:root{
  --bg:#faf9f6;--bg-alt:#f2ede5;--surface:#ffffff;--border:#e8e2d9;
  --charcoal:#252525;--anthracite:#3d3d3d;--muted:#787878;
  --accent:#1c3d6e;--accent-light:#e8eef7;
  --gold:#bf7e2d;--gold-light:#fdf3e3;
  --green:#2d7a4a;--green-light:#e8f5ee;
  --orange:#c47c1a;--orange-light:#fef3e2;
  --radius:16px;--radius-sm:8px;
  --shadow-sm:0 2px 8px rgba(0,0,0,.06);
  --shadow:0 6px 24px rgba(0,0,0,.09);
  --shadow-lg:0 16px 48px rgba(0,0,0,.13);
  --font-body:'Inter',system-ui,-apple-system,sans-serif;
  --font-display:'Fraunces',Georgia,serif;
  --nav-h:68px;--max-w:1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-body);font-size:1rem;line-height:1.65;color:var(--anthracite);background:var(--bg);overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{cursor:pointer;font-family:inherit;border:none;background:none}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--charcoal);line-height:1.2;letter-spacing:-.02em}
h1{font-size:clamp(2.2rem,5vw,3.8rem);font-weight:700}
h2{font-size:clamp(1.75rem,3.5vw,2.8rem);font-weight:600}
h3{font-size:clamp(1.1rem,2vw,1.35rem);font-weight:600}
.eyebrow{
  display:inline-block;font-size:.75rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--gold);background:var(--gold-light);padding:.3em .85em;border-radius:100px;margin-bottom:1.2rem;
}
.section{padding:5.5rem 1.5rem}.section--alt{background:var(--bg-alt)}
.container{max-width:var(--max-w);margin:0 auto}
.section__header{text-align:center;max-width:680px;margin:0 auto 4rem}
.section__header p{font-size:1.05rem;color:var(--muted);margin-top:.8rem}
/* HEADER */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);
  display:flex;align-items:center;padding:0 1.5rem;
  background:rgba(250,249,246,.92);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);transition:box-shadow .3s;
}
.site-header.scrolled{box-shadow:var(--shadow-sm)}
.header__inner{width:100%;max-width:var(--max-w);margin:0 auto;display:flex;align-items:center;justify-content:space-between}
.logo{font-family:var(--font-display);font-size:1.4rem;font-weight:700;color:var(--charcoal)}
.logo span{color:var(--accent)}
.header__cta{
  display:inline-flex;align-items:center;gap:.5rem;padding:.6rem 1.4rem;
  border-radius:100px;background:var(--accent);color:#fff;
  font-size:.88rem;font-weight:600;transition:background .2s,transform .15s;
}
.header__cta:hover{background:#264e8a;transform:translateY(-1px)}
/* HERO */
.hero{
  min-height:100svh;padding:calc(var(--nav-h) + 4.5rem) 1.5rem 5.5rem;
  display:flex;align-items:center;
  background:linear-gradient(158deg,var(--bg) 52%,var(--bg-alt) 100%);
}
.hero__inner{max-width:var(--max-w);margin:0 auto;width:100%}
.hero__content{max-width:740px}
.hero__tag{
  display:inline-flex;align-items:center;gap:.5rem;font-size:.78rem;font-weight:600;letter-spacing:.06em;
  color:var(--accent);background:var(--accent-light);padding:.4em 1em;border-radius:100px;margin-bottom:1.8rem;
}
.hero__title{margin-bottom:1.4rem}
.hero__title em{font-style:normal;color:var(--accent);border-bottom:3px solid var(--gold)}
.hero__sub{font-size:1.13rem;color:var(--muted);max-width:560px;margin-bottom:2.6rem}
.btn{display:inline-flex;align-items:center;gap:.6rem;padding:.85rem 2rem;border-radius:100px;font-size:1rem;font-weight:600;transition:all .22s}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:#264e8a;transform:translateY(-2px);box-shadow:var(--shadow)}
.btn--outline{border:2px solid var(--border);color:var(--anthracite);background:var(--surface)}
.btn--outline:hover{border-color:var(--accent);color:var(--accent)}
