/* ===== InterGo — charte Infoforma (inspirée de drone.infoforma.fr) =====
   Sora (titres) + Manrope (corps) · orange #ec3013 · gris/blanc · effets signature. */
:root{
  --brand:#ec3013;
  --brand-dark:color-mix(in srgb,var(--brand) 82%,#000);
  --brand-soft:color-mix(in srgb,var(--brand) 10%,#fff);
  --fg:#404040; --fg-strong:#171717; --muted:#737373; --muted-2:#a3a3a3;
  --border:#e5e5e5; --bg:#ffffff; --bg-soft:#fafafa; --bg-dark:#1c1c1e;
  --radius:12px; --radius-sm:8px;
  --shadow:0 1px 3px rgba(17,24,39,.06),0 10px 26px rgba(17,24,39,.06);
  --maxw:1180px;
  --font:'Manrope',ui-sans-serif,system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --font-head:'Sora','Manrope',ui-sans-serif,system-ui,sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --fg:#d4d4d4; --fg-strong:#fafafa; --muted:#a3a3a3; --border:#2a2a2c;
  --bg:#0f1115; --bg-soft:#15171c; --brand-soft:color-mix(in srgb,var(--brand) 18%,#0f1115);
  --shadow:0 1px 3px rgba(0,0,0,.5),0 10px 30px rgba(0,0,0,.4);
}}
:root[data-theme="dark"]{
  --fg:#d4d4d4; --fg-strong:#fafafa; --muted:#a3a3a3; --border:#2a2a2c;
  --bg:#0f1115; --bg-soft:#15171c; --brand-soft:color-mix(in srgb,var(--brand) 18%,#0f1115);
  --shadow:0 1px 3px rgba(0,0,0,.5),0 10px 30px rgba(0,0,0,.4);
}
:root[data-theme="light"]{--fg:#404040;--fg-strong:#171717;--muted:#737373;--border:#e5e5e5;--bg:#fff;--bg-soft:#fafafa;--brand-soft:color-mix(in srgb,var(--brand) 10%,#fff)}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--fg);background:var(--bg);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font-head);color:var(--fg-strong);line-height:1.08;margin:0 0 .5em;font-weight:700;letter-spacing:-.02em}
h1{font-size:clamp(2.6rem,6.5vw,5rem)}
h2{font-size:clamp(1.9rem,4vw,2.9rem)}
h3{font-size:1.25rem;letter-spacing:-.01em}
p{margin:0 0 1rem}

.container{max-width:var(--maxw);margin:0 auto;padding:0 1.25rem}
.section{padding:clamp(3.5rem,7vw,6rem) 0}
.section--soft{background:var(--bg-soft)}
.eyebrow{color:var(--brand);font-weight:700;letter-spacing:.1em;text-transform:uppercase;font-size:.78rem}
.lead{font-size:1.15rem;color:var(--muted);max-width:62ch}
.center{text-align:center}.center .lead{margin-left:auto;margin-right:auto}

/* Boutons */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.5rem;border-radius:10px;font-weight:600;font-size:.98rem;cursor:pointer;border:1.5px solid transparent;transition:.16s;line-height:1;font-family:var(--font)}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn--primary{background:var(--brand);color:#fff}.btn--primary:hover{background:var(--brand-dark)}
.btn--dark{background:var(--fg-strong);color:var(--bg)}.btn--dark:hover{background:#000}
.btn--outline{border-color:var(--border);color:var(--fg-strong);background:var(--bg)}.btn--outline:hover{border-color:var(--fg-strong)}
.btn--ghost{border-color:rgba(255,255,255,.35);color:#fff}.btn--ghost:hover{background:rgba(255,255,255,.1)}
.btn--lg{padding:1rem 1.8rem;font-size:1.05rem}

/* Grilles & cartes */
.grid{display:grid;gap:1.5rem}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:1.7rem;transition:border-color .18s,box-shadow .18s,transform .18s}
.card:hover{border-color:var(--brand);box-shadow:var(--shadow);transform:translateY(-3px)}
.card .ico{display:inline-grid;place-items:center;width:2.9rem;height:2.9rem;border-radius:12px;background:var(--brand-soft);color:var(--brand);margin-bottom:.9rem}
.ico svg{width:1.55rem;height:1.55rem;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.mode-ico{display:inline-flex;align-items:center;justify-content:center;width:2.4rem;height:2.4rem;border-radius:10px;background:var(--brand-soft);color:var(--brand);margin-right:.2rem;vertical-align:middle}
.mode-ico svg{width:1.35rem;height:1.35rem;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.card h3{margin:.2rem 0 .4rem}
.card p{margin:0;color:var(--muted);font-size:.96rem}
@media(max-width:860px){.grid-3,.grid-2,.grid-4{grid-template-columns:1fr}}

