/* ======================================================================
   Academy della Sicurezza — main.css
   Iterazione 3.5: direzione estetica "Editorial × Blueprint Tecnico".
   Font Inter mantenuto per scelta del committente (parentela SollertIA Skills).
   Distintività via composizione, atmosfera, scala tipografica audace,
   pattern SVG, micro-animazioni.

   TOC:
   01. TOKENS (variabili)
   02. RESET & BASE
   03. TIPOGRAFIA
   04. LAYOUT (container, header, footer)
   05. COMPONENTI (eyebrow, section-number, btn, card, link, monogram)
   06. HERO (home + sezione)
   07. HOME: triangolo, aree, CTA
   08. LISTE (eccellenze / sinergie / ricerca)
   09. DETTAGLIO (tipografia editoriale, dropcap)
   10. CHI SIAMO (manifesto, team)
   11. CONTATTI (form editoriale)
   12. ANIMAZIONI (reveal, flow, shrink header)
   13. RESPONSIVE
   14. REDUCED MOTION
   ====================================================================== */

/* ---------- 01. TOKENS ---------- */
:root {
  /* Famiglia navy */
  --ink:          #0A0F1E;
  --navy-deep:    #0F1A2F;
  --navy:         #1A2744;
  --navy-soft:    #243656;
  --navy-fog:     #3B4A6B;

  /* Accent */
  --accent:       #F97316;
  --accent-dark:  #C2410C;
  --accent-soft:  #FFEDD5;
  --accent-paper: #FFF7ED;

  /* Azure (dosi ridotte) */
  --azure:        #00B4D8;
  --azure-soft:   #E0F7FB;

  /* Superfici */
  --paper:        #FFFFFF;
  --paper-warm:   #FAF7F2;   /* crema editoriale */
  --paper-cool:   #F4F7FB;
  --line:         #E2E8F0;
  --line-strong:  #CBD5E1;
  --muted:        #64748B;
  --muted-dark:   #475569;

  /* Alias legacy (non rompere) */
  --color-primary:   var(--navy);
  --color-accent:    var(--accent);
  --color-secondary: var(--azure);
  --color-text:      var(--navy);
  --color-text-muted:var(--muted-dark);
  --color-bg:        var(--paper);
  --color-bg-alt:    var(--paper-cool);
  --color-border:    var(--line);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: ui-monospace, 'SF Mono', 'Menlo', 'Consolas', monospace;

  /* Scale */
  --fs-display: clamp(3rem, 7.5vw, 6.5rem);
  --fs-display-lg: clamp(3.5rem, 9vw, 8rem);
  --fs-h1:      clamp(2.2rem, 4.2vw, 3.4rem);
  --fs-h2:      clamp(1.7rem, 2.9vw, 2.4rem);
  --fs-h3:      1.3rem;
  --fs-body:    1rem;
  --fs-body-lg: 1.0625rem;
  --fs-read:    1.125rem;
  --fs-sm:      0.875rem;
  --fs-xs:      0.78rem;
  --fs-eyebrow: 0.72rem;

  --lh-display: 0.95;
  --lh-h:       1.12;
  --lh-body:    1.6;
  --lh-read:    1.75;

  --tr-display: -0.045em;
  --tr-h:       -0.02em;
  --tr-eyebrow: 0.22em;

  /* Spacing */
  --s-1: 0.25rem;   --s-2: 0.5rem;    --s-3: 0.75rem;
  --s-4: 1rem;      --s-5: 1.25rem;   --s-6: 1.5rem;
  --s-8: 2rem;      --s-10: 2.5rem;   --s-12: 3rem;
  --s-16: 4rem;     --s-20: 5rem;     --s-24: 6rem;
  --s-32: 8rem;     --s-40: 10rem;

  /* Radius */
  --radius:      6px;
  --radius-lg:   14px;
  --radius-xl:   22px;

  /* Layout */
  --container-max: 1240px;
  --container-narrow: 740px;
  --container-reading: 680px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(10 15 30 / 0.04);
  --shadow:    0 8px 30px -12px rgb(10 15 30 / 0.18), 0 2px 6px -2px rgb(10 15 30 / 0.06);
  --shadow-lg: 0 30px 80px -20px rgb(10 15 30 / 0.30), 0 6px 18px -6px rgb(10 15 30 / 0.12);

  /* Patterns */
  --pat-grid:       url('../img/pattern/blueprint-grid.svg');
  --pat-grid-light: url('../img/pattern/blueprint-grid-light.svg');
  --pat-noise:      url('../img/pattern/noise.svg');

