:root{
  --navy:#001F4A;
  --navy-soft:#3B4E71;
  --gold:#B78B31;
  --gold-pale:#F0E5CE;
  --white:#FFFFFF;
  --sky:#F5F8FC;
  --sky-2:#E8EFF8;
  --ridge:#C9D8EC;
  --rule:#D7E0EC;
  --serif:"Source Serif 4",Georgia,serif;
  --sans:"Inter",system-ui,-apple-system,sans-serif;
  --head-h:74px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--white);
  color:var(--navy);
  font-family:var(--sans);
  font-size:18px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--serif);font-weight:700;letter-spacing:-.012em;margin:0}
.wrap{width:min(1100px,100% - 2.4rem);margin-inline:auto}
.band{padding:clamp(3.6rem,8vw,6rem) 0}
.band-sky{background:var(--sky)}

/* les ancres ne doivent pas passer sous l'en-tête collant */
[id]{scroll-margin-top:calc(var(--head-h) + 12px)}

.skip{
  position:absolute;left:-9999px;top:0;z-index:100;
  background:var(--navy);color:#fff;padding:.8rem 1.2rem;
}
.skip:focus{left:0}

/* ---------- header ---------- */
.head{
  position:sticky;top:0;z-index:40;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--rule);
}
.head-in{display:flex;align-items:center;gap:1.2rem;padding:.65rem 0;position:relative}
.brand{display:flex;align-items:center;gap:.75rem;text-decoration:none;margin-right:auto}
.brand img{height:44px;width:auto}
.brand-t{font-family:var(--serif);font-weight:700;font-size:1.3rem;line-height:1.05;display:block}
.brand-s{font-size:.7rem;letter-spacing:.2em;color:var(--gold);font-weight:600;display:block}
.nav{display:flex;gap:1.7rem;font-size:1rem;font-weight:500;align-items:center}
.nav a{text-decoration:none;color:var(--navy-soft);padding:.35rem 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a:focus-visible{color:var(--navy);border-bottom-color:var(--gold)}

/* ---------- bouton burger ---------- */
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:.6rem;cursor:pointer}
.burger span{display:block;width:26px;height:2px;background:var(--navy);transition:transform .25s,opacity .25s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media(max-width:900px){
  :root{--head-h:64px}
  .burger{display:flex}
  .brand img{height:36px}
  .brand-t{font-size:1.02rem;white-space:nowrap}
  .brand-s{font-size:.58rem;letter-spacing:.12em;white-space:nowrap}
  .head-cta{padding:.55rem .9rem;font-size:.88rem;border-width:1px}
  .cta-long{display:none}
  .nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;gap:0;align-items:stretch;
    background:#fff;border-bottom:1px solid var(--rule);
    padding:.4rem 1.2rem 1.4rem;
    box-shadow:0 12px 24px rgba(0,31,74,.08);
  }
  .nav.open{display:flex}
  .nav a{padding:.95rem 0;border-bottom:1px solid var(--rule);font-size:1.1rem;color:var(--navy)}
}

.btn{
  display:inline-block;text-decoration:none;font-weight:600;font-size:1rem;
  background:var(--navy);color:#fff;padding:.85rem 1.6rem;border:2px solid var(--navy);
  cursor:pointer;font-family:inherit;
}
.btn:hover,.btn:focus-visible{background:#0B3268;border-color:#0B3268}
.btn-ghost{background:#fff;color:var(--navy)}
.btn-ghost:hover,.btn-ghost:focus-visible{background:var(--sky-2);color:var(--navy);border-color:var(--navy)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(#FFFFFF 0%,var(--sky) 100%);text-align:center}
.hero-mts{position:absolute;left:0;right:0;bottom:0;width:100%;height:auto;pointer-events:none}
.hero-in{position:relative;z-index:2;padding:clamp(2.6rem,6vw,4.4rem) 0 clamp(9rem,20vw,13rem)}
.hero-logo{margin:0 auto clamp(1.6rem,4vw,2.4rem);width:min(420px,78%);height:auto}
.hero h1{font-size:clamp(2.3rem,6.6vw,4rem);line-height:1.06;margin:0 auto 1.2rem;max-width:16ch}
.hero p{font-size:clamp(1.05rem,2.2vw,1.3rem);color:var(--navy-soft);max-width:44ch;margin:0 auto 2.2rem}
.hero-cta{display:flex;flex-wrap:wrap;gap:.9rem;justify-content:center}

.strip{background:var(--navy);color:#fff}
.strip-in{display:flex;flex-wrap:wrap;justify-content:center;gap:.6rem 2rem;padding:1rem 0;
  font-size:.85rem;font-weight:600;letter-spacing:.18em}
.strip i{font-style:normal;color:var(--gold)}

/* ---------- titres ---------- */
.sec-h{font-size:clamp(1.9rem,4.6vw,2.9rem);line-height:1.12;margin-bottom:.9rem}
.sec-p{font-size:1.1rem;max-width:58ch;color:var(--navy-soft);margin:0 0 3rem}
.zone-p{margin-bottom:2rem}

