/* ============================================================
   ESPRIT ARTIFICIEL — Design System V3 "Editorial Engineering"
   Fond anthracite + bleu électrique + cuivre (rare)
   ============================================================ */

:root {
  --ink-950: #070809;
  --ink-900: #0A0C10;
  --ink-850: #0E1015;
  --ink-800: #12161E;
  --ink-700: #1A1F2B;
  --ink-600: #232A38;
  --ink-500: #2F3747;
  --ink-400: #3D4555;

  --surface: #0A0C10;
  --surface-2: #0E1015;
  --surface-soft: #12161E;
  --border: #1F2633;
  --border-soft: #161B25;
  --rule: #222938;

  --text: #EDEEF2;
  --text-muted: #9AA3B5;
  --text-dim: #6B7385;

  /* accent principal : bleu électrique */
  --accent: #4D9FFF;
  --accent-600: #3A82E8;
  --accent-300: #7FB8FF;
  --accent-soft: rgba(77,159,255,0.12);

  /* accent secondaire : cuivre (rare, éditorial) */
  --copper: #E0A45E;
  --copper-soft: rgba(224,164,94,0.12);

  /* héritage violet V2, relégué */
  --violet-500: #8b5cf6;
  --violet-600: #7c3aed;

  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 22px;
  --shadow: 0 1px 0 rgba(255,255,255,.04) inset, 0 30px 60px -30px rgba(0,0,0,.6);

  --font: "Space Grotesk", "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-text: "Instrument Sans", "Inter", ui-sans-serif, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --container: 1240px;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --ink-950: #E9EEF5;
  --ink-900: #F7F9FC;
  --ink-850: #F0F4F8;
  --ink-800: #E7EDF5;
  --ink-700: #DCE4EE;
  --ink-600: #CBD6E3;
  --ink-500: #AAB8C9;
  --ink-400: #8796A9;

  --surface: #FFFFFF;
  --surface-2: #F7F9FC;
  --surface-soft: #EEF3F8;
  --border: #CFD9E6;
  --border-soft: #DEE6EF;
  --rule: #CDD8E5;

  --text: #111827;
  --text-muted: #465569;
  --text-dim: #66758A;

  --accent: #176DD2;
  --accent-600: #0F5EBB;
  --accent-300: #3287E8;
  --accent-soft: rgba(23,109,210,.1);
  --copper: #9A5A16;
  --copper-soft: rgba(154,90,22,.1);
  --shadow: 0 1px 0 rgba(255,255,255,.9) inset, 0 24px 54px -34px rgba(31,42,58,.35);
  color-scheme: light;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-text);
  color: var(--text);
  background: var(--ink-900);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    radial-gradient(1200px 800px at 85% -200px, rgba(77,159,255,.07), transparent 60%),
    radial-gradient(900px 700px at -10% 40%, rgba(224,164,94,.035), transparent 60%);
  background-attachment: fixed;
}
main { min-height: 60vh; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-300); }
h1, h2, h3, h4, h5 { line-height: 1.1; font-family: var(--font); font-weight: 600; margin: 0 0 .6em; letter-spacing: -.02em; color: var(--text); }
h1 { font-weight: 500; letter-spacing: -.035em; }
p { margin: 0 0 1em; }
ul { padding-left: 1.2em; }
::selection { background: var(--accent); color: #0A0C10; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- Container ---- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }

/* ---- Sections ---- */
.section { padding: 6rem 0; position: relative; }
.section--soft { background: linear-gradient(180deg, var(--surface-2), var(--ink-900)); }
.section--dark { background: var(--ink-950); color: var(--text); }
.section--accent { background: linear-gradient(135deg, var(--ink-950) 0%, #0F1420 50%, var(--ink-900) 100%); position: relative; overflow: hidden; }
.section--paper {
  background:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,.04) 1px, transparent 0),
    var(--ink-900);
  background-size: 22px 22px;
}

.section-head { max-width: 820px; margin: 0 0 3.5rem; }
.section-head--center { text-align: center; margin: 0 auto 3.5rem; }
.section-head h2 { font-size: clamp(1.8rem, 3.6vw, 3rem); margin-bottom: .6rem; }
.section-head p { color: var(--text-muted); font-size: 1.08rem; max-width: 62ch; margin: 0; }

.overline {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--text-dim);
  display: inline-flex; align-items: center; gap: .7rem;
  margin-bottom: 1.2rem;
  font-weight: 500;
}
.overline::before {
  content: ""; width: 28px; height: 1px; background: var(--accent); display: inline-block;
}
.overline--copper { color: var(--copper); }
.overline--copper::before { background: var(--copper); }
.overline-num {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--text-dim);
  display: inline-block; width: 2.2rem; margin-right: 1.2rem;
}

/* ---- Grids ---- */
.grid { display: grid; gap: 1.5rem; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .85rem 1.6rem;
  border-radius: 8px;
  font-weight: 600; font-size: .92rem;
  font-family: var(--font);
  letter-spacing: -.01em;
  transition: transform .15s ease, background .18s ease, color .18s ease, border-color .18s ease;
  cursor: pointer; border: 0;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn--primary {
  background: var(--accent); color: #0A0C10;
}
.btn--primary:hover { background: var(--accent-300); color: #0A0C10; }
.btn--primary .arrow { transition: transform .2s ease; }
.btn--primary:hover .arrow { transform: translateX(3px); }
.btn--ghost {
  background: transparent; color: var(--text);
  border: 1px solid var(--rule);
}
.btn--ghost:hover { background: var(--surface-soft); border-color: var(--accent); color: var(--accent); }
.btn--light { background: #fff; color: var(--ink-900); }
.btn--block { width: 100%; justify-content: center; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.btn .arrow { display: inline-block; transition: transform .2s ease; }

