/* Stone Mate — manuale utente (sito statico) */
:root {
  --ink: #12202e;
  --ink-soft: #3a4d5f;
  --muted: #5c7084;
  --paper: #f4f7fa;
  --surface: #ffffff;
  --line: #c8d4e0;
  --teal: #1a9b96;
  --teal-deep: #0f6e6a;
  --teal-glow: #5fd4ce;
  --navy: #0b1a2a;
  --navy-mid: #143049;
  --kbd-bg: #e8eef4;
  --tip-bg: #e6f5f4;
  --tip-border: #9ad4d0;
  --font-display: "Bricolage Grotesque", "Segoe UI", sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --max: 72rem;
  --nav-w: 15.5rem;
  --radius: 0.35rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--teal-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--teal);
}

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--navy);
  color: #fff;
  border-radius: var(--radius);
  text-decoration: none;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 1rem;
}

/* —— Site header (after hero) —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1rem;
  padding: 0.65rem 1.25rem;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.4s var(--ease), opacity 0.35s var(--ease);
}

.site-header.is-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.site-header__brand img {
  width: 2rem;
  height: 2rem;
  border-radius: 0.4rem;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius);
  cursor: pointer;
}

.site-header__toc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  justify-content: flex-end;
  margin-left: auto;
  max-width: min(52rem, 70vw);
}

.site-header__toc a {
  font-size: 0.82rem;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
}

.site-header__toc a:hover,
.site-header__toc a[aria-current="true"],
.site-header__toc a[aria-current="page"] {
  color: var(--teal-deep);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex: none;
}

.site-header__download {
  display: inline-flex;
  align-items: center;
  padding: 0.38rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.2;
  color: #06201f;
  background: var(--teal);
  border-radius: var(--radius);
  text-decoration: none;
  white-space: nowrap;
}

.site-header__download:hover {
  color: #06201f;
  background: var(--teal-glow);
}

.to-top {
  position: fixed;
  right: max(0.85rem, env(safe-area-inset-right));
  bottom: max(0.85rem, env(safe-area-inset-bottom));
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  width: auto;
  max-width: calc(100% - 1.7rem);
  padding: 0.42rem 0.72rem;
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--teal-deep);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  box-shadow: 0 6px 16px rgba(18, 32, 46, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(0.35rem);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
}

.to-top svg {
  width: 0.85rem;
  height: 0.85rem;
  flex: none;
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: none;
}

.to-top:hover {
  color: var(--teal-deep);
  border-color: var(--teal);
}

@media (max-width: 560px) {
  .to-top {
    padding: 0.38rem 0.6rem;
    font-size: 0.78rem;
  }
}

body:has(.to-top) .site-footer {
  padding-bottom: 4.5rem;
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #eef6f8;
  background:
    radial-gradient(ellipse 70% 55% at 72% 35%, rgba(95, 212, 206, 0.28) 0%, transparent 58%),
    radial-gradient(ellipse 50% 40% at 18% 70%, rgba(26, 155, 150, 0.18) 0%, transparent 55%),
    linear-gradient(165deg, var(--navy) 0%, var(--navy-mid) 48%, #0e2438 100%);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(95, 212, 206, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(95, 212, 206, 0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 85% 70% at 60% 40%, #000 20%, transparent 75%);
  animation: grid-drift 28s linear infinite;
  pointer-events: none;
}

@keyframes grid-drift {
  from { background-position: 0 0; }
  to { background-position: 48px 48px; }
}

.hero__facet {
  position: absolute;
  width: min(42vw, 28rem);
  height: min(42vw, 28rem);
  right: 8%;
  top: 12%;
  background:
    conic-gradient(from 210deg at 50% 50%,
      transparent 0deg,
      rgba(95, 212, 206, 0.12) 40deg,
      transparent 80deg,
      rgba(26, 155, 150, 0.18) 140deg,
      transparent 200deg,
      rgba(95, 212, 206, 0.1) 280deg,
      transparent 360deg);
  clip-path: polygon(50% 0%, 95% 30%, 78% 95%, 22% 95%, 5% 30%);
  filter: blur(1px);
  animation: facet-pulse 6s ease-in-out infinite;
  pointer-events: none;
}

