/* =============================================================
   Progetto torri fibra ottica — /progetti/torri-fibra-ottica/
   Namespace .tor- (pagina rifatta da zero il 2026-09-19, CSS solo suo:
   non usa piu' .page-project-redesign di style.css).
   Stessa famiglia della pagina Ulisse (carta bianca, inchiostro blu
   notte, un accento blu, titoli centrati con la seconda riga grigia),
   racconto proprio:
   1 · apertura: le due torri dal piano terra + quattro fatti
   2 · la sfida: la torre su due piani, guidata dallo scroll
       (disegno in assets/js/torri-torre.js)
   3 · la soluzione: tutta la torre in una pagina (bento; la pagina di
       processo e' quella ridisegnata da tools/schermata-hmi/gen.py)
   4 · cosa abbiamo portato: quattro mestieri, ognuno col suo servizio
   5 · le foto: striscia che scorre di lato, ogni foto a tutto schermo
       (visore: assets/css/foto-visore.css + assets/js/foto-visore.js)
   6 · altri progetti della stessa filiera
   7 · il primo passo
   ============================================================= */

.page-tor {
  --tor-ink: #0b1220;
  --tor-copy: #56627a;
  --tor-gray: #7b889c;
  --tor-muted: #64748b;
  --tor-accent: #2563eb;
  --tor-accent-ink: #1d4ed8;
  --tor-accent-deep: #1e3a8a;
  --tor-mist: #f5f5f7;
  --tor-rule: rgba(15, 23, 42, 0.1);
  --tor-pad: clamp(96px, 11vw, 168px);
  --tor-nav: var(--nav-offset, var(--nav-height, 50px));
  --tor-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --tor-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* .page-home-corporate impone main{overflow:hidden}: con hidden lo sticky della sfida non aggancia */
body.page-tor main {
  overflow-x: clip;
  overflow-y: visible;
  padding-top: 0;
  background: #ffffff;
}

.tor-wrap {
  width: min(100% - 40px, var(--max-width, 1200px));
  margin-inline: auto;
}

.page-tor section[id] { scroll-margin-top: 72px; }

.page-tor :is(a, button, [tabindex]):focus-visible {
  outline: 3px solid var(--tor-accent);
  outline-offset: 4px;
  border-radius: 4px;
}

.tor-eyebrow {
  margin: 0;
  color: var(--tor-accent-deep);
  font-size: var(--fs-eyebrow);
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1.2;
  text-transform: uppercase;
}

.tor-head {
  max-width: 980px;
  margin-inline: auto;
  text-align: center;
}
.tor-title {
  margin: 0.42em 0 0;
  color: var(--tor-ink);
  font-size: clamp(2.4rem, 5.4vw, 4.7rem);
  font-weight: 790;
  letter-spacing: -0.048em;
  line-height: 1.02;
  text-wrap: balance;
}
.tor-title span {
  display: block;
  color: var(--tor-gray);
}
.tor-lead {
  margin: 28px auto 0;
  max-width: 52ch;
  color: var(--tor-copy);
  font-size: clamp(1.08rem, 1.4vw, 1.25rem);
  line-height: 1.55;
  text-wrap: balance;
}

.tor-link {
  color: var(--tor-accent);
  font-size: var(--fs-caption);
  font-weight: 640;
  text-decoration: none;
  white-space: nowrap;
}
.tor-link span { display: inline-block; transition: transform 0.25s ease; }
.tor-link:hover { color: var(--tor-accent-ink); }
.tor-link:hover span { transform: translateX(3px); }

/* comparse: solo se il JS e' vivo (html.reveal-ready, rete di sicurezza nel <head>) */
.reveal-ready .tor-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s var(--tor-ease), transform 0.8s var(--tor-ease);
}
.reveal-ready .tor-in.is-in {
  opacity: 1;
  transform: none;
}
.reveal-ready .tor-in--d1 { transition-delay: 0.08s; }
.reveal-ready .tor-in--d2 { transition-delay: 0.16s; }
.reveal-ready .tor-in--d3 { transition-delay: 0.24s; }