/* ---- Header ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--ink-900) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 1.5rem;
}
.site-header .brand {
  display: flex; align-items: center; gap: .7rem;
  font-family: var(--font); font-weight: 600; font-size: 1.02rem; color: var(--text);
}
.site-header .brand-logo { position: relative; display: block; width: 166px; height: 56px; flex: 0 0 auto; overflow: hidden; }
.site-header .brand-logo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.site-header .brand-logo--dark { transform: scale(1.28); }
.site-header .brand-logo--light { display: none; }
:root[data-theme="light"] .site-header .brand-logo--dark { display: none; }
:root[data-theme="light"] .site-header .brand-logo--light { display: block; }
.site-header .brand .brand-sub {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .15em;
  color: var(--text-dim); text-transform: uppercase; font-weight: 400;
}
.site-nav { display: flex; align-items: center; gap: 1.8rem; }
.site-nav a {
  color: var(--text-muted); font-size: .92rem; font-weight: 500;
  font-family: var(--font); letter-spacing: -.005em;
  position: relative;
}
.site-nav a:hover { color: var(--text); text-decoration: none; }
.site-nav a.active { color: var(--text); }
.site-nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -4px;
  height: 1px; background: var(--accent);
}
.menu-toggle {
  display: none; background: none; border: 0;
  font-size: 1.3rem; color: var(--text); cursor: pointer; padding: .4rem;
}
.theme-toggle { width: 40px; height: 40px; padding: 0; justify-content: center; font-size: 1rem; background: none; border: 1px solid transparent; color: var(--text-muted); cursor: pointer; }
.theme-toggle:hover { border-color: var(--border); }
.theme-icon { display: inline-flex; }
.theme-icon--moon { display: none; }
:root[data-theme="light"] .theme-icon--sun { display: none; }
:root[data-theme="light"] .theme-icon--moon { display: inline-flex; }

/* ---- Hero ---- */
.hero {
  position: relative;
  padding: 2rem 0 2.5rem;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,.035) 1px, transparent 0),
    radial-gradient(ellipse at 70% 20%, rgba(77,159,255,.12), transparent 50%),
    radial-gradient(ellipse at 30% 80%, rgba(224,164,94,.06), transparent 50%);
  background-size: 28px 28px, 100% 100%, 100% 100%;
  mask-image: linear-gradient(180deg, #000 60%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, #000 60%, transparent 100%);
}
:root[data-theme="light"] .hero::before {
  background-image:
    radial-gradient(circle at 1px 1px, rgba(17,24,39,.055) 1px, transparent 0),
    radial-gradient(ellipse at 70% 20%, rgba(23,109,210,.13), transparent 50%),
    radial-gradient(ellipse at 30% 80%, rgba(154,90,22,.07), transparent 50%);
}
.hero .container {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.08fr .92fr; gap: 2.5rem;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.4rem, 5.4vw, 4.6rem);
  line-height: 1.02;
  margin: 0 0 1.6rem;
}
.hero h1 .accent {
  color: var(--accent);
  font-style: italic;
  font-weight: 400;
}
.hero .lead {
  font-size: 1.18rem;
  color: var(--text-muted);
  max-width: 52ch;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; gap: .8rem; flex-wrap: wrap; }
.hero-partner {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1rem, 3vw, 2.4rem);
  margin-top: -1.25rem;
  padding-top: 1.35rem;
  border-top: 1px solid var(--rule);
  color: var(--text-muted);
}
.partner-intro { display: flex; flex-direction: column; gap: .1rem; font-size: .82rem; }
.partner-eyebrow { font-family: var(--mono); font-size: .68rem; font-weight: 600; letter-spacing: .13em; text-transform: uppercase; color: var(--accent); }
.partner-join { color: var(--text-dim); font-family: var(--mono); font-size: 1rem; }
.fopacademy-mark, .qualiopi-mark { display: inline-flex; align-items: center; gap: .75rem; color: var(--text); }
.fopacademy-mark:hover { color: var(--text); }
.fopacademy-mark { flex-direction: column; align-items: flex-start; gap: .35rem; }
.fopacademy-mark img { width: 155px; height: auto; object-fit: contain; }
.fopacademy-mark > span:last-child, .qualiopi-mark > span:last-child { display: flex; flex-direction: column; line-height: 1.1; }
.fopacademy-mark b { font: 600 1.05rem/1 var(--font); letter-spacing: -.025em; text-transform: lowercase; }
.fopacademy-mark small, .qualiopi-mark small { margin-top: .3rem; color: var(--text-dim); font: .62rem/1 var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.qualiopi-mark { padding-left: clamp(1rem, 2.5vw, 2rem); border-left: 1px solid var(--rule); }
.qualiopi-mark b { font: 500 1.05rem/1 var(--font); letter-spacing: -.02em; }
.quality-seal { position: relative; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: var(--copper); border: 1px solid color-mix(in srgb, var(--copper) 65%, transparent); background: var(--copper-soft); }
.quality-seal::before, .quality-seal::after { content: ""; position: absolute; inset: 4px; border: 1px dotted currentColor; border-radius: 50%; opacity: .65; }
.quality-seal::after { inset: -4px 8px; border-style: solid; border-width: 0 1px; border-radius: 0; transform: rotate(45deg); opacity: .25; }
.quality-seal span { font-size: .9rem; font-weight: 700; }

/* ---- Hero system scene (SVG) ---- */
.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  width: min(100%, 590px);
  max-height: 590px;
  justify-self: center;
  transform: none;
}
.hero-visual svg { width: 100%; height: 100%; overflow: visible; }

/* ---- Proof band (logos + counters) ---- */
.proof-band {
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  background: var(--ink-900);
  overflow: hidden;
}
.proof-band .counters {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--rule);
}
.counter { text-align: left; }
.counter .num {
  font-family: var(--font); font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500; letter-spacing: -.02em;
  color: var(--text); line-height: 1;
  margin-bottom: .4rem;
}
.counter .num .accent { color: var(--accent); }
.counter .label {
  font-family: var(--mono); font-size: .72rem;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--text-dim);
}