@keyframes facet-pulse {
  0%, 100% { opacity: 0.55; transform: scale(1) rotate(0deg); }
  50% { opacity: 0.9; transform: scale(1.04) rotate(2deg); }
}

.hero__inner {
  position: relative;
  z-index: 1;
  width: min(100% - 2.5rem, 42rem);
  margin: 0 auto 0 8vw;
  padding: clamp(4.5rem, 7vh, 5.5rem) 0 clamp(3.25rem, 5.5vh, 4rem);
}

.hero__brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0 0 1.75rem;
  animation: rise 0.75s var(--ease) both;
}

.hero__brand img {
  width: clamp(4.5rem, 12vw, 6.5rem);
  height: clamp(4.5rem, 12vw, 6.5rem);
  border-radius: 1.15rem;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.hero__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 4.25rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: #fff;
}

.hero__headline {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  font-weight: 560;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: #d7ecec;
  max-width: 22ch;
  animation: rise 0.75s var(--ease) 0.08s both;
}

.hero__lead {
  margin: 0 0 0.85rem;
  font-size: 1.1rem;
  color: #a8c2cc;
  max-width: 36ch;
  animation: rise 0.75s var(--ease) 0.14s both;
}

.hero__byline {
  margin: 0 0 0.9rem;
  font-size: 0.98rem;
  color: #8aa3b0;
  animation: rise 0.75s var(--ease) 0.17s both;
}

.hero__demo {
  --demo-h: clamp(5.5rem, 28svh, 17rem);
  width: min(100%, calc(var(--demo-h) * 16 / 9));
  margin: 0.1rem 0 1.1rem;
  animation: rise 0.75s var(--ease) 0.18s both;
}

.hero__demo video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  background: #07131f;
  border: 1px solid rgba(95, 212, 206, 0.4);
  border-radius: 0.65rem;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.35);
}

.hero__byline a {
  color: var(--teal-glow);
  text-decoration: none;
  font-weight: 600;
}

.hero__byline a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  animation: rise 0.75s var(--ease) 0.2s both;
}

@keyframes rise {
  from { opacity: 0.35; transform: translateY(0.85rem); }
  to { opacity: 1; transform: translateY(0); }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.btn--primary {
  background: var(--teal);
  color: #06201f;
}

.btn--primary:hover {
  background: var(--teal-glow);
  color: #06201f;
}

.btn--ghost {
  background: transparent;
  color: #dff4f2;
  border-color: rgba(95, 212, 206, 0.45);
}

.btn--ghost:hover {
  border-color: var(--teal-glow);
  color: #fff;
}

.hero__scroll {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  margin: 0;
  transform: translateX(-50%);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(168, 194, 204, 0.7);
  animation: rise-scroll 0.75s var(--ease) 0.45s both;
}

@keyframes rise-scroll {
  from { opacity: 0.35; transform: translateX(-50%) translateY(0.85rem); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* —— Manual layout —— */
.manual {
  display: grid;
  grid-template-columns: var(--nav-w) minmax(0, 1fr);
  gap: 2.5rem;
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

.toc {
  position: sticky;
  top: 4.75rem;
  align-self: start;
  max-height: calc(100svh - 5.5rem);
  overflow: auto;
  padding: 0.25rem 0.5rem 0.25rem 0;
}

.toc__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: toc;
}

.toc li {
  margin: 0;
}

.toc a {
  display: block;
  padding: 0.35rem 0.5rem 0.35rem 0;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  border-left: 2px solid transparent;
  padding-left: 0.65rem;
  transition: color 0.15s, border-color 0.15s;
}

.toc a::before {
  counter-increment: toc;
  content: counter(toc) ". ";
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.toc a:hover,
.toc a[aria-current="true"] {
  color: var(--teal-deep);
  border-left-color: var(--teal);
}

