mp.qui text { fill: var(--bg); }
.m-negozio circle { fill: var(--gold); stroke: #fff; stroke-width: 2.5; }
.m-negozio .m-negozio__in { fill: var(--bg); stroke: none; }
.m-negozio .m-negozio__nome { font: 400 17px var(--sans); fill: var(--text); }
.m-colosseo ellipse { fill: rgba(242, 232, 213, .07); stroke: rgba(242, 232, 213, .5); stroke-width: 2; }
.m-colosseo text, .m-via, .m-colle { font: 17px var(--sans); fill: var(--text-2); }
.m-colosseo text { text-anchor: middle; font-size: 19px; }
.m-via { font-style: italic; fill: rgba(242, 232, 213, .62); }
.m-colle { fill: var(--gold-lt); font-size: 16px; }
.m-velia ellipse { fill: rgba(138, 114, 44, .16); stroke: rgba(201, 168, 76, .55); stroke-width: 2; stroke-dasharray: 8 6; }
.m-velia line { stroke: rgba(237, 208, 128, .5); stroke-width: 1.5; }
.m-scala line { stroke: var(--text-2); stroke-width: 2; }
.m-scala text, .m-nord text { font: 15px var(--sans); fill: var(--text-2); text-anchor: middle; }
.m-nord path { fill: var(--text-2); }
.linea { position: relative; z-index: 3; max-width: 46rem; margin: 1rem auto; padding: 1rem var(--sicuro-dx) 1.2rem var(--sicuro-sx); background: var(--bg); }
.js .linea { border: 1px solid var(--line); background: rgba(14, 11, 15, .94); margin: 0 auto 30vh; width: calc(100% - 32px); }
.linea h3 { font-family: var(--caps); font-size: .9rem; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); margin-bottom: .5rem; }
.linea ol { list-style: none; }
.linea li { padding: .45rem 0; border-top: 1px solid var(--line); font-size: 1rem; }
.linea__q { font-family: var(--caps); color: var(--gold-lt); margin-right: .35rem; }

/* ------------------------------------------------------------ fonti, approfondimenti, negozio, crediti */
.fonti, .approfondisci { position: relative; z-index: 3; max-width: 46rem; margin: 1rem auto; }
.js .fonti, .js .approfondisci { width: calc(100% - 32px); background: rgba(14, 11, 15, .94); border: 1px solid var(--line-2); }
.js .fonti { margin-top: 0; }
.fonti summary { min-height: 44px; display: flex; align-items: center; padding: 0 1rem; cursor: pointer; font-family: var(--caps); font-size: .76rem; letter-spacing: .16em; text-transform: uppercase; color: var(--gold); list-style: none; }
.fonti summary::-webkit-details-marker { display: none; }
.fonti summary::before { content: "+"; margin-right: .6rem; font-family: var(--serif); font-size: 1.2rem; }
.fonti[open] summary::before { content: "\2212"; }
.fonti ol { padding: 0 1rem 1rem 2.2rem; font: .9rem/1.45 var(--sans); color: var(--text-2); }
.fonti__t { padding: .2rem 1rem .3rem; font-family: var(--caps); font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); }
.fonti__fatti { list-style: none; padding: 0 1rem .8rem; font-size: 1rem; line-height: 1.45; }
.fonti__fatti li + li { margin-top: .5rem; padding-top: .5rem; border-top: 1px solid var(--line); }
.fonti__fatti strong { font-weight: 400; color: var(--gold-lt); }
.fonti li { margin: .2rem 0; }
.fonti li a { display: inline-block; padding: 10px 0; }
.approfondisci { padding: .4rem 1rem; font-size: 1rem; }
.approfondisci a { display: inline-block; padding: 11px 0; }
.approfondisci span { font-family: var(--caps); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); }
.js .capitolo > .approfondisci:last-child, .js .capitolo > .fonti:last-child { margin-bottom: 14vh; }
.js [data-scena="epilogo"] > .approfondisci:last-child, .js [data-scena="epilogo"] > .fonti:last-child { margin-bottom: 10vh; }
.negozio { position: relative; z-index: 3; max-width: 40rem; margin: 1.4rem auto; padding: 1.4rem 1.2rem; background: var(--surface); border: 1px solid var(--gold); }