  --easing: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 02. RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body-lg);
  line-height: var(--lh-body);
  color: var(--navy);
  background: var(--paper);
  font-feature-settings: 'ss01' on, 'cv11' on;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .18s var(--easing); }
main { display: block; }
::selection { background: var(--accent); color: #fff; }

/* ---------- 03. TIPOGRAFIA ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: var(--ink);
  margin: 0 0 var(--s-4);
  line-height: var(--lh-h);
  font-weight: 800;
  letter-spacing: var(--tr-h);
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); font-weight: 700; }
p  { margin: 0 0 var(--s-4); }

.display {
  font-size: var(--fs-display);
  font-weight: 900;
  letter-spacing: var(--tr-display);
  line-height: var(--lh-display);
  color: var(--ink);
}
.display--lg { font-size: var(--fs-display-lg); }
.display em {
  font-style: normal;
  color: var(--accent);
  position: relative;
  white-space: nowrap;
}
.display .mark {
  background: linear-gradient(180deg, transparent 0 58%, rgba(249,115,22,0.32) 58% 92%, transparent 92%);
  padding: 0 0.08em;
}

/* Inline marcatura editoriale */
.highlight {
  background: var(--accent);
  color: #fff;
  padding: 0.04em 0.28em;
  font-weight: 800;
  display: inline-block;
  transform: skewX(-4deg);
}
.highlight > * { display: inline-block; transform: skewX(4deg); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--accent);
}
.eyebrow--navy { color: var(--navy); }
.eyebrow--navy::before { background: var(--navy); }
.eyebrow--light { color: var(--accent); }
.eyebrow--light::before { background: var(--accent); }

.section-number {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: var(--tr-eyebrow);
  color: var(--muted);
  text-transform: uppercase;
}

.lead {
  font-size: var(--fs-read);
  line-height: var(--lh-read);
  color: var(--muted-dark);
  max-width: 58ch;
}
.lead--light { color: rgba(255,255,255,0.82); }

/* ---------- 04. LAYOUT ---------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--s-6);
  width: 100%;
}
.container--narrow { max-width: var(--container-narrow); }
.container--reading { max-width: var(--container-reading); }

.section {
  padding: var(--s-20) 0;
  position: relative;
}
.section--tight { padding: var(--s-16) 0; }
.section--wide { padding: var(--s-24) 0; }
.section--paper { background: var(--paper); }
.section--warm { background: var(--paper-warm); }
.section--cool { background: var(--paper-cool); }
.section--ink {
  background: var(--ink);
  color: rgba(255,255,255,0.82);
}
.section--ink h1, .section--ink h2, .section--ink h3 { color: #fff; }

.section__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--s-4);
  margin-bottom: var(--s-10);
  align-items: end;
}
@media (min-width: 900px) {
  .section__head--split {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: var(--s-16);
  }
}
.section__head h2 { margin: 0; }

.divider-rule {
  display: flex;
  align-items: center;
  gap: var(--s-4);
  margin: 0 0 var(--s-6);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--muted);
}
.divider-rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line-strong);
}

/* ---------- 05. COMPONENTI ---------- */

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255,255,255,0.94);
  backdrop-filter: saturate(1.2) blur(8px);
  -webkit-backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--easing), background .25s var(--easing), padding .25s var(--easing);
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(255,255,255,0.98);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-6);
  padding-block: var(--s-5);
  transition: padding .25s var(--easing);
}
.site-header.is-scrolled .site-header__inner { padding-block: var(--s-3); }

.site-header__logo { display: inline-flex; align-items: center; gap: var(--s-3); }
.site-header__logo img { height: 40px; width: auto; transition: height .25s var(--easing); }
.site-header.is-scrolled .site-header__logo img { height: 32px; }

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--s-8);
  align-items: center;
}
.site-nav a {
  position: relative;
  color: var(--navy);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.15rem 0;
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  transition: color .18s var(--easing);
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -4px;
  height: 2px;
  background: var(--accent);
  transition: right .22s var(--easing);
}
.site-nav a:hover::after { right: 0; }
.site-nav a.is-active { color: var(--ink); font-weight: 600; }
.site-nav a.is-active::after { right: 0; }
.site-nav__num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  font-weight: 500;
}

.site-header__toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--s-2) var(--s-3);
  font-size: 1.1rem;
  color: var(--navy);
  cursor: pointer;
  line-height: 1;
}

/* Monogram */
.monogram {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: currentColor;
}
.monogram svg { width: 28px; height: 28px; }