.toc a.toc__video::before {
  content: none;
  counter-increment: none;
}

.content {
  min-width: 0;
}

.intro {
  margin: 0 0 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

.intro h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.intro p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  max-width: 52ch;
}

.intro ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--ink-soft);
}

.intro li {
  margin-bottom: 0.35rem;
}

.manual-video {
  margin-top: 1.75rem;
  scroll-margin-top: 5rem;
}

.manual-video h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.2vw, 1.45rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.manual-video video {
  display: block;
  width: min(100%, 42rem);
  height: auto;
  aspect-ratio: 16 / 9;
  background: var(--navy);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.chapter {
  margin-bottom: 2.75rem;
  padding-top: 0.5rem;
  scroll-margin-top: 5rem;
  opacity: 0;
  transform: translateY(0.75rem);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

.chapter.is-inview {
  opacity: 1;
  transform: none;
}

.chapter__num {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
}

.chapter h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.4vw, 1.65rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.chapter h3 {
  margin: 1.5rem 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 650;
  color: var(--navy-mid);
}

.chapter p,
.chapter li {
  color: var(--ink-soft);
}

.chapter p {
  margin: 0 0 0.85rem;
  max-width: 58ch;
}

.chapter ol,
.chapter ul {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
  max-width: 58ch;
}

.chapter li + li {
  margin-top: 0.3rem;
}

.tip {
  margin: 1rem 0 1.25rem;
  padding: 0.85rem 1rem;
  background: var(--tip-bg);
  border-left: 3px solid var(--teal);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink-soft);
  max-width: 58ch;
}

.tip strong {
  color: var(--teal-deep);
}

/* Screenshot del manuale: le immagini restano dentro la colonna (max-width già su img). */
.shot {
  margin: 1.15rem 0 1.4rem;
}

.shot img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.shot figcaption {
  margin-top: 0.45rem;
  max-width: 62ch;
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--muted);
}

/* Tables */
.table-wrap {
  margin: 1rem 0 1.35rem;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  padding: 0.65rem 0.85rem;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

th {
  background: #eaf1f6;
  color: var(--navy-mid);
  font-weight: 650;
  font-size: 0.88rem;
}

tr:last-child td {
  border-bottom: none;
}

td:first-child {
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

kbd {
  display: inline-block;
  padding: 0.1em 0.4em;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 0.86em;
  background: var(--kbd-bg);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 0.25rem;
  color: var(--ink);
  white-space: nowrap;
}

code {
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 0.9em;
  background: var(--kbd-bg);
  padding: 0.1em 0.35em;
  border-radius: 0.2rem;
}

.toolbar-list {
  display: grid;
  gap: 0.45rem;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
  max-width: 58ch;
}

.toolbar-list li {
  display: grid;
  grid-template-columns: 7.25rem 1fr;
  gap: 0.75rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line);
}

.toolbar-list strong {
  color: var(--teal-deep);
  font-weight: 650;
}

.closing {
  margin-top: 2rem;
  padding: 1.75rem 0 0;
  border-top: 1px solid var(--line);
}

.closing h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.closing ol {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
  color: var(--ink-soft);
}

.closing p {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--teal-deep);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 1.25rem 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  background: #eaf0f5;
}

.site-footer a {
  color: var(--muted);
}

.site-footer__social {
  margin: 0.65rem 0 0;
  font-size: 0.88rem;
}

.site-footer__social a:hover {
  color: var(--teal-deep);
}

/* —— Pitch / product overview —— */
.pitch {
  width: min(100% - 2.5rem, 42rem);
  margin: 0 auto;
  padding: 2.75rem 0 3.5rem;
}

.pitch__block {
  margin: 0 0 2.75rem;
  padding-top: 0.25rem;
}

.pitch__block h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--navy);
}

.pitch__block p {
  margin: 0 0 0.85rem;
  color: var(--ink-soft);
}

.pitch__list,
.pitch__audience {
  margin: 0.5rem 0 1rem;
  padding-left: 1.2rem;
  color: var(--ink-soft);
}

