/* EXCAVATEUR.COM — feuille de style unique
   Palette chantier : jaune machine, encre, béton. Aucune police externe (PageSpeed 100). */
:root{
  --ink:#17150f;
  --ink-2:#4a4a44;
  --bg:#f2f1ec;
  --white:#fff;
  --yellow:#f0a800;
  --yellow-dark:#c98c00;
  --line:#d8d5cc;
  --mono:ui-monospace,"SF Mono","Cascadia Mono","Roboto Mono",Menlo,monospace;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.6;font-size:1rem}
img,svg{max-width:100%;height:auto;display:block}
a{color:inherit}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}

/* Signature : bande de danger */
.hazard{height:8px;background:repeating-linear-gradient(-45deg,var(--yellow) 0 14px,var(--ink) 14px 28px)}

/* Typo */
h1,h2,h3{font-weight:900;letter-spacing:-.01em;line-height:1.12;text-wrap:balance}
h1{font-size:clamp(2rem,5.2vw,3.4rem);text-transform:uppercase}
h2{font-size:clamp(1.5rem,3.4vw,2.1rem);text-transform:uppercase}
h3{font-size:1.12rem}
p{max-width:68ch}
.eyebrow{font-family:var(--mono);font-size:.75rem;text-transform:uppercase;letter-spacing:.14em;color:var(--ink-2);display:block;margin-bottom:.6rem}
.eyebrow b{color:var(--yellow-dark)}
.lead{font-size:1.12rem;color:var(--ink-2);margin-top:1rem}

/* Header */
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:.5rem 1rem;z-index:100}
.skip:focus{left:0}
header{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;gap:1rem;min-height:64px}
.logo{font-weight:900;text-transform:uppercase;letter-spacing:.02em;text-decoration:none;font-size:1.15rem;display:flex;align-items:center;gap:.5rem}
.logo i{width:.9em;height:.9em;background:var(--yellow);display:inline-block;flex:none}
.nav ul{display:flex;gap:.25rem;list-style:none;margin-left:auto;align-items:center}
.nav ul a{text-decoration:none;font-size:.92rem;font-weight:600;padding:.5rem .7rem}
.nav ul a:hover{background:var(--bg)}
.lang{font-family:var(--mono);font-size:.75rem;display:flex;gap:.15rem;margin-left:.5rem}
.lang a{padding:.35rem .45rem;text-decoration:none;border:1px solid var(--line)}
.lang a[aria-current]{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn{display:inline-block;background:var(--yellow);color:var(--ink);font-weight:800;text-decoration:none;padding:.75rem 1.4rem;border:2px solid var(--ink);text-transform:uppercase;font-size:.9rem;letter-spacing:.03em}
.btn:hover{background:var(--ink);color:var(--yellow)}
.btn-ghost{background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
#menu-btn{display:none;margin-left:auto;background:none;border:2px solid var(--ink);font-family:var(--mono);font-size:.8rem;padding:.45rem .7rem;cursor:pointer;text-transform:uppercase}
@media (max-width:920px){
  #menu-btn{display:block}
  .nav ul{display:none;position:absolute;top:64px;left:0;right:0;background:var(--white);flex-direction:column;align-items:stretch;border-bottom:2px solid var(--ink);padding:.5rem 0}
  .nav ul.open{display:flex}
  .nav ul a{display:block;padding:.8rem 20px}
  .nav .btn{margin:.5rem 20px}
}

/* Hero */
.hero{background:var(--white);padding:4rem 0 3.5rem;border-bottom:1px solid var(--line)}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center}
.hero-cta{display:flex;gap:.8rem;margin-top:1.8rem;flex-wrap:wrap}
.hero-note{font-family:var(--mono);font-size:.78rem;color:var(--ink-2);margin-top:1.2rem}
@media (max-width:820px){.hero .wrap{grid-template-columns:1fr}.hero{padding:2.5rem 0}}

/* Sections */
section{padding:3.5rem 0}
.sect-head{margin-bottom:2rem}
.grid{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.g3,.g4,.g2{grid-template-columns:1fr}}
.card{background:var(--white);padding:1.6rem;display:flex;flex-direction:column;gap:.6rem}
.card p{font-size:.95rem;color:var(--ink-2)}
.card .more{margin-top:auto;font-weight:700;text-decoration:none;font-size:.9rem;padding-top:.6rem}
.card .more::after{content:" →"}
.card .more:hover{color:var(--yellow-dark)}
a.card{text-decoration:none}
a.card:hover h3{color:var(--yellow-dark)}

