:root{
  --bg:#0B0F19;
  --surface: rgba(255,255,255,.045);
  --surface2:#0D1524;
  --text:#F1F5F9;
  --muted:#94A3B8;
  --line: rgba(255,255,255,.1);
  --accent:#2563EB;
  --accent-dark:#1D4ED8;
  --accent-light:#60A5FA;
  --accent-soft: rgba(96,165,250,.14);
  --danger:#F87171;
  --warn:#FBBF24;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter",ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}

header{
  position:sticky;top:0;z-index:20;
  background:rgba(11,15,25,.85);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:74px;gap:28px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.01em}
.brand-mark{
  width:22px;height:22px;margin:0 4px;position:relative;
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  border-radius:50% 50% 50% 0;
  transform:rotate(-45deg);
  box-shadow:0 3px 7px rgba(37,99,235,.35);
}
.brand-mark:after{
  content:"";position:absolute;width:8px;height:8px;left:50%;top:50%;
  margin:-4px 0 0 -4px;background:#0B0F19;border-radius:50%;
}
.brand-text{display:flex;flex-direction:column;gap:2px}
.brand-text>span:first-child{color:#fff}
.brand-tagline{
  display:none;font-weight:500;font-size:11px;letter-spacing:0;line-height:1.35;
  color:var(--muted);max-width:300px;
}
@media(min-width:1024px){.brand-tagline{display:block}}
nav{display:flex;align-items:center;gap:26px;font-size:14px;color:#94A3B8}
nav a{position:relative;padding:4px 0}
nav a:hover{color:#fff}
nav a:after{
  content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;
  background:#60A5FA;transition:right .2s ease
}
nav a:hover:after{right:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 18px;border-radius:10px;font-weight:700;
  border:1px solid var(--line);background:var(--surface);color:var(--text);transition:.18s
}
.btn:hover{transform:translateY(-1px);border-color:rgba(255,255,255,.28);box-shadow:0 8px 22px rgba(59,130,246,.16)}
.btn.primary{background:var(--accent);color:white;border-color:var(--accent);box-shadow:0 8px 20px rgba(37,99,235,.32)}
.btn.primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);box-shadow:0 10px 26px rgba(37,99,235,.4)}
.btn.ghost{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);box-shadow:none}

.hero{
  background:#0B0F19;
  padding:100px 0 68px;
  position:relative;
  overflow:hidden;
  isolation:isolate;
}
.hero:before{
  content:"";position:absolute;top:-220px;left:50%;right:auto;width:1140px;height:720px;
  transform:translateX(-50%);
  background:radial-gradient(ellipse at center,rgba(59,130,246,.32),rgba(59,130,246,0) 65%);
  pointer-events:none;
}
.hero:after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:130px;
  background:linear-gradient(to bottom,transparent,var(--bg));
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:70px;
  align-items:center;
  position:relative;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;position:relative;
  color:#93C5FD;background:rgba(96,165,250,.1);
  border:1px solid rgba(96,165,250,.28);
  padding:7px 16px;border-radius:999px;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:.11em;
  font-size:11.5px;
}
.hero .eyebrow:before,.page-hero .eyebrow:before{
  content:"";width:7px;height:7px;border-radius:50%;flex:none;
  background:#22C55E;box-shadow:0 0 0 3px rgba(34,197,94,.25),0 0 10px 1px rgba(34,197,94,.85);
}
h1{
  font-size:clamp(42px,6vw,70px);
  line-height:1.03;
  margin:16px 0 22px;
  letter-spacing:-.045em;
  color:#fff;
}
.hero h1 .grad,.page-hero h1 .grad{
  background:linear-gradient(90deg,#60A5FA,#A5B4FC,#22D3EE);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
h2{
  font-size:clamp(30px,4vw,46px);
  line-height:1.1;
  margin:0 0 18px;
  letter-spacing:-.03em;
  color:#fff;
}
h3{font-size:21px;margin:0 0 9px;color:#fff}
.lead{font-size:20px;color:var(--muted);max-width:720px}
.muted{color:var(--muted)}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.tech-line{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.tech-line span{
  padding:7px 10px;border-radius:999px;background:var(--surface);
  border:1px solid var(--line);font-size:12px;color:var(--text)
}
.product-shot{
  position:relative;
  background:#0b1120;
  border-radius:20px;
  overflow:hidden;
  box-shadow:0 35px 90px -20px rgba(15,23,42,.65),0 0 0 1px rgba(255,255,255,.05) inset;
  border:1px solid #1e293b;
}
.product-shot img{display:block;width:100%}