.js .passo--negozio { height: auto; display: block; pointer-events: auto; padding-top: 10vh; padding-bottom: calc(var(--B) + 8vh); }
.negozio h3 { font-family: var(--caps); font-size: 1.35rem; color: var(--gold-lt); margin-bottom: .6rem; }
.negozio address { font-style: normal; font-size: 1.2rem; line-height: 1.45; margin-bottom: .5rem; }
.negozio p { margin: .35rem 0; }
.btn-riga { display: flex; flex-wrap: wrap; gap: .6rem; margin: 1rem 0 !important; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .7rem 1.3rem; font-family: var(--caps); font-size: .78rem; letter-spacing: .16em;
  text-transform: uppercase; text-decoration: none; color: var(--gold-lt); background: rgba(14, 11, 15, .6); border: 1px solid var(--line-2); border-radius: 2px; }
.btn--oro { background: var(--gold); color: var(--bg); border-color: var(--gold); font-weight: 700; }
.negozio__link { margin-top: 1rem; border-top: 1px solid var(--line); padding-top: .8rem; }
.negozio__link-t { font-family: var(--caps); font-size: .78rem; letter-spacing: .16em; text-transform: uppercase; color: var(--gold); }
.negozio__link ul { list-style: none; }
.negozio__link a { display: inline-block; padding: 11px 0; }
.negozio__cr { font: .8rem/1.4 var(--sans); color: var(--text-3); }
.crediti { position: relative; z-index: 3; background: var(--bg); max-width: 46rem; margin: 0 auto; padding: 3rem var(--sicuro-dx) 3rem var(--sicuro-sx); font: .95rem/1.55 var(--sans); color: var(--text-2); }
.js .crediti { max-width: none; padding-left: max(var(--sicuro-sx), calc((100% - 46rem) / 2)); padding-right: max(var(--sicuro-dx), calc((100% - 46rem) / 2)); border-top: 1px solid var(--line-2); }
.crediti h2 { font-family: var(--caps); font-size: 1.7rem; color: var(--gold-lt); margin-bottom: 1rem; }
.crediti h3 { font-family: var(--caps); font-size: 1rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); margin: 2rem 0 .6rem; }
.crediti h4 { font: 700 .82rem/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--text); margin: 1.1rem 0 .3rem; }
.crediti p { margin: .5rem 0; }
.crediti ul { list-style: none; }
.crediti li { padding: .45rem 0; border-top: 1px solid var(--line); }
.crediti li a { display: inline-block; padding: 10px 0; margin: -10px 0; }
.cr__mod { font-size: .84rem; color: var(--text-3); }
.firma--fine { text-align: center; margin-top: 3rem; font-size: .9rem; }
.piede { position: relative; z-index: 3; background: var(--bg); border-top: 1px solid var(--line); padding: 1.2rem var(--sicuro-dx) calc(1.6rem + var(--sicuro-basso)) var(--sicuro-sx); font: .85rem/1.5 var(--sans); color: var(--text-3); text-align: center; }
.piede a { display: inline-block; padding: 11px 2px; }
.piede__uso { max-width: 40rem; margin: 0 auto 1rem; text-align: left; }
.piede__uso summary { min-height: 44px; display: flex; align-items: center; justify-content: center; cursor: pointer; font-family: var(--caps); letter-spacing: .14em; text-transform: uppercase; color: var(--gold); }
.piede__uso ul { padding-left: 1.2rem; }

/* ------------------------------------------------------------ comandi sopra il palco: voce, avvisi */
/* fascia dei sottotitoli (20/10, v6.5): larga quanto lo schermo, appena sopra la riga dei crediti, alta quanto il
   sottotitolo piu' lungo della pagina (--S, misurata dal programma): non cambia altezza da una frase all'altra */
.sottotitolo { position: fixed; z-index: 28; left: 0; right: 0; bottom: var(--B); height: var(--S, auto); margin: 0; display: none; align-items: center; justify-content: center;
  padding: .55rem var(--sicuro-dx) .6rem var(--sicuro-sx); background: rgba(14, 11, 15, .95); border-top: 1px solid var(--gold);
  font-size: 1.06rem; line-height: 1.42; color: var(--text); text-align: center; pointer-events: none; }