/* Buttons */
.btn {
  --btn-bg: var(--accent);
  --btn-fg: #fff;
  --btn-border: transparent;
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  padding: 0.95rem 1.5rem;
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius);
  cursor: pointer;
  line-height: 1;
  text-align: center;
  transition: transform .18s var(--easing), background .18s var(--easing), color .18s var(--easing), border-color .18s var(--easing), box-shadow .18s var(--easing);
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: "→";
  font-family: var(--font-mono);
  font-weight: 500;
  transition: transform .25s var(--easing);
}
.btn:hover::after { transform: translateX(4px); }
.btn--accent:hover { background: var(--accent-dark); }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--ink); --btn-border: var(--line-strong); }
.btn--ghost:hover { --btn-bg: var(--ink); --btn-fg: #fff; --btn-border: var(--ink); }
.btn--light { --btn-bg: #fff; --btn-fg: var(--ink); }
.btn--light:hover { --btn-bg: var(--paper-warm); }
.btn--outline-light {
  --btn-bg: transparent;
  --btn-fg: #fff;
  --btn-border: rgba(255,255,255,0.35);
}
.btn--outline-light:hover { --btn-bg: rgba(255,255,255,0.08); --btn-border: #fff; }
.btn--outline {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-border: var(--line-strong);
}
.btn--outline:hover { --btn-bg: var(--ink); --btn-fg: #fff; --btn-border: var(--ink); }
.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}
.btn--lg { padding: 1.1rem 1.9rem; font-size: 1rem; }

/* Inline link (text) */
.ilink {
  font-weight: 600;
  color: var(--ink);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding-bottom: 2px;
}
.ilink::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  transform-origin: left;
  transform: scaleX(0.35);
  transition: transform .28s var(--easing);
}
.ilink:hover::after { transform: scaleX(1); }
.ilink .arrow {
  font-family: var(--font-mono);
  transition: transform .25s var(--easing);
}
.ilink:hover .arrow { transform: translateX(4px); }

/* Tag pills */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 0.3rem 0.6rem;
  background: var(--accent-paper);
  border-radius: 3px;
}
.tag--navy { color: #fff; background: var(--navy); }
.tag--azure { color: var(--navy); background: var(--azure-soft); }
.tag--ghost { color: var(--muted); background: transparent; border: 1px solid var(--line); }

/* ---------- 06. HERO ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #fff;
  padding: var(--s-24) 0 var(--s-20);
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--pat-grid-light);
  background-size: 80px 80px;
  opacity: 1;
  z-index: 0;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 80% at 80% 10%, rgba(0,180,216,0.18) 0%, transparent 70%),
              radial-gradient(50% 60% at 15% 90%, rgba(249,115,22,0.22) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}
.hero > * { position: relative; z-index: 1; }
.hero__inner { position: relative; }
.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-6);
  align-items: center;
  margin-bottom: var(--s-10);
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
}
.hero__meta .dot {
  display: inline-block;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  margin-right: var(--s-3);
  box-shadow: 0 0 0 6px rgba(249,115,22,0.22);
  animation: pulseDot 2.6s var(--easing) infinite;
}

.hero__title {
  color: #fff;
  font-weight: 900;
  font-size: var(--fs-display-lg);
  letter-spacing: var(--tr-display);
  line-height: var(--lh-display);
  margin: 0;
}
.hero__title em {
  font-style: normal;
  color: var(--accent);
}
.hero__title .word-offset {
  display: inline-block;
  padding-left: 0.8em;
}
.hero__tagline {
  margin-top: var(--s-8);
  font-size: clamp(1.1rem, 1.5vw, 1.35rem);
  line-height: 1.55;
  color: rgba(255,255,255,0.78);
  max-width: 56ch;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
  margin-top: var(--s-10);
}
.hero__coord {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.35);
  text-transform: uppercase;
}
.hero__coord--tr { top: var(--s-8); right: var(--s-6); text-align: right; }
.hero__coord--bl { bottom: var(--s-6); left: var(--s-6); }
.hero__coord::before {
  content: "+";
  display: inline-block;
  margin-right: 6px;
  color: var(--accent);
}

/* Hero di sezione (pagine non-home) */
.hero--section {
  padding: var(--s-20) 0 var(--s-16);
}
.hero--section .hero__title {
  font-size: clamp(2.5rem, 6vw, 4.8rem);
}

