/* VaubanLabs — feuille de style unique. Aucune dépendance externe, aucun JS. */

:root{
  --ink:#0b1b2b;
  --ink-2:#12293d;
  --cyan:#abfcfa;
  --accent:#0b6e77;
  --accent-dark:#08535a;
  --paper:#ffffff;
  --paper-2:#f4f8f9;
  --line:#dce6e8;
  --text:#16232c;
  --muted:#526672;
  --radius:10px;
  --wrap:1120px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--text);background:var(--paper);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px}
a:hover{color:var(--accent-dark)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:3px}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;font-weight:700;letter-spacing:-.015em;color:var(--ink)}
h1{font-size:clamp(1.95rem,1.2rem + 2.4vw,3.05rem)}
h2{font-size:clamp(1.5rem,1.1rem + 1.4vw,2.1rem)}
h3{font-size:1.2rem}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.15em}
li{margin-bottom:.4em}
hr{border:0;border-top:1px solid var(--line);margin:2.5rem 0}
strong{font-weight:650}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px;top:0;background:var(--cyan);color:var(--ink);padding:10px 16px;z-index:99}
.skip:focus{left:8px;top:8px}

/* ---------- En-tête ---------- */
.site-head{background:var(--ink);color:#e8f2f4}
.site-head .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:14px 28px;padding-top:16px;padding-bottom:16px}
.brand{display:inline-flex;flex:0 0 auto;text-decoration:none;line-height:0}
.brand img{width:190px}
.site-nav{margin-left:auto}
.site-nav ul{display:flex;flex-wrap:wrap;gap:4px 6px;list-style:none;margin:0;padding:0}
.site-nav a{
  display:block;padding:8px 12px;border-radius:6px;color:#cfe2e6;text-decoration:none;
  font-size:.95rem;font-weight:550;
}
.site-nav a:hover{background:rgba(171,252,250,.12);color:#fff}
.site-nav a[aria-current="page"]{color:var(--ink);background:var(--cyan)}

/* ---------- Bandeaux ---------- */
.band{padding:72px 0}
.band-tight{padding:52px 0}
.band-ink{
  background:var(--ink);color:#d8e6ea;
  background-image:
    linear-gradient(135deg,rgba(171,252,250,.07) 0 1px,transparent 1px 9px),
    linear-gradient(45deg,rgba(171,252,250,.05) 0 1px,transparent 1px 9px);
}
.band-ink h1,.band-ink h2,.band-ink h3{color:#fff}
.band-ink a{color:var(--cyan)}
.band-paper2{background:var(--paper-2)}

.eyebrow{
  display:block;font-size:.76rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);margin:0 0 .75rem;
}
.band-ink .eyebrow{color:var(--cyan)}
.lead{font-size:clamp(1.05rem,1rem + .35vw,1.22rem);color:var(--muted);max-width:62ch}
.band-ink .lead{color:#c3d6dc}
.measure{max-width:70ch}

/* ---------- Héros ---------- */
.hero{padding:88px 0 76px}
.hero h1{max-width:23ch}
.hero .lead{margin-bottom:2rem;max-width:60ch}
.hero-quote{
  margin:2.4rem 0 0;padding:1.1rem 0 1.1rem 1.3rem;border-left:3px solid var(--cyan);
  font-size:1.02rem;color:#cfe0e5;max-width:66ch;
}

/* ---------- Boutons ---------- */
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{
  display:inline-block;padding:13px 24px;border-radius:7px;font-weight:650;font-size:1rem;
  text-decoration:none;border:2px solid transparent;transition:background .12s,color .12s,border-color .12s;
}
.btn-primary,.band-ink a.btn-primary{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}
.btn-primary:hover,.band-ink a.btn-primary:hover{background:#fff;border-color:#fff;color:var(--ink)}
.btn-ghost,.band-ink a.btn-ghost{border-color:rgba(216,230,234,.45);color:#e6f2f4}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-solid,.band-ink a.btn-solid{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-solid:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff}
.btn-line{border-color:var(--line);color:var(--ink);background:#fff}
.btn-line:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- Grilles & cartes ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(380px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;display:flex;flex-direction:column;
}
.card h3{margin-bottom:.35em}
.card p{color:var(--muted);font-size:.97rem}
.card ul{color:var(--muted);font-size:.95rem}
.card .card-link{margin-top:auto;padding-top:.6rem;font-weight:650;font-size:.95rem}
.card-num{
  font-size:.78rem;font-weight:700;letter-spacing:.14em;color:var(--accent);
  display:block;margin-bottom:.5rem;
}
.chip{
  display:inline-block;white-space:nowrap;font-size:.76rem;font-weight:650;letter-spacing:.05em;
  background:var(--paper-2);border:1px solid var(--line);color:var(--muted);
  padding:4px 10px;border-radius:100px;margin:0 6px 8px 0;
}
.chip-strong{background:rgba(11,110,119,.09);border-color:rgba(11,110,119,.25);color:var(--accent-dark)}