/* Bandes alternées */
.alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.dark{background:var(--ink);color:#fff}
.dark .eyebrow{color:#b9b6ac}
.dark p{color:#d6d3c9}
.dark .card{background:#221f18}
.dark .card p{color:#b9b6ac}
.dark .grid{background:#3a372e;border-color:#3a372e}

/* Étapes (séquence réelle) */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem}
.steps li{list-style:none;counter-increment:s;border-top:3px solid var(--yellow);padding-top:.9rem}
.steps li::before{content:"0" counter(s);font-family:var(--mono);font-weight:700;color:var(--yellow-dark);display:block;margin-bottom:.35rem}
.steps h3{font-size:1rem}
.steps p{font-size:.9rem;color:var(--ink-2)}
@media (max-width:820px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}

/* Listes */
.checks{list-style:none;display:grid;gap:.55rem}
.checks li{padding-left:1.6rem;position:relative}
.checks li::before{content:"";position:absolute;left:0;top:.5em;width:.7em;height:.7em;background:var(--yellow);border:2px solid var(--ink)}
.tags{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none}
.tags a{font-family:var(--mono);font-size:.8rem;text-decoration:none;border:1px solid var(--line);background:var(--white);padding:.45rem .75rem}
.tags a:hover{border-color:var(--ink);background:var(--yellow)}

/* Tableaux */
table{border-collapse:collapse;width:100%;background:var(--white);font-size:.95rem}
th,td{border:1px solid var(--line);padding:.7rem .9rem;text-align:left;vertical-align:top}
th{font-family:var(--mono);font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;background:var(--bg)}

/* FAQ */
details{background:var(--white);border:1px solid var(--line);margin-bottom:-1px}
summary{cursor:pointer;font-weight:700;padding:1rem 1.2rem;list-style:none;display:flex;justify-content:space-between;gap:1rem}
summary::after{content:"+";font-family:var(--mono);color:var(--yellow-dark);font-weight:700}
details[open] summary::after{content:"–"}
details div{padding:0 1.2rem 1.2rem;color:var(--ink-2)}

/* Formulaires */
form{display:grid;gap:1rem}
.f2{display:grid;gap:1rem;grid-template-columns:1fr 1fr}
@media (max-width:600px){.f2{grid-template-columns:1fr}}
label{font-weight:700;font-size:.9rem;display:grid;gap:.35rem}
label small{font-weight:400;color:var(--ink-2)}
input,select,textarea{font:inherit;padding:.75rem .9rem;border:1px solid var(--ink-2);background:var(--white);width:100%}
input:focus,select:focus,textarea:focus,a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--yellow);outline-offset:1px}
form .btn{border:2px solid var(--ink);cursor:pointer;justify-self:start}
.form-ok{display:none;background:var(--yellow);border:2px solid var(--ink);padding:1rem 1.2rem;font-weight:700}

/* CTA final */
.cta-band{background:var(--yellow);border-top:2px solid var(--ink);border-bottom:2px solid var(--ink)}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;flex-wrap:wrap;padding-top:2.6rem;padding-bottom:2.6rem}
.cta-band .btn{background:var(--ink);color:var(--yellow)}
.cta-band .btn:hover{background:var(--white);color:var(--ink)}
.cta-band p{color:var(--ink)}

/* Fil d'Ariane */
.crumbs{font-family:var(--mono);font-size:.75rem;padding:1rem 0 0;color:var(--ink-2)}
.crumbs a{text-decoration:none}
.crumbs a:hover{color:var(--yellow-dark)}
.page-head{padding:2rem 0 3rem;background:var(--white);border-bottom:1px solid var(--line)}

/* Contenu long */
.prose{display:grid;gap:1.1rem}
.prose h2{margin-top:1.4rem}
.prose ul{padding-left:1.2rem}

/* Footer : plan du site complet */
footer{background:var(--ink);color:#cfccc2;font-size:.9rem}
footer .cols{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;padding:3rem 0}
footer h4{color:#fff;font-family:var(--mono);font-size:.75rem;text-transform:uppercase;letter-spacing:.14em;margin-bottom:.9rem}
footer ul{list-style:none;display:grid;gap:.45rem}
footer a{text-decoration:none}
footer a:hover{color:var(--yellow)}
footer .base{border-top:1px solid #3a372e;padding:1.3rem 0;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-family:var(--mono);font-size:.75rem}
@media (max-width:820px){footer .cols{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){footer .cols{grid-template-columns:1fr}}