/* Gros Œuvres GE — anthracite, orange armature, gris béton. Angles droits, trame de plan. */
:root{
  --coal:#16181B; --coal-2:#1D2024; --slab:#22262B; --edge:#353A41; --grid:#2A2E33;
  --concrete:#C9CCD1; --ash:#9BA1A8; --paper:#EEF0F2;
  --rebar:#F26B1D; --rebar-2:#FF8A45; --rebar-ink:#16181B;
  --display:'Big Shoulders Display','Arial Narrow',Impact,sans-serif;
  --body:'Figtree',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --frame:1180px;
  --tt-ink:#EEF0F2; --tt-bg:#22262B; --tt-accent:#F26B1D; --tt-accent-ink:#16181B; --tt-accent-text:#FF8A45; --tt-soft:#2c3137; --tt-line:#454B53; --tt-muted:#B8BDC3; --tt-radius:4px; --tt-font:var(--body); --tt-display:var(--display);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:84px}
body{margin:0;background:var(--coal);color:var(--paper);font:17px/1.65 var(--body);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:48px 48px;background-attachment:fixed}
img,svg{max-width:100%;display:block}
a{color:var(--rebar-2);text-underline-offset:3px}
a:hover{color:#fff}
:focus-visible{outline:3px solid var(--rebar);outline-offset:3px}
h1,h2,h3{font-family:var(--display);text-transform:uppercase;letter-spacing:.01em;line-height:1.02;margin:0 0 .5em;color:#fff;text-wrap:balance}
h1{font-size:clamp(44px,7vw,86px);font-weight:900}
h2{font-size:clamp(30px,3.6vw,44px);font-weight:800}
h3{font-size:24px;font-weight:800}
p{margin:0 0 1em}
.mono{font-family:var(--mono);font-size:13px;letter-spacing:.02em;color:var(--ash)}
.small{font-size:13px}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--rebar);color:var(--coal);padding:10px 14px;z-index:100;font-weight:700}
.skip:focus{left:12px}
.frame{width:min(var(--frame),100% - 40px);margin-inline:auto}

/* --- Barre --- */
.bar{position:sticky;top:0;z-index:40;background:rgba(22,24,27,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--edge)}
.bar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.logo{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none}
.logo svg{width:38px;height:38px;flex:none}
.logo span{font:900 25px/1 var(--display);text-transform:uppercase;letter-spacing:.02em;white-space:nowrap}
.logo b{color:var(--rebar);margin-left:.25em}
.logo:hover{color:#fff}
#menu{display:flex;align-items:center;gap:4px}
#menu a{color:var(--concrete);text-decoration:none;font-weight:600;font-size:15px;padding:8px 11px;border-bottom:2px solid transparent;white-space:nowrap}
#menu a:hover,#menu a[aria-current]{color:#fff;border-bottom-color:var(--rebar)}
#menu .nav-cta{background:var(--rebar);color:var(--rebar-ink);border:0;margin-left:8px;padding:10px 16px}
#menu .nav-cta:hover,#menu .nav-cta[aria-current]{background:var(--rebar-2);color:var(--rebar-ink)}
.burger{display:none;background:transparent;border:1px solid var(--edge);color:#fff;font:700 14px var(--body);padding:10px 14px;text-transform:uppercase;letter-spacing:.06em;cursor:pointer;min-height:44px}
@media (max-width:960px){
  .burger{display:block}
  #menu{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;background:var(--coal-2);border-bottom:1px solid var(--edge);padding:8px 20px 18px}
  #menu.open{display:flex}
  #menu a{padding:14px 4px;border-bottom:1px solid var(--edge);font-size:17px}
  #menu .nav-cta{margin:12px 0 0;text-align:center}
}
@media (max-width:380px){.logo span{font-size:21px}.logo svg{width:32px;height:32px}}

/* --- Boutons --- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:12px 22px;font:700 16px/1.2 var(--body);text-decoration:none;border:2px solid transparent;cursor:pointer;border-radius:0}
.btn-orange{background:var(--rebar);color:var(--rebar-ink)}
.btn-orange:hover{background:var(--rebar-2);color:var(--rebar-ink)}
.btn-line{background:transparent;color:#fff;border-color:var(--concrete)}
.btn-line:hover{border-color:var(--rebar);color:#fff}
.btn-block{width:100%}