.pitch__list li,
.pitch__audience li {
  margin: 0.45rem 0;
}

.pitch__note {
  margin-top: 1.1rem;
  padding: 0.85rem 1rem;
  background: var(--tip-bg);
  border-left: 3px solid var(--tip-border);
  color: var(--ink);
}

.pitch__video {
  margin-top: 1rem;
}

.pitch__video video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  background: #07131f;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.pitch__block--next {
  margin-bottom: 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--line);
}

.pitch__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.btn--ghost-ink {
  background: transparent;
  color: var(--teal-deep);
  border-color: var(--line);
}

.btn--ghost-ink:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.manual-top {
  position: sticky;
  top: 3.55rem;
  z-index: 40;
  display: flex;
  justify-content: center;
  padding: 0.45rem 1rem;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.manual-top__toc {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem 1rem;
  font-size: 0.9rem;
}

.manual-top__toc a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
}

.manual-top__toc a:hover {
  color: var(--teal-deep);
}

body:has(.manual-top) .manual {
  margin-top: 0;
}

/* Language switcher: fixed so it stays available on the hero and while scrolling. */
.lang-switch {
  position: fixed;
  top: 0.7rem;
  right: 0.7rem;
  z-index: 80;
  display: inline-flex;
  align-items: center;
  gap: 0.1rem;
  padding: 0.15rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  box-shadow: 0 8px 22px rgba(18, 32, 46, 0.16);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.lang-switch a {
  display: inline-flex;
  align-items: center;
  gap: 0.32rem;
  color: var(--muted);
  text-decoration: none;
  padding: 0.28rem 0.5rem;
  border-radius: 999px;
  line-height: 1;
}

.lang-flag {
  display: block;
  height: 0.72rem;
  width: auto;
  flex: none;
  border-radius: 1px;
  box-shadow: inset 0 0 0 1px rgba(18, 32, 46, 0.28);
}

.site-header {
  padding-right: 11rem;
}

.lang-switch a:hover {
  color: var(--teal-deep);
}

.lang-switch a[aria-current="page"] {
  color: #06201f;
  background: var(--teal);
}

@media (max-width: 560px) {
  .site-header {
    padding-right: 9.2rem;
  }

  .lang-switch {
    top: 0.45rem;
    right: 0.4rem;
  }
}

/* —— Responsive —— */
@media (max-width: 900px) {
  .manual {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .toc {
    position: static;
    max-height: none;
    padding: 0;
    margin-bottom: 0.5rem;
  }

  .toc ol {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.15rem 1rem;
  }

  .site-header__toc {
    display: none;
    margin-left: 0;
  }

  .site-header__actions {
    margin-left: auto;
  }

  .site-header:has(.site-header__download) {
    align-items: flex-start;
    min-height: 5rem;
    padding-top: 0.55rem;
  }

  .site-header:has(.site-header__download) .site-header__brand,
  .site-header:has(.site-header__download) .site-header__actions {
    flex: none;
    margin-top: 0.15rem;
  }

  .site-header__download {
    position: absolute;
    top: 2.8rem;
    right: 0.7rem;
    z-index: 2;
  }

  @media (max-width: 560px) {
    .site-header__download {
      top: 2.55rem;
      right: 0.4rem;
    }
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-header--static {
    flex-wrap: wrap;
    align-items: center;
    row-gap: 0.45rem;
  }

  .site-header--static .site-header__toc {
    display: flex;
    position: static;
    order: 3;
    flex: 1 1 100%;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: flex-start;
    max-width: none;
    margin-left: 0;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
    overflow: visible;
  }

  .site-header.is-menu-open .site-header__toc {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    flex-wrap: nowrap;
    max-width: none;
    max-height: 70svh;
    overflow: auto;
    padding: 0.75rem 1.25rem 1rem;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(18, 32, 46, 0.08);
  }

  .hero__inner {
    margin-left: auto;
    margin-right: auto;
    width: min(100% - 2rem, 36rem);
    padding-top: clamp(4.25rem, 8vh, 5rem);
    text-align: left;
  }