/* ---------- 07. HOME ---------- */

/* Intro grid sotto hero: payoff + indice sezioni */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-10);
  align-items: start;
}
@media (min-width: 900px) {
  .intro-grid { grid-template-columns: 1.4fr 1fr; gap: var(--s-16); }
}
.intro-grid__body p {
  font-size: var(--fs-read);
  line-height: var(--lh-read);
  color: var(--muted-dark);
}
.intro-grid__body p:first-child::first-letter {
  font-size: 4.8rem;
  font-weight: 900;
  float: left;
  line-height: 0.85;
  color: var(--accent);
  padding: 0.2rem 0.6rem 0 0;
  margin-top: 0.3rem;
}

.toc {
  border-top: 1px solid var(--line-strong);
  padding-top: var(--s-4);
}
.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--s-2);
}
.toc li {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: baseline;
  padding: var(--s-4) 0;
  border-bottom: 1px solid var(--line);
  gap: var(--s-4);
}
.toc li .n {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--muted);
  letter-spacing: 0.1em;
}
.toc li .label {
  font-weight: 600;
  color: var(--ink);
  font-size: 1.05rem;
}
.toc li .meta {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.toc a:hover .label { color: var(--accent); }

/* Area cards (editorial layout asimmetrico) */
.areas {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-6);
}
@media (min-width: 900px) {
  .areas {
    grid-template-columns: 1.2fr 1fr 1fr;
    grid-template-rows: auto;
  }
  .areas > :first-child {
    grid-row: span 1;
  }
}

.area-card {
  --fg: var(--ink);
  --bg: var(--paper);
  --line-c: var(--line);
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--line-c);
  padding: var(--s-8) var(--s-6) var(--s-6);
  position: relative;
  overflow: hidden;
  transition: transform .35s var(--easing), border-color .25s var(--easing), background .35s var(--easing);
  display: flex;
  flex-direction: column;
  min-height: 320px;
}
.area-card:hover { transform: translateY(-6px); border-color: var(--ink); }
.area-card__n {
  font-family: var(--font-mono);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-strong);
  letter-spacing: -0.04em;
  line-height: 0.85;
  position: absolute;
  top: var(--s-4); right: var(--s-6);
  opacity: 0.9;
  transition: -webkit-text-stroke-color .35s var(--easing);
  pointer-events: none;
}
.area-card:hover .area-card__n { -webkit-text-stroke-color: var(--accent); }
.area-card__mark {
  width: 56px; height: 56px;
  color: var(--accent);
  margin-bottom: var(--s-8);
}
.area-card__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--s-2);
}
.area-card h3 {
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 var(--s-4);
  max-width: 16ch;
}
.area-card p {
  color: var(--muted-dark);
  font-size: 0.98rem;
  line-height: 1.55;
  flex: 1;
}
.area-card .ilink { margin-top: var(--s-4); }
.area-card--primary {
  --fg: #fff;
  --bg: var(--ink);
  --line-c: var(--ink);
  color: #fff;
}
.area-card--primary h3 { color: #fff; }
.area-card--primary p { color: rgba(255,255,255,0.72); }
.area-card--primary .area-card__mark { color: var(--accent); }
.area-card--primary .area-card__n {
  -webkit-text-stroke-color: rgba(255,255,255,0.25);
}
.area-card--primary:hover .area-card__n {
  -webkit-text-stroke-color: var(--accent);
}
.area-card--primary .ilink { color: #fff; }
.area-card--primary .ilink::after { background: var(--accent); }

/* Triangolo wrapper */
.triangle-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-12);
  align-items: center;
}
@media (min-width: 980px) {
  .triangle-block { grid-template-columns: 1.1fr 1fr; gap: var(--s-20); }
  .triangle-block--center { grid-template-columns: 1fr; }
}
.triangle-block--center .triangle-block__visual {
  max-width: 760px;
  margin-inline: auto;
}
.triangle-block__visual {
  position: relative;
  padding: var(--s-4);
}
.triangle-svg { width: 100%; height: auto; max-width: 640px; margin-inline: auto; display: block; }
.triangle-svg__flow line {
  animation: flow 2.2s linear infinite;
}
.triangle-svg__flow line:nth-child(2) { animation-delay: 0.5s; }
.triangle-svg__flow line:nth-child(3) { animation-delay: 1s; }

.triangle-list {
  display: grid;
  gap: var(--s-5);
}
.triangle-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--s-5);
  padding: var(--s-5) 0;
  border-top: 1px solid var(--line);
}
.triangle-list__item:last-child { border-bottom: 1px solid var(--line); }
.triangle-list__num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.12em;
  font-size: var(--fs-sm);
  padding-top: 2px;
}
.triangle-list__item h4 {
  margin: 0 0 var(--s-2);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.triangle-list__item .role {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--tr-eyebrow);
  color: var(--muted);
  margin-bottom: var(--s-2);
}
.triangle-list__item p { color: var(--muted-dark); font-size: 0.98rem; margin: 0; }

