/* =========================================================================
   ESCPrit Durable — feuille de style
   Langage visuel adapté du Design System (Inter, accent menthe, pills,
   héros atmosphérique, cartes 12px). Magazine bas carbone, responsive.
   ========================================================================= */

:root{
  /* Brand & accent */
  --brand-green:#00C39A;
  --brand-green-deep:#009C7B;
  --brand-green-soft:#E6F8F3;
  --tag-blue:#3772CF;

  /* Surfaces */
  --canvas:#FFFFFF;
  --canvas-dark:#0B1220;
  --surface:#F5F7F8;
  --surface-soft:#FAFBFB;
  --hairline:#E6E8EB;
  --hairline-soft:#EFF1F3;

  /* Hero atmosphere */
  --hero-from:#06231E;
  --hero-mid:#0B3B33;
  --hero-to:#0E5C4C;

  /* Text */
  --ink:#0A0E14;
  --charcoal:#1F2937;
  --slate:#4B5563;
  --steel:#6B7280;
  --stone:#9AA3AF;
  --on-dark:#FFFFFF;
  --on-dark-muted:rgba(255,255,255,.72);

  /* Shape & elevation */
  --r-sm:6px; --r-md:8px; --r-lg:12px; --r-xl:16px; --r-xxl:24px; --r-full:9999px;
  --sh-1:rgba(0,0,0,.04) 0 1px 2px 0;
  --sh-2:rgba(0,0,0,.08) 0 4px 12px 0;
  --sh-3:rgba(0,0,0,.12) 0 24px 48px -8px;
  --maxw:1200px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  color:var(--ink);background:var(--canvas);
  font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--steel)}
.center{text-align:center}

/* ---------------------------------------------------------------- Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid transparent;
  border-radius:var(--r-full);font-size:14px;font-weight:500;line-height:1.3;
  padding:11px 20px;transition:transform .15s ease,background .15s ease,color .15s ease;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--charcoal)}
.btn-accent{background:var(--brand-green);color:var(--ink);font-weight:600}
.btn-accent:hover{background:var(--brand-green-deep);color:#fff}
.btn-on-dark{background:#fff;color:var(--ink)}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--hairline)}
.btn-secondary:hover{border-color:var(--ink)}
.btn-secondary.on-dark{color:#fff;border-color:rgba(255,255,255,.35)}
.btn-secondary.on-dark:hover{border-color:#fff}
.btn-lg{padding:14px 26px;font-size:15px}
.btn-block{display:flex;width:100%;justify-content:center}

/* ---------------------------------------------------------------- Header */
.promo{background:var(--canvas-dark);color:var(--on-dark);font-size:13.5px;font-weight:500;
  text-align:center;padding:9px 16px}
.promo a{color:var(--brand-green);font-weight:600}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--hairline-soft)}
.nav{display:flex;align-items:center;gap:28px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.3px}
.brand .logo{width:30px;height:30px;flex:none}
.brand b{color:var(--brand-green-deep)}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:8px}
.nav-links a{font-size:14.5px;font-weight:500;color:var(--slate)}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-cta .login{font-size:14px;font-weight:500;color:var(--slate)}
.nav-cta .login:hover{color:var(--ink)}
.burger{display:none;background:none;border:1px solid var(--hairline);border-radius:var(--r-md);
  width:42px;height:42px;align-items:center;justify-content:center;margin-left:auto}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.burger span::before{top:-6px}.burger span::after{top:6px}
.mobile-menu{display:none;border-bottom:1px solid var(--hairline);background:#fff}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:14px 24px;font-weight:500;color:var(--slate);border-top:1px solid var(--hairline-soft)}
.mobile-menu .btn{margin:16px 24px}

