/* ============================================
   Accueil : du mouvement et une couleur affirmée
   Même charte : Geist, Instrument Serif italique, noir et blanc, et le bleu UMOPIA
   ============================================ */
:root {
  --bleu: oklch(0.6 0.19 258);          /* bleu UMOPIA, lisible avec du texte blanc */
  --bleu-clair: oklch(0.72 0.16 250);   /* le bleu de la ligne de la bannière */
  --violet: oklch(0.62 0.22 280);
  --bleu-voile: oklch(0.72 0.16 250 / 0.09);
  --bleu-voile-2: oklch(0.72 0.16 250 / 0.16);
}
main { position: relative; }
.a3-sec { position: relative; }
.a3-sec > .wrap { position: relative; z-index: 2; }

/* Liens et puces communs */
.a3-lien { display: inline-flex; align-items: center; gap: 8px; font-size: 14.5px; font-weight: 500; color: var(--fg); text-decoration: none; border-bottom: 1px solid var(--line-strong); padding-bottom: 2px; transition: gap .2s, border-color .2s; }
.a3-lien:hover { gap: 11px; border-color: var(--fg); }
.a3-puce { display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px 5px 5px; border-radius: 999px; background: var(--bg-elev); border: 1px solid var(--line); font-size: 13.5px; font-weight: 500; color: var(--fg); text-decoration: none; transition: border-color .2s, transform .2s; }
.a3-puce:hover { border-color: var(--fg); transform: translateY(-1px); }
.a3-puce__logo { flex: none; width: 26px; height: 26px; border-radius: 8px; overflow: hidden; display: inline-flex; align-items: center; justify-content: center; background: #fff; border: 1px solid var(--line); }
.a3-puce__logo img { width: 100%; height: 100%; object-fit: contain; }
.a3-puce__logo--complet { width: auto; min-width: 26px; padding: 0 4px; }
.a3-puce__logo--complet img { width: auto; height: 16px; }

/* ============ Le fil bleu qui relie les sections (ordinateur) ============ */
.a3-fil { position: absolute; left: 0; top: 0; width: 100%; height: 100%; pointer-events: none; z-index: 3; overflow: visible; }
.a3-fil__fond { fill: none; stroke: var(--line-strong); stroke-width: 1.5; stroke-dasharray: 3 7; }
.a3-fil__trait { fill: none; stroke: url(#a3-fil-degrade); stroke-width: 2.5; stroke-linecap: round; }
.a3-fil__points circle { fill: var(--bg); stroke: var(--line-strong); stroke-width: 2; transition: fill .4s, stroke .4s, r .4s; }
.a3-fil__points circle.is-on { fill: var(--bleu-clair); stroke: var(--bleu-clair); }
.a3-fil__points circle.is-on + circle { opacity: .35; }
.a3-fil__points .a3-fil__onde { fill: none; stroke: var(--bleu-clair); stroke-width: 1.5; opacity: 0; }
@media (max-width: 1100px) { .a3-fil { display: none; } }

/* ============ Problèmes, variante A : explorateur ============ */
.a3-expl { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(24px, 3vw, 48px); align-items: start; }
.a3-expl__liste { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.a3-expl__item { border-bottom: 1px solid var(--line); }
.a3-expl__item button { position: relative; width: 100%; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 16px; padding: 22px 8px 22px 0; border: 0; background: none; text-align: left; font: inherit; color: var(--fg-dim); cursor: pointer; transition: color .3s, padding .35s cubic-bezier(.2,.7,.2,1); }
.a3-expl__t { font-family: var(--font-display); font-weight: 500; font-size: clamp(19px, 1.7vw, 24px); letter-spacing: -.02em; line-height: 1.25; }
.a3-expl__court { font-size: 13px; padding: 4px 10px; border-radius: 999px; border: 1px solid var(--line); white-space: nowrap; transition: background .3s, color .3s, border-color .3s; }
.a3-expl__barre { position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; overflow: hidden; }
.a3-expl__barre i { display: block; height: 100%; width: 100%; background: linear-gradient(90deg, var(--bleu-clair), var(--violet)); transform: scaleX(0); transform-origin: 0 50%; }
.a3-expl__item button:hover { color: var(--fg-muted); }
.a3-expl__item.is-on button { color: var(--fg); padding-left: 18px; }