/* CTA "timbro" */
.stamp {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #fff;
  padding: var(--s-16) var(--s-10);
  border-radius: var(--radius-lg);
  margin: var(--s-16) 0 0;
  isolation: isolate;
}
.stamp::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--pat-grid-light);
  background-size: 80px 80px;
  opacity: 0.9;
  z-index: 0;
}
.stamp::after {
  content: "";
  position: absolute;
  right: -80px; bottom: -80px;
  width: 360px; height: 360px;
  background: radial-gradient(circle, rgba(249,115,22,0.32) 0%, transparent 70%);
  z-index: 0;
}
.stamp > * { position: relative; z-index: 1; }
.stamp__grid {
  display: grid;
  gap: var(--s-8);
  align-items: end;
}
@media (min-width: 900px) {
  .stamp__grid { grid-template-columns: 1.5fr 1fr; gap: var(--s-16); }
}
.stamp h2 {
  color: #fff;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  letter-spacing: var(--tr-display);
  line-height: 1.04;
  margin: var(--s-5) 0 0;
}
.stamp h2 em { font-style: normal; color: var(--accent); }
.stamp__caption {
  color: rgba(255,255,255,0.75);
  font-size: 1rem;
  margin-top: var(--s-6);
  max-width: 42ch;
}
.stamp__actions {
  display: flex;
  gap: var(--s-4);
  flex-wrap: wrap;
  align-items: center;
}

/* ---------- 08. LISTE ---------- */

.list-head {
  display: grid;
  gap: var(--s-4);
  margin-bottom: var(--s-12);
}
@media (min-width: 900px) {
  .list-head {
    grid-template-columns: 2fr 1fr;
    align-items: end;
    gap: var(--s-16);
  }
}
.list-head__count {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--muted);
  border-top: 1px solid var(--line-strong);
  padding-top: var(--s-4);
  text-align: left;
}
@media (min-width: 900px) { .list-head__count { text-align: right; } }

.entry-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.entry-list article {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--s-6);
  padding: var(--s-8) 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: background .25s var(--easing);
}
@media (min-width: 900px) {
  .entry-list article {
    grid-template-columns: 100px minmax(0, 1fr) 200px;
    gap: var(--s-10);
    align-items: start;
  }
}
.entry-list article:hover { background: var(--paper-warm); }
.entry-list article:hover .entry__num { color: var(--accent); }
.entry-list article:hover .entry__arrow { transform: translate(6px,-6px) rotate(-6deg); color: var(--accent); }

.entry__num {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.1em;
  padding-top: 4px;
  transition: color .25s var(--easing);
}
.entry__body h3 {
  margin: var(--s-2) 0 var(--s-3);
  font-size: clamp(1.3rem, 2vw, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.entry__body h3 a { color: var(--ink); }
.entry__body h3 a:hover { color: var(--accent); }
.entry__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.entry__meta .tag { font-size: 0.68rem; }
.entry__abstract {
  color: var(--muted-dark);
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
  max-width: 62ch;
}
.entry__aside {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  padding-top: 4px;
}
@media (max-width: 899px) {
  .entry__aside { display: none; }
}
.entry__arrow {
  justify-self: end;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 1.8rem;
  line-height: 1;
  transition: transform .3s var(--easing), color .3s var(--easing);
  display: inline-block;
}

/* ---------- 09. DETTAGLIO ---------- */

.article {
  background: var(--paper-warm);
  padding: var(--s-16) 0 var(--s-20);
  position: relative;
}
.article::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--pat-grid);
  background-size: 80px 80px;
  opacity: 0.35;
  pointer-events: none;
}
.article > * { position: relative; }

.article__crumb {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--s-6);
}
.article__crumb a { color: var(--muted); }
.article__crumb a:hover { color: var(--accent); }
.article__crumb .sep { color: var(--line-strong); }

.article__title {
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 900;
  letter-spacing: var(--tr-display);
  line-height: 1.04;
  color: var(--ink);
  margin: 0 0 var(--s-8);
  max-width: 22ch;
}

.article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-6) var(--s-8);
  padding: var(--s-4) 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: var(--s-10);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.article__meta dt {
  display: block;
  color: var(--muted);
  margin-bottom: var(--s-2);
  font-size: 0.66rem;
}
.article__meta dd {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

