/* =========================================================
   gseconsulting.fr — feuille de style principale
   ========================================================= */

*,
*::before,
*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

.gsc-page{background:#FFFFFF;color:#0A0A0A;font-family:'Inter',sans-serif;padding:0;margin:0;position:relative;overflow-x:hidden}

img,svg{max-width:100%;display:block}

/* Focus visible sur tous les éléments interactifs */
a:focus-visible,
button:focus-visible{
  outline:2px solid #002FA7;
  outline-offset:3px;
  border-radius:1px;
}

/* =========================================================
   Header & navigation
   ========================================================= */

.gsc-header{display:flex;justify-content:space-between;align-items:center;padding:24px 48px;font-size:13px;position:relative;z-index:5;background:#FFFFFF}
.gsc-logo{font-family:'Playfair Display',serif;font-style:italic;font-weight:400;font-size:20px;color:#0A0A0A;letter-spacing:-0.01em;text-decoration:none}
.gsc-nav{display:flex;gap:32px;color:#0A0A0A}
.gsc-nav a{color:#0A0A0A;text-decoration:none;cursor:pointer;transition:color 0.2s}
.gsc-nav a:hover{color:#002FA7}

.gsc-nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:36px;
  height:36px;
  padding:0;
  background:none;
  border:none;
  cursor:pointer;
  z-index:6;
}
.gsc-nav-toggle-bar{
  display:block;
  width:100%;
  height:2px;
  background:#0A0A0A;
  transition:transform 0.2s, opacity 0.2s;
}
.gsc-nav-toggle[aria-expanded="true"] .gsc-nav-toggle-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.gsc-nav-toggle[aria-expanded="true"] .gsc-nav-toggle-bar:nth-child(2){opacity:0}
.gsc-nav-toggle[aria-expanded="true"] .gsc-nav-toggle-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* =========================================================
   Hero
   ========================================================= */

.gsc-hero-wrap{position:relative;width:100%}
.gsc-hero-riley{width:100%;height:400px;display:block}
.gsc-slogan-overlap{position:relative;margin-top:-90px;padding:0 48px 40px;z-index:3}
.gsc-slogan-bg{background:#FFFFFF;display:inline-block;padding:24px 32px 8px 0}
.gsc-slogan-overlap h1{font-family:'Playfair Display',serif;font-weight:400;font-size:clamp(36px,7vw,64px);line-height:1.05;letter-spacing:-0.025em;margin:0;color:#0A0A0A}
.gsc-slogan-overlap .accent{color:#002FA7;font-style:italic}
.gsc-signature{font-family:'Inter',sans-serif;font-size:13px;color:#0A0A0A;margin-top:28px;letter-spacing:0.02em}
.gsc-signature .sep{color:#002FA7;margin:0 8px}

/* =========================================================
   Positionnement
   ========================================================= */

.gsc-pos{padding:88px 64px 72px;max-width:920px}
.gsc-pos .kicker{font-size:11px;letter-spacing:0.15em;text-transform:uppercase;color:#002FA7;margin-bottom:24px;font-weight:600}
.gsc-pos .lead{font-family:'Playfair Display',serif;font-weight:400;font-size:32px;line-height:1.35;color:#0A0A0A;margin:0 0 32px}
.gsc-pos p{font-size:16px;line-height:1.7;color:#333333;margin:0 0 18px;max-width:680px}
.gsc-pos p:last-child{margin-bottom:0}

/* =========================================================
   Ce que j'apporte
   ========================================================= */

.gsc-apporte{padding:0 64px 96px}
.gsc-apporte .section-title{font-family:'Playfair Display',serif;font-style:italic;font-weight:400;font-size:14px;color:#002FA7;margin-bottom:40px;letter-spacing:0.02em}
.grid-apporte{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1.5fr 1fr;grid-template-rows:auto auto;gap:48px 40px}
.apporte-item{border-top:1px solid #E5E5E5;padding-top:20px}
.apporte-item .num{font-family:'Playfair Display',serif;font-size:13px;color:#002FA7;display:block;margin-bottom:12px}
.apporte-item h3{font-family:'Playfair Display',serif;font-weight:500;font-size:22px;line-height:1.25;margin:0 0 10px;color:#0A0A0A}
.apporte-item p{font-size:14.5px;line-height:1.6;color:#555555;margin:0}
.apporte-item.large h3{font-size:26px}

/* =========================================================
   Thématiques
   ========================================================= */

