/* ============================================================
   onebirdie capital — foglio di stile unico
   Palette: blu notte + bianco fresco, accento azzurro.
   Font self-hosted: Plus Jakarta Sans (unica famiglia,
   la gerarchia la fanno peso e dimensione).
   ============================================================ */

/* ---- Font ---- */
@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("../fonts/plus-jakarta-sans-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("../fonts/plus-jakarta-sans-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("../fonts/plus-jakarta-sans-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* ---- Variabili ---- */
:root {
  --night-1: #0D1526;
  --brand: #1D2B4D; /* navy del logo */
  --night-2: #2A3C66;
  --white: #FFFFFF;
  --ink: #10151D;
  --text: #565B63;
  --muted: #878C93;
  --hairline: #E8EAED;
  --accent-on-dark: #9FBEE4;
  --accent-on-light: #33507A;
  --font: "Plus Jakarta Sans", -apple-system, "Segoe UI", sans-serif;
  --pad-x: clamp(1.25rem, 5vw, 4rem);
  --max-w: 1240px;
}

/* ---- Base ---- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--night-2); color: var(--white); }

img { max-width: 100%; display: block; }

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent-on-light);
  outline-offset: 3px;
  border-radius: 2px;
}

.dark :focus-visible { outline-color: var(--accent-on-dark); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--white);
  color: var(--ink);
  padding: 0.6rem 1rem;
}
.skip-link:focus { left: 0; }

.comma { color: var(--accent-on-light); }
.dark .comma { color: var(--accent-on-dark); }

/* ---- Nav ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem var(--pad-x);
  /* Solo il movimento è animato: i cambi di colore sono istantanei,
     così non si vedono mai stati intermedi */
  transition: transform 0.3s ease;
}

/* Scorrendo verso il basso la nav si nasconde; riappare risalendo */
.nav--hidden { transform: translateY(-100%); }

.nav__logo { display: block; line-height: 0; }

.nav__logo img { height: 24px; width: auto; display: block; }

/* Due versioni del logo: bianca sull'hero, navy dopo lo scroll / su pagine chiare */
.nav__logo .logo-navy { display: none; }
.nav--scrolled .nav__logo .logo-white, .nav--light .nav__logo .logo-white { display: none; }
.nav--scrolled .nav__logo .logo-navy, .nav--light .nav__logo .logo-navy { display: block; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.7rem;
  list-style: none;
}

.nav__links a {
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  color: rgba(255, 255, 255, 0.75);
  transition: color 0.25s ease;
}

.nav__links a:hover { color: var(--white); }

.nav__lang {
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
}

/* Nav lontano dalla cima: bianca piena e opaca, testo scuro.
   Nessuna ombra né bordo: sul contenuto bianco deve fondersi. */
.nav--scrolled {
  background: var(--white);
}
.nav--scrolled .nav__links a { color: var(--text); }
.nav--scrolled .nav__links a:hover { color: var(--ink); }
.nav--scrolled .nav__lang { border-color: var(--hairline); }

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 7rem var(--pad-x) 6rem;
  overflow: hidden;
}

/* Layer di sfondo separato: un domani può ospitare un <video> senza
   toccare il resto della struttura. Grana + luci via background-image
   (longhand: più robusto dello shorthand multi-layer), anelli del
   marchio disegnati con i pseudo-elementi. */
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background-color: var(--brand);
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3CfeComponentTransfer%3E%3CfeFuncA type='linear' slope='0.05'/%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E"),
    radial-gradient(ellipse 70% 90% at 85% 8%, rgba(104, 144, 216, 0.55), transparent 60%),
    radial-gradient(ellipse 50% 40% at 100% 62%, rgba(70, 125, 175, 0.28), transparent 65%),
    radial-gradient(ellipse 90% 70% at 0% 100%, rgba(2, 5, 12, 0.8), transparent 65%),
    linear-gradient(115deg, transparent 42%, rgba(255, 255, 255, 0.05) 52%, transparent 62%),
    linear-gradient(155deg, #0A1120 0%, #1D2B4D 52%, #3A4F82 100%);
}