.sottotitolo__t { display: block; width: 100%; max-width: 34rem; }
.sottotitolo.on { display: flex; }
@media (min-width: 700px) { .sottotitolo { font-size: 1.15rem; line-height: 1.45; } }
/* telefono in orizzontale: le schede a sinistra, i sottotitoli in un riquadro a destra (in altezza non c'e' posto per tutti e due) */
@media (orientation: landscape) and (max-height: 500px) {
  .sottotitolo { left: calc(var(--sicuro-sx) + min(30rem, 58vw) + 12px); right: var(--sicuro-dx); padding: .45rem .7rem; border: 1px solid var(--gold); font-size: .95rem; line-height: 1.38; }
  .js.voce-on .passo > .scheda { bottom: var(--B); align-self: flex-start; max-width: min(30rem, 58vw); }
  .js.voce-on [data-scena="apertura"] .passo > .scheda:not(.scheda--copertina):not(.scheda--pulsante) { bottom: calc(var(--B) + 8px); align-self: flex-start; width: min(100%, 58vw); }
  .js.voce-on .passo > .scheda--nota { margin-bottom: var(--B); max-width: min(30rem, 58vw); }
  .js.voce-on .mappa .mappa__svg { max-height: 58svh; }
  /* anche i blocchi che scorrono stanno nella colonna di sinistra, accanto ai sottotitoli */
  .js.voce-on .mappa, .js.voce-on .linea, .js.voce-on .fonti, .js.voce-on .approfondisci, .js.voce-on .negozio { width: min(100% - 32px, 58vw); margin-left: var(--sicuro-sx); margin-right: auto; }
  /* e il piede (21/10, prove del sito): girando il telefono a fine pagina il link «Via Cavour 280», centrato, finiva
     sotto il riquadro dei sottotitoli a destra */
  .js.voce-on .piede > * { max-width: min(30rem, 58vw); margin-left: 0; margin-right: auto; }
  .js.voce-on .avanzamento { bottom: calc(var(--sicuro-basso) + 54px); }
}
.avviso { position: fixed; z-index: 45; left: 50%; top: calc(var(--sicuro-alto) + var(--barra) + 64px); transform: translateX(-50%); width: min(24rem, calc(100% - 32px)); padding: .55rem .8rem;
  background: rgba(26, 21, 30, .96); border: 1px solid var(--gold); font: .8rem/1.4 var(--sans); color: var(--text); display: none; }
.avviso.on { display: block; }
.avviso button { margin-top: .4rem; min-height: 44px; }

/* ------------------------------------------------------------ scelta della lingua prima di entrare (20/10, v6.5)
   Solo con JavaScript (la aggiunge il programma). La finestra e' piena: dentro ha la stessa foto della copertina
   (messa dal programma), cosi' sotto non si vede niente e la pagina non va nascosta (il testo resta tutto, anche per Google). */
html.lingua-aperta { overflow: hidden; }
.lingua { position: fixed; z-index: 55; inset: 0; display: flex; align-items: flex-end; justify-content: center; overflow: hidden;
  padding: calc(var(--sicuro-alto) + 24px) var(--sicuro-dx) calc(var(--sicuro-basso) + 9vh) var(--sicuro-sx);
  background: linear-gradient(180deg, rgba(14, 11, 15, .5) 0, rgba(14, 11, 15, .35) 30%, rgba(14, 11, 15, .82) 62%, rgba(14, 11, 15, .95)), var(--bg);
  background-size: cover; background-position: 50% 50%; background-repeat: no-repeat;
  touch-action: none; overscroll-behavior: contain; animation: entra-lingua .3s both; }
@keyframes entra-lingua { from { opacity: 0; } }
.lingua.via { opacity: 0; transition: opacity .35s; pointer-events: none; }
.lingua__in { width: min(100%, 26rem); text-align: center; text-shadow: 0 1px 3px rgba(0, 0, 0, .85); }
.lingua__firma { margin-bottom: .8rem; }
.lingua__titolo { margin: 0 0 1.4rem; }
.lingua__titolo span { display: block; }
.lingua__titolo-primo { font-family: var(--caps); font-size: clamp(1.5rem, 6.6vw, 2.3rem); line-height: 1.15; color: var(--gold-lt); letter-spacing: .02em; }
.lingua__titolo-secondo { margin-top: .45rem; font-style: italic; font-size: 1.12rem; line-height: 1.35; color: var(--text); }