/* Logos marquee */
.logos-title {
  font-family: var(--mono); font-size: .72rem;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--text-dim); text-align: center;
  margin-bottom: 1.2rem;
}
.logos-title small { color: var(--text-dim); opacity: .7; font-weight: 400; display: block; margin-top: .3rem; letter-spacing: .05em; text-transform: none; font-size: .78rem; }
.logos-marquee {
  position: relative;
  display: flex;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.logos-track {
  display: flex; gap: 1rem; align-items: center;
  animation: marquee 55s linear infinite;
  padding: 1rem 0;
}
.logos-marquee:hover .logos-track { animation-play-state: paused; }
.logos-track a {
  display: inline-flex; align-items: center; gap: .65rem;
  min-width: max-content; padding: .65rem .9rem;
  border: 1px solid var(--border); border-radius: 10px;
  background: color-mix(in srgb, var(--surface-soft) 86%, transparent);
  color: var(--text-muted); font-family: var(--font); font-size: .82rem; font-weight: 600;
  transition: border-color .2s ease, color .2s ease, transform .2s ease;
}
.logos-track img { height: 27px; width: 27px; object-fit: contain; }
.logos-track a:hover { border-color: var(--accent); color: var(--text); transform: translateY(-2px); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---- Dual offer (agence / formation) ---- */
.dual { display: grid; grid-template-columns: 1fr 1fr; gap: 0; align-items: stretch; }
.dual-block {
  padding: 3.5rem 2.5rem;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.dual-block--agency {
  background: linear-gradient(135deg, var(--ink-850), var(--ink-900));
  border-right: none;
}
.dual-block--agency::before {
  content: ""; position: absolute; top: 0; right: 0; width: 40%; height: 100%;
  background: radial-gradient(circle at 100% 0%, rgba(77,159,255,.08), transparent 70%);
}
.dual-block--training {
  background: linear-gradient(135deg, var(--ink-900), var(--ink-850));
  border-left: none;
}
.dual-block--training::before {
  content: ""; position: absolute; bottom: 0; right: 0; width: 40%; height: 100%;
  background: radial-gradient(circle at 100% 100%, rgba(224,164,94,.06), transparent 70%);
}
.dual-block > * { position: relative; z-index: 2; }
.dual-block h3 {
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  margin-bottom: 1rem;
}
.dual-block p { color: var(--text-muted); font-size: 1rem; max-width: 46ch; margin-bottom: 1.5rem; }
.dual-tag {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 1.2rem;
}
.dual-tag--copper { color: var(--copper); }
.dual-visual {
  aspect-ratio: 16/10;
  background: var(--surface-soft);
  border-radius: 12px;
  border: 1px solid var(--border);
  margin: 1.5rem 0;
  overflow: hidden;
  position: relative;
}
.dual-visual svg { width: 100%; height: 100%; }

.dual-quote {
  grid-column: 1 / -1;
  padding: 3rem 2rem;
  border: 1px solid var(--rule);
  background: linear-gradient(180deg, transparent, var(--surface-2));
  text-align: center;
}
.dual-quote p {
  font-family: var(--font); font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  font-style: italic; font-weight: 400;
  color: var(--text); margin: 0 auto;
  max-width: 62ch;
  letter-spacing: -.01em;
}
.dual-quote p::before, .dual-quote p::after {
  content: ""; display: block; width: 40px; height: 1px;
  background: var(--copper); margin: 1rem auto;
}

/* ---- Solutions (indexed rows) ---- */
.solutions-list {
  display: flex; flex-direction: column;
  border-top: 1px solid var(--rule);
}
.solution-row {
  display: grid;
  grid-template-columns: 80px 1fr 220px 60px;
  gap: 2rem;
  align-items: center;
  padding: 1.8rem 0;
  border-bottom: 1px solid var(--rule);
  transition: background .2s ease, padding .2s ease;
  cursor: default;
  position: relative;
}
.solution-row:hover {
  background: linear-gradient(90deg, transparent, rgba(77,159,255,.04), transparent);
  padding-left: .8rem;
  padding-right: .8rem;
}
.solution-row .num {
  font-family: var(--mono); font-size: .85rem;
  color: var(--text-dim); letter-spacing: .08em;
}
.solution-row .title {
  font-family: var(--font); font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 500; letter-spacing: -.01em;
  margin: 0 0 .4rem;
}
.solution-row .desc {
  color: var(--text-muted); font-size: .92rem;
  margin: 0;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.solution-row .tags {
  display: flex; flex-wrap: wrap; gap: .35rem;
}
.solution-row .tag {
  font-family: var(--mono); font-size: .68rem;
  letter-spacing: .04em; text-transform: uppercase;
  padding: .25rem .55rem;
  border: 1px solid var(--rule); border-radius: 4px;
  color: var(--text-muted);
  background: var(--surface-soft);
}
.solution-row .arrow {
  color: var(--text-dim); font-size: 1.2rem;
  transition: color .2s ease, transform .2s ease;
}
.solution-row:hover .arrow { color: var(--accent); transform: translateX(4px); }

/* ---- Case study (hero Oracle) ---- */
.case {
  position: relative;
  padding: 4rem 0;
}
.case-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 3rem;
  align-items: center;
}
.case-visual {
  aspect-ratio: 4/3;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow);
}
.case-visual svg { width: 100%; height: 100%; }
.case-tag {
  display: inline-flex; align-items: center; gap: .4rem;
  font-family: var(--mono); font-size: .72rem;
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--copper);
  padding: .35rem .75rem;
  border: 1px solid var(--copper);
  border-radius: 999px;
  margin-bottom: 1rem;
}
.case-tag::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--copper);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}
.case h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  margin-bottom: 1.2rem;
}
.case-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1rem; margin: 2rem 0;
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.case-stat .num {
  font-family: var(--font); font-size: 1.6rem;
  font-weight: 500; letter-spacing: -.02em;
  color: var(--accent); line-height: 1;
}
.case-stat .label {
  font-family: var(--mono); font-size: .7rem;
  color: var(--text-dim); letter-spacing: .1em;
  text-transform: uppercase; margin-top: .3rem;
  display: block;
}
.case-proofs {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1rem; margin-top: 2rem;
}
.case-proof {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 16/10;
  position: relative;
}
.case-proof img {
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(1.12) contrast(1.06) saturate(1.08);
}
.case-proof:hover img { filter: brightness(1.25) contrast(1.08) saturate(1.1); }
.case-proof::after {
  content: attr(data-label);
  position: absolute; bottom: .6rem; left: .8rem;
  font-family: var(--mono); font-size: .65rem;
  letter-spacing: .08em; text-transform: uppercase;
  color: #fff; text-shadow: 0 1px 4px rgba(0,0,0,.8);
  background: rgba(0,0,0,.5); padding: .25rem .5rem; border-radius: 4px;
}

/* ---- Works mosaic (realisations) ---- */
.works {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
  grid-auto-rows: minmax(220px, auto);
}
.work {
  position: relative;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  padding: 1.8rem;
  display: flex; flex-direction: column;
  transition: transform .2s ease, border-color .2s ease;
}
.work:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}
.work--lg { grid-column: span 7; min-height: 320px; }
.work--md { grid-column: span 5; }
.work--sm { grid-column: span 4; min-height: 260px; }
.work--xl { grid-column: span 8; min-height: 300px; }
.work--xs { grid-column: span 4; min-height: 260px; }