/* --- Tags / têtes de page --- */
.tag{display:inline-block;font:600 12.5px/1.3 var(--mono);text-transform:uppercase;letter-spacing:.12em;color:var(--rebar-2);margin:0 0 14px;padding-left:18px;position:relative}
.tag::before{content:"";position:absolute;left:0;top:50%;width:10px;height:2px;background:var(--rebar)}
.lede{font-size:clamp(18px,1.6vw,20px);color:var(--concrete);max-width:62ch}
.head{border-bottom:1px solid var(--edge);padding:48px 0 40px;background:linear-gradient(180deg,rgba(29,32,36,.92),rgba(22,24,27,.85))}
.head h1{font-size:clamp(40px,6vw,72px)}
.head-tall{padding:100px 0}
.trail{font:13px/1.4 var(--mono);color:var(--ash);margin-bottom:22px}
.trail a{color:var(--concrete)}
.trail span{margin:0 6px;color:var(--edge)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* --- Accueil --- */
.hero{padding:56px 0 64px;border-bottom:1px solid var(--edge)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero h1 span{display:block;color:var(--rebar)}
.starter{margin-top:28px;background:var(--slab);border:1px solid var(--edge);border-left:4px solid var(--rebar);padding:18px}
.starter-row{display:grid;grid-template-columns:1.3fr 1fr auto;gap:10px}
.starter select{min-height:50px;background:var(--coal);color:#fff;border:1px solid var(--edge);padding:0 12px;font:16px var(--body);border-radius:0}
.starter p{margin:12px 0 0}
.blueprint{margin:0;background:var(--coal-2);border:1px solid var(--edge);padding:12px}
.blueprint figcaption{padding:10px 4px 2px}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.blueprint{order:2}}
@media (max-width:560px){.starter-row{grid-template-columns:1fr}}

.block{padding:72px 0}
.block-head{max-width:720px;margin-bottom:34px}
.block-head p:last-child{color:var(--concrete)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:1px;background:var(--edge);border:1px solid var(--edge)}
.card{position:relative;display:block;background:var(--coal-2);padding:26px 24px 56px;color:var(--paper);text-decoration:none;transition:background .15s}
.card h3{margin-top:10px}
.card p{color:var(--ash);margin:0}
.card .arrow{position:absolute;left:24px;bottom:20px;color:var(--rebar);font-size:22px;transition:transform .15s}
.card:hover{background:var(--slab);color:var(--paper)}
.card:hover .arrow{transform:translateX(6px)}
.stripe{background:var(--coal-2);border-block:1px solid var(--edge)}
.profiles{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.profiles>div{border-top:3px solid var(--rebar);padding-top:18px}
.profiles p{color:var(--concrete)}
.profiles a{font-weight:700}
@media (max-width:820px){.profiles{grid-template-columns:1fr}}
.two{display:grid;grid-template-columns:1fr 1fr;gap:56px}
@media (max-width:860px){.two{grid-template-columns:1fr;gap:28px}}
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-block:72px;padding:36px;background:var(--rebar);color:var(--rebar-ink)}
.cta-band h2{color:var(--rebar-ink);margin:0}
.cta-band .tag{color:var(--rebar-ink)}
.cta-band .tag::before{background:var(--rebar-ink)}
.cta-band .btn-orange{background:var(--coal);color:#fff}
.cta-band .btn-orange:hover{background:#000;color:#fff}

/* --- Tuiles lieux --- */
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;margin-bottom:24px}
.tiles-wide{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.tile{display:flex;flex-direction:column;gap:6px;padding:18px;background:var(--slab);border:1px solid var(--edge);color:#fff;text-decoration:none;border-left:3px solid var(--edge);transition:border-color .15s}
.tile strong{font:800 22px/1.05 var(--display);text-transform:uppercase}
.tile small{color:var(--ash);font-size:14px;line-height:1.5}
.tile:hover{border-left-color:var(--rebar);color:#fff}
.band-title{margin-top:48px}

