/* Helysia — feuille de style commune */
:root{
  --navy-900:#0B2239; --navy-800:#0E2A47; --navy-700:#143a63; --navy-600:#1c4f82;
  --teal-500:#00a9c1; --teal-600:#0089a0; --teal-050:#e0f5f9;
  --ink:#16283a; --muted:#5b6b7b; --bg:#ffffff; --soft:#f3f8fb; --line:#e3edf4;
  --radius:16px; --maxw:1160px; --shadow:0 18px 44px -20px rgba(11,34,57,.28);
  --font:"Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:96px 0}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;color:var(--navy-900)}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem);font-weight:700}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-600)}
.lead{color:var(--muted);font-size:1.08rem;max-width:60ch}
.center{text-align:center;margin:0 auto}
.center .lead{margin-left:auto;margin-right:auto}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.55rem;font-weight:600;font-size:.98rem;padding:.85rem 1.5rem;border-radius:999px;border:1.5px solid transparent;cursor:pointer;transition:.2s ease;white-space:nowrap}
.btn-primary{background:var(--teal-500);color:#fff;box-shadow:0 10px 24px -10px rgba(0,169,193,.7)}
.btn-primary:hover{background:var(--teal-600);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-dark{background:var(--navy-800);color:#fff}
.btn-dark:hover{background:var(--navy-900);transform:translateY(-2px)}

/* Header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.28rem;color:var(--navy-900);letter-spacing:-.02em}
.brand .mark{width:34px;height:34px;flex:0 0 34px}
  .logo{height:42px;width:auto;display:block}
.brand b{color:var(--teal-600)}
.menu{display:flex;align-items:center;gap:2rem}
.menu a{font-size:.95rem;font-weight:500;color:var(--navy-800);transition:color .2s}
.menu a:hover,.menu a.active{color:var(--teal-600)}
.nav-cta{display:flex;align-items:center;gap:1rem}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px}
.burger span{display:block;width:24px;height:2px;background:var(--navy-800);margin:5px 0;transition:.3s}

/* Hero (accueil) */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--navy-900) 0%,var(--navy-800) 45%,var(--navy-700) 100%);color:#fff;padding:110px 0 120px}
.hero::before{content:"";position:absolute;top:-30%;right:-10%;width:620px;height:620px;background:radial-gradient(circle,rgba(0,169,193,.32),transparent 62%)}
.hero::after{content:"";position:absolute;bottom:-40%;left:-8%;width:520px;height:520px;background:radial-gradient(circle,rgba(28,79,130,.5),transparent 60%)}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero .eyebrow{color:#7fe3f0}
.hero h1{color:#fff;font-size:clamp(2rem,4.2vw,3.2rem);font-weight:800;margin:.7rem 0 1.1rem}
.hero p.sub{color:#cfe0ee;font-size:1.14rem;max-width:52ch;margin-bottom:2rem}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap}
.hero-points{display:flex;gap:1.6rem;flex-wrap:wrap;margin-top:2.4rem;padding-top:1.8rem;border-top:1px solid rgba(255,255,255,.14)}
.hero-points div{display:flex;align-items:center;gap:.55rem;font-size:.92rem;color:#dbeaf5}
.hero-points svg{flex:0 0 20px}
.hero-img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:16px;display:block}
.hero-card{position:relative;background:linear-gradient(160deg,rgba(255,255,255,.12),rgba(255,255,255,.04));border:1px solid rgba(255,255,255,.16);border-radius:24px;padding:30px}
.hero-card .glass{aspect-ratio:4/5;border-radius:16px;background:linear-gradient(160deg,#eaf5ff 0%,#cfe6f2 100%);position:relative;overflow:hidden}
.hero-card .shine{position:absolute;inset:0;background:linear-gradient(115deg,transparent 40%,rgba(255,255,255,.75) 50%,transparent 60%)}
.hero-card .floor{position:absolute;left:0;right:0;bottom:0;height:38%;background:linear-gradient(180deg,rgba(255,255,255,.9),#f6fbff)}
.hero-card .strip{position:absolute;bottom:0;left:18%;width:26%;height:38%;background:linear-gradient(180deg,#7fd0a2,#41b783);transform:skewX(-14deg);opacity:.9}
.hero-badge{position:absolute;bottom:16px;left:16px;right:16px;background:#fff;color:var(--navy-900);border-radius:12px;padding:14px 16px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow)}
.hero-badge .dot{width:38px;height:38px;flex:0 0 38px;border-radius:10px;background:var(--teal-050);display:grid;place-items:center}
.hero-badge small{display:block;color:var(--muted);font-size:.76rem}
.hero-badge strong{font-size:.98rem}