/* =============================================================
   1 · APERTURA — la foto dietro, il testo a sinistra
   Stesso impianto della Ulisse, tarato su questa foto: e' simmetrica
   (due torri), quindi parte piu' a destra e il velo si apre prima,
   cosi' la torre di sinistra si intravede e quella di destra e' piena.
   Il velo e' misurato sulla colonna del testo (--tor-left), non in %.
   Sotto i 900 px: testo su bianco, foto sotto da bordo a bordo.
   ============================================================= */
.tor-hero {
  --tor-left: max(20px, (100vw - var(--max-width, 1200px)) / 2);
  padding-bottom: clamp(40px, 5vw, 64px);
}
.tor-hero__stage {
  position: relative;
  isolation: isolate;
  display: grid;
  align-items: center;
  min-height: clamp(600px, calc(100vh - var(--tor-nav)), 820px);
  min-height: clamp(600px, calc(100svh - var(--tor-nav)), 820px);
  overflow: hidden;
  background: #ffffff;
}
.tor-hero__photo {
  position: absolute;
  inset: 0 0 0 calc(var(--tor-left) + 340px);
  z-index: -2;
  margin: 0;
  /* il bordo sinistro della foto non si deve vedere nemmeno sotto il velo */
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 120px);
  mask-image: linear-gradient(90deg, transparent 0, #000 120px);
}
.tor-hero__photo picture { display: contents; }
.tor-hero__photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 42%;
}
/* il velo: pieno sotto il testo, poi si apre sulla foto; in basso la foto si scioglie nella pagina */
.tor-hero__stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(0deg, #ffffff 0, rgba(255, 255, 255, 0) 88px),
    linear-gradient(
      90deg,
      #ffffff 0,
      #ffffff calc(var(--tor-left) + 360px),
      rgba(255, 255, 255, 0.96) calc(var(--tor-left) + 450px),
      rgba(255, 255, 255, 0.84) calc(var(--tor-left) + 530px),
      rgba(255, 255, 255, 0.5) calc(var(--tor-left) + 620px),
      rgba(255, 255, 255, 0.16) calc(var(--tor-left) + 710px),
      rgba(255, 255, 255, 0) calc(var(--tor-left) + 790px)
    );
  pointer-events: none;
}
.reveal-ready .tor-hero__photo img {
  animation: tor-photo 1.6s var(--tor-ease) 0.05s both;
}
@keyframes tor-photo {
  from { opacity: 0; transform: scale(1.035); }
  to { opacity: 1; transform: none; }
}
.reveal-ready .tor-hero__copy > * {
  animation: tor-rise 1s var(--tor-ease) both;
}
.reveal-ready .tor-hero__copy > :nth-child(2) { animation-delay: 0.06s; }
.reveal-ready .tor-hero__copy > :nth-child(3) { animation-delay: 0.14s; }
.reveal-ready .tor-hero__copy > :nth-child(4) { animation-delay: 0.22s; }
@keyframes tor-rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}

.tor-hero__inner { padding-block: clamp(56px, 7vw, 96px); }
.tor-hero__copy {
  max-width: 520px;
  text-align: left;
}
.tor-hero h1 {
  margin: 0.4em 0 0;
  color: var(--tor-ink);
  font-size: clamp(2.4rem, 3.95vw, 3.6rem);
  font-weight: 790;
  letter-spacing: -0.048em;
  line-height: 1.01;
  text-wrap: balance;
  /* alone bianco: dove il titolo sfiora la foto resta staccato */
  text-shadow: 0 0 28px rgba(255, 255, 255, 0.95), 0 0 6px rgba(255, 255, 255, 0.7);
}
.tor-hero h1 span {
  display: block;
  /* piu' scuro del grigio dei titoli di sezione: qui sotto c'e' una foto */
  color: #5d6a82;
}
.tor-hero__lead {
  margin: 26px 0 0;
  max-width: 40ch;
  color: #414d63;
  font-size: clamp(1.08rem, 1.35vw, 1.24rem);
  line-height: 1.55;
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.95);
}
.tor-hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 12px;
  margin-top: 34px;
}
.tor-hero__actions .button--secondary { background: #ffffff; }