.a3-expl__item.is-on button::before { content: ""; position: absolute; left: 0; top: 50%; width: 6px; height: 6px; margin-top: -3px; border-radius: 50%; background: var(--bleu-clair); box-shadow: 0 0 0 5px var(--bleu-voile-2); }
.a3-expl__item.is-on .a3-expl__court { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.a3-expl__item.is-on .a3-expl__barre i { animation: a3-barre var(--duree, 6s) linear forwards; }
.a3-expl.is-pause .a3-expl__item.is-on .a3-expl__barre i, .a3-expl.is-fige .a3-expl__item.is-on .a3-expl__barre i { animation-play-state: paused; }
.a3-expl.is-fige .a3-expl__barre { display: none; }
@keyframes a3-barre { to { transform: scaleX(1); } }
.a3-expl__item button:focus-visible { outline: 2px solid var(--bleu-clair); outline-offset: 2px; }

.a3-expl__droite { position: sticky; top: 110px; min-height: 480px; border-radius: 28px; padding: clamp(26px, 3vw, 40px); background: var(--bg-elev); border: 1px solid var(--line); overflow: hidden; box-shadow: 0 50px 100px -70px rgba(10,10,30,.45); }
.a3-expl__halo { position: absolute; inset: -30%; background: radial-gradient(40% 40% at var(--hx, 80%) var(--hy, 10%), var(--bleu-voile-2), transparent 70%), radial-gradient(35% 35% at calc(100% - var(--hx, 80%)) 100%, oklch(0.62 0.22 280 / .08), transparent 70%); transition: --hx 1s; pointer-events: none; }
.a3-expl__pan { position: relative; animation: a3-monter .5s cubic-bezier(.2,.7,.2,1) both; }
.a3-expl__desc { margin: 0; font-family: var(--font-display); font-weight: 500; font-size: clamp(20px, 1.9vw, 26px); letter-spacing: -.02em; line-height: 1.35; }
.a3-expl__lbl { margin: 26px 0 14px; font-size: 14px; font-weight: 600; color: var(--bleu); }
.a3-expl__fixes { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.a3-expl__fixes li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start; font-size: 14.5px; line-height: 1.5; color: var(--fg-muted); animation: a3-monter .5s cubic-bezier(.2,.7,.2,1) both; }
.a3-expl__fixes li:nth-child(2) { animation-delay: .06s; } .a3-expl__fixes li:nth-child(3) { animation-delay: .12s; } .a3-expl__fixes li:nth-child(4) { animation-delay: .18s; }
.a3-expl__fixes svg { margin-top: 2px; width: 18px; height: 18px; padding: 2px; border-radius: 6px; color: #fff; background: var(--bleu); }
.a3-expl__fixes b { display: block; color: var(--fg); font-weight: 600; }
.a3-expl__pied { margin-top: 28px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.a3-expl__deja { font-size: 13.5px; color: var(--fg-muted); margin-right: 4px; }
.a3-expl__plus { margin-left: auto; display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 14.5px; color: var(--bleu); text-decoration: none; }
.a3-expl__plus:hover { gap: 11px; }
@keyframes a3-monter { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ============ Méthode racontée sur un vrai cas ============ */
.a3-recit { margin-top: 48px; height: 290vh; }
.a3-recit__scene { position: sticky; top: 96px; height: calc(100vh - 120px); min-height: 520px; max-height: 760px; display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(28px, 4vw, 64px); align-items: center; }
.a3-recit__etapes { position: relative; list-style: none; margin: 0; padding: 0 0 0 34px; display: grid; gap: 30px; }
.a3-recit__rail { position: absolute; left: 6px; top: 6px; bottom: 6px; width: 2px; border-radius: 2px; background: var(--line-strong); }
.a3-recit__rail i { position: absolute; inset: 0; border-radius: 2px; background: linear-gradient(180deg, var(--bleu-clair), var(--violet)); transform-origin: 50% 0; transform: scaleY(var(--p, 0)); }
.a3-recit__etape { position: relative; opacity: .35; transition: opacity .45s, transform .45s; }
.a3-recit__etape::before { content: ""; position: absolute; left: -34px; top: 5px; width: 14px; height: 14px; border-radius: 50%; background: var(--bg); border: 2px solid var(--line-strong); transition: background .4s, border-color .4s, box-shadow .4s; }
.a3-recit__etape.is-fait { opacity: .6; }
.a3-recit__etape.is-fait::before, .a3-recit__etape.is-on::before { background: var(--bleu-clair); border-color: var(--bleu-clair); }