/* Anelli concentrici — eco del marchio circolare, tagliati dal bordo destro */
.hero__bg::before,
.hero__bg::after {
  content: "";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 50%;
}

.hero__bg::before {
  width: 116vmin;
  height: 116vmin;
  right: -52vmin;
  border: 1.5px solid rgba(159, 190, 228, 0.28);
}

.hero__bg::after {
  width: 86vmin;
  height: 86vmin;
  right: -37vmin;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero__inner { position: relative; z-index: 1; max-width: var(--max-w); width: 100%; margin: 0 auto; }

.hero__title {
  font-family: var(--font);
  font-weight: 600;
  letter-spacing: -0.025em;
  font-size: clamp(2.5rem, 6.2vw, 4.6rem);
  line-height: 1.06;
  color: var(--white);
  max-width: 13em;
}

.hero__sub {
  margin-top: 1.8rem;
  font-size: clamp(0.82rem, 1.3vw + 0.15rem, 1.15rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
}

/* Il <br> tiene il sottotitolo su due righe da tablet in su;
   sotto i 768px si torna al flusso naturale. */
.hero__sub br { display: none; }

@media (min-width: 768px) {
  .hero__sub br { display: inline; }
}

.hero__actions {
  margin-top: 2.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 44px;
  background: rgba(255, 255, 255, 0.22);
}

/* ---- Bottoni ---- */
.btn {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  padding: 0.8rem 1.8rem;
  border-radius: 999px;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.btn--solid { background: var(--white); color: var(--night-1); }
.btn--solid:hover { background: var(--accent-on-dark); }

.btn--ghost { color: var(--white); border: 1px solid rgba(255, 255, 255, 0.4); }
.btn--ghost:hover { border-color: var(--white); }

/* ---- Sezioni ---- */
.section { padding: clamp(4.5rem, 9vw, 7.5rem) var(--pad-x); }

.section__inner { max-width: var(--max-w); margin: 0 auto; }

.section--hairline-top .section__inner { border-top: 1px solid var(--hairline); padding-top: clamp(4.5rem, 9vw, 7.5rem); }
.section--hairline-top { padding-top: 0; }

.dark {
  background: linear-gradient(160deg, var(--night-1) 0%, var(--brand) 60%, var(--night-2) 100%);
  color: var(--white);
}

.label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-on-light);
  margin-bottom: 1.4rem;
}

.dark .label { color: var(--accent-on-dark); }

.statement {
  font-family: var(--font);
  font-weight: 600;
  letter-spacing: -0.015em;
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  line-height: 1.12;
  max-width: 17em;
}

.section__body {
  margin-top: 1.4rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text);
  max-width: 36em;
}

.dark .section__body { color: rgba(255, 255, 255, 0.72); }

/* Colonne separate da hairline */
.columns {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 2.2rem 2.8rem;
  border-top: 1px solid var(--hairline);
  padding-top: 2rem;
}

.dark .columns { border-top-color: rgba(255, 255, 255, 0.16); }

.columns h3 {
  font-family: var(--font);
  font-size: 0.98rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
}

.columns p { font-size: 0.92rem; line-height: 1.7; color: var(--muted); }

.dark .columns p { color: rgba(255, 255, 255, 0.6); }

/* Titolo a tutta larghezza, poi testo a sinistra e pilastri a destra,
   con i bordi superiore e inferiore delle due colonne allineati */
.model {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: stretch;
  margin-top: 2.4rem;
}

.model .section__body { margin-top: 0; max-width: none; font-size: 1.06rem; line-height: 2.05; }

/* Pilastri a quadranti: griglia 2×2 con divisori a croce tra le celle */
.quadrants {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  height: 100%;
}

.q-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #EAF0F7;
  color: var(--accent-on-light);
  grid-column: 1;
  grid-row: 1;
}

.quadrants > div {
  padding: 1.2rem 2rem 1.2rem 0;
  display: grid;
  grid-template-columns: 36px 1fr;
  column-gap: 0.9rem;
  align-content: start;
}

.quadrants > div:nth-child(even) {
  border-left: 1px solid var(--hairline);
  padding-left: 2rem;
  padding-right: 0;
}