/* la didascalia della foto: targhetta in basso a destra, sopra la foto */
.tor-hero__photo figcaption {
  position: absolute;
  right: clamp(16px, 2.4vw, 36px);
  bottom: clamp(16px, 2.2vw, 30px);
  z-index: 1;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--tor-ink);
  font: 500 0.72rem/1.3 var(--tor-mono);
  letter-spacing: 0.04em;
}
/* quattro fatti, in riga */
.tor-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0 clamp(16px, 2vw, 32px);
  margin: clamp(40px, 5vw, 64px) auto 0;
  text-align: left;
}
.tor-facts > div {
  padding-top: 18px;
  border-top: 1px solid var(--tor-rule);
}
.tor-facts dt {
  color: var(--tor-muted);
  font: 500 0.72rem/1.3 var(--tor-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.tor-facts dd {
  margin: 8px 0 0;
  color: var(--tor-ink);
  font-size: clamp(1.05rem, 1.35vw, 1.22rem);
  font-weight: 650;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

/* =============================================================
   2 · LA SFIDA — la torre su due piani
   Il disegno e' verticale (4:5): tre colonne, passaggi · torre · numeri.
   Senza JS / riduci movimento: disegno fermo e tre passaggi in fila.
   Con JS (.is-live): pista alta, palco agganciato, i passaggi si
   danno il cambio nello stesso punto.
   ============================================================= */
.tor-sfida {
  padding-block: clamp(72px, 9vw, 128px) var(--tor-pad);
}
.tor-sfida__track { padding-top: clamp(40px, 5vw, 72px); }
.tor-sfida__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1fr);
  gap: clamp(32px, 4vw, 64px);
  align-items: center;
}

.tor-sfida__steps {
  margin: 0;
  padding: 0;
  list-style: none;
}
.tor-sfida__step {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 0 12px;
  padding-block: 18px;
  border-top: 1px solid var(--tor-rule);
}
.tor-sfida__n {
  padding-top: 6px;
  color: var(--tor-accent);
  font: 700 0.84rem/1 var(--tor-mono);
}
.tor-sfida__step p {
  margin: 0;
  color: var(--tor-copy);
  font-size: clamp(1.08rem, 1.45vw, 1.32rem);
  line-height: 1.45;
  letter-spacing: -0.01em;
}
.tor-sfida__step b {
  color: var(--tor-ink);
  font-weight: 650;
}

.tor-tower { margin: 0; }
.tor-tower__draw {
  width: min(100%, 560px);
  margin-inline: auto;
}
.tor-tower__draw img,
.tor-tower__draw svg {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 1250;
  overflow: visible;
}

/* i numeri: in colonna, a destra della torre */
.tor-read {
  display: none;
  margin: 0;
}
.tor-read > div {
  position: relative;
  padding-block: 16px;
  border-top: 1px solid var(--tor-rule);
}
.tor-read > div:last-child { border-bottom: 1px solid var(--tor-rule); }
.tor-read dt {
  color: var(--tor-muted);
  font: 500 0.7rem/1.3 var(--tor-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.tor-read dd {
  margin: 6px 0 0;
  color: var(--tor-ink);
  font-size: clamp(1.5rem, 2.4vw, 2.2rem);
  font-weight: 720;
  letter-spacing: -0.03em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.tor-read > div:nth-child(2) dd { color: var(--tor-accent-ink); }
.tor-read > div:nth-child(3) dd {
  color: var(--tor-gray);
  font-size: clamp(1.2rem, 1.7vw, 1.5rem);
  font-weight: 650;
}
.tor-read__bar {
  display: block;
  height: 3px;
  margin-top: 10px;
  border-radius: 3px;
  background: rgba(37, 99, 235, 0.14);
  overflow: hidden;
}
.tor-read__bar i {
  display: block;
  height: 100%;
  background: var(--tor-accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.tor-sfida__end {
  max-width: 44ch;
  margin: clamp(48px, 6vw, 80px) auto 0;
  color: var(--tor-gray);
  font-size: clamp(1.3rem, 2.2vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.3;
  text-align: center;
  text-wrap: balance;
}
.tor-sfida__end b {
  color: var(--tor-ink);
  font-weight: 700;
}