.lingua__chiedi { margin-bottom: .9rem; font-family: var(--caps); font-size: .8rem; letter-spacing: .2em; text-transform: uppercase; color: var(--gold-lt); }
.lingua__scelte { display: flex; flex-direction: column; gap: .75rem; }
.lingua__btn { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 68px; padding: .7rem 1.2rem;
  font-family: var(--caps); font-size: 1.3rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold-lt);
  background: rgba(14, 11, 15, .72); border: 1px solid var(--gold); border-radius: 2px; text-shadow: none; -webkit-tap-highlight-color: transparent; }
.lingua__btn--tel { background: var(--gold); color: var(--bg); font-weight: 700; box-shadow: 0 0 0 4px rgba(237, 208, 128, .22); }
.lingua__tel { display: block; margin-top: .2rem; font: 600 .74rem/1.2 var(--sans); letter-spacing: .04em; text-transform: none; }
.lingua__btn:focus-visible { outline: 2px solid var(--gold-lt); outline-offset: 4px; }
.lingua__btn:active { transform: translateY(1px); }
.lingua__nota { margin-top: 1rem; font: .85rem/1.45 var(--sans); color: var(--text-2); }
@media (min-width: 640px) { .lingua__scelte { flex-direction: row; } .lingua__btn { flex: 1 1 0; } .lingua__in { width: min(100%, 34rem); } }
@media (orientation: landscape) and (max-height: 500px) {
  .lingua { align-items: center; padding-bottom: calc(var(--sicuro-basso) + 12px); }
  .lingua__scelte { flex-direction: row; } .lingua__btn { flex: 1 1 0; min-height: 60px; }
  .lingua__in { width: min(100%, 34rem); }
  .lingua__titolo { margin-bottom: .8rem; } .lingua__titolo-primo { font-size: 1.45rem; } .lingua__titolo-secondo { font-size: 1rem; margin-top: .2rem; }
  .lingua__firma { margin-bottom: .4rem; } .lingua__chiedi { margin-bottom: .6rem; } .lingua__nota { margin-top: .6rem; }
}
@media (prefers-reduced-motion: reduce) { .lingua { animation: none; } .lingua.via { transition: none; } }

/* ------------------------------------------------------------ capitoli */
.capitoli { margin: auto; width: min(100% - 24px, 40rem); max-height: calc(100% - 24px); padding: 0; background: var(--bg); color: var(--text); border: 1px solid var(--gold); border-radius: 2px; }
.capitoli::backdrop { background: rgba(0, 0, 0, .72); }
.capitoli[open] { display: block; }
.capitoli__in { padding: 1rem 1rem 1.2rem; }
.capitoli__titolo { font-family: var(--caps); font-size: 1.1rem; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); }
.capitoli__mappa svg { width: 100%; height: auto; max-height: 34vh; }
.capitoli__mappa .m-percorso { stroke-dashoffset: 0; }
.capitoli__lista { list-style: none; margin: .6rem 0; }
.cap-voce { display: flex; align-items: center; gap: .7rem; min-height: 48px; padding: 0 .4rem; color: var(--text); text-decoration: none; border-top: 1px solid var(--line); font-size: 1.08rem; }
.cap-voce__n { font-family: var(--caps); color: var(--gold); min-width: 2.6rem; }
.cap-voce[aria-current] { color: var(--gold-lt); background: rgba(201, 168, 76, .12); }
.cap-voce[aria-current]::after { content: attr(data-qui); margin-left: auto; font: .78rem var(--sans); color: var(--gold-lt); }
.capitoli__azioni { display: flex; flex-wrap: wrap; gap: .6rem; justify-content: space-between; }
@media (min-width: 900px) and (orientation: landscape) {
  .capitoli { margin: 0 0 0 auto; height: 100%; max-height: 100%; width: 30rem; }
}

/* I7 (20/10): aggancio leggero e nativo sulle soste del cerchio, solo al telefono col dito (classe messa dal programma) */
html.aggancio { scroll-snap-type: y proximity; }
.punto-sosta { position: absolute; left: 0; width: 1px; height: 1px; scroll-snap-align: start; pointer-events: none; opacity: 0; }

@media (prefers-reduced-motion: reduce) {
  .js .scorri { animation: none; opacity: 1; }
}