/* =========================================================================
   YLYSYS — Feuille de style principale
   Éditeur de logiciels · Design system
   ========================================================================= */

/* ------------------------------------------------------------------ FONTS */
/* Polices auto-hébergées (subset latin) — performance + conformité RGPD    */

@font-face{font-family:'Sora';font-style:normal;font-weight:400;font-display:swap;
  src:url('../fonts/sora-latin-400-normal.woff2') format('woff2');}
@font-face{font-family:'Sora';font-style:normal;font-weight:600;font-display:swap;
  src:url('../fonts/sora-latin-600-normal.woff2') format('woff2');}
@font-face{font-family:'Sora';font-style:normal;font-weight:700;font-display:swap;
  src:url('../fonts/sora-latin-700-normal.woff2') format('woff2');}
@font-face{font-family:'Sora';font-style:normal;font-weight:800;font-display:swap;
  src:url('../fonts/sora-latin-800-normal.woff2') format('woff2');}

@font-face{font-family:'Manrope';font-style:normal;font-weight:400;font-display:swap;
  src:url('../fonts/manrope-latin-400-normal.woff2') format('woff2');}
@font-face{font-family:'Manrope';font-style:normal;font-weight:500;font-display:swap;
  src:url('../fonts/manrope-latin-500-normal.woff2') format('woff2');}
@font-face{font-family:'Manrope';font-style:normal;font-weight:600;font-display:swap;
  src:url('../fonts/manrope-latin-600-normal.woff2') format('woff2');}
@font-face{font-family:'Manrope';font-style:normal;font-weight:700;font-display:swap;
  src:url('../fonts/manrope-latin-700-normal.woff2') format('woff2');}

@font-face{font-family:'Space Mono';font-style:normal;font-weight:400;font-display:swap;
  src:url('../fonts/space-mono-latin-400-normal.woff2') format('woff2');}
@font-face{font-family:'Space Mono';font-style:normal;font-weight:700;font-display:swap;
  src:url('../fonts/space-mono-latin-700-normal.woff2') format('woff2');}

/* ----------------------------------------------------------------- TOKENS */
:root{
  /* Encre & surfaces sombres */
  --ink:#0A0E1A;
  --ink-soft:#0E1424;
  --ink-elev:#151C30;
  --ink-elev-2:#1B2338;

  /* Surfaces claires */
  --paper:#FFFFFF;
  --mist:#F5F6FB;
  --mist-2:#EDEFF7;

  /* Marque */
  --indigo:#4F5BFF;
  --indigo-600:#3A46E6;
  --violet:#8B5CF6;
  --amber:#FFB020;
  --amber-soft:#FFCB63;

  /* Texte sur clair */
  --text:#111726;
  --text-body:#535D73;
  --text-muted:#828BA1;

  /* Texte sur sombre */
  --invert:#EEF0F8;
  --invert-body:#A6AEC4;
  --invert-muted:#6B7488;

  /* Filets */
  --line:#E7E9F2;
  --line-2:#DBDEEB;
  --line-dark:rgba(255,255,255,.09);
  --line-dark-2:rgba(255,255,255,.16);

  /* Rayons */
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;

  /* Ombres */
  --sh-sm:0 1px 2px rgba(16,22,38,.06), 0 2px 6px rgba(16,22,38,.05);
  --sh-md:0 6px 20px rgba(16,22,38,.08), 0 2px 6px rgba(16,22,38,.05);
  --sh-lg:0 24px 60px rgba(16,22,38,.14), 0 8px 24px rgba(16,22,38,.08);
  --glow-indigo:0 18px 50px -12px rgba(79,91,255,.55);

  /* Typo */
  --f-display:'Sora',system-ui,-apple-system,Segoe UI,sans-serif;
  --f-body:'Manrope',system-ui,-apple-system,Segoe UI,sans-serif;
  --f-mono:'Space Mono','SFMono-Regular',ui-monospace,Menlo,monospace;