/* ---- con JS: il palco si aggancia e la torre segue lo scroll ---- */
.tor-sfida.is-live .tor-sfida__track {
  height: 340vh;
  padding-top: 0;
}
.tor-sfida.is-live .tor-sfida__stage {
  position: sticky;
  top: var(--tor-nav);
  display: flex;
  align-items: center;
  height: calc(100vh - var(--tor-nav));
  height: calc(100svh - var(--tor-nav));
}
/* la torre prende l'altezza del palco: la sua larghezza (4:5) decide la colonna di mezzo */
.tor-sfida.is-live {
  --tor-tower-w: min(calc((100vh - var(--tor-nav) - 56px) * 0.8), 624px);
  --tor-tower-w: min(calc((100svh - var(--tor-nav) - 56px) * 0.8), 624px);
}
.tor-sfida.is-live .tor-sfida__grid {
  width: min(100% - 40px, 1240px);
  grid-template-columns: minmax(0, 0.9fr) var(--tor-tower-w) minmax(0, 0.42fr);
}
.tor-sfida.is-live .tor-read { display: block; }
.tor-sfida.is-live .tor-tower__draw { width: 100%; }
.tor-sfida.is-live .tor-sfida__steps { display: grid; }
.tor-sfida.is-live .tor-sfida__step {
  grid-area: 1 / 1;
  align-self: center;
  padding: 0;
  border: 0;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--tor-ease), transform 0.5s var(--tor-ease);
}
.tor-sfida.is-live .tor-sfida__step.is-on {
  opacity: 1;
  transform: none;
}
.tor-sfida.is-live .tor-sfida__n { padding: 0; font-size: 0.9rem; letter-spacing: 0.06em; }
.tor-sfida.is-live .tor-sfida__step p {
  font-size: clamp(1.3rem, 2vw, 1.85rem);
  line-height: 1.35;
  letter-spacing: -0.022em;
}

/* =============================================================
   3 · LA SOLUZIONE — bento
   ============================================================= */
.tor-sys {
  padding-block: var(--tor-pad);
  background: var(--tor-mist);
}
.tor-bento {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(14px, 1.6vw, 22px);
  margin-top: clamp(56px, 7vw, 88px);
}
.tor-tile {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 24px;
  background: #ffffff;
}
.tor-tile figure { margin: 0; }
.tor-tile__k {
  margin: 0;
  color: var(--tor-accent-deep);
  font: 600 0.74rem/1.3 var(--tor-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.tor-tile h3 {
  margin: 0;
  color: var(--tor-ink);
  font-size: clamp(1.25rem, 1.6vw, 1.45rem);
  font-weight: 740;
  letter-spacing: -0.025em;
  line-height: 1.15;
}
.tor-tile p:not(.tor-tile__k) {
  margin: 8px 0 0;
  color: var(--tor-gray);
  font-size: 1rem;
  line-height: 1.5;
}

/* la pagina di processo: tessera larga, schermata a destra */
.tor-tile--draw {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.5fr);
  gap: clamp(24px, 3vw, 56px);
  align-items: center;
  padding: clamp(32px, 4.4vw, 64px);
}
.tor-tile--draw h3 {
  margin-top: 14px;
  font-size: clamp(1.8rem, 2.8vw, 2.6rem);
  font-weight: 780;
  letter-spacing: -0.04em;
  line-height: 1.04;
}
.tor-tile--draw .tor-tile__copy p:not(.tor-tile__k) {
  margin-top: 16px;
  max-width: 34ch;
  font-size: clamp(1rem, 1.2vw, 1.1rem);
}
/* la schermata e' vettoriale: resta nitida a ogni misura. Una cornice sottile, come un vetro. */
.tor-screen {
  overflow: hidden;
  border-radius: clamp(8px, 1vw, 14px);
  box-shadow: 0 0 0 1px rgba(11, 18, 32, 0.12), 0 30px 60px -36px rgba(11, 18, 32, 0.45);
}
.tor-screen img {
  display: block;
  width: 100%;
  height: auto;
}
.tor-tile__draw figcaption {
  margin-top: 14px;
  color: var(--tor-muted);
  font: 500 0.72rem/1.4 var(--tor-mono);
  letter-spacing: 0.05em;
}

.tor-tile--photo figure {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #dde2e8;
}
.tor-tile--photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.9s var(--tor-ease);
}
/* la foto degli allarmi e' verticale: si tiene lo schermo e la colonna rossa */
.tor-tile--photo .tor-tile__img--allarmi { object-position: 50% 72%; }
.tor-tile--photo:hover img { transform: scale(1.03); }
.tor-tile--photo .tor-tile__copy { padding: 22px 26px 28px; }

