@font-face{font-family:"Archivo";src:url(fonts/archivo-latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Archivo";src:url(fonts/archivo-latin-800-normal.woff2) format("woff2");font-weight:800;font-display:swap}
@font-face{font-family:"Source Sans";src:url(fonts/source-sans-3-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Source Sans";src:url(fonts/source-sans-3-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Source Sans";src:url(fonts/source-sans-3-latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}

:root{
  /* Couleurs relevées sur le logo : orange chantier et gris anthracite */
  --orange:#d87830; --orange-dark:#b9611f; --ink:#23262a; --coal:#1b1e21; --paper:#f4f1ec; --sheet:#ebe6dd; --line:rgba(35,38,42,.16);
  --head:"Archivo","Arial Black",system-ui,sans-serif;
  --body:"Source Sans","Segoe UI",system-ui,sans-serif;
  --pad:clamp(20px,5vw,64px);
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17.5px/1.6 var(--body);-webkit-text-size-adjust:100%}
h1,h2,h3{font-family:var(--head);margin:0}
a{color:inherit}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
.todo{background:rgba(216,120,48,.22);border-bottom:1px dotted var(--orange-dark)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Bandeau de maquette */
.mock{background:var(--coal);color:#fff;padding:9px var(--pad);font-size:.85rem;line-height:1.45}
.mock p{margin:0}
.mock a{text-underline-offset:3px}

.top{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px var(--pad);max-width:var(--max);margin:0 auto}
.brand{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;text-decoration:none;font:800 1.5rem/1 var(--head);letter-spacing:.01em}
.brand b{color:var(--orange);font-weight:800}
.brand span{font:600 .72rem var(--body);letter-spacing:.14em;text-transform:uppercase;color:#5b6066}
.top-cta{white-space:nowrap;font:700 .95rem var(--body);text-decoration:none;min-height:44px;display:inline-flex;align-items:center;padding:0 16px;border:2px solid var(--ink)}
.top-cta:hover{background:var(--ink);color:var(--paper)}

/* Hero : planche d'architecte */
.hero{position:relative;overflow:hidden;display:grid;gap:12px;padding:clamp(20px,5vh,56px) var(--pad) clamp(36px,6vh,72px);max-width:var(--max);margin:0 auto}
.hero::before{content:"";position:absolute;inset:0 -50vw;z-index:-1;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:linear-gradient(#000 40%,transparent);mask-image:linear-gradient(#000 40%,transparent)}
.kicker{margin:0 0 14px;font:700 .8rem var(--body);letter-spacing:.16em;text-transform:uppercase;color:#5b6066}
h1{font-weight:800;font-size:clamp(3.1rem,13.5vw,8.2rem);line-height:.92;letter-spacing:-.025em}
h1 .l{display:block}
h1 .o{color:var(--orange)}
.hero-sub{margin:clamp(16px,3vh,28px) 0 clamp(22px,4vh,34px);font-size:1.15rem;max-width:26em}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:54px;padding:0 30px;background:var(--orange);color:var(--coal);font:700 1.02rem var(--body);letter-spacing:.02em;text-decoration:none;border:0;border-radius:0;cursor:pointer;box-shadow:5px 5px 0 var(--ink);transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translate(2px,2px);box-shadow:3px 3px 0 var(--ink)}
.btn:active{transform:translate(5px,5px);box-shadow:0 0 0 var(--ink)}

/* Élévation : le bâtiment se construit niveau par niveau */
.elev{margin:8px auto 0;width:min(86%,380px);color:var(--ink)}
.elev svg{display:block;width:100%;height:auto;overflow:visible}
.elev .lbl text{font:700 9px var(--body);letter-spacing:.12em}
.elev .lbl text[transform]{font-size:8px;letter-spacing:.3em;fill:var(--orange-dark)}
.elev .lv,.elev .dim{opacity:.55}
.elev .proj{fill:rgba(216,120,48,.2);stroke:var(--orange-dark)}
.elev .f4 path{stroke:var(--orange-dark)}
@keyframes up{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@keyframes draw{from{stroke-dasharray:340;stroke-dashoffset:340}to{stroke-dashoffset:0}}
.fl{animation:up .7s cubic-bezier(.2,.7,.2,1) both}
.f0{animation-delay:.35s}.f1{animation-delay:.6s}.f2{animation-delay:.85s}.f3{animation-delay:1.1s}.f4{animation-delay:1.45s}
.ground{stroke-dasharray:340;animation:draw .8s ease-out both}
@media (prefers-reduced-motion:reduce){.fl,.ground{animation:none}}
@media (min-width:860px){
  .hero{grid-template-columns:1.15fr .85fr;align-items:center;gap:clamp(24px,5vw,72px);min-height:min(78vh,720px)}
  .elev{width:100%;max-width:460px;margin:0 0 0 auto}
}

/* Phrase d'ouverture sur fond anthracite, repères de coin */
.statement{position:relative;background:var(--coal);color:var(--paper);padding:clamp(80px,14vh,170px) var(--pad)}
.statement::before,.statement::after{content:"";position:absolute;width:28px;height:28px;border:0 solid var(--orange)}
.statement::before{top:22px;left:22px;border-top-width:3px;border-left-width:3px}
.statement::after{bottom:22px;right:22px;border-bottom-width:3px;border-right-width:3px}
.s-kick{margin:0 auto 18px;max-width:calc(var(--max) - 2*var(--pad));font:700 .85rem var(--body);letter-spacing:.2em;text-transform:uppercase;color:var(--orange)}
.s-text{margin:0 auto;max-width:calc(var(--max) - 2*var(--pad));font:700 clamp(1.7rem,4.8vw,3.3rem)/1.22 var(--head);text-wrap:balance}