.btn--cta{background:linear-gradient(135deg,#25d366,#128c7e);color:#fff;font-size:1.05rem;padding:1rem 2.4rem}
.btn--cta:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(37,211,102,.35)}
.hero__actions{display:flex;flex-wrap:wrap;gap:1rem;align-items:center}
.hero__disclaimer{margin-top:1.1rem;font-size:.82rem;color:var(--muted)}
/* FEATURES */
.features-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:1.5rem}
.feature-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:1.8rem 1.5rem;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.feature-card__icon{width:48px;height:48px;border-radius:12px;background:var(--accent-light);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:1rem}
.feature-card__title{font-size:.98rem;font-weight:600;color:var(--charcoal);margin-bottom:.4rem}
.feature-card__desc{font-size:.88rem;color:var(--muted);line-height:1.55}
/* DEMOS */
.demos-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem}
.demo-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.demo-card__label{display:flex;justify-content:space-between;align-items:center;padding:.65rem 1rem;background:var(--charcoal);color:#fff;font-size:.78rem;font-weight:600}
.demo-disclaimer{font-size:.66rem;font-weight:400;color:rgba(255,255,255,.52);max-width:155px;text-align:right}
.demo-screen{padding:1.2rem;min-height:220px;background:var(--bg)}
.chat-msgs{display:flex;flex-direction:column;gap:.6rem}
.chat-msg{padding:.65rem 1rem;border-radius:12px;font-size:.84rem;line-height:1.45;max-width:86%}
.chat-msg--in{background:#fff;color:var(--anthracite);border:1px solid var(--border);border-radius:12px 12px 12px 3px;align-self:flex-start}
.chat-msg--ai{background:var(--accent);color:#fff;border-radius:12px 12px 3px 12px;align-self:flex-end}
.chat-typing{display:none;padding:.55rem .9rem;background:#fff;border:1px solid var(--border);border-radius:12px 12px 12px 3px;width:fit-content}
.typing-dots span{display:inline-block;width:6px;height:6px;background:var(--muted);border-radius:50%;animation:blink 1.2s infinite}
.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.2}30%{opacity:1}}
.form-demo-rows{display:flex;flex-direction:column;gap:.65rem}
.form-row{display:flex;align-items:center;gap:.65rem;font-size:.84rem}
.form-row span:first-child{min-width:88px;font-weight:500;color:var(--charcoal);font-size:.8rem}
.form-val{flex:1;padding:.4rem .7rem;border:1px solid var(--border);border-radius:6px;background:#fff;color:var(--anthracite);font-size:.84rem;opacity:0;transition:opacity .4s}
.form-val.typed{opacity:1}
.form-status{margin-top:.85rem;padding:.5rem 1rem;background:var(--green-light);color:var(--green);border-radius:8px;font-size:.82rem;font-weight:600;opacity:0;transition:opacity .4s;display:flex;align-items:center;gap:.4rem}
.relance-list{display:flex;flex-direction:column;gap:.5rem}
.relance-row{display:flex;align-items:center;justify-content:space-between;padding:.5rem .7rem;border:1px solid var(--border);border-radius:8px;font-size:.82rem;background:#fff}
.relance-name{font-weight:600;color:var(--charcoal)}.relance-reason{color:var(--muted);font-size:.76rem}
.badge{padding:.2em .65em;border-radius:100px;font-size:.71rem;font-weight:600;white-space:nowrap}
.badge--done{background:var(--green-light);color:var(--green);opacity:0;transition:opacity .4s}.badge--done.shown{opacity:1}
.rapport-card{background:linear-gradient(135deg,var(--accent),#264e8a);color:#fff;border-radius:12px;padding:1rem 1.2rem}
.rapport-time{font-size:.76rem;opacity:.65;margin-bottom:.6rem}
.rapport-items{list-style:none;display:flex;flex-direction:column;gap:.35rem}