.article__cover {
  border-radius: var(--radius-lg);
  width: 100%;
  height: auto;
  margin-bottom: var(--s-10);
  box-shadow: var(--shadow);
}

.article__body {
  font-size: var(--fs-read);
  line-height: var(--lh-read);
  color: #1E293B;
}
.article__body > p:first-of-type::first-letter {
  font-size: 5.2rem;
  font-weight: 900;
  float: left;
  line-height: 0.85;
  color: var(--accent);
  padding: 0.35rem 0.7rem 0 0;
  margin-top: 0.2rem;
}
.article__body p { margin-bottom: var(--s-5); }
.article__body h2 {
  font-size: 1.7rem;
  font-weight: 800;
  margin: var(--s-10) 0 var(--s-4);
  letter-spacing: -0.015em;
}
.article__body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: var(--s-8) 0 var(--s-3);
}
.article__body blockquote {
  border-left: 3px solid var(--accent);
  padding: var(--s-2) 0 var(--s-2) var(--s-6);
  margin: var(--s-8) 0;
  font-size: 1.2rem;
  font-style: italic;
  color: var(--ink);
}

.article__return {
  margin-top: var(--s-16);
  padding-top: var(--s-8);
  border-top: 1px solid var(--line-strong);
}

/* ---------- 10. CHI SIAMO ---------- */

.manifesto {
  display: grid;
  gap: var(--s-8);
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .manifesto { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--s-16); }
}
.manifesto__heading {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--ink);
  margin: 0;
}
.manifesto__heading em {
  font-style: normal;
  color: var(--accent);
}
.manifesto__body p {
  font-size: var(--fs-read);
  line-height: var(--lh-read);
  color: var(--muted-dark);
}

.promoters {
  display: grid;
  gap: var(--s-5);
  grid-template-columns: 1fr;
  margin-top: var(--s-10);
}
@media (min-width: 900px) {
  .promoters { grid-template-columns: repeat(3, 1fr); }
}
.promoter-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: var(--s-8) var(--s-6);
  position: relative;
  transition: border-color .2s var(--easing), transform .25s var(--easing);
}
.promoter-card:hover { border-color: var(--ink); transform: translateY(-4px); }
.promoter-card__n {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.2em;
  margin-bottom: var(--s-5);
}
.promoter-card__tag {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--s-3);
  display: block;
}
.promoter-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 var(--s-4);
}
.promoter-card p {
  color: var(--muted-dark);
  font-size: 0.98rem;
  line-height: 1.55;
  margin: 0;
}

/* Single promoter protagonist (SollertIA Skills, unico promotore) */
.promoter-protagonist {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: var(--s-10) var(--s-8);
  margin-top: var(--s-4);
  position: relative;
  display: grid;
  gap: var(--s-10);
  grid-template-columns: 1fr;
  overflow: hidden;
}
.promoter-protagonist::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--pat-grid);
  background-size: 80px 80px;
  opacity: 0.45;
  pointer-events: none;
}
.promoter-protagonist > * { position: relative; }
@media (min-width: 880px) {
  .promoter-protagonist {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: var(--s-16);
    padding: var(--s-16) var(--s-12);
    align-items: start;
  }
}
.promoter-protagonist__meta {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  padding-top: var(--s-3);
  border-top: 1px solid var(--line-strong);
}
.promoter-protagonist__n {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}
.promoter-protagonist__tag {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}
.promoter-protagonist__body h3 {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.025em;
  margin: 0 0 var(--s-5);
  line-height: 1.05;
}
.promoter-protagonist__lead {
  font-size: var(--fs-read);
  line-height: var(--lh-read);
  color: var(--ink);
  margin: 0 0 var(--s-5);
  max-width: 56ch;
}
.promoter-protagonist__body p {
  color: var(--muted-dark);
  max-width: 58ch;
}
.promoter-protagonist__link {
  margin-top: var(--s-6);
}