/* Niveaux : les cinq activités empilées comme les étages d'un immeuble */
.levels-sec{max-width:var(--max);margin:0 auto;padding:clamp(72px,12vh,130px) var(--pad) 0}
h2{font-weight:800;font-size:clamp(1.9rem,5.4vw,3.2rem);line-height:1.06;letter-spacing:-.015em;margin-bottom:clamp(24px,4vh,44px);max-width:16em}
.levels{list-style:none;margin:0;padding:0;border-top:3px solid var(--ink)}
.level{display:grid;grid-template-columns:64px 1fr;column-gap:16px;row-gap:4px;padding:22px 0;border-bottom:3px solid var(--ink);transition:background .2s,padding .2s}
.level .n{grid-row:span 2;align-self:start;margin-top:4px;font:800 .95rem var(--head);color:var(--orange-dark);border:2px solid var(--orange);padding:6px 0;text-align:center}
.level h3{font-size:clamp(1.35rem,3.8vw,1.9rem);letter-spacing:-.01em}
.level p{margin:0;max-width:34em;color:#3b4045}
.level:hover{background:var(--sheet);padding-left:12px}
.level.base{background:var(--ink);color:var(--paper);padding:34px 16px;margin-top:0}
.level.base p{color:#d8d4cc}
.level.base .n{background:var(--orange);color:var(--coal);border-color:var(--orange)}
.level.base:hover{padding-left:24px;background:#2d3136}
@media (min-width:860px){
  .level{grid-template-columns:90px 1.1fr 1.4fr;align-items:center;column-gap:28px;padding:28px 0}
  .level .n{grid-row:auto;align-self:center;margin-top:0;font-size:1.05rem}
  .level.base{padding:44px 24px}
}
.note{margin:14px 0 0;font-size:.9rem;color:#5b6066}

/* Projets : emplacements en planches de plan */
.projects{max-width:var(--max);margin:0 auto;padding:clamp(88px,14vh,160px) var(--pad) 0}
.plates{display:grid;gap:32px}
.plates figure{margin:0}
.plate{position:relative;display:flex;align-items:center;justify-content:center;text-align:center;aspect-ratio:16/10;padding:24px;border:2px solid var(--ink);background-color:var(--sheet);background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:32px 32px;font-weight:600;font-size:.92rem;color:#4a4f55}
.plate::before,.plate::after{content:"";position:absolute;background:var(--ink);opacity:.35}
.plate::before{left:50%;top:0;bottom:0;width:1px}
.plate::after{top:50%;left:0;right:0;height:1px}
.plate span{position:relative;z-index:1;background:var(--sheet);padding:6px 12px}
.plates figcaption{margin-top:10px;font-size:.92rem}
@media (min-width:860px){
  .plates{grid-template-columns:repeat(12,1fr);gap:32px 28px;align-items:start}
  .p1{grid-column:1/8}
  .p2{grid-column:8/13;margin-top:64px}
  .p3{grid-column:3/9}
  .p1 .plate{aspect-ratio:4/3}
  .p2 .plate{aspect-ratio:1/1}
}

/* Contact : cartouche de plan + formulaire */
.contact{max-width:var(--max);margin:0 auto;display:grid;gap:48px;padding:clamp(88px,14vh,160px) var(--pad) 0}
.cartouche{width:100%;max-width:520px;border-collapse:collapse;border:2px solid var(--ink)}
.cartouche th,.cartouche td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--ink)}
.cartouche tr:last-child th,.cartouche tr:last-child td{border-bottom:0}
.cartouche th{width:32%;background:var(--sheet);font:700 .78rem var(--body);letter-spacing:.12em;text-transform:uppercase;border-right:2px solid var(--ink)}
form{display:grid;gap:6px;max-width:540px}
form h3{font-size:1.6rem;margin-bottom:8px}
label{font:700 .85rem var(--body);letter-spacing:.08em;text-transform:uppercase;margin-top:14px;color:#3b4045}
input,textarea,select{font:inherit;padding:12px;border:2px solid var(--ink);border-radius:0;background:#fff;color:var(--ink);width:100%}
input:focus,textarea:focus,select:focus{outline:3px solid var(--orange);outline-offset:0}
textarea{resize:vertical}
.hp{position:absolute;left:-9999px}
form .btn{margin-top:22px;justify-self:start}
@media (min-width:860px){.contact{grid-template-columns:1fr 1fr;gap:80px}}

footer{margin-top:clamp(88px,14vh,160px);padding:30px var(--pad);background:var(--coal);color:#d3d0c9;font-size:.95rem}
footer p{margin:4px auto;max-width:calc(var(--max) - 2*var(--pad))}
footer b{color:var(--orange)}
footer a{margin-right:20px}

/* Pages légales */
.legal-page{background:#fff}
.legal{max-width:720px;margin:0 auto;padding:30px var(--pad) 70px}
.legal h1{font-size:2.4rem;line-height:1.05;letter-spacing:-.01em;margin:20px 0 14px}
.legal h2{font-size:1.4rem;margin:28px 0 8px;max-width:none}
.legal .draft{background:rgba(216,120,48,.18);border:2px solid var(--orange);padding:12px 14px}