.rapport-items li{display:flex;align-items:flex-start;gap:.6rem;font-size:.84rem;opacity:0;transform:translateX(-8px);transition:opacity .4s,transform .4s}
.rapport-items li.shown{opacity:1;transform:none}
.rapport-items li::before{content:'✦';font-size:.58rem;opacity:.6;margin-top:.3em}
/* TOOLS */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(175px,1fr));gap:1rem}
.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:1.2rem 1rem;display:flex;flex-direction:column;align-items:flex-start;gap:.5rem;box-shadow:var(--shadow-sm)}
.tool-card__name{font-size:.93rem;font-weight:600;color:var(--charcoal)}
.status-badge{padding:.2em .7em;border-radius:100px;font-size:.71rem;font-weight:600}
.status-badge--on{background:var(--green-light);color:var(--green)}
.status-badge--soon{background:var(--orange-light);color:var(--orange)}
/* TIMELINE */
.timeline{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1.5rem;counter-reset:step}
.timeline-step{counter-increment:step;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem 1.4rem 1.6rem;position:relative;box-shadow:var(--shadow-sm)}
.timeline-step::before{content:counter(step);position:absolute;top:0;left:1.4rem;width:36px;height:36px;background:var(--accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.88rem;transform:translateY(-50%)}
.timeline-step p{font-size:.88rem;color:var(--muted);margin-top:.55rem;line-height:1.55}
/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:.75rem;max-width:760px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;padding:1.1rem 1.4rem;font-size:.97rem;font-weight:600;color:var(--charcoal);text-align:left;gap:1rem}
.faq-arrow{flex-shrink:0;width:20px;height:20px;transition:transform .3s;color:var(--muted)}
.faq-item.open .faq-arrow{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s ease}
.faq-item.open .faq-a{max-height:260px}
.faq-a p{padding:.2rem 1.4rem 1.2rem;font-size:.92rem;color:var(--muted);line-height:1.7}
/* CTA SECTION */
.cta-section{background:linear-gradient(135deg,var(--accent) 0%,#264e8a 60%,#1a3060 100%);color:#fff;text-align:center;padding:6rem 1.5rem}
.cta-section h2{color:#fff}
.cta-section p{color:rgba(255,255,255,.75);font-size:1.08rem;margin:.8rem auto 2.5rem;max-width:560px}
/* FOOTER */
.site-footer{background:var(--charcoal);color:rgba(255,255,255,.5);padding:2.5rem 1.5rem;text-align:center;font-size:.82rem}
.site-footer a{color:rgba(255,255,255,.7)}
/* BOTTOM BAR */
.bottom-bar{position:fixed;bottom:0;left:0;right:0;z-index:99;background:rgba(37,37,37,.96);backdrop-filter:blur(8px);padding:.9rem 1.5rem;display:flex;align-items:center;justify-content:center;gap:1rem;box-shadow:0 -2px 14px rgba(0,0,0,.22)}
.bottom-bar .btn--cta{padding:.65rem 1.6rem;font-size:.9rem}
/* FADE */
.fade-in{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.fade-in.visible{opacity:1;transform:none}
/* RESPONSIVE */
@media(max-width:640px){
  .section{padding:3.5rem 1.2rem}.features-grid,.demos-grid,.timeline{grid-template-columns:1fr}
  .tools-grid{grid-template-columns:repeat(2,1fr)}.header__cta{display:none}
  .hero{padding:calc(var(--nav-h) + 2.5rem) 1.2rem 4rem}.hero__actions{flex-direction:column;align-items:flex-start}
}
@media(min-width:1024px){.demos-grid{grid-template-columns:repeat(2,1fr)}.timeline{grid-template-columns:repeat(4,1fr)}}

/* Accessibilité : focus visible sur tous les éléments interactifs */
a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:4px}
.nav__link{font-weight:600;color:var(--anthracite);text-decoration:none;padding:.5rem .75rem}
.nav__link:hover{color:var(--accent)}
@media (prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}