  /* Mesures */
  --container:1180px;
  --pad-x:clamp(1.25rem,5vw,2rem);
  --section-y:clamp(4.5rem,9vw,7.5rem);
}

/* ------------------------------------------------------------------ RESET */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  font-family:var(--f-body);
  font-size:1.0625rem;
  line-height:1.65;
  color:var(--text-body);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea{font:inherit;color:inherit}
ul{list-style:none}
::selection{background:var(--indigo);color:#fff}

h1,h2,h3,h4{font-family:var(--f-display);color:var(--text);line-height:1.08;font-weight:700;letter-spacing:-.02em}

/* --------------------------------------------------------------- HELPERS */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--pad-x)}
.section{padding-block:var(--section-y)}
.section--ink{background:var(--ink);color:var(--invert-body)}
.section--mist{background:var(--mist)}

.eyebrow{
  font-family:var(--f-mono);font-size:.78rem;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--indigo);
  display:inline-flex;align-items:center;gap:.6ch;
}
.eyebrow::before{content:"";width:1.6rem;height:1px;background:currentColor;opacity:.6}
.section--ink .eyebrow{color:var(--amber)}

.section-head{max-width:44rem;margin-bottom:clamp(2.5rem,5vw,3.75rem)}
.section-head h2{
  font-size:clamp(1.9rem,4vw,2.85rem);margin-top:1.1rem;
}
.section-head .lead{
  margin-top:1.25rem;font-size:clamp(1.05rem,1.6vw,1.2rem);
  color:var(--text-body);max-width:38rem;
}
.section--ink .section-head h2{color:var(--invert)}
.section--ink .section-head .lead{color:var(--invert-body)}

/* strong accent word inside headings */
.hl{color:var(--indigo)}
.section--ink .hl{color:var(--amber)}

/* ---------------------------------------------------------------- BUTTONS */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.6ch;
  font-family:var(--f-body);font-weight:600;font-size:.98rem;
  padding:.85em 1.5em;border-radius:var(--r-pill);
  transition:transform .18s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.btn svg{width:1.05em;height:1.05em;transition:transform .2s ease}
.btn--primary{background:var(--indigo);color:#fff;box-shadow:var(--glow-indigo)}
.btn--primary:hover{background:var(--indigo-600);transform:translateY(-2px)}
.btn--primary:hover svg{transform:translateX(3px)}
.btn--ghost{border:1px solid var(--line-2);color:var(--text);background:var(--paper)}
.btn--ghost:hover{border-color:var(--indigo);color:var(--indigo);transform:translateY(-2px)}
.btn--onink{border:1px solid var(--line-dark-2);color:var(--invert);background:rgba(255,255,255,.02)}
.btn--onink:hover{background:rgba(255,255,255,.07);border-color:var(--line-dark-2);transform:translateY(-2px)}
.btn--lg{padding:1em 1.75em;font-size:1.02rem}

/* ================================================================== NAV == */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  transition:background .3s ease, box-shadow .3s ease, border-color .3s ease;
  border-bottom:1px solid transparent;
}
.nav__inner{
  max-width:var(--container);margin-inline:auto;padding:1.05rem var(--pad-x);
  display:flex;align-items:center;justify-content:space-between;gap:2rem;
}
.nav.is-scrolled{
  background:rgba(10,14,26,.82);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line-dark);
}
/* brand */
.brand{display:inline-flex;align-items:center;gap:.65rem;color:var(--invert)}
.brand__mark{width:30px;height:30px;flex:0 0 auto}
.brand__word{font-family:var(--f-display);font-weight:800;font-size:1.22rem;letter-spacing:.02em;color:#fff}
/* links */
.nav__links{display:flex;align-items:center;gap:.35rem}
.nav__link{
  padding:.5rem .85rem;border-radius:var(--r-pill);font-weight:500;font-size:.95rem;
  color:var(--invert-body);transition:color .2s ease, background .2s ease;
}
.nav__link:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav__cta{margin-left:.5rem}
/* burger */
.nav__burger{display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;color:#fff;
  border:1px solid var(--line-dark-2)}
.nav__burger span{display:block;width:20px;height:2px;background:currentColor;position:relative;transition:transform .25s ease,opacity .2s ease}
.nav__burger span::before,.nav__burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:currentColor;transition:transform .25s ease}
.nav__burger span::before{top:-6px}.nav__burger span::after{top:6px}
.nav.is-open .nav__burger span{background:transparent}
.nav.is-open .nav__burger span::before{transform:translateY(6px) rotate(45deg)}
.nav.is-open .nav__burger span::after{transform:translateY(-6px) rotate(-45deg)}