.quadrants > div:nth-child(-n+2) { padding-top: 0; }

/* La riga inferiore ancora il contenuto in basso, così l'ultima riga di
   testo resta a filo del fondo del paragrafo accanto */
.quadrants > div:nth-child(n+3) {
  border-top: 1px solid var(--hairline);
  padding-bottom: 0;
  align-content: end;
}

.quadrants h3 {
  font-size: 0.98rem;
  font-weight: 600;
  grid-column: 2;
  align-self: center;
  min-height: 36px;
  display: flex;
  align-items: center;
}

.quadrants p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--muted);
  grid-column: 1 / -1;
  margin-top: 0.55rem;
}

@media (max-width: 640px) {
  .quadrants { grid-template-columns: 1fr; }
  .quadrants > div { padding: 1.25rem 0 !important; border-left: none !important; }
  .quadrants > div:first-child { padding-top: 0 !important; }
  .quadrants > div:nth-child(n+2) { border-top: 1px solid var(--hairline); }
}

/* ---- Chi siamo ---- */
.about {
  margin-top: 3.5rem;
  display: grid;
  grid-template-columns: minmax(200px, 280px) 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
  border-top: 1px solid var(--hairline);
  padding-top: 2.6rem;
}

/* La foto si allinea in alto e in basso con la colonna di testo:
   il contenitore si stira e l'immagine si ritaglia con object-fit */
.about picture { display: block; line-height: 0; height: 100%; }

.about__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 6px;
}

.about__name { font-family: var(--font); font-weight: 600; font-size: 1.35rem; }

.about__role {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-on-light);
  margin: 0.4rem 0 1.1rem;
}

.about__bio { font-size: 0.98rem; line-height: 1.75; color: var(--text); }

.about__bio + .about__bio { margin-top: 0.9rem; }

.about__link {
  display: inline-block;
  margin-top: 1.2rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent-on-light);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}

/* ---- I nostri investitori ---- */
.investors-block {
  margin-top: 3.5rem;
  border-top: 1px solid var(--hairline);
  padding-top: 2.6rem;
}

.investors {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(3, auto);
  justify-content: space-between;
  gap: 2.5rem;
  align-items: center;
}

.inv-stat strong {
  display: block;
  font-weight: 500;
  letter-spacing: -0.02em;
  font-size: clamp(3rem, 5vw, 4.2rem);
  line-height: 1;
  color: var(--accent-on-light);
}

.inv-stat span { display: block; margin-top: 0.5rem; font-size: 0.95rem; color: var(--muted); }

.inv-chart { display: flex; align-items: center; gap: 1.5rem; }

/* Donut in CSS puro: anello con conic-gradient e foro bianco */
.donut {
  width: 118px;
  height: 118px;
  flex-shrink: 0;
  border-radius: 50%;
  position: relative;
}

.donut::after {
  content: "";
  position: absolute;
  inset: 19px;
  border-radius: 50%;
  background: var(--white);
}

.donut--tipo { background: conic-gradient(#33507A 0 65%, #93A9C9 65% 100%); }

.donut--geo { background: conic-gradient(#33507A 0 52%, #93A9C9 52% 89%, #DCE5F1 89% 100%); }

.inv-legend {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text);
}

.inv-legend li { display: flex; align-items: center; gap: 0.5rem; }

.inv-legend li::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.inv-legend .lg-a::before { background: #33507A; }
.inv-legend .lg-b::before { background: #93A9C9; }
.inv-legend .lg-c::before { background: #DCE5F1; }

.inv-legend em { font-style: normal; font-weight: 600; color: var(--ink); }

@media (max-width: 860px) {
  .investors { grid-template-columns: 1fr; gap: 2rem; }
}

/* ---- Sezione grigia (Cosa cerchiamo) ---- */
.section--grey {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 55% 75% at 88% 12%, rgba(51, 80, 122, 0.09), transparent 60%),
    linear-gradient(160deg, #F2F4F8 0%, #E8ECF3 100%);
}