.work .work-meta {
  font-family: var(--mono); font-size: .72rem;
  color: var(--text-dim); letter-spacing: .1em;
  text-transform: uppercase; margin-bottom: .8rem;
  display: flex; align-items: center; gap: .6rem;
}
.work .work-meta .status {
  display: inline-block; width: 6px; height: 6px;
  border-radius: 50%; background: var(--accent);
}
.work .work-meta .status--exp { background: var(--copper); }
.work .work-meta .status--os { background: #4ade80; }
.work h3 {
  font-size: 1.4rem; margin-bottom: .5rem;
  font-weight: 500;
}
.work p { color: var(--text-muted); font-size: .92rem; margin-bottom: 0; flex: 1; }
.work .work-visual {
  position: absolute; right: 1.5rem; bottom: 1.5rem;
  width: 170px; height: 108px;
  border-radius: 8px; overflow: hidden;
  border: 1px solid var(--ink-500);
  box-shadow: 0 10px 24px -6px rgba(0,0,0,.6);
}
.work .work-visual img { width: 100%; height: 100%; object-fit: cover; filter: brightness(1.1) contrast(1.05); }
.work .work-visual svg { width: 100%; height: 100%; }
.work .work-visual--dual { width: 224px; display: grid; grid-template-columns: 1fr 1fr; gap: 3px; background: var(--ink-800); }
.work .work-visual--dual img { min-width: 0; }
.work .work-link {
  margin-top: 1.2rem;
  font-family: var(--mono); font-size: .82rem;
  color: var(--accent); letter-spacing: .02em;
  display: inline-flex; align-items: center; gap: .4rem;
}

/* ---- Formations (parcours) ---- */
.parcours-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 1rem;
}
.parcours {
  padding: 2rem 1.8rem;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  position: relative;
  transition: border-color .2s ease, transform .2s ease;
}
.parcours:hover { border-color: var(--accent); transform: translateY(-2px); }
.parcours .num {
  font-family: var(--mono); font-size: .75rem;
  color: var(--accent); letter-spacing: .1em;
  margin-bottom: 1rem; display: block;
}
.parcours h3 {
  font-size: 1.2rem; margin-bottom: .6rem; font-weight: 500;
}
.parcours p { color: var(--text-muted); font-size: .9rem; margin-bottom: 1rem; }
.parcours .steps {
  font-family: var(--mono); font-size: .72rem;
  color: var(--text-dim); line-height: 1.8;
}

.formations-env {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 3rem;
  padding: 2rem;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
}
.formations-env h4 {
  font-family: var(--mono); font-size: .72rem;
  color: var(--copper); letter-spacing: .15em; text-transform: uppercase;
  margin-bottom: 1rem;
}
.formations-env .env-visual {
  aspect-ratio: 16/9;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--rule);
  background: var(--ink-800);
}
.formations-env .env-visual svg { width: 100%; height: 100%; }

/* ---- Lab section (editorial) ---- */
.lab-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  align-items: start;
  margin-bottom: 3rem;
}
.lab-head .tag {
  font-family: var(--mono); font-size: .7rem;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--copper); padding: .3rem .7rem;
  border: 1px solid var(--copper);
  border-radius: 4px; display: inline-block;
  margin-bottom: 1rem;
}
.lab-head h2 { font-size: clamp(2rem, 3.6vw, 2.8rem); margin-bottom: 1rem; }
.lab-head p { color: var(--text-muted); font-size: 1.05rem; }

.research-notes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 1rem;
}
.research-note {
  padding: 1.8rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color .2s ease, background .2s ease;
  position: relative;
}
.research-note:hover {
  border-color: var(--copper);
  background: rgba(224,164,94,.03);
}
.research-note .rn-id {
  font-family: var(--mono); font-size: .72rem;
  color: var(--copper); letter-spacing: .12em;
  margin-bottom: .8rem;
  display: block;
}
.research-note h4 {
  font-size: 1.1rem; margin-bottom: .5rem;
  font-weight: 500; line-height: 1.3;
}
.research-note p { color: var(--text-muted); font-size: .88rem; margin-bottom: 1rem; }
.research-note .rn-link {
  font-family: var(--mono); font-size: .82rem;
  color: var(--copper); display: inline-flex; align-items: center; gap: .4rem;
}

/* ---- Method timeline ---- */
.method {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  position: relative;
}
.method::before {
  content: ""; position: absolute;
  top: 40px; left: 5%; right: 5%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--rule) 10%, var(--rule) 90%, transparent);
  z-index: 0;
}
.method-step {
  position: relative; z-index: 1;
  text-align: center;
  padding-top: 0;
}
.method-step .dot {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 1.5px solid var(--rule);
  margin: 0 auto 1.2rem;
  position: relative;
  transition: border-color .3s ease, background .3s ease;
}
.method-step .dot::after {
  content: ""; position: absolute; inset: 4px;
  border-radius: 50%; background: var(--accent);
  transform: scale(0); transition: transform .3s ease;
}
.method-step:hover .dot { border-color: var(--accent); }
.method-step:hover .dot::after { transform: scale(1); }
.method-step h4 {
  font-size: 1rem; margin-bottom: .4rem; font-weight: 500;
}
.method-step p {
  font-size: .85rem; color: var(--text-muted);
  margin: 0;
}
.method-step .num {
  font-family: var(--mono); font-size: .68rem;
  color: var(--text-dim); letter-spacing: .12em;
  display: block; margin-bottom: .4rem;
}

/* ---- CTA final ---- */
.cta-final {
  padding: 5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-final::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 50% 50%, rgba(77,159,255,.12), transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(224,164,94,.06), transparent 50%);
  z-index: 0;
}
.cta-final > * { position: relative; z-index: 2; }
.cta-final h2 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  margin-bottom: 1.2rem;
}
.cta-final p { color: var(--text-muted); font-size: 1.1rem; max-width: 54ch; margin: 0 auto 2rem; }
.cta-final .cta-actions { display: flex; gap: .8rem; justify-content: center; flex-wrap: wrap; }