.a3-recit__etape.is-on { opacity: 1; transform: translateX(6px); }
.a3-recit__etape.is-on::before { box-shadow: 0 0 0 6px var(--bleu-voile-2); }
.a3-recit__num { font-family: var(--font-display); font-weight: 500; font-size: 15px; color: var(--bleu); }
.a3-recit__etape h3 { margin: 0; font-family: var(--font-display); font-weight: 500; font-size: clamp(22px, 2vw, 28px); letter-spacing: -.025em; }
.a3-recit__etape p { margin: 8px 0 0; font-size: 15px; line-height: 1.55; color: var(--fg-muted); max-width: 44ch; }
.a3-recit__res { display: flex; gap: 8px; align-items: flex-start; font-weight: 600; color: var(--fg) !important; }
.a3-recit__res svg { flex: none; margin-top: 3px; color: var(--bleu); }
.a3-recit__vis { position: relative; height: 100%; display: flex; flex-direction: column; justify-content: center; gap: 16px; border-radius: 30px; padding: clamp(22px, 3vw, 40px); background: radial-gradient(90% 70% at 100% 0%, var(--bleu-voile-2), transparent 60%), radial-gradient(70% 60% at 0% 100%, oklch(0.62 0.22 280 / .07), transparent 60%), var(--bg-elev-2); border: 1px solid var(--line); overflow: hidden; }
.a3-recit__vis::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 34px 34px; -webkit-mask-image: radial-gradient(closest-side, #000, transparent); mask-image: radial-gradient(closest-side, #000, transparent); transform: translateY(calc(var(--p, 0) * -60px)); }
.a3-recit__cas { position: relative; margin: 0; display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--fg-muted); }
.a3-recit__cas b { color: var(--fg); }
.a3-recit__couches { position: relative; flex: 1; display: grid; }
.a3-couche { grid-area: 1 / 1; align-self: center; opacity: 0; transform: translateY(24px) scale(.98); transition: opacity .55s, transform .7s cubic-bezier(.2,.7,.2,1); pointer-events: none; }
.a3-couche.is-on { opacity: 1; transform: none; pointer-events: auto; }
.a3-carte-vis { max-width: 460px; margin: 0 auto; padding: 24px; border-radius: 22px; background: var(--bg-elev); border: 1px solid var(--line); box-shadow: 0 40px 80px -45px rgba(10,10,30,.45); }
.a3-carte-vis__tete { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.a3-carte-vis__tete b { font-size: 16px; font-weight: 600; }
.a3-constats { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.a3-constats li { display: grid; grid-template-columns: 14px 1fr; gap: 12px; align-items: start; padding: 12px 14px; border-radius: 14px; background: var(--bg-elev-2); font-size: 14.5px; line-height: 1.45; opacity: 0; transform: translateX(-10px); transition: opacity .45s, transform .45s; }
.a3-constats li i { margin-top: 5px; width: 9px; height: 9px; border-radius: 50%; background: oklch(0.6 0.19 25); box-shadow: 0 0 0 4px oklch(0.6 0.19 25 / .15); }
.is-on .a3-constats li { opacity: 1; transform: none; }
.is-on .a3-constats li:nth-child(2) { transition-delay: .15s; } .is-on .a3-constats li:nth-child(3) { transition-delay: .3s; }
.a3-gains { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.a3-gains li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start; font-size: 15px; line-height: 1.45; }
.a3-gains svg { margin-top: 1px; width: 20px; height: 20px; padding: 3px; border-radius: 50%; color: #fff; background: oklch(0.6 0.14 155); }
.a3-carte-vis .a3-gains li { padding: 12px 14px; border-radius: 14px; background: var(--bg-elev-2); opacity: 0; transform: translateY(8px); transition: opacity .45s, transform .45s; }
.is-on .a3-carte-vis .a3-gains li { opacity: 1; transform: none; }
.is-on .a3-carte-vis .a3-gains li:nth-child(2) { transition-delay: .15s; } .is-on .a3-carte-vis .a3-gains li:nth-child(3) { transition-delay: .3s; }
.a3-carte-vis .a3-lien { margin-top: 18px; }

/* ============ Schémas de flux (méthode et systèmes) ============ */
.a3-flux { position: relative; display: grid; grid-template-columns: repeat(calc(var(--n, 4) * 2 - 1), auto); grid-auto-flow: column; align-items: center; justify-content: space-between; gap: 0; }