/* Page hero (pages internes) */
.page-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--navy-900),var(--navy-700));color:#fff;padding:80px 0 72px;text-align:center}
.page-hero::before{content:"";position:absolute;top:-40%;right:-6%;width:460px;height:460px;background:radial-gradient(circle,rgba(0,169,193,.28),transparent 62%)}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{color:#fff;font-size:clamp(1.9rem,4vw,2.9rem);font-weight:800;margin-bottom:.8rem}
.page-hero p{color:#cfe0ee;font-size:1.1rem;max-width:60ch;margin:0 auto}
.about-photo{margin-top:-44px;position:relative;z-index:3;margin-bottom:8px}
.about-photo img{width:100%;border-radius:20px;box-shadow:var(--shadow);display:block}
.crumbs{font-size:.85rem;color:#7fe3f0;margin-bottom:1rem;letter-spacing:.02em}
.crumbs a{color:#7fe3f0}

/* Reassurance strip */
.strip-re{background:var(--soft);border-bottom:1px solid var(--line)}
.re-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 0}
.re-grid .item{display:flex;align-items:center;gap:.8rem;font-weight:600;color:var(--navy-800);font-size:.98rem}
.re-grid .ico{width:42px;height:42px;flex:0 0 42px;border-radius:11px;background:var(--teal-050);display:grid;place-items:center}

/* About */
.about{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about .panel{background:linear-gradient(160deg,var(--navy-900),var(--navy-700));border-radius:20px;padding:40px;color:#fff;box-shadow:var(--shadow)}
.about .panel ul{list-style:none;margin-top:18px}
.about .panel li{display:flex;gap:.7rem;align-items:flex-start;padding:11px 0;border-top:1px solid rgba(255,255,255,.12);color:#d7e6f2;font-size:.98rem}
.about .panel li:first-child{border-top:0}
.about .panel svg{flex:0 0 20px;margin-top:3px}

/* Services / cards */
.services{background:var(--soft)}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:48px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;transition:.25s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.card .ic{width:56px;height:56px;border-radius:14px;background:var(--teal-050);display:grid;place-items:center;margin-bottom:18px}
.card h3{font-size:1.22rem;margin-bottom:.5rem}
.card p{color:var(--muted);font-size:.98rem}
.card .more{display:inline-flex;align-items:center;gap:.4rem;margin-top:14px;color:var(--teal-600);font-weight:600;font-size:.92rem}

/* Service detail rows (page services) */
.srow{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;padding:44px 0;border-top:1px solid var(--line)}
.srow:first-of-type{border-top:0}
.srow .visual{aspect-ratio:16/11;border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.srow .visual img{width:100%;height:100%;object-fit:cover;display:block}
.srow:nth-child(even) .visual{order:-1}
.srow h3{font-size:1.4rem;margin-bottom:.5rem}
.srow .ideal{display:inline-block;background:var(--teal-050);color:var(--teal-600);font-weight:600;font-size:.82rem;padding:.3rem .8rem;border-radius:999px;margin:.6rem 0}
.srow ul{list-style:none;margin:.6rem 0 1.2rem}
.srow li{display:flex;gap:.6rem;align-items:flex-start;padding:5px 0;color:var(--muted)}

/* Why / features */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:48px}
.feat{display:flex;gap:1rem;align-items:flex-start;padding:22px;border-radius:14px;background:#fff;border:1px solid var(--line)}
.feat .ic{width:44px;height:44px;flex:0 0 44px;border-radius:11px;background:var(--navy-900);display:grid;place-items:center}
.feat h3{font-size:1.05rem;margin-bottom:.25rem}
.feat p{color:var(--muted);font-size:.92rem;line-height:1.55}

/* Values (à propos) */
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
.value{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px}
.value .n{font-size:1.4rem;font-weight:800;color:var(--teal-500);margin-bottom:.4rem}
.value h3{font-size:1.15rem;margin-bottom:.4rem}
.value p{color:var(--muted);font-size:.95rem}

/* Timeline (à propos) */
.tl{margin-top:40px;border-left:2px solid var(--line);padding-left:28px}
.tl .step{position:relative;padding:0 0 26px}
.tl .step::before{content:"";position:absolute;left:-35px;top:3px;width:14px;height:14px;border-radius:50%;background:var(--teal-500);box-shadow:0 0 0 4px var(--teal-050)}
.tl .step b{color:var(--navy-900)}
.tl .step p{color:var(--muted);font-size:.96rem}