/* ================================================================= HERO == */
.hero{
  position:relative;background:var(--ink);color:var(--invert-body);
  overflow:hidden;isolation:isolate;
  padding-top:clamp(8.5rem,15vw,11rem);padding-bottom:clamp(5rem,10vw,8rem);
}
/* ambient glows behind everything */
.hero__aura{position:absolute;inset:0;z-index:-2;pointer-events:none}
.hero__aura::before,.hero__aura::after{content:"";position:absolute;border-radius:50%;filter:blur(90px)}
.hero__aura::before{width:46rem;height:46rem;top:-16rem;right:-14rem;
  background:radial-gradient(circle,rgba(79,91,255,.42),transparent 60%)}
.hero__aura::after{width:34rem;height:34rem;bottom:-14rem;left:-10rem;
  background:radial-gradient(circle,rgba(139,92,246,.30),transparent 62%)}
/* faint grid */
.hero__grid{position:absolute;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line-dark) 1px,transparent 1px),
                   linear-gradient(90deg,var(--line-dark) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 60% 20%,#000 30%,transparent 78%);
          mask-image:radial-gradient(ellipse 90% 70% at 60% 20%,#000 30%,transparent 78%);}

.hero__inner{
  max-width:var(--container);margin-inline:auto;padding-inline:var(--pad-x);
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4rem);align-items:center;
}
.hero__col{max-width:38rem}
.hero h1{
  font-size:clamp(2.5rem,5.6vw,4.3rem);font-weight:800;color:var(--invert);
  margin-top:1.5rem;letter-spacing:-.03em;
}
.hero__sub{margin-top:1.6rem;font-size:clamp(1.08rem,1.7vw,1.28rem);color:var(--invert-body);max-width:34rem}
.hero__actions{margin-top:2.4rem;display:flex;flex-wrap:wrap;gap:.85rem}
.hero__meta{
  margin-top:3rem;display:flex;flex-wrap:wrap;gap:1.6rem 2.4rem;
  padding-top:1.8rem;border-top:1px solid var(--line-dark);
}
.hero__meta .kpi{display:flex;flex-direction:column;gap:.15rem}
.hero__meta .kpi b{font-family:var(--f-display);font-size:1.35rem;font-weight:700;color:#fff;letter-spacing:-.01em}
.hero__meta .kpi span{font-size:.85rem;color:var(--invert-muted)}

/* hero signature graphic */
.hero__art{position:relative;width:100%;max-width:33rem;margin-inline:auto}
.hero__art svg{width:100%;height:auto;overflow:visible}
.node-card{fill:var(--ink-elev);stroke:var(--line-dark-2);stroke-width:1}
.node-bar{fill:rgba(255,255,255,.14)}
.node-dot{fill:var(--indigo)}
.node-dot--amber{fill:var(--amber)}
.node-halo{fill:rgba(79,91,255,.14)}
.node-halo--amber{fill:rgba(255,176,32,.18)}
.pulse{stroke-dasharray:9 405;stroke:var(--amber);stroke-width:2.5;fill:none;opacity:.95;
  filter:drop-shadow(0 0 5px rgba(255,176,32,.8));animation:dash 4s linear infinite}
.float-a{animation:floatA 7s ease-in-out infinite}
.float-b{animation:floatB 8.5s ease-in-out infinite}
@keyframes dash{from{stroke-dashoffset:0}to{stroke-dashoffset:-414}}
@keyframes floatA{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes floatB{0%,100%{transform:translateY(0)}50%{transform:translateY(10px)}}