.a3-flux__n { position: relative; z-index: 1; width: clamp(130px, 13vw, 176px); padding: 16px; border-radius: 18px; background: var(--bg-elev); border: 1px solid var(--line); box-shadow: 0 24px 48px -32px rgba(10,10,30,.4); display: grid; gap: 6px; opacity: 0; transform: translateY(14px); transition: opacity .5s, transform .6s cubic-bezier(.2,.7,.2,1), border-color .3s; transition-delay: calc(var(--k) * .22s); }
.a3-flux__ic { width: 38px; height: 38px; border-radius: 12px; display: flex; align-items: center; justify-content: center; color: #fff; background: linear-gradient(135deg, var(--c2, var(--bleu-clair)), var(--bleu)); margin-bottom: 4px; }
.a3-flux__n b { font-size: 14.5px; font-weight: 600; line-height: 1.3; }
.a3-flux__n small { font-size: 12.5px; color: var(--fg-muted); line-height: 1.35; }
.a3-flux__lien { position: relative; height: 2px; min-width: 24px; background: var(--line-strong); overflow: visible; }
.a3-flux__lien i { position: absolute; top: 50%; left: 0; width: 9px; height: 9px; margin-top: -4.5px; border-radius: 50%; background: var(--bleu-clair); box-shadow: 0 0 0 4px var(--bleu-voile-2); opacity: 0; }
.is-on .a3-flux__n, .a3-sys__pan:not([hidden]) .a3-flux__n { opacity: 1; transform: none; }
.is-on .a3-flux__lien i, .a3-sys__pan:not([hidden]) .a3-flux__lien i { animation: a3-voyage 2.2s cubic-bezier(.5,0,.5,1) infinite; animation-delay: calc(.6s + var(--k) * .35s); }
@keyframes a3-voyage { 0% { left: 0; opacity: 0; } 15% { opacity: 1; } 85% { opacity: 1; } 100% { left: calc(100% - 9px); opacity: 0; } }
.a3-flux--vertical { grid-template-columns: auto; grid-auto-flow: row; justify-content: center; justify-items: center; }
.a3-flux--vertical .a3-flux__n { width: min(100%, 340px); grid-template-columns: 38px 1fr; column-gap: 12px; align-items: center; padding: 12px 16px; }
.a3-flux--vertical .a3-flux__ic { grid-row: span 2; margin: 0; }
.a3-flux--vertical .a3-flux__lien { width: 2px; height: 22px; min-width: 0; }
.a3-flux--vertical .a3-flux__lien i { left: 50%; margin-left: -4.5px; top: 0; margin-top: 0; }
.is-on .a3-flux--vertical .a3-flux__lien i { animation-name: a3-voyage-v; }
@keyframes a3-voyage-v { 0% { top: 0; opacity: 0; } 15% { opacity: 1; } 85% { opacity: 1; } 100% { top: calc(100% - 9px); opacity: 0; } }

/* ============ Systèmes construits pour les clients ============ */
.a3-sys-sec::before { content: ""; position: absolute; inset: 0; z-index: 0; background: radial-gradient(50% 40% at 85% 30%, var(--bleu-voile), transparent 70%), radial-gradient(40% 40% at 10% 80%, oklch(0.62 0.22 280 / .05), transparent 70%); }
.a3-sys { margin-top: 48px; }
.a3-sys__onglets { display: flex; flex-wrap: wrap; gap: 8px; }
.a3-sys__onglets button { position: relative; display: inline-flex; align-items: center; gap: 10px; padding: 8px 16px 8px 8px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg-elev); font: inherit; font-size: 14.5px; font-weight: 500; color: var(--fg-muted); cursor: pointer; overflow: hidden; transition: color .25s, border-color .25s, box-shadow .25s; }
.a3-sys__onglets button:hover { color: var(--fg); border-color: var(--line-strong); }
.a3-sys__onglets button.is-on { color: var(--fg); border-color: var(--fg); box-shadow: 0 10px 24px -14px rgba(10,10,30,.4); }
.a3-sys__barre { position: absolute; left: 0; bottom: 0; height: 2px; width: 100%; background: var(--c2, var(--bleu-clair)); transform: scaleX(0); transform-origin: 0 50%; }
.a3-sys__onglets button.is-on .a3-sys__barre { animation: a3-barre var(--duree, 7s) linear forwards; }
.a3-sys.is-pause .a3-sys__barre, .a3-sys.is-fige .a3-sys__barre { animation-play-state: paused !important; }
.a3-sys.is-fige .a3-sys__barre { display: none; }
.a3-sys__onglets button:focus-visible { outline: 2px solid var(--bleu-clair); outline-offset: 2px; }
.a3-sys__pan { position: relative; margin-top: 18px; padding: clamp(24px, 3.4vw, 44px); border-radius: 30px; background: var(--bg-elev); border: 1px solid var(--line); box-shadow: 0 50px 100px -70px rgba(10,10,30,.45); overflow: hidden; animation: a3-monter .5s cubic-bezier(.2,.7,.2,1) both; }