  .hero__facet {
    opacity: 0.45;
    right: -8%;
    top: 0;
  }
}

@media (max-width: 560px) {
  .toc ol {
    grid-template-columns: 1fr;
  }

  .toolbar-list li {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  td:first-child {
    white-space: normal;
  }

  .hero__brand {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Schermi bassi: la demo resta visibile e i pulsanti non escono dalla prima schermata. */
@media (max-height: 740px) {
  .hero__inner {
    padding-top: 4.15rem;
    padding-bottom: 3.5rem;
  }

  .hero__brand {
    flex-direction: row;
    align-items: center;
    margin-bottom: 0.65rem;
  }

  .hero__brand img {
    width: 3.15rem;
    height: 3.15rem;
  }

  .hero__name {
    font-size: clamp(1.65rem, 7vw, 2.15rem);
  }

  .hero__headline {
    font-size: 1.2rem;
    margin-bottom: 0.35rem;
  }

  .hero__lead {
    font-size: 0.98rem;
    margin-bottom: 0.4rem;
  }

  .hero__byline {
    margin-bottom: 0.55rem;
  }

  .hero__demo {
    --demo-h: 12.5rem;
    margin-bottom: 0.7rem;
  }
}

@media (max-height: 740px) and (min-width: 800px) {
  .hero__demo {
    --demo-h: 11rem;
  }
}

/* —— Download page —— */
.site-header--static {
  transform: none;
  opacity: 1;
  pointer-events: auto;
  position: sticky;
}

.page-download {
  background:
    radial-gradient(ellipse 70% 40% at 0% 0%, rgba(95, 212, 206, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse 50% 35% at 100% 10%, rgba(26, 155, 150, 0.08) 0%, transparent 50%),
    var(--paper);
}

.download {
  width: min(100% - 2rem, 44rem);
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

.download__intro {
  margin-bottom: 2.25rem;
}

.download__eyebrow {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
}

.download__intro h1 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.download__lead {
  margin: 0;
  color: var(--ink-soft);
  max-width: 40ch;
  font-size: 1.08rem;
}

.download__terms {
  margin-bottom: 1.35rem;
}

.download__packages {
  margin-bottom: 2.5rem;
}

.download__terms h2,
.download__packages h2 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.download__terms h2 {
  margin-bottom: 0.55rem;
  font-size: 1.15rem;
}

.download__terms-full {
  margin-top: 0.7rem;
}

.download__terms-full summary {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  max-width: 100%;
  cursor: pointer;
  font-weight: 650;
  color: var(--teal-deep);
  font-size: 0.95rem;
}

.download__terms-full summary:hover {
  color: var(--teal);
}

.download__terms-full .download__terms-note {
  margin-top: 0.85rem;
}

.download__terms-full .legal {
  max-height: none;
  overflow: visible;
  margin-bottom: 0;
}

.download__consent {
  margin: 0 0 0.85rem;
  color: var(--ink-soft);
  font-size: 0.98rem;
  line-height: 1.45;
}

.download__terms-note,
.download__hint,
.download__after {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.download__watch {
  margin: 0 0 0.85rem;
  font-size: 0.98rem;
}

.download__intro .download__watch {
  margin-top: 0.85rem;
  margin-bottom: 0;
}

.legal {
  max-height: min(28rem, 55svh);
  overflow: auto;
  padding: 1.15rem 1.25rem;
  margin-bottom: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  scroll-behavior: smooth;
}

.legal h3 {
  margin: 1.15rem 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--navy-mid);
}

.legal h3:first-child {
  margin-top: 0;
}

.legal p {
  margin: 0 0 0.65rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.5;
}

.download__accept {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.7rem;
  align-items: start;
  margin: 0;
  padding: 0.75rem 0.9rem;
  background: var(--tip-bg);
  border-left: 3px solid var(--teal);
  border-radius: 0 var(--radius) var(--radius) 0;
  cursor: pointer;
  color: var(--ink);
  font-size: 0.95rem;
  line-height: 1.4;
}

.download__accept input {
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.15rem;
  accent-color: var(--teal-deep);
}