/* =============================================================
   4 · COSA ABBIAMO PORTATO
   ============================================================= */
.tor-porta { padding-block: var(--tor-pad); }
.tor-porta__list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(14px, 1.6vw, 22px);
  margin: clamp(56px, 7vw, 88px) 0 0;
  padding: 0;
  list-style: none;
}
.tor-porta__list li {
  display: flex;
  flex-direction: column;
  min-height: 300px;
  padding: clamp(26px, 2.6vw, 34px);
  border-radius: 24px;
  background: var(--tor-mist);
}
.tor-porta__n {
  color: var(--tor-accent);
  font-size: clamp(2.6rem, 3.6vw, 3.4rem);
  font-weight: 760;
  letter-spacing: -0.05em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.tor-porta__list h3 {
  margin: clamp(36px, 4vw, 56px) 0 0;
  color: var(--tor-ink);
  font-size: clamp(1.3rem, 1.7vw, 1.5rem);
  font-weight: 740;
  letter-spacing: -0.025em;
  line-height: 1.15;
}
.tor-porta__list p {
  margin: 10px 0 0;
  max-width: 36ch;
  color: var(--tor-gray);
  font-size: 0.98rem;
  line-height: 1.5;
}
.tor-porta__list .tor-link { margin-top: auto; padding-top: 22px; align-self: flex-start; }

/* =============================================================
   5 · LE FOTO — una striscia sola, alta uguale, che scorre di lato.
   Le foto tengono il loro rapporto (niente ritagli): dal visore
   tornano qui senza salti.
   ============================================================= */
.tor-gal {
  --tor-gal-pad: max(20px, (100vw - var(--max-width, 1200px)) / 2);
  --tor-gal-h: clamp(190px, 27vw, 380px);
  padding-block: clamp(24px, 3vw, 48px) var(--tor-pad);
}
.tor-gal__viewport {
  margin-top: clamp(48px, 6vw, 80px);
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x proximity;
  scroll-padding-inline: var(--tor-gal-pad);
  overscroll-behavior-x: contain;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.tor-gal__viewport::-webkit-scrollbar { display: none; }
.tor-gal__viewport:focus-visible { outline-offset: -3px; }
.tor-gal__viewport.is-drag {
  scroll-snap-type: none;
  cursor: grabbing;
}
.tor-gal__viewport.is-drag .tor-shot { pointer-events: none; }
.tor-gal__strip {
  display: flex;
  gap: clamp(10px, 1.2vw, 18px);
  width: max-content;
  margin: 0;
  padding: 4px var(--tor-gal-pad) 6px;
  list-style: none;
}
.tor-gal__item {
  flex: 0 0 auto;
  scroll-snap-align: start;
}
.tor-shot {
  display: grid;
  color: inherit;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}
.tor-shot__img {
  position: relative;
  display: block;
  height: var(--tor-gal-h);
  overflow: hidden;
  border-radius: clamp(12px, 1.4vw, 20px);
  background: #dde2e8;
}
.tor-shot__img img {
  display: block;
  width: auto;
  height: 100%;
  max-width: none;
  transition: transform 0.9s var(--tor-ease);
  -webkit-user-drag: none;
}
.tor-shot__open {
  position: absolute;
  right: 12px;
  bottom: 12px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: var(--tor-ink);
  box-shadow: 0 6px 16px -8px rgba(11, 18, 32, 0.6);
  opacity: 0;
  transform: scale(0.86);
  transition: opacity 0.25s ease, transform 0.35s var(--tor-ease);
}
.tor-shot__open svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
/* la didascalia non deve allargare la tessera oltre la foto */
.tor-shot__cap {
  display: grid;
  gap: 3px;
  width: 0;
  min-width: 100%;
  margin-top: 12px;
}
.tor-shot__cap b {
  color: var(--tor-ink);
  font-size: 0.95rem;
  font-weight: 650;
  letter-spacing: -0.012em;
  line-height: 1.25;
}
.tor-shot__meta {
  color: var(--tor-muted);
  font: 500 0.7rem/1.4 var(--tor-mono);
  letter-spacing: 0.05em;
}
@media (hover: hover) {
  .tor-gal__viewport { cursor: grab; }
  .tor-shot { cursor: zoom-in; }
  .tor-shot:hover .tor-shot__img img { transform: scale(1.035); }
  .tor-shot:hover .tor-shot__open,
  .tor-shot:focus-visible .tor-shot__open {
    opacity: 1;
    transform: none;
  }
}
@media (hover: none) {
  .tor-shot__open {
    opacity: 1;
    transform: none;
    width: 30px;
    height: 30px;
    right: 8px;
    bottom: 8px;
  }
  .tor-shot__open svg { width: 14px; height: 14px; }
}