.gsc-them{padding:96px 64px 80px}
.gsc-them .kicker{font-size:11px;letter-spacing:0.15em;text-transform:uppercase;color:#002FA7;margin-bottom:24px;font-weight:600}
.gsc-them .lead{font-family:'Playfair Display',serif;font-weight:400;font-size:30px;line-height:1.4;color:#0A0A0A;margin:0 0 56px;max-width:800px}
.them-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.them-item{display:grid;grid-template-columns:80px 1fr;gap:32px;padding:32px 0;border-top:1px solid #E5E5E5}
.them-item:last-child{border-bottom:1px solid #E5E5E5}
.them-item .num{font-family:'Playfair Display',serif;font-size:15px;color:#002FA7;padding-top:4px}
.them-item h3{font-family:'Playfair Display',serif;font-weight:500;font-size:23px;line-height:1.3;margin:0 0 10px;color:#0A0A0A}
.them-item p{font-size:14.5px;line-height:1.65;color:#555555;margin:0;max-width:900px}

/* =========================================================
   Diagnostic & activation
   ========================================================= */

.gsc-maturity{background:#F5F6FB;padding:80px 64px 88px}
.gsc-maturity .kicker{font-size:11px;letter-spacing:0.15em;text-transform:uppercase;color:#002FA7;margin-bottom:20px;font-weight:600}
.gsc-maturity h2{font-family:'Playfair Display',serif;font-weight:400;font-size:28px;line-height:1.35;color:#0A0A0A;margin:0 0 12px;max-width:720px}
.gsc-maturity .sub{font-size:14.5px;color:#555555;margin:0 0 56px;max-width:660px;line-height:1.65}
.gsc-maturity .sub em{color:#002FA7;font-style:italic;font-family:'Playfair Display',serif}
.maturity-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.step{background:#FFFFFF;padding:32px 28px 28px;border-radius:2px;display:flex;flex-direction:column}
.step .step-label{font-size:11px;letter-spacing:0.12em;text-transform:uppercase;color:#999999;margin-bottom:16px;display:block}
.step .step-title{font-family:'Playfair Display',serif;font-weight:500;font-size:22px;color:#0A0A0A;margin:0 0 16px}
.step .bar-track{height:4px;background:#E5E5E5;border-radius:2px;margin-bottom:18px;overflow:hidden}
.step .bar-fill{height:100%;background:#002FA7;border-radius:2px}
.step .diag{font-size:13.5px;line-height:1.6;color:#555555;margin:0 0 22px}
.step .levers-label{font-size:10px;letter-spacing:0.14em;text-transform:uppercase;color:#002FA7;font-weight:600;margin:0 0 10px;border-top:1px solid #E5E5E5;padding-top:16px}
.step .levers{list-style:none;padding:0;margin:0}
.step .levers li{font-size:13px;line-height:1.55;color:#333333;padding-left:14px;position:relative;margin-bottom:6px}
.step .levers li:before{content:"→";position:absolute;left:0;color:#002FA7;font-family:'Playfair Display',serif}
.step .levers li:last-child{margin-bottom:0}
.step .kpi-note{font-size:11.5px;color:#888888;margin-top:12px;line-height:1.5;font-style:italic}

/* =========================================================
   Références
   ========================================================= */

.gsc-refs{background:#0A0A0A;padding:88px 64px 96px}
.gsc-refs .section-title{font-family:'Playfair Display',serif;font-style:italic;font-weight:400;font-size:14px;color:#7A8FD8;margin-bottom:48px;letter-spacing:0.02em}
.grid-refs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.ref-card{border-left:2px solid #002FA7;padding-left:24px}
.ref-card .ref-label{font-size:10px;letter-spacing:0.14em;text-transform:uppercase;color:#7A8FD8;margin-bottom:14px;display:block}
.ref-card h3{font-family:'Playfair Display',serif;font-weight:500;font-size:21px;line-height:1.3;color:#FFFFFF;margin:0 0 6px}
.ref-card .period{font-size:12px;color:#999999;margin-bottom:16px;display:block}
.ref-card p{font-size:13.5px;line-height:1.65;color:#C9C9C9;margin:0 0 14px}
.ref-card .result{font-size:13px;color:#7A8FD8;font-weight:500;margin:0}

/* =========================================================
   CTA principal
   ========================================================= */

.gsc-cta{background:#FFFFFF;padding:80px 64px 96px}
.gsc-cta .kicker{font-size:11px;letter-spacing:0.15em;text-transform:uppercase;color:#002FA7;margin-bottom:24px;font-weight:600}
.gsc-cta h2{font-family:'Playfair Display',serif;font-weight:400;font-size:clamp(32px,6vw,52px);line-height:1.1;color:#0A0A0A;margin:0 0 32px;max-width:720px;letter-spacing:-0.02em}
.gsc-cta h2 em{font-style:italic;color:#002FA7}
.gsc-cta .contact-block{display:flex;gap:64px;align-items:baseline;margin-top:48px;flex-wrap:wrap}
.gsc-cta .contact-link{font-family:'Playfair Display',serif;font-size:26px;color:#0A0A0A;text-decoration:none;border-bottom:1px solid #0A0A0A;padding-bottom:4px;transition:color 0.2s, border-color 0.2s}
.gsc-cta .contact-link:hover{color:#002FA7;border-color:#002FA7}
.gsc-cta .contact-secondary{font-size:14px;color:#666666;letter-spacing:0.02em}
.gsc-cta .contact-secondary a{color:#666666;text-decoration:none;border-bottom:1px solid #CCCCCC;padding-bottom:2px}