.a3-sys__pan::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: linear-gradient(90deg, var(--c1), var(--c2)); }
.a3-sys__tete { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 24px; align-items: start; }
.a3-sys__tete b { display: block; font-family: var(--font-display); font-weight: 500; font-size: clamp(26px, 2.6vw, 36px); letter-spacing: -.03em; }
.a3-sys__tete span { font-size: 14px; color: var(--fg-muted); }
.a3-sys__tete p { margin: 6px 0 0; font-size: 16.5px; line-height: 1.55; color: var(--fg-muted); }
.a3-sys__pan .a3-flux { margin: 36px 0 32px; padding: 30px 24px; border-radius: 22px; background: var(--bg-elev-2); }
.a3-sys__pan .a3-flux__ic { background: linear-gradient(135deg, var(--c2), color-mix(in oklab, var(--c2) 55%, #000)); }
.a3-sys__pan .a3-flux__lien i { background: var(--c2); box-shadow: 0 0 0 4px color-mix(in oklab, var(--c2) 22%, transparent); }
.a3-sys__pied { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
.a3-gains--ligne { display: flex; flex-wrap: wrap; gap: 10px 24px; }

/* ============ Projets en pile (repris de la V2) ============ */
.a2-coches { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.a2-coches li { display: grid; grid-template-columns: 18px 1fr; gap: 10px; align-items: start; font-size: 15px; line-height: 1.5; }
.a2-coches svg { margin-top: 3px; color: var(--bleu); }
.a2-lien { display: inline-flex; align-items: center; gap: 8px; font-size: 14.5px; font-weight: 500; color: var(--fg); text-decoration: none; border-bottom: 1px solid var(--line-strong); padding-bottom: 2px; transition: border-color .2s, gap .2s; }
.a2-lien:hover { border-color: var(--fg); gap: 11px; }
.a2-ext { transform: rotate(-45deg); }
.a2-logo { flex: none; width: 56px; height: 56px; border-radius: 15px; overflow: hidden; display: flex; align-items: center; justify-content: center; background: #fff; border: 1px solid var(--line); box-shadow: 0 10px 24px -14px rgba(10,10,30,.35); }
.a2-logo img { width: 100%; height: 100%; object-fit: contain; }
.a2-logo--complet { width: auto; min-width: 56px; padding: 0 12px; }
.a2-logo--complet img { width: auto; height: 30px; }
.a2-ecran { position: relative; border-radius: 14px; overflow: hidden; background: var(--bg-elev); border: 1px solid var(--line-strong); box-shadow: 0 40px 80px -40px rgba(10,10,30,.45); }
.a2-ecran__barre { height: 30px; display: flex; align-items: center; gap: 6px; padding: 0 12px; background: var(--bg-elev-2); border-bottom: 1px solid var(--line); }
.a2-ecran__barre i { width: 9px; height: 9px; border-radius: 50%; background: var(--fg-faint); }
.a2-ecran__barre span { margin: 0 auto; transform: translateX(-16px); font-size: 11.5px; color: var(--fg-dim); background: var(--bg-elev); border: 1px solid var(--line); border-radius: 999px; padding: 2px 14px; }
.a2-ecran img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; object-position: top; }
.a2-tel { position: absolute; border-radius: 26px; overflow: hidden; background: #0A0A0B; padding: 5px; box-shadow: 0 30px 60px -24px rgba(10,10,30,.55); }
.a2-tel img { display: block; width: 100%; height: auto; aspect-ratio: 390 / 844; object-fit: cover; object-position: top; border-radius: 21px; }
.a2-pile { margin-top: 48px; display: grid; gap: 28px; }
.a2-proj { position: sticky; top: calc(96px + var(--i) * 16px); display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(24px, 4vw, 60px); align-items: center; padding: clamp(26px, 3.6vw, 48px); border-radius: 30px; border: 1px solid var(--line); background: var(--bg-elev); box-shadow: 0 -20px 60px -40px rgba(10,10,30,.25), 0 40px 80px -60px rgba(10,10,30,.4); overflow: hidden; min-height: 520px; }
.a2-proj::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: linear-gradient(90deg, var(--c1), var(--c2)); }
.a2-proj::after { content: ""; position: absolute; right: -10%; top: -20%; width: 60%; height: 90%; border-radius: 50%; background: radial-gradient(closest-side, var(--c2), transparent); opacity: .12; pointer-events: none; }