/* ============================================================== SOCIÉTÉ == */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4.5rem);align-items:start}
.about__body p{margin-top:1.1rem;max-width:34rem}
.about__body p:first-child{margin-top:0}
.about__quote{
  font-family:var(--f-display);font-weight:600;font-size:clamp(1.3rem,2.2vw,1.7rem);
  color:var(--text);line-height:1.28;letter-spacing:-.01em;
}
.value-list{display:grid;gap:1rem}
.value{
  display:grid;grid-template-columns:auto 1fr;gap:1.1rem;align-items:start;
  padding:1.4rem 1.5rem;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--paper);box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.value:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--line-2)}
.value__ico{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(79,91,255,.14),rgba(139,92,246,.14));
  color:var(--indigo);flex:0 0 auto;
}
.value__ico svg{width:22px;height:22px}
.value h3{font-size:1.1rem;margin-bottom:.3rem}
.value p{font-size:.96rem;margin:0}

/* =========================================================== APPLICATIONS */
.apps{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.app-card{
  position:relative;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--paper);padding:2rem;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.app-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:transparent}
/* Featured (Aenone) spans full width, dark treatment */
.app-card--feat{
  grid-column:1 / -1;color:var(--invert-body);
  background:linear-gradient(150deg,var(--ink-soft) 0%,var(--ink) 60%);
  border-color:var(--line-dark);
  display:grid;grid-template-columns:1.1fr .9fr;gap:2.5rem;align-items:center;padding:clamp(2rem,4vw,3rem);
}
.app-card--feat:hover{box-shadow:0 30px 70px -20px rgba(10,14,26,.7)}
.app-card--feat .app__name{color:#fff}
.app-badge{
  display:inline-flex;align-items:center;gap:.5ch;align-self:flex-start;
  font-family:var(--f-mono);font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:.4em .8em;border-radius:var(--r-pill);
  background:rgba(79,91,255,.12);color:var(--indigo);border:1px solid rgba(79,91,255,.25);
}
.app-badge--amber{background:rgba(255,176,32,.14);color:var(--amber-soft);border-color:rgba(255,176,32,.32)}
.app-badge--soft{background:var(--mist-2);color:var(--text-muted);border-color:var(--line-2)}
.app-badge .dot{width:6px;height:6px;border-radius:50%;background:currentColor;box-shadow:0 0 0 3px rgba(255,176,32,.18)}
.app__name{font-family:var(--f-display);font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;margin:1rem 0 .1rem;letter-spacing:-.02em}
.app__tag{font-family:var(--f-display);font-weight:600;color:var(--indigo);font-size:1.05rem;margin-bottom:.9rem}
.app-card--feat .app__tag{color:var(--amber-soft)}
.app__desc{font-size:1rem;margin-bottom:1.4rem}
.app-card--feat .app__desc{color:var(--invert-body)}
.app__feats{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:auto}
.chip{
  display:inline-flex;align-items:center;gap:.5ch;font-size:.85rem;font-weight:600;
  padding:.45em .9em;border-radius:var(--r-pill);
  background:var(--mist);color:var(--text-body);border:1px solid var(--line);
}
.app-card--feat .chip{background:rgba(255,255,255,.05);color:var(--invert);border-color:var(--line-dark-2)}
.chip svg{width:15px;height:15px;color:var(--indigo)}
.app-card--feat .chip svg{color:var(--amber)}
/* right visual panel of featured card */
.app__visual{position:relative;min-height:200px;display:grid;place-items:center}
.app__visual svg{width:100%;max-width:20rem;height:auto;overflow:visible}