/* Effets : reveal au scroll */
.reveal{opacity:0;transform:translateY(38px) scale(.98);will-change:opacity,transform}
.reveal.in{opacity:1;transform:none;transition:opacity .75s cubic-bezier(.2,.7,.2,1) var(--d,0ms),transform .85s cubic-bezier(.16,.8,.2,1) var(--d,0ms)}
/* Surlignage orange animé */
.mark{position:relative;font-weight:700;color:var(--fg-strong);white-space:nowrap;z-index:0}
.mark::before{content:'';position:absolute;left:-.12em;right:100%;bottom:.04em;height:.45em;background:rgba(236,48,19,.35);border-radius:3px;z-index:-1;transition:right .7s cubic-bezier(.2,.7,.2,1) .3s}
.in .mark::before,.mark.in::before{right:-.12em}
.mark.on-dark{color:#fff}.mark.on-dark::before{background:rgba(236,48,19,.5)}
/* Soulignement qui se dessine */
.uline{position:relative;font-weight:700}
.uline::after{content:'';position:absolute;left:0;right:100%;bottom:-.12em;height:3px;background:var(--brand);border-radius:2px;transition:right .7s cubic-bezier(.2,.7,.2,1) .3s}
.in .uline::after,.uline.in::after{right:0}
/* Typewriter */
.typed{color:var(--brand);font-weight:800}
.typed-cursor{display:inline-block;width:.09em;height:1.05em;background:var(--brand);margin-left:.06em;vertical-align:-.12em;animation:caret 1s steps(1) infinite}
@keyframes caret{50%{opacity:0}}
/* Barre de progression scroll */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:9998;background:linear-gradient(90deg,var(--brand),#fbbf24);box-shadow:0 0 10px rgba(236,48,19,.6)}
/* Marquee */
.marquee{overflow:hidden;background:var(--fg-strong);color:#fff;padding:1rem 0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:inline-flex;align-items:center;gap:2.4rem;white-space:nowrap;animation:marquee 30s linear infinite;font-family:var(--font-head);font-weight:700;text-transform:uppercase;letter-spacing:.06em;font-size:1.1rem}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track .dot{color:var(--brand)}
@keyframes marquee{to{transform:translateX(-50%)}}
/* Découpes de coins */
.cut-corner{clip-path:polygon(0 0,100% 0,100% 100%,2.4rem 100%,0 calc(100% - 2.4rem))}
.cut-tr{clip-path:polygon(0 0,calc(100% - 2.4rem) 0,100% 2.4rem,100% 100%,0 100%)}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.marquee-track{animation:none}}

/* Nav */
.nav{position:sticky;top:0;z-index:100;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav .container{display:flex;align-items:center;gap:1rem;padding-top:.9rem;padding-bottom:.9rem}
.brand-logo{font-family:var(--font-head);font-weight:800;font-size:1.3rem;letter-spacing:-.03em;color:var(--fg-strong)}
.brand-logo b{color:var(--brand)}
.nav .sp{flex:1}

/* Hero */
.hero{position:relative;background:var(--bg-dark);color:#fff;overflow:hidden}
.hero::after{content:'';position:absolute;inset:0;background:radial-gradient(1200px 500px at 70% -10%,rgba(236,48,19,.25),transparent 60%),radial-gradient(800px 400px at 0% 110%,rgba(236,48,19,.14),transparent 55%);pointer-events:none}
.hero .container{position:relative;z-index:1;padding-top:clamp(4rem,10vw,7rem);padding-bottom:clamp(4rem,10vw,7rem)}
.hero h1{color:#fff;max-width:16ch;text-wrap:balance}
.hero .lead{color:rgba(255,255,255,.82);font-size:1.25rem}
.hero-grid-lines{position:absolute;inset:0;opacity:.5;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:44px 44px;-webkit-mask-image:radial-gradient(70% 60% at 50% 40%,#000,transparent);mask-image:radial-gradient(70% 60% at 50% 40%,#000,transparent)}
.hero-typed{font-family:var(--font-head);font-size:1.1rem;min-height:1.5em;margin:0 0 1.6rem;color:#fff}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:2rem;align-items:center}
.hero-art{display:flex;justify-content:center}
.hero-art svg{max-width:100%;height:auto;filter:drop-shadow(0 30px 50px rgba(0,0,0,.45))}
@media(max-width:820px){.hero-inner{grid-template-columns:1fr}.hero-art{margin-top:1.5rem;order:2}.hero-art svg{width:260px}}

/* Pricing */
.price{max-width:420px;margin:0 auto;background:var(--bg);border:2px solid var(--brand);border-radius:18px;padding:2rem;text-align:center;box-shadow:var(--shadow)}
.price .amt{font-family:var(--font-head);font-size:3.2rem;font-weight:800;letter-spacing:-.03em;color:var(--fg-strong)}
.price .amt span{font-size:1rem;color:var(--muted);font-weight:600}
.price ul{text-align:left;list-style:none;padding:0;margin:1.2rem 0}
.price li{padding:.35rem 0 .35rem 1.7rem;position:relative;color:var(--fg)}
.price li::before{content:'✓';position:absolute;left:0;color:var(--brand);font-weight:800}

/* Footer */
.foot{background:var(--fg-strong);color:rgba(255,255,255,.75);padding:2.4rem 0;font-size:.9rem}
.foot a{color:#fff}
.cta-row{display:flex;gap:.8rem;flex-wrap:wrap}
.center .cta-row{justify-content:center}