/* Eco dell'anello del marchio, tagliato dall'angolo in alto a destra */
.section--grey::before {
  content: "";
  position: absolute;
  top: -32vmin;
  right: -24vmin;
  width: 85vmin;
  height: 85vmin;
  border: 1.5px solid rgba(29, 43, 77, 0.1);
  border-radius: 50%;
}

.section--grey .section__inner { position: relative; }

/* Variante: etichetta e titolo nella metà destra; un arco di
   circonferenza abita il quadrante vuoto in alto a sinistra,
   senza toccare né il titolo né i contenuti sotto */
.section--right .label,
.section--right .statement {
  margin-left: 29%;
}

.section--right .statement {
  max-width: none;
  text-wrap: balance;
}

.section--right::before {
  top: -58vmin;
  right: auto;
  left: -42vmin;
  width: 92vmin;
  height: 92vmin;
  transform: none;
}

@media (max-width: 1024px) {
  .section--right .label,
  .section--right .statement { margin-left: 0; }
  .section--right::before { display: none; }
}

.section--grey .columns { border-top-color: #D9DFE7; }

/* ---- Numeri chiave ---- */
.stats {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  border-top: 1px solid #D9DFE7;
  padding-top: 2rem;
}

.stats div strong {
  display: block;
  font-family: var(--font);
  font-weight: 500;
  letter-spacing: -0.01em;
  font-size: clamp(1.7rem, 2.6vw, 2.3rem);
  line-height: 1.15;
  color: var(--accent-on-light);
}

.stats div span { font-size: 0.85rem; color: var(--muted); }

/* ---- Timeline del processo ---- */
.timeline {
  margin-top: 3.5rem;
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2.2rem;
}

/* La linea che unisce le tappe, sfuma verso destra */
.timeline::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-on-light) 0%, var(--hairline) 100%);
}

.tl-step { position: relative; }

.tl-num {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--white);
  border: 1px solid var(--accent-on-light);
  color: var(--accent-on-light);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1.1rem;
}

/* I pallini si riempiono progressivamente, da bianco a blu */
.tl-step:nth-child(2) .tl-num {
  background: #DCE5F1;
  border-color: #DCE5F1;
}

.tl-step:nth-child(3) .tl-num {
  background: #93A9C9;
  border-color: #93A9C9;
  color: var(--white);
}

.tl-step:nth-child(4) .tl-num {
  background: var(--accent-on-light);
  border-color: var(--accent-on-light);
  color: var(--white);
}

.tl-step h3 { font-size: 1.02rem; font-weight: 600; margin-bottom: 0.5rem; }

.tl-step p { font-size: 0.92rem; line-height: 1.7; color: var(--muted); }

/* Chiusura della timeline: divider a tutta larghezza e frase centrata */
.tl-kicker {
  margin-top: 3.5rem;
  border-top: 1px solid var(--hairline);
  padding-top: 2.4rem;
  text-align: center;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.6;
  color: var(--text);
}

.tl-kicker strong { font-weight: 600; color: var(--ink); }

@media (max-width: 860px) {
  .timeline { grid-template-columns: 1fr; gap: 2.2rem; }
  .timeline::before {
    top: 0;
    bottom: 0;
    left: 20px;
    right: auto;
    width: 1px;
    height: auto;
    background: linear-gradient(180deg, var(--accent-on-light) 0%, var(--hairline) 100%);
  }
  .tl-step { padding-left: 3.6rem; }
  .tl-num { position: absolute; left: 0; top: 0; margin: 0; }
}

/* ---- Riservatezza ---- */
.note {
  margin-top: 3rem;
  border-top: 1px solid var(--hairline);
  padding-top: 1.6rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--muted);
  max-width: 44em;
}

.note strong { color: var(--ink); font-weight: 600; }

/* ---- Contatti ---- */
/* La sezione finale riprende luce e anelli dell'hero: la pagina
   chiude come apre */
.dark--glow {
  position: relative;
  overflow: hidden;
  padding-top: clamp(6rem, 11vw, 9rem);
  padding-bottom: clamp(6rem, 11vw, 9rem);
  background:
    radial-gradient(ellipse 65% 85% at 85% 25%, rgba(93, 132, 205, 0.4), transparent 60%),
    radial-gradient(ellipse 120% 60% at 40% 115%, rgba(3, 6, 14, 0.7), transparent 70%),
    linear-gradient(160deg, var(--night-1) 0%, var(--brand) 55%, #33477A 100%);
}