/* =========================================================
   Footer
   ========================================================= */

.gsc-footer-nav{background:#0A0A0A;padding:64px 64px 40px;color:#FFFFFF}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:56px}
.footer-col .footer-logo{font-family:'Playfair Display',serif;font-style:italic;font-weight:400;font-size:22px;color:#FFFFFF;margin-bottom:16px;letter-spacing:-0.01em}
.footer-col .footer-tagline{font-family:'Playfair Display',serif;font-size:15px;color:#C9C9C9;line-height:1.5;max-width:280px;margin:0}
.footer-col h4{font-size:10px;letter-spacing:0.14em;text-transform:uppercase;color:#7A8FD8;margin:0 0 20px;font-weight:600}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{font-size:13.5px;color:#C9C9C9;text-decoration:none;transition:color 0.2s}
.footer-col ul li a:hover{color:#FFFFFF}
.gsc-legal{border-top:1px solid #333333;padding-top:24px;display:flex;justify-content:space-between;align-items:center;font-size:11.5px;color:#888888;flex-wrap:wrap;gap:12px}
.gsc-legal .legal-links{display:flex;gap:24px}
.gsc-legal .legal-links a{color:#888888;text-decoration:none;transition:color 0.2s}
.gsc-legal .copyright{font-size:11.5px}

/* =========================================================
   Responsive — tablette (≤768px)
   ========================================================= */

@media (max-width:768px){
  .gsc-header{padding:20px 24px}

  .gsc-nav-toggle{display:flex}
  .gsc-nav{
    display:flex;
    flex-direction:column;
    gap:0;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    background:#FFFFFF;
    border-bottom:1px solid #E5E5E5;
    max-height:0;
    overflow:hidden;
    transition:max-height 0.25s ease;
  }
  .gsc-nav.is-open{max-height:320px}
  .gsc-nav a{padding:16px 24px;border-top:1px solid #E5E5E5}

  .gsc-hero-riley{height:auto;aspect-ratio:2/1}
  .gsc-slogan-overlap{margin-top:-40px;padding:0 24px 32px}
  .gsc-slogan-bg{padding:20px 0 8px}

  .gsc-pos{padding:64px 24px 56px}
  .gsc-pos .lead{font-size:26px}

  .gsc-apporte{padding:0 24px 72px}
  .grid-apporte{grid-template-columns:1fr;gap:40px}

  .gsc-them{padding:72px 24px 64px}
  .gsc-them .lead{font-size:24px;margin-bottom:40px}
  .them-item{grid-template-columns:56px 1fr;gap:20px;padding:24px 0}

  .gsc-maturity{padding:64px 24px 72px}
  .gsc-maturity h2{font-size:24px}
  .maturity-steps{grid-template-columns:1fr;gap:24px}

  .gsc-refs{padding:64px 24px 72px}
  .grid-refs{grid-template-columns:1fr;gap:36px}

  .gsc-cta{padding:80px 24px 72px}
  .gsc-cta .contact-block{gap:24px}

  .gsc-footer-nav{padding:48px 24px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 24px}
}

/* =========================================================
   Responsive — mobile (≤480px)
   ========================================================= */

@media (max-width:480px){
  .gsc-header{padding:16px 20px}
  .gsc-logo{font-size:18px}

  .gsc-slogan-overlap{margin-top:-28px;padding:0 20px 28px}
  .gsc-signature{font-size:12px}

  .gsc-pos{padding:48px 20px 44px}
  .gsc-pos .lead{font-size:22px}
  .gsc-pos p{font-size:15px}

  .gsc-apporte{padding:0 20px 56px}
  .apporte-item.large h3{font-size:22px}

  .gsc-them{padding:56px 20px 48px}
  .gsc-them .lead{font-size:21px}
  .them-item{grid-template-columns:1fr;gap:8px}
  .them-item .num{padding-top:0}

  .gsc-maturity{padding:48px 20px 56px}
  .gsc-maturity h2{font-size:21px}

  .gsc-refs{padding:48px 20px 56px}

  .gsc-cta{padding:64px 20px 56px}
  .gsc-cta .contact-block{flex-direction:column;gap:16px}

  .gsc-footer-nav{padding:40px 20px 24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .gsc-legal{flex-direction:column;align-items:flex-start}
}