/* ══════════════════════════════════════════════════════════
   Kortex Systèmes — feuille de style du carnet de terrain
   Reprend les jetons de la page d'accueil. Autonome :
   ne dépend pas du <style> inline de index.html.
   ══════════════════════════════════════════════════════════ */

@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/inter-400-normal.woff2') format('woff2');}
@font-face{font-family:'Inter';font-style:normal;font-weight:500;font-display:swap;src:url('/assets/fonts/inter-500-normal.woff2') format('woff2');}
@font-face{font-family:'Inter';font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/inter-600-normal.woff2') format('woff2');}
@font-face{font-family:'Inter';font-style:normal;font-weight:700;font-display:swap;src:url('/assets/fonts/inter-700-normal.woff2') format('woff2');}
@font-face{font-family:'Inter';font-style:normal;font-weight:800;font-display:swap;src:url('/assets/fonts/inter-800-normal.woff2') format('woff2');}
@font-face{font-family:'Inter';font-style:normal;font-weight:900;font-display:swap;src:url('/assets/fonts/inter-900-normal.woff2') format('woff2');}
@font-face{font-family:'Playfair Display';font-style:normal;font-weight:500;font-display:swap;src:url('/assets/fonts/playfair-display-500-normal.woff2') format('woff2');}
@font-face{font-family:'Playfair Display';font-style:normal;font-weight:700;font-display:swap;src:url('/assets/fonts/playfair-display-700-normal.woff2') format('woff2');}
@font-face{font-family:'Playfair Display';font-style:italic;font-weight:500;font-display:swap;src:url('/assets/fonts/playfair-display-500-italic.woff2') format('woff2');}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/jetbrains-mono-400-normal.woff2') format('woff2');}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:700;font-display:swap;src:url('/assets/fonts/jetbrains-mono-700-normal.woff2') format('woff2');}

:root{
  --marine:#0C3654; --marine-900:#071F32; --marine-700:#0A2C45;
  --cyan:#6BBFC6; --cyan-soft:rgba(107,191,198,.14);
  --creme:#F5F3EF; --charbon:#393E43; --acier:#7E7E7F;
  --sep:#E8E5E0; --white:#fff;
  --ff-body:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --ff-serif:'Playfair Display',Georgia,serif;
  --ff-mono:'JetBrains Mono','SFMono-Regular',Consolas,monospace;
  --pad:clamp(20px,5vw,64px); --nav-h:72px;
  --ease:cubic-bezier(.16,1,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}}
body{margin:0;background:var(--creme);color:var(--charbon);
  font-family:var(--ff-body);font-size:17px;line-height:1.72;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
body.is-locked{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--ff-serif);font-weight:700;line-height:1.12;
  color:var(--marine);margin:0;letter-spacing:-.015em}

.wrap{width:100%;max-width:1240px;margin-inline:auto;padding-inline:var(--pad)}
.wrap--narrow{max-width:820px}

/* ── révélation ── */
.rv{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none}}

/* ── boutons ── */
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 28px;border-radius:2px;
  font-size:14px;font-weight:600;letter-spacing:.02em;text-decoration:none;
  border:1px solid transparent;cursor:pointer;transition:all .35s var(--ease);white-space:nowrap}
.btn--primary{background:var(--marine);color:var(--creme);border-color:var(--marine)}
.btn--primary:hover{background:var(--marine-900);border-color:var(--marine-900);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--marine);border-color:rgba(12,54,84,.28)}
.btn--ghost:hover{border-color:var(--marine);background:rgba(12,54,84,.05)}
.btn--dark{background:var(--cyan);color:var(--marine-900);border-color:var(--cyan);font-weight:700}
.btn--dark:hover{background:#8ad0d6;border-color:#8ad0d6;transform:translateY(-2px)}