.live-pill{
  position:absolute;display:flex;align-items:center;gap:8px;
  background:rgba(11,15,25,.92);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.12);
  border-radius:999px;padding:9px 14px;
  box-shadow:0 14px 30px rgba(2,6,23,.6);
  font-size:12.5px;font-weight:700;color:#fff;
  white-space:nowrap;z-index:2;
}
.live-pill .dot{width:7px;height:7px;border-radius:50%;flex:none;animation:live-blink 1.8s ease-in-out infinite}
@keyframes live-blink{0%,100%{opacity:1}50%{opacity:.35}}
@media(prefers-reduced-motion:reduce){.live-pill .dot{animation:none}}
.live-pill.pill-ok{top:-14px;left:22px}
.live-pill.pill-ok .dot{background:#22C55E;box-shadow:0 0 8px rgba(34,197,94,.75)}
.live-pill.pill-warn{bottom:-14px;right:22px}
.live-pill.pill-warn .dot{background:#F97316;box-shadow:0 0 8px rgba(249,115,22,.75)}
.live-pill.pill-danger{top:-14px;right:22px}
.live-pill.pill-danger .dot{background:#EF4444;box-shadow:0 0 8px rgba(239,68,68,.85)}
@media(max-width:1080px){.live-pill{display:none}}

.section{padding:72px 0}
.section.white{background:transparent}
.section.soft{
  background:
    radial-gradient(ellipse 900px 420px at 12% 0%, rgba(59,130,246,.08), transparent 60%),
    radial-gradient(ellipse 900px 420px at 88% 100%, rgba(99,102,241,.07), transparent 60%),
    var(--surface2);
}
.section-head{max-width:760px;margin-bottom:32px}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  padding:30px;
  transition:.2s;
}
.card:hover{
  border-color:rgba(96,165,250,.45);
  box-shadow:0 16px 40px rgba(59,130,246,.18);
  transform:translateY(-2px);
  background:rgba(255,255,255,.065);
}
.card.clean{border:none;box-shadow:none;background:transparent;padding:0}
.card.clean:hover{transform:none;box-shadow:none;background:transparent}
.icon,.flow-icon{
  background:linear-gradient(135deg,rgba(96,165,250,.22),rgba(34,211,238,.14));
  border:1px solid rgba(96,165,250,.4);
  color:#93C5FD;
  box-shadow:0 0 22px rgba(59,130,246,.35);
}
.icon{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  font-weight:900;margin-bottom:18px
}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:34px}
.step{
  padding-top:18px;border-top:2px solid var(--line)
}
.step .num{
  color:var(--accent-light);font-weight:800;font-size:13px;
  letter-spacing:.1em;text-transform:uppercase
}
.flow{position:relative;margin-top:8px}
.flow-line{position:relative;height:2px;background:var(--line);margin-bottom:34px}
.flow-line:before,.flow-line:after{content:"";position:absolute;top:50%;width:8px;height:8px;margin-top:-4px;border-radius:50%;background:var(--line)}
.flow-line:before{left:0}
.flow-line:after{right:0}
.flow-dot{
  position:absolute;top:50%;left:0;width:10px;height:10px;margin-top:-5px;
  border-radius:50%;background:var(--accent-light);box-shadow:0 0 0 5px var(--accent-soft),0 0 12px 2px rgba(96,165,250,.8);
  animation:flow-travel 6s ease-in-out infinite;
}
@keyframes flow-travel{
  0%,4%{left:0%}
  29%,33%{left:33.333%}
  62%,66%{left:66.666%}
  96%,100%{left:100%}
}
.flow-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.flow-icon{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  margin-bottom:14px;
  animation:flow-pulse 6s ease-in-out infinite;
}
.flow-step:nth-child(1) .flow-icon{animation-delay:0s}
.flow-step:nth-child(2) .flow-icon{animation-delay:1.5s}
.flow-step:nth-child(3) .flow-icon{animation-delay:3s}
.flow-step:nth-child(4) .flow-icon{animation-delay:4.5s}
@keyframes flow-pulse{
  0%,8%{box-shadow:0 0 22px rgba(59,130,246,.35);transform:scale(1)}
  4%{box-shadow:0 0 0 10px rgba(59,130,246,0);transform:scale(1.08)}
  100%{box-shadow:0 0 22px rgba(59,130,246,.35);transform:scale(1)}
}
@media(prefers-reduced-motion:reduce){
  .flow-dot,.flow-icon{animation:none}
}
@media(max-width:900px){
  .flow-line{display:none}
  .flow-steps{grid-template-columns:1fr;gap:24px}
}
.compare{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center
}
.shot-wrap{position:relative}
.screenshot-frame,.window-frame{
  background:#0b1120;border-radius:18px;overflow:hidden;position:relative;
  border:1px solid #1E293B;
  box-shadow:0 30px 80px rgba(59,130,246,.16),0 8px 26px rgba(2,6,23,.55);
}
.screenshot-frame{padding:9px}
.screenshot-frame img{display:block;width:100%;height:auto;border-radius:12px}
.window-bar{display:flex;gap:6px;padding:12px 16px;background:rgba(255,255,255,.03);border-bottom:1px solid rgba(255,255,255,.06)}
.window-bar span{width:10px;height:10px;border-radius:50%;background:#475569}
.window-bar span:nth-child(1){background:#F87171}
.window-bar span:nth-child(2){background:#FBBF24}
.window-bar span:nth-child(3){background:#34D399}
.window-frame img{display:block;width:100%;height:auto}
.value-list{display:grid;gap:18px;margin-top:26px}
.value{
  display:grid;grid-template-columns:34px 1fr;gap:14px;
  align-items:start
}
.value b{
  width:30px;height:30px;border-radius:50%;
  background:rgba(96,165,250,.14);color:#93C5FD;
  display:grid;place-items:center;font-size:13px
}
.pill{
  display:inline-flex;padding:7px 10px;border-radius:999px;
  background:rgba(96,165,250,.14);color:#93C5FD;
  font-size:12px;font-weight:700
}
.cta{
  display:flex;align-items:center;justify-content:space-between;
  gap:30px;padding:40px 44px;border-radius:22px;
  background:linear-gradient(135deg,#0b1120,#152449);color:white;
  border:1px solid rgba(255,255,255,.08);
}
.cta .muted{color:#b7c2d6}
.page-hero{padding:72px 0 40px;position:relative;overflow:hidden}
.page-hero:before{
  content:"";position:absolute;top:-200px;left:50%;transform:translateX(-50%);
  width:1100px;height:600px;
  background:radial-gradient(ellipse at center,rgba(59,130,246,.28),rgba(59,130,246,0) 65%);
  pointer-events:none;
}
.page-hero .container{position:relative}
.page-hero .lead{max-width:820px}