/* ---------------------------------------------------------------- Hero */
.hero{position:relative;overflow:hidden;color:var(--on-dark);
  background:linear-gradient(135deg,var(--hero-from) 0%,var(--hero-mid) 55%,var(--hero-to) 100%)}
.hero::after{content:"";position:absolute;inset:0;opacity:.5;pointer-events:none;
  background:radial-gradient(800px 400px at 80% -10%,rgba(0,195,154,.35),transparent 60%),
             radial-gradient(600px 500px at 0% 110%,rgba(13,92,76,.6),transparent 60%)}
.hero .container{position:relative;z-index:1;padding-top:96px;padding-bottom:96px}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  letter-spacing:.6px;text-transform:uppercase;color:var(--brand-green);
  background:rgba(0,195,154,.12);border:1px solid rgba(0,195,154,.3);
  padding:6px 14px;border-radius:var(--r-full);margin-bottom:22px}
.hero h1{font-size:clamp(34px,6vw,64px);font-weight:600;line-height:1.05;letter-spacing:-1.5px;max-width:14ch}
.hero p.lead{font-size:clamp(16px,2vw,19px);color:var(--on-dark-muted);max-width:52ch;margin-top:22px;line-height:1.55}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* ---------------------------------------------------------------- Sections */
.section{padding:72px 0}
.section.tight{padding:48px 0}
.section.alt{background:var(--surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px}
.section-head h2{font-size:clamp(26px,3.5vw,36px);font-weight:600;letter-spacing:-.5px;line-height:1.2}
.section-head p{color:var(--steel);margin-top:8px;max-width:60ch}
.section-head .link{font-size:14px;font-weight:600;color:var(--brand-green-deep);white-space:nowrap}
.section-head .link:hover{text-decoration:underline}

/* ---------------------------------------------------------------- Cards / grid */
.grid{display:grid;gap:26px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{display:flex;flex-direction:column;background:var(--canvas);border:1px solid var(--hairline);
  border-radius:var(--r-lg);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.card .cover{aspect-ratio:16/10;width:100%;object-fit:cover;background:var(--surface)}
.card .card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.tag{display:inline-flex;align-items:center;gap:6px;align-self:flex-start;font-size:11px;font-weight:600;
  letter-spacing:.4px;text-transform:uppercase;color:#fff;padding:5px 11px;border-radius:var(--r-full)}
.card h3{font-size:19px;font-weight:600;line-height:1.3;letter-spacing:-.3px;margin:14px 0 10px}
.card .excerpt{font-size:14.5px;color:var(--slate);line-height:1.55;flex:1}
.card .meta{display:flex;align-items:center;gap:10px;margin-top:18px;padding-top:16px;border-top:1px solid var(--hairline-soft);
  font-size:13px;color:var(--steel)}
.avatar{width:30px;height:30px;border-radius:var(--r-full);flex:none;display:flex;align-items:center;
  justify-content:center;color:#fff;font-size:12px;font-weight:600}
.meta .who{font-weight:600;color:var(--charcoal)}
.dot{width:3px;height:3px;border-radius:50%;background:var(--stone)}

/* Featured row */
.featured{display:grid;grid-template-columns:1.4fr 1fr;gap:26px;align-items:stretch}
.featured .lead-card{position:relative;border-radius:var(--r-xl);overflow:hidden;min-height:420px;
  display:flex;align-items:flex-end;color:#fff;border:1px solid var(--hairline)}
.featured .lead-card .cover{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.featured .lead-card::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,15,12,0) 30%,rgba(8,15,12,.88) 100%)}
.featured .lead-card .inner{position:relative;z-index:1;padding:30px}
.featured .lead-card h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;line-height:1.2;letter-spacing:-.5px;margin:14px 0 10px}
.featured .lead-card .excerpt{color:rgba(255,255,255,.82);font-size:15px;max-width:50ch}
.featured .lead-card .meta{border-top-color:rgba(255,255,255,.18);color:rgba(255,255,255,.8)}
.featured .lead-card .meta .who{color:#fff}
.featured .side{display:flex;flex-direction:column;gap:20px}
.mini{display:flex;gap:16px;align-items:flex-start}
.mini .cover{width:118px;height:84px;border-radius:var(--r-md);object-fit:cover;flex:none;background:var(--surface)}
.mini h3{font-size:16px;font-weight:600;line-height:1.32;letter-spacing:-.2px;margin-bottom:8px}
.mini .meta{font-size:12.5px;color:var(--steel);display:flex;gap:8px;align-items:center}