/* --- Mise en page article --- */
.split{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:48px;padding-block:48px 72px}
@media (max-width:960px){.split{grid-template-columns:1fr}}
.rail{display:grid;gap:18px;align-content:start;position:sticky;top:92px}
@media (max-width:960px){.rail{position:static}}
.panel{background:var(--slab);border:1px solid var(--edge);padding:22px}
.panel h2{font-size:24px}
.panel p{color:var(--concrete);font-size:15.5px}
.panel-hot{border-top:4px solid var(--rebar)}
.links{list-style:none;padding:0;margin:0}
.links li{border-top:1px solid var(--edge)}
.links a{display:block;padding:10px 0;color:var(--concrete);text-decoration:none}
.links a:hover{color:#fff}
.toc ol{margin:0;padding-left:22px;color:var(--ash);font-size:15px}
.toc li{margin:6px 0}
.toc a{color:var(--concrete)}
.text{max-width:760px}
.text.narrow{padding-block:40px 72px}
.text h2{margin-top:1.6em;font-size:clamp(28px,3vw,38px)}
.text p,.text li{color:#dfe2e6}
.text strong{color:#fff}
.dash{list-style:none;padding:0;margin:0 0 1.2em}
.dash li{position:relative;padding:8px 0 8px 28px;border-bottom:1px dashed var(--edge)}
.dash li::before{content:"";position:absolute;left:0;top:20px;width:14px;height:2px;background:var(--rebar)}
.numbered{counter-reset:n;list-style:none;padding:0;margin:0 0 1.2em}
.numbered li{counter-increment:n;position:relative;padding:10px 0 10px 52px;border-bottom:1px solid var(--edge)}
.numbered li::before{content:counter(n,decimal-leading-zero);position:absolute;left:0;top:10px;font:700 14px var(--mono);color:var(--rebar);border:1px solid var(--rebar);padding:2px 6px}
.note{border:1px solid var(--rebar);background:rgba(242,107,29,.08);padding:18px 20px;margin:28px 0;color:#f3e3d8}
.note strong{display:block;font:800 20px/1.1 var(--display);text-transform:uppercase;color:var(--rebar-2);margin-bottom:6px}
.disclaimer{margin-top:32px;border-top:1px solid var(--edge);padding-top:14px}

/* Tableaux « fiche technique » */
.spec{width:100%;border-collapse:collapse;margin:8px 0 28px;font-size:15.5px;background:var(--slab)}
.spec th,.spec td{border:1px solid var(--edge);padding:11px 14px;text-align:left;vertical-align:top}
.spec th{font:600 12.5px/1.4 var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--ash);width:38%}
.spec-wide th{width:auto;background:var(--coal-2)}
.spec td{color:#e6e8eb}
@media (max-width:640px){
  .spec-wide,.spec-wide tbody,.spec-wide tr,.spec-wide td{display:block;width:100%}
  .spec-wide thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .spec-wide tr{border:1px solid var(--edge);margin-bottom:10px}
  .spec-wide td{border:0;border-bottom:1px solid var(--edge)}
  .spec-wide td:first-child{font-weight:700;color:#fff;background:var(--coal-2)}
}

/* FAQ */
.qa details{border:1px solid var(--edge);background:var(--slab);margin-bottom:8px}
.qa summary{cursor:pointer;list-style:none;padding:16px 48px 16px 18px;font-weight:700;position:relative;color:#fff}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";position:absolute;right:18px;top:12px;font:400 26px/1 var(--mono);color:var(--rebar)}
.qa details[open] summary::after{content:"−"}
.qa details p{padding:0 18px 16px;margin:0;color:var(--concrete)}

/* Chronologie */
.timeline{list-style:none;padding:0;margin:0 0 32px;border-left:2px solid var(--edge)}
.timeline li{display:grid;grid-template-columns:52px 1fr;gap:10px;padding:0 0 18px;position:relative}
.timeline li>.mono{margin-left:-1px;background:var(--rebar);color:var(--rebar-ink);font-weight:700;height:28px;display:grid;place-items:center;font-size:13px}
.timeline h2{margin-top:0;font-size:clamp(24px,2.6vw,30px)}