.download__version-title {
  margin: 1.75rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--navy-mid);
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.download__version-title:first-of-type {
  margin-top: 1.15rem;
}

.download__badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--teal-deep);
  background: color-mix(in srgb, var(--teal) 16%, transparent);
  border-radius: 999px;
}

.download__badge--previous {
  color: var(--muted);
  background: var(--kbd-bg);
}

.download__btn--previous {
  background: transparent;
  color: var(--teal-deep);
  border-color: var(--line);
}

.download__btn--previous:hover {
  background: var(--tip-bg);
  color: var(--teal-deep);
  border-color: var(--teal);
}

.download__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.download__card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.download__card h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.download__card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.download__btn.is-disabled,
.download__btn[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
  cursor: not-allowed;
}

.download__support {
  --kofi: #ff5e5b;
  --kofi-ink: #2a1210;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-start;
  gap: 0.75rem 1rem;
  margin: 1.6rem 0 0.25rem;
  padding: 0.9rem 1.05rem;
  background: #fff4f1;
  border: 1px solid #f3c7c0;
  border-left: 3px solid var(--kofi);
  border-radius: var(--radius);
}

.download__support-copy {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  flex: 1 1 auto;
  min-width: 0;
}

.download__support-mark {
  width: 2.15rem;
  height: 2.15rem;
  flex: none;
  margin-top: 0.05rem;
  padding: 0.38rem;
  color: #d44842;
  background: color-mix(in srgb, var(--kofi) 18%, white);
  border-radius: 999px;
}

.download__support p {
  margin: 0;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.45;
}

.download__support-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  flex: 0 0 auto;
  align-self: center;
  width: auto;
  max-width: 100%;
  padding: 0.55rem 0.95rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  color: var(--kofi-ink);
  background: var(--kofi);
  border: 1px solid #e14e4b;
  border-radius: var(--radius);
}

.download__support-link:hover {
  color: var(--kofi-ink);
  background: #ff4d49;
  border-color: #d94340;
}

.download__support-icon {
  width: 1.05rem;
  height: 1.05rem;
  flex: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.download__winhelp {
  margin-top: 1.75rem;
  padding: 1.15rem 1.25rem;
  background: var(--tip-bg);
  border: 1px solid var(--tip-border);
  border-left: 3px solid var(--teal);
  border-radius: var(--radius);
}

.download__winhelp h3 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.08rem;
  color: var(--navy-mid);
}

.download__winhelp p,
.download__winhelp li {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.download__winhelp p {
  margin: 0 0 0.7rem;
}

.download__winhelp ol {
  margin: 0 0 0.85rem;
  padding-left: 1.25rem;
}

.download__winhelp ul {
  margin: 0.35rem 0 0.5rem;
  padding-left: 1.15rem;
}

.download__winhelp li + li {
  margin-top: 0.35rem;
}

@media (max-width: 560px) {
  .download__card {
    flex-direction: column;
    align-items: stretch;
  }

  .download__btn {
    width: 100%;
  }

  .download__support {
    flex-direction: column;
    align-items: flex-start;
  }

  .download__support-copy {
    flex: none;
    width: 100%;
  }

  .download__support-link {
    width: auto;
    align-self: flex-start;
  }
}

/* —— Novità / What's new —— */
.page-news {
  background:
    radial-gradient(ellipse 70% 40% at 0% 0%, rgba(95, 212, 206, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse 50% 35% at 100% 10%, rgba(26, 155, 150, 0.08) 0%, transparent 50%),
    var(--paper);
}

.news {
  width: min(100% - 2rem, 44rem);
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

.news__intro {
  margin-bottom: 1.5rem;
}

.news__intro h1 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.news__lead {
  margin: 0 0 1.1rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.news__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.news__jump a {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--teal-deep);
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
}

.news__jump a:hover {
  border-color: var(--teal);
}

.news__version {
  margin-top: 2.15rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
}

.news__version h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.65rem;
  letter-spacing: -0.03em;
}