.tor-gal__ctrl {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.4vw, 32px);
  margin-top: clamp(24px, 3vw, 40px);
}
.tor-gal__hint {
  flex: 0 0 auto;
  margin: 0;
  color: var(--tor-muted);
  font: 500 0.74rem/1.3 var(--tor-mono);
  letter-spacing: 0.06em;
}
.tor-gal__bar {
  position: relative;
  flex: 1 1 auto;
  height: 3px;
  border-radius: 3px;
  background: rgba(15, 23, 42, 0.1);
  overflow: hidden;
}
.tor-gal__bar i {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 30%;
  border-radius: 3px;
  background: var(--tor-ink);
}
.tor-gal__nav {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
}
.tor-gal__btn {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(15, 23, 42, 0.16);
  border-radius: 50%;
  background: #ffffff;
  color: var(--tor-ink);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, opacity 0.2s ease, transform 0.25s var(--tor-ease);
}
.tor-gal__btn svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.tor-gal__btn:hover:not(:disabled) {
  background: var(--tor-ink);
  border-color: var(--tor-ink);
  color: #ffffff;
}
.tor-gal__btn:active:not(:disabled) { transform: scale(0.94); }
.tor-gal__btn:disabled {
  opacity: 0.32;
  cursor: default;
}
/* senza JS la striscia scorre lo stesso: frecce e barra non servono.
   Classe propria (.is-live, la mette il JS della galleria) e non html.reveal-ready:
   quella sparisce se un blocca-pubblicita' ferma uno script qualsiasi. */
.tor-gal:not(.is-live) .tor-gal__bar,
.tor-gal:not(.is-live) .tor-gal__nav { visibility: hidden; }

/* =============================================================
   6 · ALTRI PROGETTI
   ============================================================= */
.tor-more {
  padding-block: var(--tor-pad);
  background: var(--tor-mist);
}
.tor-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
  max-width: 920px;
  margin: clamp(56px, 7vw, 88px) auto 0;
}
.tor-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.07);
  border-radius: 20px;
  background: #ffffff;
  transition: transform 0.45s var(--tor-ease), box-shadow 0.45s var(--tor-ease);
}
.tor-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px -28px rgba(11, 18, 32, 0.35);
}
.tor-card__photo {
  margin: 0;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: #dde2e8;
}
.tor-card__photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 60%;
  transition: transform 0.9s var(--tor-ease);
}
/* la foto del ponte e' molto larga: si tiene il carousel con la gru */
.tor-card__photo .tor-card__img--nave { object-position: 58% 50%; }
.tor-card:hover .tor-card__photo img { transform: scale(1.04); }
.tor-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: clamp(20px, 2vw, 28px);
}
.tor-card__n {
  margin: 0;
  color: var(--tor-accent-deep);
  font: 600 0.74rem/1.3 var(--tor-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.tor-card h3 {
  margin: 10px 0 0;
  color: var(--tor-ink);
  font-size: clamp(1.35rem, 1.9vw, 1.6rem);
  font-weight: 760;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.tor-card__body p:not(.tor-card__n) {
  margin: 10px 0 0;
  color: var(--tor-gray);
  font-size: 0.98rem;
  line-height: 1.5;
}
.tor-card__link {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 18px;
}
/* tutta la scheda porta al progetto */
.tor-card__link::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
}
.tor-card:hover .tor-card__link span { transform: translateX(3px); }

/* =============================================================
   7 · IL PRIMO PASSO
   ============================================================= */
.tor-cta { padding-block: var(--tor-pad); }
.tor-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: clamp(32px, 4vw, 44px);
}
.tor-cta__note {
  margin: 24px auto 0;
  max-width: 44ch;
  color: var(--tor-copy);
  line-height: 1.55;
}

/* =============================================================
   Tablet e telefono
   ============================================================= */
/* la hero non si affianca piu': testo su bianco, foto sotto da bordo a bordo */
@media (max-width: 900px) {
  .tor-hero__stage {
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: visible;
  }
  .tor-hero__stage::before { content: none; }
  .tor-hero__inner { padding-block: clamp(40px, 8vw, 64px) clamp(32px, 6vw, 48px); }
  .tor-hero__copy { max-width: 620px; }
  .tor-hero h1,
  .tor-hero__lead { text-shadow: none; }
  .tor-hero__photo {
    position: relative;
    inset: auto;
    z-index: 0;
    order: 2;
    width: 100%;
    -webkit-mask-image: none;
    mask-image: none;
  }
  .tor-hero__photo img {
    height: auto;
    aspect-ratio: 3 / 2;
    object-position: 50% 50%;
  }
}

