:root{
  --turquoise:#16a6a6;
  --turquoise-dark:#0f7d7d;
  --turquoise-light:#e6f7f7;
  --ink:#1a2b32;
  --slate:#5a6b72;
  --bg:#ffffff;
  --bg-alt:#f6fbfb;
  --border:#e2eced;
  --radius:16px;
  --shadow:0 10px 40px rgba(22,166,166,.08);
  --max:1140px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
.container{width:90%;max-width:var(--max);margin:0 auto}
h1,h2,h3,h4{font-family:'Poppins',sans-serif;line-height:1.2;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,5vw,3.4rem);font-weight:700}
h2{font-size:clamp(1.7rem,3.5vw,2.4rem);font-weight:600;margin-bottom:.6em}
h3{font-size:1.25rem;font-weight:600;margin-bottom:.5em}
h4{font-size:1.05rem;font-weight:600}
p{color:var(--slate)}
a{color:inherit;text-decoration:none}
.eyebrow{text-transform:uppercase;letter-spacing:.15em;font-size:.78rem;font-weight:600;color:var(--turquoise);margin-bottom:1rem}
.center{text-align:center}
.eyebrow.center{display:block}
.lead{font-size:1.12rem;color:var(--slate)}
.subtitle{max-width:680px;margin:0 auto 2.5rem;text-align:center}

/* Header */
#header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:1rem 0}
.logo{font-family:'Poppins',sans-serif;font-weight:600;font-size:1.6rem;color:var(--turquoise);letter-spacing:-.03em}
nav ul{display:flex;align-items:center;gap:2rem;list-style:none}
nav ul a{font-weight:500;font-size:.95rem;color:var(--ink);transition:color .2s}
nav ul a:hover{color:var(--turquoise)}
.btn-nav{background:var(--turquoise);color:#fff!important;padding:.55rem 1.2rem;border-radius:50px}
.btn-nav:hover{background:var(--turquoise-dark)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer}
.burger span{width:24px;height:2px;background:var(--ink);transition:.3s}

/* Buttons */
.btn{display:inline-block;padding:.85rem 1.8rem;border-radius:50px;font-weight:600;font-size:.98rem;transition:.25s;cursor:pointer}
.btn-primary{background:var(--turquoise);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--turquoise-dark);transform:translateY(-2px)}
.btn-ghost{border:1.5px solid var(--border);color:var(--ink)}
.btn-ghost:hover{border-color:var(--turquoise);color:var(--turquoise)}

/* Hero */
#hero{padding:5rem 0 6rem;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:3rem;align-items:center}
.hero-text .lead{margin:1.5rem 0 2rem;max-width:560px}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap}
.hero-visual{position:relative;height:340px}
.orb{position:absolute;inset:0;margin:auto;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle at 30% 30%,var(--turquoise),var(--turquoise-dark));filter:blur(2px);opacity:.9;animation:float 6s ease-in-out infinite}
.grid-lines{position:absolute;inset:0;background-image:linear-gradient(var(--turquoise-light) 1px,transparent 1px),linear-gradient(90deg,var(--turquoise-light) 1px,transparent 1px);background-size:32px 32px;opacity:.6;mask:radial-gradient(circle at center,#000,transparent 70%)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)}}

/* Sections */
.section{padding:5.5rem 0}
.section-alt{background:var(--bg-alt)}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-top:3rem}
.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;transition:.3s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card-icon{width:54px;height:54px;display:flex;align-items:center;justify-content:center;font-size:1.6rem;background:var(--turquoise-light);border-radius:14px;margin-bottom:1.2rem}

/* Approche */
.approche-grid{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:start}
.steps{display:flex;flex-direction:column;gap:1.6rem}
.step{display:flex;gap:1.2rem;align-items:flex-start}
.step-num{font-family:'Poppins',sans-serif;font-weight:700;color:var(--turquoise);font-size:1.3rem;min-width:36px}

/* Secteurs */
.tags{display:flex;flex-wrap:wrap;gap:.8rem;justify-content:center;margin-top:1rem}
.tags span{background:var(--turquoise-light);color:var(--turquoise-dark);padding:.6rem 1.3rem;border-radius:50px;font-weight:500;font-size:.95rem}

/* About */
.about-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:3rem;align-items:center}
.photo-placeholder{width:100%;aspect-ratio:1;background:linear-gradient(135deg,var(--turquoise),var(--turquoise-dark));border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-family:'Poppins';font-weight:700;font-size:3.5rem;color:#fff}
.linkedin-link{display:inline-block;margin-top:1.5rem;color:var(--turquoise);font-weight:600}
.linkedin-link:hover{color:var(--turquoise-dark)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:start}
.contact-info{list-style:none;margin-top:1.8rem;display:flex;flex-direction:column;gap:.8rem}
.contact-info a{color:var(--turquoise);font-weight:500}
.contact-form{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:2.2rem;box-shadow:var(--shadow)}
.field{margin-bottom:1.2rem}
.field label{display:block;font-weight:500;font-size:.9rem;margin-bottom:.4rem}
.field input,.field textarea{width:100%;padding:.8rem 1rem;border:1.5px solid var(--border);border-radius:10px;font-family:inherit;font-size:.97rem;transition:border .2s;background:#fff}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--turquoise)}
.honeypot{position:absolute;left:-9999px}
.contact-form .btn{width:100%;border:none}
.form-msg{padding:1rem;border-radius:10px;margin-bottom:1rem;font-size:.95rem}
.form-msg.ok{background:var(--turquoise-light);color:var(--turquoise-dark)}
.form-msg.err{background:#fdecec;color:#c0392b}

/* Footer */
footer{background:var(--ink);color:#fff;padding:2.5rem 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem}
.footer-inner .logo{color:#fff}
.footer-inner p{color:#9fb3b8;font-size:.9rem}

/* Responsive */
@media(max-width:860px){
  .hero-grid,.approche-grid,.about-grid,.contact-grid{grid-template-columns:1fr}
  .hero-visual{height:240px;order:-1}
  .about-photo{max-width:260px}
  nav ul{position:fixed;top:64px;right:0;width:240px;height:calc(100vh - 64px);background:#fff;flex-direction:column;align-items:flex-start;padding:2rem;gap:1.5rem;transform:translateX(100%);transition:.3s;box-shadow:-10px 0 40px rgba(0,0,0,.08)}
  nav ul.open{transform:translateX(0)}
  .burger{display:flex}
}