.team-grid {
  display: grid;
  gap: var(--s-8);
  grid-template-columns: 1fr;
  margin-top: var(--s-10);
}
@media (min-width: 900px) {
  .team-grid { grid-template-columns: repeat(3, 1fr); }
}
.team-card {
  display: grid;
  gap: var(--s-4);
  padding: var(--s-6) 0;
  border-top: 1px solid var(--line-strong);
  position: relative;
}
.team-card__portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  background:
    linear-gradient(135deg, var(--ink) 0%, var(--navy) 100%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  color: #fff;
}
.team-card__portrait img {
  width: 100%; height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}
.team-card__portrait::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--pat-grid-light);
  background-size: 60px 60px;
  opacity: 0.9;
}
.team-card__portrait::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(70% 90% at 30% 90%, rgba(249,115,22,0.35) 0%, transparent 70%);
}
.team-card__initials {
  position: relative;
  z-index: 1;
  padding: var(--s-6);
  font-family: var(--font-mono);
  font-size: 4rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: rgba(255,255,255,0.86);
  line-height: 0.9;
}
.team-card__n {
  position: absolute;
  top: var(--s-4); right: var(--s-4);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.6);
  z-index: 1;
}
.team-card h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.015em;
}
.team-card__role {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}
.team-card__bio { color: var(--muted-dark); font-size: 0.95rem; line-height: 1.6; margin: 0; }
.team-card__flag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  background: var(--accent-paper);
  padding: 0.25rem 0.55rem;
  border-radius: 3px;
  text-transform: uppercase;
  margin-bottom: var(--s-2);
}

/* ---------- 11. CONTATTI ---------- */

.letter {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: var(--s-12) var(--s-10);
  position: relative;
  max-width: 760px;
  box-shadow: var(--shadow);
}
.letter::before, .letter::after {
  content: "+";
  position: absolute;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent);
  font-weight: 500;
}
.letter::before { top: var(--s-3); left: var(--s-4); }
.letter::after  { bottom: var(--s-3); right: var(--s-4); }

.letter__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-4);
  margin-bottom: var(--s-8);
  padding-bottom: var(--s-4);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--muted);
}
.letter__head strong { color: var(--ink); font-weight: 600; }

.letter__note {
  background: var(--accent-paper);
  border-left: 3px solid var(--accent);
  padding: var(--s-4) var(--s-5);
  margin-bottom: var(--s-8);
  color: var(--accent-dark);
  font-size: 0.92rem;
  line-height: 1.5;
}

.letter__field {
  margin-bottom: var(--s-6);
  display: grid;
  gap: var(--s-2);
}
.letter__field label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--muted);
}
.letter__field input,
.letter__field textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  padding: var(--s-3) 0;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  transition: border-color .2s var(--easing);
}
.letter__field input::placeholder,
.letter__field textarea::placeholder {
  color: var(--muted);
  opacity: 0.6;
}
.letter__field input:focus,
.letter__field textarea:focus {
  outline: none;
  border-bottom-color: var(--accent);
}
.letter__field textarea { resize: vertical; min-height: 120px; }

.letter__field select {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  padding: var(--s-3) 0;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  transition: border-color .2s var(--easing);
  cursor: pointer;
}
.letter__field select:focus { outline: none; border-bottom-color: var(--accent); }
.letter__field.has-error input,
.letter__field.has-error select,
.letter__field.has-error textarea {
  border-bottom-color: #B91C1C;
}
.letter__err {
  display: block;
  color: #B91C1C;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: var(--s-2);
}

.req {
  color: var(--accent);
  font-weight: 700;
  margin-left: 0.1em;
}

/* Honeypot: nascondiamo completamente, ma non con display:none
   (alcuni bot saltano i campi hidden). Posizioniamo off-screen. */
.hp {
  position: absolute !important;
  left: -10000px !important;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.letter__consents {
  border: 0;
  padding: 0;
  margin: var(--s-8) 0 var(--s-6);
  display: grid;
  gap: var(--s-5);
}
.letter__consents legend {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--muted);
  padding: 0;
  margin-bottom: var(--s-4);
}

.consent-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--s-4);
  padding: var(--s-4) var(--s-5);
  background: var(--paper-warm);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color .18s var(--easing), background .18s var(--easing);
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--ink);
}
.consent-row:hover { border-color: var(--line-strong); background: #fff; }
.consent-row.has-error { border-color: #B91C1C; background: #FEF2F2; }
.consent-row input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--accent);
  margin-top: 2px;
  cursor: pointer;
}
.consent-row strong { color: var(--accent-dark); margin-right: 0.25em; }
.consent-row a { text-decoration: underline; text-underline-offset: 3px; }
.consent-row a:hover { color: var(--accent); }

.letter__legal {
  margin-top: var(--s-6);
  padding: var(--s-5) var(--s-5);
  background: transparent;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--muted-dark);
}
.letter__legal strong { color: var(--ink); }
.letter__legal a { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 3px; }
.letter__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--s-4);
  margin-top: var(--s-8);
  padding-top: var(--s-6);
  border-top: 1px solid var(--line);
}
.letter__footer .signature {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--muted);
}
.letter__footer .signature strong { color: var(--ink); font-weight: 600; }