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--border-soft);
  background: var(--ink-950);
  margin-top: 0;
  padding: 4rem 0 2rem;
}
.site-footer, .site-footer a { color: var(--text-muted); }
.site-footer .grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr;
  gap: 2rem;
}
.site-footer h4 {
  font-family: var(--mono); font-size: .72rem;
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--text-dim); margin-bottom: 1.2rem; font-weight: 500;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .55rem; font-size: .9rem; }
.site-footer ul a:hover { color: var(--text); }
.site-footer .footer-logo { position: relative; display: block; width: 210px; height: 70px; margin-bottom: 1rem; }
.site-footer .footer-logo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; object-position: left center; }
.site-footer .footer-logo--light { display: none; }
:root[data-theme="light"] .site-footer .footer-logo--dark { display: none; }
:root[data-theme="light"] .site-footer .footer-logo--light { display: block; }
.site-footer .brand p { font-size: .88rem; color: var(--text-muted); max-width: 32ch; }
.site-footer .eco-list a {
  display: inline-flex; align-items: center; gap: .3rem;
  font-family: var(--mono); font-size: .82rem;
}
.site-footer .eco-list a:hover { color: var(--accent); }
.site-footer .fine {
  margin-top: 2.5rem; padding-top: 1.5rem;
  border-top: 1px solid var(--border-soft);
  font-size: .82rem; color: var(--text-dim);
  font-family: var(--mono); letter-spacing: .02em;
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}

/* ---- Cards (V3 style) ---- */
.card {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: transform .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--accent); }
.card .icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  font-size: 1.25rem; margin-bottom: 1rem;
}
.card h3 { font-size: 1.08rem; }
.card p { color: var(--text-muted); font-size: .92rem; }

/* ---- Tags (héritage V2) ---- */
.tag { display: inline-block; padding: .22rem .7rem; border-radius: 999px; font-size: .72rem; font-weight: 600; letter-spacing: .02em; font-family: var(--mono); }
.tag--production { background: rgba(22, 163, 74, .15); color: #4ade80; border: 1px solid rgba(22, 163, 74, .3); }
.tag--experimental { background: var(--copper-soft); color: var(--copper); border: 1px solid rgba(224,164,94,.3); }
.tag--prototype { background: rgba(220, 38, 38, .15); color: #f87171; border: 1px solid rgba(220, 38, 38, .3); }
.tag--open-source { background: rgba(77, 159, 255, .1); color: var(--accent); border: 1px solid rgba(77, 159, 255, .3); }
.tag--used-internal { background: rgba(59, 130, 246, .1); color: #93c5fd; border: 1px solid rgba(59, 130, 246, .3); }
.tag--private { background: var(--ink-600); color: #aab3c5; border: 1px solid var(--ink-500); }

/* ---- Maryline widget ---- */
#maryline-root { position: fixed; right: 1.2rem; bottom: 1.2rem; z-index: 90; }
.ml-fab {
  width: 60px; height: 60px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--surface-soft); color: var(--text);
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px -6px rgba(0,0,0,.5); font-size: 1.5rem;
  display: grid; place-items: center; transition: transform .15s, border-color .15s;
}
.ml-fab:hover { transform: scale(1.05); border-color: var(--accent); }
.ml-fab img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
.ml-fab .badge { position: absolute; top: -2px; right: -2px; width: 14px; height: 14px; background: #22c55e; border-radius: 50%; border: 2px solid var(--ink-900); }
.ml-fab .ml-fab-txt {
  position: absolute; right: calc(100% + 12px); top: 50%; transform: translateY(-50%);
  white-space: nowrap; background: var(--surface-soft); color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px; padding: .55rem 1rem; font-size: .82rem; font-weight: 500;
  opacity: 0; pointer-events: none; transition: opacity .18s ease; max-width: 60vw; overflow: hidden; text-overflow: ellipsis;
}
.ml-fab:hover .ml-fab-txt { opacity: 1; }
.ml-panel {
  position: fixed; right: 1.2rem; bottom: 5.6rem;
  width: min(420px, calc(100vw - 2.4rem));
  max-height: min(640px, calc(100vh - 7rem));
  display: none; flex-direction: column;
  background: var(--surface-soft); border: 1px solid var(--border); border-radius: 18px;
  box-shadow: 0 24px 60px -16px rgba(0,0,0,.6); overflow: hidden; z-index: 91;
}
.ml-panel.open { display: flex; }
.ml-head { display: flex; align-items: center; gap: .8rem; padding: .9rem 1.1rem; background: linear-gradient(135deg, var(--ink-800), var(--ink-900)); color: var(--text); border-bottom: 1px solid var(--border); }
.ml-head img { width: 42px; height: 42px; border-radius: 50%; border: 2px solid var(--rule); }
.ml-head .t { font-weight: 600; }
.ml-head .s { font-size: .78rem; opacity: .7; }
.ml-head .close { margin-left: auto; background: none; border: 0; color: var(--text-muted); font-size: 1.2rem; cursor: pointer; }
.ml-modes { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: .4rem; padding: .6rem .8rem; background: var(--ink-850); border-bottom: 1px solid var(--border); }
.ml-mode { border: 1px solid var(--border); background: var(--ink-800); color: var(--text-muted); border-radius: 10px; padding: .45rem .4rem; font-size: .74rem; font-weight: 600; cursor: pointer; line-height: 1.25; }
.ml-mode.active { border-color: var(--accent); color: var(--accent); }
.ml-msgs { flex: 1; overflow-y: auto; padding: 1rem; display: flex; flex-direction: column; gap: .7rem; background: var(--ink-850); }
.ml-msg { max-width: 85%; padding: .65rem .9rem; border-radius: 14px; font-size: .9rem; white-space: pre-wrap; word-break: break-word; }
.ml-msg--bot { align-self: flex-start; background: var(--ink-800); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.ml-msg--user { align-self: flex-end; background: var(--accent); color: #0A0C10; border-bottom-right-radius: 4px; }
.ml-actions { padding: .5rem .9rem; border-top: 1px solid var(--border); display: flex; gap: .6rem; }
.ml-input { display: flex; gap: .5rem; padding: .7rem .9rem; border-top: 1px solid var(--border); }
.ml-input input { flex: 1; border: 1px solid var(--border); border-radius: 999px; padding: .6rem 1rem; font: inherit; background: var(--ink-800); color: var(--text); }
.ml-input button { width: 42px; height: 42px; border-radius: 50%; border: 0; background: var(--accent); color: #0A0C10; cursor: pointer; font-size: 1rem; flex-shrink: 0; }
.ml-input button[disabled] { opacity: .4; cursor: not-allowed; }