/* ---------- métiers ---------- */
.jobs{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule)}
.job{background:#fff;padding:2rem 1.7rem}
.job h3{font-size:1.5rem;margin-bottom:.55rem}
.job .tag{display:block;width:2.4rem;height:3px;background:var(--gold);margin-bottom:1.1rem}
.job p{margin:0;color:var(--navy-soft);font-size:1.02rem}

/* ---------- étapes ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.6rem}
.step{border-top:3px solid var(--navy);padding-top:1.1rem}
.step .n{font-family:var(--serif);font-weight:700;font-size:2.2rem;color:var(--gold);line-height:1;display:block;margin-bottom:.4rem}
.step h3{font-size:1.2rem;margin-bottom:.35rem}
.step p{margin:0;color:var(--navy-soft);font-size:.98rem}

/* ---------- finitions ---------- */
.tbl-scroll{overflow-x:auto;border:1px solid var(--rule);background:#fff}
.tbl{width:100%;border-collapse:collapse;text-align:left;min-width:600px}
.tbl th,.tbl td{padding:1.2rem 1.3rem;border-bottom:1px solid var(--rule);vertical-align:top}
.tbl thead th{background:var(--navy);color:#fff;font-size:.82rem;letter-spacing:.14em;font-weight:600;border-bottom:none}
.tbl td:first-child{font-family:var(--serif);font-weight:700;font-size:1.2rem;white-space:nowrap;color:var(--navy)}
.tbl td{color:var(--navy-soft)}
.tbl tr:last-child td{border-bottom:none}

/* ---------- zone / éléphant ---------- */
.zone{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(2rem,5vw,4rem);align-items:center}
@media(max-width:860px){.zone{grid-template-columns:1fr}}
.communes{display:flex;flex-wrap:wrap;gap:.6rem;margin:0;padding:0}
.communes li{list-style:none;border:1px solid var(--rule);background:#fff;padding:.5rem 1rem;font-size:.98rem;font-weight:500}

/* ---------- devis ---------- */
.devis-in{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:clamp(2rem,5vw,4rem);align-items:start}
@media(max-width:860px){.devis-in{grid-template-columns:1fr}}
.contact{list-style:none;margin:0 0 1.6rem;padding:0;background:#fff;border:1px solid var(--rule)}
.contact li{padding:1.15rem 1.4rem;border-bottom:1px solid var(--rule);display:flex;flex-wrap:wrap;gap:.3rem 1.2rem;align-items:baseline}
.contact li:last-child{border-bottom:none}
.contact .k{font-size:.78rem;letter-spacing:.14em;color:var(--gold);width:6.5rem;flex:none;font-weight:700}
.contact a{font-weight:600;font-size:1.1rem;text-decoration-color:var(--gold);text-underline-offset:4px}
.pledge{background:var(--gold-pale);border-left:4px solid var(--gold);padding:1.8rem}
.pledge h3{font-size:1.45rem;margin-bottom:.6rem}
.pledge p{margin:0;color:var(--navy-soft)}

/* ---------- formulaire ---------- */
.form{display:flex;flex-direction:column;gap:1.1rem}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
@media(max-width:560px){.f-row{grid-template-columns:1fr}}
.f{display:flex;flex-direction:column;gap:.35rem}
.f label{font-size:.85rem;font-weight:600;letter-spacing:.04em;color:var(--navy-soft)}
.f input,.f select,.f textarea{
  font-family:inherit;font-size:1rem;color:var(--navy);
  padding:.8rem .9rem;border:1px solid var(--rule);background:#fff;border-radius:0;
  width:100%;
}
.f textarea{resize:vertical;min-height:7rem}
.f input:focus,.f select:focus,.f textarea:focus{outline:2px solid var(--gold);outline-offset:1px;border-color:var(--gold)}
.f-note{font-size:.85rem;color:var(--navy-soft);margin:.2rem 0 0}
.hp{position:absolute;left:-9999px}

/* ---------- footer ---------- */
.foot{background:var(--navy);color:rgba(255,255,255,.78);font-size:.95rem}
.foot-in{display:grid;grid-template-columns:auto 1fr auto;gap:1.6rem 2.5rem;padding:2.6rem 0;align-items:center}
@media(max-width:760px){.foot-in{grid-template-columns:1fr;text-align:left}}
.foot img{height:70px;width:auto}
.foot a{color:#fff;text-decoration-color:var(--gold);text-underline-offset:3px}
.legal{border-top:1px solid rgba(255,255,255,.18);padding:1.15rem 0;font-size:.85rem;color:rgba(255,255,255,.6)}

/* ---------- page merci ---------- */
.merci{min-height:70vh;display:flex;align-items:center;text-align:center}
.merci h1{font-size:clamp(2rem,5vw,3rem);margin-bottom:1rem}
.merci p{color:var(--navy-soft);max-width:48ch;margin:0 auto 2rem}

:focus-visible{outline:3px solid var(--gold);outline-offset:3px}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}