/* --- Fiche projet --- */
.sheet{display:grid;gap:18px}
.sheet-block{border:1px solid var(--edge);background:var(--slab);margin:0;padding:22px 22px 18px;min-width:0}
.sheet-block legend{display:flex;align-items:center;gap:12px;padding:0 8px;margin-left:-8px;font:800 23px/1.1 var(--display);text-transform:uppercase;color:#fff}
.sheet-block legend small{font:500 13px var(--body);text-transform:none;color:var(--ash)}
.sheet-code{display:grid;place-items:center;width:34px;height:34px;background:var(--rebar);color:var(--rebar-ink);font:900 20px var(--display)}
.seg{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.seg label{position:relative}
.seg input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.seg span{display:inline-flex;align-items:center;min-height:46px;padding:10px 18px;border:1px solid var(--edge);background:var(--coal);color:var(--concrete);font-weight:600;cursor:pointer}
.seg-sm span{min-height:42px;padding:8px 14px;font-size:15px}
.seg input:checked+span{background:var(--rebar);border-color:var(--rebar);color:var(--rebar-ink)}
.seg input:focus-visible+span{outline:3px solid var(--rebar-2);outline-offset:2px}
.ticks{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:8px;margin:6px 0 16px}
.ticks label{display:flex;align-items:center;gap:10px;padding:11px 12px;border:1px solid var(--edge);background:var(--coal);cursor:pointer;font-size:15.5px;color:var(--concrete)}
.ticks input{width:20px;height:20px;accent-color:var(--rebar);flex:none}
.ticks label:has(input:checked){border-color:var(--rebar);color:#fff}
.row2,.row3{display:grid;gap:14px;grid-template-columns:1fr 1fr}
.row3{grid-template-columns:1.4fr .7fr 1fr}
@media (max-width:640px){.row2,.row3{grid-template-columns:1fr}}
.fld{display:grid;gap:6px;margin-bottom:12px;min-width:0}
.fld label,.lbl{font-weight:600;font-size:15px;color:#fff}
.opt{font-weight:400;color:var(--ash);font-size:13px}
.fld input,.fld select,.fld textarea{width:100%;min-height:48px;padding:11px 12px;background:var(--coal);color:#fff;border:1px solid var(--edge);border-radius:0;font:16px var(--body)}
.fld textarea{resize:vertical;min-height:110px}
.fld input::placeholder,.fld textarea::placeholder{color:#7d838a}
.fld input:focus,.fld select:focus,.fld textarea:focus{border-color:var(--rebar);outline:none;box-shadow:0 0 0 2px rgba(242,107,29,.35)}
.agree{display:flex;gap:12px;align-items:flex-start;font-size:14px;line-height:1.5;color:var(--concrete);margin-top:4px}
.agree input{width:20px;height:20px;flex:none;margin-top:2px;accent-color:var(--rebar)}
.sheet-foot{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.sheet-foot p{margin:0}
.trap{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.warn{border:1px solid #e0573f;background:rgba(224,87,63,.1);padding:16px 20px;margin-bottom:18px;color:#ffd9d1}
.warn ul{margin:8px 0 0;padding-left:20px}
.done{border:1px solid var(--rebar);border-top:4px solid var(--rebar);background:var(--slab);padding:28px}
.steps-mini{margin:0;padding-left:20px;color:var(--concrete);font-size:15.5px}
.steps-mini li{margin:6px 0}

/* --- Pied --- */
.foot{border-top:1px solid var(--edge);background:#111316;padding-top:56px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.foot h2{font-size:19px;color:var(--ash);margin-bottom:12px}
.foot-grid a{display:block;color:var(--concrete);text-decoration:none;padding:5px 0;font-size:15px}
.foot-grid a:hover{color:#fff}
.foot-about p{color:var(--ash);font-size:15px}
.logo-foot{margin-bottom:16px}
.foot-base{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;border-top:1px solid var(--edge);margin-top:40px;padding:18px 0 28px;color:var(--ash);font-size:14px}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}.foot-about{grid-column:1/-1}}
@media (max-width:480px){.foot-grid{grid-template-columns:1fr}}
.mobile-cta{display:none}
@media (max-width:760px){
  .mobile-cta{display:flex;align-items:center;justify-content:center;position:fixed;z-index:30;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));min-height:52px;background:var(--rebar);color:var(--rebar-ink);font-weight:800;text-decoration:none;box-shadow:0 10px 30px rgba(0,0,0,.45)}
  .mobile-cta:hover{color:var(--rebar-ink)}
  body{padding-bottom:76px}
  body[data-no-rappel] .mobile-cta{display:none}
  .block{padding:52px 0}
  .head{padding:34px 0 30px}
  .cta-band{padding:26px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.bar,.foot,.mobile-cta,.rail{display:none}body{background:#fff;color:#000}}

/* Photos (Wikimedia Commons, crédits dans les mentions légales) */
.ph{margin:0;display:grid;gap:8px}
.ph img{display:block;width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;border:1px solid var(--edge);background:var(--slab);filter:saturate(.88) contrast(1.04)}
.ph figcaption{font-family:var(--mono);font-size:12px;color:var(--ash);letter-spacing:.02em}
.ph-lead{margin-bottom:28px}
.ph-lead img{aspect-ratio:16/9}
.photo-row{display:grid;grid-template-columns:1.7fr 1fr;gap:20px;align-items:end;padding-block:8px 48px}
.photo-row .ph-wide img{aspect-ratio:16/10}
.photo-row .ph:not(.ph-wide) img{aspect-ratio:4/5}
.credits{font-size:14px;color:var(--ash);padding-left:18px}
.credits li{margin-bottom:6px}
.credits a{color:var(--rebar-2)}
@media (max-width:760px){.photo-row{grid-template-columns:1fr}.photo-row .ph:not(.ph-wide) img{aspect-ratio:3/2}}