/* ALZO GROUP — charte reprise de la plaquette */
:root{
  --navy:#00264D;--navy2:#0B355F;--steel:#7B7F85;--graphite:#4A4F56;--ink:#16191D;
  --mist:#EEF1F5;--line:#D9DEE5;--sky:#A9BCD0;--paper:#fff;
  --r:6px;--max:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;overflow-x:hidden}
body{overflow-x:hidden}
body{font-family:Inter,Arial,sans-serif;color:var(--ink);background:var(--paper);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,.kick,.btn,.wm{font-family:Jost,Arial,sans-serif}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.sec{padding:56px 24px}
.kick{font-size:13px;font-weight:500;letter-spacing:.28em;text-transform:uppercase;color:var(--steel);display:flex;align-items:center;gap:12px;margin-bottom:14px}
.kick:before{content:"";width:32px;height:2px;background:var(--navy)}
.kick.c{justify-content:center}
h1{text-wrap:balance;font-size:clamp(32px,4.6vw,56px);line-height:1.04;font-weight:600;color:var(--navy);letter-spacing:-.02em}
h2{font-size:clamp(28px,3.4vw,42px);line-height:1.1;font-weight:600;color:var(--navy);letter-spacing:-.015em}
h1 em,h2 em{display:block;font-style:normal;font-weight:300;color:var(--steel)}
.lead{font-size:18px;color:var(--graphite);max-width:680px;margin-top:16px}
.muted{color:#B9C4D0;font-size:15px;margin-top:14px}

/* boutons */
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--navy);color:#fff;font-weight:500;font-size:15px;letter-spacing:.08em;text-transform:uppercase;padding:15px 26px;border-radius:40px;border:2px solid var(--navy);transition:.2s;cursor:pointer}
.btn:hover{background:var(--navy2)}
.btn.ghost{background:transparent;color:var(--navy)}
.btn.ghost:hover{background:var(--mist)}
.btn.light{background:#fff;color:var(--navy);border-color:#fff}
.btn.ghostl{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}

/* en-tête */
.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:12px;color:var(--navy)}
.brand svg{width:44px;height:33px}
.wm{display:flex;flex-direction:column;line-height:1}
.wm b{font-weight:500;letter-spacing:.15em;font-size:22px}
.wm i{font-style:normal;font-size:9px;letter-spacing:.6em;color:var(--steel);margin-top:4px}
.brand.light{color:#fff;--hole:var(--navy)}
.brand.light .wm i{color:#B9C4D0}
.menu{display:flex;align-items:center;gap:30px;font-size:15px;font-weight:500}
.menu a{color:var(--graphite);padding:6px 0;border-bottom:2px solid transparent}
.menu a:hover,.menu a.on{color:var(--navy);border-color:var(--navy)}
.menu a.cta{background:var(--navy);color:#fff;padding:10px 18px;border-radius:30px;border:none}
.menu a.cta:hover{background:var(--navy2);color:#fff}
a:focus-visible,button:focus-visible{outline:3px solid var(--sky);outline-offset:2px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.burger{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer}
.burger span{display:block;height:2px;background:var(--navy);margin:6px 10px;transition:.2s}

