*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: var(--s-scroll, 1rem); background: var(--night); }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--f-text); font-size: var(--t-4); line-height: 1.55; -webkit-font-smoothing: antialiased; font-variant-numeric: tabular-nums; }
h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
:where(ul[class], ol[class]) { margin: 0; padding: 0; list-style: none; }
h1, h2 { font-family: var(--f-display); font-weight: 700; line-height: 1.04; letter-spacing: -0.03em; text-wrap: balance; }
h3 { font-family: var(--f-display); font-weight: 600; font-size: var(--t-3); line-height: 1.2; letter-spacing: -0.015em; text-wrap: balance; }
p { max-width: var(--measure); text-wrap: pretty; }
img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: 2px; text-underline-offset: 0.18em; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }
[hidden] { display: none !important; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: var(--margin); top: -4rem; z-index: 99; padding: 0.5rem 1rem; background: var(--select); border-radius: var(--pill); font-weight: 600; }
.skip:focus { top: 1rem; }

/* griglia: un paio di margini e dodici colonne per tutta la pagina */
.frame { width: 100%; max-width: 1920px; margin-inline: auto; padding-inline: var(--margin); }
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); }

/* bottoni: piatti, un colore, pillola */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; min-height: 3.25rem; padding: 0.75rem 1.75rem; border: 0; border-radius: var(--pill); background: var(--ink); color: var(--bg); font-weight: 600; font-size: var(--t-4); line-height: 1.2; text-decoration: none; cursor: pointer; transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease); }
.btn:hover { background: var(--ink-hover); }
.btn:active { transform: scale(0.97); }
.btn--go { background: var(--accent); color: var(--accent-ink); }
.btn--go:hover { background: var(--accent-hover); }
.btn--light { background: var(--bg); color: var(--ink); }
.btn--light:hover { background: var(--surface); }
.btn--block { width: 100%; }
.link { font-weight: 600; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 0.22em; cursor: pointer; background: none; border: 0; padding: 0; transition: text-decoration-color var(--dur) var(--ease); }
.link:hover { text-decoration-color: var(--accent); }

.demo { font-size: var(--t-5); font-weight: 600; color: var(--muted); }
.ph { background: var(--select); padding: 0 0.3em; border-radius: 4px; }

/* moduli: campi pieni, senza contorno; il fuoco è un anello d'inchiostro */
.field { display: grid; gap: 0.375rem; }
.field label { font-size: var(--t-5); font-weight: 600; }
.field input, .field textarea, .field select { width: 100%; min-height: var(--tap); padding: 0.75rem 1rem; border: 0; border-radius: 12px; background: var(--surface); }
.field textarea { min-height: 6rem; resize: vertical; }
.field input:focus-visible, .field textarea:focus-visible { outline: 2px solid var(--ink); outline-offset: 0; }
.hint { font-size: var(--t-5); color: var(--muted); }
.check { display: flex; gap: 0.75rem; align-items: flex-start; font-size: var(--t-5); }
.check input { width: 1.25rem; height: 1.25rem; margin-top: 1px; accent-color: var(--ink); flex: none; }

/* entrata delle parti di ogni sezione: titolo, testo, immagine, a 80 ms l'una dall'altra.
   Solo se il movimento è permesso: con «riduci movimento» tutto è già al suo posto. */
@media (prefers-reduced-motion: no-preference) {
  .rise { opacity: 0; transform: translateY(24px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); transition-delay: calc(var(--i, 0) * 80ms); }
  .rise.is-in { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}