/* ===== Étapes animées (fonctionnement.html) ===== */
.steps-flow{position:relative;margin-top:10px}
.steps-flow-line{width:100%;height:6px;display:block;overflow:visible}
.flow-dash{
  animation:fn-dash 1.6s linear infinite;
  filter:drop-shadow(0 0 4px rgba(96,165,250,.9));
}
@keyframes fn-dash{to{stroke-dashoffset:-80}}
@media(prefers-reduced-motion:reduce){.flow-dash{animation:none}}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:22px}
.step-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:18px;padding:28px;transition:.25s;
}
.step-card:hover{
  border-color:rgba(96,165,250,.5);
  box-shadow:0 16px 36px rgba(59,130,246,.22);
  transform:translateY(-3px);
  background:rgba(255,255,255,.065);
}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:12px;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(96,165,250,.22),rgba(34,211,238,.14));
  border:1px solid rgba(96,165,250,.4);
  color:#93C5FD;font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:0 0 22px rgba(59,130,246,.4);
}
.pillars .card{background:var(--surface)}

@media(max-width:900px){
  .steps-flow-line{display:none}
  .steps-grid{grid-template-columns:1fr}
}

/* ===== Fenêtre d'application (plateforme.html) ===== */
.hero-shot{position:relative;max-width:960px;margin:48px auto 0}

.pricing{display:grid;grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));gap:22px}
.price-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:18px;padding:30px;transition:.2s;
}
.price-card:hover{border-color:rgba(96,165,250,.4);box-shadow:0 16px 40px rgba(59,130,246,.18);transform:translateY(-2px)}
.price-card.featured{border:2px solid var(--accent-light);box-shadow:0 16px 44px rgba(59,130,246,.22)}
.price{font-size:32px;font-weight:800;margin:14px 0;color:#fff}
.price-card ul{padding-left:20px;color:var(--muted)}

form{display:grid;gap:15px}
label{font-size:14px;color:var(--muted)}
input,textarea,select{
  width:100%;background:var(--surface);color:var(--text);border:1px solid var(--line);
  border-radius:10px;padding:13px 14px;font:inherit;margin-top:6px;
  transition:border-color .15s, box-shadow .15s;
}
input::placeholder,textarea::placeholder{color:#5B6B85}
input:focus,textarea:focus,select:focus{
  outline:none;border-color:var(--accent-light);box-shadow:0 0 0 3px var(--accent-soft);
}
select option{background:#0F1B30;color:var(--text)}
textarea{min-height:150px;resize:vertical}
.note{font-size:13px;color:var(--muted)}

footer{
  padding:52px 0 30px;
  border-top:1px solid var(--line);
  background:var(--bg);color:var(--muted);font-size:14px
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
footer .brand{color:#fff}
footer h4{color:#fff;margin:0 0 10px}
footer a{display:block;margin:6px 0}
footer a:hover{color:var(--accent-light)}