/* accueil */
.hero{background:var(--navy);color:#fff;overflow:hidden}
.hgrid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;padding-top:40px;padding-bottom:40px}
.hero h1{color:#fff}.hero h1 em{color:var(--sky)}
.hero .kick{color:var(--sky)}.hero .kick:before{background:#fff}
.hero .lead{color:#D6DEE7}
.hero .btn{background:#fff;color:var(--navy);border-color:#fff}
.hero .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.mosaic{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:190px 190px;gap:10px}
.mosaic a{border-radius:var(--r);overflow:hidden}
.mosaic img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.mosaic a:hover img{transform:scale(1.04)}
.mosaic .m0{grid-row:span 2}
.hero.photo{position:relative;isolation:isolate}
.hero.photo .hbg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:right center;z-index:-2}
.hero.photo:before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(0,38,77,.96) 0%,rgba(0,38,77,.86) 38%,rgba(0,38,77,.2) 70%,rgba(0,38,77,0) 100%)}
.hero.photo .hgrid{grid-template-columns:1fr;min-height:520px}
.hero.photo .htx{max-width:560px}
.hero.photo .mosaic{display:none}
.hcap{position:absolute;right:24px;bottom:20px;background:rgba(0,26,54,.78);color:#fff;font-size:13.5px;padding:8px 14px;border-radius:30px;backdrop-filter:blur(4px)}
a.hcap:hover{background:var(--navy)}
.band{padding:28px 0;border-bottom:1px solid var(--line)}
.logos{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:18px 8px}
.logos .lg{width:150px;height:72px;display:flex;align-items:center;justify-content:center}
.logos img{max-width:130px;max-height:52px;object-fit:contain}
.facts{display:grid;grid-template-columns:repeat(4,1fr);background:var(--navy);color:#fff;border-radius:var(--r)}
.facts div{padding:28px 26px;border-left:1px solid rgba(255,255,255,.15)}
.facts div:first-child{border:0}
.facts b{display:block;font-family:Jost;font-weight:500;font-size:38px;line-height:1}
.facts span{display:block;color:#C9D3DE;font-size:15px;margin-top:8px}
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:28px}
.why div{border:1px solid var(--line);border-radius:var(--r);padding:28px 24px}
.why span{font-family:Jost;font-weight:600;color:var(--sky);letter-spacing:.2em;font-size:14px}
.why h3{font-size:21px;color:var(--navy);margin:10px 0 8px;line-height:1.2}
.why p{color:var(--graphite);font-size:16px}
.shead{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.more{font-family:Jost;font-weight:500;color:var(--navy);border-bottom:2px solid var(--navy);padding-bottom:3px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split .btn{margin-top:26px}
.lotlist{list-style:none;columns:2;column-gap:26px}
.lotlist li{break-inside:avoid;padding:13px 0;border-bottom:1px solid var(--line);font-family:Jost;font-weight:500;color:var(--navy);font-size:18px}

/* cartes réalisations */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{border-radius:var(--r);overflow:hidden;background:#fff;border:1px solid var(--line);transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(0,38,77,.12)}
.card .ph{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--mist)}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .ph img{transform:scale(1.05)}
.pill{position:absolute;top:14px;left:14px;background:#fff;color:var(--navy);font-family:Jost;font-weight:600;font-size:12px;letter-spacing:.16em;text-transform:uppercase;padding:6px 11px;border-radius:4px}
.card .tx{padding:20px 22px 22px}
.card h3{font-size:21px;color:var(--navy);line-height:1.2}
.card p{color:var(--graphite);font-size:15.5px;margin-top:4px}
.card small{display:block;color:var(--steel);font-size:13.5px;margin-top:12px}
.card.hide{display:none}
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.filters button{font-family:Jost;font-size:15px;font-weight:500;color:var(--navy);background:#fff;border:1.5px solid var(--navy);border-radius:30px;padding:9px 18px;cursor:pointer}
.filters button i{font-style:normal;color:var(--steel);margin-left:4px}
.filters button.on{background:var(--navy);color:#fff}.filters button.on i{color:var(--sky)}