.app-card--sm .app__name{font-size:1.5rem}
.app-card__foot{margin-top:1.3rem;padding-top:1.1rem;border-top:1px solid var(--line);
  font-family:var(--f-mono);font-size:.78rem;letter-spacing:.05em;color:var(--text-muted)}

/* ============================================================== APPROCHE == */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem;counter-reset:step}
.step{
  position:relative;padding:1.75rem 1.5rem;border-radius:var(--r-md);
  background:rgba(255,255,255,.02);border:1px solid var(--line-dark);
  transition:transform .2s ease,background .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-4px);background:rgba(255,255,255,.045);border-color:var(--line-dark-2)}
.step__n{font-family:var(--f-mono);font-size:.8rem;font-weight:700;color:var(--amber);letter-spacing:.1em}
.step h3{color:var(--invert);font-size:1.12rem;margin:.9rem 0 .5rem}
.step p{font-size:.92rem;color:var(--invert-body);margin:0}
.step::after{content:"";position:absolute;top:2.15rem;right:-.75rem;width:1.5rem;height:1px;
  background:var(--line-dark-2)}
.step:last-child::after{display:none}

/* =============================================================== CONTACT == */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(2rem,5vw,4rem);align-items:start}
.contact__aside p{margin-top:1.1rem;max-width:26rem}
.contact__links{margin-top:2rem;display:grid;gap:.9rem}
.contact-item{display:flex;align-items:center;gap:.9rem;font-weight:600;color:var(--text)}
.contact-item__ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--mist);border:1px solid var(--line);color:var(--indigo);flex:0 0 auto}
.contact-item__ico svg{width:20px;height:20px}
.contact-item small{display:block;font-weight:500;color:var(--text-muted);font-size:.82rem}
.contact-item a:hover{color:var(--indigo)}

/* form */
.form{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:clamp(1.5rem,3vw,2.25rem);box-shadow:var(--sh-md);
}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{margin-bottom:1.05rem;display:flex;flex-direction:column}
.field label{font-size:.85rem;font-weight:600;color:var(--text);margin-bottom:.45rem}
.field .req{color:var(--indigo)}
.field input,.field textarea{
  width:100%;padding:.85rem 1rem;border:1px solid var(--line-2);border-radius:var(--r-sm);
  background:var(--mist);color:var(--text);transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
  font-size:.98rem;
}
.field textarea{resize:vertical;min-height:130px}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--indigo);background:var(--paper);
  box-shadow:0 0 0 4px rgba(79,91,255,.12);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-muted)}
/* honeypot */
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form__foot{display:flex;flex-wrap:wrap;align-items:center;gap:1rem;justify-content:space-between;margin-top:.4rem}
.form__note{font-size:.82rem;color:var(--text-muted);max-width:22rem}
.form__submit{position:relative}
.form__submit[disabled]{opacity:.65;cursor:progress}
/* feedback */
.form__msg{margin-top:1.1rem;padding:.9rem 1.1rem;border-radius:var(--r-sm);font-size:.92rem;font-weight:500;display:none}
.form__msg.is-visible{display:block}
.form__msg--ok{background:rgba(34,175,120,.1);color:#15794f;border:1px solid rgba(34,175,120,.28)}
.form__msg--err{background:rgba(232,72,72,.08);color:#b23434;border:1px solid rgba(232,72,72,.25)}