/* ── navigation ── */
.nav{position:fixed;inset:0 0 auto 0;height:var(--nav-h);z-index:120;display:flex;
  align-items:center;justify-content:space-between;padding-inline:var(--pad);
  background:rgba(12,54,84,.97);backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid rgba(245,243,239,.1)}
.nav__brand{display:flex;align-items:center;gap:11px;text-decoration:none}
.nav__mark{width:42px;height:auto;filter:brightness(0) invert(1);opacity:.94}
.nav__brandtext{font-family:var(--ff-serif);font-size:19px;font-weight:700;color:var(--creme);letter-spacing:-.01em}
.nav__brandtext em{font-style:normal;font-weight:500;color:var(--cyan);margin-left:5px}
.nav__links{display:flex;align-items:center;gap:26px}
.nav__links a{position:relative;font-size:13.5px;font-weight:500;color:rgba(245,243,239,.82);
  text-decoration:none;padding:6px 0;transition:color .3s var(--ease)}
.nav__links a::after{content:'';position:absolute;left:0;right:100%;bottom:0;height:1px;
  background:var(--cyan);transition:right .4s var(--ease)}
.nav__links a:hover{color:var(--creme)}
.nav__links a:hover::after,.nav__links a[aria-current=page]::after{right:0}
.nav__links a[aria-current=page]{color:var(--cyan)}
.nav__cta{padding:11px 21px!important;background:var(--cyan);color:var(--marine-900)!important;
  border-radius:2px;font-weight:700!important}
.nav__cta::after{display:none}
.nav__cta:hover{background:#8ad0d6}
.nav__burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav__burger span{width:24px;height:2px;background:var(--creme);transition:transform .35s var(--ease),opacity .25s}
.nav.open .nav__burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.open .nav__burger span:nth-child(2){opacity:0}
.nav.open .nav__burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:1080px){
  .nav__burger{display:flex}
  .nav__links{position:fixed;inset:var(--nav-h) 0 auto 0;flex-direction:column;align-items:flex-start;
    gap:0;padding:0 var(--pad);background:var(--marine-900);
    max-height:0;overflow:hidden;
    transition:max-height .45s var(--ease),padding .45s var(--ease)}
  .nav.open .nav__links{max-height:80vh;overflow:auto;padding:14px var(--pad) 30px}
  .nav__links a{width:100%;padding:14px 0;border-bottom:1px solid rgba(245,243,239,.08);font-size:15px}
  .nav__cta{margin-top:16px}
}

/* ── en-tête d'article ── */
.ahead{padding:calc(var(--nav-h) + 68px) 0 54px;background:var(--marine);color:var(--creme);position:relative;overflow:hidden}
.ahead::after{content:'';position:absolute;inset:auto 0 0 0;height:1px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);opacity:.5}
.ahead h1{color:var(--creme);font-size:clamp(30px,4.6vw,54px);margin:16px 0 0;max-width:20ch}
.ahead h1 em{font-style:italic;color:var(--cyan)}
.crumb{display:flex;flex-wrap:wrap;gap:8px;font-family:var(--ff-mono);font-size:11.5px;
  letter-spacing:.1em;text-transform:uppercase;color:rgba(245,243,239,.5);margin:0 0 6px}
.crumb a{color:var(--cyan);text-decoration:none}
.crumb a:hover{text-decoration:underline}
.ahead__lead{max-width:66ch;margin:22px 0 0;font-size:clamp(17px,1.9vw,20px);
  line-height:1.62;color:rgba(245,243,239,.82)}
.ameta{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:28px;font-family:var(--ff-mono);
  font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:rgba(245,243,239,.52)}
.ameta strong{color:var(--cyan);font-weight:400}
.ahead__cta{margin-top:32px;display:flex;flex-wrap:wrap;gap:12px}

/* ── chiffres clés ── */
.kfig{background:var(--marine-900);color:var(--creme);padding:0}
.kfig__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:0}
.kfig__i{padding:34px var(--pad);border-right:1px solid rgba(245,243,239,.1)}
.kfig__i:last-child{border-right:0}
.kfig__n{font-family:var(--ff-serif);font-size:clamp(30px,3.6vw,42px);font-weight:700;color:var(--cyan);line-height:1}
.kfig__n small{font-size:.46em;font-weight:500;color:rgba(245,243,239,.7);margin-left:5px}
.kfig__l{margin-top:9px;font-size:13.5px;line-height:1.5;color:rgba(245,243,239,.66)}
@media(max-width:760px){.kfig__i{border-right:0;border-bottom:1px solid rgba(245,243,239,.1)}}
@media(max-width:640px){.kfig__grid{grid-template-columns:1fr}
  .kfig__i{padding:26px var(--pad)}
  .kfig__i:last-child{border-bottom:0}}