/* ---- Utility ---- */
.text-muted { color: var(--text-muted); }
.text-dim { color: var(--text-dim); }
.text-accent { color: var(--accent); }
.text-copper { color: var(--copper); }
.text-sm { font-size: .9rem; }
.text-xs { font-size: .8rem; }
.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 2rem; } .mt-4 { margin-top: 3rem; }
.mb-1 { margin-bottom: .5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 2rem; }
.center { text-align: center; }
.stack { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
.prose { max-width: 72ch; }
.prose h2 { margin-top: 2rem; font-size: 1.5rem; }
.prose h3 { margin-top: 1.5rem; font-size: 1.15rem; }
.prose li { margin-bottom: .3rem; }
.prose code { font-family: var(--mono); font-size: .85em; background: var(--surface-soft); border: 1px solid var(--border); padding: .1em .35em; border-radius: 4px; }

/* ---- Page head (interne avec ambiance cinématique) ---- */
.page-head {
  padding: 4.5rem 0 3rem;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: 
    radial-gradient(ellipse 60% 80% at 75% 20%, rgba(124, 58, 237, 0.12), transparent 70%),
    radial-gradient(ellipse 50% 60% at 20% 90%, rgba(217, 119, 6, 0.08), transparent 60%),
    var(--ink-950);
}
.page-head::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 85%);
  pointer-events: none;
}
.page-head .container {
  position: relative;
  z-index: 1;
}
.page-head h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  max-width: 26ch;
  line-height: 1.15;
  margin: .4rem 0 1rem;
}
.page-head p {
  color: var(--text-muted);
  font-size: 1.12rem;
  max-width: 62ch;
  line-height: 1.6;
}

/* ---- Breadcrumb ---- */
.breadcrumb { font-family: var(--mono); font-size: .82rem; color: var(--text-dim); display: flex; gap: .4rem; flex-wrap: wrap; margin-bottom: 1.5rem; letter-spacing: .03em; }
.breadcrumb a { color: var(--text-dim); }
.breadcrumb .sep { color: var(--border); }

/* ---- Pillar list (V3 style) ---- */
.pillar-list { display: grid; gap: .6rem; }
.pillar {
  display: flex; gap: 1.2rem; align-items: flex-start;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem 1.6rem;
}
.pillar .n {
  font-family: var(--mono); font-size: .85rem;
  color: var(--accent); letter-spacing: .1em;
  min-width: 2.4rem; padding-top: .2rem;
}
.pillar h3 { font-size: 1.08rem; margin: 0 0 .3rem; font-weight: 500; }
.pillar p { margin: 0; color: var(--text-muted); font-size: .92rem; }

/* ---- Level head ---- */
.level-head { display: flex; align-items: center; gap: .9rem; margin: 2.6rem 0 1.4rem; }
.level-head .pill { background: var(--accent); color: #0A0C10; border-radius: 999px; padding: .25rem .8rem; font-size: .78rem; font-weight: 600; font-family: var(--mono); letter-spacing: .04em; }
.level-head h2 { margin: 0; font-size: 1.45rem; }

/* ---- Contact / form ---- */
.form { display: grid; gap: 1.1rem; }
.form label { display: block; font-family: var(--mono); font-size: .78rem; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; margin-bottom: .35rem; color: var(--text-muted); }
.form input, .form textarea, .form select {
  width: 100%; padding: .75rem 1rem; font: inherit;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--ink-800); color: var(--text);
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--accent); }
.form .honeypot { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }
.form-status { display: none; padding: .8rem 1rem; border-radius: 8px; font-size: .92rem; }
.form-status.ok { display: block; background: rgba(22, 163, 74, .1); color: #4ade80; border: 1px solid rgba(22, 163, 74, .2); }
.form-status.err { display: block; background: rgba(220, 38, 38, .1); color: #f87171; border: 1px solid rgba(220, 38, 38, .2); }
.form-status.sending { display: block; background: var(--accent-soft); color: var(--accent); border: 1px solid rgba(77, 159, 255, .2); }

.contact-block { display: grid; gap: 1rem; }
.contact-item { display: flex; gap: .9rem; align-items: center; padding: 1rem 1.2rem; border: 1px solid var(--border); border-radius: 12px; background: var(--surface-soft); }
.contact-item .icon { font-size: 1.2rem; color: var(--accent); }

/* ---- Chips ---- */
.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip { padding: .35rem .8rem; border-radius: 999px; border: 1px solid var(--border); font-family: var(--mono); font-size: .78rem; color: var(--text-muted); background: var(--surface-soft); }

/* ---- Table ---- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { padding: .75rem 1rem; text-align: left; border-bottom: 1px solid var(--border); }
th { font-family: var(--mono); font-weight: 500; color: var(--text-dim); font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; }

/* ---- Reveal on scroll ---- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .08s; }
.reveal-delay-2 { transition-delay: .16s; }
.reveal-delay-3 { transition-delay: .24s; }
.reveal-delay-4 { transition-delay: .32s; }