/* ---------- 12. ANIMAZIONI ---------- */
@keyframes flow {
  0%   { stroke-dashoffset: 0; opacity: 0.9; }
  50%  { opacity: 0.55; }
  100% { stroke-dashoffset: -32; opacity: 0.9; }
}
@keyframes pulseDot {
  0%, 100% { box-shadow: 0 0 0 6px rgba(249,115,22,0.22); }
  50%      { box-shadow: 0 0 0 12px rgba(249,115,22,0.05); }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Reveal on scroll (applicata via JS quando .is-visible) */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--easing), transform .7s var(--easing);
  transition-delay: var(--reveal-delay, 0s);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Entrance scaglionato hero */
.hero__meta, .hero__title, .hero__tagline, .hero__actions {
  animation: rise .9s var(--easing) both;
}
.hero__meta     { animation-delay: 0.05s; }
.hero__title    { animation-delay: 0.15s; }
.hero__tagline  { animation-delay: 0.30s; }
.hero__actions  { animation-delay: 0.45s; }

/* ---------- 13. FOOTER ---------- */

.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.72);
  padding: var(--s-20) 0 var(--s-8);
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--pat-grid-light);
  background-size: 80px 80px;
  opacity: 0.9;
  pointer-events: none;
}
.site-footer > * { position: relative; }

.site-footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-10);
  margin-bottom: var(--s-12);
  padding-bottom: var(--s-10);
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
@media (min-width: 900px) {
  .site-footer__top { grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: var(--s-10); }
}
.site-footer__brand h4 {
  color: #fff;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.015em;
  margin: var(--s-4) 0 var(--s-3);
}
.site-footer__brand p {
  color: rgba(255,255,255,0.65);
  font-size: 0.95rem;
  max-width: 40ch;
  line-height: 1.6;
  margin: 0;
}
.site-footer__col h5 {
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  margin: 0 0 var(--s-4);
}
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s-3); }
.site-footer a { color: rgba(255,255,255,0.72); font-size: 0.95rem; }
.site-footer a:hover { color: var(--accent); }

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-5);
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}
.site-footer__bottom a { color: rgba(255,255,255,0.65); }
.site-footer__initiative {
  margin-top: var(--s-6);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  align-items: flex-start;
}
.site-footer__sollertia-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--paper-warm);
  border-radius: 10px;
  padding: var(--s-3) var(--s-5);
  box-shadow: 0 4px 16px -6px rgb(0 0 0 / 0.3);
  transition: transform .18s var(--easing), background .18s var(--easing);
}
.site-footer__sollertia-box:hover {
  transform: translateY(-2px);
  background: #fff;
}
.site-footer__sollertia-box img {
  height: 46px;
  width: auto;
  display: block;
}
.site-footer__mono {
  color: rgba(255,255,255,0.6);
}
.site-footer__mono svg {
  width: 22px; height: 22px;
  color: var(--accent);
}

/* ---------- 14. RESPONSIVE ---------- */
@media (max-width: 860px) {
  .site-header__toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: #fff;
    border-top: 1px solid var(--line);
    display: none;
    padding: var(--s-4) 0;
    box-shadow: var(--shadow);
  }
  .site-nav.is-open { display: block; }
  .site-nav ul {
    flex-direction: column;
    gap: 0;
    align-items: stretch;
  }
  .site-nav li { border-top: 1px solid var(--line); }
  .site-nav li:first-child { border-top: 0; }
  .site-nav a {
    display: flex;
    justify-content: space-between;
    padding: var(--s-4) var(--s-6);
  }
  .site-nav a::after { display: none; }

  .hero { padding: var(--s-16) 0 var(--s-12); }
  .hero__coord { display: none; }

  .entry-list article { padding: var(--s-6) 0; }
  .entry__num { font-size: 0.9rem; }
  .article { padding: var(--s-10) 0 var(--s-12); }
  .article__title { font-size: clamp(1.8rem, 6vw, 2.6rem); }
  .article__body > p:first-of-type::first-letter { font-size: 4rem; }

  .letter { padding: var(--s-8) var(--s-5); }
  .stamp { padding: var(--s-10) var(--s-6); }
}

@media (max-width: 560px) {
  .area-card { padding: var(--s-6) var(--s-5); min-height: 260px; }
  .area-card__n { font-size: 4rem; }
  .intro-grid__body p:first-child::first-letter { font-size: 3.6rem; }
}

/* ---------- 15. REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .triangle-svg__flow line,
  .hero__meta .dot { animation: none !important; }
}