/* ---------------------------------------------------------------- Category chips */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{font-size:13.5px;font-weight:500;color:var(--slate);background:var(--canvas);
  border:1px solid var(--hairline);border-radius:var(--r-full);padding:8px 16px}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------------------------------------------------------------- Article page */
.article-wrap{max-width:760px;margin:0 auto;padding:48px 24px 0}
.breadcrumb{font-size:13px;color:var(--steel);margin-bottom:22px}
.breadcrumb a:hover{color:var(--ink)}
.article-head h1{font-size:clamp(28px,4.5vw,44px);font-weight:600;line-height:1.12;letter-spacing:-1px;margin:16px 0}
.article-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:14px;color:var(--steel);margin-bottom:28px}
.article-meta .avatar{width:40px;height:40px;font-size:14px}
.article-meta .who{font-weight:600;color:var(--charcoal)}
.article-cover{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg);margin-bottom:14px;background:var(--surface)}
.article-cover-cap{font-size:12.5px;color:var(--stone);margin-bottom:30px}
.synopsis{font-size:19px;line-height:1.6;color:var(--charcoal);font-weight:400}
.synopsis .label{display:block;font-size:11px;font-weight:600;letter-spacing:.6px;text-transform:uppercase;
  color:var(--brand-green-deep);margin-bottom:10px}

/* Paywall / blurred body */
.locked{position:relative;margin-top:34px}
.locked .blurred{filter:blur(6px);user-select:none;pointer-events:none;-webkit-user-select:none;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,#000 28%,transparent 92%);
  mask-image:linear-gradient(180deg,#000 0%,#000 28%,transparent 92%)}
.locked .blurred p{font-size:17px;line-height:1.7;color:var(--charcoal);margin-bottom:20px}
.paywall{position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:min(560px,100%);
  background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--r-xl);
  box-shadow:var(--sh-3);padding:34px 30px;text-align:center}
.paywall .lock{width:48px;height:48px;border-radius:var(--r-full);background:var(--brand-green-soft);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.paywall h3{font-size:22px;font-weight:600;letter-spacing:-.4px;margin-bottom:10px}
.paywall p{color:var(--steel);font-size:15px;margin-bottom:22px;max-width:42ch;margin-left:auto;margin-right:auto}
.paywall .actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.paywall .perks{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-top:22px;
  font-size:13px;color:var(--slate)}
.paywall .perks span{display:inline-flex;align-items:center;gap:6px}
.tick{color:var(--brand-green-deep);font-weight:700}

/* ---------------------------------------------------------------- Newsletter / CTA band */
.band{background:linear-gradient(135deg,var(--hero-from),var(--hero-to));color:#fff;border-radius:var(--r-xxl);
  padding:56px 48px;text-align:center;position:relative;overflow:hidden}
.band::after{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 50% -20%,rgba(0,195,154,.4),transparent 60%)}
.band > *{position:relative;z-index:1}
.band h2{font-size:clamp(24px,3.4vw,34px);font-weight:600;letter-spacing:-.5px;max-width:20ch;margin:0 auto}
.band p{color:var(--on-dark-muted);margin:14px auto 26px;max-width:50ch}
.subscribe{display:flex;gap:10px;max-width:440px;margin:0 auto;flex-wrap:wrap}
.subscribe input{flex:1;min-width:200px;height:48px;border-radius:var(--r-full);border:1px solid rgba(255,255,255,.3);
  background:rgba(255,255,255,.1);color:#fff;padding:0 20px;font-size:15px}
.subscribe input::placeholder{color:rgba(255,255,255,.6)}
.subscribe input:focus{outline:none;border-color:var(--brand-green)}

/* ---------------------------------------------------------------- Generic content pages */
.page-hero{padding:64px 0 40px}
.page-hero .eyebrow{font-size:12px;font-weight:600;letter-spacing:.6px;text-transform:uppercase;color:var(--brand-green-deep)}
.page-hero h1{font-size:clamp(30px,5vw,48px);font-weight:600;letter-spacing:-1px;line-height:1.1;margin:14px 0;max-width:18ch}
.page-hero p{font-size:18px;color:var(--steel);max-width:62ch;line-height:1.6}
.prose{max-width:740px}
.prose h2{font-size:28px;font-weight:600;letter-spacing:-.5px;margin:38px 0 14px}
.prose h3{font-size:20px;font-weight:600;margin:28px 0 10px}
.prose p{font-size:16.5px;line-height:1.7;color:var(--slate);margin-bottom:18px}
.prose ul{margin:0 0 18px 0;padding-left:0;list-style:none}
.prose li{position:relative;padding-left:28px;margin-bottom:12px;color:var(--slate);line-height:1.6}
.prose li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--brand-green)}
.prose strong{color:var(--ink)}

