/* ATLAS — page d'installation. Palette unifiée : nuit, or, crème. */
:root{
  --nuit:#06070A; --nuit-2:#0A0C12; --nuit-3:#0F1219;
  --or:#C4A35A; --or-clair:#D9BE7E; --creme:#F2ECDF; --creme-2:#C9C3B6;
}
*{box-sizing:border-box}
body{
  margin:0; background:var(--nuit); color:var(--creme);
  font-family:"Inter","Helvetica Neue",Arial,sans-serif; line-height:1.65;
  background-image:radial-gradient(circle at 20% 0%, rgba(196,163,90,.07), transparent 55%);
}
.entete{padding:28px 24px 0;max-width:820px;margin:0 auto}
.logo{height:56px;width:auto;display:block}
main{max-width:820px;margin:0 auto;padding:24px 24px 64px}
h1{font-family:"Playfair Display",Georgia,serif;font-size:2.1rem;font-weight:600;
   margin:.6em 0 .3em;letter-spacing:.01em}
h2{font-family:"Playfair Display",Georgia,serif;font-size:1.2rem;color:var(--or);margin:0 0 .6em}
h3{font-size:.95rem;text-transform:uppercase;letter-spacing:.09em;color:var(--creme-2);
   margin:1.4em 0 .4em;font-weight:600}
.chapeau{font-size:1.06rem;color:var(--creme-2)}
.encart{background:var(--nuit-3);border-left:2px solid var(--or);padding:18px 22px;margin:26px 0}
.encart h2{margin-top:0}
.bloc{background:var(--nuit-2);border:1px solid rgba(196,163,90,.16);border-radius:10px;
      padding:20px 24px;margin:20px 0}
ol,ul{padding-left:1.3em}
li{margin:.35em 0}
a{color:var(--or-clair);text-decoration:none;border-bottom:1px solid rgba(196,163,90,.35)}
a:hover{color:var(--or);border-bottom-color:var(--or)}
code{background:var(--nuit-3);border:1px solid rgba(196,163,90,.18);border-radius:4px;
     padding:.1em .4em;font-family:"JetBrains Mono",Consolas,monospace;font-size:.88em}
pre{background:var(--nuit-3);border:1px solid rgba(196,163,90,.18);border-radius:6px;
    padding:14px;overflow-x:auto;font-family:"JetBrains Mono",Consolas,monospace;
    font-size:.78rem;color:var(--creme-2);line-height:1.55}
.petit{font-size:.9rem;color:var(--creme-2)}
footer{max-width:820px;margin:0 auto;padding:24px;border-top:1px solid rgba(196,163,90,.16);
       font-size:.85rem;color:var(--creme-2)}
@media(max-width:600px){h1{font-size:1.6rem}main{padding:16px 18px 48px}}