/* ================================================================ FOOTER == */
.footer{background:var(--ink);color:var(--invert-body);padding-top:clamp(3.5rem,7vw,5.5rem)}
.footer__top{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:2.5rem;
  padding-bottom:3rem;border-bottom:1px solid var(--line-dark);
}
.footer__brand .brand{margin-bottom:1.1rem}
.footer__brand p{max-width:22rem;font-size:.95rem}
.footer__tagline{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.08em;color:var(--invert-muted);
  text-transform:uppercase;margin-top:1.2rem}
.footer h4{color:#fff;font-family:var(--f-display);font-size:.82rem;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;margin-bottom:1.1rem}
.footer__col a,.footer__col span{display:block;color:var(--invert-body);font-size:.95rem;padding:.28rem 0;
  transition:color .18s ease}
.footer__col a:hover{color:#fff}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center;
  padding-block:1.75rem;font-size:.85rem;color:var(--invert-muted);
}
.footer__bottom a{color:var(--invert-body)}
.footer__bottom a:hover{color:#fff}
.footer__legal-links{display:flex;gap:1.4rem;flex-wrap:wrap}

/* ============================================================= REVEAL FX == */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.08s}
.reveal[data-d="2"]{transition-delay:.16s}
.reveal[data-d="3"]{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .pulse,.float-a,.float-b{animation:none}
}

/* focus visibility */
:focus-visible{outline:2px solid var(--indigo);outline-offset:3px;border-radius:4px}
.section--ink :focus-visible,.hero :focus-visible,.footer :focus-visible{outline-color:var(--amber)}

/* ============================================ LEGAL / CONTENT PAGE ======== */
.page-hero{background:var(--ink);color:var(--invert-body);padding-top:clamp(8rem,14vw,10rem);padding-bottom:clamp(2.5rem,5vw,3.5rem)}
.page-hero h1{color:var(--invert);font-size:clamp(2rem,4.5vw,3rem);margin-top:1rem}
.legal{padding-block:clamp(3rem,6vw,4.5rem);max-width:52rem}
.legal h2{font-size:1.3rem;margin:2.4rem 0 .8rem;color:var(--text)}
.legal h2:first-child{margin-top:0}
.legal p{margin-bottom:.9rem}
.legal a{color:var(--indigo);text-decoration:underline;text-underline-offset:2px}
.legal strong{color:var(--text)}
.legal address{font-style:normal;line-height:1.7}
.fill{background:#FFF3C4;color:#6b5300;padding:.05em .4em;border-radius:4px;font-weight:600;
  box-decoration-break:clone;-webkit-box-decoration-break:clone}
.back-link{display:inline-flex;align-items:center;gap:.5ch;color:var(--indigo);font-weight:600;margin-top:2rem}
.back-link svg{width:1em;height:1em;transition:transform .2s ease}
.back-link:hover svg{transform:translateX(-3px)}

/* ============================================================ RESPONSIVE == */
@media (max-width:960px){
  .hero__inner{grid-template-columns:1fr;gap:3rem}
  .hero__art{order:-1;max-width:26rem}
  .hero__col{max-width:none}
  .split,.contact-grid{grid-template-columns:1fr;gap:2.5rem}
  .apps{grid-template-columns:1fr}
  .app-card--feat{grid-template-columns:1fr;gap:2rem}
  .app__visual{min-height:auto;order:-1}
  .steps{grid-template-columns:1fr 1fr}
  .step::after{display:none}
  .footer__top{grid-template-columns:1fr 1fr;gap:2rem}
  .footer__brand{grid-column:1 / -1}
}
@media (max-width:640px){
  :root{--section-y:clamp(3.5rem,12vw,5rem)}
  .nav__links{
    position:fixed;inset:0 0 auto 0;top:0;flex-direction:column;align-items:stretch;gap:.25rem;
    background:rgba(10,14,26,.97);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    padding:5.5rem 1.5rem 2rem;border-bottom:1px solid var(--line-dark);
    transform:translateY(-100%);transition:transform .35s cubic-bezier(.4,0,.2,1);
    box-shadow:0 24px 50px rgba(0,0,0,.4);
  }
  .nav.is-open .nav__links{transform:translateY(0)}
  .nav__link{padding:.9rem 1rem;font-size:1.05rem}
  .nav__cta{margin:.5rem 0 0}
  .nav__cta .btn{width:100%}
  .nav__burger{display:inline-flex}
  .form__row{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .hero__meta{gap:1.2rem 1.8rem}
  .footer__top{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}