.steps{list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{
  counter-increment:s;position:relative;padding-left:52px;margin-bottom:1.5rem;
}
.steps li::before{
  content:counter(s,decimal-leading-zero);position:absolute;left:0;top:-2px;
  font-size:.85rem;font-weight:700;letter-spacing:.05em;color:var(--accent);
  border:1px solid var(--line);border-radius:6px;width:36px;height:36px;
  display:flex;align-items:center;justify-content:center;background:#fff;
}
.band-ink .steps li::before{color:var(--cyan);background:transparent;border-color:rgba(171,252,250,.35)}
.steps li strong{display:block;color:var(--ink);margin-bottom:.15em}
.band-ink .steps li strong{color:#fff}
.steps li span{color:var(--muted);font-size:.97rem}
.band-ink .steps li span{color:#c3d6dc}

.facts{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));list-style:none;margin:0;padding:0}
.facts li{border-top:2px solid var(--cyan);padding-top:14px}
.facts b{display:block;font-size:1.5rem;color:#fff;line-height:1.2}
.facts span{font-size:.92rem;color:#b8ccd3}

.deliverables{list-style:none;margin:0;padding:0}
.deliverables li{position:relative;padding-left:26px;margin-bottom:.55em}
.deliverables li::before{
  content:"";position:absolute;left:2px;top:.62em;width:9px;height:9px;
  border-radius:2px;background:var(--accent);
}
.band-ink .deliverables li::before{background:var(--cyan)}

.split{display:grid;gap:44px;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:start}
@media (max-width:820px){.split{grid-template-columns:1fr;gap:32px}}

.aside-box{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.aside-box h3{font-size:1.02rem}
.aside-box p,.aside-box li{font-size:.95rem;color:var(--muted)}
.aside-box :last-child{margin-bottom:0}

.contact-list{list-style:none;margin:0;padding:0;font-size:1.05rem}
.contact-list li{margin-bottom:.9em}
.contact-list .label{
  display:block;font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:700;margin-bottom:.1em;
}
.band-ink .contact-list .label{color:#9db6bf}

.todo{
  background:#fff5d6;border:1px dashed #c8a92b;color:#5c4a06;
  padding:2px 8px;border-radius:4px;font-size:.9em;font-weight:600;
}

/* ---------- Fil d'Ariane ---------- */
.crumbs{font-size:.87rem;color:var(--muted);padding:18px 0 0}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.4em;margin:0;padding:0}
.crumbs li::after{content:"›";margin-left:.45em;color:#a9bcc3}
.crumbs li:last-child::after{content:""}
.crumbs a{color:var(--muted)}

/* ---------- Pied de page ---------- */
.site-foot{background:var(--ink);color:#b9ccd3;padding:56px 0 28px;font-size:.94rem}
.site-foot h2{font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);margin-bottom:1rem}
.site-foot a{color:#dcecef}
.site-foot ul{list-style:none;margin:0;padding:0}
.site-foot li{margin-bottom:.5em}
.site-foot .brand img{width:210px;margin-bottom:14px}
.foot-grid{display:grid;gap:34px;grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.foot-legal{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(216,230,234,.16);
  display:flex;flex-wrap:wrap;gap:8px 22px;font-size:.87rem;color:#8ba4ad;
}

/* ---------- Contenu long (mentions légales) ---------- */
.prose h2{margin-top:2.2em;font-size:1.35rem}
.prose h3{margin-top:1.6em;font-size:1.05rem}
.prose{max-width:72ch}

@media (max-width:600px){
  body{font-size:16px}
  .band{padding:56px 0}
  .hero{padding:60px 0 52px}
  .brand img{width:158px}
  .site-nav{margin-left:0;width:100%}
  .site-nav a{padding:6px 9px;font-size:.85rem}
  .site-nav ul{gap:2px 2px}
}

@media print{
  .site-head,.site-foot,.btns{display:none}
  body{font-size:12pt;color:#000}
}

/* ---------- Ajustements sur fond sombre ---------- */
.band-ink .chip{background:rgba(171,252,250,.10);border-color:rgba(171,252,250,.30);color:#d5f5f6}
.band-ink .chip-strong{background:rgba(171,252,250,.18);border-color:rgba(171,252,250,.45);color:#eafeff}
.band-ink .crumbs{color:#8ba7b1}
.band-ink .crumbs a{color:#a8c4cc}
.band-ink .crumbs a:hover{color:var(--cyan)}
.band-ink .crumbs li::after{color:#5d7883}
.crumbs{padding:18px 0 8px}

/* Colonne latérale qui suit la lecture sur grand écran */
@media (min-width:900px){
  .split > .aside-box{position:sticky;top:24px}
}