.a2-proj__id { display: flex; align-items: center; gap: 14px; }
.a2-proj__secteur { font-size: 14px; color: var(--fg-muted); }
.a2-proj h3 { margin: 18px 0 0; font-family: var(--font-display); font-weight: 500; font-size: clamp(30px, 3.2vw, 46px); letter-spacing: -.035em; line-height: 1.02; }
.a2-proj__besoin { margin: 14px 0 20px; font-size: 16px; line-height: 1.6; color: var(--fg-muted); }
.a2-proj__besoin b { color: var(--fg); font-weight: 600; }
.a2-proj__tags { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 6px; }
.a2-proj__tags span { font-size: 12.5px; padding: 4px 11px; border-radius: 999px; background: var(--bg-elev-2); color: var(--fg-muted); border: 1px solid var(--line); }
.a2-proj__liens { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 22px; }
.a2-proj__vis { position: relative; padding: 0 0 8% 8%; }
.a2-proj__vis .a2-tel { left: 0; bottom: 0; width: 26%; transform: rotate(-3deg); }
.a2-projets .work__foot { margin-top: 44px; }

/* ============ Outils gratuits ============ */
.a3-outils { margin-top: 44px; }
.a3-outils__barre { display: flex; align-items: center; gap: 4px; max-width: 720px; margin: 0 auto 22px; padding: 8px 8px 8px 22px; border-radius: 999px; background: var(--bg-elev); border: 1px solid var(--line-strong); box-shadow: 0 30px 60px -40px rgba(10,10,30,.4); transition: border-color .25s, box-shadow .25s; cursor: text; }
.a3-outils__barre:focus-within { border-color: var(--bleu-clair); box-shadow: 0 0 0 5px var(--bleu-voile-2), 0 30px 60px -40px rgba(10,10,30,.4); }
.a3-outils__pre { font-size: 17px; color: var(--fg-dim); }
.a3-outils__barre input { flex: 1; min-width: 0; height: 46px; border: 0; background: transparent; font: inherit; font-size: 17px; color: var(--fg); outline: none; }
.a3-outils__aide { padding: 0 16px; font-size: 13.5px; color: var(--fg-dim); white-space: nowrap; }
.a3-outils.is-rempli .a3-outils__aide { color: var(--bleu); font-weight: 600; }
.a3-outils__cartes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.a3-outil { position: relative; display: grid; gap: 10px; align-content: start; text-align: left; padding: 22px; border-radius: 26px; border: 1px solid var(--line); background: var(--bg-elev); font: inherit; color: var(--fg); cursor: pointer; transition: transform .35s cubic-bezier(.2,.7,.2,1), box-shadow .35s, border-color .35s; }
.a3-outil:hover, .a3-outil:focus-visible { transform: translateY(-6px); border-color: var(--bleu-clair); box-shadow: 0 40px 80px -50px oklch(0.6 0.19 258 / .6); outline: none; }
.a3-outil b { margin-top: 6px; font-family: var(--font-display); font-weight: 500; font-size: 24px; letter-spacing: -.02em; }
.a3-outil__txt { font-size: 14.5px; line-height: 1.55; color: var(--fg-muted); }
.a3-outil__go { margin-top: 8px; display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 14.5px; color: var(--bleu); transition: gap .2s; }
.a3-outil:hover .a3-outil__go { gap: 12px; }
.a3-vo { position: relative; height: 170px; border-radius: 18px; background: radial-gradient(90% 90% at 50% 0%, var(--bleu-voile-2), transparent 70%), var(--bg-elev-2); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.a3-vo svg { width: 112px; height: 112px; }
.a3-vo__fond { fill: none; stroke: var(--line-strong); stroke-width: 9; }
.a3-vo__val { fill: none; stroke: var(--bleu); stroke-width: 9; stroke-linecap: round; stroke-dasharray: 100; stroke-dashoffset: 100; transition: stroke-dashoffset 1.3s cubic-bezier(.2,.7,.2,1); }
.a3-vo--seo svg { transform: rotate(-90deg); }
.a3-vo--seo > b { position: absolute; font-family: var(--font-display); font-weight: 500; font-size: 30px; letter-spacing: -.03em; }
.a3-vo__lignes { position: absolute; right: 16px; bottom: 16px; display: grid; gap: 5px; }
.a3-vo__lignes i { width: 46px; height: 6px; border-radius: 6px; background: var(--line-strong); transform: scaleX(.3); transform-origin: 0 50%; transition: transform .6s, background .6s; }