/* ── corps d'article ── */
.article{padding:66px 0 20px}
.prose{max-width:74ch;margin-inline:auto;font-size:17.5px}
.prose > p:first-of-type{font-size:19px;color:#2C3136}
.prose h2{font-size:clamp(24px,3.1vw,34px);margin:58px 0 18px;position:relative;padding-top:22px}
.prose h2::before{content:'';position:absolute;top:0;left:0;width:44px;height:2px;background:var(--cyan)}
.prose h3{font-size:clamp(19px,2.2vw,23px);margin:40px 0 12px;color:var(--marine-700)}
.prose p{margin:0 0 20px}
.prose strong{color:var(--marine);font-weight:600}
.prose a{color:var(--marine);text-decoration:underline;text-decoration-color:var(--cyan);
  text-underline-offset:3px;text-decoration-thickness:1.5px;transition:background .25s}
.prose a:hover{background:var(--cyan-soft)}
.prose ul,.prose ol{margin:0 0 24px;padding-left:0;list-style:none;display:flex;flex-direction:column;gap:11px}
.prose ul li{position:relative;padding-left:26px}
.prose ul li::before{content:'';position:absolute;left:0;top:13px;width:13px;height:2px;background:var(--cyan)}
.prose ol{counter-reset:o}
.prose ol li{position:relative;padding-left:38px;counter-increment:o}
.prose ol li::before{content:counter(o);position:absolute;left:0;top:1px;width:24px;height:24px;
  display:grid;place-items:center;border:1px solid var(--cyan);border-radius:50%;
  font-family:var(--ff-mono);font-size:11.5px;color:var(--marine)}
.prose blockquote{margin:32px 0;padding:24px 28px;background:var(--white);
  border-left:3px solid var(--cyan);box-shadow:0 1px 3px rgba(12,54,84,.06)}
.prose blockquote p{margin:0;font-family:var(--ff-serif);font-size:19px;font-style:italic;color:var(--marine)}

.note{margin:32px 0;padding:22px 26px;background:rgba(107,191,198,.1);
  border:1px solid rgba(107,191,198,.4);border-radius:2px}
.note p{margin:0;font-size:16px}
.note strong{display:block;font-family:var(--ff-mono);font-size:11.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--marine);margin-bottom:8px}

.tbl{width:100%;border-collapse:collapse;margin:32px 0;font-size:15.5px;background:var(--white)}
.tbl caption{caption-side:bottom;padding-top:12px;font-size:13px;color:var(--acier);text-align:left;font-style:italic}
.tbl th,.tbl td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--sep);vertical-align:top}
.tbl thead th{background:var(--marine);color:var(--creme);font-family:var(--ff-mono);
  font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;font-weight:400;border-bottom:0}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl tbody tr:hover{background:rgba(107,191,198,.07)}
.tblwrap{overflow-x:auto;margin:32px 0}
.tblwrap .tbl{margin:0;min-width:520px}

/* ── FAQ ── */
.faqs{padding:56px 0 10px;background:var(--white);border-block:1px solid var(--sep)}
.faq__item{border-bottom:1px solid var(--sep)}
.faq__item summary{list-style:none;cursor:pointer;padding:22px 40px 22px 0;position:relative;
  font-family:var(--ff-serif);font-size:19px;font-weight:700;color:var(--marine)}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{content:'';position:absolute;right:8px;top:31px;width:11px;height:11px;
  border-right:2px solid var(--cyan);border-bottom:2px solid var(--cyan);
  transform:rotate(45deg);transition:transform .3s var(--ease)}
.faq__item[open] summary::after{transform:rotate(-135deg)}
.faq__body{padding:0 0 22px}
.faq__body p{margin:0 0 14px;color:var(--charbon)}
.faq__body p:last-child{margin-bottom:0}