.news__date {
  margin: 0.3rem 0 0.2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.news__version h3 {
  margin: 1.35rem 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--teal-deep);
}

.news__version p,
.news__version li {
  color: var(--ink-soft);
}

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

.news__version li + li {
  margin-top: 0.5rem;
}

.news__principle {
  display: block;
  margin-top: 0.65rem;
  padding: 0.75rem 0.9rem;
  border-left: 3px solid var(--teal);
  background: color-mix(in srgb, var(--teal) 12%, var(--surface));
  color: var(--ink);
}

/* —— Chi sono / Petra Studio —— */
.page-about {
  --petra-deep: #2a1410;
  --petra-rock: #8b3d2a;
  --petra-sand: #c47a4a;
  --petra-blush: #e8a67a;
  --petra-dusk: #1a2438;
  background:
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(196, 122, 74, 0.12) 0%, transparent 55%),
    var(--paper);
}

.about-hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #f6ebe3;
  background: var(--petra-deep);
}

.about-hero__art {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.about-hero__sky {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 45% at 72% 18%, rgba(232, 166, 122, 0.45) 0%, transparent 60%),
    radial-gradient(ellipse 40% 35% at 30% 8%, rgba(255, 196, 140, 0.2) 0%, transparent 55%),
    linear-gradient(180deg, #3d2a3a 0%, #5c3a2e 28%, #8b4a32 52%, #6b3224 78%, #2a1410 100%);
}

.about-hero__canyon {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(98deg, rgba(26, 12, 10, 0.92) 0%, rgba(26, 12, 10, 0.55) 38%, transparent 58%),
    linear-gradient(to top, rgba(20, 10, 8, 0.9) 0%, transparent 38%);
}

.about-hero__strata {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background:
    repeating-linear-gradient(
      184deg,
      transparent 0 11px,
      rgba(255, 210, 170, 0.07) 11px 12px,
      transparent 12px 23px,
      rgba(90, 30, 18, 0.12) 23px 24px
    );
  mask-image: linear-gradient(90deg, transparent 0%, #000 35%, #000 100%);
  animation: petra-strata 40s linear infinite;
}

.about-hero__siq {
  position: absolute;
  right: 0;
  top: 0;
  width: min(58vw, 42rem);
  height: 100%;
  background:
    linear-gradient(90deg, transparent 0%, rgba(42, 20, 16, 0.35) 18%, rgba(42, 20, 16, 0.55) 100%);
  clip-path: polygon(18% 0%, 100% 0%, 100% 100%, 0% 100%, 28% 62%, 22% 38%);
  opacity: 0.55;
}

.about-hero__facade {
  position: absolute;
  right: max(4vw, 1.5rem);
  top: 12%;
  width: min(38vw, 22rem);
  height: min(68svh, 34rem);
  border: 1px solid rgba(255, 220, 180, 0.22);
  border-radius: 48% 48% 6% 6% / 28% 28% 4% 4%;
  background:
    linear-gradient(180deg, rgba(232, 166, 122, 0.18) 0%, rgba(139, 61, 42, 0.35) 45%, rgba(42, 20, 16, 0.55) 100%);
  box-shadow:
    inset 0 0 0 1px rgba(255, 230, 200, 0.08),
    0 0 60px rgba(232, 166, 122, 0.12);
  animation: petra-facade 8s ease-in-out infinite;
}

.about-hero__arch {
  position: absolute;
  left: 18%;
  right: 18%;
  top: 28%;
  height: 42%;
  border: 1px solid rgba(255, 220, 180, 0.28);
  border-bottom: none;
  border-radius: 50% 50% 0 0 / 70% 70% 0 0;
  background: linear-gradient(180deg, rgba(26, 36, 56, 0.55) 0%, rgba(42, 20, 16, 0.25) 100%);
}

.about-hero__columns {
  position: absolute;
  left: 22%;
  right: 22%;
  bottom: 12%;
  top: 55%;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0 12%,
      rgba(255, 220, 180, 0.2) 12% 14%,
      transparent 14% 28%
    );
  opacity: 0.7;
}