/* Sectors */
.sectors{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px;justify-content:center}
.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:.6rem 1.15rem;font-weight:600;font-size:.94rem;color:var(--navy-800);display:flex;align-items:center;gap:.5rem}
.chip span{width:8px;height:8px;border-radius:50%;background:var(--teal-500)}

/* Band CTA */
.band{background:linear-gradient(120deg,var(--navy-900),var(--navy-700));color:#fff;border-radius:24px;padding:56px;display:flex;align-items:center;justify-content:space-between;gap:32px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.band::after{content:"";position:absolute;top:-40%;right:-6%;width:380px;height:380px;background:radial-gradient(circle,rgba(0,169,193,.3),transparent 62%)}
.band h2{color:#fff;position:relative;z-index:2}
.band p{color:#cfe0ee;margin-top:.5rem;position:relative;z-index:2;max-width:48ch}
.band .cta{position:relative;z-index:2}

/* FAQ */
.faq{max-width:820px;margin:44px auto 0}
.qa{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden}
.qa summary{list-style:none;cursor:pointer;padding:20px 24px;font-weight:600;color:var(--navy-900);display:flex;justify-content:space-between;align-items:center;gap:16px}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";font-size:1.4rem;color:var(--teal-500);font-weight:400;transition:.2s}
.qa[open] summary::after{transform:rotate(45deg)}
.qa .a{padding:0 24px 20px;color:var(--muted);font-size:.98rem}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;margin-top:8px}
.form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:36px;box-shadow:var(--shadow)}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{display:block;font-size:.85rem;font-weight:600;color:var(--navy-800);margin:14px 0 6px}
input,select,textarea{width:100%;padding:.8rem .95rem;border:1.5px solid var(--line);border-radius:10px;font-family:inherit;font-size:.96rem;color:var(--ink);background:var(--soft);transition:.2s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--teal-500);background:#fff;box-shadow:0 0 0 4px var(--teal-050)}
textarea{resize:vertical;min-height:120px}
.form .btn{width:100%;justify-content:center;margin-top:20px}
.info-block{display:flex;flex-direction:column;gap:22px}
.info-item{display:flex;gap:1rem;align-items:flex-start}
.info-item .ic{width:48px;height:48px;flex:0 0 48px;border-radius:12px;background:var(--teal-050);display:grid;place-items:center}
.info-item small{color:var(--muted);font-size:.82rem;display:block;margin-bottom:2px}
.info-item a,.info-item span{font-weight:600;color:var(--navy-900);font-size:1.02rem}
.map-note{margin-top:6px;border-radius:16px;border:1px solid var(--line);background:var(--soft);padding:22px;color:var(--muted);font-size:.92rem}

/* Footer */
footer{background:var(--navy-900);color:#c9d8e6;padding:64px 0 32px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
footer .brand{color:#fff}
footer h4{color:#fff;font-size:.98rem;margin-bottom:16px;letter-spacing:.02em}
footer ul{list-style:none}
footer li{margin-bottom:10px;font-size:.94rem}
footer a:hover{color:var(--teal-500)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:24px;font-size:.85rem;color:#8ea6bb;flex-wrap:wrap}
.foot-bottom .grp{display:inline-flex;align-items:center;gap:.5rem}
.tag{display:inline-block;background:rgba(0,169,193,.16);color:#7fe3f0;border:1px solid rgba(0,169,193,.3);border-radius:999px;padding:.25rem .7rem;font-size:.76rem;font-weight:600}

/* Reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

@media(max-width:900px){
  section{padding:70px 0}
  .menu{display:none}
  .burger{display:block}
  .hero .wrap{grid-template-columns:1fr;gap:40px}
  .hero-img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:16px;display:block}
.hero-card{max-width:360px}
  .about,.contact-grid,.srow{grid-template-columns:1fr;gap:28px}
  .srow:nth-child(even) .visual{order:0}
  .cards,.why-grid,.re-grid,.values{grid-template-columns:1fr}
  .re-grid{gap:16px}
  .band{flex-direction:column;text-align:center;padding:40px 28px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .menu.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;background:#fff;padding:20px 24px;gap:1rem;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
}

.form-ok{background:var(--teal-050);border:1px solid var(--teal-500);color:var(--navy-900);border-radius:14px;padding:30px;text-align:center;font-size:1.05rem;line-height:1.6}