/* ── suite de lecture ── */
.more{padding:62px 0;background:var(--creme)}
.more__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(272px,1fr));gap:20px;margin-top:30px}
.card{display:flex;flex-direction:column;gap:11px;padding:26px;background:var(--white);
  border:1px solid var(--sep);border-radius:2px;text-decoration:none;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 34px rgba(12,54,84,.1);border-color:var(--cyan)}
.card__tag{font-family:var(--ff-mono);font-size:10.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--cyan)}
.card__t{font-family:var(--ff-serif);font-size:19px;font-weight:700;color:var(--marine);line-height:1.28}
.card__d{font-size:14.5px;color:var(--acier);line-height:1.6;margin:0}
.card__go{margin-top:auto;font-family:var(--ff-mono);font-size:11.5px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--marine)}

/* ── titres de section ── */
.shead{margin-bottom:6px}
.shead__code{display:inline-block;font-family:var(--ff-mono);font-size:11.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--cyan);margin-bottom:12px}
.shead__title{font-size:clamp(25px,3.3vw,38px)}
.shead__lead{max-width:62ch;margin:16px 0 0;color:var(--acier);font-size:16.5px}

/* ── appel final ── */
.cta{padding:76px 0;background:var(--marine);color:var(--creme);text-align:center}
.cta h2{color:var(--creme);font-size:clamp(26px,3.6vw,42px)}
.cta p{max-width:56ch;margin:20px auto 0;color:rgba(245,243,239,.78)}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:32px}
.cta .btn--ghost{color:var(--creme);border-color:rgba(245,243,239,.34)}
.cta .btn--ghost:hover{border-color:var(--creme);background:rgba(245,243,239,.08)}

/* ── pied de page ── */
.footer{background:var(--marine-900);color:rgba(245,243,239,.7);padding:62px 0 26px;font-size:14.5px}
.footer__grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:38px}
.footer__mark{width:64px;filter:brightness(0) invert(1);opacity:.9}
.footer__name{font-family:var(--ff-serif);font-size:20px;color:var(--creme);margin:14px 0 8px;font-weight:700}
.footer__tag{margin:0;line-height:1.62;max-width:34ch}
.footer__col h4{font-family:var(--ff-mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cyan);margin:0 0 16px;font-weight:400}
.footer__col a{display:block;color:rgba(245,243,239,.7);text-decoration:none;padding:5px 0;transition:color .3s}
.footer__col a:hover{color:var(--cyan)}
.footer__col p{margin:10px 0 0;line-height:1.6}
.footer__legal{margin-top:44px;padding-top:22px;border-top:1px solid rgba(245,243,239,.12);
  display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:space-between;font-size:13px;color:rgba(245,243,239,.5)}
.footer__legal p{margin:0}
.footer__legal a{color:rgba(245,243,239,.66);text-decoration:none}
.footer__legal a:hover{color:var(--cyan)}
@media(max-width:900px){.footer__grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.footer__grid{grid-template-columns:1fr}}

/* ── bouton flottant ── */
.floatstack{position:fixed;right:18px;bottom:18px;z-index:110;display:flex;align-items:center;gap:10px}
.floatwa{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;
  background:#25D366;color:#fff;box-shadow:0 6px 20px rgba(0,0,0,.22);transition:transform .3s var(--ease)}
.floatwa:hover{transform:scale(1.07)}
.floatcta{display:inline-flex;align-items:center;padding:13px 22px;border-radius:2px;
  background:var(--marine);color:var(--creme);font-size:13.5px;font-weight:600;
  text-decoration:none;box-shadow:0 6px 20px rgba(12,54,84,.28);transition:transform .3s var(--ease)}
.floatcta:hover{transform:translateY(-2px)}
@media(max-width:520px){.floatcta{display:none}}

/* ── index du carnet ── */
.hub{padding:calc(var(--nav-h) + 74px) 0 58px;background:var(--marine);color:var(--creme)}
.hub h1{color:var(--creme);font-size:clamp(32px,5.4vw,62px);max-width:16ch}
.hub h1 em{font-style:italic;color:var(--cyan)}
.hub__lead{max-width:64ch;margin:24px 0 0;font-size:clamp(17px,1.9vw,20px);line-height:1.62;color:rgba(245,243,239,.82)}
.cocon{padding:60px 0;border-bottom:1px solid var(--sep)}
.cocon:last-of-type{border-bottom:0}