/* en-tête de page */
.phead{background:var(--mist);padding:48px 0 40px}

/* page chantier */
.chead{position:relative;color:#fff;padding:36px 0 44px;background:linear-gradient(180deg,rgba(0,20,45,.25),rgba(0,20,45,.88)),var(--bg) center/cover}
.chead h1{color:#fff}.chead h1 em{color:#D6DEE7}
.chead .kick{color:#D6DEE7}.chead .kick:before{background:#fff}
.back{display:inline-block;color:#fff;opacity:.85;font-size:15px;margin-bottom:28px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.chip{font-family:Jost;font-weight:600;font-size:13px;letter-spacing:.06em;background:var(--mist);color:var(--navy);padding:6px 12px;border-radius:4px}
.chead .chip{background:rgba(255,255,255,.16);color:#fff}
.chip.t{background:var(--navy);color:#fff}
.brief{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;padding-bottom:40px;border-bottom:1px solid var(--line)}
.brief h4{font-size:13px;letter-spacing:.24em;text-transform:uppercase;color:var(--steel);font-weight:500;margin-bottom:8px}
.brief p{color:var(--graphite)}
.tabs{position:sticky;top:76px;z-index:20;background:#fff;display:flex;gap:6px;padding:16px 0;margin-bottom:12px;overflow-x:auto}
.tabs a{font-family:Jost;font-weight:500;color:var(--navy);border:1.5px solid var(--line);border-radius:30px;padding:8px 16px;white-space:nowrap}
.tabs a i{font-style:normal;color:var(--steel)}
.tabs a:hover{border-color:var(--navy)}
.stage{padding-top:28px;scroll-margin-top:150px}
.stage h2{display:flex;align-items:center;gap:14px;font-size:24px;margin-bottom:18px}
.stage h2 small{font-family:Inter;font-weight:400;font-size:15px;color:var(--steel)}
.tag{font-family:Jost;font-size:13px;letter-spacing:.2em;text-transform:uppercase;color:#fff;padding:7px 13px;border-radius:4px;background:var(--navy)}
.tag.avant{background:#3A3F46}.tag.pendant{background:var(--steel)}
.gallery{columns:3 280px;column-gap:12px}
.gallery a{display:block;margin-bottom:12px;break-inside:avoid;border-radius:var(--r);overflow:hidden;cursor:zoom-in;background:var(--mist)}
.gallery img{width:100%;height:auto;transition:transform .4s}
.gallery a:hover img{transform:scale(1.03)}
.pn{display:flex;justify-content:space-between;gap:16px;margin-top:48px;padding-top:24px;border-top:1px solid var(--line);font-family:Jost;font-weight:500;color:var(--navy)}

/* expertises */
.offers{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.offer{background:var(--mist);border-radius:var(--r);padding:32px}
.offer.dark{background:var(--navy);color:#fff}
.offer h3{font-size:24px;color:var(--navy)}.offer.dark h3{color:#fff}
.offer p{margin-top:10px;color:var(--graphite)}.offer.dark p{color:#D6DEE7}
.lots{display:grid;grid-template-columns:repeat(3,1fr);gap:0 32px;margin-top:40px}
.lot{border-top:1px solid var(--line);padding:22px 0}
.lot span{font-family:Jost;color:var(--steel);font-size:14px;letter-spacing:.15em}
.lot h3{font-size:20px;color:var(--navy);margin:4px 0}
.lot p{color:var(--graphite);font-size:16px}
.steps{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:20px;counter-reset:s}
.steps li{counter-increment:s;border-top:3px solid var(--navy);padding-top:18px}
.steps li:before{content:counter(s,decimal-leading-zero);font-family:Jost;color:var(--sky);font-weight:600;letter-spacing:.15em;font-size:14px}
.steps b{display:block;font-family:Jost;font-size:21px;color:var(--navy);margin:6px 0}
.steps span{color:var(--graphite);font-size:16px}

/* références */
.zone{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.zone span{font-family:Jost;font-weight:500;font-size:14px;color:var(--navy);border:1.5px solid var(--navy);border-radius:30px;padding:6px 14px}
.zone span.on{background:var(--navy);color:#fff}
.refs{border-top:2px solid var(--navy)}
.ref{display:grid;grid-template-columns:200px 1fr auto;gap:24px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line)}
.rl{height:70px;display:flex;align-items:center;justify-content:center}
.rl img{max-width:160px;max-height:66px;object-fit:contain}
.ph2{font-family:Jost;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--steel)}
.rn h3{font-size:22px;color:var(--navy)}.rn p{color:var(--steel);font-size:15px}
.rc{display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end}

/* contact */
.cgrid{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px}
.coords{display:flex;flex-direction:column;gap:6px}
.coords a,.coords div{border-bottom:1px solid var(--line);padding:16px 0}
.coords small{display:block;font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--steel)}
.coords b{font-family:Jost;font-weight:500;font-size:22px;color:var(--navy)}
.form{display:flex;flex-direction:column;gap:16px;background:var(--mist);padding:32px;border-radius:var(--r)}
.form .row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:500;color:var(--graphite)}
.form input,.form select,.form textarea{font:inherit;font-size:16px;padding:13px 14px;border:1.5px solid var(--line);border-radius:6px;background:#fff;color:var(--ink)}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--navy)}
.form .ok{flex-direction:row;align-items:flex-start;gap:10px;font-weight:400;font-size:14px}
.form .ok a{text-decoration:underline}
.form .btn{align-self:flex-start}