.a3-vo--vitesse svg { width: 150px; height: 90px; }
.a3-vo--vitesse .a3-vo__fond, .a3-vo--vitesse .a3-vo__val { stroke-width: 10; }
.a3-vo__aiguille { stroke: var(--fg); stroke-width: 3.5; stroke-linecap: round; transform-origin: 60px 62px; transform: rotate(-80deg); transition: transform 1.2s cubic-bezier(.3,1.4,.4,1); }
.a3-vo--vitesse circle { fill: var(--fg); }
.a3-vo__barres { position: absolute; left: 18px; right: 18px; bottom: 16px; display: grid; gap: 5px; }
.a3-vo__barres i { height: 5px; border-radius: 5px; background: var(--bleu-clair); width: var(--w); transform: scaleX(0); transform-origin: 0 50%; transition: transform .9s cubic-bezier(.2,.7,.2,1); }
.a3-vo__bouclier { fill: var(--bg-elev); stroke: var(--line-strong); stroke-width: 4; transition: stroke .5s, fill .5s; }
.a3-vo__coche { fill: none; stroke: var(--bleu); stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 60; stroke-dashoffset: 60; transition: stroke-dashoffset .6s .5s; }
.a3-vo__scan { position: absolute; left: 0; right: 0; top: 0; height: 40px; background: linear-gradient(180deg, transparent, oklch(0.72 0.16 250 / .28), transparent); transform: translateY(-50px); }
.a3-vo__cookies i { position: absolute; width: 10px; height: 10px; border-radius: 50%; background: oklch(0.72 0.12 70); transition: opacity .4s, transform .4s; }
.a3-vo__cookies i:nth-child(1) { left: 22%; top: 28%; } .a3-vo__cookies i:nth-child(2) { left: 74%; top: 22%; } .a3-vo__cookies i:nth-child(3) { left: 18%; top: 68%; } .a3-vo__cookies i:nth-child(4) { left: 80%; top: 70%; }
/* animation au survol (ordinateur) ou à l'apparition (téléphone) */
.a3-outil.is-anime .a3-vo--seo .a3-vo__val { stroke-dashoffset: 14; }
.a3-outil.is-anime .a3-vo__lignes i { transform: none; background: oklch(0.6 0.14 155); }
.a3-outil.is-anime .a3-vo__lignes i:nth-child(2) { transition-delay: .2s; } .a3-outil.is-anime .a3-vo__lignes i:nth-child(3) { transition-delay: .4s; background: oklch(0.7 0.15 70); }
.a3-outil.is-anime .a3-vo--vitesse .a3-vo__val { stroke-dashoffset: 22; }
.a3-outil.is-anime .a3-vo__aiguille { transform: rotate(52deg); }
.a3-outil.is-anime .a3-vo__barres i { transform: none; }
.a3-outil.is-anime .a3-vo__barres i:nth-child(2) { transition-delay: .15s; } .a3-outil.is-anime .a3-vo__barres i:nth-child(3) { transition-delay: .3s; }
.a3-outil.is-anime .a3-vo__scan { animation: a3-scan 1.4s ease-in-out forwards; }
.a3-outil.is-anime .a3-vo__cookies i { opacity: 0; transform: scale(.4); transition-delay: .7s; }
.a3-outil.is-anime .a3-vo__bouclier { stroke: var(--bleu); fill: var(--bleu-voile); transition-delay: 1s; }
.a3-outil.is-anime .a3-vo__coche { stroke-dashoffset: 0; transition-delay: 1.1s; }
@keyframes a3-scan { to { transform: translateY(190px); } }

/* ============ Fin : même bloc que la V1, avec un fond animé ============ */
.a3-fin { isolation: isolate; }
.a3-fin__toile { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.a3-fin .finalcta__inner { z-index: 2; }

/* ============ Tablette et téléphone : plus simple, moins d'animations ============ */
@media (max-width: 1000px) {
  .a3-expl { grid-template-columns: minmax(0, 1fr); }
  .a3-expl__droite { display: none; }
  .a3-expl__item .a3-expl__pan { padding: 4px 0 24px; }
  .a3-expl__barre { display: none; }
  .a3-expl__item.is-on button { padding-left: 18px; }
  .a3-recit { height: auto; }
  .a3-recit__scene { position: static; height: auto; min-height: 0; max-height: none; grid-template-columns: minmax(0, 1fr); }
  .a3-recit__vis { display: none; }
  .a3-recit__etape, .a3-recit__etape.is-fait { opacity: 1; transform: none; }
  .a3-recit__etape .a3-couche { opacity: 1; transform: none; margin-top: 18px; }
  .a3-recit__rail i { transform: scaleY(1); }
  .a3-recit__etape::before { background: var(--bleu-clair); border-color: var(--bleu-clair); }
  .a3-sys__tete { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .a3-sys__pan .a3-flux { grid-template-columns: auto; grid-auto-flow: row; justify-content: stretch; justify-items: stretch; padding: 18px; }