@media (max-width: 1100px) {
  /* i numeri escono di scena: sono gia' nel terzo passaggio */
  .tor-sfida.is-live .tor-sfida__grid { grid-template-columns: minmax(0, 0.9fr) var(--tor-tower-w); }
  .tor-sfida.is-live .tor-read { display: none; }

  .tor-porta__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tor-porta__list li { min-height: 0; }
}

@media (max-width: 980px) {
  .tor-sfida__grid { grid-template-columns: minmax(0, 1fr); }
  .tor-sfida__grid .tor-tower { order: -1; }
  .tor-sfida.is-live .tor-sfida__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }
  /* torre sopra, passaggi sotto: la torre lascia ai passaggi lo spazio di cinque righe */
  .tor-sfida.is-live {
    --tor-tower-w: min(100%, calc((100vh - var(--tor-nav) - 230px) * 0.8), 512px);
    --tor-tower-w: min(100%, calc((100svh - var(--tor-nav) - 230px) * 0.8), 512px);
  }
  .tor-sfida.is-live .tor-tower__draw {
    width: var(--tor-tower-w);
    margin-inline: auto;
  }
  .tor-sfida.is-live .tor-sfida__steps { min-height: 8.6em; align-content: start; }
  .tor-sfida.is-live .tor-sfida__step { align-self: start; gap: 8px; }

  .tor-bento { grid-template-columns: minmax(0, 1fr); max-width: 620px; margin-inline: auto; }
  .tor-tile--draw { grid-template-columns: minmax(0, 1fr); }
  .tor-tile--photo figure { aspect-ratio: 4 / 3; }


  .tor-cards { grid-template-columns: minmax(0, 1fr); max-width: 560px; }
}

@media (max-width: 700px) {
  .tor-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 16px; }

  /* come su Ulisse e tubetti: due colonne fino a qui, poi una */
  .tor-porta__list { grid-template-columns: minmax(0, 1fr); }
  .tor-porta__list li { min-height: 0; }

  /* disegno: su telefono le scritte diventerebbero di 8 px, e a 40 px non ci
     stanno piu' nel foglio. Restano solo il disegno e i numeri: quello che le
     scritte dicevano lo dice il passaggio scritto qui accanto. */
  .tor-tower__draw svg .tt-t { font-size: 40px; }
  .tor-tower__draw svg .tt-t--sub,
  .tor-tower__draw svg .tt-lab,
  .tor-tower__draw svg .tt-gname { display: none; }
  .tor-sfida.is-live .tor-sfida__track { height: 300vh; }
  .tor-sfida.is-live .tor-sfida__step p { font-size: 1.12rem; }

  /* la schermata esce dai margini della tessera: piu' larga, piu' leggibile */
  .tor-tile--draw { padding: 28px 18px 22px; }
  .tor-tile--draw .tor-tile__copy { padding-inline: 6px; }