.usecase-media{
  margin:-30px -30px 22px;height:172px;
  border-radius:18px 18px 0 0;
  overflow:hidden;
  background:var(--surface2);
}
.usecase-media img{width:100%;height:100%;object-fit:cover;display:block}

.screenshot-frame svg{display:block;width:100%;height:auto;border-radius:13px}
.product-shot svg{display:block;width:100%;height:auto}

.stat{
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  padding:28px 26px;
}
.stat .figure{font-size:38px;font-weight:800;letter-spacing:-.02em;color:var(--accent-light);line-height:1}
.stat .figure small{font-size:15px;font-weight:700;color:var(--muted);margin-left:3px}
.stat p{margin:10px 0 0;color:var(--muted);font-size:14.5px;line-height:1.55}

.section.tight{padding:52px 0 64px}
.stat.compact{padding:18px 20px;border-radius:14px}
.stat.compact .figure{font-size:28px}
.stat.compact p{font-size:13px;margin-top:6px}
.preview-frame{max-width:960px;margin:0 auto}
.cost-example{
  margin-top:26px;padding:22px 26px;border-radius:16px;
  background:var(--surface2);border:1px dashed rgba(255,255,255,.18);
  font-size:14.5px;color:var(--muted);line-height:1.65;
}
.cost-example strong{color:var(--text)}

.calc-panel{
  margin-top:30px;padding:28px 30px;border-radius:18px;
  background:var(--surface2);border:1px solid var(--line);
}
.calc-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-bottom:24px}
.calc-grid input{background:var(--surface)}

.calc-block{margin-top:28px}
.calc-block:first-child{margin-top:0}
.calc-block h3{font-size:15px;margin:0 0 4px}
.calc-block > .hint{margin:0 0 14px}
.calc-rows{display:flex;flex-direction:column;gap:8px;margin-bottom:10px}
.calc-row{
  display:grid;grid-template-columns:130px 1fr 32px;gap:10px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px 10px;
}
.calc-row.zone-row{grid-template-columns:1fr 1fr 32px}
.calc-row select,.calc-row input[type="text"]{
  width:100%;border:1px solid var(--line);background:var(--bg);color:var(--text);
  border-radius:7px;padding:8px 10px;font:inherit;font-size:13.5px;margin:0;
}
.calc-row .row-remove{
  border:none;background:none;color:var(--muted);cursor:pointer;font-size:17px;line-height:1;
  width:28px;height:28px;border-radius:6px;
}
.calc-row .row-remove:hover{background:rgba(248,113,113,.15);color:var(--danger)}
.btn-add{
  background:rgba(96,165,250,.14);color:#93C5FD;border:1px solid rgba(96,165,250,.3);border-radius:9px;
  padding:9px 16px;font-size:13.5px;font-weight:700;cursor:pointer;
}
.btn-add:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.calc-options{display:flex;flex-direction:column;gap:2px}
.calc-options label{
  display:flex;gap:11px;align-items:flex-start;padding:10px 8px;border-radius:8px;cursor:pointer;font-size:14px;color:var(--text)
}
.calc-options label:hover{background:var(--surface)}
.calc-options input{margin-top:3px;flex:none;width:auto}
.calc-options .opt-sub{display:block;font-size:12.5px;color:var(--muted);margin-top:1px}
.calc-options .opt-price{font-size:12.5px;font-weight:700;color:var(--accent-light)}

.plan-picker{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.plan-pill{
  border:1px solid var(--line);background:var(--surface);color:var(--text);
  border-radius:20px;padding:7px 16px;font:inherit;font-size:13.5px;font-weight:700;cursor:pointer;
}
.plan-pill:hover:not([disabled]){border-color:var(--accent-light);color:#93C5FD}
.plan-pill.active{background:var(--accent);border-color:var(--accent);color:#fff}
.plan-pill[disabled]{opacity:.4;cursor:not-allowed}

.calc-results{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.calc-result{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:18px 16px;text-align:center;
}
.calc-result span{display:block;font-size:26px;font-weight:800;color:var(--accent-light);letter-spacing:-.02em}
.calc-result p{margin:6px 0 0;font-size:12.5px;color:var(--muted)}
.calc-result--accent{background:rgba(96,165,250,.1);border-color:rgba(96,165,250,.4)}
.calc-result--accent span{color:var(--accent-light)}
@media(max-width:900px){
  .calc-grid{grid-template-columns:repeat(2,1fr)}
  .calc-results{grid-template-columns:1fr}
}

@media(max-width:900px){
  nav{display:none}
  .hero-grid,.compare,.grid-3,.pricing,.steps,.footer-grid{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .hero{padding-top:72px}
}
@media(max-width:620px){
  .container{width:min(var(--max),calc(100% - 26px))}
  .section{padding:52px 0}
  .cta{align-items:flex-start;flex-direction:column;padding:28px}
  h1{font-size:44px}
}