  .a3-sys__pan .a3-flux__n { width: auto; grid-template-columns: 38px 1fr; column-gap: 12px; align-items: center; padding: 12px 14px; }
  .a3-sys__pan .a3-flux__ic { grid-row: span 2; margin: 0; }
  .a3-sys__pan .a3-flux__lien { width: 2px; height: 18px; min-width: 0; justify-self: start; margin-left: 32px; }
  .a3-sys__pan .a3-flux__lien i { display: none; }
  .a2-proj { position: relative; top: auto; grid-template-columns: minmax(0, 1fr); min-height: 0; }
  .a2-proj__vis { order: -1; }
  .a3-outils__cartes { grid-template-columns: minmax(0, 1fr); }
  .a3-outil { grid-template-columns: 120px 1fr; column-gap: 18px; }
  .a3-outil .a3-vo { grid-row: span 4; height: 100%; min-height: 130px; }
  .a3-outil .a3-vo svg { width: 80px; height: 80px; }
  .a3-outil .a3-vo--vitesse svg { width: 100px; height: 60px; }
  .a3-vo__lignes, .a3-vo__barres { display: none; }
}
@media (max-width: 640px) {
  .a3-expl__court { display: none; }
  .a3-expl__item button { grid-template-columns: 1fr; }
  .a3-sys__onglets { flex-wrap: nowrap; overflow-x: auto; margin: 0 calc(var(--gutter) * -1); padding: 2px var(--gutter) 6px; scrollbar-width: none; }
  .a3-sys__onglets::-webkit-scrollbar { display: none; }
  .a3-sys__onglets button { flex: none; }
  .a3-outils__barre { padding-left: 16px; }
  .a3-outils__aide { display: none; }
  .a3-outil { grid-template-columns: 1fr; }
  .a3-outil .a3-vo { grid-row: auto; height: 120px; min-height: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .a3-expl__pan, .a3-expl__fixes li, .a3-sys__pan, .a3-couche, .a3-flux__n, .a3-constats li, .a3-carte-vis .a3-gains li { animation: none !important; transition: none !important; }
  .a3-flux__lien i, .a3-expl__barre, .a3-sys__barre { display: none !important; }
}

/* ============ Bandeau de preuves (sous la bannière) ============ */
.a3-preuves { position: relative; z-index: 2; padding: 8px 0 40px; }
.a3-preuves__liste { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.a3-preuve { position: relative; display: grid; gap: 4px; align-content: start; padding: 28px 24px 4px 0; }
.a3-preuve + .a3-preuve { padding-left: 24px; border-left: 1px solid var(--line); }
.a3-preuve b { font-family: var(--font-display); font-weight: 500; font-size: clamp(40px, 4.4vw, 60px); letter-spacing: -.045em; line-height: 1; background: linear-gradient(120deg, var(--fg) 30%, var(--bleu) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.a3-preuve__t { margin-top: 8px; font-size: 16px; font-weight: 600; }
.a3-preuve__s { font-size: 13.5px; color: var(--fg-muted); }
.a3-preuve::before { content: ""; position: absolute; left: 0; top: -1px; height: 2px; width: 0; background: linear-gradient(90deg, var(--bleu-clair), var(--violet)); transition: width 1.1s cubic-bezier(.2,.7,.2,1); }
.a3-preuve + .a3-preuve::before { left: -1px; }
.a3-preuve.in::before { width: 100%; }
@media (max-width: 480px) {
  .a3-preuve, .a3-preuve + .a3-preuve { padding: 20px 12px 0 0; }
  .a3-preuve + .a3-preuve:nth-child(even) { padding-left: 14px; }
  .a3-preuve__s { display: none; }
}

/* ============ Systèmes : fond léger aux couleurs du client (style retenu : points et halo) ============ */
.a3-sys__pan { isolation: isolate; }
.a3-sys__pan > *:not(.a3-style__fond) { position: relative; z-index: 1; }
.a3-style__fond { position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; background-image: radial-gradient(color-mix(in oklab, var(--c2) 70%, transparent) 1.4px, transparent 1.9px); background-size: 20px 20px; -webkit-mask-image: radial-gradient(75% 90% at 50% 55%, #000 10%, transparent 80%); mask-image: radial-gradient(75% 90% at 50% 55%, #000 10%, transparent 80%); opacity: .8; }
.a3-style__fond i { position: absolute; display: block; inset: 14% 18%; border-radius: 50%; background: color-mix(in oklab, var(--c2) 38%, transparent); filter: blur(70px); }
.a3-sys__pan .a3-flux { background: color-mix(in oklab, var(--bg-elev-2) 88%, transparent); backdrop-filter: blur(6px); }