/* bandeau CTA + pied */
.ctab{background:var(--navy);color:#fff;padding:64px 0}
.ctab .wrap{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.ctab h2{color:#fff}.ctab h2 em{color:var(--sky)}
.ctab .kick{color:var(--sky)}.ctab .kick:before{background:#fff}
.ctab .btns{margin-top:0}
.foot{background:#001A36;color:#fff;padding:64px 0 28px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.foot h4{font-size:13px;letter-spacing:.24em;text-transform:uppercase;color:var(--sky);font-weight:500;margin-bottom:12px}
.foot p{color:#D6DEE7;font-size:15.5px;line-height:1.9}
.foot a:hover{color:#fff;text-decoration:underline}
.legal{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding-top:22px;color:#8FA2B8;font-size:14px}
.prose{max-width:820px}
.prose h2{font-size:24px;margin:32px 0 10px}
.prose p{color:var(--graphite);margin-bottom:10px}
.prose a{text-decoration:underline}

/* visionneuse */
.lb{position:fixed;inset:0;z-index:100;background:rgba(5,12,22,.94);display:flex;align-items:center;justify-content:center}
.lb[hidden]{display:none}
.lb figure{max-width:92vw;max-height:88vh;display:flex;flex-direction:column;align-items:center}
.lb img{max-width:92vw;max-height:80vh;object-fit:contain;border-radius:4px}
.lb figcaption{color:#D6DEE7;margin-top:12px;font-size:15px}
.lb button{position:absolute;background:rgba(255,255,255,.1);color:#fff;border:0;font-size:38px;width:56px;height:56px;border-radius:50%;cursor:pointer;line-height:1}
.lb button:hover{background:rgba(255,255,255,.22)}
.lb-x{top:18px;right:18px}.lb-p{left:18px}.lb-n{right:18px}

/* responsive */
@media (max-width:1000px){
  .hgrid,.split,.cgrid{grid-template-columns:1fr}
  .mosaic{grid-template-rows:180px 180px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .why,.facts{grid-template-columns:repeat(2,1fr)}
  .facts div:nth-child(3){border-left:0}
  .lots{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .fgrid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  body{font-size:16px}
  .sec{padding:52px 16px}.wrap{padding:0 16px}
  .burger{display:block}
  .menu{position:fixed;top:76px;left:0;width:100vw;height:calc(100vh - 76px);background:#fff;flex-direction:column;align-items:flex-start;gap:0;padding:12px 16px;transform:translateX(100%);visibility:hidden;transition:transform .25s,visibility .25s;overflow-y:auto}
  .menu a{width:100%;padding:16px 0;border-bottom:1px solid var(--line);font-size:19px}
  .menu a.cta{margin-top:16px;text-align:center;justify-content:center;width:100%}
  .top.open .menu{transform:none;visibility:visible}
  .top.open .burger span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  .top.open .burger span:nth-child(2){opacity:0}
  .top.open .burger span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
  .cards,.why,.lots,.brief,.offers,.form .row2,.fgrid{grid-template-columns:1fr}
  .lotlist{columns:1}
  .facts b{font-size:30px}
  .ref{grid-template-columns:1fr;gap:10px}.rl{justify-content:flex-start}.rc{justify-content:flex-start}
  .tabs{top:76px}
  .gallery{columns:2 140px;column-gap:8px}.gallery a{margin-bottom:8px}
  .lb button{width:44px;height:44px;font-size:30px}
  .phead{padding:32px 0 28px}
  .chead{padding:24px 0 32px}
  .hgrid{padding-top:28px;padding-bottom:28px;gap:24px}
  .mosaic{grid-template-rows:130px 130px}
  .hero.photo .hbg{position:static;display:block;height:230px;object-position:58% center}
  .hero.photo:before{display:none}
  .hcap{top:188px;bottom:auto;left:12px;right:auto;max-width:calc(100% - 24px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px;padding:6px 11px}
  .hero.photo .hgrid{min-height:0;padding-top:24px}
  .back{margin-bottom:16px}
}