/* =========================================================================
   EXTENSION — YLYGO, chiffres clés, services, bilinguisme
   ========================================================================= */

:root{
  /* Palette de marque YLYGO (bleu nuit + or) */
  --ylygo-navy:#1C2760;
  --ylygo-navy-2:#141C48;
  --ylygo-gold:#FDC93A;
  --ylygo-gold-2:#FFB020;
}

/* ------------------------------------------------- Sélecteur de langue -- */
.lang{display:inline-flex;align-items:center;gap:.15rem;margin-left:.35rem;
  border:1px solid var(--line-dark-2);border-radius:var(--r-pill);padding:.2rem}
.nav.is-scrolled .lang{border-color:var(--line-2)}
.lang a{
  font-family:var(--f-mono);font-size:.72rem;letter-spacing:.06em;
  padding:.3rem .6rem;border-radius:var(--r-pill);color:var(--invert-body);
  transition:color .2s,background .2s;
}
.nav.is-scrolled .lang a{color:var(--text-muted)}
.lang a:hover{color:#fff}
.nav.is-scrolled .lang a:hover{color:var(--text)}
.lang a.is-active{background:var(--indigo);color:#fff}
.nav.is-scrolled .lang a.is-active{background:var(--indigo);color:#fff}

/* ------------------------------------------------------- Chiffres clés -- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;
  margin-top:3rem;padding-top:2.5rem;border-top:1px solid var(--line);
}
.section--ink .stats{border-top-color:var(--line-dark)}
.stat b{
  display:block;font-family:var(--f-display);font-weight:800;
  font-size:clamp(2rem,4.2vw,2.9rem);line-height:1;color:var(--text);
  letter-spacing:-.03em;
}
.section--ink .stat b{color:#fff}
.stat span{display:block;margin-top:.7rem;font-size:.94rem;color:var(--text-muted);line-height:1.45}
.section--ink .stat span{color:var(--invert-muted)}
.stat--gold b{color:var(--ylygo-navy)}
.section--ink .stat--gold b{color:var(--ylygo-gold)}

/* ------------------------------------------------- Grille de services --- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:2.6rem}
.svc{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
  padding:1.4rem 1.4rem 1.5rem;transition:transform .3s,box-shadow .3s,border-color .3s;
}
.svc:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--line-2)}
.section--ink .svc{background:var(--ink-elev);border-color:var(--line-dark)}
.section--ink .svc:hover{border-color:var(--line-dark-2);box-shadow:none}
.svc__ico{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--ylygo-navy);color:var(--ylygo-gold);margin-bottom:1rem;
}
.svc__ico svg{width:21px;height:21px}
.svc h3{font-size:1.06rem;letter-spacing:-.01em}
.section--ink .svc h3{color:#fff}
.svc p{margin-top:.5rem;font-size:.93rem;line-height:1.55;color:var(--text-muted)}
.section--ink .svc p{color:var(--invert-muted)}

/* ---------------------------------------------------- Bloc « 0 % » ------ */
.zero{
  background:var(--ylygo-navy);border-radius:var(--r-lg);
  padding:clamp(1.8rem,4vw,2.8rem);color:rgba(255,255,255,.78);
}
.zero__n{
  font-family:var(--f-display);font-weight:800;letter-spacing:-.04em;
  font-size:clamp(3.4rem,9vw,5rem);line-height:.95;color:var(--ylygo-gold);
}
.zero h3{color:#fff;font-size:1.15rem;margin-top:.6rem}
.zero p{margin-top:1.1rem;font-size:.99rem;line-height:1.6}
.zero .zero__note{margin-top:1.3rem;font-size:.92rem;color:var(--ylygo-gold);font-style:italic}