.dark--glow::before,
.dark--glow::after {
  content: "";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 50%;
}

.dark--glow::before {
  width: 110vmin;
  height: 110vmin;
  right: -48vmin;
  border: 1.5px solid rgba(159, 190, 228, 0.26);
}

.dark--glow::after {
  width: 80vmin;
  height: 80vmin;
  right: -33vmin;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.dark--glow .section__inner { position: relative; z-index: 1; }

/* L'indirizzo è il gesto grafico della sezione: grande, in chiaro,
   selezionabile — nessun link */
.contact-address {
  margin-top: 2.6rem;
  font-family: var(--font);
  font-weight: 600;
  letter-spacing: -0.015em;
  font-size: clamp(1.5rem, 3.4vw, 2.7rem);
  line-height: 1.2;
  color: var(--white);
  overflow-wrap: anywhere;
}

/* ---- Footer ---- */
.footer {
  padding: 1.8rem var(--pad-x) 2rem;
  background: linear-gradient(160deg, #F2F4F8 0%, #E8ECF3 100%);
}

.footer__inner { max-width: var(--max-w); margin: 0 auto; }

/* Footer impilato e centrato */
.footer--stacked {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  text-align: center;
  line-height: 1.5;
}

.footer--stacked img { margin-bottom: 0.35rem; }

.footer--stacked .footer__org { max-width: none; }

/* Riga di voci separate da punti mediani */
.footer__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.8rem 0;
  font-size: 0.82rem;
  color: #525E74;
}

.footer__row > * { display: inline-flex; align-items: center; }

.footer__row > *:not(:first-child)::before {
  content: "·";
  margin: 0 1.1rem;
  color: #A9B2C2;
}

.footer__row img { height: 16px; width: auto; }

.footer__row a { color: #525E74; text-decoration: none; }

.footer__row a:hover { color: var(--ink); }

.footer__org {
  font-size: 0.82rem;
  line-height: 1.5;
  color: #525E74;
  max-width: 60em;
}

/* ---- Pagine legali ---- */
.legal { padding: 9rem var(--pad-x) 4rem; }

.legal__inner { max-width: 44em; margin: 0 auto; }

.legal h1 { font-family: var(--font); font-weight: 600; letter-spacing: -0.015em; font-size: clamp(2rem, 4vw, 2.8rem); line-height: 1.12; margin-bottom: 2rem; }

.legal h2 { font-family: var(--font); font-size: 1.05rem; font-weight: 600; margin: 2.2rem 0 0.6rem; }

.legal p, .legal li { font-size: 0.95rem; line-height: 1.8; color: var(--text); }

.legal ul { padding-left: 1.2rem; margin: 0.4rem 0; }

.legal a { color: var(--accent-on-light); }

/* Nav sulle pagine legali: sfondo chiaro fin da subito */
.nav--light { background: var(--white); }
.nav--light .nav__links a { color: var(--text); }
.nav--light .nav__links a:hover { color: var(--ink); }
.nav--light .nav__lang { border-color: var(--hairline); }

/* ---- Reveal on scroll ----
   Attivo solo con JS (html.js) e senza prefers-reduced-motion. */
.js .rv { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.25, 1, 0.5, 1); }

.js .rv.vis { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .rv { opacity: 1; transform: none; transition: none; }
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .model { grid-template-columns: 1fr; }
  .model .section__body { font-size: 1rem; line-height: 1.75; }
  .model .quadrants { margin-top: 0.5rem; height: auto; grid-template-rows: auto auto; }
  .quadrants > div:nth-child(n+3) { align-content: start; padding-bottom: 0; }
}

@media (max-width: 860px) {
  .nav__links { gap: 1.1rem; }
  .nav__links .nav-anchor { display: none; }
  .about { grid-template-columns: 1fr; }
  .about picture { height: auto; }
  .about__photo { max-width: 260px; height: auto; }
}