/* ---- SVG animations ---- */
@keyframes flow-dash {
  to { stroke-dashoffset: -200; }
}
@keyframes pulse-node {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.08); opacity: .85; }
}
@keyframes fade-loop {
  0%, 100% { opacity: 0; }
  20%, 80% { opacity: 1; }
}
@keyframes rotate-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes packet-in-1 {
  0%, 8% { transform: translate(202px, 252px); opacity: 0; }
  20% { opacity: 1; }
  64% { transform: translate(267px, 292px); opacity: 1; }
  78%, 100% { transform: translate(267px, 292px) scale(.7); opacity: 0; }
}
@keyframes packet-in-2 {
  0%, 8% { transform: translate(201px, 300px); opacity: 0; }
  20% { opacity: 1; }
  64% { transform: translate(267px, 300px); opacity: 1; }
  78%, 100% { transform: translate(267px, 300px) scale(.7); opacity: 0; }
}
@keyframes packet-in-3 {
  0%, 8% { transform: translate(202px, 348px); opacity: 0; }
  20% { opacity: 1; }
  64% { transform: translate(267px, 308px); opacity: 1; }
  78%, 100% { transform: translate(267px, 308px) scale(.7); opacity: 0; }
}
@keyframes knowledge-out-1 {
  0%, 14% { transform: translate(344px, 276px) scale(.75); opacity: 0; }
  28% { opacity: 1; }
  74% { transform: translate(390px, 278px); opacity: 1; }
  88%, 100% { transform: translate(401px, 278px) scale(.75); opacity: 0; }
}
@keyframes knowledge-out-2 {
  0%, 14% { transform: translate(344px, 300px) scale(.75); opacity: 0; }
  28% { opacity: 1; }
  74% { transform: translate(390px, 300px); opacity: 1; }
  88%, 100% { transform: translate(401px, 300px) scale(.75); opacity: 0; }
}
@keyframes knowledge-out-3 {
  0%, 14% { transform: translate(344px, 324px) scale(.75); opacity: 0; }
  28% { opacity: 1; }
  74% { transform: translate(390px, 322px); opacity: 1; }
  88%, 100% { transform: translate(401px, 322px) scale(.75); opacity: 0; }
}
@keyframes transfer-pulse {
  0%, 100% { opacity: .12; transform: translateX(-2px); }
  45% { opacity: 1; transform: translateX(3px); }
}
@keyframes core-wave {
  0%, 100% { transform: scale(.78); opacity: 0; }
  45% { opacity: .28; }
  80% { transform: scale(1.22); opacity: 0; }
}
@keyframes training-cycle {
  to { stroke-dashoffset: -42; }
}
@keyframes capability-signal {
  0%, 100% { opacity: .12; transform: scale(.7); }
  48% { opacity: 1; transform: scale(1.3); }
}

.flow-line {
  stroke-dasharray: 6 10;
  animation: flow-dash 4s linear infinite;
}
/* ============================================================
   V3 EXTENDED COMPONENTS — SOLUTIONS, REALISATIONS, FORMATIONS, LAB
   ============================================================ */

/* ---- Filters & Tab Navigation ---- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin: 2rem 0 2.5rem;
  padding: .4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 99px;
  width: fit-content;
}
.filter-btn {
  padding: .5rem 1.2rem;
  border-radius: 99px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: .88rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s ease;
  font-family: inherit;
}
.filter-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, .04);
}
.filter-btn.active {
  background: var(--violet-700);
  color: #ffffff;
  border-color: var(--violet-600);
  box-shadow: 0 4px 12px rgba(124, 58, 237, .25);
}

/* ---- Solution Cards (Problème / Réponse) ---- */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2rem;
  margin: 2.5rem 0;
}
.solution-card-v3 {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.solution-card-v3:hover {
  transform: translateY(-4px);
  border-color: var(--violet-500);
  box-shadow: 0 16px 32px -12px rgba(0, 0, 0, .4);
}
.solution-card-v3 .card-badge {
  font-family: var(--font-mono);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--copper-400);
  margin-bottom: .8rem;
}
.solution-card-v3 .card-title {
  font-size: 1.35rem;
  margin: 0 0 .5rem;
  line-height: 1.3;
}
.solution-card-v3 .card-tagline {
  color: var(--violet-400);
  font-size: .92rem;
  font-weight: 500;
  margin-bottom: 1.2rem;
}
.solution-card-v3 .problem-box {
  background: rgba(255, 255, 255, .02);
  border-left: 3px solid var(--copper-500);
  padding: .8rem 1rem;
  border-radius: 0 8px 8px 0;
  margin: 1rem 0 1.5rem;
  font-size: .88rem;
  color: var(--text-muted);
}
.solution-card-v3 .problem-box b {
  color: var(--text);
}
.solution-card-v3 .deliverables-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.8rem;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  font-size: .88rem;
}
.solution-card-v3 .deliverables-list li {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  color: var(--text-muted);
}
.solution-card-v3 .deliverables-list li .ic {
  color: var(--violet-400);
  flex-shrink: 0;
  margin-top: .15rem;
}
.solution-card-v3 .card-footer {
  margin-top: auto;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ---- Realisations / Case Study Cards ---- */
.realisations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 2rem;
  margin: 2.5rem 0;
}
.case-card-v3 {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, border-color .25s ease;
}
.case-card-v3:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
}
.case-card-v3 .case-head {
  padding: 1.8rem 1.8rem 1.2rem;
}
.case-card-v3 .case-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: .8rem;
  font-size: .78rem;
  font-family: var(--font-mono);
}
.case-card-v3 .case-title {
  font-size: 1.35rem;
  margin: 0 0 .4rem;
}
.case-card-v3 .case-sub {
  color: var(--violet-400);
  font-size: .92rem;
  margin: 0 0 1rem;
}
.case-card-v3 .case-metrics-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .8rem;
  padding: 1.2rem 1.8rem;
  background: rgba(0, 0, 0, .2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.case-card-v3 .case-metric .num {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
}
.case-card-v3 .case-metric .lbl {
  font-size: .75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.case-card-v3 .case-body {
  padding: 1.4rem 1.8rem;
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.case-card-v3 .lesson-box {
  margin: 1rem 0;
  padding: .8rem 1rem;
  background: rgba(124, 58, 237, .06);
  border-left: 3px solid var(--violet-500);
  border-radius: 0 8px 8px 0;
  font-size: .84rem;
  color: var(--text);
}
.case-card-v3 .case-foot {
  margin-top: auto;
  padding: 1.2rem 1.8rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ---- Formations & Parcours Cards ---- */
.parcours-grid-v3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2rem;
  margin: 2.5rem 0;
}
.parcours-card-v3 {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform .25s ease, border-color .25s ease;
}
.parcours-card-v3:hover {
  transform: translateY(-4px);
  border-color: var(--violet-500);
}
.parcours-card-v3 .parcours-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--surface-2);
  position: absolute;
  top: 1.5rem;
  right: 1.8rem;
  line-height: 1;
}
.parcours-card-v3 .parcours-title {
  font-size: 1.35rem;
  margin: 0 0 .5rem;
  padding-right: 3rem;
}
.parcours-card-v3 .parcours-desc {
  font-size: .92rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.55;
}
.parcours-card-v3 .modules-timeline {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  margin-bottom: 2rem;
  padding-left: .5rem;
  border-left: 2px solid var(--border);
}
.parcours-card-v3 .module-item {
  padding-left: .8rem;
  position: relative;
  font-size: .88rem;
}
.parcours-card-v3 .module-item::before {
  content: "";
  position: absolute;
  left: -0.65rem;
  top: .4rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--violet-500);
}
.parcours-card-v3 .module-item .code {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--copper-400);
  margin-right: .4rem;
}
.parcours-card-v3 .parcours-footer {
  margin-top: auto;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ---- EA Lab & Research Notes ---- */
.lab-hero-banner {
  background: linear-gradient(135deg, rgba(124, 58, 237, .12) 0%, rgba(217, 119, 6, .08) 100%), var(--ink-950);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3rem;
  margin: 2rem 0 3.5rem;
  position: relative;
  overflow: hidden;
}
.lab-hero-banner::after {
  content: "EA LAB // R&D";
  position: absolute;
  right: 2rem;
  bottom: 1.5rem;
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 800;
  color: rgba(255, 255, 255, .03);
  pointer-events: none;
}
.research-notes-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 2rem 0;
}
.rn-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.6rem 2rem;
  display: grid;
  grid-template-columns: 100px 1fr auto;
  align-items: center;
  gap: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: all .2s ease;
}
.rn-card:hover {
  border-color: var(--violet-500);
  background: var(--surface-2);
  transform: translateX(4px);
}
.rn-card .rn-code {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--copper-400);
}
.rn-card .rn-title {
  font-size: 1.1rem;
  margin: 0 0 .3rem;
}
.rn-card .rn-desc {
  font-size: .88rem;
  color: var(--text-muted);
  margin: 0;
}
.rn-card .rn-arrow {
  color: var(--violet-400);
  font-size: 1.2rem;
}