/* -------------------------------------------- Liste de points forts ----- */
.feats{display:grid;grid-template-columns:repeat(2,1fr);gap:1.6rem 2.4rem;margin-top:2.6rem}
.feat{display:flex;gap:1rem}
.feat__ico{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:rgba(253,201,58,.18);color:var(--ylygo-navy);
}
.section--ink .feat__ico{background:rgba(253,201,58,.16);color:var(--ylygo-gold)}
.feat__ico svg{width:19px;height:19px}
.feat h3{font-size:1.02rem}
.section--ink .feat h3{color:#fff}
.feat p{margin-top:.35rem;font-size:.93rem;line-height:1.55;color:var(--text-muted)}
.section--ink .feat p{color:var(--invert-muted)}

/* ------------------------------------------------------ Marque YLYGO ---- */
.ylygo-word{font-family:var(--f-display);font-weight:800;letter-spacing:-.02em}
.ylygo-word i{font-style:normal;color:var(--ylygo-gold)}
.app-card--ylygo{
  background:linear-gradient(150deg,var(--ylygo-navy) 0%,var(--ylygo-navy-2) 100%);
  border-color:rgba(255,255,255,.12);
}
.app-card--ylygo .app__name,.app-card--ylygo h3{color:#fff}
.app-card--ylygo .app__tag{color:var(--ylygo-gold)}
.app-card--ylygo .app__desc{color:rgba(255,255,255,.74)}
.app-card--ylygo .chip{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:rgba(255,255,255,.88)}
.app-card--ylygo .chip svg{color:var(--ylygo-gold)}
.app-badge--live{background:rgba(253,201,58,.16);color:var(--ylygo-gold);border-color:rgba(253,201,58,.3)}
.app-badge--live .dot{background:var(--ylygo-gold);box-shadow:0 0 0 4px rgba(253,201,58,.2)}

/* ------------------------------------------------- En-tête de page ------ */
.page-hero--ylygo{
  background:linear-gradient(160deg,var(--ylygo-navy) 0%,var(--ylygo-navy-2) 100%);
  color:rgba(255,255,255,.78);
  padding-bottom:clamp(3.5rem,7vw,5.5rem);
}
.page-hero--ylygo h1{color:#fff}
.page-hero--ylygo .eyebrow{color:var(--ylygo-gold)}
.page-hero--ylygo .eyebrow::before{background:var(--ylygo-gold)}
.page-hero__sub{margin-top:1.3rem;font-size:clamp(1.02rem,2vw,1.18rem);line-height:1.6;max-width:62ch}
.page-hero__actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:2rem}
.btn--gold{background:var(--ylygo-gold);color:#1A2350;font-weight:700}
.btn--gold:hover{background:#FFD65E;transform:translateY(-2px)}

/* -------------------------------------------------------- Bandeau CTA -- */
.cta-band{
  background:var(--ylygo-navy);border-radius:var(--r-lg);
  padding:clamp(1.8rem,4vw,2.6rem);display:flex;flex-wrap:wrap;gap:1.4rem;
  align-items:center;justify-content:space-between;
}
.cta-band h3{color:#fff;font-size:clamp(1.3rem,2.6vw,1.65rem)}
.cta-band p{color:rgba(255,255,255,.7);margin-top:.5rem;font-size:.98rem;max-width:56ch}

/* --------------------------------------------------------- Responsive -- */
@media (max-width:960px){
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr);gap:1.8rem}
  .feats{grid-template-columns:1fr}
}
@media (max-width:640px){
  .svc-grid{grid-template-columns:1fr}
  .lang{margin:.9rem 0 0;align-self:flex-start}
  .nav.is-scrolled .lang{border-color:var(--line-dark-2)}
  .nav.is-scrolled .lang a{color:var(--invert-body)}
  .cta-band{flex-direction:column;align-items:flex-start}
}