  .tor-gal__hint { display: none; }
  .tor-shot__cap b { font-size: 0.86rem; }
}

/* =============================================================
   Telefono in verticale · qui l'apertura e' quella del sito
   Non piu' "prima il testo, poi una striscia di foto": foto a
   TUTTA SCHERMATA, UN SOLO velo verticale (sovrapponendone due le
   opacita' si sommano e la foto sparisce) e titolo scuro sopra,
   come la home. La foto e' un ritaglio 9:16 suo (frontale-tel-*), composto
   in modo che la macchina stia in alto e in basso resti il pavimento con le bobine:
   e' li' che il velo diventa bianco e regge il testo, cosi' il
   soggetto non finisce mai sotto alle parole.
   Sotto i 600 px di ALTEZZA non si entra (telefono coricato):
   resta il ripiego a colonna del blocco dei 900 px, come sopra i 560 px di
   larghezza, dove non si e' piu' su un telefono.
   ============================================================= */
@media (max-width: 560px) and (min-height: 600px) {
  .tor-hero { padding-bottom: clamp(28px, 6vw, 44px); }
  .tor-hero__stage {
    display: grid;
    align-items: end;
    min-height: calc(100vh - var(--tor-nav));
    min-height: calc(100svh - var(--tor-nav));
    overflow: hidden;
  }
  /* la foto torna dietro a tutto, da bordo a bordo */
  .tor-hero__photo {
    position: absolute;
    inset: 0;
    z-index: -2;
    order: 0;
    width: auto;
  }
  .tor-hero__photo img {
    height: 100%;
    aspect-ratio: auto;
    object-position: 50% 50%;
  }
  /* Il velo, uno solo, verticale. Le tappe sono un min() fra PIXEL misurati dal
     basso e percentuale del palco: il testo e' alto quello che e' (~420 px) e i
     pixel garantiscono che ci stia dentro sui telefoni alti; sui telefoni corti
     (SE, 667 px) comanda la percentuale, se no la sfumatura finirebbe fuori dal
     palco e la foto resterebbe velata dappertutto. */
  .tor-hero__stage::before {
    content: "";
    /* ripiego per chi non digerisce min() dentro alle tappe: solo pixel */
    background: linear-gradient(
      0deg,
      #ffffff 0,
      #ffffff 270px,
      rgba(255, 255, 255, 0.92) 360px,
      rgba(255, 255, 255, 0.78) 430px,
      rgba(255, 255, 255, 0.5) 510px,
      rgba(255, 255, 255, 0.18) 590px,
      rgba(255, 255, 255, 0) 680px
    );
    background: linear-gradient(
      0deg,
      #ffffff 0,
      #ffffff min(270px, 34%),
      rgba(255, 255, 255, 0.92) min(360px, 45%),
      rgba(255, 255, 255, 0.78) min(430px, 55%),
      rgba(255, 255, 255, 0.5) min(510px, 66%),
      rgba(255, 255, 255, 0.18) min(590px, 77%),
      rgba(255, 255, 255, 0) min(680px, 89%)
    );
  }
  .tor-hero__inner {
    position: relative;
    padding-block: 0 clamp(18px, 4.5vw, 28px);
  }
  .tor-hero__copy { max-width: none; }
  .tor-hero h1 {
    font-size: clamp(2rem, 8.2vw, 2.7rem);
    /* sotto c'e' la foto: torna l'alone bianco, come sul desktop */
    text-shadow: 0 0 26px rgba(255, 255, 255, 0.95), 0 0 6px rgba(255, 255, 255, 0.75);
  }
  .tor-hero__lead {
    margin-top: 18px;
    font-size: 1.02rem;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.95);
  }
  .tor-hero__actions { margin-top: 24px; }
  /* La didascalia va in alto: in basso c'e' il testo. Piccola e con la pillola
     appena accennata — senza fondo, sul verde della gru o sulle parti scure,
     dieci pixel di grigio non si leggerebbero. */
  .tor-hero__photo figcaption {
    top: clamp(14px, 3.4vw, 20px);
    right: clamp(16px, 4.5vw, 22px);
    bottom: auto;
    max-width: calc(100% - 40px);
    padding: 4px 9px;
    background: rgba(255, 255, 255, 0.64);
    font-size: 0.62rem;
  }
  .tor-facts { margin-top: clamp(28px, 7vw, 40px); }
}

/* telefono corto (SE e simili): il testo deve stare nella parte velata, se no il
   titolo finisce sulla foto nuda. Si stringe il testo, non si allunga il velo. */
@media (max-width: 560px) and (min-height: 600px) and (max-height: 760px) {
  .tor-hero h1 { font-size: clamp(1.8rem, 7.3vw, 2.3rem); }
  .tor-hero__lead { margin-top: 14px; font-size: 0.96rem; }
  .tor-hero__actions { margin-top: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal-ready .tor-in { opacity: 1; transform: none; transition: none; }
  .reveal-ready .tor-hero__photo img,
  .reveal-ready .tor-hero__copy > * { animation: none; }
  .tor-link span,
  .tor-card,
  .tor-card__photo img,
  .tor-tile--photo img,
  .tor-shot__img img,
  .tor-shot__open { transition: none; }
  .tor-shot:hover .tor-shot__img img { transform: none; }
  .tor-card:hover,
  .tor-card:hover .tor-card__photo img,
  .tor-tile--photo:hover img { transform: none; }
}