.about-hero__urn {
  position: absolute;
  left: 50%;
  top: 8%;
  width: 14%;
  height: 14%;
  translate: -50% 0;
  border: 1px solid rgba(255, 220, 180, 0.35);
  border-radius: 40% 40% 30% 30%;
  background: rgba(232, 166, 122, 0.2);
}

.about-hero__dust {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 60% 40%, rgba(255, 210, 160, 0.12) 0%, transparent 28%),
    radial-gradient(circle at 75% 70%, rgba(196, 122, 74, 0.1) 0%, transparent 22%);
  animation: petra-dust 12s ease-in-out infinite alternate;
}

.about-hero__inner {
  position: relative;
  z-index: 1;
  width: min(100% - 2.5rem, 36rem);
  margin: 0 auto 0 8vw;
  padding: 5rem 0 3.75rem;
}

.about-hero__brand {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 3.85rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
  color: #fff7ef;
  animation: rise 0.75s var(--ease) both;
}

.about-hero__lead {
  margin: 0 0 1.75rem;
  font-size: 1.1rem;
  color: rgba(246, 235, 227, 0.82);
  max-width: 34ch;
  animation: rise 0.75s var(--ease) 0.08s both;
}

.about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  animation: rise 0.75s var(--ease) 0.14s both;
}

.about-hero .btn--primary {
  background: var(--petra-sand);
  color: #2a1410;
}

.about-hero .btn--primary:hover {
  background: var(--petra-blush);
  color: #2a1410;
}

.about-hero .btn--ghost {
  border-color: rgba(255, 230, 200, 0.45);
  color: #fff7ef;
}

.about-hero .btn--ghost:hover {
  border-color: var(--petra-blush);
  color: #fff;
}

@keyframes petra-strata {
  from { background-position: 0 0; }
  to { background-position: 0 120px; }
}

@keyframes petra-facade {
  0%, 100% { opacity: 0.85; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(-0.4rem); }
}

@keyframes petra-dust {
  from { opacity: 0.55; transform: translateY(0); }
  to { opacity: 0.95; transform: translateY(-0.6rem); }
}

.about {
  width: min(100% - 2rem, 44rem);
  margin: 0 auto;
  padding: 2.75rem 0 4rem;
}

.about__block {
  margin-bottom: 2.5rem;
  animation: rise 0.7s var(--ease) both;
}

.about__block:nth-of-type(2) { animation-delay: 0.06s; }
.about__block:nth-of-type(3) { animation-delay: 0.12s; }

.about__block--intro {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 1.5rem;
  align-items: start;
}

.about__portrait {
  width: 8.5rem;
  height: 10.5rem;
  object-fit: cover;
  object-position: center 15%;
  border-radius: 0.35rem;
  box-shadow: 0 12px 28px rgba(42, 20, 16, 0.18);
}

.about__block h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}

.about__block p {
  margin: 0 0 0.85rem;
  color: var(--ink-soft);
  max-width: 42ch;
}

.about__block p:last-child {
  margin-bottom: 0;
}

.about__aside {
  color: var(--muted) !important;
  font-size: 0.98rem;
}

@media (max-width: 720px) {
  .about-hero__inner {
    margin-left: auto;
    margin-right: auto;
    width: min(100% - 2rem, 36rem);
  }

  .about-hero__facade {
    width: min(52vw, 16rem);
    opacity: 0.75;
  }

  .about__block--intro {
    grid-template-columns: 1fr;
  }

  .about__portrait {
    width: 7rem;
    height: 8.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__grid,
  .hero__facet,
  .hero__brand,
  .hero__headline,
  .hero__lead,
  .hero__byline,
  .hero__demo,
  .hero__cta,
  .hero__scroll,
  .about-hero__strata,
  .about-hero__facade,
  .about-hero__dust,
  .about-hero__brand,
  .about-hero__lead,
  .about-hero__cta,
  .about__block {
    animation: none;
    opacity: 1;
  }
  .chapter {
    opacity: 1;
    transform: none;
    transition: none;
  }
}