/* ---- Blueprint / Code Showcase ---- */
.blueprint-box {
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 12px;
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  color: #e6edf3;
  overflow-x: auto;
  line-height: 1.5;
  margin: 1.5rem 0;
}

/* ---- Node Animation & Pulse ---- */
.node-pulse {
  transform-origin: center;
  animation: pulse-node 2.8s ease-in-out infinite;
}
.fade-loop {
  animation: fade-loop 6s ease-in-out infinite;
}
.rotate-slow {
  transform-origin: center;
  animation: rotate-slow 30s linear infinite;
}
.logic-packet, .knowledge-packet { opacity: 0; transform-box: fill-box; transform-origin: center; }
.logic-packet--1 { animation: packet-in-1 5.4s ease-in-out infinite; }
.logic-packet--2 { animation: packet-in-2 5.4s ease-in-out 1.15s infinite; }
.logic-packet--3 { animation: packet-in-3 5.4s ease-in-out 2.3s infinite; }
.knowledge-packet--1 { animation: knowledge-out-1 6s ease-in-out .6s infinite; }
.knowledge-packet--2 { animation: knowledge-out-2 6s ease-in-out 2s infinite; }
.knowledge-packet--3 { animation: knowledge-out-3 6s ease-in-out 3.4s infinite; }
.transfer-pulse { animation: transfer-pulse 1.35s ease-in-out infinite; }
.core-wave { transform-box: fill-box; transform-origin: center; animation: core-wave 3.2s ease-out infinite; }
.training-loop { stroke-dasharray: 5 8; animation: training-cycle 3s linear infinite; }
.capability-signals circle { transform-box: fill-box; transform-origin: center; animation: capability-signal 3.4s ease-in-out infinite; }
.capability-signals circle:nth-child(2) { animation-delay: .8s; }
.capability-signals circle:nth-child(3) { animation-delay: 1.6s; }
.capability-signals circle:nth-child(4) { animation-delay: 2.4s; }

/* ---- Responsive ---- */
@media (max-width: 1100px) {
  .site-footer .grid { grid-template-columns: 1fr 1fr; }
  .lab-head { grid-template-columns: 1fr; gap: 1rem; }
  .method { grid-template-columns: repeat(3, 1fr); }
  .method::before { display: none; }
}
@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; gap: 2rem; }
  .hero-visual { max-height: 430px; transform: none; }
  .hero-partner { grid-column: auto; margin-top: 0; }
  .dual { grid-template-columns: 1fr; }
  .dual-block--agency { border-right: 1px solid var(--border); border-bottom: none; }
  .dual-block--training { border-left: 1px solid var(--border); }
  .case-grid { grid-template-columns: 1fr; }
  .works .work--lg, .works .work--md, .works .work--sm, .works .work--xl, .works .work--xs {
    grid-column: span 12;
  }
  .formations-env { grid-template-columns: 1fr; }
  .case-proofs { grid-template-columns: 1fr; }
  .solution-row { grid-template-columns: 60px 1fr 40px; }
  .solution-row .tags { display: none; }
  .method { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .proof-band .counters { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
}
@media (max-width: 640px) {
  .section { padding: 3.5rem 0; }
  .hero { padding: 2.75rem 0 2.5rem; }
  .site-header .container { height: 64px; }
  .site-header .brand-logo { width: 148px; height: 52px; }
  .site-header .brand .brand-sub { display: none; }
  .site-nav {
    display: none;
    position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: .2rem;
    background: var(--ink-900); border-bottom: 1px solid var(--border);
    padding: .8rem 1.2rem 1.2rem;
    box-shadow: 0 12px 24px -12px rgba(0,0,0,.5);
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: .6rem 0; }
  .site-nav .btn { margin-top: .4rem; }
  .menu-toggle { display: block; }
  .form input, .form textarea { padding: .6rem .7rem; }
  .contact-item { padding: .8rem 1rem; }
  .ml-panel { bottom: 5rem; right: .6rem; width: calc(100vw - 1.2rem); }
  .ml-fab { width: 54px; height: 54px; }
  .ml-fab .ml-fab-txt { display: none; }
  .table-wrap th, .table-wrap td { padding: .5rem .6rem; font-size: .85rem; }
  .proof-band .counters { grid-template-columns: 1fr 1fr; }
  .hero-partner { align-items: stretch; flex-direction: column; gap: 1rem; padding-top: 1.2rem; }
  .partner-join { display: none; }
  .qualiopi-mark { padding: 1rem 0 0; border-left: 0; border-top: 1px solid var(--rule); }
  .counter .num { font-size: 2rem; }
  .method { grid-template-columns: 1fr; }
  .work .work-visual, .work .work-visual--dual { position: relative; right: auto; bottom: auto; width: 100%; height: 150px; margin-top: 1.2rem; order: 3; }
  .work .work-link { order: 4; }
}

/* ---- Prefers-reduced-motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}