/* Editors */
.editor-card{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:28px;display:flex;flex-direction:column}
.editor-card .avatar{width:64px;height:64px;font-size:22px;margin-bottom:16px}
.editor-card h3{font-size:20px;font-weight:600;letter-spacing:-.3px}
.editor-card .role{font-size:13.5px;font-weight:500;color:var(--brand-green-deep);margin:4px 0 14px}
.editor-card p{font-size:14.5px;color:var(--slate);line-height:1.6}
.editor-card .expertise{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.editor-card .expertise span{font-size:12px;font-weight:500;color:var(--slate);background:var(--surface);
  border:1px solid var(--hairline);border-radius:var(--r-full);padding:5px 12px}

/* Pricing / membership */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.plan{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:32px;display:flex;flex-direction:column}
.plan.featured-plan{border:2px solid var(--brand-green);box-shadow:rgba(0,195,154,.12) 0 8px 24px}
.plan .badge{align-self:flex-start;background:var(--brand-green);color:var(--ink);font-size:12px;font-weight:700;
  border-radius:var(--r-full);padding:4px 12px;margin-bottom:14px}
.plan h3{font-size:22px;font-weight:600}
.plan .price{font-size:46px;font-weight:600;letter-spacing:-1.5px;margin:14px 0 4px}
.plan .price small{font-size:15px;font-weight:500;color:var(--steel);letter-spacing:0}
.plan .desc{color:var(--steel);font-size:14px;margin-bottom:22px}
.plan ul{list-style:none;margin:0 0 26px;flex:1}
.plan li{display:flex;gap:10px;font-size:14.5px;color:var(--slate);margin-bottom:12px;line-height:1.45}
.plan li .tick{flex:none}

/* FAQ */
.faq-item{background:var(--canvas);border:1px solid var(--hairline-soft);border-radius:var(--r-md);padding:0 22px;margin-bottom:12px}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 0;font-size:17px;font-weight:600;
  display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;color:var(--steel);font-weight:400}
.faq-item[open] summary::after{content:"−"}
.faq-item p{color:var(--steel);font-size:15px;line-height:1.6;padding-bottom:22px}

/* Form */
.form-grid{display:grid;gap:16px;max-width:560px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;border:1px solid var(--hairline);border-radius:var(--r-md);
  padding:12px 14px;font-size:15px;font-family:inherit;background:#fff}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border:2px solid var(--brand-green);padding:11px 13px}
.field textarea{min-height:130px;resize:vertical}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat .num{font-size:clamp(30px,4vw,44px);font-weight:600;letter-spacing:-1px;color:var(--ink)}
.stat .lbl{font-size:13.5px;color:var(--steel);margin-top:6px}

/* Partners / logos */
.logos{display:flex;flex-wrap:wrap;gap:14px 40px;align-items:center;justify-content:center;opacity:.8}
.logos span{font-size:16px;font-weight:600;color:var(--steel);letter-spacing:-.2px}

/* ---------------------------------------------------------------- Footer */
.site-footer{background:var(--canvas);border-top:1px solid var(--hairline);padding:64px 0 32px;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:32px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--steel);max-width:34ch;line-height:1.6}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:var(--steel);padding:5px 0}
.footer-col a:hover{color:var(--ink)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  margin-top:48px;padding-top:24px;border-top:1px solid var(--hairline);font-size:13px;color:var(--steel)}
.cge-strip{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--steel)}
.cge-strip b{color:var(--charcoal)}

/* ---------------------------------------------------------------- Responsive */
@media (max-width:1023px){
  .nav-links,.nav-cta .login{display:none}
  .nav-cta{display:none}
  .burger{display:flex}
  .featured{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1/-1}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  .grid-3,.grid-2{grid-template-columns:1fr}
  .plans{grid-template-columns:1fr}
  .band{padding:40px 22px}
  .section{padding:52px 0}
  .hero .container{padding-top:64px;padding-bottom:64px}
  .section-head{flex-direction:column;align-items:flex-start}
  .mini .cover{width:96px;height:70px}
  .paywall{padding:26px 20px}
}
@media (max-width:479px){
  .footer-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .container{padding:0 18px}
}